diff options
| author | Eric Anholt <[email protected]> | 2012-07-27 12:57:56 -0700 |
|---|---|---|
| committer | Eric Anholt <[email protected]> | 2012-08-09 09:07:49 -0700 |
| commit | e119f98472f6ceb03ffd564eb0398233e7b81437 (patch) | |
| tree | 64674720e9ac7dd74d72097fd79122efd3837a55 | |
| parent | 7426d9d7699452f15f3288e781e1791d8d00a64a (diff) | |
i965/vs: Add support for copying user edge flags.
Fixes the glsl skinning demo regression since changing to the new GLSL
compiler, and is part of fixing piglit gl-2.0-edgeflag.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=50079
NOTE: This is a candidate for the 8.0 branch.
Reviewed-by: Kenneth Graunke <[email protected]>
| -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. */ |