mirror of
https://github.com/ocornut/imgui.git
synced 2025-04-04 21:15:09 +00:00
Merge 5f371da49a into b4bd596a39
This commit is contained in:
Michele Morrone
GitHub
commit
c53e7c75ee
11 changed files with 1050 additions and 97 deletions
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@ -687,6 +687,7 @@ bool ImGui_ImplWGPU_CreateDeviceObjects()
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// Vertex input configuration
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WGPUVertexAttribute attribute_desc[] =
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{
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#ifdef IMGUI_IMPL_WEBGPU_BACKEND_DAWN
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{ nullptr, WGPUVertexFormat_Float32x2, (uint64_t)offsetof(ImDrawVert, pos), 0 },
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{ nullptr, WGPUVertexFormat_Float32x2, (uint64_t)offsetof(ImDrawVert, uv), 1 },
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9
examples/example_glfw_wgpu/CMakeLists.txt
Normal file → Executable file
9
examples/example_glfw_wgpu/CMakeLists.txt
Normal file → Executable file
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@ -62,6 +62,15 @@ else()
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option(TINT_BUILD_WGSL_WRITER "Build the WGSL output writer" ON)
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endif()
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# check if WAYLAND is the current Session Type and enable DAWN_USE_WAYLAND Wayland option @compile time
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# You can override this using: cmake -DDAWN_USE_WAYLAND=X (X = ON | OFF)
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if(UNIX)
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if ($ENV{XDG_SESSION_TYPE} MATCHES wayland)
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option(DAWN_USE_WAYLAND "Enable support for Wayland surface" ON)
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endif()
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endif()
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add_subdirectory("${IMGUI_DAWN_DIR}" "${CMAKE_CURRENT_BINARY_DIR}/dawn" EXCLUDE_FROM_ALL)
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set(LIBRARIES webgpu_dawn webgpu_cpp webgpu_glfw glfw)
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274
examples/example_glfw_wgpu/main.cpp
Normal file → Executable file
274
examples/example_glfw_wgpu/main.cpp
Normal file → Executable file
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@ -22,44 +22,104 @@
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#endif
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#include <GLFW/glfw3.h>
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#include <webgpu/webgpu.h>
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#include <webgpu/webgpu_cpp.h>
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// This example can also compile and run with Emscripten! See 'Makefile.emscripten' for details.
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#ifdef __EMSCRIPTEN__
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#include <webgpu/webgpu.h>
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#include <webgpu/webgpu_cpp.h>
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#include "../libs/emscripten/emscripten_mainloop_stub.h"
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#endif
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// Global WebGPU required states
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static WGPUInstance wgpu_instance = nullptr;
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static WGPUDevice wgpu_device = nullptr;
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static WGPUSurface wgpu_surface = nullptr;
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static WGPUTextureFormat wgpu_preferred_fmt = WGPUTextureFormat_RGBA8Unorm;
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static WGPUSwapChain wgpu_swap_chain = nullptr;
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static int wgpu_swap_chain_width = 1280;
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static int wgpu_swap_chain_height = 720;
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static WGPUInstance wgpu_instance = nullptr;
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static WGPUDevice wgpu_device = nullptr;
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static WGPUSurface wgpu_surface = nullptr;
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static WGPUQueue wgpu_queue = nullptr;
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static WGPUTextureFormat wgpu_preferred_fmt = WGPUTextureFormat_Undefined; // acquired from SurfaceCapabilities
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static WGPUSurfaceConfiguration wgpu_surface_configuration {};
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static int wgpu_surface_width = 1280;
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static int wgpu_surface_height = 720;
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// Forward declarations
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static bool InitWGPU(GLFWwindow* window);
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static void CreateSwapChain(int width, int height);
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static void ResizeSurface(int width, int height);
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#ifndef __EMSCRIPTEN__
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static void wgpu_device_lost_callback(const wgpu::Device&, wgpu::DeviceLostReason reason, wgpu::StringView message)
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{
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const char* reasonName = "";
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switch (reason)
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{
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case wgpu::DeviceLostReason::Unknown: reasonName = "Unknown"; break;
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case wgpu::DeviceLostReason::Destroyed: reasonName = "Destroyed"; break;
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case wgpu::DeviceLostReason::CallbackCancelled: reasonName = "InstanceDropped"; break;
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case wgpu::DeviceLostReason::FailedCreation: reasonName = "FailedCreation"; break;
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default: reasonName = "UNREACHABLE"; break;
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}
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printf("%s device message: %s\n", reasonName, message.data);
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}
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static void wgpu_error_callback(const wgpu::Device&, wgpu::ErrorType type, wgpu::StringView message)
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{
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const char* errorTypeName = "";
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switch (type)
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{
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case wgpu::ErrorType::Validation: errorTypeName = "Validation"; break;
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case wgpu::ErrorType::OutOfMemory: errorTypeName = "Out of memory"; break;
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case wgpu::ErrorType::Unknown: errorTypeName = "Unknown"; break;
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case wgpu::ErrorType::Internal: errorTypeName = "Internal"; break;
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default: errorTypeName = "UNREACHABLE"; break;
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}
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printf("%s error: %s\n", errorTypeName, message.data);
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}
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#endif
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static void glfw_error_callback(int error, const char* description)
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{
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printf("GLFW Error %d: %s\n", error, description);
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}
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static void wgpu_error_callback(WGPUErrorType error_type, const char* message, void*)
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static WGPUTexture check_surface_texture_status(GLFWwindow * window)
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{
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const char* error_type_lbl = "";
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switch (error_type)
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WGPUSurfaceTexture surfaceTexture;
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wgpuSurfaceGetCurrentTexture(wgpu_surface, &surfaceTexture);
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switch ( surfaceTexture.status )
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{
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case WGPUErrorType_Validation: error_type_lbl = "Validation"; break;
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case WGPUErrorType_OutOfMemory: error_type_lbl = "Out of memory"; break;
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case WGPUErrorType_Unknown: error_type_lbl = "Unknown"; break;
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case WGPUErrorType_DeviceLost: error_type_lbl = "Device lost"; break;
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default: error_type_lbl = "Unknown";
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#if !defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN)
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case WGPUSurfaceGetCurrentTextureStatus_Success:
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break;
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#else
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case WGPUSurfaceGetCurrentTextureStatus_SuccessOptimal:
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break;
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case WGPUSurfaceGetCurrentTextureStatus_SuccessSuboptimal:
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#endif
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case WGPUSurfaceGetCurrentTextureStatus_Timeout:
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case WGPUSurfaceGetCurrentTextureStatus_Outdated:
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case WGPUSurfaceGetCurrentTextureStatus_Lost:
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// if the status is NOT Optimal let's try to reconfigure the surface
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{
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#ifndef NDEBUG
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printf("Bad surface texture status: %d\n", surfaceTexture.status);
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#endif
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if (surfaceTexture.texture)
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wgpuTextureRelease(surfaceTexture.texture);
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int width, height;
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glfwGetFramebufferSize(window, &width, &height);
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if ( width > 0 && height > 0 )
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{
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wgpu_surface_configuration.width = width;
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wgpu_surface_configuration.height = height;
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wgpuSurfaceConfigure(wgpu_surface, &wgpu_surface_configuration);
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}
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return nullptr;
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}
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default: // should never be reached
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assert(!"Unexpected Surface Texture status error\n");
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return nullptr;
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}
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printf("%s error: %s\n", error_type_lbl, message);
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return surfaceTexture.texture;
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}
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// Main code
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@ -72,19 +132,18 @@ int main(int, char**)
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// Make sure GLFW does not initialize any graphics context.
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// This needs to be done explicitly later.
