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i965: Try to assign SNB SF inputs to outputs.

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This commit is contained in:
Eric Anholt 2010-03-05 12:27:25 -08:00
parent 3b9612645e
commit f6f5e87679
1 changed files with 41 additions and 2 deletions
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43
src/mesa/drivers/dri/i965/gen6_sf_state.c
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@ -32,6 +32,25 @@
#include "main/macros.h"
#include "intel_batchbuffer.h"
static uint32_t
get_attr_override(struct brw_context *brw, int attr)
{
uint32_t attr_override;
int attr_index = 0, i;
/* Find the source index (0 = first attribute after the 4D position)
* for this output attribute. attr is currently a VERT_RESULT_* but should
* be FRAG_ATTRIB_*.
*/
for (i = 0; i < attr; i++) {
if (brw->vs.prog_data->outputs_written & BITFIELD64_BIT(i))
attr_index++;
}
attr_override = attr_index;
return attr_index;
}
static void
upload_sf_state(struct brw_context *brw)
{
@ -45,6 +64,7 @@ upload_sf_state(struct brw_context *brw)
int i;
/* _NEW_BUFFER */
GLboolean render_to_fbo = brw->intel.ctx.DrawBuffer->Name != 0;
int attr = 0;
dw1 =
num_outputs << GEN6_SF_NUM_OUTPUTS_SHIFT |
@ -122,8 +142,27 @@ upload_sf_state(struct brw_context *brw)
OUT_BATCH_F(ctx->Polygon.OffsetFactor); /* scale */
OUT_BATCH_F(0.0); /* XXX: global depth offset clamp */
for (i = 0; i < 8; i++) {
/* attribute overrides */
OUT_BATCH(0);
uint32_t attr_overrides = 0;
/* These should be generating FS inputs read instead of VS
* outputs written
*/
for (; attr < 64; attr++) {
if (brw->vs.prog_data->outputs_written & BITFIELD64_BIT(attr)) {
attr_overrides |= get_attr_override(brw, attr);
attr++;
break;
}
}
for (; attr < 64; attr++) {
if (brw->vs.prog_data->outputs_written & BITFIELD64_BIT(attr)) {
attr_overrides |= get_attr_override(brw, attr) << 16;
attr++;
break;
}
}
OUT_BATCH(attr_overrides);
}
OUT_BATCH(0); /* point sprite texcoord bitmask */
OUT_BATCH(0); /* constant interp bitmask */