diff options
| -rw-r--r-- | src/mesa/drivers/dri/r200/r200_texstate.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/mesa/drivers/dri/r200/r200_texstate.c b/src/mesa/drivers/dri/r200/r200_texstate.c index b57657c32b..2eb6962189 100644 --- a/src/mesa/drivers/dri/r200/r200_texstate.c +++ b/src/mesa/drivers/dri/r200/r200_texstate.c @@ -1038,10 +1038,10 @@ static GLboolean r200UpdateTextureEnv( GLcontext *ctx, int unit ) case GL_DOT3_RGBA: /* DOT3 works differently on R200 than on R100. On R100, just * setting the DOT3 mode did everything for you. On R200, the - * driver has to enable the biasing (the -0.5 in the combine - * equation), and it has add the 4x scale factor. The hardware - * only supports up to 8x in the post filter, so 2x part of it - * happens on the inputs going into the combiner. + * driver has to enable the biasing and scale in the inputs to + * put them in the proper [-1,1] range. This is what the 4x and + * the -0.5 in the DOT3 spec do. The post-scale is then set + * normally. */ RGBshift++; |