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shader: add S_MEMREALTIME opcode

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Co-authored-by: Maxime Allanic <maxime@allanic.me>
Co-authored-by: Mac <me@itsmemac.com>
This commit is contained in:
nmzik
2026-09-24 16:22:49 +04:00
parent 732057b072
commit e43c242683
4 changed files with 50 additions and 0 deletions
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src/graphics/shader/recompiler/frontend/decode/MemoryOps.cpp
+5
View File
@@ -21,6 +21,7 @@ constexpr MemoryOpcodeInfo SMEM_OPCODE_LIST[] = {
{0x04u, Opcode::S_LOAD_DWORDX16, 16, 32}, {0x08u, Opcode::S_BUFFER_LOAD_DWORD, 1, 32},
{0x09u, Opcode::S_BUFFER_LOAD_DWORDX2, 2, 32}, {0x0au, Opcode::S_BUFFER_LOAD_DWORDX4, 4, 32},
{0x0bu, Opcode::S_BUFFER_LOAD_DWORDX8, 8, 32}, {0x0cu, Opcode::S_BUFFER_LOAD_DWORDX16, 16, 32},
{0x25u, Opcode::S_MEMREALTIME, 2, 32},
};
constexpr MemoryOpcodeInfo MUBUF_OPCODE_LIST[] = {
@@ -245,6 +246,10 @@ void DecodeSmem(uint32_t pc, std::span<const uint32_t> code, uint32_t word_index
}
DecodeScalarDestination(sdst, pc, inst.dst);
if (inst.opcode == Opcode::S_MEMREALTIME) {
inst.src_count = 0;
return;
}
// SMEM encodes SBASE in SGPR pairs. Scalar-buffer loads still use the same
// pair index; their descriptor operand consumes four SGPRs from that base.
DecodeScalarSource(sbase * 2u, pc, inst.src0);
src/graphics/shader/recompiler/frontend/decode/ShaderDecoder.h
+1
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@@ -439,6 +439,7 @@ enum class Opcode {
S_BUFFER_LOAD_DWORDX4,
S_BUFFER_LOAD_DWORDX8,
S_BUFFER_LOAD_DWORDX16,
S_MEMREALTIME,
BUFFER_LOAD_FORMAT_X,
BUFFER_LOAD_FORMAT_XY,
BUFFER_LOAD_FORMAT_XYZ,
src/graphics/shader/recompiler/frontend/translate/Memory.cpp
+13
View File
@@ -1,8 +1,10 @@
#include "common/logging/log.h"
#include "graphics/shader/recompiler/frontend/translate/Translator.h"
#include "graphics/shader/recompiler/frontend/decode/ImageOps.h"
#include <algorithm>
#include <array>
#include <atomic>
namespace Libs::Graphics::ShaderRecompiler::Frontend {
@@ -891,6 +893,17 @@ bool Translator::EmitMemory(const Decoder::Instruction& inst) {
case Decoder::Opcode::S_BUFFER_LOAD_DWORDX4:
case Decoder::Opcode::S_BUFFER_LOAD_DWORDX8:
case Decoder::Opcode::S_BUFFER_LOAD_DWORDX16: return S_LOAD(inst, false);
case Decoder::Opcode::S_MEMREALTIME: {
static std::atomic_flag warned = ATOMIC_FLAG_INIT;
if (!warned.test_and_set(std::memory_order_relaxed)) {
Log::WriteToConsoleAndLog(
"Warning: S_MEMREALTIME uses placeholder UINT64_MAX; real-time clock not implemented.\n");
}
for (uint32_t component = 0; component < 2; component++) {
WriteOperand(ScalarDestinationOperand(inst.dst, component), IR::Value(UINT32_MAX));
}
return true;
}
case Decoder::Opcode::BUFFER_LOAD_UBYTE:
case Decoder::Opcode::BUFFER_LOAD_SBYTE: