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[Fix] (DirectVulkan): map RGB10_A2(UI) to A2B10G10R10 - GL 2_10_10_10_REV puts R in bits 0-9 so the A2R10G10B10 mapping silently swapped R/B on upload; also decode both 1010102 variants in readback

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swung0x48
2026-07-26 19:13:46 -04:00
parent 83cdfd6bdd
commit 7e048fc2bf
2 changed files with 24 additions and 3 deletions
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MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.cpp
+20 -1
View File
@@ -1951,6 +1951,8 @@ void main() {
// --- packed / special ---
case VK_FORMAT_A2B10G10R10_UNORM_PACK32:
case VK_FORMAT_A2B10G10R10_UINT_PACK32:
case VK_FORMAT_A2R10G10B10_UNORM_PACK32:
case VK_FORMAT_A2R10G10B10_UINT_PACK32:
case VK_FORMAT_B10G11R11_UFLOAT_PACK32:
case VK_FORMAT_E5B9G9R9_UFLOAT_PACK32:
case VK_FORMAT_R5G6B5_UNORM_PACK16:
@@ -1960,7 +1962,8 @@ void main() {
case VK_FORMAT_B5G5R5A1_UNORM_PACK16:
case VK_FORMAT_R4G4B4A4_UNORM_PACK16:
case VK_FORMAT_B4G4R4A4_UNORM_PACK16:
out.sourceClass = format == VK_FORMAT_A2B10G10R10_UINT_PACK32 ?
out.sourceClass = (format == VK_FORMAT_A2B10G10R10_UINT_PACK32 ||
format == VK_FORMAT_A2R10G10B10_UINT_PACK32) ?
ReadbackSourceClass::UnsignedInt : ReadbackSourceClass::Float;
out.special = format;
return true;
@@ -2036,6 +2039,15 @@ void main() {
rgba[3] = static_cast<Float>((word >> 30) & 0x3u) / 3.0f;
return;
}
case VK_FORMAT_A2R10G10B10_UNORM_PACK32: {
Uint32 word = 0;
Memcpy(&word, source, sizeof(word));
rgba[2] = static_cast<Float>(word & 0x3FFu) / 1023.0f;
rgba[1] = static_cast<Float>((word >> 10) & 0x3FFu) / 1023.0f;
rgba[0] = static_cast<Float>((word >> 20) & 0x3FFu) / 1023.0f;
rgba[3] = static_cast<Float>((word >> 30) & 0x3u) / 3.0f;
return;
}
case VK_FORMAT_B10G11R11_UFLOAT_PACK32: {
Uint32 word = 0;
Memcpy(&word, source, sizeof(word));
@@ -2187,6 +2199,13 @@ void main() {
rgba[1] = (word >> 10) & 0x3FFu;
rgba[2] = (word >> 20) & 0x3FFu;
rgba[3] = (word >> 30) & 0x3u;
} else if (srcFormat == VK_FORMAT_A2R10G10B10_UINT_PACK32) {
Uint32 word = 0;
Memcpy(&word, source, sizeof(word));
rgba[2] = word & 0x3FFu;
rgba[1] = (word >> 10) & 0x3FFu;
rgba[0] = (word >> 20) & 0x3FFu;
rgba[3] = (word >> 30) & 0x3u;
} else {
for (Int c = 0; c < desc.channels; ++c) {
if (desc.componentBits == 8) {
MobileGL/MG_Util/Converters/MGToVk/TextureEnumConverter.cpp
+4 -2
View File
@@ -133,9 +133,11 @@ namespace MobileGL {
case TextureInternalFormat::RGBA8Snorm:
return VK_FORMAT_R8G8B8A8_SNORM;
case TextureInternalFormat::RGB10A2:
return VK_FORMAT_A2R10G10B10_UNORM_PACK32;
// GL_UNSIGNED_INT_2_10_10_10_REV puts R in bits 0-9, which is Vulkan's
// A2B10G10R10 layout - A2R10G10B10 silently swaps R and B on upload.
return VK_FORMAT_A2B10G10R10_UNORM_PACK32;
case TextureInternalFormat::RGB10A2UI:
return VK_FORMAT_A2R10G10B10_UINT_PACK32;
return VK_FORMAT_A2B10G10R10_UINT_PACK32;
case TextureInternalFormat::RGBA16:
return VK_FORMAT_R16G16B16A16_UNORM;
case TextureInternalFormat::RGBA16Snorm: