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Backend: webgpu: Fixes blending issue on Chrome 90+ and makes backend forward compatible with Emscripten 2.0.14 (#3632, #3770)

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Basil Fierz 2021-01-30 20:25:20 +01:00 committed by ocornut
parent 03d74a293d
commit 82a9b599ab
1 changed files with 21 additions and 3 deletions
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24
backends/imgui_impl_wgpu.cpp
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@ -19,6 +19,8 @@
#include <limits.h>
#include <webgpu/webgpu.h>
#define HAS_EMSCRIPTEN_VERSION(major, minor, tiny) (__EMSCRIPTEN_major__ > (major) || (__EMSCRIPTEN_major__ == (major) && __EMSCRIPTEN_minor__ > (minor)) || (__EMSCRIPTEN_major__ == (major) && __EMSCRIPTEN_minor__ == (minor) && __EMSCRIPTEN_tiny__ >= (tiny)))
// Dear ImGui prototypes from imgui_internal.h
extern ImGuiID ImHashData(const void* data_p, size_t data_size, ImU32 seed = 0);
@ -495,7 +497,7 @@ static void ImGui_ImplWGPU_CreateFontsTexture()
textureCopyView.texture = g_resources.FontTexture;
textureCopyView.mipLevel = 0;
textureCopyView.origin = { 0, 0, 0 };
#ifndef __EMSCRIPTEN__
#if !defined(__EMSCRIPTEN__) || HAS_EMSCRIPTEN_VERSION(2, 0, 14)
textureCopyView.aspect = WGPUTextureAspect_All;
#endif
@ -522,6 +524,9 @@ static void ImGui_ImplWGPU_CreateFontsTexture()
sampler_desc.addressModeU = WGPUAddressMode_Repeat;
sampler_desc.addressModeV = WGPUAddressMode_Repeat;
sampler_desc.addressModeW = WGPUAddressMode_Repeat;
#if !defined(__EMSCRIPTEN__) || HAS_EMSCRIPTEN_VERSION(2, 0, 14)
sampler_desc.maxAnisotropy = 1;
#endif
g_resources.Sampler = wgpuDeviceCreateSampler(g_wgpuDevice, &sampler_desc);
}
@ -559,15 +564,28 @@ bool ImGui_ImplWGPU_CreateDeviceObjects()
WGPUBindGroupLayoutEntry common_bg_layout_entries[2] = {};
common_bg_layout_entries[0].binding = 0;
common_bg_layout_entries[0].visibility = WGPUShaderStage_Vertex;
#if !defined(__EMSCRIPTEN__) || HAS_EMSCRIPTEN_VERSION(2, 0, 14)
common_bg_layout_entries[0].buffer.type = WGPUBufferBindingType_Uniform;
#else
common_bg_layout_entries[0].type = WGPUBindingType_UniformBuffer;
#endif
common_bg_layout_entries[1].binding = 1;
common_bg_layout_entries[1].visibility = WGPUShaderStage_Fragment;
#if !defined(__EMSCRIPTEN__) || HAS_EMSCRIPTEN_VERSION(2, 0, 14)
common_bg_layout_entries[1].sampler.type = WGPUSamplerBindingType_Filtering;
#else
common_bg_layout_entries[1].type = WGPUBindingType_Sampler;
#endif
WGPUBindGroupLayoutEntry image_bg_layout_entries[1] = {};
image_bg_layout_entries[0].binding = 0;
image_bg_layout_entries[0].visibility = WGPUShaderStage_Fragment;
#if !defined(__EMSCRIPTEN__) || HAS_EMSCRIPTEN_VERSION(2, 0, 14)
image_bg_layout_entries[0].texture.sampleType = WGPUTextureSampleType_Float;
image_bg_layout_entries[0].texture.viewDimension = WGPUTextureViewDimension_2D;
#else
image_bg_layout_entries[0].type = WGPUBindingType_SampledTexture;
#endif
WGPUBindGroupLayoutDescriptor common_bg_layout_desc = {};
common_bg_layout_desc.entryCount = 2;
@ -620,8 +638,8 @@ bool ImGui_ImplWGPU_CreateDeviceObjects()
{
color_state.format = g_renderTargetFormat;
color_state.alphaBlend.operation = WGPUBlendOperation_Add;
color_state.alphaBlend.srcFactor = WGPUBlendFactor_OneMinusSrcAlpha;
color_state.alphaBlend.dstFactor = WGPUBlendFactor_Zero;
color_state.alphaBlend.srcFactor = WGPUBlendFactor_SrcAlpha;
color_state.alphaBlend.dstFactor = WGPUBlendFactor_OneMinusSrcAlpha;
color_state.colorBlend.operation = WGPUBlendOperation_Add;
color_state.colorBlend.srcFactor = WGPUBlendFactor_SrcAlpha;
color_state.colorBlend.dstFactor = WGPUBlendFactor_OneMinusSrcAlpha;