diff options
Diffstat (limited to 'src/mesa/drivers')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp index 8f697c401eb..61b10e946dd 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp @@ -2270,6 +2270,17 @@ vec4_visitor::emit_urb_slot(int mrf, int vert_result) emit_clip_distances(hw_reg, (vert_result - VERT_RESULT_CLIP_DIST0) * 4); } break; + case VERT_RESULT_EDGE: + /* This is present when doing unfilled polygons. We're supposed to copy + * the edge flag from the user-provided vertex array + * (glEdgeFlagPointer), or otherwise we'll copy from the current value + * of that attribute (starts as 1.0f). This is then used in clipping to + * determine which edges should be drawn as wireframe. + */ + current_annotation = "edge flag"; + emit(MOV(reg, src_reg(dst_reg(ATTR, VERT_ATTRIB_EDGEFLAG, + glsl_type::float_type, WRITEMASK_XYZW)))); + break; case BRW_VERT_RESULT_PAD: /* No need to write to this slot */ break; @@ -2326,8 +2337,6 @@ vec4_visitor::emit_urb_writes() */ assert ((max_usable_mrf - base_mrf) % 2 == 0); - /* FINISHME: edgeflag */ - /* First mrf is the g0-based message header containing URB handles and such, * which is implied in VS_OPCODE_URB_WRITE. */ |