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Added support for using the GPU renderer as an offscreen renderer

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SDL_CreateGPURenderer() now allows passing in an existing GPU device and passing in a NULL window to create an offscreen renderer.

Also renamed SDL_SetRenderGPUState() to SDL_SetGPURenderState().
This commit is contained in:
Sam Lantinga
2025-10-01 14:36:56 -07:00
parent 9461db1ec8
commit a864dcac25
36 changed files with 2390 additions and 3981 deletions
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14
test/testgpurender_effects.c
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@@ -148,6 +148,12 @@ static bool InitGPURenderState(void)
SDL_GPURenderStateCreateInfo createinfo;
int i;
device = SDL_GetGPURendererDevice(renderer);
if (!device) {
SDL_Log("Couldn't get GPU device");
return false;
}
formats = SDL_GetGPUShaderFormats(device);
if (formats == SDL_GPU_SHADERFORMAT_INVALID) {
SDL_Log("Couldn't get supported shader formats: %s", SDL_GetError());
@@ -244,8 +250,8 @@ SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
return SDL_APP_FAILURE;
}
renderer = SDL_CreateGPURenderer(window, SDL_GPU_SHADERFORMAT_SPIRV | SDL_GPU_SHADERFORMAT_DXIL | SDL_GPU_SHADERFORMAT_MSL, &device);
if (!renderer || !device) {
renderer = SDL_CreateRenderer(window, SDL_GPU_RENDERER);
if (!renderer) {
SDL_Log("Couldn't create renderer: %s", SDL_GetError());
return SDL_APP_FAILURE;
}
@@ -316,9 +322,9 @@ SDL_AppResult SDL_AppIterate(void *appstate)
SDL_SetRenderTarget(renderer, NULL);
/* Display the render target with the fullscreen effect */
SDL_SetRenderGPUState(renderer, effect->state);
SDL_SetGPURenderState(renderer, effect->state);
SDL_RenderTexture(renderer, target, NULL, NULL);
SDL_SetRenderGPUState(renderer, NULL);
SDL_SetGPURenderState(renderer, NULL);
/* Draw some help text */
SDL_SetRenderDrawColor(renderer, 255, 255, 255, SDL_ALPHA_OPAQUE);