diff options
Diffstat (limited to 'src/video_core/shader/shader_jit_x64.cpp')
-rw-r--r-- | src/video_core/shader/shader_jit_x64.cpp | 137 |
1 files changed, 78 insertions, 59 deletions
diff --git a/src/video_core/shader/shader_jit_x64.cpp b/src/video_core/shader/shader_jit_x64.cpp index cc66fc8d6..c7b63a9b7 100644 --- a/src/video_core/shader/shader_jit_x64.cpp +++ b/src/video_core/shader/shader_jit_x64.cpp @@ -115,6 +115,8 @@ static const X64Reg SRC1 = XMM1; static const X64Reg SRC2 = XMM2; /// Loaded with the third swizzled source register, otherwise can be used as a scratch register static const X64Reg SRC3 = XMM3; +/// Additional scratch register +static const X64Reg SCRATCH2 = XMM4; /// Constant vector of [1.0f, 1.0f, 1.0f, 1.0f], used to efficiently set a vector to one static const X64Reg ONE = XMM14; /// Constant vector of [-0.f, -0.f, -0.f, -0.f], used to efficiently negate a vector with XOR @@ -227,8 +229,8 @@ void JitCompiler::Compile_DestEnable(Instruction instr,X64Reg src) { u8 mask = ((swiz.dest_mask & 1) << 3) | ((swiz.dest_mask & 8) >> 3) | ((swiz.dest_mask & 2) << 1) | ((swiz.dest_mask & 4) >> 1); BLENDPS(SCRATCH, R(src), mask); } else { - MOVAPS(XMM4, R(src)); - UNPCKHPS(XMM4, R(SCRATCH)); // Unpack X/Y components of source and destination + MOVAPS(SCRATCH2, R(src)); + UNPCKHPS(SCRATCH2, R(SCRATCH)); // Unpack X/Y components of source and destination UNPCKLPS(SCRATCH, R(src)); // Unpack Z/W components of source and destination // Compute selector to selectively copy source components to destination for SHUFPS instruction @@ -236,7 +238,7 @@ void JitCompiler::Compile_DestEnable(Instruction instr,X64Reg src) { ((swiz.DestComponentEnabled(1) ? 3 : 2) << 2) | ((swiz.DestComponentEnabled(2) ? 0 : 1) << 4) | ((swiz.DestComponentEnabled(3) ? 2 : 3) << 6); - SHUFPS(SCRATCH, R(XMM4), sel); + SHUFPS(SCRATCH, R(SCRATCH2), sel); } // Store dest back to memory @@ -244,6 +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) { @@ -307,21 +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); } @@ -330,19 +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); } @@ -359,23 +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)); + // Set 4th component to 1.0 + MOVAPS(SCRATCH, R(SRC1)); + UNPCKHPS(SCRATCH, R(ONE)); // XYZW, 1111 -> Z1__ + UNPCKLPD(SRC1, R(SCRATCH)); // XYZW, Z1__ -> XYZ1 + } - 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); } @@ -415,7 +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); } @@ -428,10 +434,10 @@ void JitCompiler::Compile_SGE(Instruction instr) { Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2); } - CMPPS(SRC1, R(SRC2), CMP_NLT); - ANDPS(SRC1, R(ONE)); + CMPPS(SRC2, R(SRC1), CMP_LE); + ANDPS(SRC2, R(ONE)); - Compile_DestEnable(instr, SRC1); + Compile_DestEnable(instr, SRC2); } void JitCompiler::Compile_SLT(Instruction instr) { @@ -465,6 +471,7 @@ void JitCompiler::Compile_FLR(Instruction instr) { void JitCompiler::Compile_MAX(Instruction instr) { Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2); + // SSE semantics match PICA200 ones: In case of NaN, SRC2 is returned. MAXPS(SRC1, R(SRC2)); Compile_DestEnable(instr, SRC1); } @@ -472,6 +479,7 @@ void JitCompiler::Compile_MAX(Instruction instr) { void JitCompiler::Compile_MIN(Instruction instr) { Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2); + // SSE semantics match PICA200 ones: In case of NaN, SRC2 is returned. MINPS(SRC1, R(SRC2)); Compile_DestEnable(instr, SRC1); } @@ -485,8 +493,8 @@ void JitCompiler::Compile_MOVA(Instruction instr) { Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); - // Convert floats to integers (only care about X and Y components) - CVTPS2DQ(SRC1, R(SRC1)); + // Convert floats to integers using truncation (only care about X and Y components) + CVTTPS2DQ(SRC1, R(SRC1)); // Get result MOVQ_xmm(R(RAX), SRC1); @@ -578,27 +586,42 @@ void JitCompiler::Compile_CALLU(Instruction instr) { } void JitCompiler::Compile_CMP(Instruction instr) { + using Op = Instruction::Common::CompareOpType::Op; + Op op_x = instr.common.compare_op.x; + Op op_y = instr.common.compare_op.y; + Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2); - static const u8 cmp[] = { CMP_EQ, CMP_NEQ, CMP_LT, CMP_LE, CMP_NLE, CMP_NLT }; + // SSE doesn't have greater-than (GT) or greater-equal (GE) comparison operators. You need to + // emulate them by swapping the lhs and rhs and using LT and LE. NLT and NLE can't be used here + // because they don't match when used with NaNs. + static const u8 cmp[] = { CMP_EQ, CMP_NEQ, CMP_LT, CMP_LE, CMP_LT, CMP_LE }; - if (instr.common.compare_op.x == instr.common.compare_op.y) { + bool invert_op_x = (op_x == Op::GreaterThan || op_x == Op::GreaterEqual); + Gen::X64Reg lhs_x = invert_op_x ? SRC2 : SRC1; + Gen::X64Reg rhs_x = invert_op_x ? SRC1 : SRC2; + + if (op_x == op_y) { // Compare X-component and Y-component together - CMPPS(SRC1, R(SRC2), cmp[instr.common.compare_op.x]); + CMPPS(lhs_x, R(rhs_x), cmp[op_x]); + MOVQ_xmm(R(COND0), lhs_x); - MOVQ_xmm(R(COND0), SRC1); MOV(64, R(COND1), R(COND0)); } else { + bool invert_op_y = (op_y == Op::GreaterThan || op_y == Op::GreaterEqual); + Gen::X64Reg lhs_y = invert_op_y ? SRC2 : SRC1; + Gen::X64Reg rhs_y = invert_op_y ? SRC1 : SRC2; + // Compare X-component - MOVAPS(SCRATCH, R(SRC1)); - CMPSS(SCRATCH, R(SRC2), cmp[instr.common.compare_op.x]); + MOVAPS(SCRATCH, R(lhs_x)); + CMPSS(SCRATCH, R(rhs_x), cmp[op_x]); // Compare Y-component - CMPPS(SRC1, R(SRC2), cmp[instr.common.compare_op.y]); + CMPPS(lhs_y, R(rhs_y), cmp[op_y]); MOVQ_xmm(R(COND0), SCRATCH); - MOVQ_xmm(R(COND1), SRC1); + MOVQ_xmm(R(COND1), lhs_y); } SHR(32, R(COND0), Imm8(31)); @@ -616,12 +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); } |