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Test implementation of proposed GL_EXT_shadow_funcs extension. This just

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generalizes the R/texture comparision operators to include all eight of
the depth test comparisons.
This commit is contained in:
Brian Paul
2002-03-23 16:33:53 +00:00
parent 25b85bf02a
commit 636b2801d9
4 changed files with 119 additions and 58 deletions
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12
src/mesa/main/texstate.c
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@@ -1,4 +1,4 @@
/* $Id: texstate.c,v 1.65 2002/03/23 01:48:18 brianp Exp $ */
/* $Id: texstate.c,v 1.66 2002/03/23 16:33:53 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -1125,6 +1125,16 @@ _mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->CompareFunc = params[0];
}
else if (ctx->Extensions.EXT_shadow_funcs &&
(func == GL_EQUAL ||
func == GL_NOTEQUAL ||
func == GL_LESS ||
func == GL_GREATER ||
func == GL_ALWAYS ||
func == GL_NEVER)) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->CompareFunc = params[0];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(bad GL_TEXTURE_COMPARE_FUNC_ARB)");