diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/gen6_sf_state.c')
| -rw-r--r-- | src/mesa/drivers/dri/i965/gen6_sf_state.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/src/mesa/drivers/dri/i965/gen6_sf_state.c b/src/mesa/drivers/dri/i965/gen6_sf_state.c index 6a9fa60..47d76e9 100644 --- a/src/mesa/drivers/dri/i965/gen6_sf_state.c +++ b/src/mesa/drivers/dri/i965/gen6_sf_state.c @@ -80,10 +80,23 @@ get_attr_override(const struct brw_vue_map *vue_map, int urb_entry_read_offset, * the vertex shader, so its value is undefined. Therefore the * attribute override we supply doesn't matter. * - * In either case the attribute override we supply doesn't matter, so - * just reference the first available attribute. + * (c) This attribute is gl_PrimitiveID, and it wasn't written by the + * previous shader stage. + * + * Note that we don't have to worry about the cases where the attribute + * is gl_PointCoord or is undergoing point sprite coordinate + * replacement, because in those cases, this function isn't called. + * + * In case (c), we need to program the attribute overrides so that the + * primitive ID will be stored in this slot. In every other case, the + * attribute override we supply doesn't matter. So just go ahead and + * program primitive ID in every case. */ - return 0; + return (ATTRIBUTE_0_OVERRIDE_W | + ATTRIBUTE_0_OVERRIDE_Z | + ATTRIBUTE_0_OVERRIDE_Y | + ATTRIBUTE_0_OVERRIDE_X | + (ATTRIBUTE_CONST_PRIM_ID << ATTRIBUTE_0_CONST_SOURCE_SHIFT)); } /* Compute the location of the attribute relative to urb_entry_read_offset. @@ -149,13 +162,17 @@ calculate_attr_overrides(const struct brw_context *brw, continue; /* _NEW_POINT */ + bool point_sprite = false; if (brw->ctx.Point.PointSprite && (attr >= VARYING_SLOT_TEX0 && attr <= VARYING_SLOT_TEX7) && brw->ctx.Point.CoordReplace[attr - VARYING_SLOT_TEX0]) { - *point_sprite_enables |= (1 << input_index); + point_sprite = true; } if (attr == VARYING_SLOT_PNTC) + point_sprite = true; + + if (point_sprite) *point_sprite_enables |= (1 << input_index); /* flat shading */ @@ -165,7 +182,7 @@ calculate_attr_overrides(const struct brw_context *brw, *flat_enables |= (1 << input_index); /* BRW_NEW_VUE_MAP_GEOM_OUT | _NEW_LIGHT | _NEW_PROGRAM */ - uint16_t attr_override = + uint16_t attr_override = point_sprite ? 0 : get_attr_override(&brw->vue_map_geom_out, urb_entry_read_offset, attr, brw->ctx.VertexProgram._TwoSideEnabled, |