From 630a850d4d5a0509b16e96aaccc81e9384e1fba8 Mon Sep 17 00:00:00 2001 From: Yuri Kunde Schlesner Date: Mon, 24 Aug 2015 01:48:15 -0300 Subject: Shaders: Fix multiplications between 0.0 and inf The PICA200 semantics for multiplication are so that when multiplying inf by exactly 0.0, the result is 0.0, instead of NaN, as defined by IEEE. This is relied upon by games. Fixes #1024 (missing OoT interface items) --- src/video_core/shader/shader_jit_x64.cpp | 78 ++++++++++++++++---------------- 1 file changed, 39 insertions(+), 39 deletions(-) (limited to 'src/video_core/shader/shader_jit_x64.cpp') diff --git a/src/video_core/shader/shader_jit_x64.cpp b/src/video_core/shader/shader_jit_x64.cpp index 456c8567d..ddae61cae 100644 --- a/src/video_core/shader/shader_jit_x64.cpp +++ b/src/video_core/shader/shader_jit_x64.cpp @@ -246,6 +246,19 @@ void JitCompiler::Compile_DestEnable(Instruction instr,X64Reg src) { } } +void JitCompiler::Compile_SanitizedMul(Gen::X64Reg src1, Gen::X64Reg src2, Gen::X64Reg scratch) { + MOVAPS(scratch, R(src1)); + CMPPS(scratch, R(src2), CMP_ORD); + + MULPS(src1, R(src2)); + + MOVAPS(src2, R(src1)); + CMPPS(src2, R(src2), CMP_UNORD); + + XORPS(scratch, R(src2)); + ANDPS(src1, R(scratch)); +} + void JitCompiler::Compile_EvaluateCondition(Instruction instr) { // Note: NXOR is used below to check for equality switch (instr.flow_control.op) { @@ -309,21 +322,17 @@ void JitCompiler::Compile_DP3(Instruction instr) { Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2); - if (Common::GetCPUCaps().sse4_1) { - DPPS(SRC1, R(SRC2), 0x7f); - } else { - MULPS(SRC1, R(SRC2)); + Compile_SanitizedMul(SRC1, SRC2, SCRATCH); - MOVAPS(SRC2, R(SRC1)); - SHUFPS(SRC2, R(SRC2), _MM_SHUFFLE(1, 1, 1, 1)); + MOVAPS(SRC2, R(SRC1)); + SHUFPS(SRC2, R(SRC2), _MM_SHUFFLE(1, 1, 1, 1)); - MOVAPS(SRC3, R(SRC1)); - SHUFPS(SRC3, R(SRC3), _MM_SHUFFLE(2, 2, 2, 2)); + MOVAPS(SRC3, R(SRC1)); + SHUFPS(SRC3, R(SRC3), _MM_SHUFFLE(2, 2, 2, 2)); - SHUFPS(SRC1, R(SRC1), _MM_SHUFFLE(0, 0, 0, 0)); - ADDPS(SRC1, R(SRC2)); - ADDPS(SRC1, R(SRC3)); - } + SHUFPS(SRC1, R(SRC1), _MM_SHUFFLE(0, 0, 0, 0)); + ADDPS(SRC1, R(SRC2)); + ADDPS(SRC1, R(SRC3)); Compile_DestEnable(instr, SRC1); } @@ -332,19 +341,15 @@ void JitCompiler::Compile_DP4(Instruction instr) { Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2); - if (Common::GetCPUCaps().sse4_1) { - DPPS(SRC1, R(SRC2), 0xff); - } else { - MULPS(SRC1, R(SRC2)); + Compile_SanitizedMul(SRC1, SRC2, SCRATCH); - MOVAPS(SRC2, R(SRC1)); - SHUFPS(SRC1, R(SRC1), _MM_SHUFFLE(2, 3, 0, 1)); // XYZW -> ZWXY - ADDPS(SRC1, R(SRC2)); + MOVAPS(SRC2, R(SRC1)); + SHUFPS(SRC1, R(SRC1), _MM_SHUFFLE(2, 3, 0, 1)); // XYZW -> ZWXY + ADDPS(SRC1, R(SRC2)); - MOVAPS(SRC2, R(SRC1)); - SHUFPS(SRC1, R(SRC1), _MM_SHUFFLE(0, 1, 2, 3)); // XYZW -> WZYX - ADDPS(SRC1, R(SRC2)); - } + MOVAPS(SRC2, R(SRC1)); + SHUFPS(SRC1, R(SRC1), _MM_SHUFFLE(0, 1, 2, 3)); // XYZW -> WZYX + ADDPS(SRC1, R(SRC2)); Compile_DestEnable(instr, SRC1); } @@ -361,23 +366,22 @@ void JitCompiler::Compile_DPH(Instruction instr) { if (Common::GetCPUCaps().sse4_1) { // Set 4th component to 1.0 BLENDPS(SRC1, R(ONE), 0x8); // 0b1000 - DPPS(SRC1, R(SRC2), 0xff); } else { // Reverse to set the 4th component to 1.0 SHUFPS(SRC1, R(SRC1), _MM_SHUFFLE(0, 1, 2, 3)); MOVSS(SRC1, R(ONE)); SHUFPS(SRC1, R(SRC1), _MM_SHUFFLE(0, 1, 2, 3)); + } - MULPS(SRC1, R(SRC2)); + Compile_SanitizedMul(SRC1, SRC2, SCRATCH); - MOVAPS(SRC2, R(SRC1)); - SHUFPS(SRC1, R(SRC1), _MM_SHUFFLE(2, 3, 0, 1)); // XYZW -> ZWXY - ADDPS(SRC1, R(SRC2)); + MOVAPS(SRC2, R(SRC1)); + SHUFPS(SRC1, R(SRC1), _MM_SHUFFLE(2, 3, 0, 1)); // XYZW -> ZWXY + ADDPS(SRC1, R(SRC2)); - MOVAPS(SRC2, R(SRC1)); - SHUFPS(SRC1, R(SRC1), _MM_SHUFFLE(0, 1, 2, 3)); // XYZW -> WZYX - ADDPS(SRC1, R(SRC2)); - } + MOVAPS(SRC2, R(SRC1)); + SHUFPS(SRC1, R(SRC1), _MM_SHUFFLE(0, 1, 2, 3)); // XYZW -> WZYX + ADDPS(SRC1, R(SRC2)); Compile_DestEnable(instr, SRC1); } @@ -417,7 +421,7 @@ void JitCompiler::Compile_LG2(Instruction instr) { void JitCompiler::Compile_MUL(Instruction instr) { Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2); - MULPS(SRC1, R(SRC2)); + Compile_SanitizedMul(SRC1, SRC2, SCRATCH); Compile_DestEnable(instr, SRC1); } @@ -635,12 +639,8 @@ void JitCompiler::Compile_MAD(Instruction instr) { Compile_SwizzleSrc(instr, 3, instr.mad.src3, SRC3); } - if (Common::GetCPUCaps().fma) { - VFMADD213PS(SRC1, SRC2, R(SRC3)); - } else { - MULPS(SRC1, R(SRC2)); - ADDPS(SRC1, R(SRC3)); - } + Compile_SanitizedMul(SRC1, SRC2, SCRATCH); + ADDPS(SRC1, R(SRC3)); Compile_DestEnable(instr, SRC1); } -- cgit v1.2.3