summaryrefslogtreecommitdiffstats
path: root/src/gallium/drivers/softpipe
diff options
context:
space:
mode:
Diffstat (limited to 'src/gallium/drivers/softpipe')
-rw-r--r--src/gallium/drivers/softpipe/sp_quad_fs.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/src/gallium/drivers/softpipe/sp_quad_fs.c b/src/gallium/drivers/softpipe/sp_quad_fs.c
index ad04dc2afc3..8ae5a7f028b 100644
--- a/src/gallium/drivers/softpipe/sp_quad_fs.c
+++ b/src/gallium/drivers/softpipe/sp_quad_fs.c
@@ -65,6 +65,7 @@ quad_shade_stage(struct quad_stage *qs)
/**
* Execute fragment shader for the four fragments in the quad.
+ * \return TRUE if quad is alive, FALSE if all four pixels are killed
*/
static INLINE boolean
shade_quad(struct quad_stage *qs, struct quad_header *quad)
@@ -98,11 +99,14 @@ coverage_quad(struct quad_stage *qs, struct quad_header *quad)
}
-
+/**
+ * Shade/write an array of quads
+ * Called via quad_stage::run()
+ */
static void
shade_quads(struct quad_stage *qs,
- struct quad_header *quads[],
- unsigned nr)
+ struct quad_header *quads[],
+ unsigned nr)
{
struct quad_shade_stage *qss = quad_shade_stage( qs );
struct softpipe_context *softpipe = qs->softpipe;
@@ -116,7 +120,7 @@ shade_quads(struct quad_stage *qs,
for (i = 0; i < nr; i++) {
if (!shade_quad(qs, quads[i]))
- continue;
+ continue; /* quad totally culled/killed */
if (/*do_coverage*/ 0)
coverage_quad( qs, quads[i] );
@@ -129,9 +133,6 @@ shade_quads(struct quad_stage *qs,
}
-
-
-
/**
* Per-primitive (or per-begin?) setup
*/