Mesa (master): broadcom/vc5: Add support for GL_RASTERIZER_DISCARD

[Eric Anholt]

Module: Mesa
Branch: master
Commit: 25d199f67dce2698aa8a9c3a4010d90a44d3a894
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=25d199f67dce2698aa8a9c3a4010d90a44d3a894

Author: Eric Anholt <eric at anholt.net>
Date:   Tue Nov  7 10:08:59 2017 -0800

broadcom/vc5: Add support for GL_RASTERIZER_DISCARD

Fixes piglit discard-drawarrays.

---

 src/gallium/drivers/vc5/vc5_emit.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/gallium/drivers/vc5/vc5_emit.c b/src/gallium/drivers/vc5/vc5_emit.c
index a4a1af7ddf..b84ddd6647 100644
--- a/src/gallium/drivers/vc5/vc5_emit.c
+++ b/src/gallium/drivers/vc5/vc5_emit.c
@@ -262,9 +262,11 @@ vc5_emit_state(struct pipe_context *pctx)
                           VC5_DIRTY_COMPILED_FS)) {
                 cl_emit(&job->bcl, CONFIGURATION_BITS, config) {
                         config.enable_forward_facing_primitive =
+                                !vc5->rasterizer->base.rasterizer_discard &&
                                 !(vc5->rasterizer->base.cull_face &
                                   PIPE_FACE_FRONT);
                         config.enable_reverse_facing_primitive =
+                                !vc5->rasterizer->base.rasterizer_discard &&
                                 !(vc5->rasterizer->base.cull_face &
                                   PIPE_FACE_BACK);
                         /* This seems backwards, but it's what gets the