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graphics: draw patched-offset indirect draws from GPU-read records

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This commit is contained in:
nmzik
2026-10-27 09:31:50 +01:00
parent 09753bf8ff
commit a5b3673a39
14 changed files with 118 additions and 21 deletions
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src/graphics/shader/recompiler/frontend/translate/Translate.cpp
+19 -2
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@@ -1389,10 +1389,27 @@ IR::Program TranslateProgram(const Decoder::Program& decoded, const CFG::Graph&
IR::U32(IR::Value(options.wave_size << 12u)));
entry_ir.SetScalarReg(static_cast<IR::ScalarReg>(3),
entry_ir.BitwiseOr(vertex_count, IR::U32(IR::Value(1u << 28u))));
// Vulkan adds an indirect record's bases to the indices; the hardware passes them
// only in the user SGPRs the packet patches.
const auto& offsets = options.input_info.vertex->indirect_offsets;
const auto index = [&](uint8_t slot, IR::StageInputKind kind,
IR::StageInputKind base_kind) {
if (offsets == ShaderIndirectOffsets {}) {
return builtin(kind);
}
const auto base = builtin(base_kind);
if (slot < options.user_data_count) {
entry_ir.SetScalarReg(static_cast<IR::ScalarReg>(options.user_data_base + slot),
base);
}
return entry_ir.ISub(builtin(kind), base);
};
entry_ir.SetVectorReg(static_cast<IR::VectorReg>(5),
builtin(IR::StageInputKind::VertexIndex));
index(offsets.vertex, IR::StageInputKind::VertexIndex,
IR::StageInputKind::BaseVertex));
entry_ir.SetVectorReg(static_cast<IR::VectorReg>(8),
builtin(IR::StageInputKind::InstanceIndex));
index(offsets.instance, IR::StageInputKind::InstanceIndex,
IR::StageInputKind::BaseInstance));
}
}
const bool flush_f32_inputs = options.stage == ShaderType::Compute &&