mirror of
https://github.com/WerWolv/ImHex.git
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build: More repo cleanup, move libimhex and external libs to /lib folder
This commit is contained in:
WerWolv
3178
lib/external/imgui/source/TextEditor.cpp
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lib/external/imgui/source/TextEditor.cpp
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lib/external/imgui/source/cimgui.cpp
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lib/external/imgui/source/cimgui.cpp
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lib/external/imgui/source/imgui.cpp
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lib/external/imgui/source/imgui.cpp
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lib/external/imgui/source/imgui_demo.cpp
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lib/external/imgui/source/imgui_demo.cpp
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lib/external/imgui/source/imgui_draw.cpp
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lib/external/imgui/source/imgui_draw.cpp
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771
lib/external/imgui/source/imgui_freetype.cpp
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lib/external/imgui/source/imgui_freetype.cpp
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@@ -0,0 +1,771 @@
|
||||
// dear imgui: FreeType font builder (used as a replacement for the stb_truetype builder)
|
||||
// (code)
|
||||
|
||||
// Get the latest version at https://github.com/ocornut/imgui/tree/master/misc/freetype
|
||||
// Original code by @vuhdo (Aleksei Skriabin). Improvements by @mikesart. Maintained since 2019 by @ocornut.
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||||
|
||||
// CHANGELOG
|
||||
// (minor and older changes stripped away, please see git history for details)
|
||||
// 2021/03/05: added ImGuiFreeTypeBuilderFlags_Bitmap to load bitmap glyphs.
|
||||
// 2021/03/02: set 'atlas->TexPixelsUseColors = true' to help some backends with deciding of a prefered texture format.
|
||||
// 2021/01/28: added support for color-layered glyphs via ImGuiFreeTypeBuilderFlags_LoadColor (require Freetype 2.10+).
|
||||
// 2021/01/26: simplified integration by using '#define IMGUI_ENABLE_FREETYPE'.
|
||||
// renamed ImGuiFreeType::XXX flags to ImGuiFreeTypeBuilderFlags_XXX for consistency with other API. removed ImGuiFreeType::BuildFontAtlas().
|
||||
// 2020/06/04: fix for rare case where FT_Get_Char_Index() succeed but FT_Load_Glyph() fails.
|
||||
// 2019/02/09: added RasterizerFlags::Monochrome flag to disable font anti-aliasing (combine with ::MonoHinting for best results!)
|
||||
// 2019/01/15: added support for imgui allocators + added FreeType only override function SetAllocatorFunctions().
|
||||
// 2019/01/10: re-factored to match big update in STB builder. fixed texture height waste. fixed redundant glyphs when merging. support for glyph padding.
|
||||
// 2018/06/08: added support for ImFontConfig::GlyphMinAdvanceX, GlyphMaxAdvanceX.
|
||||
// 2018/02/04: moved to main imgui repository (away from http://www.github.com/ocornut/imgui_club)
|
||||
// 2018/01/22: fix for addition of ImFontAtlas::TexUvscale member.
|
||||
// 2017/10/22: minor inconsequential change to match change in master (removed an unnecessary statement).
|
||||
// 2017/09/26: fixes for imgui internal changes.
|
||||
// 2017/08/26: cleanup, optimizations, support for ImFontConfig::RasterizerFlags, ImFontConfig::RasterizerMultiply.
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||||
// 2017/08/16: imported from https://github.com/Vuhdo/imgui_freetype into http://www.github.com/ocornut/imgui_club, updated for latest changes in ImFontAtlas, minor tweaks.
|
||||
|
||||
// About Gamma Correct Blending:
|
||||
// - FreeType assumes blending in linear space rather than gamma space.
|
||||
// - See https://www.freetype.org/freetype2/docs/reference/ft2-base_interface.html#FT_Render_Glyph
|
||||
// - For correct results you need to be using sRGB and convert to linear space in the pixel shader output.
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||||
// - The default dear imgui styles will be impacted by this change (alpha values will need tweaking).
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||||
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||||
// FIXME: cfg.OversampleH, OversampleV are not supported (but perhaps not so necessary with this rasterizer).
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||||
|
||||
#include "imgui_freetype.h"
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#include "imgui_internal.h" // ImMin,ImMax,ImFontAtlasBuild*,
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||||
#include <stdint.h>
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||||
#include <ft2build.h>
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||||
#include FT_FREETYPE_H // <freetype/freetype.h>
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#include FT_MODULE_H // <freetype/ftmodapi.h>
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||||
#include FT_GLYPH_H // <freetype/ftglyph.h>
|
||||
#include FT_SYNTHESIS_H // <freetype/ftsynth.h>
|
||||
|
||||
#ifdef _MSC_VER
|
||||
#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
|
||||
#pragma warning (disable: 26812) // [Static Analyzer] The enum type 'xxx' is unscoped. Prefer 'enum class' over 'enum' (Enum.3).
|
||||
#endif
|
||||
|
||||
#if defined(__GNUC__)
|
||||
#pragma GCC diagnostic ignored "-Wpragmas" // warning: unknown option after '#pragma GCC diagnostic' kind
|
||||
#pragma GCC diagnostic ignored "-Wunused-function" // warning: 'xxxx' defined but not used
|
||||
#endif
|
||||
|
||||
//-------------------------------------------------------------------------
|
||||
// Data
|
||||
//-------------------------------------------------------------------------
|
||||
|
||||
// Default memory allocators
|
||||
static void* ImGuiFreeTypeDefaultAllocFunc(size_t size, void* user_data) { IM_UNUSED(user_data); return IM_ALLOC(size); }
|
||||
static void ImGuiFreeTypeDefaultFreeFunc(void* ptr, void* user_data) { IM_UNUSED(user_data); IM_FREE(ptr); }
|
||||
|
||||
// Current memory allocators
|
||||
static void* (*GImGuiFreeTypeAllocFunc)(size_t size, void* user_data) = ImGuiFreeTypeDefaultAllocFunc;
|
||||
static void (*GImGuiFreeTypeFreeFunc)(void* ptr, void* user_data) = ImGuiFreeTypeDefaultFreeFunc;
|
||||
static void* GImGuiFreeTypeAllocatorUserData = NULL;
|
||||
|
||||
//-------------------------------------------------------------------------
|
||||
// Code
|
||||
//-------------------------------------------------------------------------
|
||||
|
||||
namespace
|
||||
{
|
||||
// Glyph metrics:
|
||||
// --------------
|
||||
//
|
||||
// xmin xmax
|
||||
// | |
|
||||
// |<-------- width -------->|
|
||||
// | |
|
||||
// | +-------------------------+----------------- ymax
|
||||
// | | ggggggggg ggggg | ^ ^
|
||||
// | | g:::::::::ggg::::g | | |
|
||||
// | | g:::::::::::::::::g | | |
|
||||
// | | g::::::ggggg::::::gg | | |
|
||||
// | | g:::::g g:::::g | | |
|
||||
// offsetX -|-------->| g:::::g g:::::g | offsetY |
|
||||
// | | g:::::g g:::::g | | |
|
||||
// | | g::::::g g:::::g | | |
|
||||
// | | g:::::::ggggg:::::g | | |
|
||||
// | | g::::::::::::::::g | | height
|
||||
// | | gg::::::::::::::g | | |
|
||||
// baseline ---*---------|---- gggggggg::::::g-----*-------- |
|
||||
// / | | g:::::g | |
|
||||
// origin | | gggggg g:::::g | |
|
||||
// | | g:::::gg gg:::::g | |
|
||||
// | | g::::::ggg:::::::g | |
|
||||
// | | gg:::::::::::::g | |
|
||||
// | | ggg::::::ggg | |
|
||||
// | | gggggg | v
|
||||
// | +-------------------------+----------------- ymin
|
||||
// | |
|
||||
// |------------- advanceX ----------->|
|
||||
|
||||
// A structure that describe a glyph.
|
||||
struct GlyphInfo
|
||||
{
|
||||
int Width; // Glyph's width in pixels.
|
||||
int Height; // Glyph's height in pixels.
|
||||
FT_Int OffsetX; // The distance from the origin ("pen position") to the left of the glyph.
|
||||
FT_Int OffsetY; // The distance from the origin to the top of the glyph. This is usually a value < 0.
|
||||
float AdvanceX; // The distance from the origin to the origin of the next glyph. This is usually a value > 0.
|
||||
bool IsColored; // The glyph is colored
|
||||
};
|
||||
|
||||
// Font parameters and metrics.
|
||||
struct FontInfo
|
||||
{
|
||||
uint32_t PixelHeight; // Size this font was generated with.
|
||||
float Ascender; // The pixel extents above the baseline in pixels (typically positive).
|
||||
float Descender; // The extents below the baseline in pixels (typically negative).
|
||||
float LineSpacing; // The baseline-to-baseline distance. Note that it usually is larger than the sum of the ascender and descender taken as absolute values. There is also no guarantee that no glyphs extend above or below subsequent baselines when using this distance. Think of it as a value the designer of the font finds appropriate.
|
||||
float LineGap; // The spacing in pixels between one row's descent and the next row's ascent.
|
||||
float MaxAdvanceWidth; // This field gives the maximum horizontal cursor advance for all glyphs in the font.
|
||||
};
|
||||
|
||||
// FreeType glyph rasterizer.
|
||||
// NB: No ctor/dtor, explicitly call Init()/Shutdown()
|
||||
struct FreeTypeFont
|
||||
{
|
||||
bool InitFont(FT_Library ft_library, const ImFontConfig& cfg, unsigned int extra_user_flags); // Initialize from an external data buffer. Doesn't copy data, and you must ensure it stays valid up to this object lifetime.
|
||||
void CloseFont();
|
||||
void SetPixelHeight(int pixel_height); // Change font pixel size. All following calls to RasterizeGlyph() will use this size
|
||||
const FT_Glyph_Metrics* LoadGlyph(uint32_t in_codepoint);
|
||||
const FT_Bitmap* RenderGlyphAndGetInfo(GlyphInfo* out_glyph_info);
|
||||
void BlitGlyph(const FT_Bitmap* ft_bitmap, uint32_t* dst, uint32_t dst_pitch, unsigned char* multiply_table = NULL);
|
||||
~FreeTypeFont() { CloseFont(); }
|
||||
|
||||
// [Internals]
|
||||
FontInfo Info; // Font descriptor of the current font.
|
||||
FT_Face Face;
|
||||
unsigned int UserFlags; // = ImFontConfig::RasterizerFlags
|
||||
FT_Int32 LoadFlags;
|
||||
FT_Render_Mode RenderMode;
|
||||
};
|
||||
|
||||
// From SDL_ttf: Handy routines for converting from fixed point
|
||||
#define FT_CEIL(X) (((X + 63) & -64) / 64)
|
||||
|
||||
bool FreeTypeFont::InitFont(FT_Library ft_library, const ImFontConfig& cfg, unsigned int extra_font_builder_flags)
|
||||
{
|
||||
FT_Error error = FT_New_Memory_Face(ft_library, (uint8_t*)cfg.FontData, (uint32_t)cfg.FontDataSize, (uint32_t)cfg.FontNo, &Face);
|
||||
if (error != 0)
|
||||
return false;
|
||||
error = FT_Select_Charmap(Face, FT_ENCODING_UNICODE);
|
||||
if (error != 0)
|
||||
return false;
|
||||
|
||||
// Convert to FreeType flags (NB: Bold and Oblique are processed separately)
|
||||
UserFlags = cfg.FontBuilderFlags | extra_font_builder_flags;
|
||||
|
||||
LoadFlags = 0;
|
||||
if ((UserFlags & ImGuiFreeTypeBuilderFlags_Bitmap) == 0)
|
||||
LoadFlags |= FT_LOAD_NO_BITMAP;
|
||||
|
||||
if (UserFlags & ImGuiFreeTypeBuilderFlags_NoHinting)
|
||||
LoadFlags |= FT_LOAD_NO_HINTING;
|
||||
if (UserFlags & ImGuiFreeTypeBuilderFlags_NoAutoHint)
|
||||
LoadFlags |= FT_LOAD_NO_AUTOHINT;
|
||||
if (UserFlags & ImGuiFreeTypeBuilderFlags_ForceAutoHint)
|
||||
LoadFlags |= FT_LOAD_FORCE_AUTOHINT;
|
||||
if (UserFlags & ImGuiFreeTypeBuilderFlags_LightHinting)
|
||||
LoadFlags |= FT_LOAD_TARGET_LIGHT;
|
||||
else if (UserFlags & ImGuiFreeTypeBuilderFlags_MonoHinting)
|
||||
LoadFlags |= FT_LOAD_TARGET_MONO;
|
||||
else
|
||||
LoadFlags |= FT_LOAD_TARGET_NORMAL;
|
||||
|
||||
if (UserFlags & ImGuiFreeTypeBuilderFlags_Monochrome)
|
||||
RenderMode = FT_RENDER_MODE_MONO;
|
||||
else
|
||||
RenderMode = FT_RENDER_MODE_NORMAL;
|
||||
|
||||
if (UserFlags & ImGuiFreeTypeBuilderFlags_LoadColor)
|
||||
LoadFlags |= FT_LOAD_COLOR;
|
||||
|
||||
memset(&Info, 0, sizeof(Info));
|
||||
SetPixelHeight((uint32_t)cfg.SizePixels);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void FreeTypeFont::CloseFont()
|
||||
{
|
||||
if (Face)
|
||||
{
|
||||
FT_Done_Face(Face);
|
||||
Face = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
void FreeTypeFont::SetPixelHeight(int pixel_height)
|
||||
{
|
||||
// Vuhdo: I'm not sure how to deal with font sizes properly. As far as I understand, currently ImGui assumes that the 'pixel_height'
|
||||
// is a maximum height of an any given glyph, i.e. it's the sum of font's ascender and descender. Seems strange to me.
|
||||
// NB: FT_Set_Pixel_Sizes() doesn't seem to get us the same result.
|
||||
FT_Size_RequestRec req;
|
||||
req.type = (UserFlags & ImGuiFreeTypeBuilderFlags_Bitmap) ? FT_SIZE_REQUEST_TYPE_NOMINAL : FT_SIZE_REQUEST_TYPE_REAL_DIM;
|
||||
req.width = 0;
|
||||
req.height = (uint32_t)pixel_height * 64;
|
||||
req.horiResolution = 0;
|
||||
req.vertResolution = 0;
|
||||
FT_Request_Size(Face, &req);
|
||||
|
||||
// Update font info
|
||||
FT_Size_Metrics metrics = Face->size->metrics;
|
||||
Info.PixelHeight = (uint32_t)pixel_height;
|
||||
Info.Ascender = (float)FT_CEIL(metrics.ascender);
|
||||
Info.Descender = (float)FT_CEIL(metrics.descender);
|
||||
Info.LineSpacing = (float)FT_CEIL(metrics.height);
|
||||
Info.LineGap = (float)FT_CEIL(metrics.height - metrics.ascender + metrics.descender);
|
||||
Info.MaxAdvanceWidth = (float)FT_CEIL(metrics.max_advance);
|
||||
}
|
||||
|
||||
const FT_Glyph_Metrics* FreeTypeFont::LoadGlyph(uint32_t codepoint)
|
||||
{
|
||||
uint32_t glyph_index = FT_Get_Char_Index(Face, codepoint);
|
||||
if (glyph_index == 0)
|
||||
return NULL;
|
||||
FT_Error error = FT_Load_Glyph(Face, glyph_index, LoadFlags);
|
||||
if (error)
|
||||
return NULL;
|
||||
|
||||
// Need an outline for this to work
|
||||
FT_GlyphSlot slot = Face->glyph;
|
||||
IM_ASSERT(slot->format == FT_GLYPH_FORMAT_OUTLINE || slot->format == FT_GLYPH_FORMAT_BITMAP);
|
||||
|
||||
// Apply convenience transform (this is not picking from real "Bold"/"Italic" fonts! Merely applying FreeType helper transform. Oblique == Slanting)
|
||||
if (UserFlags & ImGuiFreeTypeBuilderFlags_Bold)
|
||||
FT_GlyphSlot_Embolden(slot);
|
||||
if (UserFlags & ImGuiFreeTypeBuilderFlags_Oblique)
|
||||
{
|
||||
FT_GlyphSlot_Oblique(slot);
|
||||
//FT_BBox bbox;
|
||||
//FT_Outline_Get_BBox(&slot->outline, &bbox);
|
||||
//slot->metrics.width = bbox.xMax - bbox.xMin;
|
||||
//slot->metrics.height = bbox.yMax - bbox.yMin;
|
||||
}
|
||||
|
||||
return &slot->metrics;
|
||||
}
|
||||
|
||||
const FT_Bitmap* FreeTypeFont::RenderGlyphAndGetInfo(GlyphInfo* out_glyph_info)
|
||||
{
|
||||
FT_GlyphSlot slot = Face->glyph;
|
||||
FT_Error error = FT_Render_Glyph(slot, RenderMode);
|
||||
if (error != 0)
|
||||
return NULL;
|
||||
|
||||
FT_Bitmap* ft_bitmap = &Face->glyph->bitmap;
|
||||
out_glyph_info->Width = (int)ft_bitmap->width;
|
||||
out_glyph_info->Height = (int)ft_bitmap->rows;
|
||||
out_glyph_info->OffsetX = Face->glyph->bitmap_left;
|
||||
out_glyph_info->OffsetY = -Face->glyph->bitmap_top;
|
||||
out_glyph_info->AdvanceX = (float)FT_CEIL(slot->advance.x);
|
||||
out_glyph_info->IsColored = (ft_bitmap->pixel_mode == FT_PIXEL_MODE_BGRA);
|
||||
|
||||
return ft_bitmap;
|
||||
}
|
||||
|
||||
void FreeTypeFont::BlitGlyph(const FT_Bitmap* ft_bitmap, uint32_t* dst, uint32_t dst_pitch, unsigned char* multiply_table)
|
||||
{
|
||||
IM_ASSERT(ft_bitmap != NULL);
|
||||
const uint32_t w = ft_bitmap->width;
|
||||
const uint32_t h = ft_bitmap->rows;
|
||||
const uint8_t* src = ft_bitmap->buffer;
|
||||
const uint32_t src_pitch = ft_bitmap->pitch;
|
||||
|
||||
switch (ft_bitmap->pixel_mode)
|
||||
{
|
||||
case FT_PIXEL_MODE_GRAY: // Grayscale image, 1 byte per pixel.
|
||||
{
|
||||
if (multiply_table == NULL)
|
||||
{
|
||||
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
|
||||
for (uint32_t x = 0; x < w; x++)
|
||||
dst[x] = IM_COL32(255, 255, 255, src[x]);
|
||||
}
|
||||
else
|
||||
{
|
||||
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
|
||||
for (uint32_t x = 0; x < w; x++)
|
||||
dst[x] = IM_COL32(255, 255, 255, multiply_table[src[x]]);
|
||||
}
|
||||
break;
|
||||
}
|
||||
case FT_PIXEL_MODE_MONO: // Monochrome image, 1 bit per pixel. The bits in each byte are ordered from MSB to LSB.
