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Diffstat (limited to 'slideshow/opengl/basicVertexShader.glsl')
-rw-r--r--slideshow/opengl/basicVertexShader.glsl2
1 files changed, 2 insertions, 0 deletions
diff --git a/slideshow/opengl/basicVertexShader.glsl b/slideshow/opengl/basicVertexShader.glsl
index bd26c1b52115..020616fff872 100644
--- a/slideshow/opengl/basicVertexShader.glsl
+++ b/slideshow/opengl/basicVertexShader.glsl
@@ -29,11 +29,13 @@
#version 120
varying vec2 v_texturePosition;
+varying vec3 v_normal;
void main( void )
{
gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
v_texturePosition = gl_MultiTexCoord0.xy;
+ v_normal = normalize(gl_NormalMatrix * gl_Normal);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */