1 files changed, 19 insertions, 0 deletions
diff --git a/matchblox/shaders/grayscale.vert b/matchblox/shaders/grayscale.vert
new file mode 100644
index 0000000..af155c8
--- /dev/null
+++ b/matchblox/shaders/grayscale.vert
@@ -0,0 +1,19 @@
+varying vec4 ambient, diffuse;
+varying vec3 normal, lightdir, halfvector;
+
+void main()
+{
+	//transform the normal
+	normal = gl_NormalMatrix * gl_Normal;
+
+	//determine the light direction
+	lightdir   = normalize(gl_LightSource[0].position.xyz);
+	halfvector = normalize(gl_LightSource[0].halfVector.xyz);
+	
+	//compute diffuse and ambient terms
+	diffuse = gl_FrontMaterial.diffuse * gl_LightSource[0].diffuse;
+	ambient = gl_FrontMaterial.ambient * (gl_LightSource[0].ambient + gl_LightModel.ambient);
+	
+	gl_Position = ftransform();
+	gl_TexCoord[0] = gl_MultiTexCoord0;
+}