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Examples: Emscripten+webgpu: Fixed WGPUInstance creation process + use preferred framebuffer format. (#6640, #6748)

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wushiyang 2023-08-24 16:04:50 +08:00 committed by ocornut
parent 4a81424492
commit 981abb4612
2 changed files with 15 additions and 10 deletions
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2
docs/CHANGELOG.txt
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@ -72,6 +72,8 @@ Other changes:
- Backends: SDL2,SDL3: added ImGui_ImplSDL2_InitForOther()/ImGui_ImplSDL3_InitForOther()
for consistency (matching GLFW backend) and as most initialization paths don't actually
need to care about rendering backend.
- Examples: Emscripten+WebGPU: Fixed WGPUInstance creation process + use preferred
framebuffer format. (#6640, #6748) [@smileorigin]
-----------------------------------------------------------------------

23
examples/example_emscripten_wgpu/main.cpp
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@ -15,11 +15,12 @@
#include <webgpu/webgpu_cpp.h>
// Global WebGPU required states
static WGPUDevice wgpu_device = nullptr;
static WGPUSurface wgpu_surface = nullptr;
static WGPUSwapChain wgpu_swap_chain = nullptr;
static int wgpu_swap_chain_width = 0;
static int wgpu_swap_chain_height = 0;
static WGPUDevice wgpu_device = nullptr;
static WGPUSurface wgpu_surface = nullptr;
static WGPUTextureFormat wgpu_preferred_fmt = WGPUTextureFormat_RGBA8Unorm;
static WGPUSwapChain wgpu_swap_chain = nullptr;
static int wgpu_swap_chain_width = 0;
static int wgpu_swap_chain_height = 0;
// Forward declarations
static void MainLoopStep(void* window);
@ -71,7 +72,7 @@ int main(int, char**)
// Setup Platform/Renderer backends
ImGui_ImplGlfw_InitForOther(window, true);
ImGui_ImplWGPU_Init(wgpu_device, 3, WGPUTextureFormat_RGBA8Unorm, WGPUTextureFormat_Undefined);
ImGui_ImplWGPU_Init(wgpu_device, 3, wgpu_preferred_fmt, WGPUTextureFormat_Undefined);
// Load Fonts
// - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
@ -118,9 +119,11 @@ static bool InitWGPU()
wgpu::SurfaceDescriptor surface_desc = {};
surface_desc.nextInChain = &html_surface_desc;
// Use 'null' instance
wgpu::Instance instance = {};
wgpu_surface = instance.CreateSurface(&surface_desc).Release();
wgpu::Instance instance = wgpuCreateInstance(nullptr);
wgpu::Surface surface = instance.CreateSurface(&surface_desc);
wgpu::Adapter adapter = {};
wgpu_preferred_fmt = (WGPUTextureFormat)surface.GetPreferredFormat(adapter);
wgpu_surface = surface.Release();
return true;
}
@ -144,7 +147,7 @@ static void MainLoopStep(void* window)
wgpu_swap_chain_height = height;
WGPUSwapChainDescriptor swap_chain_desc = {};
swap_chain_desc.usage = WGPUTextureUsage_RenderAttachment;
swap_chain_desc.format = WGPUTextureFormat_RGBA8Unorm;
swap_chain_desc.format = wgpu_preferred_fmt;
swap_chain_desc.width = width;
swap_chain_desc.height = height;
swap_chain_desc.presentMode = WGPUPresentMode_Fifo;