|
||||
{
|
||||
uint8_t color0 = multiply_table ? multiply_table[0] : 0;
|
||||
uint8_t color1 = multiply_table ? multiply_table[255] : 255;
|
||||
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
|
||||
{
|
||||
uint8_t bits = 0;
|
||||
const uint8_t* bits_ptr = src;
|
||||
for (uint32_t x = 0; x < w; x++, bits <<= 1)
|
||||
{
|
||||
if ((x & 7) == 0)
|
||||
bits = *bits_ptr++;
|
||||
dst[x] = IM_COL32(255, 255, 255, (bits & 0x80) ? color1 : color0);
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
case FT_PIXEL_MODE_BGRA:
|
||||
{
|
||||
// FIXME: Converting pre-multiplied alpha to straight. Doesn't smell good.
|
||||
#define DE_MULTIPLY(color, alpha) (ImU32)(255.0f * (float)color / (float)alpha + 0.5f)
|
||||
if (multiply_table == NULL)
|
||||
{
|
||||
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
|
||||
for (uint32_t x = 0; x < w; x++)
|
||||
{
|
||||
uint8_t r = src[x * 4 + 2], g = src[x * 4 + 1], b = src[x * 4], a = src[x * 4 + 3];
|
||||
dst[x] = IM_COL32(DE_MULTIPLY(r, a), DE_MULTIPLY(g, a), DE_MULTIPLY(b, a), a);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
|
||||
{
|
||||
for (uint32_t x = 0; x < w; x++)
|
||||
{
|
||||
uint8_t r = src[x * 4 + 2], g = src[x * 4 + 1], b = src[x * 4], a = src[x * 4 + 3];
|
||||
dst[x] = IM_COL32(multiply_table[DE_MULTIPLY(r, a)], multiply_table[DE_MULTIPLY(g, a)], multiply_table[DE_MULTIPLY(b, a)], multiply_table[a]);
|
||||
}
|
||||
}
|
||||
}
|
||||
#undef DE_MULTIPLY
|
||||
break;
|
||||
}
|
||||
default:
|
||||
IM_ASSERT(0 && "FreeTypeFont::BlitGlyph(): Unknown bitmap pixel mode!");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#ifndef STB_RECT_PACK_IMPLEMENTATION // in case the user already have an implementation in the _same_ compilation unit (e.g. unity builds)
|
||||
#ifndef IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
|
||||
#define STBRP_ASSERT(x) do { IM_ASSERT(x); } while (0)
|
||||
#define STBRP_STATIC
|
||||
#define STB_RECT_PACK_IMPLEMENTATION
|
||||
#endif
|
||||
#ifdef IMGUI_STB_RECT_PACK_FILENAME
|
||||
#include IMGUI_STB_RECT_PACK_FILENAME
|
||||
#else
|
||||
#include "imstb_rectpack.h"
|
||||
#endif
|
||||
#endif
|
||||
|
||||
struct ImFontBuildSrcGlyphFT
|
||||
{
|
||||
GlyphInfo Info;
|
||||
uint32_t Codepoint;
|
||||
unsigned int* BitmapData; // Point within one of the dst_tmp_bitmap_buffers[] array
|
||||
|
||||
ImFontBuildSrcGlyphFT() { memset(this, 0, sizeof(*this)); }
|
||||
};
|
||||
|
||||
struct ImFontBuildSrcDataFT
|
||||
{
|
||||
FreeTypeFont Font;
|
||||
stbrp_rect* Rects; // Rectangle to pack. We first fill in their size and the packer will give us their position.
|
||||
const ImWchar* SrcRanges; // Ranges as requested by user (user is allowed to request too much, e.g. 0x0020..0xFFFF)
|
||||
int DstIndex; // Index into atlas->Fonts[] and dst_tmp_array[]
|
||||
int GlyphsHighest; // Highest requested codepoint
|
||||
int GlyphsCount; // Glyph count (excluding missing glyphs and glyphs already set by an earlier source font)
|
||||
ImBitVector GlyphsSet; // Glyph bit map (random access, 1-bit per codepoint. This will be a maximum of 8KB)
|
||||
ImVector<ImFontBuildSrcGlyphFT> GlyphsList;
|
||||
};
|
||||
|
||||
// Temporary data for one destination ImFont* (multiple source fonts can be merged into one destination ImFont)
|
||||
struct ImFontBuildDstDataFT
|
||||
{
|
||||
int SrcCount; // Number of source fonts targeting this destination font.
|
||||
int GlyphsHighest;
|
||||
int GlyphsCount;
|
||||
ImBitVector GlyphsSet; // This is used to resolve collision when multiple sources are merged into a same destination font.
|
||||
};
|
||||
|
||||
bool ImFontAtlasBuildWithFreeTypeEx(FT_Library ft_library, ImFontAtlas* atlas, unsigned int extra_flags)
|
||||
{
|
||||
IM_ASSERT(atlas->ConfigData.Size > 0);
|
||||
|
||||
ImFontAtlasBuildInit(atlas);
|
||||
|
||||
// Clear atlas
|
||||
atlas->TexID = (ImTextureID)NULL;
|
||||
atlas->TexWidth = atlas->TexHeight = 0;
|
||||
atlas->TexUvScale = ImVec2(0.0f, 0.0f);
|
||||
atlas->TexUvWhitePixel = ImVec2(0.0f, 0.0f);
|
||||
atlas->ClearTexData();
|
||||
|
||||
// Temporary storage for building
|
||||
bool src_load_color = false;
|
||||
ImVector<ImFontBuildSrcDataFT> src_tmp_array;
|
||||
ImVector<ImFontBuildDstDataFT> dst_tmp_array;
|
||||
src_tmp_array.resize(atlas->ConfigData.Size);
|
||||
dst_tmp_array.resize(atlas->Fonts.Size);
|
||||
memset((void*)src_tmp_array.Data, 0, (size_t)src_tmp_array.size_in_bytes());
|
||||
memset((void*)dst_tmp_array.Data, 0, (size_t)dst_tmp_array.size_in_bytes());
|
||||
|
||||
// 1. Initialize font loading structure, check font data validity
|
||||
for (int src_i = 0; src_i < atlas->ConfigData.Size; src_i++)
|
||||
{
|
||||
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
|
||||
ImFontConfig& cfg = atlas->ConfigData[src_i];
|
||||
FreeTypeFont& font_face = src_tmp.Font;
|
||||
IM_ASSERT(cfg.DstFont && (!cfg.DstFont->IsLoaded() || cfg.DstFont->ContainerAtlas == atlas));
|
||||
|
||||
// Find index from cfg.DstFont (we allow the user to set cfg.DstFont. Also it makes casual debugging nicer than when storing indices)
|
||||
src_tmp.DstIndex = -1;
|
||||
for (int output_i = 0; output_i < atlas->Fonts.Size && src_tmp.DstIndex == -1; output_i++)
|
||||
if (cfg.DstFont == atlas->Fonts[output_i])
|
||||
src_tmp.DstIndex = output_i;
|
||||
IM_ASSERT(src_tmp.DstIndex != -1); // cfg.DstFont not pointing within atlas->Fonts[] array?
|
||||
if (src_tmp.DstIndex == -1)
|
||||
return false;
|
||||
|
||||
// Load font
|
||||
if (!font_face.InitFont(ft_library, cfg, extra_flags))
|
||||
return false;
|
||||
|
||||
// Measure highest codepoints
|
||||
src_load_color |= (cfg.FontBuilderFlags & ImGuiFreeTypeBuilderFlags_LoadColor) != 0;
|
||||
ImFontBuildDstDataFT& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
|
||||
src_tmp.SrcRanges = cfg.GlyphRanges ? cfg.GlyphRanges : atlas->GetGlyphRangesDefault();
|
||||
for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
|
||||
src_tmp.GlyphsHighest = ImMax(src_tmp.GlyphsHighest, (int)src_range[1]);
|
||||
dst_tmp.SrcCount++;
|
||||
dst_tmp.GlyphsHighest = ImMax(dst_tmp.GlyphsHighest, src_tmp.GlyphsHighest);
|
||||
}
|
||||
|
||||
// 2. For every requested codepoint, check for their presence in the font data, and handle redundancy or overlaps between source fonts to avoid unused glyphs.
|
||||
int total_glyphs_count = 0;
|
||||
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
|
||||
{
|
||||
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
|
||||
ImFontBuildDstDataFT& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
|
||||
src_tmp.GlyphsSet.Create(src_tmp.GlyphsHighest + 1);
|
||||
if (dst_tmp.GlyphsSet.Storage.empty())
|
||||
dst_tmp.GlyphsSet.Create(dst_tmp.GlyphsHighest + 1);
|
||||
|
||||
for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
|
||||
for (int codepoint = src_range[0]; codepoint <= (int)src_range[1]; codepoint++)
|
||||
{
|
||||
if (dst_tmp.GlyphsSet.TestBit(codepoint)) // Don't overwrite existing glyphs. We could make this an option (e.g. MergeOverwrite)
|
||||
continue;
|
||||
uint32_t glyph_index = FT_Get_Char_Index(src_tmp.Font.Face, codepoint); // It is actually in the font? (FIXME-OPT: We are not storing the glyph_index..)
|
||||
if (glyph_index == 0)
|
||||
continue;
|
||||
|
||||
// Add to avail set/counters
|
||||
src_tmp.GlyphsCount++;
|
||||
dst_tmp.GlyphsCount++;
|
||||
src_tmp.GlyphsSet.SetBit(codepoint);
|
||||
dst_tmp.GlyphsSet.SetBit(codepoint);
|
||||
total_glyphs_count++;
|
||||
}
|
||||
}
|
||||
|
||||
// 3. Unpack our bit map into a flat list (we now have all the Unicode points that we know are requested _and_ available _and_ not overlapping another)
|
||||
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
|
||||
{
|
||||
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
|
||||
src_tmp.GlyphsList.reserve(src_tmp.GlyphsCount);
|
||||
|
||||
IM_ASSERT(sizeof(src_tmp.GlyphsSet.Storage.Data[0]) == sizeof(ImU32));
|
||||
const ImU32* it_begin = src_tmp.GlyphsSet.Storage.begin();
|
||||
const ImU32* it_end = src_tmp.GlyphsSet.Storage.end();
|
||||
for (const ImU32* it = it_begin; it < it_end; it++)
|
||||
if (ImU32 entries_32 = *it)
|
||||
for (ImU32 bit_n = 0; bit_n < 32; bit_n++)
|
||||
if (entries_32 & ((ImU32)1 << bit_n))
|
||||
{
|
||||
ImFontBuildSrcGlyphFT src_glyph;
|
||||
src_glyph.Codepoint = (ImWchar)(((it - it_begin) << 5) + bit_n);
|
||||
//src_glyph.GlyphIndex = 0; // FIXME-OPT: We had this info in the previous step and lost it..
|
||||
src_tmp.GlyphsList.push_back(src_glyph);
|
||||
}
|
||||
src_tmp.GlyphsSet.Clear();
|
||||
IM_ASSERT(src_tmp.GlyphsList.Size == src_tmp.GlyphsCount);
|
||||
}
|
||||
for (int dst_i = 0; dst_i < dst_tmp_array.Size; dst_i++)
|
||||
dst_tmp_array[dst_i].GlyphsSet.Clear();
|
||||
dst_tmp_array.clear();
|
||||
|
||||
// Allocate packing character data and flag packed characters buffer as non-packed (x0=y0=x1=y1=0)
|
||||
// (We technically don't need to zero-clear buf_rects, but let's do it for the sake of sanity)
|
||||
ImVector<stbrp_rect> buf_rects;
|
||||
buf_rects.resize(total_glyphs_count);
|
||||
memset(buf_rects.Data, 0, (size_t)buf_rects.size_in_bytes());
|
||||
|
||||
// Allocate temporary rasterization data buffers.
|
||||
// We could not find a way to retrieve accurate glyph size without rendering them.
|
||||
// (e.g. slot->metrics->width not always matching bitmap->width, especially considering the Oblique transform)
|
||||
// We allocate in chunks of 256 KB to not waste too much extra memory ahead. Hopefully users of FreeType won't find the temporary allocations.
|
||||
const int BITMAP_BUFFERS_CHUNK_SIZE = 256 * 1024;
|
||||
int buf_bitmap_current_used_bytes = 0;
|
||||
ImVector<unsigned char*> buf_bitmap_buffers;
|
||||
buf_bitmap_buffers.push_back((unsigned char*)IM_ALLOC(BITMAP_BUFFERS_CHUNK_SIZE));
|
||||
|
||||
// 4. Gather glyphs sizes so we can pack them in our virtual canvas.
|
||||
// 8. Render/rasterize font characters into the texture
|
||||
int total_surface = 0;
|
||||
int buf_rects_out_n = 0;
|
||||
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
|
||||
{
|
||||
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
|
||||
ImFontConfig& cfg = atlas->ConfigData[src_i];
|
||||
if (src_tmp.GlyphsCount == 0)
|
||||
continue;
|
||||
|
||||
src_tmp.Rects = &buf_rects[buf_rects_out_n];
|
||||
buf_rects_out_n += src_tmp.GlyphsCount;
|
||||
|
||||
// Compute multiply table if requested
|
||||
const bool multiply_enabled = (cfg.RasterizerMultiply != 1.0f);
|
||||
unsigned char multiply_table[256];
|
||||
if (multiply_enabled)
|
||||
ImFontAtlasBuildMultiplyCalcLookupTable(multiply_table, cfg.RasterizerMultiply);
|
||||
|
||||
// Gather the sizes of all rectangles we will need to pack
|
||||
const int padding = atlas->TexGlyphPadding;
|
||||
for (int glyph_i = 0; glyph_i < src_tmp.GlyphsList.Size; glyph_i++)
|
||||
{
|
||||
ImFontBuildSrcGlyphFT& src_glyph = src_tmp.GlyphsList[glyph_i];
|
||||
|
||||
const FT_Glyph_Metrics* metrics = src_tmp.Font.LoadGlyph(src_glyph.Codepoint);
|
||||
if (metrics == NULL)
|
||||
continue;
|
||||
|
||||
// Render glyph into a bitmap (currently held by FreeType)
|
||||
const FT_Bitmap* ft_bitmap = src_tmp.Font.RenderGlyphAndGetInfo(&src_glyph.Info);
|
||||
IM_ASSERT(ft_bitmap);
|
||||
|
||||
// Allocate new temporary chunk if needed
|
||||
const int bitmap_size_in_bytes = src_glyph.Info.Width * src_glyph.Info.Height * 4;
|
||||
if (buf_bitmap_current_used_bytes + bitmap_size_in_bytes > BITMAP_BUFFERS_CHUNK_SIZE)
|
||||
{
|
||||
buf_bitmap_current_used_bytes = 0;
|
||||
buf_bitmap_buffers.push_back((unsigned char*)IM_ALLOC(BITMAP_BUFFERS_CHUNK_SIZE));
|
||||
}
|
||||
|
||||
// Blit rasterized pixels to our temporary buffer and keep a pointer to it.
|
||||
src_glyph.BitmapData = (unsigned int*)(buf_bitmap_buffers.back() + buf_bitmap_current_used_bytes);
|
||||
buf_bitmap_current_used_bytes += bitmap_size_in_bytes;
|
||||
src_tmp.Font.BlitGlyph(ft_bitmap, src_glyph.BitmapData, src_glyph.Info.Width, multiply_enabled ? multiply_table : NULL);
|
||||
|
||||
src_tmp.Rects[glyph_i].w = (stbrp_coord)(src_glyph.Info.Width + padding);
|
||||
src_tmp.Rects[glyph_i].h = (stbrp_coord)(src_glyph.Info.Height + padding);
|
||||
total_surface += src_tmp.Rects[glyph_i].w * src_tmp.Rects[glyph_i].h;
|
||||
}
|
||||
}
|
||||
|
||||
// We need a width for the skyline algorithm, any width!
|
||||
// The exact width doesn't really matter much, but some API/GPU have texture size limitations and increasing width can decrease height.
|
||||
// User can override TexDesiredWidth and TexGlyphPadding if they wish, otherwise we use a simple heuristic to select the width based on expected surface.
|
||||
const int surface_sqrt = (int)ImSqrt((float)total_surface) + 1;
|
||||
atlas->TexHeight = 0;
|
||||
if (atlas->TexDesiredWidth > 0)
|
||||
atlas->TexWidth = atlas->TexDesiredWidth;
|
||||
else
|
||||
atlas->TexWidth = (surface_sqrt >= 4096 * 0.7f) ? 4096 : (surface_sqrt >= 2048 * 0.7f) ? 2048 : (surface_sqrt >= 1024 * 0.7f) ? 1024 : 512;
|
||||
|
||||
// 5. Start packing
|
||||
// Pack our extra data rectangles first, so it will be on the upper-left corner of our texture (UV will have small values).
|
||||
const int TEX_HEIGHT_MAX = 1024 * 32;
|
||||
const int num_nodes_for_packing_algorithm = atlas->TexWidth - atlas->TexGlyphPadding;
|
||||
ImVector<stbrp_node> pack_nodes;
|
||||
pack_nodes.resize(num_nodes_for_packing_algorithm);
|
||||
stbrp_context pack_context;
|
||||
stbrp_init_target(&pack_context, atlas->TexWidth, TEX_HEIGHT_MAX, pack_nodes.Data, pack_nodes.Size);
|
||||
ImFontAtlasBuildPackCustomRects(atlas, &pack_context);
|
||||
|
||||
// 6. Pack each source font. No rendering yet, we are working with rectangles in an infinitely tall texture at this point.
|
||||
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
|
||||
{
|
||||
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
|
||||
if (src_tmp.GlyphsCount == 0)
|
||||
continue;
|
||||
|
||||
stbrp_pack_rects(&pack_context, src_tmp.Rects, src_tmp.GlyphsCount);
|
||||
|
||||
// Extend texture height and mark missing glyphs as non-packed so we won't render them.
|
||||
// FIXME: We are not handling packing failure here (would happen if we got off TEX_HEIGHT_MAX or if a single if larger than TexWidth?)
