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/shader.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/shader.c')
| -rw-r--r-- | src/gallium/state_trackers/vega/shader.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/vega/shader.c b/src/gallium/state_trackers/vega/shader.c index 2a6bae8a63..bee6d84001 100644 --- a/src/gallium/state_trackers/vega/shader.c +++ b/src/gallium/state_trackers/vega/shader.c @@ -134,6 +134,8 @@ static VGboolean blend_use_shader(struct vg_context *ctx) switch (ctx->state.vg.blend_mode) { case VG_BLEND_SRC_OVER: advanced_blending = + (!paint_is_opaque(ctx->state.vg.fill_paint) || + !paint_is_opaque(ctx->state.vg.stroke_paint)) && util_format_has_alpha(ctx->draw_buffer->strb->format); break; case VG_BLEND_DST_OVER: |