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[Fix] (GLImpl, DirectGLES, DirectVulkan): floor every advertised sample cap and clamp the realised count in the backends

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swung0x48
2026-08-20 04:10:45 -04:00
parent d9abf1c2c1
commit f297af7d2b
8 changed files with 137 additions and 22 deletions
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MobileGL/MG_Backend/DirectGLES/BackendObject_DirectGLES.cpp
+24
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@@ -8,6 +8,7 @@
#include "BackendObject_DirectGLES.h"
#include "MG_Backend/BackendObject.h"
#include "MG_Backend/BackendObjects.h"
#include <MG_Backend/DirectGLES/DirectGLES.h>
#include <MG_Backend/DirectGLES/Managers.h>
#include <MG_Backend/DirectGLES/Utils.h>
@@ -782,6 +783,29 @@ namespace MobileGL::MG_Backend::DirectGLES {
PopulateFormatCapabilitiesImpl(gl, capabilities, cache);
}
Int ClampSamplesToBackendSupport(SizeT targetIndex, TextureInternalFormat logicalFormat, GLenum imageFormat,
Int samples) {
if (samples <= 1) {
return samples;
}
Int maxSamples = 0;
const SizeT formatIndex = static_cast<SizeT>(logicalFormat);
if (pActiveBackendObject && targetIndex < kFormatCapabilityTargetCount &&
formatIndex < kFormatCapabilityFormatCount) {
// Descending, so the head is the largest count this device actually allocated.
const Vector<Int>& probedCounts =
pActiveBackendObject->GetFormatCapabilities().SampleCounts[targetIndex][formatIndex];
if (!probedCounts.empty()) {
maxSamples = probedCounts.front();
}
}
if (maxSamples <= 0) {
maxSamples = GetGLESFormatMaxSamples(g_GLESCapabilities, logicalFormat, imageFormat);
}
return std::min(samples, std::max(maxSamples, 1));
}
BackendObject_DirectGLES::~BackendObject_DirectGLES() {
DestroyEGLContext();
}