GPU: automatically draw images with GLSL shader depending on resolution

This adds a new "Automatic" image display method which uses GLSL shaders for
most images. It only does CPU side color management for higher res images
where sending big float buffers to the GPU is likely to be a bottleneck or
cause memory usage problem.

Automatic is the default now, previously it was 2D Texture.

1 files changed, 6 insertions, 3 deletions

diff --git a/source/blender/blenloader/intern/versioning_userdef.c b/source/blender/blenloader/intern/versioning_userdef.c
index 65a19ca80c1..069b1907cce 100644
--- a/source/blender/blenloader/intern/versioning_userdef.c
+++ b/source/blender/blenloader/intern/versioning_userdef.c
@@ -491,6 +491,12 @@ void BLO_version_defaults_userpref_blend(Main *bmain, UserDef *userdef)
     userdef->move_threshold = 2;
   }
 
+  if (!USER_VERSION_ATLEAST(280, 58)) {
+    if (userdef->image_draw_method != IMAGE_DRAW_METHOD_GLSL) {
+      userdef->image_draw_method = IMAGE_DRAW_METHOD_AUTO;
+    }
+  }
+
   /**
    * Include next version bump.
    */
@@ -505,9 +511,6 @@ void BLO_version_defaults_userpref_blend(Main *bmain, UserDef *userdef)
   if (userdef->pixelsize == 0.0f)
     userdef->pixelsize = 1.0f;
 
-  if (userdef->image_draw_method == 0)
-    userdef->image_draw_method = IMAGE_DRAW_METHOD_2DTEXTURE;
-
   for (bTheme *btheme = userdef->themes.first; btheme; btheme = btheme->next) {
     do_versions_theme(userdef, btheme);
   }