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gpu: alpha-to-coverage support

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Caleb Cornett
2025-04-03 17:47:37 -04:00
committed by Sam Lantinga
parent d6d2c958a4
commit 44710a248c
6 changed files with 75 additions and 3 deletions
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6
src/gpu/SDL_gpu.c
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@@ -827,6 +827,12 @@ SDL_GPUGraphicsPipeline *SDL_CreateGPUGraphicsPipeline(
SDL_assert_release(!"Format is not supported for color targets on this device!");
return NULL;
}
if (graphicsPipelineCreateInfo->multisample_state.enable_alpha_to_coverage &&
(IsIntegerFormat(graphicsPipelineCreateInfo->target_info.color_target_descriptions[i].format)
|| IsCompressedFormat(graphicsPipelineCreateInfo->target_info.color_target_descriptions[i].format))) {
SDL_assert_release(!"Format is not compatible with alpha-to-coverage!");
return NULL;
}
if (graphicsPipelineCreateInfo->target_info.color_target_descriptions[i].blend_state.enable_blend) {
const SDL_GPUColorTargetBlendState *blend_state = &graphicsPipelineCreateInfo->target_info.color_target_descriptions[i].blend_state;
CHECK_BLENDFACTOR_ENUM_INVALID(blend_state->src_color_blendfactor, NULL)