UI: Theme options for checkerboard pattern colors and size

This patch adds ability to set up colors and size of background
(transparency) checkerboard pattern in viewport and 2d editors. No new
backgrounds, only changing colors in existing ones.

This is not the background of the viewport, it is a transparency
checkerboard that is turned on only in render mode, when the
transparency mode is on. And also in 2D-editors, (image, sequencer,
etc).

Reviewed By: Pablo Vazquez, Julian Eisel

Differential Revision: https://developer.blender.org/D6791

1 files changed, 4 insertions, 3 deletions

diff --git a/source/blender/draw/intern/draw_common.h b/source/blender/draw/intern/draw_common.h
index 5818d84a7af..f14cdc0dbde 100644
--- a/source/blender/draw/intern/draw_common.h
+++ b/source/blender/draw/intern/draw_common.h
@@ -82,8 +82,8 @@ typedef struct GlobalsUboStorage {
 
   float colorBackground[4];
   float colorBackgroundGradient[4];
-  float colorCheckerLow[4];
-  float colorCheckerHigh[4];
+  float colorCheckerPrimary[4];
+  float colorCheckerSecondary[4];
   float colorClippingBorder[4];
   float colorEditMeshMiddle[4];
 
@@ -148,8 +148,9 @@ typedef struct GlobalsUboStorage {
   float sizePixel, pixelFac;
   float sizeObjectCenter, sizeLightCenter, sizeLightCircle, sizeLightCircleShadow;
   float sizeVertex, sizeEdge, sizeEdgeFix, sizeFaceDot;
+  float sizeChecker;
 
-  float pad_globalsBlock[2];
+  float pad_globalsBlock;
 } GlobalsUboStorage;
 /* Keep in sync with globalsBlock in shaders */
 BLI_STATIC_ASSERT_ALIGN(GlobalsUboStorage, 16)