a3xx: make use of software clipping when hw can't handle it

The hw clipper only handles up to 6 UCPs. If there are more than 6 UCPs,
or a clip vertex, or clip distances are in use, then we must use the
fallback discard-based clipping from the frag shader.

Signed-off-by: Ilia Mirkin <[email protected]>
Cc: [email protected]

2 files changed, 7 insertions, 0 deletions

diff --git a/src/gallium/drivers/freedreno/ir3/ir3_shader.c b/src/gallium/drivers/freedreno/ir3/ir3_shader.c
index ac48132026c..76460d9231a 100644
--- a/src/gallium/drivers/freedreno/ir3/ir3_shader.c
+++ b/src/gallium/drivers/freedreno/ir3/ir3_shader.c
@@ -469,6 +469,12 @@ ir3_shader_disasm(struct ir3_shader_variant *so, uint32_t *bin)
 	debug_printf("\n");
 }
 
+uint64_t
+ir3_shader_outputs(const struct ir3_shader *so)
+{
+	return so->nir->info.outputs_written;
+}
+
 /* This has to reach into the fd_context a bit more than the rest of
  * ir3, but it needs to be aligned with the compiler, so both agree
  * on which const regs hold what.  And the logic is identical between
diff --git a/src/gallium/drivers/freedreno/ir3/ir3_shader.h b/src/gallium/drivers/freedreno/ir3/ir3_shader.h
index b773609249f..8c9483e1bc7 100644
--- a/src/gallium/drivers/freedreno/ir3/ir3_shader.h
+++ b/src/gallium/drivers/freedreno/ir3/ir3_shader.h
@@ -272,6 +272,7 @@ void ir3_shader_destroy(struct ir3_shader *shader);
 struct ir3_shader_variant * ir3_shader_variant(struct ir3_shader *shader,
 		struct ir3_shader_key key, struct pipe_debug_callback *debug);
 void ir3_shader_disasm(struct ir3_shader_variant *so, uint32_t *bin);
+uint64_t ir3_shader_outputs(const struct ir3_shader *so);
 
 struct fd_ringbuffer;
 struct fd_context;