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added extension #ifdef/#endifs

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This commit is contained in:
Brian Paul 2001-02-20 17:06:35 +00:00
parent 03ca5eb58f
commit 0a0595f2d3
1 changed files with 5 additions and 2 deletions
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7
progs/demos/shadowtex.c
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@ -1,4 +1,4 @@
/* $Id: shadowtex.c,v 1.1 2001/02/20 16:43:50 brianp Exp $ */
/* $Id: shadowtex.c,v 1.2 2001/02/20 17:06:35 brianp Exp $ */
/*
* Shadow demo using the GL_SGIX_depth_texture, GL_SGIX_shadow and
@ -347,12 +347,15 @@ Init(void)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
#ifdef GL_SGIX_shadow
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_SGIX, GL_TRUE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_OPERATOR_SGIX,
GL_TEXTURE_LEQUAL_R_SGIX);
#endif
#ifdef GL_SGIX_shadow_ambient
if (glutExtensionSupported("GL_SGIX_shadow_ambient"))
glTexParameterf(GL_TEXTURE_2D, GL_SHADOW_AMBIENT_SGIX, 0.3);
#endif
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);