diff options
Diffstat (limited to 'src/sna/gen6_render.c')
| -rw-r--r-- | src/sna/gen6_render.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/sna/gen6_render.c b/src/sna/gen6_render.c index bb0aab1f..d35942c3 100644 --- a/src/sna/gen6_render.c +++ b/src/sna/gen6_render.c @@ -585,6 +585,17 @@ gen6_emit_cc(struct sna *sna, if (render->blend == blend) return false; + if (op == PictOpClear) { + uint32_t src; + + /* We can emulate a clear using src, which is beneficial if + * the blend unit is already disabled. + */ + src = BLEND_OFFSET(GEN6_BLENDFACTOR_ONE, GEN6_BLENDFACTOR_ZERO); + if (render->blend == src) + return false; + } + OUT_BATCH(GEN6_3DSTATE_CC_STATE_POINTERS | (4 - 2)); OUT_BATCH((render->cc_blend + blend) | 1); if (render->blend == (unsigned)-1) { |