63 lines
1.3 KiB
C
63 lines
1.3 KiB
C
#define DONT_DECLARE_FRAMEBUFFER 1
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#include "framebuffer.h"
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FRAMEBUFFER;
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#if FB_DEPTH==1
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void fb_fill(uint8_t c) {
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memset(framebuffer, c, sizeof(framebuffer[0][0]) * FB_HEIGHT * FB_WIDTH_BYTES);
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}
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void fb_shift(uint16_t newcol) {
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int x, y;
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uint8_t transfer = 0, tmp = 0;
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for (y = 0; y < FB_HEIGHT; y++) {
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for (x = FB_WIDTH_BYTES - 1; x >= 0; x--) {
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tmp = transfer;
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transfer = (framebuffer[y][x] & 1);
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framebuffer[y][x] = (framebuffer[y][x] >> 1) | (tmp << 7);
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}
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transfer = 0;
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FB_SET(FB_WIDTH - 1, y, newcol & 1);
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newcol = newcol >> 1;
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}
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}
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#elif FB_DEPTH==8
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void fb_fill(uint8_t c) {
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memset(framebuffer, c, sizeof(framebuffer[0][0]) * FB_HEIGHT * FB_WIDTH);
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}
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#endif
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void fb_hline(uint8_t y, uint8_t x1, uint8_t x2, uint8_t c) {
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uint8_t i;
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for (i = x1; i <= x2; i++) {
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FB_SET(i, y, c);
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}
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}
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void fb_vline(uint8_t x, uint8_t y1, uint8_t y2, uint8_t c) {
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uint8_t i;
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for (i = y1; i <= y2; i++) {
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FB_SET(x, i, c);
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}
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}
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void fb_box(uint8_t ax, uint8_t ay, uint8_t bx, uint8_t by, uint8_t c) {
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fb_hline(ay, ax, bx, c);
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fb_hline(by, ax, bx, c);
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fb_vline(ax, ay, by, c);
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fb_vline(bx, ay, by, c);
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}
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void fb_area(uint8_t ax, uint8_t ay, uint8_t bx, uint8_t by, uint8_t c) {
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uint8_t i;
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for (i = ay; i <= by; i++) {
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fb_hline(i, ax, bx, c);
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}
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}
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