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Examples: SDL3+SDL_GPU: use SDL_GPU_PRESENTMODE_MAILBOX swapchain parameters.

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ocornut 2025-01-22 10:22:31 +01:00
parent bf13442c7c
commit 3e6bdc2242
1 changed files with 5 additions and 3 deletions
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8
examples/example_sdl3_sdlgpu3/main.cpp
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@ -7,7 +7,7 @@
// - Introduction, links and more at the top of imgui.cpp // - Introduction, links and more at the top of imgui.cpp
// Important note to the reader who wish to integrate imgui_impl_sdlgpu3.cpp/.h in their own engine/app. // Important note to the reader who wish to integrate imgui_impl_sdlgpu3.cpp/.h in their own engine/app.
// - Unline other backends, the user must call the function Imgui_ImplSDLGPU_PrepareDrawData BEFORE issuing a SDL_GPURenderPass containing ImGui_ImplSDLGPU_RenderDrawData. // - Unlike other backends, the user must call the function Imgui_ImplSDLGPU_PrepareDrawData() BEFORE issuing a SDL_GPURenderPass containing ImGui_ImplSDLGPU_RenderDrawData.
// Calling the function is MANDATORY, otherwise the ImGui will not upload neither the vertex nor the index buffer for the GPU. See imgui_impl_sdlgpu3.cpp for more info. // Calling the function is MANDATORY, otherwise the ImGui will not upload neither the vertex nor the index buffer for the GPU. See imgui_impl_sdlgpu3.cpp for more info.
#include "imgui.h" #include "imgui.h"
@ -54,6 +54,7 @@ int main(int, char**)
printf("Error: SDL_ClaimWindowForGPUDevice(): %s\n", SDL_GetError()); printf("Error: SDL_ClaimWindowForGPUDevice(): %s\n", SDL_GetError());
return -1; return -1;
} }
SDL_SetGPUSwapchainParameters(gpu_device, window, SDL_GPU_SWAPCHAINCOMPOSITION_SDR, SDL_GPU_PRESENTMODE_MAILBOX);
// Setup Dear ImGui context // Setup Dear ImGui context
IMGUI_CHECKVERSION(); IMGUI_CHECKVERSION();
@ -140,7 +141,7 @@ int main(int, char**)
ImGui::Checkbox("Another Window", &show_another_window); 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::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 ImGui::ColorEdit4("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) if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
counter++; counter++;
@ -179,7 +180,7 @@ int main(int, char**)
// Setup and start a render pass // Setup and start a render pass
SDL_GPUColorTargetInfo target_info = {}; SDL_GPUColorTargetInfo target_info = {};
target_info.texture = swapchain_texture; target_info.texture = swapchain_texture;
target_info.clear_color = SDL_FColor{ clear_color.x,clear_color.y,clear_color.z,clear_color.w }; target_info.clear_color = SDL_FColor { clear_color.x, clear_color.y, clear_color.z, clear_color.w };
target_info.load_op = SDL_GPU_LOADOP_CLEAR; target_info.load_op = SDL_GPU_LOADOP_CLEAR;
target_info.store_op = SDL_GPU_STOREOP_STORE; target_info.store_op = SDL_GPU_STOREOP_STORE;
target_info.mip_level = 0; target_info.mip_level = 0;
@ -196,6 +197,7 @@ int main(int, char**)
// Submit the command buffer // Submit the command buffer
SDL_SubmitGPUCommandBuffer(command_buffer); SDL_SubmitGPUCommandBuffer(command_buffer);
} }
// Cleanup // Cleanup
SDL_WaitForGPUIdle(gpu_device); SDL_WaitForGPUIdle(gpu_device);
ImGui_ImplSDL3_Shutdown(); ImGui_ImplSDL3_Shutdown();