UDIM: Add support for packing inside .blend files

This completes support for tiled texture packing on the Blender / Cycles
side of things.

Most of these changes fall into one of three categories:
- Updating Image handling code to pack/unpack tiled and multi-view images
- Updating Cycles to handle tiled textures through BlenderImageLoader
- Updating OSL to properly handle textures with multiple slots

Differential Revision: https://developer.blender.org/D14395

1 files changed, 7 insertions, 1 deletions

diff --git a/intern/cycles/blender/image.h b/intern/cycles/blender/image.h
index ee576b31f7e..c2cc0f51b9b 100644
--- a/intern/cycles/blender/image.h
+++ b/intern/cycles/blender/image.h
@@ -12,7 +12,10 @@ CCL_NAMESPACE_BEGIN
 
 class BlenderImageLoader : public ImageLoader {
  public:
-  BlenderImageLoader(BL::Image b_image, const int frame, const bool is_preview_render);
+  BlenderImageLoader(BL::Image b_image,
+                     const int frame,
+                     const int tile_number,
+                     const bool is_preview_render);
 
   bool load_metadata(const ImageDeviceFeatures &features, ImageMetaData &metadata) override;
   bool load_pixels(const ImageMetaData &metadata,
@@ -22,8 +25,11 @@ class BlenderImageLoader : public ImageLoader {
   string name() const override;
   bool equals(const ImageLoader &other) const override;
 
+  int get_tile_number() const override;
+
   BL::Image b_image;
   int frame;
+  int tile_number;
   bool free_cache;
 };