|
||||
for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
|
||||
if (src_tmp.Rects[glyph_i].was_packed)
|
||||
atlas->TexHeight = ImMax(atlas->TexHeight, src_tmp.Rects[glyph_i].y + src_tmp.Rects[glyph_i].h);
|
||||
}
|
||||
|
||||
// 7. Allocate texture
|
||||
atlas->TexHeight = (atlas->Flags & ImFontAtlasFlags_NoPowerOfTwoHeight) ? (atlas->TexHeight + 1) : ImUpperPowerOfTwo(atlas->TexHeight);
|
||||
atlas->TexUvScale = ImVec2(1.0f / atlas->TexWidth, 1.0f / atlas->TexHeight);
|
||||
if (src_load_color)
|
||||
{
|
||||
size_t tex_size = (size_t)atlas->TexWidth * atlas->TexHeight * 4;
|
||||
atlas->TexPixelsRGBA32 = (unsigned int*)IM_ALLOC(tex_size);
|
||||
memset(atlas->TexPixelsRGBA32, 0, tex_size);
|
||||
}
|
||||
else
|
||||
{
|
||||
size_t tex_size = (size_t)atlas->TexWidth * atlas->TexHeight * 1;
|
||||
atlas->TexPixelsAlpha8 = (unsigned char*)IM_ALLOC(tex_size);
|
||||
memset(atlas->TexPixelsAlpha8, 0, tex_size);
|
||||
}
|
||||
|
||||
// 8. Copy rasterized font characters back into the main texture
|
||||
// 9. Setup ImFont and glyphs for runtime
|
||||
bool tex_use_colors = false;
|
||||
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
|
||||
{
|
||||
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
|
||||
if (src_tmp.GlyphsCount == 0)
|
||||
continue;
|
||||
|
||||
// When merging fonts with MergeMode=true:
|
||||
// - We can have multiple input fonts writing into a same destination font.
|
||||
// - dst_font->ConfigData is != from cfg which is our source configuration.
|
||||
ImFontConfig& cfg = atlas->ConfigData[src_i];
|
||||
ImFont* dst_font = cfg.DstFont;
|
||||
|
||||
const float ascent = src_tmp.Font.Info.Ascender;
|
||||
const float descent = src_tmp.Font.Info.Descender;
|
||||
ImFontAtlasBuildSetupFont(atlas, dst_font, &cfg, ascent, descent);
|
||||
const float font_off_x = cfg.GlyphOffset.x;
|
||||
const float font_off_y = cfg.GlyphOffset.y + IM_ROUND(dst_font->Ascent);
|
||||
|
||||
const int padding = atlas->TexGlyphPadding;
|
||||
for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
|
||||
{
|
||||
ImFontBuildSrcGlyphFT& src_glyph = src_tmp.GlyphsList[glyph_i];
|
||||
stbrp_rect& pack_rect = src_tmp.Rects[glyph_i];
|
||||
IM_ASSERT(pack_rect.was_packed);
|
||||
if (pack_rect.w == 0 && pack_rect.h == 0)
|
||||
continue;
|
||||
|
||||
GlyphInfo& info = src_glyph.Info;
|
||||
IM_ASSERT(info.Width + padding <= pack_rect.w);
|
||||
IM_ASSERT(info.Height + padding <= pack_rect.h);
|
||||
const int tx = pack_rect.x + padding;
|
||||
const int ty = pack_rect.y + padding;
|
||||
|
||||
// Register glyph
|
||||
float x0 = info.OffsetX + font_off_x;
|
||||
float y0 = info.OffsetY + font_off_y;
|
||||
float x1 = x0 + info.Width;
|
||||
float y1 = y0 + info.Height;
|
||||
float u0 = (tx) / (float)atlas->TexWidth;
|
||||
float v0 = (ty) / (float)atlas->TexHeight;
|
||||
float u1 = (tx + info.Width) / (float)atlas->TexWidth;
|
||||
float v1 = (ty + info.Height) / (float)atlas->TexHeight;
|
||||
dst_font->AddGlyph(&cfg, (ImWchar)src_glyph.Codepoint, x0, y0, x1, y1, u0, v0, u1, v1, info.AdvanceX);
|
||||
|
||||
ImFontGlyph* dst_glyph = &dst_font->Glyphs.back();
|
||||
IM_ASSERT(dst_glyph->Codepoint == src_glyph.Codepoint);
|
||||
if (src_glyph.Info.IsColored)
|
||||
dst_glyph->Colored = tex_use_colors = true;
|
||||
|
||||
// Blit from temporary buffer to final texture
|
||||
size_t blit_src_stride = (size_t)src_glyph.Info.Width;
|
||||
size_t blit_dst_stride = (size_t)atlas->TexWidth;
|
||||
unsigned int* blit_src = src_glyph.BitmapData;
|
||||
if (atlas->TexPixelsAlpha8 != NULL)
|
||||
{
|
||||
unsigned char* blit_dst = atlas->TexPixelsAlpha8 + (ty * blit_dst_stride) + tx;
|
||||
for (int y = 0; y < info.Height; y++, blit_dst += blit_dst_stride, blit_src += blit_src_stride)
|
||||
for (int x = 0; x < info.Width; x++)
|
||||
blit_dst[x] = (unsigned char)((blit_src[x] >> IM_COL32_A_SHIFT) & 0xFF);
|
||||
}
|
||||
else
|
||||
{
|
||||
unsigned int* blit_dst = atlas->TexPixelsRGBA32 + (ty * blit_dst_stride) + tx;
|
||||
for (int y = 0; y < info.Height; y++, blit_dst += blit_dst_stride, blit_src += blit_src_stride)
|
||||
for (int x = 0; x < info.Width; x++)
|
||||
blit_dst[x] = blit_src[x];
|
||||
}
|
||||
}
|
||||
|
||||
src_tmp.Rects = NULL;
|
||||
}
|
||||
atlas->TexPixelsUseColors = tex_use_colors;
|
||||
|
||||
// Cleanup
|
||||
for (int buf_i = 0; buf_i < buf_bitmap_buffers.Size; buf_i++)
|
||||
IM_FREE(buf_bitmap_buffers[buf_i]);
|
||||
src_tmp_array.clear_destruct();
|
||||
|
||||
ImFontAtlasBuildFinish(atlas);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
// FreeType memory allocation callbacks
|
||||
static void* FreeType_Alloc(FT_Memory /*memory*/, long size)
|
||||
{
|
||||
return GImGuiFreeTypeAllocFunc((size_t)size, GImGuiFreeTypeAllocatorUserData);
|
||||
}
|
||||
|
||||
static void FreeType_Free(FT_Memory /*memory*/, void* block)
|
||||
{
|
||||
GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
|
||||
}
|
||||
|
||||
static void* FreeType_Realloc(FT_Memory /*memory*/, long cur_size, long new_size, void* block)
|
||||
{
|
||||
// Implement realloc() as we don't ask user to provide it.
|
||||
if (block == NULL)
|
||||
return GImGuiFreeTypeAllocFunc((size_t)new_size, GImGuiFreeTypeAllocatorUserData);
|
||||
|
||||
if (new_size == 0)
|
||||
{
|
||||
GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (new_size > cur_size)
|
||||
{
|
||||
void* new_block = GImGuiFreeTypeAllocFunc((size_t)new_size, GImGuiFreeTypeAllocatorUserData);
|
||||
memcpy(new_block, block, (size_t)cur_size);
|
||||
GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
|
||||
return new_block;
|
||||
}
|
||||
|
||||
return block;
|
||||
}
|
||||
|
||||
static bool ImFontAtlasBuildWithFreeType(ImFontAtlas* atlas)
|
||||
{
|
||||
// FreeType memory management: https://www.freetype.org/freetype2/docs/design/design-4.html
|
||||
FT_MemoryRec_ memory_rec = {};
|
||||
memory_rec.user = NULL;
|
||||
memory_rec.alloc = &FreeType_Alloc;
|
||||
memory_rec.free = &FreeType_Free;
|
||||
memory_rec.realloc = &FreeType_Realloc;
|
||||
|
||||
// https://www.freetype.org/freetype2/docs/reference/ft2-module_management.html#FT_New_Library
|
||||
FT_Library ft_library;
|
||||
FT_Error error = FT_New_Library(&memory_rec, &ft_library);
|
||||
if (error != 0)
|
||||
return false;
|
||||
|
||||
// If you don't call FT_Add_Default_Modules() the rest of code may work, but FreeType won't use our custom allocator.
|
||||
FT_Add_Default_Modules(ft_library);
|
||||
|
||||
bool ret = ImFontAtlasBuildWithFreeTypeEx(ft_library, atlas, atlas->FontBuilderFlags);
|
||||
FT_Done_Library(ft_library);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
const ImFontBuilderIO* ImGuiFreeType::GetBuilderForFreeType()
|
||||
{
|
||||
static ImFontBuilderIO io;
|
||||
io.FontBuilder_Build = ImFontAtlasBuildWithFreeType;
|
||||
return &io;
|
||||
}
|
||||
|
||||
void ImGuiFreeType::SetAllocatorFunctions(void* (*alloc_func)(size_t sz, void* user_data), void (*free_func)(void* ptr, void* user_data), void* user_data)
|
||||
{
|
||||
GImGuiFreeTypeAllocFunc = alloc_func;
|
||||
GImGuiFreeTypeFreeFunc = free_func;
|
||||
GImGuiFreeTypeAllocatorUserData = user_data;
|
||||
}
|
||||
965
lib/external/imgui/source/imgui_impl_glfw.cpp
vendored
Normal file
965
lib/external/imgui/source/imgui_impl_glfw.cpp
vendored
Normal file
@@ -0,0 +1,965 @@
|
||||
// dear imgui: Platform Backend for GLFW
|
||||
// This needs to be used along with a Renderer (e.g. OpenGL3, Vulkan, WebGPU..)
|
||||
// (Info: GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.)
|
||||
// (Requires: GLFW 3.1+. Prefer GLFW 3.3+ for full feature support.)
|
||||
|
||||
// Implemented features:
|
||||
// [X] Platform: Clipboard support.
|
||||
// [X] Platform: Gamepad support. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
|
||||
// [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange' (note: the resizing cursors requires GLFW 3.4+).
|
||||
// [X] Platform: Keyboard arrays indexed using GLFW_KEY_* codes, e.g. ImGui::IsKeyPressed(GLFW_KEY_SPACE).
|
||||
// [X] Platform: Multi-viewport support (multiple windows). Enable with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable'.
|
||||
|
||||
// Issues:
|
||||
// [ ] Platform: Multi-viewport support: ParentViewportID not honored, and so io.ConfigViewportsNoDefaultParent has no effect (minor).
|
||||
|
||||
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
|
||||
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
|
||||
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
|
||||
// Read online: https://github.com/ocornut/imgui/tree/master/docs
|
||||
|
||||
// CHANGELOG
|
||||
// (minor and older changes stripped away, please see git history for details)
|
||||
// 2021-XX-XX: Platform: Added support for multiple windows via the ImGuiPlatformIO interface.
|
||||
// 2021-08-17: *BREAKING CHANGE*: Now using glfwSetWindowFocusCallback() to calling io.AddFocusEvent(). If you called ImGui_ImplGlfw_InitXXX() with install_callbacks = false, you MUST install glfwSetWindowFocusCallback() and forward it to the backend via ImGui_ImplGlfw_WindowFocusCallback().
|
||||
// 2021-07-29: *BREAKING CHANGE*: Now using glfwSetCursorEnterCallback(). MousePos is correctly reported when the host platform window is hovered but not focused. If you called ImGui_ImplGlfw_InitXXX() with install_callbacks = false, you MUST install glfwSetWindowFocusCallback() callback and forward it to the backend via ImGui_ImplGlfw_CursorEnterCallback().
|
||||
// 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
|
||||
// 2020-01-17: Inputs: Disable error callback while assigning mouse cursors because some X11 setup don't have them and it generates errors.
|
||||
// 2019-12-05: Inputs: Added support for new mouse cursors added in GLFW 3.4+ (resizing cursors, not allowed cursor).
|
||||
// 2019-10-18: Misc: Previously installed user callbacks are now restored on shutdown.
|
||||
// 2019-07-21: Inputs: Added mapping for ImGuiKey_KeyPadEnter.
|
||||
// 2019-05-11: Inputs: Don't filter value from character callback before calling AddInputCharacter().
|
||||
// 2019-03-12: Misc: Preserve DisplayFramebufferScale when main window is minimized.
|
||||
// 2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.
|
||||
// 2018-11-07: Inputs: When installing our GLFW callbacks, we save user's previously installed ones - if any - and chain call them.
|
||||
// 2018-08-01: Inputs: Workaround for Emscripten which doesn't seem to handle focus related calls.
|
||||
// 2018-06-29: Inputs: Added support for the ImGuiMouseCursor_Hand cursor.
|
||||
// 2018-06-08: Misc: Extracted imgui_impl_glfw.cpp/.h away from the old combined GLFW+OpenGL/Vulkan examples.
|
||||
// 2018-03-20: Misc: Setup io.BackendFlags ImGuiBackendFlags_HasMouseCursors flag + honor ImGuiConfigFlags_NoMouseCursorChange flag.
|
||||
// 2018-02-20: Inputs: Added support for mouse cursors (ImGui::GetMouseCursor() value, passed to glfwSetCursor()).
|
||||
// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
|
||||
// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space.
|
||||
// 2018-01-25: Inputs: Added gamepad support if ImGuiConfigFlags_NavEnableGamepad is set.
|
||||
// 2018-01-25: Inputs: Honoring the io.WantSetMousePos by repositioning the mouse (when using navigation and ImGuiConfigFlags_NavMoveMouse is set).
|
||||
// 2018-01-20: Inputs: Added Horizontal Mouse Wheel support.
|
||||
// 2018-01-18: Inputs: Added mapping for ImGuiKey_Insert.
|
||||
// 2017-08-25: Inputs: MousePos set to -FLT_MAX,-FLT_MAX when mouse is unavailable/missing (instead of -1,-1).
|
||||
// 2016-10-15: Misc: Added a void* user_data parameter to Clipboard function handlers.
|
||||
|
||||
#include "imgui.h"
|
||||
#include "imgui_impl_glfw.h"
|
||||
|
||||
// GLFW
|
||||
#include <GLFW/glfw3.h>
|
||||
#ifdef _WIN32
|
||||
#undef APIENTRY
|
||||
#define GLFW_EXPOSE_NATIVE_WIN32
|
||||
#include <GLFW/glfw3native.h> // for glfwGetWin32Window
|
||||
#endif
|
||||
#define GLFW_HAS_WINDOW_TOPMOST (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ GLFW_FLOATING
|
||||
#define GLFW_HAS_WINDOW_HOVERED (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ GLFW_HOVERED
|
||||
#define GLFW_HAS_WINDOW_ALPHA (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwSetWindowOpacity
|
||||
#define GLFW_HAS_PER_MONITOR_DPI (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwGetMonitorContentScale
|
||||
#define GLFW_HAS_VULKAN (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ glfwCreateWindowSurface
|
||||
#define GLFW_HAS_FOCUS_WINDOW (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ glfwFocusWindow
|
||||
#define GLFW_HAS_FOCUS_ON_SHOW (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ GLFW_FOCUS_ON_SHOW
|
||||
#define GLFW_HAS_MONITOR_WORK_AREA (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwGetMonitorWorkarea
|
||||
#define GLFW_HAS_OSX_WINDOW_POS_FIX (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 + GLFW_VERSION_REVISION * 10 >= 3310) // 3.3.1+ Fixed: Resizing window repositions it on MacOS #1553
|
||||
#ifdef GLFW_RESIZE_NESW_CURSOR // Let's be nice to people who pulled GLFW between 2019-04-16 (3.4 define) and 2019-11-29 (cursors defines) // FIXME: Remove when GLFW 3.4 is released?
|
||||
#define GLFW_HAS_NEW_CURSORS (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3400) // 3.4+ GLFW_RESIZE_ALL_CURSOR, GLFW_RESIZE_NESW_CURSOR, GLFW_RESIZE_NWSE_CURSOR, GLFW_NOT_ALLOWED_CURSOR
|
||||
#else
|
||||
#define GLFW_HAS_NEW_CURSORS (0)
|
||||
#endif
|
||||
#ifdef GLFW_MOUSE_PASSTHROUGH // Let's be nice to people who pulled GLFW between 2019-04-16 (3.4 define) and 2020-07-17 (passthrough)
|
||||
#define GLFW_HAS_MOUSE_PASSTHROUGH (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3400) // 3.4+ GLFW_MOUSE_PASSTHROUGH
|
||||
#else
|
||||
#define GLFW_HAS_MOUSE_PASSTHROUGH (0)
|
||||
#endif
|
||||
|
||||
// GLFW data
|
||||
enum GlfwClientApi
|
||||
{
|
||||
GlfwClientApi_Unknown,
|
||||
GlfwClientApi_OpenGL,
|
||||
GlfwClientApi_Vulkan
|
||||
};
|
||||
|
||||
struct ImGui_ImplGlfw_Data
|
||||
{
|
||||
GLFWwindow* Window;
|
||||
GlfwClientApi ClientApi;
|
||||
double Time;
|
||||
GLFWwindow* MouseWindow;
|
||||
bool MouseJustPressed[ImGuiMouseButton_COUNT];
|
||||
GLFWcursor* MouseCursors[ImGuiMouseCursor_COUNT];
|
||||
GLFWwindow* KeyOwnerWindows[512];
|
||||
bool InstalledCallbacks;
|
||||
bool WantUpdateMonitors;
|
||||
|
||||
// Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any.
|
||||
GLFWwindowfocusfun PrevUserCallbackWindowFocus;
|
||||
GLFWcursorenterfun PrevUserCallbackCursorEnter;
|
||||
GLFWmousebuttonfun PrevUserCallbackMousebutton;
|
||||
GLFWscrollfun PrevUserCallbackScroll;
|
||||
GLFWkeyfun PrevUserCallbackKey;
|
||||
GLFWcharfun PrevUserCallbackChar;
|
||||
GLFWmonitorfun PrevUserCallbackMonitor;
|
||||
|
||||
ImGui_ImplGlfw_Data() { memset(this, 0, sizeof(*this)); }
|
||||
};
|
||||
|
||||
// Backend data stored in io.BackendPlatformUserData to allow support for multiple Dear ImGui contexts
|
||||
// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
|
||||
// FIXME: multi-context support is not well tested and probably dysfunctional in this backend.
|
||||
// - Because glfwPollEvents() process all windows and some events may be called outside of it, you will need to register your own callbacks
|
||||
// (passing install_callbacks=false in ImGui_ImplGlfw_InitXXX functions), set the current dear imgui context and then call our callbacks.
|
||||
// - Otherwise we may need to store a GLFWWindow* -> ImGuiContext* map and handle this in the backend, adding a little bit of extra complexity to it.
|
||||
// FIXME: some shared resources (mouse cursor shape, gamepad) are mishandled when using multi-context.
