GPencil: Reduce VBO memory footprint when using modifiers

Before, the modifiers were evaluated in Draw Engine and this required to calculate a factor to increase the VBO size.

Now, the modifiers are evaluated in Depsgraph and the Draw Engine receives the evaluated stroke with the final number of vertices. As the number of vertices is the final value already, if Draw Manager increases the number with the modifiers only increases the memory with empty space because never would be used. This commit removes this double calculation, reducing the memory usage and removes a loop to calculate the size by modifier too.

Also, the function getDuplicationFactor() has been removed because is not required anymore.

1 files changed, 0 insertions, 6 deletions

diff --git a/source/blender/blenkernel/BKE_gpencil_modifier.h b/source/blender/blenkernel/BKE_gpencil_modifier.h
index 918f85d146c..9cbc7d05ac2 100644
--- a/source/blender/blenkernel/BKE_gpencil_modifier.h
+++ b/source/blender/blenkernel/BKE_gpencil_modifier.h
@@ -261,12 +261,6 @@ typedef struct GpencilModifierTypeInfo {
                          struct Object *ob,
                          GreasePencilTexWalkFunc walk,
                          void *userData);
-
-  /**
-   * Get the number of times the strokes are duplicated in this modifier.
-   * This is used to calculate the size of the GPU VBOs
-   */
-  int (*getDuplicationFactor)(struct GpencilModifierData *md);
 } GpencilModifierTypeInfo;
 
 /* Initialize modifier's global data (type info and some common global storages). */