/* * Copyright (c) 2008 Martin Decky * Copyright (c) 2006 Jakub Vana * Copyright (c) 2006 Ondrej Palkovsky * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * - The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** @file */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "../gfx/font-8x16.h" #include "../fb.h" #include "kfb.h" #define DEFAULT_BGCOLOR 0xffffff #define DEFAULT_FGCOLOR 0x000000 #define FB_POS(x, y) ((y) * kfb.scanline + (x) * kfb.pixel_bytes) #define COL2X(col) ((col) * FONT_WIDTH) #define ROW2Y(row) ((row) * FONT_SCANLINES) #define X2COL(x) ((x) / FONT_WIDTH) #define Y2ROW(y) ((y) / FONT_SCANLINES) #define GLYPH_POS(glyph, y, inverted) \ (((glyph) + (inverted) * FONT_GLYPHS) * (kfb.glyph_bytes) + (y) * (kfb.glyph_scanline)) #define POINTER_WIDTH 11 #define POINTER_HEIGHT 18 static uint8_t pointer[] = { 0x01, 0x00, 0x03, 0x00, 0x05, 0x00, 0x09, 0x00, 0x11, 0x00, 0x21, 0x00, 0x41, 0x00, 0x81, 0x00, 0x01, 0x01, 0x01, 0x02, 0x01, 0x04, 0x01, 0x03, 0x81, 0x00, 0x89, 0x00, 0x15, 0x01, 0x23, 0x01, 0x21, 0x01, 0xc0, 0x00 }; static uint8_t pointer_mask[] = { 0x01, 0x00, 0x03, 0x00, 0x07, 0x00, 0x0f, 0x00, 0x1f, 0x00, 0x3f, 0x00, 0x7f, 0x00, 0xff, 0x00, 0xff, 0x01, 0xff, 0x03, 0xff, 0x07, 0xff, 0x03, 0xff, 0x00, 0xff, 0x00, 0xf7, 0x01, 0xe3, 0x01, 0xe1, 0x01, 0xc0, 0x00 }; /** Function to draw a character. */ typedef void (*draw_char_t)(sysarg_t, sysarg_t, bool, wchar_t, pixel_t, pixel_t); typedef struct { sysarg_t width; sysarg_t height; size_t offset; size_t scanline; visual_t visual; size_t size; uint8_t *addr; pixel2visual_t pixel2visual; visual2pixel_t visual2pixel; visual_mask_t visual_mask; size_t pixel_bytes; sysarg_t pointer_x; sysarg_t pointer_y; bool pointer_visible; imgmap_t *pointer_imgmap; /* * Pre-rendered mask for rendering * glyphs. Specific for the framebuffer * visual. */ size_t glyph_scanline; size_t glyph_bytes; uint8_t *glyphs; uint8_t *backbuf; } kfb_t; typedef struct { /** * Character drawing function for this viewport. * Different viewports might use different drawing * functions depending on whether their scanlines * are aligned on a word boundary. */ draw_char_t draw_char; } kfb_vp_t; static kfb_t kfb; static pixel_t color_table[16] = { [COLOR_BLACK] = 0x000000, [COLOR_BLUE] = 0x0000f0, [COLOR_GREEN] = 0x00f000, [COLOR_CYAN] = 0x00f0f0, [COLOR_RED] = 0xf00000, [COLOR_MAGENTA] = 0xf000f0, [COLOR_YELLOW] = 0xf0f000, [COLOR_WHITE] = 0xf0f0f0, [COLOR_BLACK + 8] = 0x000000, [COLOR_BLUE + 8] = 0x0000ff, [COLOR_GREEN + 8] = 0x00ff00, [COLOR_CYAN + 8] = 0x00ffff, [COLOR_RED + 8] = 0xff0000, [COLOR_MAGENTA + 8] = 0xff00ff, [COLOR_YELLOW + 8] = 0xffff00, [COLOR_WHITE + 8] = 0xffffff, }; static void put_pixel(sysarg_t x, sysarg_t y, pixel_t pixel) { if ((x >= kfb.width) || (y >= kfb.height)) return; kfb.pixel2visual(kfb.addr + FB_POS(x, y), pixel); } static pixel_t get_pixel(sysarg_t x, sysarg_t y) { if ((x >= kfb.width) || (y >= kfb.height)) return 0; return