summaryrefslogtreecommitdiffstats
path: root/src/mesa/swrast
diff options
context:
space:
mode:
authorBrian Paul <brianp@vmware.com>2009-02-04 10:45:04 -0700
committerBrian Paul <brianp@vmware.com>2009-02-04 16:33:25 -0700
commit8962bac0a1e422afcd034f4ce00d45d8f3df46bf (patch)
tree562b3fe9df1ae8614799825bfb5cb4e346af55f8 /src/mesa/swrast
parent79e3441f6679c31532cd737129ec472b29d4d9c8 (diff)
swrast: add minor comments
Diffstat (limited to 'src/mesa/swrast')
-rw-r--r--src/mesa/swrast/s_span.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c
index 7f9cc64bb29..ab7b82b19d9 100644
--- a/src/mesa/swrast/s_span.c
+++ b/src/mesa/swrast/s_span.c
@@ -1311,6 +1311,7 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span)
/* Do the alpha test */
if (ctx->Color.AlphaEnabled) {
if (!_swrast_alpha_test(ctx, span)) {
+ /* all fragments failed test */
goto end;
}
}
@@ -1323,6 +1324,7 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span)
if (ctx->Stencil.Enabled && fb->Visual.stencilBits > 0) {
/* Combined Z/stencil tests */
if (!_swrast_stencil_and_ztest_span(ctx, span)) {
+ /* all fragments failed test */
goto end;
}
}
@@ -1331,6 +1333,7 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span)
ASSERT(ctx->Depth.Test);
ASSERT(span->arrayMask & SPAN_Z);
if (!_swrast_depth_test_span(ctx, span)) {
+ /* all fragments failed test */
goto end;
}
}
@@ -1350,6 +1353,7 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span)
* the occlusion test.
*/
if (colorMask == 0x0) {
+ /* no colors to write */
goto end;
}