Revision: 52523
          
http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=52523
Author:   moguri
Date:     2012-11-24 00:58:57 +0000 (Sat, 24 Nov 2012)
Log Message:
-----------
BGE: Committing a patch from HG1 to fix [#30262] "bgl.glClipPlane don't work on 
Nvidia cards," which was also reported by HG1.

Modified Paths:
--------------
    trunk/blender/source/blender/gpu/shaders/gpu_shader_vertex.glsl

Modified: trunk/blender/source/blender/gpu/shaders/gpu_shader_vertex.glsl
===================================================================
--- trunk/blender/source/blender/gpu/shaders/gpu_shader_vertex.glsl     
2012-11-24 00:18:34 UTC (rev 52522)
+++ trunk/blender/source/blender/gpu/shaders/gpu_shader_vertex.glsl     
2012-11-24 00:58:57 UTC (rev 52523)
@@ -10,3 +10,11 @@
        varnormal = normalize(gl_NormalMatrix * gl_Normal);
        gl_Position = gl_ProjectionMatrix * co;
 
+       // Setting gl_ClipVertex is necessary to get glClipPlane working on 
NVIDIA graphic cards.
+       // gl_ClipVertex works only on NVIDIA graphic cards so we have to check 
with 
+       // __GLSL_CG_DATA_TYPES if a NVIDIA graphic card is used (Cg support).
+       // gl_ClipVerte is supported up to GLSL 1.20.
+       #ifdef __GLSL_CG_DATA_TYPES 
+               gl_ClipVertex = gl_ModelViewMatrix * gl_Vertex; 
+       #endif 
+

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