|
||||
static ImGui_ImplGlfw_Data* ImGui_ImplGlfw_GetBackendData()
|
||||
{
|
||||
return ImGui::GetCurrentContext() ? (ImGui_ImplGlfw_Data*)ImGui::GetIO().BackendPlatformUserData : NULL;
|
||||
}
|
||||
|
||||
// Forward Declarations
|
||||
static void ImGui_ImplGlfw_UpdateMonitors();
|
||||
static void ImGui_ImplGlfw_InitPlatformInterface();
|
||||
static void ImGui_ImplGlfw_ShutdownPlatformInterface();
|
||||
|
||||
// Functions
|
||||
static const char* ImGui_ImplGlfw_GetClipboardText(void* user_data)
|
||||
{
|
||||
return glfwGetClipboardString((GLFWwindow*)user_data);
|
||||
}
|
||||
|
||||
static void ImGui_ImplGlfw_SetClipboardText(void* user_data, const char* text)
|
||||
{
|
||||
glfwSetClipboardString((GLFWwindow*)user_data, text);
|
||||
}
|
||||
|
||||
void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods)
|
||||
{
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
if (bd->PrevUserCallbackMousebutton != NULL && window == bd->Window)
|
||||
bd->PrevUserCallbackMousebutton(window, button, action, mods);
|
||||
|
||||
if (action == GLFW_PRESS && button >= 0 && button < IM_ARRAYSIZE(bd->MouseJustPressed))
|
||||
bd->MouseJustPressed[button] = true;
|
||||
}
|
||||
|
||||
void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset)
|
||||
{
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
if (bd->PrevUserCallbackScroll != NULL && window == bd->Window)
|
||||
bd->PrevUserCallbackScroll(window, xoffset, yoffset);
|
||||
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
io.MouseWheelH += (float)xoffset;
|
||||
io.MouseWheel += (float)yoffset;
|
||||
}
|
||||
|
||||
void ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods)
|
||||
{
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
if (bd->PrevUserCallbackKey != NULL && window == bd->Window)
|
||||
bd->PrevUserCallbackKey(window, key, scancode, action, mods);
|
||||
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
if (key >= 0 && key < IM_ARRAYSIZE(io.KeysDown))
|
||||
{
|
||||
if (action == GLFW_PRESS)
|
||||
{
|
||||
io.KeysDown[key] = true;
|
||||
bd->KeyOwnerWindows[key] = window;
|
||||
}
|
||||
if (action == GLFW_RELEASE)
|
||||
{
|
||||
io.KeysDown[key] = false;
|
||||
bd->KeyOwnerWindows[key] = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
// Modifiers are not reliable across systems
|
||||
io.KeyCtrl = io.KeysDown[GLFW_KEY_LEFT_CONTROL] || io.KeysDown[GLFW_KEY_RIGHT_CONTROL];
|
||||
io.KeyShift = io.KeysDown[GLFW_KEY_LEFT_SHIFT] || io.KeysDown[GLFW_KEY_RIGHT_SHIFT];
|
||||
io.KeyAlt = io.KeysDown[GLFW_KEY_LEFT_ALT] || io.KeysDown[GLFW_KEY_RIGHT_ALT];
|
||||
#ifdef _WIN32
|
||||
io.KeySuper = false;
|
||||
#else
|
||||
io.KeySuper = io.KeysDown[GLFW_KEY_LEFT_SUPER] || io.KeysDown[GLFW_KEY_RIGHT_SUPER];
|
||||
#endif
|
||||
}
|
||||
|
||||
void ImGui_ImplGlfw_WindowFocusCallback(GLFWwindow* window, int focused)
|
||||
{
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
if (bd->PrevUserCallbackWindowFocus != NULL && window == bd->Window)
|
||||
bd->PrevUserCallbackWindowFocus(window, focused);
|
||||
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
io.AddFocusEvent(focused != 0);
|
||||
}
|
||||
|
||||
void ImGui_ImplGlfw_CursorEnterCallback(GLFWwindow* window, int entered)
|
||||
{
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
if (bd->PrevUserCallbackCursorEnter != NULL && window == bd->Window)
|
||||
bd->PrevUserCallbackCursorEnter(window, entered);
|
||||
|
||||
if (entered)
|
||||
bd->MouseWindow = window;
|
||||
if (!entered && bd->MouseWindow == window)
|
||||
bd->MouseWindow = NULL;
|
||||
}
|
||||
|
||||
void ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c)
|
||||
{
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
if (bd->PrevUserCallbackChar != NULL && window == bd->Window)
|
||||
bd->PrevUserCallbackChar(window, c);
|
||||
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
io.AddInputCharacter(c);
|
||||
}
|
||||
|
||||
void ImGui_ImplGlfw_MonitorCallback(GLFWmonitor*, int)
|
||||
{
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
bd->WantUpdateMonitors = true;
|
||||
}
|
||||
|
||||
static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, GlfwClientApi client_api)
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
IM_ASSERT(io.BackendPlatformUserData == NULL && "Already initialized a platform backend!");
|
||||
|
||||
// Setup backend capabilities flags
|
||||
ImGui_ImplGlfw_Data* bd = IM_NEW(ImGui_ImplGlfw_Data)();
|
||||
io.BackendPlatformUserData = (void*)bd;
|
||||
io.BackendPlatformName = "imgui_impl_glfw";
|
||||
io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors; // We can honor GetMouseCursor() values (optional)
|
||||
io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos; // We can honor io.WantSetMousePos requests (optional, rarely used)
|
||||
io.BackendFlags |= ImGuiBackendFlags_PlatformHasViewports; // We can create multi-viewports on the Platform side (optional)
|
||||
#if GLFW_HAS_MOUSE_PASSTHROUGH || (GLFW_HAS_WINDOW_HOVERED && defined(_WIN32))
|
||||
io.BackendFlags |= ImGuiBackendFlags_HasMouseHoveredViewport; // We can set io.MouseHoveredViewport correctly (optional, not easy)
|
||||
#endif
|
||||
|
||||
bd->Window = window;
|
||||
bd->Time = 0.0;
|
||||
bd->WantUpdateMonitors = true;
|
||||
|
||||
// Keyboard mapping. Dear ImGui will use those indices to peek into the io.KeysDown[] array.
|
||||
io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB;
|
||||
io.KeyMap[ImGuiKey_LeftArrow] = GLFW_KEY_LEFT;
|
||||
io.KeyMap[ImGuiKey_RightArrow] = GLFW_KEY_RIGHT;
|
||||
io.KeyMap[ImGuiKey_UpArrow] = GLFW_KEY_UP;
|
||||
io.KeyMap[ImGuiKey_DownArrow] = GLFW_KEY_DOWN;
|
||||
io.KeyMap[ImGuiKey_PageUp] = GLFW_KEY_PAGE_UP;
|
||||
io.KeyMap[ImGuiKey_PageDown] = GLFW_KEY_PAGE_DOWN;
|
||||
io.KeyMap[ImGuiKey_Home] = GLFW_KEY_HOME;
|
||||
io.KeyMap[ImGuiKey_End] = GLFW_KEY_END;
|
||||
io.KeyMap[ImGuiKey_Insert] = GLFW_KEY_INSERT;
|
||||
io.KeyMap[ImGuiKey_Delete] = GLFW_KEY_DELETE;
|
||||
io.KeyMap[ImGuiKey_Backspace] = GLFW_KEY_BACKSPACE;
|
||||
io.KeyMap[ImGuiKey_Space] = GLFW_KEY_SPACE;
|
||||
io.KeyMap[ImGuiKey_Enter] = GLFW_KEY_ENTER;
|
||||
io.KeyMap[ImGuiKey_Escape] = GLFW_KEY_ESCAPE;
|
||||
io.KeyMap[ImGuiKey_KeyPadEnter] = GLFW_KEY_KP_ENTER;
|
||||
io.KeyMap[ImGuiKey_A] = GLFW_KEY_A;
|
||||
io.KeyMap[ImGuiKey_C] = GLFW_KEY_C;
|
||||
io.KeyMap[ImGuiKey_V] = GLFW_KEY_V;
|
||||
io.KeyMap[ImGuiKey_X] = GLFW_KEY_X;
|
||||
io.KeyMap[ImGuiKey_Y] = GLFW_KEY_Y;
|
||||
io.KeyMap[ImGuiKey_Z] = GLFW_KEY_Z;
|
||||
|
||||
io.SetClipboardTextFn = ImGui_ImplGlfw_SetClipboardText;
|
||||
io.GetClipboardTextFn = ImGui_ImplGlfw_GetClipboardText;
|
||||
io.ClipboardUserData = bd->Window;
|
||||
|
||||
// Create mouse cursors
|
||||
// (By design, on X11 cursors are user configurable and some cursors may be missing. When a cursor doesn't exist,
|
||||
// GLFW will emit an error which will often be printed by the app, so we temporarily disable error reporting.
|
||||
// Missing cursors will return NULL and our _UpdateMouseCursor() function will use the Arrow cursor instead.)
|
||||
GLFWerrorfun prev_error_callback = glfwSetErrorCallback(NULL);
|
||||
bd->MouseCursors[ImGuiMouseCursor_Arrow] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
|
||||
bd->MouseCursors[ImGuiMouseCursor_TextInput] = glfwCreateStandardCursor(GLFW_IBEAM_CURSOR);
|
||||
bd->MouseCursors[ImGuiMouseCursor_ResizeNS] = glfwCreateStandardCursor(GLFW_VRESIZE_CURSOR);
|
||||
bd->MouseCursors[ImGuiMouseCursor_ResizeEW] = glfwCreateStandardCursor(GLFW_HRESIZE_CURSOR);
|
||||
bd->MouseCursors[ImGuiMouseCursor_Hand] = glfwCreateStandardCursor(GLFW_HAND_CURSOR);
|
||||
#if GLFW_HAS_NEW_CURSORS
|
||||
bd->MouseCursors[ImGuiMouseCursor_ResizeAll] = glfwCreateStandardCursor(GLFW_RESIZE_ALL_CURSOR);
|
||||
bd->MouseCursors[ImGuiMouseCursor_ResizeNESW] = glfwCreateStandardCursor(GLFW_RESIZE_NESW_CURSOR);
|
||||
bd->MouseCursors[ImGuiMouseCursor_ResizeNWSE] = glfwCreateStandardCursor(GLFW_RESIZE_NWSE_CURSOR);
|
||||
bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = glfwCreateStandardCursor(GLFW_NOT_ALLOWED_CURSOR);
|
||||
#else
|
||||
bd->MouseCursors[ImGuiMouseCursor_ResizeAll] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
|
||||
bd->MouseCursors[ImGuiMouseCursor_ResizeNESW] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
|
||||
bd->MouseCursors[ImGuiMouseCursor_ResizeNWSE] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
|
||||
bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
|
||||
#endif
|
||||
glfwSetErrorCallback(prev_error_callback);
|
||||
|
||||
// Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any.
|
||||
bd->PrevUserCallbackWindowFocus = NULL;
|
||||
bd->PrevUserCallbackMousebutton = NULL;
|
||||
bd->PrevUserCallbackScroll = NULL;
|
||||
bd->PrevUserCallbackKey = NULL;
|
||||
bd->PrevUserCallbackChar = NULL;
|
||||
bd->PrevUserCallbackMonitor = NULL;
|
||||
if (install_callbacks)
|
||||
{
|
||||
bd->InstalledCallbacks = true;
|
||||
bd->PrevUserCallbackWindowFocus = glfwSetWindowFocusCallback(window, ImGui_ImplGlfw_WindowFocusCallback);
|
||||
bd->PrevUserCallbackCursorEnter = glfwSetCursorEnterCallback(window, ImGui_ImplGlfw_CursorEnterCallback);
|
||||
bd->PrevUserCallbackMousebutton = glfwSetMouseButtonCallback(window, ImGui_ImplGlfw_MouseButtonCallback);
|
||||
bd->PrevUserCallbackScroll = glfwSetScrollCallback(window, ImGui_ImplGlfw_ScrollCallback);
|
||||
bd->PrevUserCallbackKey = glfwSetKeyCallback(window, ImGui_ImplGlfw_KeyCallback);
|
||||
bd->PrevUserCallbackChar = glfwSetCharCallback(window, ImGui_ImplGlfw_CharCallback);
|
||||
bd->PrevUserCallbackMonitor = glfwSetMonitorCallback(ImGui_ImplGlfw_MonitorCallback);
|
||||
}
|
||||
|
||||
// Update monitors the first time (note: monitor callback are broken in GLFW 3.2 and earlier, see github.com/glfw/glfw/issues/784)
|
||||
ImGui_ImplGlfw_UpdateMonitors();
|
||||
glfwSetMonitorCallback(ImGui_ImplGlfw_MonitorCallback);
|
||||
|
||||
// Our mouse update function expect PlatformHandle to be filled for the main viewport
|
||||
ImGuiViewport* main_viewport = ImGui::GetMainViewport();
|
||||
main_viewport->PlatformHandle = (void*)bd->Window;
|
||||
#ifdef _WIN32
|
||||
main_viewport->PlatformHandleRaw = glfwGetWin32Window(bd->Window);
|
||||
#endif
|
||||
if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
|
||||
ImGui_ImplGlfw_InitPlatformInterface();
|
||||
|
||||
bd->ClientApi = client_api;
|
||||
return true;
|
||||
}
|
||||
|
||||
bool ImGui_ImplGlfw_InitForOpenGL(GLFWwindow* window, bool install_callbacks)
|
||||
{
|
||||
return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_OpenGL);
|
||||
}
|
||||
|
||||
bool ImGui_ImplGlfw_InitForVulkan(GLFWwindow* window, bool install_callbacks)
|
||||
{
|
||||
return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_Vulkan);
|
||||
}
|
||||
|
||||
bool ImGui_ImplGlfw_InitForOther(GLFWwindow* window, bool install_callbacks)
|
||||
{
|
||||
return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_Unknown);
|
||||
}
|
||||
|
||||
void ImGui_ImplGlfw_Shutdown()
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
|
||||
ImGui_ImplGlfw_ShutdownPlatformInterface();
|
||||
|
||||
if (bd->InstalledCallbacks)
|
||||
{
|
||||
glfwSetWindowFocusCallback(bd->Window, bd->PrevUserCallbackWindowFocus);
|
||||
glfwSetCursorEnterCallback(bd->Window, bd->PrevUserCallbackCursorEnter);
|
||||
glfwSetMouseButtonCallback(bd->Window, bd->PrevUserCallbackMousebutton);
|
||||
glfwSetScrollCallback(bd->Window, bd->PrevUserCallbackScroll);
|
||||
glfwSetKeyCallback(bd->Window, bd->PrevUserCallbackKey);
|
||||
glfwSetCharCallback(bd->Window, bd->PrevUserCallbackChar);
|
||||
glfwSetMonitorCallback(bd->PrevUserCallbackMonitor);
|
||||
}
|
||||
|
||||
for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
|
||||
glfwDestroyCursor(bd->MouseCursors[cursor_n]);
|
||||
|
||||
io.BackendPlatformName = NULL;
|
||||
io.BackendPlatformUserData = NULL;
|
||||
IM_DELETE(bd);
|
||||
}
|
||||
|
||||
static void ImGui_ImplGlfw_UpdateMousePosAndButtons()
|
||||
{
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
|
||||
|
||||
const ImVec2 mouse_pos_prev = io.MousePos;
|
||||
io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
|
||||
io.MouseHoveredViewport = 0;
|
||||
|
||||
// Update mouse buttons
|
||||
// (if a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame)
|
||||
for (int i = 0; i < IM_ARRAYSIZE(io.MouseDown); i++)
|
||||
{
|
||||
io.MouseDown[i] = bd->MouseJustPressed[i] || glfwGetMouseButton(bd->Window, i) != 0;
|
||||
bd->MouseJustPressed[i] = false;
|
||||
}
|
||||
|
||||
for (int n = 0; n < platform_io.Viewports.Size; n++)
|
||||
{
|
||||
ImGuiViewport* viewport = platform_io.Viewports[n];
|
||||
GLFWwindow* window = (GLFWwindow*)viewport->PlatformHandle;
|
||||
|
||||
#ifdef __EMSCRIPTEN__
|
||||
const bool focused = true;
|
||||
#else
|
||||
const bool focused = glfwGetWindowAttrib(window, GLFW_FOCUSED) != 0;
|
||||
#endif
|
||||
GLFWwindow* mouse_window = (bd->MouseWindow == window || focused) ? window : NULL;
|
||||
|
||||
// Update mouse buttons
|
||||
if (focused)
|
||||
for (int i = 0; i < IM_ARRAYSIZE(io.MouseDown); i++)
|
||||
io.MouseDown[i] |= glfwGetMouseButton(window, i) != 0;
|
||||
|
||||
// Set OS mouse position from Dear ImGui if requested (rarely used, only when ImGuiConfigFlags_NavEnableSetMousePos is enabled by user)
|
||||
// (When multi-viewports are enabled, all Dear ImGui positions are same as OS positions)
|
||||
if (io.WantSetMousePos && focused)
|
||||
glfwSetCursorPos(window, (double)(mouse_pos_prev.x - viewport->Pos.x), (double)(mouse_pos_prev.y - viewport->Pos.y));
|
||||
|
||||
// Set Dear ImGui mouse position from OS position
|
||||
if (mouse_window != NULL)
|
||||
{
|
||||
double mouse_x, mouse_y;
|
||||
glfwGetCursorPos(mouse_window, &mouse_x, &mouse_y);
|
||||
if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
|
||||
{
|
||||
// Multi-viewport mode: mouse position in OS absolute coordinates (io.MousePos is (0,0) when the mouse is on the upper-left of the primary monitor)
|
||||
int window_x, window_y;
|
||||
glfwGetWindowPos(window, &window_x, &window_y);
|
||||
io.MousePos = ImVec2((float)mouse_x + window_x, (float)mouse_y + window_y);
|
||||
}
|
||||
else
|
||||
{
|
||||
// Single viewport mode: mouse position in client window coordinates (io.MousePos is (0,0) when the mouse is on the upper-left corner of the app window)
|
||||
io.MousePos = ImVec2((float)mouse_x, (float)mouse_y);
|
||||
}
|
||||
}
|
||||
|
||||
// (Optional) When using multiple viewports: set io.MouseHoveredViewport to the viewport the OS mouse cursor is hovering.
|
||||
// Important: this information is not easy to provide and many high-level windowing library won't be able to provide it correctly, because
|
||||
// - This is _ignoring_ viewports with the ImGuiViewportFlags_NoInputs flag (pass-through windows).
|
||||
// - This is _regardless_ of whether another viewport is focused or being dragged from.
|
||||
// If ImGuiBackendFlags_HasMouseHoveredViewport is not set by the backend, imgui will ignore this field and infer the information by relying on the
|
||||
// rectangles and last focused time of every viewports it knows about. It will be unaware of other windows that may be sitting between or over your windows.
|
||||
// [GLFW] FIXME: This is currently only correct on Win32. See what we do below with the WM_NCHITTEST, missing an equivalent for other systems.
|
||||
// See https://github.com/glfw/glfw/issues/1236 if you want to help in making this a GLFW feature.
