perf(vg_lite): optimize label drawing efficiency (lvgl#6853)

Signed-off-by: pengyiqiang <[email protected]> Co-authored-by: pengyiqiang <[email protected]>
C47D · Sep 18, 2024 · b8f3d1e · b8f3d1e
1 parent eecb3c7
commit b8f3d1e
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Showing 3 changed files with 17 additions and 3 deletions.
diff --git a/src/draw/vg_lite/lv_draw_vg_lite_label.c b/src/draw/vg_lite/lv_draw_vg_lite_label.c
@@ -26,6 +26,14 @@
 
 #define PATH_QUALITY VG_LITE_HIGH
 #define PATH_DATA_COORD_FORMAT VG_LITE_S16
+
+#if LV_VG_LITE_FLUSH_MAX_COUNT > 0
+    #define PATH_FLUSH_COUNT_MAX 0
+#else
+    /* When using IDLE Flush mode, reduce the number of flushes */
+    #define PATH_FLUSH_COUNT_MAX 8
+#endif
+
 #define FT_F26DOT6_SHIFT 6
 
 /** After converting the font reference size, it is also necessary to scale the 26dot6 data
@@ -137,6 +145,12 @@ static void draw_letter_cb(lv_draw_unit_t * draw_unit, lv_draw_glyph_dsc_t * gly
     if(fill_draw_dsc && fill_area) {
         lv_draw_vg_lite_fill(draw_unit, fill_draw_dsc, fill_area);
     }
+
+    /* Flush in time to avoid accumulation of drawing commands */
+    u->letter_count++;
+    if(u->letter_count > PATH_FLUSH_COUNT_MAX) {
+        lv_vg_lite_flush(u);
+    }
 }
 
 static void draw_letter_bitmap(lv_draw_vg_lite_unit_t * u, const lv_draw_glyph_dsc_t * dsc)
@@ -289,9 +303,6 @@ static void draw_letter_outline(lv_draw_vg_lite_unit_t * u, const lv_draw_glyph_
                                &draw_matrix, VG_LITE_BLEND_SRC_OVER, lv_vg_lite_color(dsc->color, dsc->opa, true)));
     LV_PROFILER_END_TAG("vg_lite_draw");
 
-    /* Flush in time to avoid accumulation of drawing commands */
-    lv_vg_lite_flush(u);
-
     LV_PROFILER_END;
 }
 

diff --git a/src/draw/vg_lite/lv_draw_vg_lite_type.h b/src/draw/vg_lite/lv_draw_vg_lite_type.h
@@ -49,6 +49,7 @@ struct _lv_draw_vg_lite_unit_t {
     lv_cache_t * stroke_cache;
 
     uint16_t flush_count;
+    uint16_t letter_count;
     vg_lite_buffer_t target_buffer;
     vg_lite_matrix_t global_matrix;
     struct _lv_vg_lite_path_t * global_path;

diff --git a/src/draw/vg_lite/lv_vg_lite_utils.c b/src/draw/vg_lite/lv_vg_lite_utils.c
@@ -1175,6 +1175,7 @@ void lv_vg_lite_flush(struct _lv_draw_vg_lite_unit_t * u)
     LV_PROFILER_BEGIN;
 
     u->flush_count++;
+    u->letter_count = 0;
 
 #if LV_VG_LITE_FLUSH_MAX_COUNT
     if(u->flush_count < LV_VG_LITE_FLUSH_MAX_COUNT) {
@@ -1212,6 +1213,7 @@ void lv_vg_lite_finish(struct _lv_draw_vg_lite_unit_t * u)
     /* Clear image decoder dsc reference */
     lv_vg_lite_pending_remove_all(u->image_dsc_pending);
     u->flush_count = 0;
+    u->letter_count = 0;
     LV_PROFILER_END;
 }