Merge pull request #18 from jimon/fix_mat4_inverse_for_good

Fixing mat4 inverse again

2 files changed, 5 insertions, 12 deletions

diff --git a/README.md b/README.md
index 2fa9e58..b27f93c 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ gb single-file public domain libraries for C & C++
 library         | latest version | category | description
 ----------------|----------------|----------|-------------
 **gb.h**        | 0.26d          | misc     | Helper library (Standard library _improvement_)
-**gb_math.h**   | 0.07c          | math     | Vector math library geared towards game development
+**gb_math.h**   | 0.07d          | math     | Vector math library geared towards game development
 **gb_gl.h**     | 0.05           | graphics | OpenGL Helper Library
 **gb_string.h** | 0.95a          | strings  | A better string library (this is built into gb.h too with custom allocator support!)
 **gb_ini.h**    | 0.93           | misc     | Simple ini file loader library
diff --git a/gb_math.h b/gb_math.h
index 11eb9a2..4b17453 100644
--- a/gb_math.h
+++ b/gb_math.h
@@ -3,6 +3,7 @@
    use '#define GB_MATH_IMPLEMENTATION' before including to create the implementation in _ONE_ file
 
 Version History:
+	0.07d - Fix mat4_inverse
 	0.07c - Add gb_random01
 	0.07b - Fix mat4_inverse
 	0.07a - Fix Mat2
@@ -1565,9 +1566,9 @@ void gb_mat4_inverse(gbMat4 *out, gbMat4 *in) {
 	o[3][3] = +(m[0][0] * sf15 - m[0][1] * sf17 + m[0][2] * sf18);
 
 	ood = 1.0f / (m[0][0] * o[0][0] +
-	              m[1][0] * o[1][0] +
-	              m[2][0] * o[2][0] +
-	              m[3][0] * o[3][0]);
+				  m[0][1] * o[1][0] +
+				  m[0][2] * o[2][0] +
+				  m[0][3] * o[3][0]);
 
 	o[0][0] *= ood;
 	o[0][1] *= ood;
@@ -1585,14 +1586,6 @@ void gb_mat4_inverse(gbMat4 *out, gbMat4 *in) {
 	o[3][1] *= ood;
 	o[3][2] *= ood;
 	o[3][3] *= ood;
-
-	/* Transpose */
-	tmp = o[1][0]; o[1][0] = o[0][1]; o[0][1] = tmp;
-	tmp = o[2][0]; o[2][0] = o[0][2]; o[0][2] = tmp;
-	tmp = o[3][0]; o[3][0] = o[0][3]; o[0][3] = tmp;
-	tmp = o[2][1]; o[2][1] = o[1][2]; o[1][2] = tmp;
-	tmp = o[3][1]; o[3][1] = o[1][3]; o[1][3] = tmp;
-	tmp = o[3][2]; o[3][2] = o[2][3]; o[2][3] = tmp;
 }