mirror of https://github.com/ocornut/imgui
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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@ -16,6 +16,7 @@
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// CHANGELOG
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// (minor and older changes stripped away, please see git history for details)
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// 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)
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// 2024-01-22: Added configurable PipelineMultisampleState struct. (#7240)
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// 2024-01-22: (Breaking) ImGui_ImplWGPU_Init() now takes a ImGui_ImplWGPU_InitInfo structure instead of variety of parameters, allowing for easier further changes.
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// 2024-01-22: Fixed pipeline layout leak. (#7245)
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@ -35,6 +36,18 @@
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// 2021-02-18: Change blending equation to preserve alpha in output buffer.
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// 2021-01-28: Initial version.
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// When targeting native platforms (i.e. NOT emscripten), one of IMGUI_IMPL_WEBGPU_BACKEND_DAWN
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// or IMGUI_IMPL_WEBGPU_BACKEND_WGPU must be provided. See imgui_impl_wgpu.h for more details.
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#ifndef __EMSCRIPTEN__
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#if defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN) == defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
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#error exactly one of IMGUI_IMPL_WEBGPU_BACKEND_DAWN or IMGUI_IMPL_WEBGPU_BACKEND_WGPU must be defined!
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#endif
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#else
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#if defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN) || defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
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#error neither IMGUI_IMPL_WEBGPU_BACKEND_DAWN nor IMGUI_IMPL_WEBGPU_BACKEND_WGPU may be defined if targeting emscripten!
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#endif
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#endif
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#include "imgui.h"
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#ifndef IMGUI_DISABLE
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#include "imgui_impl_wgpu.h"
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@ -245,7 +258,11 @@ static WGPUProgrammableStageDescriptor ImGui_ImplWGPU_CreateShaderModule(const c
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ImGui_ImplWGPU_Data* bd = ImGui_ImplWGPU_GetBackendData();
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WGPUShaderModuleWGSLDescriptor wgsl_desc = {};
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#ifdef IMGUI_IMPL_WEBGPU_BACKEND_DAWN
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wgsl_desc.chain.sType = WGPUSType_ShaderSourceWGSL;
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#else
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wgsl_desc.chain.sType = WGPUSType_ShaderModuleWGSLDescriptor;
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#endif
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wgsl_desc.code = wgsl_source;
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WGPUShaderModuleDescriptor desc = {};
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@ -660,7 +677,11 @@ bool ImGui_ImplWGPU_CreateDeviceObjects()
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// Create depth-stencil State
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WGPUDepthStencilState depth_stencil_state = {};
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depth_stencil_state.format = bd->depthStencilFormat;
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#ifdef IMGUI_IMPL_WEBGPU_BACKEND_DAWN
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depth_stencil_state.depthWriteEnabled = WGPUOptionalBool_False;
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#else
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depth_stencil_state.depthWriteEnabled = false;
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#endif
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depth_stencil_state.depthCompare = WGPUCompareFunction_Always;
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depth_stencil_state.stencilFront.compare = WGPUCompareFunction_Always;
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depth_stencil_state.stencilFront.failOp = WGPUStencilOperation_Keep;
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@ -730,7 +751,15 @@ bool ImGui_ImplWGPU_Init(ImGui_ImplWGPU_InitInfo* init_info)
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// Setup backend capabilities flags
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ImGui_ImplWGPU_Data* bd = IM_NEW(ImGui_ImplWGPU_Data)();
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io.BackendRendererUserData = (void*)bd;
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#if defined(__EMSCRIPTEN__)
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io.BackendRendererName = "imgui_impl_webgpu_emscripten";
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#elif defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN)
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io.BackendRendererName = "imgui_impl_webgpu_dawn";
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#elif defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
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io.BackendRendererName = "imgui_impl_webgpu_wgpu";
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#else
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io.BackendRendererName = "imgui_impl_webgpu";
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#endif
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io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
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bd->initInfo = *init_info;
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@ -2,6 +2,13 @@
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// This needs to be used along with a Platform Binding (e.g. GLFW)
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// (Please note that WebGPU is currently experimental, will not run on non-beta browsers, and may break.)
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// Important note to dawn and/or wgpu users: when targeting native platforms (i.e. NOT emscripten),
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// one of IMGUI_IMPL_WEBGPU_BACKEND_DAWN or IMGUI_IMPL_WEBGPU_BACKEND_WGPU must be provided.
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// Add #define to your imconfig.h file, or as a compilation flag in your build system.
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// This requirement will be removed once WebGPU stabilizes and backends converge on a unified interface.
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//#define IMGUI_IMPL_WEBGPU_BACKEND_DAWN
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//#define IMGUI_IMPL_WEBGPU_BACKEND_WGPU
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// Implemented features:
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// [X] Renderer: User texture binding. Use 'WGPUTextureView' as ImTextureID. Read the FAQ about ImTextureID!
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// [X] Renderer: Large meshes support (64k+ vertices) with 16-bit indices.
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@ -77,6 +77,8 @@ Other changes:
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- Backends: SDL2: use SDL_Vulkan_GetDrawableSize() when available. (#7967, #3190) [@scribam]
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- Backends: GLFW+Emscripten: use OSX behaviors automatically when using contrib glfw port. (#7965, #7915)
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[@ypujante]
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- Backends: WebGPU: Added support for optional IMGUI_IMPL_WEBGPU_BACKEND_DAWN / IMGUI_IMPL_WEBGPU_BACKEND_WGPU
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defines to handle ever-changing native implementations. (#7977, #7969, #6602, #6188, #7523) [@acgaudette]
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-----------------------------------------------------------------------
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VERSION 1.91.1 (Released 2024-09-04)
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@ -79,6 +79,11 @@ add_executable(example_glfw_wgpu
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${IMGUI_DIR}/imgui_tables.cpp
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${IMGUI_DIR}/imgui_widgets.cpp
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)
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IF(NOT EMSCRIPTEN)
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target_compile_definitions(example_glfw_wgpu PUBLIC
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"IMGUI_IMPL_WEBGPU_BACKEND_DAWN"
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)
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endif()
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target_include_directories(example_glfw_wgpu PUBLIC
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${IMGUI_DIR}
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${IMGUI_DIR}/backends
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