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Merge pull request #1037 from aroulin/shader-ex2-lg2 

Shader: Implement EX2 and LG2 in interpreter/JIT
This commit is contained in:
bunnei 2015-08-18 19:42:32 -04:00
parent ef7eb8bc4c 7d3a6016d6
commit 026379ed55
3 changed files with 58 additions and 2 deletions
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36
src/video_core/shader/shader_interpreter.cpp
View File

@ -334,6 +334,42 @@ void RunInterpreter(UnitState<Debug>& state) {
Record<DebugDataRecord::CMP_RESULT>(state.debug, iteration, state.conditional_code);
break;
case OpCode::Id::EX2:
{
Record<DebugDataRecord::SRC1>(state.debug, iteration, src1);
Record<DebugDataRecord::DEST_IN>(state.debug, iteration, dest);
// EX2 only takes first component exp2 and writes it to all dest components
float24 ex2_res = float24::FromFloat32(std::exp2(src1[0].ToFloat32()));
for (int i = 0; i < 4; ++i) {
if (!swizzle.DestComponentEnabled(i))
continue;
dest[i] = ex2_res;
}
Record<DebugDataRecord::DEST_OUT>(state.debug, iteration, dest);
break;
}
case OpCode::Id::LG2:
{
Record<DebugDataRecord::SRC1>(state.debug, iteration, src1);
Record<DebugDataRecord::DEST_IN>(state.debug, iteration, dest);
// LG2 only takes the first component log2 and writes it to all dest components
float24 lg2_res = float24::FromFloat32(std::log2(src1[0].ToFloat32()));
for (int i = 0; i < 4; ++i) {
if (!swizzle.DestComponentEnabled(i))
continue;
dest[i] = lg2_res;
}
Record<DebugDataRecord::DEST_OUT>(state.debug, iteration, dest);
break;
}
default:
LOG_ERROR(HW_GPU, "Unhandled arithmetic instruction: 0x%02x (%s): 0x%08x",
(int)instr.opcode.Value().EffectiveOpCode(), instr.opcode.Value().GetInfo().name, instr.hex);

22
src/video_core/shader/shader_jit_x64.cpp
View File

@ -25,8 +25,8 @@ const JitFunction instr_table[64] = {
&JitCompiler::Compile_DP4, // dp4
nullptr, // dph
nullptr, // unknown
nullptr, // ex2
nullptr, // lg2
&JitCompiler::Compile_EX2, // ex2
&JitCompiler::Compile_LG2, // lg2
nullptr, // unknown
&JitCompiler::Compile_MUL, // mul
nullptr, // lge
@ -331,6 +331,24 @@ void JitCompiler::Compile_DP4(Instruction instr) {
Compile_DestEnable(instr, SRC1);
}
void JitCompiler::Compile_EX2(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
MOVSS(XMM0, R(SRC1));
ABI_CallFunction(reinterpret_cast<const void*>(exp2f));
SHUFPS(XMM0, R(XMM0), _MM_SHUFFLE(0, 0, 0, 0));
MOVAPS(SRC1, R(XMM0));
Compile_DestEnable(instr, SRC1);
}
void JitCompiler::Compile_LG2(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
MOVSS(XMM0, R(SRC1));
ABI_CallFunction(reinterpret_cast<const void*>(log2f));
SHUFPS(XMM0, R(XMM0), _MM_SHUFFLE(0, 0, 0, 0));
MOVAPS(SRC1, R(XMM0));
Compile_DestEnable(instr, SRC1);
}
void JitCompiler::Compile_MUL(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2);

2
src/video_core/shader/shader_jit_x64.h
View File

@ -37,6 +37,8 @@ public:
void Compile_ADD(Instruction instr);
void Compile_DP3(Instruction instr);
void Compile_DP4(Instruction instr);
void Compile_EX2(Instruction instr);
void Compile_LG2(Instruction instr);
void Compile_MUL(Instruction instr);
void Compile_FLR(Instruction instr);
void Compile_MAX(Instruction instr);