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i965: Enable attribute swizzling (repositioning) in the gen6 SF. 

We were trying to remap a fully-filled array down to only handing the
WM the components it uses.  This is called attribute swizzling, and if
you don't enable it you just get 1:1 mappings of inputs to outputs.

This almost fixes glsl-routing, except for the highest gl_TexCoord[]
indices.
This commit is contained in:
Eric Anholt 2010-10-08 11:16:16 -07:00
parent cac04a9397
commit 80c0077a6f
1 changed files with 2 additions and 1 deletions
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3
src/mesa/drivers/dri/i965/gen6_sf_state.c
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@ -52,7 +52,7 @@ get_attr_override(struct brw_context *brw, int fs_attr)
* for this output attribute. attr is currently a VERT_RESULT_* but should
* be FRAG_ATTRIB_*.
*/
for (i = 0; i < vs_attr; i++) {
for (i = 1; i < vs_attr; i++) {
if (brw->vs.prog_data->outputs_written & BITFIELD64_BIT(i))
attr_index++;
}
@ -75,6 +75,7 @@ upload_sf_state(struct brw_context *brw)
int attr = 0;
dw1 =
GEN6_SF_SWIZZLE_ENABLE |
num_outputs << GEN6_SF_NUM_OUTPUTS_SHIFT |
(num_inputs + 1) / 2 << GEN6_SF_URB_ENTRY_READ_LENGTH_SHIFT |
1 << GEN6_SF_URB_ENTRY_READ_OFFSET_SHIFT;