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Backends: WGPU: add IMGUI_IMPL_WEBGPU_BACKEND_DAWN/IMGUI_IMPL_WEBGPU_BACKEND_WGPU to support more targets. (#7977, #7969, #6602, #6188, #7523)

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Aaron C Gaudette
2024-09-16 16:07:02 +02:00
committed by ocornut
parent 4925695ae8
commit 1ac162f2b0
4 changed files with 43 additions and 0 deletions
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29
backends/imgui_impl_wgpu.cpp
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@@ -16,6 +16,7 @@
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2024-09-16: Added support for optional IMGUI_IMPL_WEBGPU_BACKEND_DAWN / IMGUI_IMPL_WEBGPU_BACKEND_WGPU define to handle ever-changing native implementations. (#7977)
// 2024-01-22: Added configurable PipelineMultisampleState struct. (#7240)
// 2024-01-22: (Breaking) ImGui_ImplWGPU_Init() now takes a ImGui_ImplWGPU_InitInfo structure instead of variety of parameters, allowing for easier further changes.
// 2024-01-22: Fixed pipeline layout leak. (#7245)
@@ -35,6 +36,18 @@
// 2021-02-18: Change blending equation to preserve alpha in output buffer.
// 2021-01-28: Initial version.
// When targeting native platforms (i.e. NOT emscripten), one of IMGUI_IMPL_WEBGPU_BACKEND_DAWN
// or IMGUI_IMPL_WEBGPU_BACKEND_WGPU must be provided. See imgui_impl_wgpu.h for more details.
#ifndef __EMSCRIPTEN__
#if defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN) == defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
#error exactly one of IMGUI_IMPL_WEBGPU_BACKEND_DAWN or IMGUI_IMPL_WEBGPU_BACKEND_WGPU must be defined!
#endif
#else
#if defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN) || defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
#error neither IMGUI_IMPL_WEBGPU_BACKEND_DAWN nor IMGUI_IMPL_WEBGPU_BACKEND_WGPU may be defined if targeting emscripten!
#endif
#endif
#include "imgui.h"
#ifndef IMGUI_DISABLE
#include "imgui_impl_wgpu.h"
@@ -245,7 +258,11 @@ static WGPUProgrammableStageDescriptor ImGui_ImplWGPU_CreateShaderModule(const c
ImGui_ImplWGPU_Data* bd = ImGui_ImplWGPU_GetBackendData();
WGPUShaderModuleWGSLDescriptor wgsl_desc = {};
#ifdef IMGUI_IMPL_WEBGPU_BACKEND_DAWN
wgsl_desc.chain.sType = WGPUSType_ShaderSourceWGSL;
#else
wgsl_desc.chain.sType = WGPUSType_ShaderModuleWGSLDescriptor;
#endif
wgsl_desc.code = wgsl_source;
WGPUShaderModuleDescriptor desc = {};
@@ -660,7 +677,11 @@ bool ImGui_ImplWGPU_CreateDeviceObjects()
// Create depth-stencil State
WGPUDepthStencilState depth_stencil_state = {};
depth_stencil_state.format = bd->depthStencilFormat;
#ifdef IMGUI_IMPL_WEBGPU_BACKEND_DAWN
depth_stencil_state.depthWriteEnabled = WGPUOptionalBool_False;
#else
depth_stencil_state.depthWriteEnabled = false;
#endif
depth_stencil_state.depthCompare = WGPUCompareFunction_Always;
depth_stencil_state.stencilFront.compare = WGPUCompareFunction_Always;
depth_stencil_state.stencilFront.failOp = WGPUStencilOperation_Keep;
@@ -730,7 +751,15 @@ bool ImGui_ImplWGPU_Init(ImGui_ImplWGPU_InitInfo* init_info)
// Setup backend capabilities flags
ImGui_ImplWGPU_Data* bd = IM_NEW(ImGui_ImplWGPU_Data)();
io.BackendRendererUserData = (void*)bd;
#if defined(__EMSCRIPTEN__)
io.BackendRendererName = "imgui_impl_webgpu_emscripten";
#elif defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN)
io.BackendRendererName = "imgui_impl_webgpu_dawn";
#elif defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
io.BackendRendererName = "imgui_impl_webgpu_wgpu";
#else
io.BackendRendererName = "imgui_impl_webgpu";
#endif
io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
bd->initInfo = *init_info;