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Backends: DX12: comment about using SrvDescriptorAllocFn/SrvDescriptorFreeFn.

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Amend 40b2286d16
This commit is contained in:
ocornut
2025-03-12 15:47:37 +01:00
parent 09654f4e8c
commit de4f77b0ac
3 changed files with 5 additions and 2 deletions
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2
backends/imgui_impl_dx12.cpp
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@@ -748,7 +748,7 @@ bool ImGui_ImplDX12_Init(ImGui_ImplDX12_InitInfo* init_info)
init_info->SrvDescriptorAllocFn = [](ImGui_ImplDX12_InitInfo*, D3D12_CPU_DESCRIPTOR_HANDLE* out_cpu_handle, D3D12_GPU_DESCRIPTOR_HANDLE* out_gpu_handle)
{
ImGui_ImplDX12_Data* bd = ImGui_ImplDX12_GetBackendData();
IM_ASSERT(bd->LegacySingleDescriptorUsed == false);
IM_ASSERT(bd->LegacySingleDescriptorUsed == false && "Only 1 simultaneous texture allowed with legacy ImGui_ImplDX12_Init() signature!");
*out_cpu_handle = bd->InitInfo.LegacySingleSrvCpuDescriptor;
*out_gpu_handle = bd->InitInfo.LegacySingleSrvGpuDescriptor;
bd->LegacySingleDescriptorUsed = true;

2
backends/imgui_impl_dx12.h
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@@ -34,7 +34,7 @@ struct ImGui_ImplDX12_InitInfo
void* UserData;
// Allocating SRV descriptors for textures is up to the application, so we provide callbacks.
// (current version of the backend will only allocate one descriptor, future versions will need to allocate more)
// (current version of the backend will only allocate one descriptor, from 1.92 the backend will need to allocate more)
ID3D12DescriptorHeap* SrvDescriptorHeap;
void (*SrvDescriptorAllocFn)(ImGui_ImplDX12_InitInfo* info, D3D12_CPU_DESCRIPTOR_HANDLE* out_cpu_desc_handle, D3D12_GPU_DESCRIPTOR_HANDLE* out_gpu_desc_handle);
void (*SrvDescriptorFreeFn)(ImGui_ImplDX12_InitInfo* info, D3D12_CPU_DESCRIPTOR_HANDLE cpu_desc_handle, D3D12_GPU_DESCRIPTOR_HANDLE gpu_desc_handle);