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gpu: approximate PPSA24156 EQAA with 2x MSAA and warn once

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nmzik
2026-10-19 05:17:32 +02:00
parent 2c730e58ea
commit 5f29374d5b
1 changed files with 10 additions and 1 deletions
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src/graphics/host_gpu/renderer/colorRenderTarget.cpp
+10 -1
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@@ -72,7 +72,16 @@ void RenderExecutor::ResolveRenderColorTarget(CommandBuffer& buffer, RenderColor
return;
}
const auto samples = render_sample_count(rt.attrib.num_fragments);
if (samples == 0 || rt.attrib.num_samples != rt.attrib.num_fragments) {
// TODO(PPSA24156): Replace this 2x MSAA approximation with proper 4-coverage/2-fragment EQAA.
const bool approximate_eqaa = rt.attrib.num_samples == 2 && rt.attrib.num_fragments == 1;
if (approximate_eqaa) {
static std::atomic_bool logged = false;
if (!logged.exchange(true, std::memory_order_relaxed)) {
Log::WriteToConsoleAndLog(
"Warning: approximating 4-coverage/2-fragment EQAA with 2x MSAA.\n");
}
}
if (samples == 0 || (rt.attrib.num_samples != rt.attrib.num_fragments && !approximate_eqaa)) {
EXIT("unsupported render-target sample configuration: samples=%u fragments=%u\n",
rt.attrib.num_samples, rt.attrib.num_fragments);
}