|
||||
#if GLFW_HAS_MOUSE_PASSTHROUGH || (GLFW_HAS_WINDOW_HOVERED && defined(_WIN32))
|
||||
const bool window_no_input = (viewport->Flags & ImGuiViewportFlags_NoInputs) != 0;
|
||||
#if GLFW_HAS_MOUSE_PASSTHROUGH
|
||||
glfwSetWindowAttrib(window, GLFW_MOUSE_PASSTHROUGH, window_no_input);
|
||||
#endif
|
||||
if (glfwGetWindowAttrib(window, GLFW_HOVERED) && !window_no_input)
|
||||
io.MouseHoveredViewport = viewport->ID;
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
static void ImGui_ImplGlfw_UpdateMouseCursor()
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
if ((io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange) || glfwGetInputMode(bd->Window, GLFW_CURSOR) == GLFW_CURSOR_DISABLED)
|
||||
return;
|
||||
|
||||
ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor();
|
||||
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
|
||||
for (int n = 0; n < platform_io.Viewports.Size; n++)
|
||||
{
|
||||
GLFWwindow* window = (GLFWwindow*)platform_io.Viewports[n]->PlatformHandle;
|
||||
if (imgui_cursor == ImGuiMouseCursor_None || io.MouseDrawCursor)
|
||||
{
|
||||
// Hide OS mouse cursor if imgui is drawing it or if it wants no cursor
|
||||
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
|
||||
}
|
||||
else
|
||||
{
|
||||
#if !defined(OS_WINDOWS)
|
||||
// Show OS mouse cursor
|
||||
// FIXME-PLATFORM: Unfocused windows seems to fail changing the mouse cursor with GLFW 3.2, but 3.3 works here.
|
||||
glfwSetCursor(window, bd->MouseCursors[imgui_cursor] ? bd->MouseCursors[imgui_cursor] : bd->MouseCursors[ImGuiMouseCursor_Arrow]);
|
||||
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
|
||||
#endif
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void ImGui_ImplGlfw_UpdateGamepads()
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
memset(io.NavInputs, 0, sizeof(io.NavInputs));
|
||||
if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0)
|
||||
return;
|
||||
|
||||
// Update gamepad inputs
|
||||
#define MAP_BUTTON(NAV_NO, BUTTON_NO) { if (buttons_count > BUTTON_NO && buttons[BUTTON_NO] == GLFW_PRESS) io.NavInputs[NAV_NO] = 1.0f; }
|
||||
#define MAP_ANALOG(NAV_NO, AXIS_NO, V0, V1) { float v = (axes_count > AXIS_NO) ? axes[AXIS_NO] : V0; v = (v - V0) / (V1 - V0); if (v > 1.0f) v = 1.0f; if (io.NavInputs[NAV_NO] < v) io.NavInputs[NAV_NO] = v; }
|
||||
int axes_count = 0, buttons_count = 0;
|
||||
const float* axes = glfwGetJoystickAxes(GLFW_JOYSTICK_1, &axes_count);
|
||||
const unsigned char* buttons = glfwGetJoystickButtons(GLFW_JOYSTICK_1, &buttons_count);
|
||||
MAP_BUTTON(ImGuiNavInput_Activate, 0); // Cross / A
|
||||
MAP_BUTTON(ImGuiNavInput_Cancel, 1); // Circle / B
|
||||
MAP_BUTTON(ImGuiNavInput_Menu, 2); // Square / X
|
||||
MAP_BUTTON(ImGuiNavInput_Input, 3); // Triangle / Y
|
||||
MAP_BUTTON(ImGuiNavInput_DpadLeft, 13); // D-Pad Left
|
||||
MAP_BUTTON(ImGuiNavInput_DpadRight, 11); // D-Pad Right
|
||||
MAP_BUTTON(ImGuiNavInput_DpadUp, 10); // D-Pad Up
|
||||
MAP_BUTTON(ImGuiNavInput_DpadDown, 12); // D-Pad Down
|
||||
MAP_BUTTON(ImGuiNavInput_FocusPrev, 4); // L1 / LB
|
||||
MAP_BUTTON(ImGuiNavInput_FocusNext, 5); // R1 / RB
|
||||
MAP_BUTTON(ImGuiNavInput_TweakSlow, 4); // L1 / LB
|
||||
MAP_BUTTON(ImGuiNavInput_TweakFast, 5); // R1 / RB
|
||||
MAP_ANALOG(ImGuiNavInput_LStickLeft, 0, -0.3f, -0.9f);
|
||||
MAP_ANALOG(ImGuiNavInput_LStickRight,0, +0.3f, +0.9f);
|
||||
MAP_ANALOG(ImGuiNavInput_LStickUp, 1, +0.3f, +0.9f);
|
||||
MAP_ANALOG(ImGuiNavInput_LStickDown, 1, -0.3f, -0.9f);
|
||||
#undef MAP_BUTTON
|
||||
#undef MAP_ANALOG
|
||||
if (axes_count > 0 && buttons_count > 0)
|
||||
io.BackendFlags |= ImGuiBackendFlags_HasGamepad;
|
||||
else
|
||||
io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
|
||||
}
|
||||
|
||||
static void ImGui_ImplGlfw_UpdateMonitors()
|
||||
{
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
|
||||
int monitors_count = 0;
|
||||
GLFWmonitor** glfw_monitors = glfwGetMonitors(&monitors_count);
|
||||
platform_io.Monitors.resize(0);
|
||||
for (int n = 0; n < monitors_count; n++)
|
||||
{
|
||||
ImGuiPlatformMonitor monitor;
|
||||
int x, y;
|
||||
glfwGetMonitorPos(glfw_monitors[n], &x, &y);
|
||||
const GLFWvidmode* vid_mode = glfwGetVideoMode(glfw_monitors[n]);
|
||||
monitor.MainPos = monitor.WorkPos = ImVec2((float)x, (float)y);
|
||||
monitor.MainSize = monitor.WorkSize = ImVec2((float)vid_mode->width, (float)vid_mode->height);
|
||||
#if GLFW_HAS_MONITOR_WORK_AREA
|
||||
int w, h;
|
||||
glfwGetMonitorWorkarea(glfw_monitors[n], &x, &y, &w, &h);
|
||||
if (w > 0 && h > 0) // Workaround a small GLFW issue reporting zero on monitor changes: https://github.com/glfw/glfw/pull/1761
|
||||
{
|
||||
monitor.WorkPos = ImVec2((float)x, (float)y);
|
||||
monitor.WorkSize = ImVec2((float)w, (float)h);
|
||||
}
|
||||
#endif
|
||||
#if GLFW_HAS_PER_MONITOR_DPI
|
||||
// Warning: the validity of monitor DPI information on Windows depends on the application DPI awareness settings, which generally needs to be set in the manifest or at runtime.
|
||||
float x_scale, y_scale;
|
||||
glfwGetMonitorContentScale(glfw_monitors[n], &x_scale, &y_scale);
|
||||
monitor.DpiScale = x_scale;
|
||||
#endif
|
||||
platform_io.Monitors.push_back(monitor);
|
||||
}
|
||||
bd->WantUpdateMonitors = false;
|
||||
}
|
||||
|
||||
void ImGui_ImplGlfw_NewFrame()
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
IM_ASSERT(bd != NULL && "Did you call ImGui_ImplGlfw_InitForXXX()?");
|
||||
|
||||
// Setup display size (every frame to accommodate for window resizing)
|
||||
int w, h;
|
||||
int display_w, display_h;
|
||||
glfwGetWindowSize(bd->Window, &w, &h);
|
||||
glfwGetFramebufferSize(bd->Window, &display_w, &display_h);
|
||||
io.DisplaySize = ImVec2((float)w, (float)h);
|
||||
if (w > 0 && h > 0)
|
||||
io.DisplayFramebufferScale = ImVec2((float)display_w / w, (float)display_h / h);
|
||||
if (bd->WantUpdateMonitors)
|
||||
ImGui_ImplGlfw_UpdateMonitors();
|
||||
|
||||
// Setup time step
|
||||
double current_time = glfwGetTime();
|
||||
io.DeltaTime = bd->Time > 0.0 ? (float)(current_time - bd->Time) : (float)(1.0f / 60.0f);
|
||||
bd->Time = current_time;
|
||||
|
||||
ImGui_ImplGlfw_UpdateMousePosAndButtons();
|
||||
ImGui_ImplGlfw_UpdateMouseCursor();
|
||||
|
||||
// Update game controllers (if enabled and available)
|
||||
ImGui_ImplGlfw_UpdateGamepads();
|
||||
}
|
||||
|
||||
//--------------------------------------------------------------------------------------------------------
|
||||
// MULTI-VIEWPORT / PLATFORM INTERFACE SUPPORT
|
||||
// This is an _advanced_ and _optional_ feature, allowing the backend to create and handle multiple viewports simultaneously.
|
||||
// If you are new to dear imgui or creating a new binding for dear imgui, it is recommended that you completely ignore this section first..
|
||||
//--------------------------------------------------------------------------------------------------------
|
||||
|
||||
// Helper structure we store in the void* RenderUserData field of each ImGuiViewport to easily retrieve our backend data.
|
||||
struct ImGui_ImplGlfw_ViewportData
|
||||
{
|
||||
GLFWwindow* Window;
|
||||
bool WindowOwned;
|
||||
int IgnoreWindowPosEventFrame;
|
||||
int IgnoreWindowSizeEventFrame;
|
||||
|
||||
ImGui_ImplGlfw_ViewportData() { Window = NULL; WindowOwned = false; IgnoreWindowSizeEventFrame = IgnoreWindowPosEventFrame = -1; }
|
||||
~ImGui_ImplGlfw_ViewportData() { IM_ASSERT(Window == NULL); }
|
||||
};
|
||||
|
||||
static void ImGui_ImplGlfw_WindowCloseCallback(GLFWwindow* window)
|
||||
{
|
||||
if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle(window))
|
||||
viewport->PlatformRequestClose = true;
|
||||
}
|
||||
|
||||
// GLFW may dispatch window pos/size events after calling glfwSetWindowPos()/glfwSetWindowSize().
|
||||
// However: depending on the platform the callback may be invoked at different time:
|
||||
// - on Windows it appears to be called within the glfwSetWindowPos()/glfwSetWindowSize() call
|
||||
// - on Linux it is queued and invoked during glfwPollEvents()
|
||||
// Because the event doesn't always fire on glfwSetWindowXXX() we use a frame counter tag to only
|
||||
// ignore recent glfwSetWindowXXX() calls.
|
||||
static void ImGui_ImplGlfw_WindowPosCallback(GLFWwindow* window, int, int)
|
||||
{
|
||||
if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle(window))
|
||||
{
|
||||
if (ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData)
|
||||
{
|
||||
bool ignore_event = (ImGui::GetFrameCount() <= vd->IgnoreWindowPosEventFrame + 1);
|
||||
//data->IgnoreWindowPosEventFrame = -1;
|
||||
if (ignore_event)
|
||||
return;
|
||||
}
|
||||
viewport->PlatformRequestMove = true;
|
||||
}
|
||||
}
|
||||
|
||||
static void ImGui_ImplGlfw_WindowSizeCallback(GLFWwindow* window, int, int)
|
||||
{
|
||||
if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle(window))
|
||||
{
|
||||
if (ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData)
|
||||
{
|
||||
bool ignore_event = (ImGui::GetFrameCount() <= vd->IgnoreWindowSizeEventFrame + 1);
|
||||
//data->IgnoreWindowSizeEventFrame = -1;
|
||||
if (ignore_event)
|
||||
return;
|
||||
}
|
||||
viewport->PlatformRequestResize = true;
|
||||
}
|
||||
}
|
||||
|
||||
static void ImGui_ImplGlfw_CreateWindow(ImGuiViewport* viewport)
|
||||
{
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
ImGui_ImplGlfw_ViewportData* vd = IM_NEW(ImGui_ImplGlfw_ViewportData)();
|
||||
viewport->PlatformUserData = vd;
|
||||
|
||||
// GLFW 3.2 unfortunately always set focus on glfwCreateWindow() if GLFW_VISIBLE is set, regardless of GLFW_FOCUSED
|
||||
// With GLFW 3.3, the hint GLFW_FOCUS_ON_SHOW fixes this problem
|
||||
glfwWindowHint(GLFW_VISIBLE, false);
|
||||
glfwWindowHint(GLFW_FOCUSED, false);
|
||||
#if GLFW_HAS_FOCUS_ON_SHOW
|
||||
glfwWindowHint(GLFW_FOCUS_ON_SHOW, false);
|
||||
#endif
|
||||
glfwWindowHint(GLFW_DECORATED, (viewport->Flags & ImGuiViewportFlags_NoDecoration) ? false : true);
|
||||
#if GLFW_HAS_WINDOW_TOPMOST
|
||||
glfwWindowHint(GLFW_FLOATING, (viewport->Flags & ImGuiViewportFlags_TopMost) ? true : false);
|
||||
#endif
|
||||
GLFWwindow* share_window = (bd->ClientApi == GlfwClientApi_OpenGL) ? bd->Window : NULL;
|
||||
vd->Window = glfwCreateWindow((int)viewport->Size.x, (int)viewport->Size.y, "No Title Yet", NULL, share_window);
|
||||
vd->WindowOwned = true;
|
||||
viewport->PlatformHandle = (void*)vd->Window;
|
||||
#ifdef _WIN32
|
||||
viewport->PlatformHandleRaw = glfwGetWin32Window(vd->Window);
|
||||
#endif
|
||||
glfwSetWindowPos(vd->Window, (int)viewport->Pos.x, (int)viewport->Pos.y);
|
||||
|
||||
// Install GLFW callbacks for secondary viewports
|
||||
glfwSetWindowFocusCallback(vd->Window, ImGui_ImplGlfw_WindowFocusCallback);
|
||||
glfwSetCursorEnterCallback(vd->Window, ImGui_ImplGlfw_CursorEnterCallback);
|
||||
glfwSetMouseButtonCallback(vd->Window, ImGui_ImplGlfw_MouseButtonCallback);
|
||||
glfwSetScrollCallback(vd->Window, ImGui_ImplGlfw_ScrollCallback);
|
||||
glfwSetKeyCallback(vd->Window, ImGui_ImplGlfw_KeyCallback);
|
||||
glfwSetCharCallback(vd->Window, ImGui_ImplGlfw_CharCallback);
|
||||
glfwSetWindowCloseCallback(vd->Window, ImGui_ImplGlfw_WindowCloseCallback);
|
||||
glfwSetWindowPosCallback(vd->Window, ImGui_ImplGlfw_WindowPosCallback);
|
||||
glfwSetWindowSizeCallback(vd->Window, ImGui_ImplGlfw_WindowSizeCallback);
|
||||
if (bd->ClientApi == GlfwClientApi_OpenGL)
|
||||
{
|
||||
glfwMakeContextCurrent(vd->Window);
|
||||
glfwSwapInterval(0);
|
||||
}
|
||||
}
|
||||
|
||||
static void ImGui_ImplGlfw_DestroyWindow(ImGuiViewport* viewport)
|
||||
{
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
if (ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData)
|
||||
{
|
||||
if (vd->WindowOwned)
|
||||
{
|
||||
#if !GLFW_HAS_MOUSE_PASSTHROUGH && GLFW_HAS_WINDOW_HOVERED && defined(_WIN32)
|
||||
HWND hwnd = (HWND)viewport->PlatformHandleRaw;
|
||||
::RemovePropA(hwnd, "IMGUI_VIEWPORT");
|
||||
#endif
|
||||
|
||||
// Release any keys that were pressed in the window being destroyed and are still held down,
|
||||
// because we will not receive any release events after window is destroyed.
|
||||
for (int i = 0; i < IM_ARRAYSIZE(bd->KeyOwnerWindows); i++)
|
||||
if (bd->KeyOwnerWindows[i] == vd->Window)
|
||||
ImGui_ImplGlfw_KeyCallback(vd->Window, i, 0, GLFW_RELEASE, 0); // Later params are only used for main viewport, on which this function is never called.
|
||||
|
||||
glfwDestroyWindow(vd->Window);
|
||||
}
|
||||
vd->Window = NULL;
|
||||
IM_DELETE(vd);
|
||||
}
|
||||
viewport->PlatformUserData = viewport->PlatformHandle = NULL;
|
||||
}
|
||||
|
||||
// We have submitted https://github.com/glfw/glfw/pull/1568 to allow GLFW to support "transparent inputs".
|
||||
// In the meanwhile we implement custom per-platform workarounds here (FIXME-VIEWPORT: Implement same work-around for Linux/OSX!)
|
||||
#if !GLFW_HAS_MOUSE_PASSTHROUGH && GLFW_HAS_WINDOW_HOVERED && defined(_WIN32)
|
||||
static WNDPROC g_GlfwWndProc = NULL;
|
||||
static LRESULT CALLBACK WndProcNoInputs(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
|
||||
{
|
||||
if (msg == WM_NCHITTEST)
|
||||
{
|
||||
// Let mouse pass-through the window. This will allow the backend to set io.MouseHoveredViewport properly (which is OPTIONAL).
|
||||
// The ImGuiViewportFlags_NoInputs flag is set while dragging a viewport, as want to detect the window behind the one we are dragging.
|
||||
// If you cannot easily access those viewport flags from your windowing/event code: you may manually synchronize its state e.g. in
|
||||
// your main loop after calling UpdatePlatformWindows(). Iterate all viewports/platform windows and pass the flag to your windowing system.
|
||||
ImGuiViewport* viewport = (ImGuiViewport*)::GetPropA(hWnd, "IMGUI_VIEWPORT");
|
||||
if (viewport->Flags & ImGuiViewportFlags_NoInputs)
|
||||
return HTTRANSPARENT;
|
||||
}
|
||||
return ::CallWindowProc(g_GlfwWndProc, hWnd, msg, wParam, lParam);
|
||||
}
|
||||
#endif
|
||||
|
||||
static void ImGui_ImplGlfw_ShowWindow(ImGuiViewport* viewport)
|
||||
{
|
||||
ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData;
|
||||
|
||||
#if defined(_WIN32)
|
||||
// GLFW hack: Hide icon from task bar
|
||||
HWND hwnd = (HWND)viewport->PlatformHandleRaw;
|
||||
if (viewport->Flags & ImGuiViewportFlags_NoTaskBarIcon)
|
||||
{
|
||||
LONG ex_style = ::GetWindowLong(hwnd, GWL_EXSTYLE);
|
||||
ex_style &= ~WS_EX_APPWINDOW;
|
||||
ex_style |= WS_EX_TOOLWINDOW;
|
||||
::SetWindowLong(hwnd, GWL_EXSTYLE, ex_style);
|
||||
}
|
||||
|
||||
// GLFW hack: install hook for WM_NCHITTEST message handler
|
||||
#if !GLFW_HAS_MOUSE_PASSTHROUGH && GLFW_HAS_WINDOW_HOVERED && defined(_WIN32)
|
||||
::SetPropA(hwnd, "IMGUI_VIEWPORT", viewport);
|
||||
if (g_GlfwWndProc == NULL)
|
||||
g_GlfwWndProc = (WNDPROC)::GetWindowLongPtr(hwnd, GWLP_WNDPROC);
|
||||
::SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR)WndProcNoInputs);
|
||||
#endif
|
||||
|
||||
#if !GLFW_HAS_FOCUS_ON_SHOW
|
||||
// GLFW hack: GLFW 3.2 has a bug where glfwShowWindow() also activates/focus the window.
