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svga: fix clip plane regression after recent tgsi_scan change

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Before the change "tgsi/scan: use properties for clip/cull distance
writemasks", the tgsi_shader_info::num_written_clipdistance field
was a multiple of four, now it's an accurate count.  In the svga
driver, we need a minor change to the loop test.

Reviewed-by: Charmaine Lee <charmainel@vmware.com>
This commit is contained in:
Brian Paul
2015-10-21 16:07:33 -06:00
parent 48c76eae8e
commit 18a631eb90
1 changed files with 2 additions and 2 deletions
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src/gallium/drivers/svga/svga_tgsi_vgpu10.c
+2 -2
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@@ -3097,7 +3097,7 @@ emit_clip_distance_instructions(struct svga_shader_emitter_v10 *emit)
unsigned i;
unsigned clip_plane_enable = emit->key.clip_plane_enable;
unsigned clip_dist_tmp_index = emit->clip_dist_tmp_index;
unsigned num_written_clipdist = emit->info.num_written_clipdistance;
int num_written_clipdist = emit->info.num_written_clipdistance;
assert(emit->clip_dist_out_index != INVALID_INDEX);
assert(emit->clip_dist_tmp_index != INVALID_INDEX);
@@ -3109,7 +3109,7 @@ emit_clip_distance_instructions(struct svga_shader_emitter_v10 *emit)
*/
emit->clip_dist_tmp_index = INVALID_INDEX;
for (i = 0; i < 2 && num_written_clipdist; i++, num_written_clipdist-=4) {
for (i = 0; i < 2 && num_written_clipdist > 0; i++, num_written_clipdist-=4) {
tmp_clip_dist_src = make_src_temp_reg(clip_dist_tmp_index + i);