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author | Campbell Barton <ideasman42@gmail.com> | 2014-04-16 17:25:10 +0400 |
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committer | Campbell Barton <ideasman42@gmail.com> | 2014-04-16 17:25:10 +0400 |
commit | d1b1d194dc9cc741d87dc63e701402de0776c694 (patch) | |
tree | 344bde4783c61c65412fa1fd2435e705ead26965 /source/blender/editors/mask | |
parent | b3972aeea05bc6c60d7b7da4e6b59a64b822448a (diff) |
Fix for half pixel offset rasterizing masks
Diffstat (limited to 'source/blender/editors/mask')
-rw-r--r-- | source/blender/editors/mask/mask_draw.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/source/blender/editors/mask/mask_draw.c b/source/blender/editors/mask/mask_draw.c index e84bdf12067..08896b39682 100644 --- a/source/blender/editors/mask/mask_draw.c +++ b/source/blender/editors/mask/mask_draw.c @@ -643,15 +643,21 @@ static void mask_rasterize_func(TaskPool *pool, void *taskdata, int UNUSED(threa ThreadedMaskRasterizeState *state = (ThreadedMaskRasterizeState *) BLI_task_pool_userdata(pool); ThreadedMaskRasterizeData *data = (ThreadedMaskRasterizeData *) taskdata; int scanline; + const float x_inv = 1.0f / (float)state->width; + const float y_inv = 1.0f / (float)state->height; + const float x_px_ofs = x_inv * 0.5f; + const float y_px_ofs = y_inv * 0.5f; for (scanline = 0; scanline < data->num_scanlines; scanline++) { + float xy[2]; int x, y = data->start_scanline + scanline; + + xy[1] = ((float)y * y_inv) + y_px_ofs; + for (x = 0; x < state->width; x++) { int index = y * state->width + x; - float xy[2]; - xy[0] = (float) x / state->width; - xy[1] = (float) y / state->height; + xy[0] = ((float)x * x_inv) + x_px_ofs; state->buffer[index] = BKE_maskrasterize_handle_sample(state->handle, xy); } |