Fix GLSL compatible_pow to give 1.0 for 0 ^ 0

2014-01-14 22:58:07 +04:00 · 2014-01-14 22:58:07 +04:00 · 6e8321f2c0
parent 1c49eb0072
commit 6e8321f2c0
1 changed files with 3 additions and 0 deletions
--- a/source/blender/gpu/shaders/gpu_shader_material.glsl
+++ b/source/blender/gpu/shaders/gpu_shader_material.glsl
@ -6,6 +6,9 @@ float exp_blender(float f)

 float compatible_pow(float x, float y)
 {
+	if(y == 0.0) /* x^0 -> 1, including 0^0 */
+		return 1.0;
+
 	/* glsl pow doesn't accept negative x */
 	if(x < 0.0) {
 		if(mod(-y, 2.0) == 0.0)