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glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
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GLFWwindow* window = glfwCreateWindow(wgpu_swap_chain_width, wgpu_swap_chain_height, "Dear ImGui GLFW+WebGPU example", nullptr, nullptr);
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GLFWwindow* window = glfwCreateWindow(wgpu_surface_width, wgpu_surface_height, "Dear ImGui GLFW+WebGPU example", nullptr, nullptr);
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if (window == nullptr)
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return 1;
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// Initialize the WebGPU environment
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if (!InitWGPU(window))
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{
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if (window)
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glfwDestroyWindow(window);
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glfwDestroyWindow(window);
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glfwTerminate();
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return 1;
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}
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CreateSwapChain(wgpu_swap_chain_width, wgpu_swap_chain_height);
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glfwShowWindow(window);
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// Setup Dear ImGui context
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@ -160,13 +219,17 @@ int main(int, char**)
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// React to changes in screen size
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int width, height;
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glfwGetFramebufferSize((GLFWwindow*)window, &width, &height);
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if (width != wgpu_swap_chain_width || height != wgpu_swap_chain_height)
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if (width != wgpu_surface_width || height != wgpu_surface_height)
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{
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ImGui_ImplWGPU_InvalidateDeviceObjects();
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CreateSwapChain(width, height);
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ResizeSurface(width, height);
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ImGui_ImplWGPU_CreateDeviceObjects();
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}
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// Check surface texture status
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WGPUTexture texture = check_surface_texture_status(window);
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if(!texture) continue;
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// Start the Dear ImGui frame
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ImGui_ImplWGPU_NewFrame();
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ImGui_ImplGlfw_NewFrame();
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@ -212,21 +275,25 @@ int main(int, char**)
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// Rendering
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ImGui::Render();
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#ifndef __EMSCRIPTEN__
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// Tick needs to be called in Dawn to display validation errors
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wgpuDeviceTick(wgpu_device);
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#endif
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WGPUTextureViewDescriptor viewDescriptor {};
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viewDescriptor.format = wgpu_preferred_fmt;
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viewDescriptor.dimension = WGPUTextureViewDimension_2D ;
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viewDescriptor.mipLevelCount = WGPU_MIP_LEVEL_COUNT_UNDEFINED;
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viewDescriptor.arrayLayerCount = WGPU_ARRAY_LAYER_COUNT_UNDEFINED;
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viewDescriptor.aspect = WGPUTextureAspect_All;
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WGPURenderPassColorAttachment color_attachments = {};
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WGPUTextureView textureView = wgpuTextureCreateView(texture, &viewDescriptor);
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WGPURenderPassColorAttachment color_attachments {};
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color_attachments.depthSlice = WGPU_DEPTH_SLICE_UNDEFINED;
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color_attachments.loadOp = WGPULoadOp_Clear;
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color_attachments.storeOp = WGPUStoreOp_Store;
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color_attachments.loadOp = WGPULoadOp_Clear;
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color_attachments.storeOp = WGPUStoreOp_Store;
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color_attachments.clearValue = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w };
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color_attachments.view = wgpuSwapChainGetCurrentTextureView(wgpu_swap_chain);
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color_attachments.view = textureView;
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WGPURenderPassDescriptor render_pass_desc = {};
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render_pass_desc.colorAttachmentCount = 1;
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render_pass_desc.colorAttachments = &color_attachments;
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WGPURenderPassDescriptor render_pass_desc {};
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render_pass_desc.colorAttachmentCount = 1;
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render_pass_desc.colorAttachments = &color_attachments;
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render_pass_desc.depthStencilAttachment = nullptr;
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WGPUCommandEncoderDescriptor enc_desc = {};
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@ -236,16 +303,16 @@ int main(int, char**)
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ImGui_ImplWGPU_RenderDrawData(ImGui::GetDrawData(), pass);
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wgpuRenderPassEncoderEnd(pass);
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WGPUCommandBufferDescriptor cmd_buffer_desc = {};
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WGPUCommandBufferDescriptor cmd_buffer_desc {};
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WGPUCommandBuffer cmd_buffer = wgpuCommandEncoderFinish(encoder, &cmd_buffer_desc);
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WGPUQueue queue = wgpuDeviceGetQueue(wgpu_device);
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wgpuQueueSubmit(queue, 1, &cmd_buffer);
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wgpuQueueSubmit(wgpu_queue, 1, &cmd_buffer);
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#ifndef __EMSCRIPTEN__
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wgpuSwapChainPresent(wgpu_swap_chain);
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wgpuSurfacePresent(wgpu_surface);
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// Tick needs to be called in Dawn to display validation errors
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wgpuDeviceTick(wgpu_device);
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#endif
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wgpuTextureViewRelease(color_attachments.view);
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wgpuTextureViewRelease(textureView);
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wgpuRenderPassEncoderRelease(pass);
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wgpuCommandEncoderRelease(encoder);
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wgpuCommandBufferRelease(cmd_buffer);
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@ -259,58 +326,32 @@ int main(int, char**)
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ImGui_ImplGlfw_Shutdown();
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ImGui::DestroyContext();
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wgpuSurfaceUnconfigure(wgpu_surface);
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wgpuSurfaceRelease(wgpu_surface);
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wgpuQueueRelease(wgpu_queue);
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wgpuDeviceRelease(wgpu_device);
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wgpuInstanceRelease(wgpu_instance);
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glfwDestroyWindow(window);
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glfwTerminate();
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return 0;
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}
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#ifndef __EMSCRIPTEN__
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static WGPUAdapter RequestAdapter(WGPUInstance instance)
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{
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auto onAdapterRequestEnded = [](WGPURequestAdapterStatus status, WGPUAdapter adapter, const char* message, void* pUserData)
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{
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if (status == WGPURequestAdapterStatus_Success)
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*(WGPUAdapter*)(pUserData) = adapter;
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else
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printf("Could not get WebGPU adapter: %s\n", message);
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};
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WGPUAdapter adapter;
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wgpuInstanceRequestAdapter(instance, nullptr, onAdapterRequestEnded, (void*)&adapter);
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return adapter;
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}
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static WGPUDevice RequestDevice(WGPUAdapter& adapter)
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{
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auto onDeviceRequestEnded = [](WGPURequestDeviceStatus status, WGPUDevice device, const char* message, void* pUserData)
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{
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if (status == WGPURequestDeviceStatus_Success)
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*(WGPUDevice*)(pUserData) = device;
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else
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printf("Could not get WebGPU device: %s\n", message);
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};
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WGPUDevice device;
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wgpuAdapterRequestDevice(adapter, nullptr, onDeviceRequestEnded, (void*)&device);
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return device;
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}
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#endif
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static bool InitWGPU(GLFWwindow* window)
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{
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wgpu::Instance instance = wgpuCreateInstance(nullptr);
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wgpu_surface_configuration.presentMode = WGPUPresentMode_Fifo;
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wgpu_surface_configuration.alphaMode = WGPUCompositeAlphaMode_Auto;
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wgpu_surface_configuration.usage = WGPUTextureUsage_RenderAttachment;
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wgpu_surface_configuration.width = wgpu_surface_width;
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wgpu_surface_configuration.height = wgpu_surface_height;
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#ifdef __EMSCRIPTEN__
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wgpu::Instance instance = wgpuCreateInstance(nullptr);
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wgpu_device = emscripten_webgpu_get_device();
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if (!wgpu_device)
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return false;
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#else
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WGPUAdapter adapter = RequestAdapter(instance.Get());
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if (!adapter)
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return false;
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wgpu_device = RequestDevice(adapter);
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#endif
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#ifdef __EMSCRIPTEN__
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wgpu::SurfaceDescriptorFromCanvasHTMLSelector html_surface_desc = {};
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html_surface_desc.selector = "#canvas";
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wgpu::SurfaceDescriptor surface_desc = {};
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@ -319,32 +360,73 @@ static bool InitWGPU(GLFWwindow* window)
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wgpu::Adapter adapter = {};
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wgpu_preferred_fmt = (WGPUTextureFormat)surface.GetPreferredFormat(adapter);
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wgpu_surface_configuration.device = wgpu_device;
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wgpu_surface_configuration.format = wgpu_preferred_fmt;
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#else
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wgpu::InstanceDescriptor instanceDescriptor {};
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instanceDescriptor.capabilities.timedWaitAnyEnable = true;
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wgpu::Instance instance = wgpu::CreateInstance(&instanceDescriptor);
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static wgpu::Adapter localAdapter;
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wgpu::RequestAdapterOptions adapterOptions {};
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auto onRequestAdapter = [](wgpu::RequestAdapterStatus status, wgpu::Adapter adapter, wgpu::StringView message)
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{
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if (status != wgpu::RequestAdapterStatus::Success)
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{
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printf("Failed to get an adapter: %s\n", message.data);
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return;
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}
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localAdapter = std::move(adapter);
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};
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// Synchronously (wait until) acquire Adapter
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auto waitedAdapterFunc { instance.RequestAdapter(&adapterOptions, wgpu::CallbackMode::WaitAnyOnly, onRequestAdapter) };
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instance.WaitAny(waitedAdapterFunc, UINT64_MAX);
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assert(localAdapter != nullptr);
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#ifndef NDEBUG
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wgpu::AdapterInfo info;
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localAdapter.GetInfo(&info);
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printf("Using adapter: \" %s \"\n", info.device.data);
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#endif
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// Set device callback functions
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wgpu::DeviceDescriptor deviceDesc {};
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deviceDesc.SetDeviceLostCallback(wgpu::CallbackMode::AllowSpontaneous, wgpu_device_lost_callback);
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deviceDesc.SetUncapturedErrorCallback(wgpu_error_callback);
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// get device Synchronously
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wgpu_device = localAdapter.CreateDevice(&deviceDesc).MoveToCHandle();
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assert(wgpu_device != nullptr);
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wgpu::Surface surface = wgpu::glfw::CreateSurfaceForWindow(instance, window);
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if (!surface)
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return false;
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wgpu_preferred_fmt = WGPUTextureFormat_BGRA8Unorm;
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// Configure the surface.
