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-rw-r--r--src/mesa/drivers/dri/i915/i830_texblend.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i915/i830_texblend.c b/src/mesa/drivers/dri/i915/i830_texblend.c
index 236be59e239..feea38379da 100644
--- a/src/mesa/drivers/dri/i915/i830_texblend.c
+++ b/src/mesa/drivers/dri/i915/i830_texblend.c
@@ -136,7 +136,7 @@ i830SetTexEnvCombine(struct i830_context * i830,
GLuint texel_op, GLuint * state, const GLfloat * factor)
{
const GLuint numColorArgs = combine->_NumArgsRGB;
- const GLuint numAlphaArgs = combine->_NumArgsA;
+ GLuint numAlphaArgs = combine->_NumArgsA;
GLuint blendop;
GLuint ablendop;
@@ -209,7 +209,7 @@ i830SetTexEnvCombine(struct i830_context * i830,
break;
case GL_DOT3_RGBA_EXT:
case GL_DOT3_RGBA:
- blendop = TEXBLENDOP_DOT3;
+ blendop = TEXBLENDOP_DOT4;
break;
default:
return pass_through(state, blendUnit);
@@ -273,6 +273,7 @@ i830SetTexEnvCombine(struct i830_context * i830,
if (combine->ModeRGB == GL_DOT3_RGBA_EXT ||
combine->ModeRGB == GL_DOT3_RGBA) {
ablendop = TEXBLENDOP_DOT4;
+ numAlphaArgs = 2;
args_A[0] = TEXBLENDARG_FACTOR; /* the global factor */
args_A[1] = TEXBLENDARG_FACTOR;
args_A[2] = TEXBLENDARG_FACTOR;