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openmw-tes3mp/files/shaders/alpha.glsl

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#define FUNC_NEVER 0x0200
#define FUNC_LESS 0x0201
#define FUNC_EQUAL 0x0202
#define FUNC_LEQUAL 0x0203
#define FUNC_GREATER 0x0204
#define FUNC_NOTEQUAL 0x0205
#define FUNC_GEQUAL 0x0206
#define FUNC_ALWAYS 0x0207
#if @alphaFunc != FUNC_ALWAYS && @alphaFunc != FUNC_NEVER
uniform float alphaRef;
#endif
void alphaTest()
{
#if @alphaFunc == FUNC_NEVER
discard;
#elif @alphaFunc == FUNC_LESS
if (gl_FragData[0].a > alphaRef)
discard;
#elif @alphaFunc == FUNC_EQUAL
if (gl_FragData[0].a != alphaRef)
discard;
#elif @alphaFunc == FUNC_LEQUAL
if (gl_FragData[0].a >= alphaRef)
discard;
#elif @alphaFunc == FUNC_GREATER
if (gl_FragData[0].a < alphaRef)
discard;
#elif @alphaFunc == FUNC_NOTEQUAL
if (gl_FragData[0].a == alphaRef)
discard;
#elif @alphaFunc == FUNC_GEQUAL
if (gl_FragData[0].a <= alphaRef)
discard;
#endif
}