|
||||
// The fix was pushed to GLFW repository on 2018/01/09 and should be included in GLFW 3.3 via a GLFW_FOCUS_ON_SHOW window attribute.
|
||||
// See https://github.com/glfw/glfw/issues/1189
|
||||
// FIXME-VIEWPORT: Implement same work-around for Linux/OSX in the meanwhile.
|
||||
if (viewport->Flags & ImGuiViewportFlags_NoFocusOnAppearing)
|
||||
{
|
||||
::ShowWindow(hwnd, SW_SHOWNA);
|
||||
return;
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
|
||||
glfwShowWindow(vd->Window);
|
||||
}
|
||||
|
||||
static ImVec2 ImGui_ImplGlfw_GetWindowPos(ImGuiViewport* viewport)
|
||||
{
|
||||
ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData;
|
||||
int x = 0, y = 0;
|
||||
glfwGetWindowPos(vd->Window, &x, &y);
|
||||
return ImVec2((float)x, (float)y);
|
||||
}
|
||||
|
||||
static void ImGui_ImplGlfw_SetWindowPos(ImGuiViewport* viewport, ImVec2 pos)
|
||||
{
|
||||
ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData;
|
||||
vd->IgnoreWindowPosEventFrame = ImGui::GetFrameCount();
|
||||
glfwSetWindowPos(vd->Window, (int)pos.x, (int)pos.y);
|
||||
}
|
||||
|
||||
static ImVec2 ImGui_ImplGlfw_GetWindowSize(ImGuiViewport* viewport)
|
||||
{
|
||||
ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData;
|
||||
int w = 0, h = 0;
|
||||
glfwGetWindowSize(vd->Window, &w, &h);
|
||||
return ImVec2((float)w, (float)h);
|
||||
}
|
||||
|
||||
static void ImGui_ImplGlfw_SetWindowSize(ImGuiViewport* viewport, ImVec2 size)
|
||||
{
|
||||
ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData;
|
||||
#if __APPLE__ && !GLFW_HAS_OSX_WINDOW_POS_FIX
|
||||
// Native OS windows are positioned from the bottom-left corner on macOS, whereas on other platforms they are
|
||||
// positioned from the upper-left corner. GLFW makes an effort to convert macOS style coordinates, however it
|
||||
// doesn't handle it when changing size. We are manually moving the window in order for changes of size to be based
|
||||
// on the upper-left corner.
|
||||
int x, y, width, height;
|
||||
glfwGetWindowPos(vd->Window, &x, &y);
|
||||
glfwGetWindowSize(vd->Window, &width, &height);
|
||||
glfwSetWindowPos(vd->Window, x, y - height + size.y);
|
||||
#endif
|
||||
vd->IgnoreWindowSizeEventFrame = ImGui::GetFrameCount();
|
||||
glfwSetWindowSize(vd->Window, (int)size.x, (int)size.y);
|
||||
}
|
||||
|
||||
static void ImGui_ImplGlfw_SetWindowTitle(ImGuiViewport* viewport, const char* title)
|
||||
{
|
||||
ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData;
|
||||
glfwSetWindowTitle(vd->Window, title);
|
||||
}
|
||||
|
||||
static void ImGui_ImplGlfw_SetWindowFocus(ImGuiViewport* viewport)
|
||||
{
|
||||
#if GLFW_HAS_FOCUS_WINDOW
|
||||
ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData;
|
||||
glfwFocusWindow(vd->Window);
|
||||
#else
|
||||
// FIXME: What are the effect of not having this function? At the moment imgui doesn't actually call SetWindowFocus - we set that up ahead, will answer that question later.
|
||||
(void)viewport;
|
||||
#endif
|
||||
}
|
||||
|
||||
static bool ImGui_ImplGlfw_GetWindowFocus(ImGuiViewport* viewport)
|
||||
{
|
||||
ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData;
|
||||
return glfwGetWindowAttrib(vd->Window, GLFW_FOCUSED) != 0;
|
||||
}
|
||||
|
||||
static bool ImGui_ImplGlfw_GetWindowMinimized(ImGuiViewport* viewport)
|
||||
{
|
||||
ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData;
|
||||
return glfwGetWindowAttrib(vd->Window, GLFW_ICONIFIED) != 0;
|
||||
}
|
||||
|
||||
#if GLFW_HAS_WINDOW_ALPHA
|
||||
static void ImGui_ImplGlfw_SetWindowAlpha(ImGuiViewport* viewport, float alpha)
|
||||
{
|
||||
ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData;
|
||||
glfwSetWindowOpacity(vd->Window, alpha);
|
||||
}
|
||||
#endif
|
||||
|
||||
static void ImGui_ImplGlfw_RenderWindow(ImGuiViewport* viewport, void*)
|
||||
{
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData;
|
||||
if (bd->ClientApi == GlfwClientApi_OpenGL)
|
||||
glfwMakeContextCurrent(vd->Window);
|
||||
}
|
||||
|
||||
static void ImGui_ImplGlfw_SwapBuffers(ImGuiViewport* viewport, void*)
|
||||
{
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData;
|
||||
if (bd->ClientApi == GlfwClientApi_OpenGL)
|
||||
{
|
||||
glfwMakeContextCurrent(vd->Window);
|
||||
glfwSwapBuffers(vd->Window);
|
||||
}
|
||||
}
|
||||
|
||||
//--------------------------------------------------------------------------------------------------------
|
||||
// IME (Input Method Editor) basic support for e.g. Asian language users
|
||||
//--------------------------------------------------------------------------------------------------------
|
||||
|
||||
// We provide a Win32 implementation because this is such a common issue for IME users
|
||||
#if defined(_WIN32) && !defined(IMGUI_DISABLE_WIN32_FUNCTIONS) && !defined(IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS)
|
||||
#define HAS_WIN32_IME 1
|
||||
#include <imm.h>
|
||||
#ifdef _MSC_VER
|
||||
#pragma comment(lib, "imm32")
|
||||
#endif
|
||||
static void ImGui_ImplWin32_SetImeInputPos(ImGuiViewport* viewport, ImVec2 pos)
|
||||
{
|
||||
COMPOSITIONFORM cf = { CFS_FORCE_POSITION, { (LONG)(pos.x - viewport->Pos.x), (LONG)(pos.y - viewport->Pos.y) }, { 0, 0, 0, 0 } };
|
||||
if (HWND hwnd = (HWND)viewport->PlatformHandleRaw)
|
||||
if (HIMC himc = ::ImmGetContext(hwnd))
|
||||
{
|
||||
::ImmSetCompositionWindow(himc, &cf);
|
||||
::ImmReleaseContext(hwnd, himc);
|
||||
}
|
||||
}
|
||||
#else
|
||||
#define HAS_WIN32_IME 0
|
||||
#endif
|
||||
|
||||
//--------------------------------------------------------------------------------------------------------
|
||||
// Vulkan support (the Vulkan renderer needs to call a platform-side support function to create the surface)
|
||||
//--------------------------------------------------------------------------------------------------------
|
||||
|
||||
// Avoid including <vulkan.h> so we can build without it
|
||||
#if GLFW_HAS_VULKAN
|
||||
#ifndef VULKAN_H_
|
||||
#define VK_DEFINE_HANDLE(object) typedef struct object##_T* object;
|
||||
#if defined(__LP64__) || defined(_WIN64) || defined(__x86_64__) || defined(_M_X64) || defined(__ia64) || defined (_M_IA64) || defined(__aarch64__) || defined(__powerpc64__)
|
||||
#define VK_DEFINE_NON_DISPATCHABLE_HANDLE(object) typedef struct object##_T *object;
|
||||
#else
|
||||
#define VK_DEFINE_NON_DISPATCHABLE_HANDLE(object) typedef uint64_t object;
|
||||
#endif
|
||||
VK_DEFINE_HANDLE(VkInstance)
|
||||
VK_DEFINE_NON_DISPATCHABLE_HANDLE(VkSurfaceKHR)
|
||||
struct VkAllocationCallbacks;
|
||||
enum VkResult { VK_RESULT_MAX_ENUM = 0x7FFFFFFF };
|
||||
#endif // VULKAN_H_
|
||||
extern "C" { extern GLFWAPI VkResult glfwCreateWindowSurface(VkInstance instance, GLFWwindow* window, const VkAllocationCallbacks* allocator, VkSurfaceKHR* surface); }
|
||||
static int ImGui_ImplGlfw_CreateVkSurface(ImGuiViewport* viewport, ImU64 vk_instance, const void* vk_allocator, ImU64* out_vk_surface)
|
||||
{
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData;
|
||||
IM_UNUSED(bd);
|
||||
IM_ASSERT(bd->ClientApi == GlfwClientApi_Vulkan);
|
||||
VkResult err = glfwCreateWindowSurface((VkInstance)vk_instance, vd->Window, (const VkAllocationCallbacks*)vk_allocator, (VkSurfaceKHR*)out_vk_surface);
|
||||
return (int)err;
|
||||
}
|
||||
#endif // GLFW_HAS_VULKAN
|
||||
|
||||
static void ImGui_ImplGlfw_InitPlatformInterface()
|
||||
{
|
||||
// Register platform interface (will be coupled with a renderer interface)
|
||||
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
|
||||
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
|
||||
platform_io.Platform_CreateWindow = ImGui_ImplGlfw_CreateWindow;
|
||||
platform_io.Platform_DestroyWindow = ImGui_ImplGlfw_DestroyWindow;
|
||||
platform_io.Platform_ShowWindow = ImGui_ImplGlfw_ShowWindow;
|
||||
platform_io.Platform_SetWindowPos = ImGui_ImplGlfw_SetWindowPos;
|
||||
platform_io.Platform_GetWindowPos = ImGui_ImplGlfw_GetWindowPos;
|
||||
platform_io.Platform_SetWindowSize = ImGui_ImplGlfw_SetWindowSize;
|
||||
platform_io.Platform_GetWindowSize = ImGui_ImplGlfw_GetWindowSize;
|
||||
platform_io.Platform_SetWindowFocus = ImGui_ImplGlfw_SetWindowFocus;
|
||||
platform_io.Platform_GetWindowFocus = ImGui_ImplGlfw_GetWindowFocus;
|
||||
platform_io.Platform_GetWindowMinimized = ImGui_ImplGlfw_GetWindowMinimized;
|
||||
platform_io.Platform_SetWindowTitle = ImGui_ImplGlfw_SetWindowTitle;
|
||||
platform_io.Platform_RenderWindow = ImGui_ImplGlfw_RenderWindow;
|
||||
platform_io.Platform_SwapBuffers = ImGui_ImplGlfw_SwapBuffers;
|
||||
#if GLFW_HAS_WINDOW_ALPHA
|
||||
platform_io.Platform_SetWindowAlpha = ImGui_ImplGlfw_SetWindowAlpha;
|
||||
#endif
|
||||
#if GLFW_HAS_VULKAN
|
||||
platform_io.Platform_CreateVkSurface = ImGui_ImplGlfw_CreateVkSurface;
|
||||
#endif
|
||||
#if HAS_WIN32_IME
|
||||
platform_io.Platform_SetImeInputPos = ImGui_ImplWin32_SetImeInputPos;
|
||||
#endif
|
||||
|
||||
// Register main window handle (which is owned by the main application, not by us)
|
||||
// This is mostly for simplicity and consistency, so that our code (e.g. mouse handling etc.) can use same logic for main and secondary viewports.
|
||||
ImGuiViewport* main_viewport = ImGui::GetMainViewport();
|
||||
ImGui_ImplGlfw_ViewportData* vd = IM_NEW(ImGui_ImplGlfw_ViewportData)();
|
||||
vd->Window = bd->Window;
|
||||
vd->WindowOwned = false;
|
||||
main_viewport->PlatformUserData = vd;
|
||||
main_viewport->PlatformHandle = (void*)bd->Window;
|
||||
}
|
||||
|
||||
static void ImGui_ImplGlfw_ShutdownPlatformInterface()
|
||||
{
|
||||
}
|
||||
816
lib/external/imgui/source/imgui_impl_opengl3.cpp
vendored
Normal file
816
lib/external/imgui/source/imgui_impl_opengl3.cpp
vendored
Normal file
@@ -0,0 +1,816 @@
|
||||
// dear imgui: Renderer Backend for modern OpenGL with shaders / programmatic pipeline
|
||||
// - Desktop GL: 2.x 3.x 4.x
|
||||
// - Embedded GL: ES 2.0 (WebGL 1.0), ES 3.0 (WebGL 2.0)
|
||||
// This needs to be used along with a Platform Backend (e.g. GLFW, SDL, Win32, custom..)
|
||||
|
||||
// Implemented features:
|
||||
// [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID!
|
||||
// [X] Renderer: Multi-viewport support. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable'.
|
||||
// [x] Renderer: Desktop GL only: Support for large meshes (64k+ vertices) with 16-bit indices.
|
||||
|
||||
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
|
||||
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
|
||||
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
|
||||
// Read online: https://github.com/ocornut/imgui/tree/master/docs
|
||||
|
||||
// CHANGELOG
|
||||
// (minor and older changes stripped away, please see git history for details)
|
||||
// 2021-XX-XX: Platform: Added support for multiple windows via the ImGuiPlatformIO interface.
|
||||
// 2021-08-19: OpenGL: Embed and use our own minimal GL loader (imgui_impl_opengl3_loader.h), removing requirement and support for third-party loader.
|
||||
// 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
|
||||
// 2021-06-25: OpenGL: Use OES_vertex_array extension on Emscripten + backup/restore current state.
|
||||
// 2021-06-21: OpenGL: Destroy individual vertex/fragment shader objects right after they are linked into the main shader.
|
||||
// 2021-05-24: OpenGL: Access GL_CLIP_ORIGIN when "GL_ARB_clip_control" extension is detected, inside of just OpenGL 4.5 version.
|
||||
// 2021-05-19: OpenGL: Replaced direct access to ImDrawCmd::TextureId with a call to ImDrawCmd::GetTexID(). (will become a requirement)
|
||||
// 2021-04-06: OpenGL: Don't try to read GL_CLIP_ORIGIN unless we're OpenGL 4.5 or greater.
|
||||
// 2021-02-18: OpenGL: Change blending equation to preserve alpha in output buffer.
|
||||
// 2021-01-03: OpenGL: Backup, setup and restore GL_STENCIL_TEST state.
|
||||
// 2020-10-23: OpenGL: Backup, setup and restore GL_PRIMITIVE_RESTART state.
|
||||
// 2020-10-15: OpenGL: Use glGetString(GL_VERSION) instead of glGetIntegerv(GL_MAJOR_VERSION, ...) when the later returns zero (e.g. Desktop GL 2.x)
|
||||
// 2020-09-17: OpenGL: Fix to avoid compiling/calling glBindSampler() on ES or pre 3.3 context which have the defines set by a loader.
|
||||
// 2020-07-10: OpenGL: Added support for glad2 OpenGL loader.
|
||||
// 2020-05-08: OpenGL: Made default GLSL version 150 (instead of 130) on OSX.
|
||||
// 2020-04-21: OpenGL: Fixed handling of glClipControl(GL_UPPER_LEFT) by inverting projection matrix.
|
||||
// 2020-04-12: OpenGL: Fixed context version check mistakenly testing for 4.0+ instead of 3.2+ to enable ImGuiBackendFlags_RendererHasVtxOffset.
|
||||
// 2020-03-24: OpenGL: Added support for glbinding 2.x OpenGL loader.
|
||||
// 2020-01-07: OpenGL: Added support for glbinding 3.x OpenGL loader.
|
||||
// 2019-10-25: OpenGL: Using a combination of GL define and runtime GL version to decide whether to use glDrawElementsBaseVertex(). Fix building with pre-3.2 GL loaders.
|
||||
// 2019-09-22: OpenGL: Detect default GL loader using __has_include compiler facility.
|
||||
// 2019-09-16: OpenGL: Tweak initialization code to allow application calling ImGui_ImplOpenGL3_CreateFontsTexture() before the first NewFrame() call.
|
||||
// 2019-05-29: OpenGL: Desktop GL only: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
|
||||
// 2019-04-30: OpenGL: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
|
||||
// 2019-03-29: OpenGL: Not calling glBindBuffer more than necessary in the render loop.
|
||||
// 2019-03-15: OpenGL: Added a GL call + comments in ImGui_ImplOpenGL3_Init() to detect uninitialized GL function loaders early.
|
||||
// 2019-03-03: OpenGL: Fix support for ES 2.0 (WebGL 1.0).
|
||||
// 2019-02-20: OpenGL: Fix for OSX not supporting OpenGL 4.5, we don't try to read GL_CLIP_ORIGIN even if defined by the headers/loader.
|
||||
// 2019-02-11: OpenGL: Projecting clipping rectangles correctly using draw_data->FramebufferScale to allow multi-viewports for retina display.
|
||||
// 2019-02-01: OpenGL: Using GLSL 410 shaders for any version over 410 (e.g. 430, 450).
|
||||
// 2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
|
||||
// 2018-11-13: OpenGL: Support for GL 4.5's glClipControl(GL_UPPER_LEFT) / GL_CLIP_ORIGIN.
|
||||
// 2018-08-29: OpenGL: Added support for more OpenGL loaders: glew and glad, with comments indicative that any loader can be used.
|
||||
// 2018-08-09: OpenGL: Default to OpenGL ES 3 on iOS and Android. GLSL version default to "#version 300 ES".
|
||||
// 2018-07-30: OpenGL: Support for GLSL 300 ES and 410 core. Fixes for Emscripten compilation.
|
||||
// 2018-07-10: OpenGL: Support for more GLSL versions (based on the GLSL version string). Added error output when shaders fail to compile/link.
|
||||
// 2018-06-08: Misc: Extracted imgui_impl_opengl3.cpp/.h away from the old combined GLFW/SDL+OpenGL3 examples.
|
||||
// 2018-06-08: OpenGL: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
|
||||
// 2018-05-25: OpenGL: Removed unnecessary backup/restore of GL_ELEMENT_ARRAY_BUFFER_BINDING since this is part of the VAO state.
|
||||
// 2018-05-14: OpenGL: Making the call to glBindSampler() optional so 3.2 context won't fail if the function is a NULL pointer.
|
||||
// 2018-03-06: OpenGL: Added const char* glsl_version parameter to ImGui_ImplOpenGL3_Init() so user can override the GLSL version e.g. "#version 150".
|
||||
// 2018-02-23: OpenGL: Create the VAO in the render function so the setup can more easily be used with multiple shared GL context.
|
||||
// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplSdlGL3_RenderDrawData() in the .h file so you can call it yourself.
|
||||
// 2018-01-07: OpenGL: Changed GLSL shader version from 330 to 150.
|
||||
// 2017-09-01: OpenGL: Save and restore current bound sampler. Save and restore current polygon mode.
