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VertexLoaderX64: optimize 4444 color conversion

Browse Source 
https://gist.github.com/rygorous/75133a50c60f9243366e
This commit is contained in:
Tillmann Karras 2015-10-22 14:46:57 +02:00
parent 5228758383
commit d80124ab59
1 changed files with 9 additions and 19 deletions
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28
Source/Core/VideoCommon/VertexLoaderX64.cpp
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@ -314,34 +314,24 @@ void VertexLoaderX64::ReadColor(OpArg data, u64 attribute, int format)
LoadAndSwap(16, scratch1, data);
if (cpu_info.bBMI2)
{
MOV(32, R(scratch3), Imm32(0x0F0F0F0F));
PDEP(32, scratch2, scratch1, R(scratch3));
MOV(32, R(scratch3), Imm32(0xF0F0F0F0));
PDEP(32, scratch1, scratch1, R(scratch3));
MOV(32, R(scratch2), Imm32(0x0F0F0F0F));
PDEP(32, scratch1, scratch1, R(scratch2));
}
else
{
MOV(32, R(scratch3), R(scratch1));
SHL(32, R(scratch1), Imm8(12));
AND(32, R(scratch1), Imm32(0x0F000000));
MOV(32, R(scratch2), R(scratch1));
MOV(32, R(scratch1), R(scratch3));
SHL(32, R(scratch1), Imm8(8));
AND(32, R(scratch1), Imm32(0x000F0000));
OR(32, R(scratch2), R(scratch1));
OR(32, R(scratch1), R(scratch2));
AND(32, R(scratch1), Imm32(0x00FF00FF));
MOV(32, R(scratch1), R(scratch3));
MOV(32, R(scratch2), R(scratch1));
SHL(32, R(scratch1), Imm8(4));
AND(32, R(scratch1), Imm32(0x00000F00));
OR(32, R(scratch2), R(scratch1));
OR(32, R(scratch1), R(scratch2));
AND(32, R(scratch1), Imm32(0x0F0F0F0F));
AND(32, R(scratch3), Imm8(0x0F));
OR(32, R(scratch2), R(scratch3));
MOV(32, R(scratch1), R(scratch2));
SHL(32, R(scratch1), Imm8(4));
}
MOV(32, R(scratch2), R(scratch1));
SHL(32, R(scratch1), Imm8(4));
OR(32, R(scratch1), R(scratch2));
SwapAndStore(32, MDisp(dst_reg, m_dst_ofs), scratch1);
load_bytes = 2;