mirror of https://github.com/0Nera/BMOSP.git
96 lines
3.1 KiB
C
96 lines
3.1 KiB
C
/**
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* fb.c
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* Функции управления фреймбуффером
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*
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* Функционал управления выводом на экранный буффер (фреймбуффер) текста и
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* изображений
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*
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*/
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#include <6x8_slim_font.h>
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#include <fb.h>
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#include <limine.h>
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#include <log.h>
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#include <stdarg.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <tool.h>
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static volatile struct limine_framebuffer_request framebuffer_request = {
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.id = LIMINE_FRAMEBUFFER_REQUEST, .revision = 0, .response = (struct limine_framebuffer_response *)0
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};
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static struct limine_framebuffer_response *framebuffer_response;
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static struct limine_framebuffer *boot_framebuffer;
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int fb_init_status = 0;
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uint32_t *fb_addr;
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uint32_t text_color = GREEN;
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uint32_t background = DARK_GREEN;
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uint64_t width;
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uint64_t height;
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uint64_t pitch;
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uint16_t bpp;
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uint64_t pos_x = 0;
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uint64_t pos_y = 0;
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// Настройка прослойки графики ядра
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void fb_init( ) {
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framebuffer_response = framebuffer_request.response;
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if (framebuffer_response == NULL) { return; }
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if (framebuffer_response->framebuffer_count < 1) { return; }
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fb_init_status = framebuffer_response->framebuffer_count;
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boot_framebuffer = framebuffer_response->framebuffers[0];
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fb_addr = (uint32_t *)boot_framebuffer->address;
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width = boot_framebuffer->width;
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height = boot_framebuffer->height;
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bpp = boot_framebuffer->bpp;
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pitch = boot_framebuffer->pitch;
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for (uint64_t i = 0; i < width * height; i++) { fb_addr[i] = background; }
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LOG("0x%x %ux%u\n", fb_addr, width, height);
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if (framebuffer_response->framebuffer_count == 1) { return; }
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LOG("Инициализация дополнительных: %u мониторов\n", framebuffer_response->framebuffer_count);
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for (uint64_t i = 1; i < framebuffer_response->framebuffer_count; i++) {
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struct limine_framebuffer *framebuffer = framebuffer_response->framebuffers[i];
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uint32_t *framebuffer_addr = (uint32_t *)framebuffer->address;
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LOG("[%u]->0x%x %ux%u\n", i, framebuffer->address, framebuffer->width, framebuffer->height);
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for (uint64_t ij = 0; ij < width * height; ij++) { framebuffer_addr[ij] = background; }
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}
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}
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// Отрисовка буффера по координатам (полезно для картинок)
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void fb_print_buf(uint64_t x, uint64_t y, uint64_t h, uint64_t w, uint32_t *buf) {
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for (uint64_t j = 0; j < h; j++) {
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for (uint64_t i = 0; i < w; i++) {
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uint64_t where = (i + x) + (j + y) * width;
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SCREEN_BUFFER[where] = buf[i + j * w];
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}
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}
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}
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void fb_print_bits(size_t x, size_t y, uint8_t num) {
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for (size_t i = 0; i <= 7; i++) {
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if ((num >> i) & 1) { SCREEN_BUFFER[x + i + y * SCREEN_WIDTH] = text_color; }
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}
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}
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void scroll_fb( ) {
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size_t last_line_index = (SCREEN_HEIGHT - (FONT_6X8_SLIM_CHAR_HEIGHT)) * SCREEN_WIDTH;
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for (uint64_t y = 0; y < SCREEN_HEIGHT - (FONT_6X8_SLIM_CHAR_HEIGHT); y++) {
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for (uint64_t x = 0; x < SCREEN_WIDTH; x++) {
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SCREEN_BUFFER[x + y * SCREEN_WIDTH] = SCREEN_BUFFER[x + (y + (FONT_6X8_SLIM_CHAR_HEIGHT)) * SCREEN_WIDTH];
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}
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}
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for (uint64_t i = last_line_index; i < SCREEN_HEIGHT * SCREEN_WIDTH; i++) { SCREEN_BUFFER[i] = background; }
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} |