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Backends, Examples: WebGPU: added support for WGVK. Remaining amends. (#9316, #9246, #9257)

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ocornut
2026-03-23 16:26:45 +01:00
parent 59780020f6
commit 59183cf782
2 changed files with 11 additions and 6 deletions
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13
backends/imgui_impl_wgpu.cpp
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@@ -20,6 +20,7 @@
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2026-03-25: Added support for WGVK native backend via IMGUI_IMPL_WEBGPU_BACKEND_WGVK define, with SPIRV shaders if WGSL is not available. (#9316, #9246, #9257)
// 2026-03-09: Removed support for Emscripten < 4.0.10. (#9281)
// 2025-10-16: Update to compile with Dawn and Emscripten's 4.0.10+ '--use-port=emdawnwebgpu' ports. (#8381, #8898)
// 2025-09-18: Call platform_io.ClearRendererHandlers() on shutdown.
@@ -309,7 +310,7 @@ static void SafeRelease(FrameResources& res)
SafeRelease(res.VertexBufferHost);
}
static WGPUProgrammableStageDescriptor ImGui_ImplWGPU_CreateShaderModule(const char* wgsl_source)
static WGPUProgrammableStageDescriptor ImGui_ImplWGPU_CreateShaderModuleWGSL(const char* wgsl_source)
{
ImGui_ImplWGPU_Data* bd = ImGui_ImplWGPU_GetBackendData();
@@ -327,7 +328,7 @@ static WGPUProgrammableStageDescriptor ImGui_ImplWGPU_CreateShaderModule(const c
return stage_desc;
}
static WGPUProgrammableStageDescriptor ImGui_ImplWGPU_CreateShaderModule(const void* spirv_binary, size_t spirv_length)
static WGPUProgrammableStageDescriptor ImGui_ImplWGPU_CreateShaderModuleSPIRV(const void* spirv_binary, size_t spirv_length)
{
ImGui_ImplWGPU_Data* bd = ImGui_ImplWGPU_GetBackendData();
@@ -738,8 +739,8 @@ bool ImGui_ImplWGPU_CreateDeviceObjects()
graphics_pipeline_desc.layout = wgpuDeviceCreatePipelineLayout(bd->wgpuDevice, &layout_desc);
// Create the vertex shader
WGPUProgrammableStageDescriptor vertex_shader_desc = ImGui_ImplWGPU_CreateShaderModule(__shader_vert_wgsl);
if (!vertex_shader_desc.module) vertex_shader_desc = ImGui_ImplWGPU_CreateShaderModule(__shader_vert_spirv, sizeof(__shader_vert_spirv));
WGPUProgrammableStageDescriptor vertex_shader_desc = ImGui_ImplWGPU_CreateShaderModuleWGSL(__shader_vert_wgsl);
if (!vertex_shader_desc.module) vertex_shader_desc = ImGui_ImplWGPU_CreateShaderModuleSPIRV(__shader_vert_spirv, sizeof(__shader_vert_spirv));
graphics_pipeline_desc.vertex.module = vertex_shader_desc.module;
graphics_pipeline_desc.vertex.entryPoint = vertex_shader_desc.entryPoint;
@@ -767,8 +768,8 @@ bool ImGui_ImplWGPU_CreateDeviceObjects()
graphics_pipeline_desc.vertex.buffers = buffer_layouts;
// Create the pixel shader
WGPUProgrammableStageDescriptor pixel_shader_desc = ImGui_ImplWGPU_CreateShaderModule(__shader_frag_wgsl);
if (!pixel_shader_desc.module) pixel_shader_desc = ImGui_ImplWGPU_CreateShaderModule(__shader_frag_spirv, sizeof(__shader_frag_spirv));
WGPUProgrammableStageDescriptor pixel_shader_desc = ImGui_ImplWGPU_CreateShaderModuleWGSL(__shader_frag_wgsl);
if (!pixel_shader_desc.module) pixel_shader_desc = ImGui_ImplWGPU_CreateShaderModuleSPIRV(__shader_frag_spirv, sizeof(__shader_frag_spirv));
// Create the blending setup
WGPUBlendState blend_state = {};

4
docs/CHANGELOG.txt
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@@ -152,6 +152,10 @@ Other Changes:
vertex/index buffers. (#9262) [@jaenis]
- WebGPU: fixed version check for Emscripten 5.0.0+.
- WebGPU: removed support for Emscripten <4.0.10. (#9281) [@ypujante]
- WebGPU: added support for WGVK native backend via IMGUI_IMPL_WEBGPU_BACKEND_WGVK,
using SPIRV shaders if WGSL is not available. (#9316, #9246, #9257) [@r-lyeh]
(WGVK is a lightweight alternative to Dawn or WGPU for native applications,
which is easier to build/setup, see: https://github.com/manuel5975p/WGVK)
- Examples:
- Emscripten: added `tabindex=-1` to canvas in our shell_minimal.htm. Without it,
the canvas was not focusable in the DOM, which in turn make some backends