Simplified rotation shader code.

1 files changed, 2 insertions, 5 deletions

diff --git a/shaders/bullet_fragment.glsl b/shaders/bullet_fragment.glsl
index 5e8becd..55e29ff 100644
--- a/shaders/bullet_fragment.glsl
+++ b/shaders/bullet_fragment.glsl
@@ -1,12 +1,9 @@
-varying mat4 v_tex_rot;
+varying mat3 v_tex_rot;
 uniform sampler2D tex;
 
 void main() {
 	vec2 l_uv = gl_TexCoord[0].xy;
-	const vec2 l_offset = vec2(0.5, 0.5);
-	l_uv -= l_offset;
-	l_uv = vec2(v_tex_rot * vec4(l_uv, 0.0, 1.0));
-	l_uv += l_offset;
+	l_uv = vec2(v_tex_rot * vec3(l_uv, 0.5));
 	gl_FragColor = texture2D(tex, l_uv);
 	float M = max(max(gl_FragColor.x, gl_FragColor.y), gl_FragColor.z);
 	float C = M - min(min(gl_FragColor.x, gl_FragColor.y), gl_FragColor.z);