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wgpu::SurfaceCapabilities capabilities;
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surface.GetCapabilities(localAdapter, &capabilities);
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wgpu_preferred_fmt = (WGPUTextureFormat) capabilities.formats[0];
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wgpu_surface_configuration.device = wgpu_device;
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wgpu_surface_configuration.format = wgpu_preferred_fmt;
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surface.Configure((const wgpu::SurfaceConfiguration *) &wgpu_surface_configuration);
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#endif
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wgpu_instance = instance.MoveToCHandle();
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wgpu_surface = surface.MoveToCHandle();
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wgpuDeviceSetUncapturedErrorCallback(wgpu_device, wgpu_error_callback, nullptr);
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wgpu_surface = surface.MoveToCHandle();
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wgpu_queue = wgpuDeviceGetQueue(wgpu_device);
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return true;
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}
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static void CreateSwapChain(int width, int height)
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void ResizeSurface(int width, int height)
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{
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if (wgpu_swap_chain)
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wgpuSwapChainRelease(wgpu_swap_chain);
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wgpu_swap_chain_width = width;
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wgpu_swap_chain_height = height;
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WGPUSwapChainDescriptor swap_chain_desc = {};
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swap_chain_desc.usage = WGPUTextureUsage_RenderAttachment;
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swap_chain_desc.format = wgpu_preferred_fmt;
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swap_chain_desc.width = width;
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swap_chain_desc.height = height;
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swap_chain_desc.presentMode = WGPUPresentMode_Fifo;
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wgpu_swap_chain = wgpuDeviceCreateSwapChain(wgpu_device, wgpu_surface, &swap_chain_desc);
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wgpu_surface_configuration.width = wgpu_surface_width = width;
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wgpu_surface_configuration.height = wgpu_surface_height = height;
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wgpuSurfaceConfigure(wgpu_surface, (WGPUSurfaceConfiguration *) &wgpu_surface_configuration);
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}
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2
examples/example_glfw_wgpu/web/index.html
Normal file → Executable file
2
examples/example_glfw_wgpu/web/index.html
Normal file → Executable file
|
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@ -5,7 +5,7 @@
|
|||
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"/>
|
||||
<title>Dear ImGui Emscripten+GLFW+WebGPU example</title>
|
||||
<style>
|
||||
body { margin: 0; background-color: black }
|
||||
body { margin: 0; background-color: black; overflow: hidden; }
|
||||
.emscripten {
|
||||
position: absolute;
|
||||
top: 0px;
|
||||
|
|
|
|||
117
examples/example_sdl2_wgpu/CMakeLists.txt
Executable file
117
examples/example_sdl2_wgpu/CMakeLists.txt
Executable file
|
|
@ -0,0 +1,117 @@
|
|||
# Building for desktop (WebGPU-native) with Dawn:
|
||||
# 1. git clone https://github.com/google/dawn dawn
|
||||
# 2. cmake -B build -DIMGUI_DAWN_DIR=dawn
|
||||
# 3. cmake --build build
|
||||
# The resulting binary will be found at one of the following locations:
|
||||
# * build/Debug/example_sdl2_wgpu[.exe]
|
||||
# * build/example_sdl2_wgpu[.exe]
|
||||
|
||||
# Building for Emscripten:
|
||||
# 1. Install Emscripten SDK following the instructions: https://emscripten.org/docs/getting_started/downloads.html
|
||||
# 2. Install Ninja build system
|
||||
# 3. emcmake cmake -G Ninja -B build
|
||||
# 3. cmake --build build
|
||||
# 4. emrun build/index.html
|
||||
|
||||
cmake_minimum_required(VERSION 3.10.2)
|
||||
project(imgui_example_sdl2_wgpu C CXX)
|
||||
|
||||
if(NOT CMAKE_BUILD_TYPE)
|
||||
set(CMAKE_BUILD_TYPE Debug CACHE STRING "" FORCE)
|
||||
endif()
|
||||
|
||||
set(CMAKE_CXX_STANDARD 17) # Dawn requires C++17
|
||||
|
||||
# Dear ImGui
|
||||
set(IMGUI_DIR ../../)
|
||||
|
||||
# Libraries
|
||||
if(EMSCRIPTEN)
|
||||
add_compile_options(-sDISABLE_EXCEPTION_CATCHING=1 -DIMGUI_DISABLE_FILE_FUNCTIONS=1)
|
||||
else()
|
||||
# Dawn wgpu desktop
|
||||
set(DAWN_FETCH_DEPENDENCIES ON)
|
||||
set(IMGUI_DAWN_DIR CACHE PATH "path to dawn")
|
||||
if (NOT IMGUI_DAWN_DIR)
|
||||
message(FATAL_ERROR "Please specify the Dawn repository by setting IMGUI_DAWN_DIR")
|
||||
endif()
|
||||
|
||||
option(DAWN_FETCH_DEPENDENCIES "Use fetch_dawn_dependencies.py as an alternative to using depot_tools" ON)
|
||||
|
||||
# Dawn builds many things by default - disable things we don't need
|
||||
option(DAWN_BUILD_SAMPLES "Enables building Dawn's samples" OFF)
|
||||
option(TINT_BUILD_CMD_TOOLS "Build the Tint command line tools" OFF)
|
||||
option(TINT_BUILD_DOCS "Build documentation" OFF)
|
||||
option(TINT_BUILD_TESTS "Build tests" OFF)
|
||||
if (NOT APPLE)
|
||||
option(TINT_BUILD_MSL_WRITER "Build the MSL output writer" OFF)
|
||||
endif()
|
||||
if(WIN32)
|
||||
option(TINT_BUILD_SPV_READER "Build the SPIR-V input reader" OFF)
|
||||
option(TINT_BUILD_WGSL_READER "Build the WGSL input reader" ON)
|
||||
option(TINT_BUILD_GLSL_WRITER "Build the GLSL output writer" OFF)
|
||||
option(TINT_BUILD_GLSL_VALIDATOR "Build the GLSL output validator" OFF)
|
||||
option(TINT_BUILD_SPV_WRITER "Build the SPIR-V output writer" OFF)
|
||||
option(TINT_BUILD_WGSL_WRITER "Build the WGSL output writer" ON)
|
||||
endif()
|
||||
# check if WAYLAND is the current Session Type and enable DAWN_USE_WAYLAND Wayland option @compile time
|
||||
# You can override this using: cmake -DDAWN_USE_WAYLAND=X (X = ON | OFF)
|
||||
if(UNIX)
|
||||
if ($ENV{XDG_SESSION_TYPE} MATCHES wayland)
|
||||
option(DAWN_USE_WAYLAND "Enable support for Wayland surface" ON)
|
||||
endif()
|
||||
endif()
|
||||
|
||||
add_subdirectory("${IMGUI_DAWN_DIR}" "${CMAKE_CURRENT_BINARY_DIR}/dawn" EXCLUDE_FROM_ALL)
|
||||
|
||||
find_package(SDL2 REQUIRED)
|
||||
|
||||
set(LIBRARIES webgpu_dawn webgpu_cpp)
|
||||
endif()
|
||||
|
||||
|
||||
add_executable(example_sdl2_wgpu
|
||||
main.cpp
|
||||
sdl2wgpu.cpp
|
||||
# backend files
|
||||
${IMGUI_DIR}/backends/imgui_impl_sdl2.cpp
|
||||
${IMGUI_DIR}/backends/imgui_impl_wgpu.cpp
|
||||
# Dear ImGui files
|
||||
${IMGUI_DIR}/imgui.cpp
|
||||
${IMGUI_DIR}/imgui_draw.cpp
|
||||
${IMGUI_DIR}/imgui_demo.cpp
|
||||
${IMGUI_DIR}/imgui_tables.cpp
|
||||
${IMGUI_DIR}/imgui_widgets.cpp
|
||||
)
|
||||
IF(NOT EMSCRIPTEN)
|
||||
target_compile_definitions(example_sdl2_wgpu PUBLIC
|
||||
"IMGUI_IMPL_WEBGPU_BACKEND_DAWN"
|
||||
)
|
||||
endif()
|
||||
target_include_directories(example_sdl2_wgpu PUBLIC
|
||||
${IMGUI_DIR}
|
||||
${IMGUI_DIR}/backends
|
||||
${SDL2_INCLUDE_DIRS}
|
||||
)
|
||||
|
||||
target_link_libraries(example_sdl2_wgpu PUBLIC ${LIBRARIES} ${SDL2_LIBRARIES})
|
||||
|
||||
# Emscripten settings
|
||||
if(EMSCRIPTEN)
|
||||
target_compile_options(example_sdl2_wgpu PUBLIC "-sUSE_SDL=2" )
|
||||
target_link_options(example_sdl2_wgpu PRIVATE
|
||||
"-sUSE_WEBGPU=1"
|
||||
"-sWASM=1"
|
||||
"-sALLOW_MEMORY_GROWTH=1"
|
||||
"-sNO_EXIT_RUNTIME=0"
|
||||
"-sASSERTIONS=1"
|
||||
"-sDISABLE_EXCEPTION_CATCHING=1"
|
||||
"-sNO_FILESYSTEM=1"
|
||||
"-sUSE_SDL=2"
|
||||
)
|
||||
set_target_properties(example_sdl2_wgpu PROPERTIES OUTPUT_NAME "index")
|
||||
# copy our custom index.html to build directory
|
||||
add_custom_command(TARGET example_sdl2_wgpu POST_BUILD
|
||||
COMMAND ${CMAKE_COMMAND} -E copy_if_different "${CMAKE_CURRENT_LIST_DIR}/web/index.html" $<TARGET_FILE_DIR:example_sdl2_wgpu>
|
||||
)
|
||||
endif()
