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path: root/src/mesa/drivers/glide/fxsetup.c
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Diffstat (limited to 'src/mesa/drivers/glide/fxsetup.c')
-rw-r--r--src/mesa/drivers/glide/fxsetup.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/src/mesa/drivers/glide/fxsetup.c b/src/mesa/drivers/glide/fxsetup.c
index 9996499316..ce70b472d5 100644
--- a/src/mesa/drivers/glide/fxsetup.c
+++ b/src/mesa/drivers/glide/fxsetup.c
@@ -167,6 +167,9 @@ GLuint fxGetTexSetConfiguration(GLcontext *ctx,
case GL_BLEND:
envmode|=FX_UM_E0_BLEND;
break;
+ case GL_ADD:
+ envmode|=FX_UM_E0_ADD;
+ break;
default:
/* do nothing */
break;
@@ -213,6 +216,9 @@ GLuint fxGetTexSetConfiguration(GLcontext *ctx,
case GL_BLEND:
envmode|=FX_UM_E1_BLEND;
break;
+ case GL_ADD:
+ envmode|=FX_UM_E1_ADD;
+ break;
default:
/* do nothing */
break;
@@ -786,6 +792,57 @@ static void fxSetupTextureDoubleTMU(GLcontext *ctx)
GR_COMBINE_OTHER_TEXTURE,
FXFALSE);
break;
+
+
+ case (FX_UM_E0_MODULATE | FX_UM_E1_ADD): /* Quake 3 Sky */
+ {
+ GLboolean isalpha[FX_NUM_TMU];
+
+ if(ti0->baseLevelInternalFormat==GL_ALPHA)
+ isalpha[ti0->tmi.whichTMU]=GL_TRUE;
+ else
+ isalpha[ti0->tmi.whichTMU]=GL_FALSE;
+
+ if(ti1->baseLevelInternalFormat==GL_ALPHA)
+ isalpha[ti1->tmi.whichTMU]=GL_TRUE;
+ else
+ isalpha[ti1->tmi.whichTMU]=GL_FALSE;
+
+ if(isalpha[FX_TMU1])
+ grTexCombine(GR_TMU1,
+ GR_COMBINE_FUNCTION_ZERO,GR_COMBINE_FACTOR_NONE,
+ GR_COMBINE_FUNCTION_LOCAL,GR_COMBINE_FACTOR_NONE,
+ FXTRUE,FXFALSE);
+ else
+ grTexCombine(GR_TMU1,
+ GR_COMBINE_FUNCTION_LOCAL,GR_COMBINE_FACTOR_NONE,
+ GR_COMBINE_FUNCTION_LOCAL,GR_COMBINE_FACTOR_NONE,
+ FXFALSE,FXFALSE);
+
+ if(isalpha[FX_TMU0])
+ grTexCombine(GR_TMU0,
+ GR_COMBINE_FUNCTION_SCALE_OTHER,GR_COMBINE_FACTOR_ONE,
+ GR_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL,GR_COMBINE_FACTOR_ONE,
+ FXFALSE,FXFALSE);
+ else
+ grTexCombine(GR_TMU0,
+ GR_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL,GR_COMBINE_FACTOR_ONE,
+ GR_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL,GR_COMBINE_FACTOR_ONE,
+ FXFALSE,FXFALSE);
+
+ grColorCombine(GR_COMBINE_FUNCTION_SCALE_OTHER,
+ GR_COMBINE_FACTOR_LOCAL,
+ localc,
+ GR_COMBINE_OTHER_TEXTURE,
+ FXFALSE);
+
+ grAlphaCombine(GR_COMBINE_FUNCTION_SCALE_OTHER,
+ GR_COMBINE_FACTOR_LOCAL,
+ locala, GR_COMBINE_OTHER_TEXTURE,
+ FXFALSE);
+ break;
+ }
+
}
if (MESA_VERBOSE&VERBOSE_DRIVER) {