Revision 105
set pixel function
| graphics.c | ||
|---|---|---|
| 69 | 69 |
return vbe_mem_info.BitsPerPixel; |
| 70 | 70 |
} |
| 71 | 71 |
|
| 72 |
uint16_t get_bytes_pixel(void) {
|
|
| 73 |
return (vbe_mem_info.BitsPerPixel + 7) >> 3; |
|
| 74 |
} |
|
| 75 |
|
|
| 72 | 76 |
int (map_vram)(void) {
|
| 73 | 77 |
int r; |
| 74 | 78 |
unsigned int vram_base = get_phys_addr(); |
| ... | ... | |
| 88 | 92 |
return !lm_free(&mem_map); |
| 89 | 93 |
} |
| 90 | 94 |
|
| 95 |
int (set_pixel)(uint16_t row, uint16_t col, uint32_t color) {
|
|
| 96 |
if (row >= vbe_mem_info.XResolution || col >= vbe_mem_info.YResolution) {
|
|
| 97 |
printf("%s: invalid pixel.\n", __func__);
|
|
| 98 |
return OUT_OF_RANGE; |
|
| 99 |
} |
|
| 100 |
unsigned int pos = (row + col * vbe_mem_info.XResolution) * get_bytes_pixel(); |
|
| 101 |
memcpy((void*)(video_mem + pos), &color, get_bytes_pixel()); |
|
| 102 |
return SUCCESS; |
|
| 103 |
} |
|
| 104 |
|
|
| 91 | 105 |
int (set_graphics_mode)(uint16_t mode) {
|
| 92 | 106 |
struct reg86 reg_86; |
| 93 | 107 |
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