Commit: 65b806d5f352b25cbf64924cf8a52336e7abb404
Author: Jeroen Bakker
Date: Mon Feb 21 08:09:23 2022 +0100
Branches: temp-image-buffer-rasterizer
https://developer.blender.org/rB65b806d5f352b25cbf64924cf8a52336e7abb404
Fix glitches around mid vertex.
===================================================================
M source/blender/imbuf/IMB_rasterizer.hh
===================================================================
diff --git a/source/blender/imbuf/IMB_rasterizer.hh
b/source/blender/imbuf/IMB_rasterizer.hh
index 05752284f29..42e9a3dd18c 100644
--- a/source/blender/imbuf/IMB_rasterizer.hh
+++ b/source/blender/imbuf/IMB_rasterizer.hh
@@ -342,7 +342,9 @@ class Rasterizer {
std::array<VertexOutputType *, 3> sorted_vertices =
order_triangle_vertices(vertex_out);
const int min_v =
clamping_method.scanline_for(sorted_vertices[0]->coord[1]);
- const int mid_v =
clamping_method.scanline_for(sorted_vertices[1]->coord[1]);
+ const int mid_v =
+ clamping_method.scanline_for(sorted_vertices[1]->coord[1]) -
+
(clamping_method.distance_to_scanline_anchor(sorted_vertices[1]->coord[1]) ==
0.5 ? 0 : 1);
const int max_v =
clamping_method.scanline_for(sorted_vertices[2]->coord[1]) - 1;
/* left and right branch. */
@@ -389,7 +391,7 @@ class Rasterizer {
right += right_add;
}
- if (min_v == mid_v) {
+ if (min_v >= mid_v) {
if (sorted_vertices[0]->coord[0] > sorted_vertices[1]->coord[0]) {
left = *sorted_vertices[1];
}
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