|
||||
91
examples/example_sdl2_wgpu/Makefile.emscripten
Normal file
91
examples/example_sdl2_wgpu/Makefile.emscripten
Normal file
|
|
@ -0,0 +1,91 @@
|
|||
#
|
||||
# Makefile to use with emscripten
|
||||
# See https://emscripten.org/docs/getting_started/downloads.html
|
||||
# for installation instructions.
|
||||
#
|
||||
# This Makefile assumes you have loaded emscripten's environment.
|
||||
# (On Windows, you may need to execute emsdk_env.bat or encmdprompt.bat ahead)
|
||||
#
|
||||
# Running `make` will produce three files:
|
||||
# - web/index.html (current stored in the repository)
|
||||
# - web/index.js
|
||||
# - web/index.wasm
|
||||
#
|
||||
# All three are needed to run the demo.
|
||||
|
||||
CC = emcc
|
||||
CXX = em++
|
||||
WEB_DIR = web
|
||||
EXE = $(WEB_DIR)/index.js
|
||||
IMGUI_DIR = ../..
|
||||
SOURCES = main.cpp
|
||||
SOURCES += $(IMGUI_DIR)/imgui.cpp $(IMGUI_DIR)/imgui_demo.cpp $(IMGUI_DIR)/imgui_draw.cpp $(IMGUI_DIR)/imgui_tables.cpp $(IMGUI_DIR)/imgui_widgets.cpp
|
||||
SOURCES += $(IMGUI_DIR)/backends/imgui_impl_glfw.cpp $(IMGUI_DIR)/backends/imgui_impl_wgpu.cpp
|
||||
OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
|
||||
UNAME_S := $(shell uname -s)
|
||||
CPPFLAGS =
|
||||
LDFLAGS =
|
||||
EMS =
|
||||
|
||||
##---------------------------------------------------------------------
|
||||
## EMSCRIPTEN OPTIONS
|
||||
##---------------------------------------------------------------------
|
||||
|
||||
# ("EMS" options gets added to both CPPFLAGS and LDFLAGS, whereas some options are for linker only)
|
||||
EMS += -s DISABLE_EXCEPTION_CATCHING=1
|
||||
LDFLAGS += -s USE_GLFW=3 -s USE_WEBGPU=1
|
||||
LDFLAGS += -s WASM=1 -s ALLOW_MEMORY_GROWTH=1 -s NO_EXIT_RUNTIME=0 -s ASSERTIONS=1
|
||||
|
||||
# Build as single file (binary text encoded in .html file)
|
||||
#LDFLAGS += -sSINGLE_FILE
|
||||
|
||||
# Emscripten allows preloading a file or folder to be accessible at runtime.
|
||||
# The Makefile for this example project suggests embedding the misc/fonts/ folder into our application, it will then be accessible as "/fonts"
|
||||
# See documentation for more details: https://emscripten.org/docs/porting/files/packaging_files.html
|
||||
# (Default value is 0. Set to 1 to enable file-system and include the misc/fonts/ folder as part of the build.)
|
||||
USE_FILE_SYSTEM ?= 0
|
||||
ifeq ($(USE_FILE_SYSTEM), 0)
|
||||
LDFLAGS += -s NO_FILESYSTEM=1
|
||||
CPPFLAGS += -DIMGUI_DISABLE_FILE_FUNCTIONS
|
||||
endif
|
||||
ifeq ($(USE_FILE_SYSTEM), 1)
|
||||
LDFLAGS += --no-heap-copy --preload-file ../../misc/fonts@/fonts
|
||||
endif
|
||||
|
||||
##---------------------------------------------------------------------
|
||||
## FINAL BUILD FLAGS
|
||||
##---------------------------------------------------------------------
|
||||
|
||||
CPPFLAGS += -I$(IMGUI_DIR) -I$(IMGUI_DIR)/backends
|
||||
#CPPFLAGS += -g
|
||||
CPPFLAGS += -Wall -Wformat -Os $(EMS)
|
||||
#LDFLAGS += --shell-file shell_minimal.html
|
||||
LDFLAGS += $(EMS)
|
||||
|
||||
##---------------------------------------------------------------------
|
||||
## BUILD RULES
|
||||
##---------------------------------------------------------------------
|
||||
|
||||
%.o:%.cpp
|
||||
$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $<
|
||||
|
||||
%.o:$(IMGUI_DIR)/%.cpp
|
||||
$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $<
|
||||
|
||||
%.o:$(IMGUI_DIR)/backends/%.cpp
|
||||
$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $<
|
||||
|
||||
all: $(EXE)
|
||||
@echo Build complete for $(EXE)
|
||||
|
||||
$(WEB_DIR):
|
||||
mkdir $@
|
||||
|
||||
serve: all
|
||||
python3 -m http.server -d $(WEB_DIR)
|
||||
|
||||
$(EXE): $(OBJS) $(WEB_DIR)
|
||||
$(CXX) -o $@ $(OBJS) $(LDFLAGS)
|
||||
|
||||
clean:
|
||||
rm -f $(EXE) $(OBJS) $(WEB_DIR)/*.js $(WEB_DIR)/*.wasm $(WEB_DIR)/*.wasm.pre
|
||||
24
examples/example_sdl2_wgpu/README.md
Normal file
24
examples/example_sdl2_wgpu/README.md
Normal file
|
|
@ -0,0 +1,24 @@
|
|||
## How to Build
|
||||
|
||||
- You need to install Emscripten from https://emscripten.org/docs/getting_started/downloads.html, and have the environment variables set, as described in https://emscripten.org/docs/getting_started/downloads.html#installation-instructions
|
||||
|
||||
- Depending on your configuration, in Windows you may need to run `emsdk/emsdk_env.bat` in your console to access the Emscripten command-line tools.
|
||||
|
||||
- You may also refer to our [Continuous Integration setup](https://github.com/ocornut/imgui/tree/master/.github/workflows) for Emscripten setup.
|
||||
|
||||
- Then build using `make -f Makefile.emscripten` while in the `example_glfw_wgpu/` directory.
|
||||
|
||||
- Requires recent Emscripten as WGPU is still a work-in-progress API.
|
||||
|
||||
## How to Run
|
||||
|
||||
To run on a local machine:
|
||||
- Make sure your browse supports WGPU and it is enabled. WGPU is still WIP not enabled by default in most browser.
|
||||
- `make serve` will use Python3 to spawn a local webserver, you can then browse http://localhost:8000 to access your build.
