diff options
| -rw-r--r-- | src/glamor_trapezoid.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/src/glamor_trapezoid.c b/src/glamor_trapezoid.c index d7bba66..5c02a8c 100644 --- a/src/glamor_trapezoid.c +++ b/src/glamor_trapezoid.c @@ -1664,15 +1664,20 @@ _glamor_trapezoids(CARD8 op, if(ret) return TRUE; } else { - picture = glamor_create_mask_picture(screen, dst, mask_format, - width, height, 1); - if (!picture) - return TRUE; - - ret = _glamor_generate_trapezoid_with_shader(screen, picture, traps, ntrap, &bounds); - - if (!ret) - FreePicture(picture, 0); + /* The precise mode is that we sample the trapezoid on the centre points of + an (2*n+1)x(2*n-1) subpixel grid. It is computationally expensive in shader + and we use inside area ratio to replace it if the polymode == Imprecise. */ + if(dst->polyMode == PolyModeImprecise) { + picture = glamor_create_mask_picture(screen, dst, mask_format, + width, height, 1); + if (!picture) + return TRUE; + + ret = _glamor_generate_trapezoid_with_shader(screen, picture, traps, ntrap, &bounds); + + if (!ret) + FreePicture(picture, 0); + } } #endif |