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Validate texture descriptor fields

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This commit is contained in:
nmzik
2026-09-23 11:42:59 +04:00
parent d30dca78be
commit ef83ba65ad
2 changed files with 102 additions and 0 deletions
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src/graphics/shader/recompiler/ir/passes/ResourceMaterialization.cpp
+14
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@@ -62,6 +62,13 @@ bool NullImageDescriptor(const DescriptorValue& descriptor) {
}
bool ValidImageDescriptor(const DescriptorValue& descriptor, bool r128 = false) {
const auto& words = descriptor.dwords;
// Reject texture descriptors with nonzero reserved bits.
if ((words[1] & 0x20000000u) != 0u || (words[2] & 0xf0003000u) != 0u ||
(!r128 && ((words[4] & 0xe000e000u) != 0u || (words[5] & 0xf9000000u) != 0u ||
(words[6] & 0x00007b00u) != 0u))) {
return false;
}
const auto type = static_cast<Prospero::ImageType>((descriptor.dwords[3] >> 28u) & 0xfu);
const auto format = static_cast<Prospero::BufferFormat>((descriptor.dwords[1] >> 20u) & 0x1ffu);
if (type < Prospero::ImageType::kColor1D || format == Prospero::BufferFormat::kInvalid ||
@@ -72,6 +79,13 @@ bool ValidImageDescriptor(const DescriptorValue& descriptor, bool r128 = false)
type != Prospero::ImageType::kColor2DMsaa) {
return false;
}
const bool array = type == Prospero::ImageType::kColor1DArray ||
type == Prospero::ImageType::kColor2DArray ||
type == Prospero::ImageType::kColor2DMsaaArray ||
type == Prospero::ImageType::kCube;
if (array && ((words[4] >> 16u) & 0x1fffu) > (words[4] & 0x1fffu)) {
return false;
}
if (type == Prospero::ImageType::kColor2DMsaa ||
type == Prospero::ImageType::kColor2DMsaaArray) {
const auto base_level = (descriptor.dwords[3] >> 12u) & 0xfu;