|
||||
- Otherwise, generally you will need a local webserver:
|
||||
- Quoting [https://emscripten.org/docs/getting_started](https://emscripten.org/docs/getting_started/Tutorial.html#generating-html):<br>
|
||||
_"Unfortunately several browsers (including Chrome, Safari, and Internet Explorer) do not support file:// [XHR](https://emscripten.org/docs/site/glossary.html#term-xhr) requests, and can’t load extra files needed by the HTML (like a .wasm file, or packaged file data as mentioned lower down). For these browsers you’ll need to serve the files using a [local webserver](https://emscripten.org/docs/getting_started/FAQ.html#faq-local-webserver) and then open http://localhost:8000/hello.html."_
|
||||
- Emscripten SDK has a handy `emrun` command: `emrun web/example_glfw_wgpu.html --browser firefox` which will spawn a temporary local webserver (in Firefox). See https://emscripten.org/docs/compiling/Running-html-files-with-emrun.html for details.
|
||||
- You may use Python 3 builtin webserver: `python -m http.server -d web` (this is what `make serve` uses).
|
||||
- You may use Python 2 builtin webserver: `cd web && python -m SimpleHTTPServer`.
|
||||
- If you are accessing the files over a network, certain browsers, such as Firefox, will restrict Gamepad API access to secure contexts only (e.g. https only).
|
||||
429
examples/example_sdl2_wgpu/main.cpp
Executable file
429
examples/example_sdl2_wgpu/main.cpp
Executable file
|
|
@ -0,0 +1,429 @@
|
|||
// Dear ImGui: standalone example application for using GLFW + WebGPU
|
||||
// - Emscripten is supported for publishing on web. See https://emscripten.org.
|
||||
// - Dawn is used as a WebGPU implementation on desktop.
|
||||
|
||||
// Learn about Dear ImGui:
|
||||
// - FAQ https://dearimgui.com/faq
|
||||
// - Getting Started https://dearimgui.com/getting-started
|
||||
// - Documentation https://dearimgui.com/docs (same as your local docs/ folder).
|
||||
// - Introduction, links and more at the top of imgui.cpp
|
||||
|
||||
|
||||
#include "imgui.h"
|
||||
#include "imgui_impl_sdl2.h"
|
||||
#include "imgui_impl_wgpu.h"
|
||||
#include <stdio.h>
|
||||
|
||||
#ifdef __EMSCRIPTEN__
|
||||
#include <emscripten.h>
|
||||
#include <emscripten/html5.h>
|
||||
#include <emscripten/html5_webgpu.h>
|
||||
#else
|
||||
#endif
|
||||
#define SDL_MAIN_HANDLED
|
||||
#include "sdl2wgpu.h"
|
||||
|
||||
#include <webgpu/webgpu.h>
|
||||
#include <webgpu/webgpu_cpp.h>
|
||||
|
||||
// This example can also compile and run with Emscripten! See 'Makefile.emscripten' for details.
|
||||
#ifdef __EMSCRIPTEN__
|
||||
#include "../libs/emscripten/emscripten_mainloop_stub.h"
|
||||
#endif
|
||||
|
||||
// Global WebGPU required states
|
||||
static WGPUInstance wgpu_instance = nullptr;
|
||||
static WGPUDevice wgpu_device = nullptr;
|
||||
static WGPUSurface wgpu_surface = nullptr;
|
||||
static WGPUQueue wgpu_queue = nullptr;
|
||||
static WGPUTextureFormat wgpu_preferred_fmt = WGPUTextureFormat_Undefined; // acquired from SurfaceCapabilities
|
||||
static WGPUSurfaceConfiguration wgpu_surface_configuration {};
|
||||
static int wgpu_surface_width = 1280;
|
||||
static int wgpu_surface_height = 720;
|
||||
|
||||
// Forward declarations
|
||||
static bool InitWGPU(SDL_Window* window);
|
||||
static void ResizeSurface(int width, int height);
|
||||
|
||||
#ifndef __EMSCRIPTEN__
|
||||
static void wgpu_device_lost_callback(const wgpu::Device&, wgpu::DeviceLostReason reason, wgpu::StringView message)
|
||||
{
|
||||
const char* reasonName = "";
|
||||
switch (reason)
|
||||
{
|
||||
case wgpu::DeviceLostReason::Unknown: reasonName = "Unknown"; break;
|
||||
case wgpu::DeviceLostReason::Destroyed: reasonName = "Destroyed"; break;
|
||||
case wgpu::DeviceLostReason::CallbackCancelled: reasonName = "InstanceDropped"; break;
|
||||
case wgpu::DeviceLostReason::FailedCreation: reasonName = "FailedCreation"; break;
|
||||
default: reasonName = "UNREACHABLE"; break;
|
||||
}
|
||||
printf("%s device message: %s\n", reasonName, message.data);
|
||||
}
|
||||
|
||||
static void wgpu_error_callback(const wgpu::Device&, wgpu::ErrorType type, wgpu::StringView message)
|
||||
{
|
||||
const char* errorTypeName = "";
|
||||
switch (type)
|
||||
{
|
||||
case wgpu::ErrorType::Validation: errorTypeName = "Validation"; break;
|
||||
case wgpu::ErrorType::OutOfMemory: errorTypeName = "Out of memory"; break;
|
||||
case wgpu::ErrorType::Unknown: errorTypeName = "Unknown"; break;
|
||||
case wgpu::ErrorType::Internal: errorTypeName = "Internal"; break;
|
||||
default: errorTypeName = "UNREACHABLE"; break;
|
||||
}
|
||||
printf("%s error: %s\n", errorTypeName, message.data);
|
||||
}
|
||||
#endif
|
||||
|
||||
static WGPUTexture check_surface_texture_status(SDL_Window* window)
|
||||
{
|
||||
WGPUSurfaceTexture surfaceTexture;
|
||||
wgpuSurfaceGetCurrentTexture(wgpu_surface, &surfaceTexture);
|
||||
|
||||
switch ( surfaceTexture.status )
|
||||
{
|
||||
#if !defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN)
|
||||
case WGPUSurfaceGetCurrentTextureStatus_Success:
|
||||
break;
|
||||
#else
|
||||
case WGPUSurfaceGetCurrentTextureStatus_SuccessOptimal:
|
||||
break;
|
||||
case WGPUSurfaceGetCurrentTextureStatus_SuccessSuboptimal:
|
||||
#endif
|
||||
case WGPUSurfaceGetCurrentTextureStatus_Timeout:
|
||||
case WGPUSurfaceGetCurrentTextureStatus_Outdated:
|
||||
case WGPUSurfaceGetCurrentTextureStatus_Lost:
|
||||
// if the status is NOT optimal let's try to reconfigure the surface
|
||||
{
|
||||
#ifndef NDEBUG
|
||||
printf("Bad surface texture status: %d\n", surfaceTexture.status);
|
||||
#endif
|
||||
/* if (surfaceTexture.texture)
|
||||
wgpuTextureRelease(surfaceTexture.texture);*/
|
||||
int width, height;
|
||||
SDL_GetWindowSize(window, &width, &height);
|
||||
if ( width > 0 && height > 0 )
|
||||
{
|
||||
wgpu_surface_configuration.width = width;
|
||||
wgpu_surface_configuration.height = height;
|
||||
|
||||
wgpuSurfaceConfigure(wgpu_surface, &wgpu_surface_configuration);
|
||||
}
|
||||
return nullptr;
|
||||
}
|
||||
default: // should never be reached
|
||||
assert(!"Unexpected Surface Texture status error\n");
|
||||
return nullptr;
|
||||
}
|
||||
return surfaceTexture.texture;
|
||||
}
|
||||
|
||||
// Main code
|
||||
int main(int, char**)
|
||||
{
|
||||
|
||||
#if defined(__linux__)
|
||||
// it's necessary to specify "x11" or "wayland": default is "x11" it works also in wayland
|
||||
// or comment the follow line and export SDL_VIDEODRIVER environment variable:
|
||||
SDL_SetHint(SDL_HINT_VIDEODRIVER, "x11"); // export SDL_VIDEODRIVER=wayland (to set wayland session type)
|
||||
// export SDL_VIDEODRIVER=$XDG_SESSION_TYPE (to get current session type: x11 | wayland)
|
||||
#endif
|
||||
|
||||
// Init SDL
|
||||
SDL_Init(SDL_INIT_VIDEO);
|
||||
SDL_Window *window = SDL_CreateWindow("Dear ImGui SDL+WebGPU example", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, wgpu_surface_width, wgpu_surface_height, SDL_WINDOW_RESIZABLE);
|
||||
|
||||
// Initialize WGPU
|
||||
InitWGPU(window);
|
||||
|
||||
// Setup Dear ImGui context
|
||||
IMGUI_CHECKVERSION();
|
||||
ImGui::CreateContext();
|
||||
ImGuiIO& io = ImGui::GetIO(); (void)io;
|
||||
io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
|
||||
io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls
|
||||
|
||||
// Setup Dear ImGui style
|
||||
ImGui::StyleColorsDark();
|
||||
//ImGui::StyleColorsLight();
|
||||
|
||||
// Setup Platform/Renderer backends
|
||||
ImGui_ImplSDL2_InitForOther(window);
|
||||
|
||||
ImGui_ImplWGPU_InitInfo init_info;
|
||||
init_info.Device = wgpu_device;
|
||||
init_info.NumFramesInFlight = 3;
|
||||
init_info.RenderTargetFormat = wgpu_preferred_fmt;
|
||||
init_info.DepthStencilFormat = WGPUTextureFormat_Undefined;
|
||||
ImGui_ImplWGPU_Init(&init_info);
|
||||
|
||||
// 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.
