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Implement "hardware" fills

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Implement hardware fills by drawing on the framebuffer. This provides a
significant performance boost for filled geometric primitives and a
small one for font drawing.  Tested at all orientations.
This commit is contained in:
ergosys 2014-12-13 14:44:53 -08:00
parent d3b3020a07
commit 555fda2170
2 changed files with 41 additions and 0 deletions
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40
drivers/gdisp/SSD1306/gdisp_lld_SSD1306.c
View File

@ -166,6 +166,46 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
}
#endif
#if GDISP_HARDWARE_FILLS
LLDSPEC void gdisp_lld_fill_area(GDisplay *g) {
coord_t sy = g->p.y;
coord_t ey = sy + g->p.cy - 1;
coord_t sx = g->p.x;
coord_t ex = g->p.x + g->p.cx - 1;
if (g->g.Orientation == GDISP_ROTATE_90 || g->g.Orientation == GDISP_ROTATE_270) {
coord_t tmp;
tmp = sx; sx = sy; sy = tmp;
tmp = ex; ex = ey; ey = tmp;
}
unsigned spage = sy / 8;
uint8_t * base = RAM(g) + GDISP_SCREEN_WIDTH * spage;
uint8_t mask = 0xff << (sy&7);
unsigned zpages = (ey / 8) - spage;
coord_t col;
if (gdispColor2Native(g->p.color)==Black) {
while (zpages--) {
for (col = sx; col <= ex; col++)
base[col] &= ~mask;
mask = 0xff;
base += GDISP_SCREEN_WIDTH;
}
mask &= (0xff >> (7 - (ey&7)));
for (col = sx; col <= ex; col++)
base[col] &= ~mask;
} else {
while (zpages--) {
for (col = sx; col <= ex; col++)
base[col] |= mask;
mask = 0xff;
base += GDISP_SCREEN_WIDTH;
}
mask &= (0xff >> (7 - (ey&7)));
for (col = sx; col <= ex; col++)
base[col] |= mask;
}
}
#endif
#if GDISP_HARDWARE_DRAWPIXEL
LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g) {
coord_t x = g->p.x;

1
drivers/gdisp/SSD1306/gdisp_lld_config.h
View File

@ -19,6 +19,7 @@
#define GDISP_HARDWARE_PIXELREAD TRUE
#define GDISP_HARDWARE_CONTROL TRUE
#define GDISP_HARDWARE_CLEARS TRUE
#define GDISP_HARDWARE_FILLS TRUE
#define GDISP_LLD_PIXELFORMAT GDISP_PIXELFORMAT_MONO