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

graphics: fix PS5 NGG vertex and instance draw offsets

Browse Source 
Refs: https://github.com/KytyPS5/KytyPS5/issues/130
This commit is contained in:
nmzik
2026-09-03 21:52:02 +02:00
parent 5ffcd28ca4
commit fb4d97e8a9
10 changed files with 147 additions and 48 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/graphics/shader/recompiler/ShaderRecompiler.cpp
+29 -13
View File
@@ -234,8 +234,10 @@ EmbeddedFetchData DetectEmbeddedVertexFetch(const Decoder::Program& decoded
uint32_t wave_size) {
EmbeddedFetchData data;
data.loads.reserve(input_info->resources_num);
int32_t offset_candidate = -1;
bool offset_conflict = false;
int32_t vertex_offset_candidate = -1;
int32_t instance_offset_candidate = -1;
bool vertex_offset_conflict = false;
bool instance_offset_conflict = false;
const int shift_regs = 8;
const int attrib_reg = input_info->fetch_attrib_reg + shift_regs;
@@ -263,26 +265,34 @@ EmbeddedFetchData DetectEmbeddedVertexFetch(const Decoder::Program& decoded
for (const auto& inst: decoded.instructions) {
// 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.
// seeds S_NGG_VERTEX_INDEX in v5 and S_NGG_INSTANCE_INDEX in v8, then applies the
// corresponding direct-draw offsets before fetching.
const bool vertex_index_accumulator =
IsDecodedVgpr(inst.dst) &&
(inst.dst.reg == 0 || (user_data_base == 8 && inst.dst.reg == 5));
const bool instance_index_accumulator =
IsDecodedVgpr(inst.dst) && (inst.dst.reg == (user_data_base == 8 ? 8u : 3u));
uint32_t sad_zero = 0;
const bool vertex_offset_add =
vertex_index_accumulator && IsDecodedSgpr(inst.src0) &&
const bool index_offset_add =
(vertex_index_accumulator || instance_index_accumulator) &&
IsDecodedSgpr(inst.src0) &&
((inst.opcode == Decoder::Opcode::V_ADD_I32 && IsDecodedVgpr(inst.src1) &&
inst.src1.reg == inst.dst.reg) ||
(user_data_base == 8 && inst.dst.reg == 5 &&
(user_data_base == 8 && (inst.dst.reg == 5 || inst.dst.reg == 8) &&
inst.opcode == Decoder::Opcode::V_SAD_U32 && 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) {
if (data.loads.empty() && index_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)) {
offset_conflict = true;
auto& candidate = vertex_index_accumulator ? vertex_offset_candidate
: instance_offset_candidate;
auto& conflict = vertex_index_accumulator ? vertex_offset_conflict
: instance_offset_conflict;
if (candidate >= 0 && candidate != static_cast<int32_t>(reg)) {
conflict = true;
} else {
offset_candidate = static_cast<int32_t>(reg);
candidate = static_cast<int32_t>(reg);
}
}
}
@@ -441,8 +451,13 @@ EmbeddedFetchData DetectEmbeddedVertexFetch(const Decoder::Program& decoded
load.attrib_id = buffer.attrib_id;
load.components = DecodedDstSize(inst);
load.prolog_loads = buffer.prolog_loads;
if (data.loads.empty() && !offset_conflict) {
data.vertex_offset_sgpr = offset_candidate;
if (data.loads.empty()) {
if (!vertex_offset_conflict) {
data.vertex_offset_sgpr = vertex_offset_candidate;
}
if (!instance_offset_conflict) {
data.instance_offset_sgpr = instance_offset_candidate;
}
}
data.loads.push_back(load);
}
@@ -615,7 +630,8 @@ TranslateResult TranslateProgram(std::span<const uint32_t> code, const CompileOp
IR::TrackResources(ir);
IR::EliminateDeadCode(ir.blocks);
if (options.stage == ShaderType::Vertex) {
ir.info.vertex_offset_sgpr = embedded_fetch.vertex_offset_sgpr;
ir.info.vertex_offset_sgpr = embedded_fetch.vertex_offset_sgpr;
ir.info.instance_offset_sgpr = embedded_fetch.instance_offset_sgpr;
}
TranslateResult result;