diff options
Diffstat (limited to 'src/mesa/swrast')
| -rw-r--r-- | src/mesa/swrast/s_span.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c index 1aa20f9d771..e517c9ae146 100644 --- a/src/mesa/swrast/s_span.c +++ b/src/mesa/swrast/s_span.c @@ -707,11 +707,13 @@ clip_span( struct gl_context *ctx, SWspan *span ) const GLint n = span->end; GLubyte *mask = span->array->mask; GLint i; + GLuint passed = 0; if (span->arrayMask & SPAN_MASK) { /* note: using & intead of && to reduce branches */ for (i = 0; i < n; i++) { mask[i] &= (x[i] >= xmin) & (x[i] < xmax) & (y[i] >= ymin) & (y[i] < ymax); + passed += mask[i]; } } else { @@ -719,9 +721,10 @@ clip_span( struct gl_context *ctx, SWspan *span ) for (i = 0; i < n; i++) { mask[i] = (x[i] >= xmin) & (x[i] < xmax) & (y[i] >= ymin) & (y[i] < ymax); + passed += mask[i]; } } - return GL_TRUE; /* some pixels visible */ + return passed > 0; } else { /* horizontal span of pixels */ |