2 files changed, 16 insertions, 4 deletions
diff --git a/source/blender/makesdna/DNA_gpencil_modifier_types.h b/source/blender/makesdna/DNA_gpencil_modifier_types.h
index 410212ce100..3977ad326da 100644
--- a/source/blender/makesdna/DNA_gpencil_modifier_types.h
+++ b/source/blender/makesdna/DNA_gpencil_modifier_types.h
@@ -878,6 +878,7 @@ typedef enum eLineArtGPencilModifierFlags {
   LRT_GPENCIL_MATCH_OUTPUT_VGROUP = (1 << 1),
   LRT_GPENCIL_BINARY_WEIGHTS = (1 << 2) /* Deprecated, this is removed for lack of use case. */,
   LRT_GPENCIL_IS_BAKED = (1 << 3),
+  LRT_GPENCIL_USE_CACHE = (1 << 4),
 } eLineArtGPencilModifierFlags;
 
 typedef enum eLineartGpencilTransparencyFlags {
@@ -886,6 +887,8 @@ typedef enum eLineartGpencilTransparencyFlags {
   LRT_GPENCIL_TRANSPARENCY_MATCH = (1 << 1),
 } eLineartGpencilTransparencyFlags;
 
+struct LineartCache;
+
 typedef struct LineartGpencilModifierData {
   GpencilModifierData modifier;
 
@@ -925,16 +928,24 @@ typedef struct LineartGpencilModifierData {
   /* CPU mode */
   float chaining_image_threshold;
 
-  int _pad;
-
   /* Ported from SceneLineArt flags. */
   int calculation_flags;
 
   /* Additional Switches. */
   int flags;
 
-  /* Runtime only. */
-  void *render_buffer;
+  /* Runtime data. */
+
+  /* Because we can potentially only compute features lines once per modifier stack (Use Cache), we
+   * need to have these override values to ensure that we have the data we need is computed and
+   * stored in the cache. */
+  char level_start_override;
+  char level_end_override;
+  short edge_types_override;
+
+  struct LineartCache *cache;
+  /* Keep a pointer to the render buffer so we can call destroy from ModifierData. */
+  struct LineartRenderBuffer *render_buffer_ptr;
 
 } LineartGpencilModifierData;
 
diff --git a/source/blender/makesdna/DNA_gpencil_types.h b/source/blender/makesdna/DNA_gpencil_types.h
index ea3c1ff7275..6b7b89e91fa 100644
--- a/source/blender/makesdna/DNA_gpencil_types.h
+++ b/source/blender/makesdna/DNA_gpencil_types.h
@@ -629,6 +629,7 @@ typedef struct bGPdata_Runtime {
   /** Brush pointer */
   Brush *sbuffer_brush;
   struct GpencilBatchCache *gpencil_cache;
+  struct LineartCache *lineart_cache;
 } bGPdata_Runtime;
 
 /* grid configuration */