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i965/gen7: Refactor SF setup a bit to handle overrides in one place.

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This is exactly analogous to Eric's Gen6 change in commit
e7280b16d6.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>

NOTE: This is a candidate for the 7.11 branch.
This commit is contained in:
Kenneth Graunke
2011-06-29 15:05:52 -07:00
parent f07cfebebe
commit 5edb3ddf41
1 changed files with 24 additions and 19 deletions
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43
src/mesa/drivers/dri/i965/gen7_sf_state.c
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@@ -39,11 +39,12 @@ upload_sbe_state(struct brw_context *brw)
uint32_t num_outputs = brw_count_bits(brw->fragment_program->Base.InputsRead);
uint32_t dw1, dw10, dw11;
int i;
int attr = 0;
int attr = 0, input_index = 0;
/* _NEW_TRANSFORM */
int urb_start = ctx->Transform.ClipPlanesEnabled ? 2 : 1;
/* _NEW_LIGHT */
int two_side_color = (ctx->Light.Enabled && ctx->Light.Model.TwoSide);
uint16_t attr_overrides[FRAG_ATTRIB_MAX];
/* FINISHME: Attribute Swizzle Control Mode? */
dw1 =
@@ -71,30 +72,34 @@ upload_sbe_state(struct brw_context *brw)
((brw->fragment_program->Base.InputsRead & FRAG_BIT_WPOS) ? 0 : 1));
}
/* Create the mapping from the FS inputs we produce to the VS outputs
* they source from.
*/
for (; attr < FRAG_ATTRIB_MAX; attr++) {
if (!(brw->fragment_program->Base.InputsRead & BITFIELD64_BIT(attr)))
continue;
/* The hardware can only do the overrides on 16 overrides at a
* time, and the other up to 16 have to be lined up so that the
* input index = the output index. We'll need to do some
* tweaking to make sure that's the case.
*/
assert(input_index < 16 || attr == input_index);
attr_overrides[input_index++] = get_attr_override(brw, attr,
two_side_color);
}
for (; attr < FRAG_ATTRIB_MAX; attr++)
attr_overrides[input_index++] = 0;
BEGIN_BATCH(14);
OUT_BATCH(_3DSTATE_SBE << 16 | (14 - 2));
OUT_BATCH(dw1);
/* Output dwords 2 through 9 */
for (i = 0; i < 8; i++) {
uint32_t attr_overrides = 0;
for (; attr < 64; attr++) {
if (brw->fragment_program->Base.InputsRead & BITFIELD64_BIT(attr)) {
attr_overrides |= get_attr_override(brw, attr, two_side_color);
attr++;
break;
}
}
for (; attr < 64; attr++) {
if (brw->fragment_program->Base.InputsRead & BITFIELD64_BIT(attr)) {
attr_overrides |= get_attr_override(brw, attr, two_side_color) << 16;
attr++;
break;
}
}
OUT_BATCH(attr_overrides);
OUT_BATCH(attr_overrides[i * 2] | attr_overrides[i * 2 + 1] << 16);
}
OUT_BATCH(dw10); /* point sprite texcoord bitmask */