brw_MOV(p, deref_4f(dest_ptr, delta), brw_imm_f(1));
else
brw_MOV(p, deref_4f(dest_ptr, delta), deref_4f(v0_ptr, delta));
- } else if (varying == VARYING_SLOT_PSIZ ||
- varying == VARYING_SLOT_CLIP_DIST0 ||
- varying == VARYING_SLOT_CLIP_DIST1) {
- /* PSIZ doesn't need interpolation because it isn't used by the
- * fragment shader. CLIP_DIST0 and CLIP_DIST1 don't need
- * intepolation because on pre-GEN6, these are just placeholder VUE
- * slots that don't perform any action.
+ } else if (varying == VARYING_SLOT_PSIZ) {
+ /* PSIZ doesn't need interpolation because it isn't used by the
+ * fragment shader.
*/
} else if (varying < VARYING_SLOT_MAX) {
/* This is a true vertex result (and not a special value for the VUE
* header), so interpolate:
*
* New = attr0 + t*attr1 - t*attr0
+ *
+ * Unless the attribute is flat shaded -- in which case just copy
+ * from one of the sources (doesn't matter which; already copied from pv)
*/
- struct brw_reg tmp = get_tmp(c);
- struct brw_reg t =
- c->key.interpolation_mode.mode[slot] == INTERP_QUALIFIER_NOPERSPECTIVE ?
- t_nopersp : t0;
-
- brw_MUL(p,
- vec4(brw_null_reg()),
- deref_4f(v1_ptr, delta),
- t);
-
- brw_MAC(p,
- tmp,
- negate(deref_4f(v0_ptr, delta)),
- t);
-
- brw_ADD(p,
- deref_4f(dest_ptr, delta),
- deref_4f(v0_ptr, delta),
- tmp);
-
- release_tmp(c, tmp);
+ GLuint interp = c->key.interpolation_mode.mode[slot];
+
+ if (interp != INTERP_QUALIFIER_FLAT) {
+ struct brw_reg tmp = get_tmp(c);
+ struct brw_reg t =
+ interp == INTERP_QUALIFIER_NOPERSPECTIVE ? t_nopersp : t0;
+
+ brw_MUL(p,
+ vec4(brw_null_reg()),
+ deref_4f(v1_ptr, delta),
+ t);
+
+ brw_MAC(p,
+ tmp,
+ negate(deref_4f(v0_ptr, delta)),
+ t);
+
+ brw_ADD(p,
+ deref_4f(dest_ptr, delta),
+ deref_4f(v0_ptr, delta),
+ tmp);
+
+ release_tmp(c, tmp);
+ }
+ else {
+ brw_MOV(p,
+ deref_4f(dest_ptr, delta),
+ deref_4f(v0_ptr, delta));
+ }
}
}
{
struct brw_compile *p = &c->func;
struct brw_reg incoming = get_element_ud(c->reg.R0, 2);
+ struct brw_context *brw = p->brw;
/* Shift so that lowest outcode bit is rightmost:
*/
/* Rearrange userclip outcodes so that they come directly after
* the fixed plane bits.
*/
- brw_AND(p, tmp, incoming, brw_imm_ud(0x3f<<14));
+ if (brw->gen == 5 || brw->is_g4x)
+ brw_AND(p, tmp, incoming, brw_imm_ud(0xff<<14));
+ else
+ brw_AND(p, tmp, incoming, brw_imm_ud(0x3f<<14));
+
brw_SHR(p, tmp, tmp, brw_imm_ud(8));
brw_OR(p, c->reg.planemask, c->reg.planemask, tmp);