mirrors/HandmadeMath
1
0
Fork 0
mirror of https://github.com/HandmadeMath/HandmadeMath.git synced 2025-12-28 07:34:32 +00:00
Code Issues Packages Projects Releases Wiki Activity

Improve HMM_MultiplyMat4 (#76)

Browse Source 
Remove all transposes, (AT BT)T = BA
This commit is contained in:
IJzerbaard
2018-02-11 00:59:07 +01:00
committed by Ben Visness
parent 52fd5cceb4
commit eb5c659148
1 changed files with 4 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
HandmadeMath.h
View File

@@ -2209,15 +2209,12 @@ hmm_mat4 HMM_MultiplyMat4(hmm_mat4 Left, hmm_mat4 Right)
hmm_mat4 Result;
#ifdef HANDMADE_MATH__USE_SSE
hmm_mat4 TransposedLeft = HMM_Transpose(Left);
hmm_mat4 TransposedRight = HMM_Transpose(Right);
Result.Rows[0] = HMM_LinearCombineSSE(TransposedLeft.Rows[0], TransposedRight);
Result.Rows[1] = HMM_LinearCombineSSE(TransposedLeft.Rows[1], TransposedRight);
Result.Rows[2] = HMM_LinearCombineSSE(TransposedLeft.Rows[2], TransposedRight);
Result.Rows[3] = HMM_LinearCombineSSE(TransposedLeft.Rows[3], TransposedRight);
Result.Rows[0] = HMM_LinearCombineSSE(Right.Rows[0], Left);
Result.Rows[1] = HMM_LinearCombineSSE(Right.Rows[1], Left);
Result.Rows[2] = HMM_LinearCombineSSE(Right.Rows[2], Left);
Result.Rows[3] = HMM_LinearCombineSSE(Right.Rows[3], Left);
Result = HMM_Transpose(Result);
#else
int Columns;
for(Columns = 0; Columns < 4; ++Columns)