DRW: Add uniform name recording in debug mode.

source/blender/draw/intern/draw_manager.h

@@ -182,6 +182,8 @@ typedef enum {
 	DRW_UNIFORM_BLOCK_PERSIST
 } DRWUniformType;
 
+#define MAX_UNIFORM_NAME 13
+
 struct DRWUniform {
 	DRWUniform *next; /* single-linked list */
 	union {
@@ -195,6 +197,9 @@ struct DRWUniform {
 	char type; /* DRWUniformType */
 	char length; /* cannot be more than 16 */
 	char arraysize; /* cannot be more than 16 too */
+#ifndef NDEBUG
+	char name[MAX_UNIFORM_NAME];
+#endif
 };
 
 typedef enum {

source/blender/draw/intern/draw_manager_data.c

@@ -132,6 +132,11 @@ static void drw_shgroup_uniform(DRWShadingGroup *shgroup, const char *name,
 	BLI_assert(length >= 0 && length <= 16);
 
 	drw_shgroup_uniform_create_ex(shgroup, location, type, value, length, arraysize);
+
+#ifndef NDEBUG
+	/* Save uniform name to easily identify it when debugging. */
+	BLI_strncpy(shgroup->uniforms->name, name, MAX_UNIFORM_NAME);
+#endif
 }
 
 void DRW_shgroup_uniform_texture(DRWShadingGroup *shgroup, const char *name, const GPUTexture *tex)