|
||||
// 2017-05-01: OpenGL: Fixed save and restore of current blend func state.
|
||||
// 2017-05-01: OpenGL: Fixed save and restore of current GL_ACTIVE_TEXTURE.
|
||||
// 2016-09-05: OpenGL: Fixed save and restore of current scissor rectangle.
|
||||
// 2016-07-29: OpenGL: Explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
|
||||
|
||||
//----------------------------------------
|
||||
// OpenGL GLSL GLSL
|
||||
// version version string
|
||||
//----------------------------------------
|
||||
// 2.0 110 "#version 110"
|
||||
// 2.1 120 "#version 120"
|
||||
// 3.0 130 "#version 130"
|
||||
// 3.1 140 "#version 140"
|
||||
// 3.2 150 "#version 150"
|
||||
// 3.3 330 "#version 330 core"
|
||||
// 4.0 400 "#version 400 core"
|
||||
// 4.1 410 "#version 410 core"
|
||||
// 4.2 420 "#version 410 core"
|
||||
// 4.3 430 "#version 430 core"
|
||||
// ES 2.0 100 "#version 100" = WebGL 1.0
|
||||
// ES 3.0 300 "#version 300 es" = WebGL 2.0
|
||||
//----------------------------------------
|
||||
|
||||
#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
|
||||
#define _CRT_SECURE_NO_WARNINGS
|
||||
#endif
|
||||
|
||||
#include "imgui.h"
|
||||
#include "imgui_impl_opengl3.h"
|
||||
#include <stdio.h>
|
||||
#if defined(_MSC_VER) && _MSC_VER <= 1500 // MSVC 2008 or earlier
|
||||
#include <stddef.h> // intptr_t
|
||||
#else
|
||||
#include <stdint.h> // intptr_t
|
||||
#endif
|
||||
|
||||
// GL includes
|
||||
#if defined(IMGUI_IMPL_OPENGL_ES2)
|
||||
#include <GLES2/gl2.h>
|
||||
#if defined(__EMSCRIPTEN__)
|
||||
#ifndef GL_GLEXT_PROTOTYPES
|
||||
#define GL_GLEXT_PROTOTYPES
|
||||
#endif
|
||||
#include <GLES2/gl2ext.h>
|
||||
#endif
|
||||
#elif defined(IMGUI_IMPL_OPENGL_ES3)
|
||||
#if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV))
|
||||
#include <OpenGLES/ES3/gl.h> // Use GL ES 3
|
||||
#else
|
||||
#include <GLES3/gl3.h> // Use GL ES 3
|
||||
#endif
|
||||
#elif !defined(IMGUI_IMPL_OPENGL_LOADER_CUSTOM)
|
||||
// Modern desktop OpenGL doesn't have a standard portable header file to load OpenGL function pointers.
|
||||
// Helper libraries are often used for this purpose! Here we are using our own minimal custom loader based on gl3w.
|
||||
// In the rest of your app/engine, you can use another loader of your choice (gl3w, glew, glad, glbinding, glext, glLoadGen, etc.).
|
||||
// If you happen to be developing a new feature for this backend (imgui_impl_opengl3.cpp):
|
||||
// - You may need to regenerate imgui_impl_opengl3_loader.h to add new symbols. See https://github.com/dearimgui/gl3w_stripped
|
||||
// - You can temporarily use an unstripped version. See https://github.com/dearimgui/gl3w_stripped/releases
|
||||
// Changes to this backend using new APIs should be accompanied by a regenerated stripped loader version.
|
||||
#define IMGL3W_IMPL
|
||||
#include "imgui_impl_opengl3_loader.h"
|
||||
#endif
|
||||
|
||||
// Vertex arrays are not supported on ES2/WebGL1 unless Emscripten which uses an extension
|
||||
#ifndef IMGUI_IMPL_OPENGL_ES2
|
||||
#define IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
#elif defined(__EMSCRIPTEN__)
|
||||
#define IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
#define glBindVertexArray glBindVertexArrayOES
|
||||
#define glGenVertexArrays glGenVertexArraysOES
|
||||
#define glDeleteVertexArrays glDeleteVertexArraysOES
|
||||
#define GL_VERTEX_ARRAY_BINDING GL_VERTEX_ARRAY_BINDING_OES
|
||||
#endif
|
||||
|
||||
// Desktop GL 2.0+ has glPolygonMode() which GL ES and WebGL don't have.
|
||||
#ifdef GL_POLYGON_MODE
|
||||
#define IMGUI_IMPL_HAS_POLYGON_MODE
|
||||
#endif
|
||||
|
||||
// Desktop GL 3.2+ has glDrawElementsBaseVertex() which GL ES and WebGL don't have.
|
||||
#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && defined(GL_VERSION_3_2)
|
||||
#define IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
|
||||
#endif
|
||||
|
||||
// Desktop GL 3.3+ has glBindSampler()
|
||||
#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && defined(GL_VERSION_3_3)
|
||||
#define IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
|
||||
#endif
|
||||
|
||||
// Desktop GL 3.1+ has GL_PRIMITIVE_RESTART state
|
||||
#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && defined(GL_VERSION_3_1)
|
||||
#define IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART
|
||||
#endif
|
||||
|
||||
// Desktop GL use extension detection
|
||||
#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3)
|
||||
#define IMGUI_IMPL_OPENGL_MAY_HAVE_EXTENSIONS
|
||||
#endif
|
||||
|
||||
// OpenGL Data
|
||||
struct ImGui_ImplOpenGL3_Data
|
||||
{
|
||||
GLuint GlVersion; // Extracted at runtime using GL_MAJOR_VERSION, GL_MINOR_VERSION queries (e.g. 320 for GL 3.2)
|
||||
char GlslVersionString[32]; // Specified by user or detected based on compile time GL settings.
|
||||
GLuint FontTexture;
|
||||
GLuint ShaderHandle;
|
||||
GLint AttribLocationTex; // Uniforms location
|
||||
GLint AttribLocationProjMtx;
|
||||
GLuint AttribLocationVtxPos; // Vertex attributes location
|
||||
GLuint AttribLocationVtxUV;
|
||||
GLuint AttribLocationVtxColor;
|
||||
unsigned int VboHandle, ElementsHandle;
|
||||
bool HasClipOrigin;
|
||||
|
||||
ImGui_ImplOpenGL3_Data() { memset(this, 0, sizeof(*this)); }
|
||||
};
|
||||
|
||||
// Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts
|
||||
// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
|
||||
static ImGui_ImplOpenGL3_Data* ImGui_ImplOpenGL3_GetBackendData()
|
||||
{
|
||||
return ImGui::GetCurrentContext() ? (ImGui_ImplOpenGL3_Data*)ImGui::GetIO().BackendRendererUserData : NULL;
|
||||
}
|
||||
|
||||
// Forward Declarations
|
||||
static void ImGui_ImplOpenGL3_InitPlatformInterface();
|
||||
static void ImGui_ImplOpenGL3_ShutdownPlatformInterface();
|
||||
|
||||
// Functions
|
||||
bool ImGui_ImplOpenGL3_Init(const char* glsl_version)
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
IM_ASSERT(io.BackendRendererUserData == NULL && "Already initialized a renderer backend!");
|
||||
|
||||
// Initialize our loader
|
||||
#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && !defined(IMGUI_IMPL_OPENGL_LOADER_CUSTOM)
|
||||
if (imgl3wInit() != 0)
|
||||
{
|
||||
fprintf(stderr, "Failed to initialize OpenGL loader!\n");
|
||||
return false;
|
||||
}
|
||||
#endif
|
||||
|
||||
// Setup backend capabilities flags
|
||||
ImGui_ImplOpenGL3_Data* bd = IM_NEW(ImGui_ImplOpenGL3_Data)();
|
||||
io.BackendRendererUserData = (void*)bd;
|
||||
io.BackendRendererName = "imgui_impl_opengl3";
|
||||
|
||||
// Query for GL version (e.g. 320 for GL 3.2)
|
||||
#if !defined(IMGUI_IMPL_OPENGL_ES2)
|
||||
GLint major = 0;
|
||||
GLint minor = 0;
|
||||
glGetIntegerv(GL_MAJOR_VERSION, &major);
|
||||
glGetIntegerv(GL_MINOR_VERSION, &minor);
|
||||
if (major == 0 && minor == 0)
|
||||
{
|
||||
// Query GL_VERSION in desktop GL 2.x, the string will start with "<major>.<minor>"
|
||||
const char* gl_version = (const char*)glGetString(GL_VERSION);
|
||||
sscanf(gl_version, "%d.%d", &major, &minor);
|
||||
}
|
||||
bd->GlVersion = (GLuint)(major * 100 + minor * 10);
|
||||
#else
|
||||
bd->GlVersion = 200; // GLES 2
|
||||
#endif
|
||||
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
|
||||
if (bd->GlVersion >= 320)
|
||||
io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
|
||||
#endif
|
||||
io.BackendFlags |= ImGuiBackendFlags_RendererHasViewports; // We can create multi-viewports on the Renderer side (optional)
|
||||
|
||||
// Store GLSL version string so we can refer to it later in case we recreate shaders.
|
||||
// Note: GLSL version is NOT the same as GL version. Leave this to NULL if unsure.
|
||||
if (glsl_version == NULL)
|
||||
{
|
||||
#if defined(IMGUI_IMPL_OPENGL_ES2)
|
||||
glsl_version = "#version 100";
|
||||
#elif defined(IMGUI_IMPL_OPENGL_ES3)
|
||||
glsl_version = "#version 300 es";
|
||||
#elif defined(__APPLE__)
|
||||
glsl_version = "#version 150";
|
||||
#else
|
||||
glsl_version = "#version 130";
|
||||
#endif
|
||||
}
|
||||
IM_ASSERT((int)strlen(glsl_version) + 2 < IM_ARRAYSIZE(bd->GlslVersionString));
|
||||
strcpy(bd->GlslVersionString, glsl_version);
|
||||
strcat(bd->GlslVersionString, "\n");
|
||||
|
||||
// Make an arbitrary GL call (we don't actually need the result)
|
||||
// IF YOU GET A CRASH HERE: it probably means the OpenGL function loader didn't do its job. Let us know!
|
||||
GLint current_texture;
|
||||
glGetIntegerv(GL_TEXTURE_BINDING_2D, ¤t_texture);
|
||||
|
||||
// Detect extensions we support
|
||||
bd->HasClipOrigin = (bd->GlVersion >= 450);
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_EXTENSIONS
|
||||
GLint num_extensions = 0;
|
||||
glGetIntegerv(GL_NUM_EXTENSIONS, &num_extensions);
|
||||
for (GLint i = 0; i < num_extensions; i++)
|
||||
{
|
||||
const char* extension = (const char*)glGetStringi(GL_EXTENSIONS, i);
|
||||
if (extension != NULL && strcmp(extension, "GL_ARB_clip_control") == 0)
|
||||
bd->HasClipOrigin = true;
|
||||
}
|
||||
#endif
|
||||
|
||||
if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
|
||||
ImGui_ImplOpenGL3_InitPlatformInterface();
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void ImGui_ImplOpenGL3_Shutdown()
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
|
||||
ImGui_ImplOpenGL3_ShutdownPlatformInterface();
|
||||
ImGui_ImplOpenGL3_DestroyDeviceObjects();
|
||||
io.BackendRendererName = NULL;
|
||||
io.BackendRendererUserData = NULL;
|
||||
IM_DELETE(bd);
|
||||
}
|
||||
|
||||
void ImGui_ImplOpenGL3_NewFrame()
|
||||
{
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
IM_ASSERT(bd != NULL && "Did you call ImGui_ImplOpenGL3_Init()?");
|
||||
|
||||
if (!bd->ShaderHandle)
|
||||
ImGui_ImplOpenGL3_CreateDeviceObjects();
|
||||
}
|
||||
|
||||
static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_width, int fb_height, GLuint vertex_array_object)
|
||||
{
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
|
||||
// Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
|
||||
glEnable(GL_BLEND);
|
||||
glBlendEquation(GL_FUNC_ADD);
|
||||
glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
|
||||
glDisable(GL_CULL_FACE);
|
||||
glDisable(GL_DEPTH_TEST);
|
||||
glDisable(GL_STENCIL_TEST);
|
||||
glEnable(GL_SCISSOR_TEST);
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART
|
||||
if (bd->GlVersion >= 310)
|
||||
glDisable(GL_PRIMITIVE_RESTART);
|
||||
#endif
|
||||
#ifdef IMGUI_IMPL_HAS_POLYGON_MODE
|
||||
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
|
||||
#endif
|
||||
|
||||
// Support for GL 4.5 rarely used glClipControl(GL_UPPER_LEFT)
|
||||
#if defined(GL_CLIP_ORIGIN)
|
||||
bool clip_origin_lower_left = true;
|
||||
if (bd->HasClipOrigin)
|
||||
{
|
||||
GLenum current_clip_origin = 0; glGetIntegerv(GL_CLIP_ORIGIN, (GLint*)¤t_clip_origin);
|
||||
if (current_clip_origin == GL_UPPER_LEFT)
|
||||
clip_origin_lower_left = false;
|
||||
}
|
||||
#endif
|
||||
|
||||
// Setup viewport, orthographic projection matrix
|
||||
// Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
|
||||
glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height);
|
||||
float L = draw_data->DisplayPos.x;
|
||||
float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x;
|
||||
float T = draw_data->DisplayPos.y;
|
||||
float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y;
|
||||
#if defined(GL_CLIP_ORIGIN)
|
||||
if (!clip_origin_lower_left) { float tmp = T; T = B; B = tmp; } // Swap top and bottom if origin is upper left
|
||||
#endif
|
||||
const float ortho_projection[4][4] =
|
||||
{
|
||||
{ 2.0f/(R-L), 0.0f, 0.0f, 0.0f },
|
||||
{ 0.0f, 2.0f/(T-B), 0.0f, 0.0f },
|
||||
{ 0.0f, 0.0f, -1.0f, 0.0f },
|
||||
{ (R+L)/(L-R), (T+B)/(B-T), 0.0f, 1.0f },
|
||||
};
|
||||
glUseProgram(bd->ShaderHandle);
|
||||
glUniform1i(bd->AttribLocationTex, 0);
|
||||
glUniformMatrix4fv(bd->AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
|
||||
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
|
||||
if (bd->GlVersion >= 330)
|
||||
glBindSampler(0, 0); // We use combined texture/sampler state. Applications using GL 3.3 may set that otherwise.
|
||||
#endif
|
||||
|
||||
(void)vertex_array_object;
|
||||
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
glBindVertexArray(vertex_array_object);
|
||||
#endif
|
||||
|
||||
// Bind vertex/index buffers and setup attributes for ImDrawVert
|
||||
glBindBuffer(GL_ARRAY_BUFFER, bd->VboHandle);
|
||||
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bd->ElementsHandle);
|
||||
glEnableVertexAttribArray(bd->AttribLocationVtxPos);
|
||||
glEnableVertexAttribArray(bd->AttribLocationVtxUV);
|
||||
glEnableVertexAttribArray(bd->AttribLocationVtxColor);
|
||||
glVertexAttribPointer(bd->AttribLocationVtxPos, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, pos));
|
||||
glVertexAttribPointer(bd->AttribLocationVtxUV, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, uv));
|
||||
glVertexAttribPointer(bd->AttribLocationVtxColor, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, col));
|
||||
}
|
||||
|
||||
// OpenGL3 Render function.
|
||||
// Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly.
|
||||
// This is in order to be able to run within an OpenGL engine that doesn't do so.
|
||||
void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
|
||||
{
|
||||
// Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
|
||||
int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
|
||||
int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
|
||||
if (fb_width <= 0 || fb_height <= 0)
|
||||
return;
|
||||
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
|
||||
// Backup GL state
|
||||
GLenum last_active_texture; glGetIntegerv(GL_ACTIVE_TEXTURE, (GLint*)&last_active_texture);
|
||||
glActiveTexture(GL_TEXTURE0);
|
||||
GLuint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, (GLint*)&last_program);
|
||||
GLuint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, (GLint*)&last_texture);
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
|
||||
GLuint last_sampler; if (bd->GlVersion >= 330) { glGetIntegerv(GL_SAMPLER_BINDING, (GLint*)&last_sampler); } else { last_sampler = 0; }
|
||||
#endif
|
||||
GLuint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, (GLint*)&last_array_buffer);
|
||||
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
GLuint last_vertex_array_object; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, (GLint*)&last_vertex_array_object);
|
||||
#endif
|
||||
#ifdef IMGUI_IMPL_HAS_POLYGON_MODE
|
||||
GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
|
||||
#endif
|
||||
GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
|
||||
GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box);
|
||||
GLenum last_blend_src_rgb; glGetIntegerv(GL_BLEND_SRC_RGB, (GLint*)&last_blend_src_rgb);
|
||||
GLenum last_blend_dst_rgb; glGetIntegerv(GL_BLEND_DST_RGB, (GLint*)&last_blend_dst_rgb);
|
||||
GLenum last_blend_src_alpha; glGetIntegerv(GL_BLEND_SRC_ALPHA, (GLint*)&last_blend_src_alpha);
|
||||
GLenum last_blend_dst_alpha; glGetIntegerv(GL_BLEND_DST_ALPHA, (GLint*)&last_blend_dst_alpha);
|
||||
GLenum last_blend_equation_rgb; glGetIntegerv(GL_BLEND_EQUATION_RGB, (GLint*)&last_blend_equation_rgb);
|
||||
GLenum last_blend_equation_alpha; glGetIntegerv(GL_BLEND_EQUATION_ALPHA, (GLint*)&last_blend_equation_alpha);
|
||||
GLboolean last_enable_blend = glIsEnabled(GL_BLEND);
|
||||
GLboolean last_enable_cull_face = glIsEnabled(GL_CULL_FACE);
|
||||
GLboolean last_enable_depth_test = glIsEnabled(GL_DEPTH_TEST);
|
||||
GLboolean last_enable_stencil_test = glIsEnabled(GL_STENCIL_TEST);
|
||||
GLboolean last_enable_scissor_test = glIsEnabled(GL_SCISSOR_TEST);
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART
|
||||
GLboolean last_enable_primitive_restart = (bd->GlVersion >= 310) ? glIsEnabled(GL_PRIMITIVE_RESTART) : GL_FALSE;
|
||||
#endif
|
||||
|
||||
// Setup desired GL state
|
||||
// Recreate the VAO every time (this is to easily allow multiple GL contexts to be rendered to. VAO are not shared among GL contexts)
|
||||
// The renderer would actually work without any VAO bound, but then our VertexAttrib calls would overwrite the default one currently bound.
