[Bf-blender-cvs] [8db9d6bd6bd] temp-image-engine: Add back UDIM support.

[Jeroen Bakker]

Commit: 8db9d6bd6bd8ff235c8ec9da08fe69befbc7800a
Author: Jeroen Bakker
Date:   Wed Dec 7 15:01:17 2022 +0100
Branches: temp-image-engine
https://developer.blender.org/rB8db9d6bd6bd8ff235c8ec9da08fe69befbc7800a

Add back UDIM support.

===================================================================

M	source/blender/draw/engines/image/image_drawing_mode.hh

===================================================================

diff --git a/source/blender/draw/engines/image/image_drawing_mode.hh b/source/blender/draw/engines/image/image_drawing_mode.hh
index 05004bed53c..b2b6276dc8a 100644
--- a/source/blender/draw/engines/image/image_drawing_mode.hh
+++ b/source/blender/draw/engines/image/image_drawing_mode.hh
@@ -33,10 +33,6 @@ struct FullScreenTextures {
 
   /**
    * \brief Update the uv and region bounds of all texture_infos of instance_data.
-   *
-   * - calculate the uv span of the area.
-   * - compare the uv span with the uv span of a single texture to determine if the textures should
-   * be regenerated.
    */
   void update_bounds(const ARegion *region)
   {
@@ -472,13 +468,12 @@ template<typename TextureMethod> class ScreenSpaceDrawingMode : public AbstractD
     rctf texture_area;
     rctf tile_area;
 
-    // TODO add tile size.
     BLI_rctf_init(&texture_area, 0.0, texture_width, 0.0, texture_height);
     BLI_rctf_init(&tile_area,
-                  tile_buffer.x * texture_info.clipping_uv_bounds.xmin,
-                  tile_buffer.x * texture_info.clipping_uv_bounds.xmax,
-                  tile_buffer.y * texture_info.clipping_uv_bounds.ymin,
-                  tile_buffer.y * texture_info.clipping_uv_bounds.ymax);
+                  tile_buffer.x * (texture_info.clipping_uv_bounds.xmin - image_tile.get_tile_x_offset()),
+                  tile_buffer.x * (texture_info.clipping_uv_bounds.xmax - image_tile.get_tile_x_offset()),
+                  tile_buffer.y * (texture_info.clipping_uv_bounds.ymin - image_tile.get_tile_y_offset()),
+                  tile_buffer.y * (texture_info.clipping_uv_bounds.ymax - image_tile.get_tile_y_offset()));
     BLI_rctf_transform_calc_m4_pivot_min(&tile_area, &texture_area, uv_to_texel.ptr());
     invert_m4(uv_to_texel.ptr());