From: Ian Romanick <ian.d.roman...@intel.com>
Signed-off-by: Ian Romanick <ian.d.roman...@intel.com>
Cc: Eric Anholt <e...@anholt.net>
Cc: Paul Berry <stereotype...@gmail.com>
---
src/glsl/builtins/glsl/determinant.glsl | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/src/glsl/builtins/glsl/determinant.glsl
b/src/glsl/builtins/glsl/determinant.glsl
index 78751a6..0800d40 100644
--- a/src/glsl/builtins/glsl/determinant.glsl
+++ b/src/glsl/builtins/glsl/determinant.glsl
@@ -22,6 +22,10 @@
*/
#version 120
+
+// Forward declaration because builtins don't know about other builtins.
+float dot(vec4, vec4);
+
float determinant(mat2 m)
{
return m[0].x * m[1].y - m[1].x * m[0].y;
@@ -63,8 +67,5 @@ float determinant(mat4 m)
adj_0.z = + (m[1].x * SubFactor01 - m[1].y * SubFactor03 + m[1].w *
SubFactor05);
adj_0.w = - (m[1].x * SubFactor02 - m[1].y * SubFactor04 + m[1].z *
SubFactor05);
- return (+ m[0].x * adj_0.x
- + m[0].y * adj_0.y
- + m[0].z * adj_0.z
- + m[0].w * adj_0.w);
+ return dot(m[0], adj_0);
}
--
1.8.1.4
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