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--- a/drv_generic_graphic.c
+++ b/drv_generic_graphic.c
@@ -24,7 +24,7 @@
*
*/
-/*
+/*
*
* exported functions:
*
@@ -98,6 +98,9 @@ static int INVERTED = 0;
/* must be implemented by the real driver */
void (*drv_generic_graphic_real_blit) () = NULL;
+/* can be implemented by the real driver */
+void (*drv_generic_graphic_real_clear) () = NULL;
+
/****************************************/
/*** generic Framebuffer stuff ***/
@@ -691,7 +694,10 @@ int drv_generic_graphic_clear(void)
for (i = 0; i < LCOLS * LROWS; i++)
drv_generic_graphic_FB[l][i] = NO_COL;
- drv_generic_graphic_blit(0, 0, LROWS, LCOLS);
+ if (drv_generic_graphic_real_clear)
+ drv_generic_graphic_real_clear(NO_COL);
+ else
+ drv_generic_graphic_blit(0, 0, LROWS, LCOLS);
return 0;
}
--- a/drv_generic_graphic.h
+++ b/drv_generic_graphic.h
@@ -40,6 +40,9 @@ extern RGBA NO_COL; /* no color (comple
/* these functions must be implemented by the real driver */
extern void (*drv_generic_graphic_real_blit) (const int row, const int col, const int height, const int width);
+/* these functions can be implemented by the real driver */
+extern void (*drv_generic_graphic_real_clear) (const RGBA rgba);
+
/* helper function to get pixel color or gray value */
extern RGBA drv_generic_graphic_rgb(const int row, const int col);
extern unsigned char drv_generic_graphic_gray(const int row, const int col);
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