|
||||
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
|
||||
// - If the file cannot be loaded, the function will return a nullptr. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
|
||||
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
|
||||
// - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use Freetype for higher quality font rendering.
|
||||
// - Read 'docs/FONTS.md' for more instructions and details.
|
||||
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
|
||||
// - Emscripten allows preloading a file or folder to be accessible at runtime. See Makefile for details.
|
||||
//io.Fonts->AddFontDefault();
|
||||
#ifndef IMGUI_DISABLE_FILE_FUNCTIONS
|
||||
//io.Fonts->AddFontFromFileTTF("fonts/segoeui.ttf", 18.0f);
|
||||
//io.Fonts->AddFontFromFileTTF("fonts/DroidSans.ttf", 16.0f);
|
||||
//io.Fonts->AddFontFromFileTTF("fonts/Roboto-Medium.ttf", 16.0f);
|
||||
//io.Fonts->AddFontFromFileTTF("fonts/Cousine-Regular.ttf", 15.0f);
|
||||
//io.Fonts->AddFontFromFileTTF("fonts/ProggyTiny.ttf", 10.0f);
|
||||
//ImFont* font = io.Fonts->AddFontFromFileTTF("fonts/ArialUni.ttf", 18.0f, nullptr, io.Fonts->GetGlyphRangesJapanese());
|
||||
//IM_ASSERT(font != nullptr);
|
||||
#endif
|
||||
|
||||
// Our state
|
||||
bool show_demo_window = true;
|
||||
bool show_another_window = false;
|
||||
ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
|
||||
|
||||
SDL_Event event;
|
||||
bool canCloseWindow = false;
|
||||
// Main loop
|
||||
#ifdef __EMSCRIPTEN__
|
||||
// For an Emscripten build we are disabling file-system access, so let's not attempt to do a fopen() of the imgui.ini file.
|
||||
// You may manually call LoadIniSettingsFromMemory() to load settings from your own storage.
|
||||
io.IniFilename = nullptr;
|
||||
EMSCRIPTEN_MAINLOOP_BEGIN
|
||||
#else
|
||||
while (!canCloseWindow)
|
||||
#endif
|
||||
{
|
||||
while (SDL_PollEvent(&event))
|
||||
{
|
||||
ImGui_ImplSDL2_ProcessEvent(&event);
|
||||
if (event.type == SDL_QUIT ||
|
||||
(event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE &&
|
||||
event.window.windowID == SDL_GetWindowID(window)))
|
||||
canCloseWindow = true;
|
||||
}
|
||||
// Poll and handle events (inputs, window resize, etc.)
|
||||
// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
|
||||
// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
|
||||
// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
|
||||
// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
|
||||
|
||||
// React to changes in screen size
|
||||
int width, height;
|
||||
SDL_GetWindowSize(window, &width, &height);
|
||||
if (width != wgpu_surface_width || height != wgpu_surface_height)
|
||||
{
|
||||
ImGui_ImplWGPU_InvalidateDeviceObjects();
|
||||
ResizeSurface(width, height);
|
||||
ImGui_ImplWGPU_CreateDeviceObjects();
|
||||
//continue;
|
||||
}
|
||||
|
||||
// Check surface texture status
|
||||
WGPUTexture texture = check_surface_texture_status(window);
|
||||
if(!texture) continue;
|
||||
|
||||
// Start the Dear ImGui frame
|
||||
ImGui_ImplWGPU_NewFrame();
|
||||
ImGui_ImplSDL2_NewFrame();
|
||||
ImGui::NewFrame();
|
||||
|
||||
// 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
|
||||
if (show_demo_window)
|
||||
ImGui::ShowDemoWindow(&show_demo_window);
|
||||
|
||||
// 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
|
||||
{
|
||||
static float f = 0.0f;
|
||||
static int counter = 0;
|
||||
|
||||
ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
|
||||
|
||||
ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
|
||||
ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
|
||||
ImGui::Checkbox("Another Window", &show_another_window);
|
||||
|
||||
ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
|
||||
ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
|
||||
|
||||
if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
|
||||
counter++;
|
||||
ImGui::SameLine();
|
||||
ImGui::Text("counter = %d", counter);
|
||||
|
||||
ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate);
|
||||
ImGui::End();
|
||||
}
|
||||
|
||||
// 3. Show another simple window.
|
||||
if (show_another_window)
|
||||
{
|
||||
ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
|
||||
ImGui::Text("Hello from another window!");
|
||||
if (ImGui::Button("Close Me"))
|
||||
show_another_window = false;
|
||||
ImGui::End();
|
||||
}
|
||||
|
||||
// Rendering
|
||||
ImGui::Render();
|
||||
|
||||
WGPUTextureViewDescriptor viewDescriptor {};
|
||||
viewDescriptor.format = wgpu_preferred_fmt;
|
||||
viewDescriptor.dimension = WGPUTextureViewDimension_2D;
|
||||
viewDescriptor.mipLevelCount = WGPU_MIP_LEVEL_COUNT_UNDEFINED;
|
||||
viewDescriptor.arrayLayerCount = WGPU_ARRAY_LAYER_COUNT_UNDEFINED;
|
||||
viewDescriptor.aspect = WGPUTextureAspect_All;
|
||||
|
||||
WGPUTextureView textureView = wgpuTextureCreateView(texture, &viewDescriptor);
|
||||
|
||||
WGPURenderPassColorAttachment color_attachments {};
|
||||
color_attachments.depthSlice = WGPU_DEPTH_SLICE_UNDEFINED;
|
||||
color_attachments.loadOp = WGPULoadOp_Clear;
|
||||
color_attachments.storeOp = WGPUStoreOp_Store;
|
||||
color_attachments.clearValue = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w };
|
||||
color_attachments.view = textureView;
|
||||
|
||||
WGPURenderPassDescriptor render_pass_desc {};
|
||||
render_pass_desc.colorAttachmentCount = 1;
|
||||
render_pass_desc.colorAttachments = &color_attachments;
|
||||
render_pass_desc.depthStencilAttachment = nullptr;
|
||||
|
||||
WGPUCommandEncoderDescriptor enc_desc {};
|
||||
WGPUCommandEncoder encoder = wgpuDeviceCreateCommandEncoder(wgpu_device, &enc_desc);
