Sergio Valor
00a5875c92
- Infraestructura GPU: GpuContext, GpuPipeline, GpuSpriteBatch, GpuTexture - Engine::render() migrat a 2-pass: sprites → offscreen R8G8B8A8 → swapchain + vignette - UI/text via software renderer (SDL3_ttf) + upload com a textura overlay GPU - CMakeLists.txt actualitzat per incloure subsistema gpu/ Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
79 lines
2.9 KiB
C++
79 lines
2.9 KiB
C++
#include "gpu_context.hpp"
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#include <SDL3/SDL_log.h>
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#include <iostream>
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bool GpuContext::init(SDL_Window* window) {
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window_ = window;
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// Create GPU device — prefer Metal on macOS, Vulkan elsewhere
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SDL_GPUShaderFormat preferred = SDL_GPU_SHADERFORMAT_MSL
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| SDL_GPU_SHADERFORMAT_METALLIB
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| SDL_GPU_SHADERFORMAT_SPIRV;
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device_ = SDL_CreateGPUDevice(preferred, false, nullptr);
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if (!device_) {
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std::cerr << "GpuContext: SDL_CreateGPUDevice failed: " << SDL_GetError() << std::endl;
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return false;
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}
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std::cout << "GpuContext: driver = " << SDL_GetGPUDeviceDriver(device_) << std::endl;
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// Claim the window so the GPU device owns its swapchain
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if (!SDL_ClaimWindowForGPUDevice(device_, window_)) {
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std::cerr << "GpuContext: SDL_ClaimWindowForGPUDevice failed: " << SDL_GetError() << std::endl;
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SDL_DestroyGPUDevice(device_);
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device_ = nullptr;
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return false;
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}
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// Query swapchain format (Metal: typically B8G8R8A8_UNORM or R8G8B8A8_UNORM)
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swapchain_format_ = SDL_GetGPUSwapchainTextureFormat(device_, window_);
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std::cout << "GpuContext: swapchain format = " << static_cast<int>(swapchain_format_) << std::endl;
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// Default: VSync ON
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SDL_SetGPUSwapchainParameters(device_, window_,
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SDL_GPU_SWAPCHAINCOMPOSITION_SDR,
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SDL_GPU_PRESENTMODE_VSYNC);
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return true;
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}
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void GpuContext::destroy() {
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if (device_) {
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SDL_WaitForGPUIdle(device_);
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SDL_ReleaseWindowFromGPUDevice(device_, window_);
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SDL_DestroyGPUDevice(device_);
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device_ = nullptr;
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}
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window_ = nullptr;
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}
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SDL_GPUCommandBuffer* GpuContext::acquireCommandBuffer() {
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SDL_GPUCommandBuffer* cmd = SDL_AcquireGPUCommandBuffer(device_);
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if (!cmd) {
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SDL_Log("GpuContext: SDL_AcquireGPUCommandBuffer failed: %s", SDL_GetError());
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}
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return cmd;
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}
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SDL_GPUTexture* GpuContext::acquireSwapchainTexture(SDL_GPUCommandBuffer* cmd_buf,
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Uint32* out_w, Uint32* out_h) {
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SDL_GPUTexture* tex = nullptr;
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if (!SDL_AcquireGPUSwapchainTexture(cmd_buf, window_, &tex, out_w, out_h)) {
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SDL_Log("GpuContext: SDL_AcquireGPUSwapchainTexture failed: %s", SDL_GetError());
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return nullptr;
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}
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// tex == nullptr when window is minimized — caller should skip rendering
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return tex;
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}
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void GpuContext::submit(SDL_GPUCommandBuffer* cmd_buf) {
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SDL_SubmitGPUCommandBuffer(cmd_buf);
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}
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bool GpuContext::setVSync(bool enabled) {
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SDL_GPUPresentMode mode = enabled ? SDL_GPU_PRESENTMODE_VSYNC
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: SDL_GPU_PRESENTMODE_IMMEDIATE;
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return SDL_SetGPUSwapchainParameters(device_, window_,
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SDL_GPU_SWAPCHAINCOMPOSITION_SDR,
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mode);
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}
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