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