added glsl/skinning.c test to test matrix blending/weighting

1 files changed, 24 insertions, 0 deletions

diff --git a/progs/glsl/skinning.vert b/progs/glsl/skinning.vert
new file mode 100644
index 00000000000..28970eee584
--- /dev/null
+++ b/progs/glsl/skinning.vert
@@ -0,0 +1,24 @@
+// Vertex weighting/blendin shader
+// Brian Paul
+// 4 Nov 2008
+
+uniform mat4 mat0, mat1;
+attribute float weight;
+
+void main() 
+{
+   // simple diffuse shading
+   // Note that we should really transform the normal vector along with
+   // the postion below... someday.
+   vec3 lightVec = vec3(0, 0, 1);
+   vec3 norm = gl_NormalMatrix * gl_Normal;
+   float dot = 0.2 + max(0.0, dot(norm, lightVec));
+   gl_FrontColor = vec4(dot);
+
+   // compute sum of weighted transformations
+   vec4 pos0 = mat0 * gl_Vertex;
+   vec4 pos1 = mat1 * gl_Vertex;
+   vec4 pos = mix(pos0, pos1, weight);
+
+   gl_Position = gl_ModelViewProjectionMatrix * pos;
+}