|
||||
GLuint vertex_array_object = 0;
|
||||
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
glGenVertexArrays(1, &vertex_array_object);
|
||||
#endif
|
||||
ImGui_ImplOpenGL3_SetupRenderState(draw_data, fb_width, fb_height, vertex_array_object);
|
||||
|
||||
// Will project scissor/clipping rectangles into framebuffer space
|
||||
ImVec2 clip_off = draw_data->DisplayPos; // (0,0) unless using multi-viewports
|
||||
ImVec2 clip_scale = draw_data->FramebufferScale; // (1,1) unless using retina display which are often (2,2)
|
||||
|
||||
// Render command lists
|
||||
for (int n = 0; n < draw_data->CmdListsCount; n++)
|
||||
{
|
||||
const ImDrawList* cmd_list = draw_data->CmdLists[n];
|
||||
|
||||
// Upload vertex/index buffers
|
||||
glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)cmd_list->VtxBuffer.Size * (int)sizeof(ImDrawVert), (const GLvoid*)cmd_list->VtxBuffer.Data, GL_STREAM_DRAW);
|
||||
glBufferData(GL_ELEMENT_ARRAY_BUFFER, (GLsizeiptr)cmd_list->IdxBuffer.Size * (int)sizeof(ImDrawIdx), (const GLvoid*)cmd_list->IdxBuffer.Data, GL_STREAM_DRAW);
|
||||
|
||||
for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
|
||||
{
|
||||
const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
|
||||
if (pcmd->UserCallback != NULL)
|
||||
{
|
||||
// User callback, registered via ImDrawList::AddCallback()
|
||||
// (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
|
||||
if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
|
||||
ImGui_ImplOpenGL3_SetupRenderState(draw_data, fb_width, fb_height, vertex_array_object);
|
||||
else
|
||||
pcmd->UserCallback(cmd_list, pcmd);
|
||||
}
|
||||
else
|
||||
{
|
||||
// Project scissor/clipping rectangles into framebuffer space
|
||||
ImVec4 clip_rect;
|
||||
clip_rect.x = (pcmd->ClipRect.x - clip_off.x) * clip_scale.x;
|
||||
clip_rect.y = (pcmd->ClipRect.y - clip_off.y) * clip_scale.y;
|
||||
clip_rect.z = (pcmd->ClipRect.z - clip_off.x) * clip_scale.x;
|
||||
clip_rect.w = (pcmd->ClipRect.w - clip_off.y) * clip_scale.y;
|
||||
|
||||
if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0f && clip_rect.w >= 0.0f)
|
||||
{
|
||||
// Apply scissor/clipping rectangle
|
||||
glScissor((int)clip_rect.x, (int)(fb_height - clip_rect.w), (int)(clip_rect.z - clip_rect.x), (int)(clip_rect.w - clip_rect.y));
|
||||
|
||||
// Bind texture, Draw
|
||||
glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->GetTexID());
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
|
||||
if (bd->GlVersion >= 320)
|
||||
glDrawElementsBaseVertex(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)), (GLint)pcmd->VtxOffset);
|
||||
else
|
||||
#endif
|
||||
glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Destroy the temporary VAO
|
||||
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
glDeleteVertexArrays(1, &vertex_array_object);
|
||||
#endif
|
||||
|
||||
// Restore modified GL state
|
||||
glUseProgram(last_program);
|
||||
glBindTexture(GL_TEXTURE_2D, last_texture);
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
|
||||
if (bd->GlVersion >= 330)
|
||||
glBindSampler(0, last_sampler);
|
||||
#endif
|
||||
glActiveTexture(last_active_texture);
|
||||
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
glBindVertexArray(last_vertex_array_object);
|
||||
#endif
|
||||
glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
|
||||
glBlendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
|
||||
glBlendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
|
||||
if (last_enable_blend) glEnable(GL_BLEND); else glDisable(GL_BLEND);
|
||||
if (last_enable_cull_face) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE);
|
||||
if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
|
||||
if (last_enable_stencil_test) glEnable(GL_STENCIL_TEST); else glDisable(GL_STENCIL_TEST);
|
||||
if (last_enable_scissor_test) glEnable(GL_SCISSOR_TEST); else glDisable(GL_SCISSOR_TEST);
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART
|
||||
if (bd->GlVersion >= 310) { if (last_enable_primitive_restart) glEnable(GL_PRIMITIVE_RESTART); else glDisable(GL_PRIMITIVE_RESTART); }
|
||||
#endif
|
||||
|
||||
#ifdef IMGUI_IMPL_HAS_POLYGON_MODE
|
||||
glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
|
||||
#endif
|
||||
glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
|
||||
glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]);
|
||||
(void)bd; // Not all compilation paths use this
|
||||
}
|
||||
|
||||
bool ImGui_ImplOpenGL3_CreateFontsTexture()
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
|
||||
// Build texture atlas
|
||||
unsigned char* pixels;
|
||||
int width, height;
|
||||
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); // Load as RGBA 32-bit (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
|
||||
|
||||
// Upload texture to graphics system
|
||||
GLint last_texture;
|
||||
glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
|
||||
glGenTextures(1, &bd->FontTexture);
|
||||
glBindTexture(GL_TEXTURE_2D, bd->FontTexture);
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
||||
#ifdef GL_UNPACK_ROW_LENGTH // Not on WebGL/ES
|
||||
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
|
||||
#endif
|
||||
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
|
||||
|
||||
// Store our identifier
|
||||
io.Fonts->SetTexID((ImTextureID)(intptr_t)bd->FontTexture);
|
||||
|
||||
// Restore state
|
||||
glBindTexture(GL_TEXTURE_2D, last_texture);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void ImGui_ImplOpenGL3_DestroyFontsTexture()
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
if (bd->FontTexture)
|
||||
{
|
||||
glDeleteTextures(1, &bd->FontTexture);
|
||||
io.Fonts->SetTexID(0);
|
||||
bd->FontTexture = 0;
|
||||
}
|
||||
}
|
||||
|
||||
// If you get an error please report on github. You may try different GL context version or GLSL version. See GL<>GLSL version table at the top of this file.
|
||||
static bool CheckShader(GLuint handle, const char* desc)
|
||||
{
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
GLint status = 0, log_length = 0;
|
||||
glGetShaderiv(handle, GL_COMPILE_STATUS, &status);
|
||||
glGetShaderiv(handle, GL_INFO_LOG_LENGTH, &log_length);
|
||||
if ((GLboolean)status == GL_FALSE)
|
||||
fprintf(stderr, "ERROR: ImGui_ImplOpenGL3_CreateDeviceObjects: failed to compile %s! With GLSL: %s\n", desc, bd->GlslVersionString);
|
||||
if (log_length > 1)
|
||||
{
|
||||
ImVector<char> buf;
|
||||
buf.resize((int)(log_length + 1));
|
||||
glGetShaderInfoLog(handle, log_length, NULL, (GLchar*)buf.begin());
|
||||
fprintf(stderr, "%s\n", buf.begin());
|
||||
}
|
||||
return (GLboolean)status == GL_TRUE;
|
||||
}
|
||||
|
||||
// If you get an error please report on GitHub. You may try different GL context version or GLSL version.
|
||||
static bool CheckProgram(GLuint handle, const char* desc)
|
||||
{
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
GLint status = 0, log_length = 0;
|
||||
glGetProgramiv(handle, GL_LINK_STATUS, &status);
|
||||
glGetProgramiv(handle, GL_INFO_LOG_LENGTH, &log_length);
|
||||
if ((GLboolean)status == GL_FALSE)
|
||||
fprintf(stderr, "ERROR: ImGui_ImplOpenGL3_CreateDeviceObjects: failed to link %s! With GLSL %s\n", desc, bd->GlslVersionString);
|
||||
if (log_length > 1)
|
||||
{
|
||||
ImVector<char> buf;
|
||||
buf.resize((int)(log_length + 1));
|
||||
glGetProgramInfoLog(handle, log_length, NULL, (GLchar*)buf.begin());
|
||||
fprintf(stderr, "%s\n", buf.begin());
|
||||
}
|
||||
return (GLboolean)status == GL_TRUE;
|
||||
}
|
||||
|
||||
bool ImGui_ImplOpenGL3_CreateDeviceObjects()
|
||||
{
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
|
||||
// Backup GL state
|
||||
GLint last_texture, last_array_buffer;
|
||||
glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
|
||||
glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
|
||||
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
GLint last_vertex_array;
|
||||
glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
|
||||
#endif
|
||||
|
||||
// Parse GLSL version string
|
||||
int glsl_version = 130;
|
||||
sscanf(bd->GlslVersionString, "#version %d", &glsl_version);
|
||||
|
||||
const GLchar* vertex_shader_glsl_120 =
|
||||
"uniform mat4 ProjMtx;\n"
|
||||
"attribute vec2 Position;\n"
|
||||
"attribute vec2 UV;\n"
|
||||
"attribute vec4 Color;\n"
|
||||
"varying vec2 Frag_UV;\n"
|
||||
"varying vec4 Frag_Color;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" Frag_UV = UV;\n"
|
||||
" Frag_Color = Color;\n"
|
||||
" gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
|
||||
"}\n";
|
||||
|
||||
const GLchar* vertex_shader_glsl_130 =
|
||||
"uniform mat4 ProjMtx;\n"
|
||||
"in vec2 Position;\n"
|
||||
"in vec2 UV;\n"
|
||||
"in vec4 Color;\n"
|
||||
"out vec2 Frag_UV;\n"
|
||||
"out vec4 Frag_Color;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" Frag_UV = UV;\n"
|
||||
" Frag_Color = Color;\n"
|
||||
" gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
|
||||
"}\n";
|
||||
|
||||
const GLchar* vertex_shader_glsl_300_es =
|
||||
"precision mediump float;\n"
|
||||
"layout (location = 0) in vec2 Position;\n"
|
||||
"layout (location = 1) in vec2 UV;\n"
|
||||
"layout (location = 2) in vec4 Color;\n"
|
||||
"uniform mat4 ProjMtx;\n"
|
||||
"out vec2 Frag_UV;\n"
|
||||
"out vec4 Frag_Color;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" Frag_UV = UV;\n"
|
||||
" Frag_Color = Color;\n"
|
||||
" gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
|
||||
"}\n";
|
||||
|
||||
const GLchar* vertex_shader_glsl_410_core =
|
||||
"layout (location = 0) in vec2 Position;\n"
|
||||
"layout (location = 1) in vec2 UV;\n"
|
||||
"layout (location = 2) in vec4 Color;\n"
|
||||
"uniform mat4 ProjMtx;\n"
|
||||
"out vec2 Frag_UV;\n"
|
||||
"out vec4 Frag_Color;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" Frag_UV = UV;\n"
|
||||
" Frag_Color = Color;\n"
|
||||
" gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
|
||||
"}\n";
|
||||
|
||||
const GLchar* fragment_shader_glsl_120 =
|
||||
"#ifdef GL_ES\n"
|
||||
" precision mediump float;\n"
|
||||
"#endif\n"
|
||||
"uniform sampler2D Texture;\n"
|
||||
"varying vec2 Frag_UV;\n"
|
||||
"varying vec4 Frag_Color;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" gl_FragColor = Frag_Color * texture2D(Texture, Frag_UV.st);\n"
|
||||
"}\n";
|
||||
|
||||
const GLchar* fragment_shader_glsl_130 =
|
||||
"uniform sampler2D Texture;\n"
|
||||
"in vec2 Frag_UV;\n"
|
||||
"in vec4 Frag_Color;\n"
|
||||
"out vec4 Out_Color;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
|
||||
"}\n";
|
||||
|
||||
const GLchar* fragment_shader_glsl_300_es =
|
||||
"precision mediump float;\n"
|
||||
"uniform sampler2D Texture;\n"
|
||||
"in vec2 Frag_UV;\n"
|
||||
"in vec4 Frag_Color;\n"
|
||||
"layout (location = 0) out vec4 Out_Color;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
|
||||
"}\n";
|
||||
|
||||
const GLchar* fragment_shader_glsl_410_core =
|
||||
"in vec2 Frag_UV;\n"
|
||||
"in vec4 Frag_Color;\n"
|
||||
"uniform sampler2D Texture;\n"
|
||||
"layout (location = 0) out vec4 Out_Color;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
|
||||
"}\n";
|
||||
|
||||
// Select shaders matching our GLSL versions
|
||||
const GLchar* vertex_shader = NULL;
|
||||
const GLchar* fragment_shader = NULL;
|
||||
if (glsl_version < 130)
|
||||
{
|
||||
vertex_shader = vertex_shader_glsl_120;
|
||||
fragment_shader = fragment_shader_glsl_120;
|
||||
}
|
||||
else if (glsl_version >= 410)
|
||||
{
|
||||
vertex_shader = vertex_shader_glsl_410_core;
|
||||
fragment_shader = fragment_shader_glsl_410_core;
|
||||
}
|
||||
else if (glsl_version == 300)
|
||||
{
|
||||
vertex_shader = vertex_shader_glsl_300_es;
|
||||
fragment_shader = fragment_shader_glsl_300_es;
|
||||
}
|
||||
else
|
||||
{
|
||||
vertex_shader = vertex_shader_glsl_130;
|
||||
fragment_shader = fragment_shader_glsl_130;
|
||||
}
|
||||
|
||||
// Create shaders
|
||||
const GLchar* vertex_shader_with_version[2] = { bd->GlslVersionString, vertex_shader };
|
||||
GLuint vert_handle = glCreateShader(GL_VERTEX_SHADER);
|
||||
glShaderSource(vert_handle, 2, vertex_shader_with_version, NULL);
|
||||
glCompileShader(vert_handle);
|
||||
CheckShader(vert_handle, "vertex shader");
|
||||
|
||||
const GLchar* fragment_shader_with_version[2] = { bd->GlslVersionString, fragment_shader };
|
||||
GLuint frag_handle = glCreateShader(GL_FRAGMENT_SHADER);
|
||||
glShaderSource(frag_handle, 2, fragment_shader_with_version, NULL);
|
||||
glCompileShader(frag_handle);
|
||||
CheckShader(frag_handle, "fragment shader");
|
||||
|
||||
// Link
|
||||
bd->ShaderHandle = glCreateProgram();
|
||||
glAttachShader(bd->ShaderHandle, vert_handle);
|
||||
glAttachShader(bd->ShaderHandle, frag_handle);
|
||||
glLinkProgram(bd->ShaderHandle);
|
||||
CheckProgram(bd->ShaderHandle, "shader program");
|
||||
|
||||
glDetachShader(bd->ShaderHandle, vert_handle);
|
||||
glDetachShader(bd->ShaderHandle, frag_handle);
|
||||
glDeleteShader(vert_handle);
|
||||
glDeleteShader(frag_handle);
|
||||
|
||||
bd->AttribLocationTex = glGetUniformLocation(bd->ShaderHandle, "Texture");
|
||||
bd->AttribLocationProjMtx = glGetUniformLocation(bd->ShaderHandle, "ProjMtx");
|
||||
bd->AttribLocationVtxPos = (GLuint)glGetAttribLocation(bd->ShaderHandle, "Position");
|
||||
bd->AttribLocationVtxUV = (GLuint)glGetAttribLocation(bd->ShaderHandle, "UV");
|
||||
bd->AttribLocationVtxColor = (GLuint)glGetAttribLocation(bd->ShaderHandle, "Color");
|
||||
|
||||
// Create buffers
|
||||
glGenBuffers(1, &bd->VboHandle);
|
||||
glGenBuffers(1, &bd->ElementsHandle);
|
||||
|
||||
ImGui_ImplOpenGL3_CreateFontsTexture();
|
||||
|
||||
// Restore modified GL state
|
||||
glBindTexture(GL_TEXTURE_2D, last_texture);
|
||||
glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
|
||||
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
glBindVertexArray(last_vertex_array);
|
||||
#endif
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void ImGui_ImplOpenGL3_DestroyDeviceObjects()
|
||||
{
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
if (bd->VboHandle) { glDeleteBuffers(1, &bd->VboHandle); bd->VboHandle = 0; }
|
||||
if (bd->ElementsHandle) { glDeleteBuffers(1, &bd->ElementsHandle); bd->ElementsHandle = 0; }
|
||||
if (bd->ShaderHandle) { glDeleteProgram(bd->ShaderHandle); bd->ShaderHandle = 0; }
|
||||
ImGui_ImplOpenGL3_DestroyFontsTexture();
|
||||
}
|
||||
|
||||
//--------------------------------------------------------------------------------------------------------
|
||||
// MULTI-VIEWPORT / PLATFORM INTERFACE SUPPORT
|
||||
// This is an _advanced_ and _optional_ feature, allowing the backend to create and handle multiple viewports simultaneously.
|
||||
// If you are new to dear imgui or creating a new binding for dear imgui, it is recommended that you completely ignore this section first..
|
||||
//--------------------------------------------------------------------------------------------------------
|
||||
|
||||
static void ImGui_ImplOpenGL3_RenderWindow(ImGuiViewport* viewport, void*)
|
||||
{
|
||||
if (!(viewport->Flags & ImGuiViewportFlags_NoRendererClear))
|
||||
{
|
||||
ImVec4 clear_color = ImVec4(0.0f, 0.0f, 0.0f, 1.0f);
|
||||
glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
|
||||
glClear(GL_COLOR_BUFFER_BIT);
|
||||
}
|
||||
ImGui_ImplOpenGL3_RenderDrawData(viewport->DrawData);
|
||||
}
|
||||
|
||||
static void ImGui_ImplOpenGL3_InitPlatformInterface()
|
||||
{
|
||||
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
|
||||
platform_io.Renderer_RenderWindow = ImGui_ImplOpenGL3_RenderWindow;
|
||||
}
|
||||
|
||||
static void ImGui_ImplOpenGL3_ShutdownPlatformInterface()
|
||||
{
|
||||
ImGui::DestroyPlatformWindows();
|
||||
}
|
||||
4049
lib/external/imgui/source/imgui_tables.cpp
vendored
Normal file
4049
lib/external/imgui/source/imgui_tables.cpp
vendored
Normal file
File diff suppressed because it is too large
Load Diff
8448
lib/external/imgui/source/imgui_widgets.cpp
vendored
Normal file
8448
lib/external/imgui/source/imgui_widgets.cpp
vendored
Normal file
File diff suppressed because it is too large
Load Diff
3123
lib/external/imgui/source/imnodes.cpp
vendored
Normal file
3123
lib/external/imgui/source/imnodes.cpp
vendored
Normal file
File diff suppressed because it is too large
Load Diff
5064
lib/external/imgui/source/implot.cpp
vendored
Normal file
5064
lib/external/imgui/source/implot.cpp
vendored
Normal file
File diff suppressed because it is too large
Load Diff
2201
lib/external/imgui/source/implot_demo.cpp
vendored
Normal file
2201
lib/external/imgui/source/implot_demo.cpp
vendored
Normal file
File diff suppressed because it is too large
Load Diff
2264
lib/external/imgui/source/implot_items.cpp
vendored
Normal file
2264
lib/external/imgui/source/implot_items.cpp
vendored
Normal file
File diff suppressed because it is too large
Load Diff
Reference in New Issue
Block a user