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[Fix] (Magma): read unbacked depth levels back from the CPU shadow

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swung0x48
2026-10-12 21:03:54 -04:00
parent 4eb0dbc8a9
commit 4e0989b99a
1 changed files with 14 additions and 0 deletions
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MobileGL/MG_Backend/DirectVulkan/Renderer/WireTextureReadback.inc
+14
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@@ -98,6 +98,20 @@
MG_Util::ConvertGLEnumToTextureUploadTarget(info.Target), info.Level,
IntVec3{static_cast<Int>(box.W), static_cast<Int>(box.H), static_cast<Int>(box.D)},
nativeFormat, raw)) return false;
// A depth-only level's shadow holds the format's own depth words, which the
// depth packer reads exactly as it reads them off a Vulkan copy.
if (nativeFormat == VK_FORMAT_D16_UNORM || nativeFormat == VK_FORMAT_D32_SFLOAT ||
nativeFormat == VK_FORMAT_X8_D24_UNORM_PACK32) {
if (info.Format != GL_DEPTH_COMPONENT) return false;
const SizeT texels = static_cast<SizeT>(Uint64(box.W) * box.H * box.D);
const SizeT wordBytes = nativeFormat == VK_FORMAT_D16_UNORM ? 2 : 4;
if (raw.size() < texels * wordBytes) return false;
Vector<Uint8> packed;
if (!PackDepthStencilTight(raw.data(), nullptr, nativeFormat, texels, info.Format, info.Type, packed) ||
packed.size() != info.DstSize) return false;
ownedBytes = Move(packed);
return true;
}
return PackWireColorTight(raw.data(), raw.size(), nativeFormat,
static_cast<TextureInternalFormat>(record.Desc.InternalFormat), info, ownedBytes);
};