diff options
| author | Chia-I Wu <olv@lunarg.com> | 2011-01-30 22:54:40 +0800 |
|---|---|---|
| committer | Chia-I Wu <olv@lunarg.com> | 2011-01-30 23:22:40 +0800 |
| commit | 3f0a966807f03a364edea0272ddf45f08ab7ce4f (patch) | |
| tree | b6d5fee2968cc39727752aa37e7734da0c26bee0 /src/gallium/state_trackers/vega/renderer.c | |
| parent | e919dee1edd469c174c5c07c95efd4932a674b67 (diff) | |
st/vega: Disable blending when the paint is opaque.
When the paint is opaque (currently, solid color with alpha 1.0f), no
blending is needed for VG_BLEND_SRC_OVER. This eliminates the serious
performance hit introduced by 859106f196ade77f59f8787b071739901cd1a843
for a common scenario.
Diffstat (limited to 'src/gallium/state_trackers/vega/renderer.c')
| -rw-r--r-- | src/gallium/state_trackers/vega/renderer.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/gallium/state_trackers/vega/renderer.c b/src/gallium/state_trackers/vega/renderer.c index e42bad7649..936bf2e4e0 100644 --- a/src/gallium/state_trackers/vega/renderer.c +++ b/src/gallium/state_trackers/vega/renderer.c @@ -28,6 +28,7 @@ #include "renderer.h" #include "vg_context.h" +#include "paint.h" /* for paint_is_opaque */ #include "pipe/p_context.h" #include "pipe/p_state.h" @@ -1289,7 +1290,11 @@ static void renderer_validate_blend(struct renderer *renderer, blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ZERO; break; case VG_BLEND_SRC_OVER: - if (!util_format_has_alpha(fb_format)) { + if (paint_is_opaque(state->fill_paint) && + paint_is_opaque(state->stroke_paint)) { + /* no blending */ + } + else if (!util_format_has_alpha(fb_format)) { blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_SRC_ALPHA; blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE; blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_INV_SRC_ALPHA; |