|
||||
|
||||
WGPURenderPassEncoder pass = wgpuCommandEncoderBeginRenderPass(encoder, &render_pass_desc);
|
||||
ImGui_ImplWGPU_RenderDrawData(ImGui::GetDrawData(), pass);
|
||||
wgpuRenderPassEncoderEnd(pass);
|
||||
|
||||
WGPUCommandBufferDescriptor cmd_buffer_desc {};
|
||||
WGPUCommandBuffer cmd_buffer = wgpuCommandEncoderFinish(encoder, &cmd_buffer_desc);
|
||||
wgpuQueueSubmit(wgpu_queue, 1, &cmd_buffer);
|
||||
|
||||
#ifndef __EMSCRIPTEN__
|
||||
wgpuSurfacePresent(wgpu_surface);
|
||||
// Tick needs to be called in Dawn to display validation errors
|
||||
wgpuDeviceTick(wgpu_device);
|
||||
#endif
|
||||
wgpuTextureViewRelease(textureView);
|
||||
wgpuRenderPassEncoderRelease(pass);
|
||||
wgpuCommandEncoderRelease(encoder);
|
||||
wgpuCommandBufferRelease(cmd_buffer);
|
||||
}
|
||||
#ifdef __EMSCRIPTEN__
|
||||
EMSCRIPTEN_MAINLOOP_END;
|
||||
#endif
|
||||
|
||||
// Cleanup
|
||||
ImGui_ImplWGPU_Shutdown();
|
||||
ImGui_ImplSDL2_Shutdown();
|
||||
ImGui::DestroyContext();
|
||||
|
||||
wgpuSurfaceUnconfigure(wgpu_surface);
|
||||
wgpuSurfaceRelease(wgpu_surface);
|
||||
wgpuQueueRelease(wgpu_queue);
|
||||
wgpuDeviceRelease(wgpu_device);
|
||||
wgpuInstanceRelease(wgpu_instance);
|
||||
#ifndef __EMSCRIPTEN__
|
||||
// wait to flush all WGPU operations before to continue
|
||||
wgpuDeviceTick(wgpu_device);
|
||||
#endif
|
||||
|
||||
// Terminate SDL
|
||||
SDL_DestroyWindow(window);
|
||||
SDL_Quit();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static bool InitWGPU(SDL_Window* window)
|
||||
{
|
||||
static wgpu::Adapter localAdapter;
|
||||
|
||||
wgpu_surface_configuration.presentMode = WGPUPresentMode_Fifo;
|
||||
wgpu_surface_configuration.alphaMode = WGPUCompositeAlphaMode_Auto;
|
||||
wgpu_surface_configuration.usage = WGPUTextureUsage_RenderAttachment;
|
||||
wgpu_surface_configuration.width = wgpu_surface_width;
|
||||
wgpu_surface_configuration.height = wgpu_surface_height;
|
||||
|
||||
#ifdef __EMSCRIPTEN__
|
||||
wgpu::Instance instance = wgpuCreateInstance(nullptr);
|
||||
wgpu_device = emscripten_webgpu_get_device();
|
||||
if (!wgpu_device)
|
||||
return false;
|
||||
wgpu::SurfaceDescriptorFromCanvasHTMLSelector html_surface_desc = {};
|
||||
html_surface_desc.selector = "#canvas";
|
||||
wgpu::SurfaceDescriptor surface_desc = {};
|
||||
surface_desc.nextInChain = &html_surface_desc;
|
||||
wgpu::Surface surface = instance.CreateSurface(&surface_desc);
|
||||
|
||||
wgpu::Adapter adapter = {};
|
||||
wgpu_preferred_fmt = (WGPUTextureFormat)surface.GetPreferredFormat(adapter);
|
||||
|
||||
wgpu_surface_configuration.device = wgpu_device;
|
||||
wgpu_surface_configuration.format = wgpu_preferred_fmt;
|
||||
#else
|
||||
wgpu::InstanceDescriptor instanceDescriptor {};
|
||||
instanceDescriptor.capabilities.timedWaitAnyEnable = true;
|
||||
wgpu::Instance instance = wgpu::CreateInstance(&instanceDescriptor);
|
||||
|
||||
wgpu::RequestAdapterOptions adapterOptions {};
|
||||
|
||||
auto onRequestAdapter = [](wgpu::RequestAdapterStatus status, wgpu::Adapter adapter, wgpu::StringView message)
|
||||
{
|
||||
if (status != wgpu::RequestAdapterStatus::Success)
|
||||
{
|
||||
printf("Failed to get an adapter: %s\n", message.data);
|
||||
return;
|
||||
}
|
||||
localAdapter = std::move(adapter);
|
||||
};
|
||||
|
||||
// Synchronously (wait until) acquire Adapter
|
||||
auto waitedAdapterFunc { instance.RequestAdapter(&adapterOptions, wgpu::CallbackMode::WaitAnyOnly, onRequestAdapter) };
|
||||
instance.WaitAny(waitedAdapterFunc, UINT64_MAX);
|
||||
assert(localAdapter != nullptr);
|
||||
|
||||
#ifndef NDEBUG
|
||||
wgpu::AdapterInfo info;
|
||||
localAdapter.GetInfo(&info);
|
||||
printf("Using adapter: \" %s \"\n", info.device.data);
|
||||
#endif
|
||||
|
||||
// Set device callback functions
|
||||
wgpu::DeviceDescriptor deviceDesc {};
|
||||
deviceDesc.SetDeviceLostCallback(wgpu::CallbackMode::AllowSpontaneous, wgpu_device_lost_callback);
|
||||
deviceDesc.SetUncapturedErrorCallback(wgpu_error_callback);
|
||||
|
||||
// get device Synchronously
|
||||
wgpu_device = localAdapter.CreateDevice(&deviceDesc).MoveToCHandle();
|
||||
assert(wgpu_device != nullptr);
|
||||
|
||||
wgpu::Surface surface = SDL_getWGPUSurface(instance.Get(), window);
|
||||
if (!surface)
|
||||
return false;
|
||||
|
||||
// Configure the surface.
|
||||
wgpu::SurfaceCapabilities capabilities;
|
||||
surface.GetCapabilities(localAdapter, &capabilities);
|
||||
wgpu_preferred_fmt = (WGPUTextureFormat) capabilities.formats[0];
|
||||
|
||||
wgpu_surface_configuration.device = wgpu_device;
|
||||
wgpu_surface_configuration.format = wgpu_preferred_fmt;
|
||||
surface.Configure((const wgpu::SurfaceConfiguration *) &wgpu_surface_configuration);
|
||||
#endif
|
||||
|
||||
wgpu_instance = instance.MoveToCHandle();
|
||||
wgpu_surface = surface.MoveToCHandle();
|
||||
wgpu_queue = wgpuDeviceGetQueue(wgpu_device);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void ResizeSurface(int width, int height)
|
||||
{
|
||||
wgpu_surface_configuration.width = wgpu_surface_width = width;
|
||||
wgpu_surface_configuration.height = wgpu_surface_height = height;
|
||||
|
||||
wgpuSurfaceConfigure( wgpu_surface, (WGPUSurfaceConfiguration *) &wgpu_surface_configuration );
|
||||
}
|
||||
92
examples/example_sdl2_wgpu/sdl2wgpu.cpp
Executable file
92
examples/example_sdl2_wgpu/sdl2wgpu.cpp
Executable file
|
|
@ -0,0 +1,92 @@
|
|||
//------------------------------------------------------------------------------
|
||||
// Copyright (c) 2025 Michele Morrone
|
||||
// All rights reserved.
