raphiaura/KytyPS5
1
0
Fork 0
mirror of https://github.com/KytyPS5/KytyPS5.git synced 2026-10-20 10:56:58 +02:00
Code Issues Packages Projects Releases Wiki Activity

fix fetch shader V_SAD_U32, video-out buffer overlap

Browse Source
This commit is contained in:
nmzik
2026-07-19 17:53:15 +02:00
parent aebf6b4913
commit 42f634a751
4 changed files with 52 additions and 44 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/graphics/shader/recompiler/ShaderRecompiler.cpp
+15 -3
View File
@@ -336,9 +336,21 @@ EmbeddedFetchData DetectEmbeddedVertexFetch(const Decoder::Program& decoded
}
for (const auto& inst: decoded.instructions) {
if (data.loads.empty() && inst.opcode == Decoder::Opcode::VAddI32 &&
IsDecodedVgpr(inst.dst) && inst.dst.reg == 0 && IsDecodedSgpr(inst.src0) &&
IsDecodedVgpr(inst.src1) && inst.src1.reg == 0) {
// Fetch shaders accumulate the draw's vertex offset in v0. The PS5 NGG ABI
// seeds S_NGG_VERTEX_INDEX in v5 and applies the same offset there before fetching.
const bool vertex_index_accumulator =
IsDecodedVgpr(inst.dst) &&
(inst.dst.reg == 0 || (user_data_base == 8 && inst.dst.reg == 5));
uint32_t sad_zero = 0;
const bool vertex_offset_add =
vertex_index_accumulator && IsDecodedSgpr(inst.src0) &&
((inst.opcode == Decoder::Opcode::VAddI32 && IsDecodedVgpr(inst.src1) &&
inst.src1.reg == inst.dst.reg) ||
(user_data_base == 8 && inst.dst.reg == 5 &&
inst.opcode == Decoder::Opcode::VSadU32 && IsDecodedVgpr(inst.src2) &&
inst.src2.reg == inst.dst.reg &&
TryDecodedOperandConstant(sgprs, inst.src1, sad_zero) && sad_zero == 0));
if (data.loads.empty() && vertex_offset_add) {
const auto reg = DecodedSgprReg(inst.src0);
if (reg >= user_data_base && reg - user_data_base < user_data_count) {
if (offset_candidate >= 0 && offset_candidate != static_cast<int32_t>(reg)) {