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-rw-r--r--progs/glsl/CH11-toyball.vert.txt6
1 files changed, 5 insertions, 1 deletions
diff --git a/progs/glsl/CH11-toyball.vert.txt b/progs/glsl/CH11-toyball.vert.txt
index 1aa7e9cac2..b7da3ac839 100644
--- a/progs/glsl/CH11-toyball.vert.txt
+++ b/progs/glsl/CH11-toyball.vert.txt
@@ -14,7 +14,11 @@ uniform vec4 BallCenter; // ball center in modelling coordinates
void main()
{
- ECposition = gl_ModelViewMatrix * gl_Vertex;
+//orig: ECposition = gl_ModelViewMatrix * gl_Vertex;
+
+ ECposition = gl_TextureMatrix[0] * gl_Vertex;
+ ECposition = gl_ModelViewMatrix * ECposition;
+
ECballCenter = gl_ModelViewMatrix * BallCenter;
gl_Position = ftransform();
}