kfb.visual2pixel(kfb.addr + FB_POS(x, y)); } static void pointer_show(void) { if (kfb.pointer_visible) { for (sysarg_t y = 0; y < POINTER_HEIGHT; y++) { for (sysarg_t x = 0; x < POINTER_WIDTH; x++) { sysarg_t dx = kfb.pointer_x + x; sysarg_t dy = kfb.pointer_y + y; pixel_t pixel = get_pixel(dx, dy); imgmap_put_pixel(kfb.pointer_imgmap, x, y, pixel); size_t offset = y * ((POINTER_WIDTH - 1) / 8 + 1) + x / 8; bool visible = pointer_mask[offset] & (1 << (x % 8)); if (visible) { pixel = (pointer[offset] & (1 << (x % 8))) ? 0x000000 : 0xffffff; put_pixel(dx, dy, pixel); } } } } } static void pointer_hide(void) { if (kfb.pointer_visible) { for (sysarg_t y = 0; y < POINTER_HEIGHT; y++) { for (sysarg_t x = 0; x < POINTER_WIDTH; x++) { sysarg_t dx = kfb.pointer_x + x; sysarg_t dy = kfb.pointer_y + y; pixel_t pixel = imgmap_get_pixel(kfb.pointer_imgmap, x, y); put_pixel(dx, dy, pixel); } } } } /** Draw a filled rectangle. * */ static void draw_filled_rect(sysarg_t x1, sysarg_t y1, sysarg_t x2, sysarg_t y2, pixel_t color) { if ((y1 >= y2) || (x1 >= x2)) return; uint8_t cbuf[4]; kfb.pixel2visual(cbuf, color); for (sysarg_t y = y1; y < y2; y++) { uint8_t *dst = kfb.addr + FB_POS(x1, y); for (sysarg_t x = x1; x < x2; x++) { memcpy(dst, cbuf, kfb.pixel_bytes); dst += kfb.pixel_bytes; } } } static void vp_put_pixel(fbvp_t *vp, sysarg_t x, sysarg_t y, pixel_t pixel) { put_pixel(vp->x + x, vp->y + y, pixel); } static void attrs_rgb(char_attrs_t attrs, pixel_t *bgcolor, pixel_t *fgcolor) { switch (attrs.type) { case CHAR_ATTR_STYLE: switch (attrs.val.style) { case STYLE_NORMAL: *bgcolor = color_table[COLOR_WHITE]; *fgcolor = color_table[COLOR_BLACK]; break; case STYLE_EMPHASIS: *bgcolor = color_table[COLOR_WHITE]; *fgcolor = color_table[COLOR_RED]; break; case STYLE_INVERTED: *bgcolor = color_table[COLOR_BLACK]; *fgcolor = color_table[COLOR_WHITE]; break; case STYLE_SELECTED: *bgcolor = color_table[COLOR_RED]; *fgcolor = color_table[COLOR_WHITE]; break; } break; case CHAR_ATTR_INDEX: *bgcolor = color_table[(attrs.val.index.bgcolor & 7) | ((attrs.val.index.attr & CATTR_BRIGHT) ? 8 : 0)]; *fgcolor = color_table[(attrs.val.index.fgcolor & 7) | ((attrs.val.index.attr & CATTR_BRIGHT) ? 8 : 0)]; break; case CHAR_ATTR_RGB: *bgcolor = attrs.val.rgb.bgcolor; *fgcolor = attrs.val.rgb.fgcolor; break; } } /** Draw a character, takes advantage of alignment. * * This version can only be used if the following conditions are met: * * - word size is divisible by pixel_bytes * - cell scanline size is divisible by word size * - cell scanlines are word-aligned * * It makes use of the pre-rendered mask to process (possibly) several * pixels at once (word size / pixel_bytes pixels at a time are processed) * making it very fast. Most notably this version is not applicable at 24 bits * per pixel. * * @param x X coordinate of top-left corner on screen. * @param y Y coordinate of top-left corner on screen. * @param inverted Draw inverted character. * @param ch