UI: Adaptive HDRI preview resolution

HDRI preview should have resolution dependent on dpi, viewport scale and HDRI gizmo size.
This patch uses a LOD to render a more round sphere.

Reviewed By: Jeroen Bakker

Differential Revision: https://developer.blender.org/D9382

1 files changed, 11 insertions, 1 deletions

diff --git a/source/blender/draw/intern/draw_cache.h b/source/blender/draw/intern/draw_cache.h
index 5da9f4b7964..afbf9903dbc 100644
--- a/source/blender/draw/intern/draw_cache.h
+++ b/source/blender/draw/intern/draw_cache.h
@@ -32,6 +32,15 @@ struct Volume;
 struct VolumeGrid;
 struct bGPDstroke;
 
+/* Shape resolution level of detail */
+typedef enum eDRWLevelOfDetail {
+  DRW_LOD_LOW = 0,
+  DRW_LOD_MEDIUM = 1,
+  DRW_LOD_HIGH = 2,
+
+  DRW_LOD_MAX, /* Max number of level of detail */
+} eDRWLevelOfDetail;
+
 void DRW_shape_cache_free(void);
 
 /* 3D cursor */
@@ -44,9 +53,10 @@ struct GPUBatch *DRW_cache_fullscreen_quad_get(void);
 struct GPUBatch *DRW_cache_quad_get(void);
 struct GPUBatch *DRW_cache_quad_wires_get(void);
 struct GPUBatch *DRW_cache_cube_get(void);
-struct GPUBatch *DRW_cache_sphere_get(void);
 struct GPUBatch *DRW_cache_normal_arrow_get(void);
 
+struct GPUBatch *DRW_cache_sphere_get(const eDRWLevelOfDetail level_of_detail);
+
 /* Dummy VBOs */
 struct GPUBatch *DRW_gpencil_dummy_buffer_get(void);