From 082b74fa241ba71f27b2e3fdf756824a0467f7f4 Mon Sep 17 00:00:00 2001 From: Yuri Kunde Schlesner Date: Mon, 24 Aug 2015 01:46:58 -0300 Subject: Shaders: Explicitly conform to PICA semantics in MAX/MIN --- src/video_core/shader/shader_jit_x64.cpp | 2 ++ 1 file changed, 2 insertions(+) (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 e56bff2b8..456c8567d 100644 --- a/src/video_core/shader/shader_jit_x64.cpp +++ b/src/video_core/shader/shader_jit_x64.cpp @@ -467,6 +467,7 @@ 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); } @@ -474,6 +475,7 @@ 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); } -- cgit v1.2.3