Character to draw. * @param bgcolor Background color. * @param fbgcolor Foreground color. * */ static void draw_char_aligned(sysarg_t x, sysarg_t y, bool inverted, wchar_t ch, pixel_t bgcolor, pixel_t fgcolor) { size_t word_size = sizeof(unsigned long); /* * Prepare a pair of words, one filled with foreground-color * pattern and the other filled with background-color pattern. */ unsigned long fg_buf; unsigned long bg_buf; for (size_t i = 0; i < word_size / kfb.pixel_bytes; i++) { kfb.pixel2visual(&((uint8_t *) &bg_buf)[i * kfb.pixel_bytes], bgcolor); kfb.pixel2visual(&((uint8_t *) &fg_buf)[i * kfb.pixel_bytes], fgcolor); } /* Pointer to the current position in the mask. */ unsigned long *maskp = (unsigned long *) &kfb.glyphs[GLYPH_POS( fb_font_glyph(ch), 0, inverted)]; /* Pointer to the current position on the screen. */ unsigned long *dst = (unsigned long *) &kfb.addr[FB_POS(x, y)]; /* Width of the character cell in words. */ size_t ww = FONT_WIDTH * kfb.pixel_bytes / word_size; /* Offset to add when moving to another screen scanline. */ size_t d_add = kfb.scanline - FONT_WIDTH * kfb.pixel_bytes; for (size_t yd = 0; yd < FONT_SCANLINES; yd++) { /* * Now process the cell scanline, combining foreground * and background color patters using the pre-rendered mask. */ for (size_t i = 0; i < ww; i++) { unsigned long mask = *maskp++; *dst++ = (fg_buf & mask) | (bg_buf & ~mask); } /* Move to the beginning of the next scanline of the cell. */ dst = (unsigned long *) ((uint8_t *) dst + d_add); } } /** Draw a character, fallback version. * * This version does not make use of the pre-rendered mask, it uses * the font bitmap directly. It works always, but it is slower. * * @param x X coordinate of top-left corner on screen. * @param y Y coordinate of top-left corner on screen. * @param inverted Draw inverted character. * @param ch Character to draw. * @param bgcolor Background color. * @param fgcolor Foreground color. * */ static void draw_char_fallback(sysarg_t x, sysarg_t y, bool inverted, wchar_t ch, pixel_t bgcolor, pixel_t fgcolor) { /* Character glyph */ uint16_t glyph = fb_font_glyph(ch); /* Pre-render the foreground and background color pixels. */ uint8_t fg_buf[4]; uint8_t bg_buf[4]; if (inverted) { kfb.pixel2visual(bg_buf, fgcolor); kfb.pixel2visual(fg_buf, bgcolor); } else { kfb.pixel2visual(bg_buf, bgcolor); kfb.pixel2visual(fg_buf, fgcolor); } /* Pointer to the current position on the screen. */ uint8_t *dst = (uint8_t *) &kfb.addr[FB_POS(x, y)]; /* Offset to add when moving to another screen scanline. */ size_t d_add = kfb.scanline - FONT_WIDTH * kfb.pixel_bytes; for (size_t yd = 0; yd < FONT_SCANLINES; yd++) { /* Byte containing bits of the glyph scanline. */ uint8_t byte = fb_font[glyph][yd]; for (size_t i = 0; i < FONT_WIDTH; i++) { /* Choose color based on the current bit. */ uint8_t *src = (byte & 0x80) ? fg_buf : bg_buf; /* Copy the pixel. */ for (size_t j = 0; j < kfb.pixel_bytes; j++) *dst++ = *src++; /* Move to the next bit. */ byte <<= 1; } /* Move to the beginning of the next scanline of the cell. */ dst += d_add; } } /** Draw the character at the specified position in viewport. * * @param vp Viewport. * @param col Screen position relative to viewport. * @param row Screen position relative to viewport. * */ static void draw_vp_char(fbvp_t *vp, sysarg_t col, sysarg_t row) { kfb_vp_t *kfb_vp = (kfb_vp_t *) vp->data; sysarg_t x = vp->x + COL2X(col); sysarg_t y = vp->y + ROW2Y(row); charfield_t *field = screenbuffer_field_at(vp->backbuf, col, row); pixel_t bgcolor = 0; pixel_t fgcolor = 0; attrs_rgb(field->attrs, &bgcolor, &fgcolor); bool inverted = (vp->cursor_flash) && screenbuffer_cursor_at(vp->backbuf, col, row); (*kfb_vp->draw_char)(x, y, inverted, field->ch, bgcolor, fgcolor); } static int kfb_yield(fbdev_t *dev) { if (kfb.backbuf == NULL) { kfb.backbuf = malloc(kfb.width * kfb.height * kfb.pixel_bytes); if (kfb.backbuf == NULL) return ENOMEM; } for (sysarg_t y = 0; y < kfb.height; y++) memcpy(kfb.backbuf + y * kfb.width * kfb.pixel_bytes, kfb.addr + FB_POS(0, y), kfb.width * kfb.pixel_bytes); return EOK; } static int kfb_claim(fbdev_t *dev) { if (kfb.backbuf == NULL) return ENOENT; for (sysarg_t y = 0; y < kfb.height; y++) memcpy(kfb.addr + FB_POS(0, y), kfb.backbuf + y * kfb.width * kfb.pixel_bytes, kfb.width * kfb.pixel_bytes); return EOK; } static void kfb_pointer_update(struct fbdev *dev, sysarg_t x, sysarg_t y, bool visible) { pointer_hide(); kfb.pointer_x = x; kfb.pointer_y = y; kfb.pointer_visible = visible; pointer_show(); } static int kfb_get_resolution(fbdev_t *dev, sysarg_t *width, sysarg_t *height) { *width = kfb.width; *height = kfb.height; return EOK; } static void kfb_font_metrics(fbdev_t *dev, sysarg_t width, sysarg_t height, sysarg_t *cols, sysarg_t *rows) { *cols = X2COL(width); *rows = Y2ROW(height); } static int kfb_vp_create(fbdev_t *dev, fbvp_t *vp) { kfb_vp_t *kfb_vp = malloc(sizeof(kfb_vp_t)); if (kfb_vp == NULL) return ENOMEM; /* * Conditions necessary to select aligned glyph * drawing variants: * - word size is divisible by number of bytes per pixel * - cell scanline size is divisible by word size * - cell scanlines are word-aligned * */ size_t word_size = sizeof(unsigned long); if (((word_size % kfb.pixel_bytes) == 0) && ((FONT_WIDTH * kfb.pixel_bytes) % word_size == 0) && ((vp->x * kfb.pixel_bytes) % word_size == 0) && (kfb.scanline % word_size == 0)) kfb_vp->draw_char = draw_char_aligned; else kfb_vp->draw_char = draw_char_fallback; vp->attrs.type = CHAR_ATTR_RGB; vp->attrs.val.rgb.bgcolor = DEFAULT_BGCOLOR; vp->attrs.val.rgb.fgcolor = DEFAULT_FGCOLOR; vp->data = (void *) kfb_vp; return EOK; } static void kfb_vp_destroy(fbdev_t *dev, fbvp_t *vp) { free(vp->data); } static void kfb_vp_clear(fbdev_t *dev, fbvp_t *vp) { pointer_hide(); for (sysarg_t row = 0; row < vp->rows; row++) { for (sysarg_t col = 0; col < vp->cols; col++) { charfield_t *field = screenbuffer_field_at(vp->backbuf, col, row); field->ch = 0; field->attrs = vp->attrs; } } pixel_t bgcolor = 0; pixel_t fgcolor = 0; attrs_rgb(vp->attrs, &bgcolor, &fgcolor); draw_filled_rect(vp->x, vp->y, vp->x + vp->width, vp->y + vp->height, bgcolor); pointer_show(); } static console_caps_t kfb_vp_get_caps(fbdev_t *dev, fbvp_t *vp) { return (CONSOLE_CAP_STYLE | CONSOLE_CAP_INDEXED | CONSOLE_CAP_RGB); } static void kfb_vp_cursor_update(fbdev_t *dev, fbvp_t *vp, sysarg_t prev_col, sysarg_t prev_row, sysarg_t col, sysarg_t row, bool visible) { pointer_hide(); draw_vp_char(vp, prev_col, prev_row); draw_vp_char(vp, col, row); pointer_show(); } static void kfb_vp_cursor_flash(fbdev_t *dev, fbvp_t *vp, sysarg_t col, sysarg_t row) { pointer_hide(); draw_vp_char(vp, col, row); pointer_show(); } static void kfb_vp_char_update(fbdev_t *dev, fbvp_t *vp, sysarg_t col, sysarg_t row) { pointer_hide(); draw_vp_char(vp, col, row); pointer_show(); } static void kfb_vp_imgmap_damage(fbdev_t *dev, fbvp_t *vp, imgmap_t *imgmap, sysarg_t x0, sysarg_t y0, sysarg_t width, sysarg_t height) { pointer_hide(); for (sysarg_t y = 0; y < height; y++) { for (sysarg_t x = 0; x < width; x++) { pixel_t pixel = imgmap_get_pixel(imgmap, x0 + x, y0 + y); vp_put_pixel(vp, x0 + x, y0 + y, pixel); } } pointer_show(); } static fbdev_ops_t kfb_ops = { .yield = kfb_yield, .claim = kfb_claim, .pointer_update = kfb_pointer_update, .get_resolution = kfb_get_resolution, .font_metrics = kfb_font_metrics, .vp_create = kfb_vp_create, .vp_destroy = kfb_vp_destroy, .vp_clear = kfb_vp_clear, .vp_get_caps = kfb_vp_get_caps, .vp_cursor_update = kfb_vp_cursor_update, .vp_cursor_flash = kfb_vp_cursor_flash, .vp_char_update = kfb_vp_char_update, .vp_imgmap_damage = kfb_vp_imgmap_damage }; /** Render glyphs * * Convert glyphs from device independent font * description to current visual representation. * */ static void render_glyphs(size_t sz) { memset(kfb.glyphs, 0, sz); for (unsigned int glyph = 0; glyph < FONT_GLYPHS; glyph++) { for (unsigned int y = 0; y < FONT_SCANLINES; y++) { for (unsigned int x = 0; x < FONT_WIDTH; x++) { kfb.visual_mask( &kfb.glyphs[GLYPH_POS(glyph, y, false) + x * kfb.pixel_bytes], (fb_font[glyph][y] & (1 << (7 - x))) ? true : false); kfb.visual_mask( &kfb.glyphs[GLYPH_POS(glyph, y, true) + x * kfb.pixel_bytes], (fb_font[glyph][y] & (1 << (7 - x))) ? false : true); } } } } int kfb_init(void) { sysarg_t present; int rc = sysinfo_get_value("fb", &present); if (rc != EOK) present = false; if (!present) return ENOENT; sysarg_t kind; rc = sysinfo_get_value("fb.kind", &kind); if (rc != EOK) kind = (sysarg_t) -1; if (kind != 1) return EINVAL; sysarg_t paddr; rc = sysinfo_get_value("fb.address.physical", &paddr); if (rc != EOK) return rc; sysarg_t offset; rc = sysinfo_get_value("fb.offset", &offset); if (rc != EOK) offset = 0; sysarg_t width; rc = sysinfo_get_value("fb.width", &width); if (rc != EOK) return rc; sysarg_t height; rc = sysinfo_get_value("fb.height", &height); if (rc != EOK) return rc; sysarg_t scanline; rc = sysinfo_get_value("fb.scanline", &scanline); if (rc != EOK) return rc; sysarg_t visual; rc = sysinfo_get_value("fb.visual", &visual); if (rc != EOK) return rc; kfb.width = width; kfb.height = height; kfb.offset = offset; kfb.scanline = scanline; kfb.visual = visual; switch (visual) { case VISUAL_INDIRECT_8: kfb.pixel2visual = pixel2bgr_323; kfb.visual2pixel = bgr_323_2pixel; kfb.visual_mask = visual_mask_323; kfb.pixel_bytes = 1; break; case VISUAL_RGB_5_5_5_LE: kfb.pixel2visual = pixel2rgb_555_le; kfb.visual2pixel = rgb_555_le_2pixel; kfb.visual_mask = visual_mask_555; kfb.pixel_bytes = 2; break; case VISUAL_RGB_5_5_5_BE: kfb.pixel2visual = pixel2rgb_555_be; kfb.visual2pixel = rgb_555_be_2pixel; kfb.visual_mask = visual_mask_555; kfb.pixel_bytes = 2; break; case VISUAL_RGB_5_6_5_LE: kfb.pixel2visual = pixel2rgb_565_le; kfb.visual2pixel = rgb_565_le_2pixel; kfb.visual_mask = visual_mask_565; kfb.pixel_bytes = 2; break; case VISUAL_RGB_5_6_5_BE: kfb.pixel2visual = pixel2rgb_565_be; kfb.visual2pixel = rgb_565_be_2pixel; kfb.visual_mask = visual_mask_565; kfb.pixel_bytes = 2; break; case VISUAL_RGB_8_8_8: kfb.pixel2visual = pixel2rgb_888; kfb.visual2pixel = rgb_888_2pixel; kfb.visual_mask = visual_mask_888; kfb.pixel_bytes = 3; break; case VISUAL_BGR_8_8_8: kfb.pixel2visual = pixel2bgr_888; kfb.visual2pixel = bgr_888_2pixel; kfb.visual_mask = visual_mask_888; kfb.pixel_bytes = 3; break; case VISUAL_RGB_8_8_8_0: kfb.pixel2visual = pixel2rgb_8880; kfb.visual2pixel = rgb_8880_2pixel; kfb.visual_mask = visual_mask_8880; kfb.pixel_bytes = 4; break; case VISUAL_RGB_0_8_8_8: kfb.pixel2visual = pixel2rgb_0888; kfb.visual2pixel = rgb_0888_2pixel; kfb.visual_mask = visual_mask_0888; kfb.pixel_bytes = 4; break; case VISUAL_BGR_0_8_8_8: kfb.pixel2visual = pixel2bgr_0888; kfb.visual2pixel = bgr_0888_2pixel; kfb.visual_mask = visual_mask_0888; kfb.pixel_bytes = 4; break; case VISUAL_BGR_8_8_8_0: kfb.pixel2visual = pixel2bgr_8880; kfb.visual2pixel = bgr_8880_2pixel; kfb.visual_mask = visual_mask_8880; kfb.pixel_bytes = 4; break; default: return EINVAL; } kfb.glyph_scanline = FONT_WIDTH * kfb.pixel_bytes; kfb.glyph_bytes = kfb.glyph_scanline * FONT_SCANLINES; size_t sz = 2 * FONT_GLYPHS * kfb.glyph_bytes; kfb.glyphs = (uint8_t *) malloc(sz); if (kfb.glyphs == NULL) return EINVAL; render_glyphs(sz); kfb.size = scanline * height; rc = physmem_map((void *) paddr + offset, ALIGN_UP(kfb.size, PAGE_SIZE) >> PAGE_WIDTH, AS_AREA_READ | AS_AREA_WRITE, (void *) &kfb.addr); if (rc != EOK) { free(kfb.glyphs); return rc; } kfb.pointer_x = 0; kfb.pointer_y = 0; kfb.pointer_visible = false; kfb.pointer_imgmap = imgmap_create(POINTER_WIDTH, POINTER_HEIGHT, VISUAL_RGB_0_8_8_8, IMGMAP_FLAG_NONE); kfb.backbuf = NULL; fbdev_t *dev = fbdev_register(&kfb_ops, (void *) &kfb); if (dev == NULL) { free(kfb.glyphs); as_area_destroy(kfb.addr); return EINVAL; } return EOK; } /** * @} */