debuggerx/eden
1
0
Fork 0
mirror of https://git.eden-emu.dev/eden-emu/eden.git synced 2026-08-27 17:31:31 +00:00
Code Issues Packages Projects Releases Wiki Activity

[spir-v] Added fallback for unsupported quads + shader-stage checks

Browse Source
This commit is contained in:
CamilleLaVey
2026-07-02 04:10:13 -04:00
committed by crueter
parent baaf9a628c
commit 2e1f4cb84b
3 changed files with 15 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/shader_recompiler/frontend/maxwell/translate/impl/warp_shuffle.cpp
+4 -6
View File
@@ -36,9 +36,7 @@ enum class ShuffleMode : u64 {
}
}
// SHFL mask encoding for quad-constrained operations:
// bits [0:4] = clamp = 3, bits [8:12] = seg_mask = 28 (0x1C)
constexpr u32 QUAD_MASK = (28u << 8) | 3u; // 0x1C03
constexpr u32 QUAD_MASK = (28u << 8) | 3u;
void Shuffle(TranslatorVisitor& v, u64 insn, const IR::U32& index, const IR::U32& mask,
bool index_is_imm, u32 index_imm, bool mask_is_imm, u32 mask_imm) {
@@ -50,15 +48,15 @@ void Shuffle(TranslatorVisitor& v, u64 insn, const IR::U32& index, const IR::U32
BitField<48, 3, IR::Pred> pred;
} const shfl{insn};
if (mask_is_imm && mask_imm == QUAD_MASK && index_is_imm) {
const bool is_quad_candidate{mask_is_imm && mask_imm == QUAD_MASK && index_is_imm &&
v.env.ShaderStage() == Stage::Fragment};
if (is_quad_candidate) {
if (shfl.mode == ShuffleMode::IDX && index_imm <= 3) {
// SHFL IDX with lane 0-3 in a quad → QuadBroadcast
v.X(shfl.dest_reg, v.ir.QuadBroadcast(v.X(shfl.src_reg), v.ir.Imm32(index_imm)));
v.ir.SetPred(shfl.pred, v.ir.Imm1(true));
return;
}
if (shfl.mode == ShuffleMode::BFLY && index_imm >= 1 && index_imm <= 3) {
// SHFL BFLY index 1/2/3 in a quad → QuadSwap direction 0/1/2
v.X(shfl.dest_reg, v.ir.QuadSwap(v.X(shfl.src_reg), v.ir.Imm32(index_imm - 1)));
v.ir.SetPred(shfl.pred, v.ir.Imm1(true));
return;