octo
/
citra
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

shader_jit_a64_compiler: Improve MAX, MIN (#7137)

This commit is contained in:
merry 2023-11-11 12:57:01 +00:00 committed by GitHub
parent 80213bf88f
commit 271218b733
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
src/video_core/shader/shader_jit_a64_compiler.cpp
View File

@ -548,13 +548,8 @@ void JitShader::Compile_MAX(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2);
// VSCRATCH0 = Ordinal(SRC1)
FCMEQ(VSCRATCH0.S4(), SRC1.S4(), SRC1.S4());
// FMAX will always pick the NaN
FMAX(SRC1.S4(), SRC1.S4(), SRC2.S4());
// In the case of NaN, pick SRC2
// Equivalent to (b < a) ? a : b with associated NaN caveats
FCMGT(VSCRATCH0.S4(), SRC1.S4(), SRC2.S4());
BIF(SRC1.B16(), SRC2.B16(), VSCRATCH0.B16());
Compile_DestEnable(instr, SRC1);
@ -564,13 +559,8 @@ void JitShader::Compile_MIN(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2);
// VSCRATCH0 = Ordinal(SRC1)
FCMEQ(VSCRATCH0.S4(), SRC1.S4(), SRC1.S4());
// FMIN will always pick the NaN
FMIN(SRC1.S4(), SRC1.S4(), SRC2.S4());
// In the case of NaN, pick SRC2
// Equivalent to (a < b) ? a : b with associated NaN caveats
FCMGT(VSCRATCH0.S4(), SRC2.S4(), SRC1.S4());
BIF(SRC1.B16(), SRC2.B16(), VSCRATCH0.B16());
Compile_DestEnable(instr, SRC1);