|
||||
//
|
||||
// https://michelemorrone.eu - https://brutpitt.com
|
||||
//
|
||||
// X: https://x.com/BrutPitt - GitHub: https://github.com/BrutPitt
|
||||
//
|
||||
// direct mail: brutpitt(at)gmail.com - me(at)michelemorrone.eu
|
||||
//
|
||||
// This software is distributed under the terms of the BSD 2-Clause license
|
||||
//------------------------------------------------------------------------------
|
||||
#include "sdl2wgpu.h"
|
||||
|
||||
#include <webgpu/webgpu.h>
|
||||
|
||||
#include <SDL.h>
|
||||
#include <SDL_syswm.h>
|
||||
|
||||
#ifdef SDL_VIDEO_DRIVER_COCOA
|
||||
#include <Cocoa/Cocoa.h>
|
||||
#include <QuartzCore/CAMetalLayer.h>
|
||||
#endif
|
||||
|
||||
|
||||
WGPUSurface SDL_getWGPUSurface(WGPUInstance instance, SDL_Window* window)
|
||||
{
|
||||
WGPUSurfaceDescriptor surfaceDescriptor {};
|
||||
WGPUChainedStruct chainedStruct {};
|
||||
#ifdef __EMSCRIPTEN__
|
||||
chainedStruct.sType = WGPUSType_SurfaceDescriptorFromCanvasHTMLSelector;
|
||||
WGPUSurfaceDescriptorFromCanvasHTMLSelector surfaceSourceDesc = { chainedStruct, "canvas" };
|
||||
surfaceDescriptor.nextInChain = &surfaceSourceDesc.chain;
|
||||
/*
|
||||
// not used in EMSCRIPTEN (yet), but in DAWN EMSCRIPTEN fork emdawnwebgpu: https://dawn.googlesource.com/dawn/+/refs/heads/main/src/emdawnwebgpu/
|
||||
chainedStruct.sType = WGPUSType_EmscriptenSurfaceSourceCanvasHTMLSelector;
|
||||
const WGPUEmscriptenSurfaceSourceCanvasHTMLSelector surfaceSourceDesc = { chainedStruct, "canvas" };
|
||||
surfaceDescriptor.nextInChain = &surfaceSourceDesc.chain;
|
||||
*/
|
||||
#else
|
||||
SDL_SysWMinfo sysWMInfo;
|
||||
SDL_VERSION(&sysWMInfo.version);
|
||||
SDL_GetWindowWMInfo(window, &sysWMInfo);
|
||||
|
||||
#if defined(unix) || defined(__unix__)
|
||||
// if not specified SDL_getWGPUSurface prefers always X11, also on Wayland
|
||||
// to use Wayland is necessary to specify it in SDL_VIDEODRIVER:
|
||||
// ==> or (inside code) use 'SDL_SetHint(SDL_HINT_VIDEODRIVER, "wayland");' before 'SDL_Init'
|
||||
// ==> or (outside code) export SDL_VIDEODRIVER=wayland environment variable, or
|
||||
// export SDL_VIDEODRIVER=$XDG_SESSION_TYPE to get current session type
|
||||
const char *vidDrv = SDL_GetHint(SDL_HINT_VIDEODRIVER);
|
||||
|
||||
if(vidDrv != nullptr && (tolower(vidDrv[0])=='w' && tolower(vidDrv[1])=='a' && tolower(vidDrv[2])=='y' &&
|
||||
tolower(vidDrv[3])=='l' && tolower(vidDrv[4])=='a' && tolower(vidDrv[5])=='n' && tolower(vidDrv[6])=='d')) { // wayland
|
||||
#if defined(SDL_VIDEO_DRIVER_WAYLAND) // check also if the cmake option DAWN_USE_WAYLAND=ON was set (if you get: "surface not supported")
|
||||
chainedStruct.sType = WGPUSType_SurfaceSourceWaylandSurface;
|
||||
WGPUSurfaceSourceWaylandSurface surfaceSourceDesc { chainedStruct , sysWMInfo.info.wl.display, sysWMInfo.info.wl.surface };
|
||||
surfaceDescriptor.nextInChain = &surfaceSourceDesc.chain;
|
||||
#else
|
||||
#error "Wayland session, but SDL_VIDEO_DRIVER_WAYLAND missing"
|
||||
#endif
|
||||
} else { // Wayland
|
||||
#if defined(SDL_VIDEO_DRIVER_X11)
|
||||
chainedStruct.sType = WGPUSType_SurfaceSourceXlibWindow;
|
||||
WGPUSurfaceDescriptorFromXlibWindow surfaceSourceDesc { chainedStruct , sysWMInfo.info.x11.display, sysWMInfo.info.x11.window };
|
||||
surfaceDescriptor.nextInChain = &surfaceSourceDesc.chain;
|
||||
#else
|
||||
#error "X11 session, but SDL_VIDEO_DRIVER_X11 missing"
|
||||
#endif
|
||||
}
|
||||
#elif defined(SDL_VIDEO_DRIVER_WINDOWS)
|
||||
chainedStruct.sType = WGPUSType_SurfaceSourceWindowsHWND;
|
||||
WGPUSurfaceSourceWindowsHWND surfaceSourceDesc { chainedStruct , sysWMInfo.info.win.hinstance, sysWMInfo.info.win.window };
|
||||
surfaceDescriptor.nextInChain = &surfaceSourceDesc.chain;
|
||||
#elif defined(SDL_VIDEO_DRIVER_COCOA)
|
||||
id metal_layer = [CAMetalLayer layer];
|
||||
NSWindow *ns_window = sysWMInfo.info.cocoa.window;
|
||||
[ns_window.contentView setWantsLayer:YES];
|
||||
[ns_window.contentView setLayer:metal_layer];
|
||||
|
||||
chainedStruct.sType = WGPUSType_SurfaceSourceMetalLayer;
|
||||
WGPUSurfaceSourceMetalLayer surfaceSourceDesc { chainedStruct , metal_layer };
|
||||
surfaceDescriptor.nextInChain = &surfaceSourceDesc.chain;
|
||||
#else
|
||||
#error "Unsupported WGPU Backend"
|
||||
#endif
|
||||
#endif
|
||||
return wgpuInstanceCreateSurface(instance, &surfaceDescriptor);
|
||||
|
||||
}
|
||||
|
||||
|
||||
24
examples/example_sdl2_wgpu/sdl2wgpu.h
Executable file
24
examples/example_sdl2_wgpu/sdl2wgpu.h
Executable file
|
|
@ -0,0 +1,24 @@
|
|||
//------------------------------------------------------------------------------
|
||||
// Copyright (c) 2018-2025 Michele Morrone
|
||||
// All rights reserved.
|
||||
//
|
||||
// https://michelemorrone.eu - https://brutpitt.com
|
||||
//
|
||||
// X: https://x.com/BrutPitt - GitHub: https://github.com/BrutPitt
|
||||
//
|
||||
// direct mail: brutpitt(at)gmail.com - me(at)michelemorrone.eu
|
||||
//
|
||||
// This software is distributed under the terms of the BSD 2-Clause license
|
||||
//------------------------------------------------------------------------------
|
||||
#pragma once
|
||||
#include <webgpu/webgpu.h>
|
||||
#include <SDL.h>
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
WGPUSurface SDL_getWGPUSurface(WGPUInstance instance, SDL_Window* window);
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
84
examples/example_sdl2_wgpu/web/index.html
Executable file
84
examples/example_sdl2_wgpu/web/index.html
Executable file
|
|
@ -0,0 +1,84 @@
|
|||
<!doctype html>
|
||||
<html lang="en-us">
|
||||
<head>
|
||||
<meta charset="utf-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"/>
|
||||
<title>Dear ImGui Emscripten+GLFW+WebGPU example</title>
|
||||
<style>
|
||||
body { margin: 0; background-color: black; overflow: hidden; }
|
||||
.emscripten {
|
||||
position: absolute;
|
||||
top: 0px;
|
||||
left: 0px;
|
||||
margin: 0px;
|
||||
border: 0;
|
||||
width: 100%;
|
||||
height: 100%;
|
||||
overflow: hidden;
|
||||
display: block;
|
||||
image-rendering: optimizeSpeed;
|
||||
image-rendering: -moz-crisp-edges;
|
||||
image-rendering: -o-crisp-edges;
|
||||
image-rendering: -webkit-optimize-contrast;
|
||||
image-rendering: optimize-contrast;
|
||||
image-rendering: crisp-edges;
|
||||
image-rendering: pixelated;
|
||||
-ms-interpolation-mode: nearest-neighbor;
|
||||
}
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<canvas class="emscripten" id="canvas" oncontextmenu="event.preventDefault()"></canvas>
|
||||
<script type='text/javascript'>
|
||||
var Module;
|
||||
(async () => {
|
||||
Module = {
|
||||
preRun: [],
|
||||
postRun: [],
|
||||
print: (function() {
|
||||
return function(text) {
|
||||
text = Array.prototype.slice.call(arguments).join(' ');
|
||||
console.log(text);
|
||||
};
|
||||
})(),
|
||||
printErr: function(text) {
|
||||
text = Array.prototype.slice.call(arguments).join(' ');
|
||||
console.error(text);
|
||||
},
|
||||
canvas: (function() {
|
||||
var canvas = document.getElementById('canvas');
|
||||
//canvas.addEventListener("webglcontextlost", function(e) { alert('FIXME: WebGL context lost, please reload the page'); e.preventDefault(); }, false);
|
||||
return canvas;
|
||||
})(),
|
||||
setStatus: function(text) {
|
||||
console.log("status: " + text);
|
||||
},
|
||||
monitorRunDependencies: function(left) {
|
||||
// no run dependencies to log
|
||||
}
|
||||
};
|
||||
window.onerror = function() {
|
||||
console.log("onerror: " + event);
|
||||
};
|
||||
|
||||
// Initialize the graphics adapter
|
||||
{
|
||||
if (!navigator.gpu) {
|
||||
throw Error("WebGPU not supported.");
|
||||
}
|
||||
|
||||
const adapter = await navigator.gpu.requestAdapter();
|
||||
const device = await adapter.requestDevice();
|
||||
Module.preinitializedWebGPUDevice = device;
|
||||
}
|
||||
|
||||
{
|
||||
const js = document.createElement('script');
|
||||
js.async = true;
|
||||
js.src = "index.js";
|
||||
document.body.appendChild(js);
|
||||
}
|
||||
})();
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
Loading…
Add table
Reference in a new issue