recovery: Use BGRA8888, fixes banding

Thanks to codeworkx for this one

Change-Id: Ib087e7c9d3f16c0552069984f4248a656edadce0

1 files changed, 376 insertions, 353 deletions

diff --git a/recovery/graphics.c b/recovery/graphics.c
index 8699760..6d60b27 100755
--- a/recovery/graphics.c
+++ b/recovery/graphics.c
@@ -1,353 +1,376 @@
-/*

- * Copyright (C) 2007 The Android Open Source Project

- *

- * Licensed under the Apache License, Version 2.0 (the "License");

- * you may not use this file except in compliance with the License.

- * You may obtain a copy of the License at

- *

- *      http://www.apache.org/licenses/LICENSE-2.0

- *

- * Unless required by applicable law or agreed to in writing, software

- * distributed under the License is distributed on an "AS IS" BASIS,

- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

- * See the License for the specific language governing permissions and

- * limitations under the License.

- */

-

-#include <stdlib.h>

-#include <unistd.h>

-

-#include <fcntl.h>

-#include <stdio.h>

-

-#include <sys/ioctl.h>

-#include <sys/mman.h>

-#include <sys/types.h>

-

-#include <linux/fb.h>

-#include <linux/kd.h>

-

-#include <pixelflinger/pixelflinger.h>

-

-#ifndef BOARD_LDPI_RECOVERY

-	#include "font_10x18.h"

-#else

-	#include "font_7x16.h"

-#endif

-

-#include "minui.h"

-

-typedef struct {

-    GGLSurface texture;

-    unsigned cwidth;

-    unsigned cheight;

-    unsigned ascent;

-} GRFont;

-

-static GRFont *gr_font = 0;

-static GGLContext *gr_context = 0;

-static GGLSurface gr_font_texture;

-static GGLSurface gr_framebuffer[2];

-static GGLSurface gr_mem_surface;

-static unsigned gr_active_fb = 0;

-

-static int gr_fb_fd = -1;

-static int gr_vt_fd = -1;

-

-static struct fb_var_screeninfo vi;

-

-static int get_framebuffer(GGLSurface *fb)

-{

-    int fd;

-    struct fb_fix_screeninfo fi;

-    void *bits;

-

-    fd = open("/dev/graphics/fb0", O_RDWR);

-    if (fd < 0) {

-        perror("cannot open fb0");

-        return -1;

-    }

-

-    if (ioctl(fd, FBIOGET_FSCREENINFO, &fi) < 0) {

-        perror("failed to get fb0 info");

-        close(fd);

-        return -1;

-    }

-

-    if (ioctl(fd, FBIOGET_VSCREENINFO, &vi) < 0) {

-        perror("failed to get fb0 info");

-        close(fd);

-        return -1;

-    }

-

-    bits = mmap(0, fi.smem_len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);

-    if (bits == MAP_FAILED) {

-        perror("failed to mmap framebuffer");

-        close(fd);

-        return -1;

-    }

-

-    fb->version = sizeof(*fb);

-    fb->width = vi.xres;

-    fb->height = vi.yres;

-#ifdef BOARD_HAS_JANKY_BACKBUFFER

-    fb->stride = fi.line_length/2;

-#else

-    fb->stride = vi.xres;

-#endif

-    fb->data = bits;

-    fb->format = GGL_PIXEL_FORMAT_RGB_565;

-    memset(fb->data, 0, vi.yres * vi.xres * 2);

-

-    fb++;

-

-    fb->version = sizeof(*fb);

-    fb->width = vi.xres;

-    fb->height = vi.yres;

-#ifdef BOARD_HAS_JANKY_BACKBUFFER

-    fb->stride = fi.line_length/2;

-    fb->data = (void*) (((unsigned) bits) + vi.yres * fi.line_length);

-#else

-    fb->stride = vi.xres;

-    fb->data = (void*) (((unsigned) bits) + vi.yres * vi.xres * 2);

-#endif

-    fb->format = GGL_PIXEL_FORMAT_RGB_565;

-    memset(fb->data, 0, vi.yres * vi.xres * 2);

-

-    return fd;

-}

-

-static void get_memory_surface(GGLSurface* ms) {

-  ms->version = sizeof(*ms);

-  ms->width = vi.xres;

-  ms->height = vi.yres;

-  ms->stride = vi.xres;

-  ms->data = malloc(vi.xres * vi.yres * 2);

-  ms->format = GGL_PIXEL_FORMAT_RGB_565;

-}

-

-static void set_active_framebuffer(unsigned n)

-{

-    if (n > 1) return;

-    vi.yres_virtual = vi.yres * 2;

-    vi.yoffset = n * vi.yres;

-    vi.bits_per_pixel = 16;

-    if (ioctl(gr_fb_fd, FBIOPUT_VSCREENINFO, &vi) < 0) {

-        perror("active fb swap failed");

-    }

-}

-

-void gr_flip(void)

-{

-    GGLContext *gl = gr_context;

-

-    /* swap front and back buffers */

-    gr_active_fb = (gr_active_fb + 1) & 1;

-

-#ifdef BOARD_HAS_FLIPPED_SCREEN

-    /* flip buffer 180 degrees for devices with physicaly inverted screens */

-    unsigned int i;

-    for (i = 1; i < (vi.xres * vi.yres); i++) {

-        unsigned short tmp = gr_mem_surface.data[i];

-        gr_mem_surface.data[i] = gr_mem_surface.data[(vi.xres * vi.yres * 2) - i];

-        gr_mem_surface.data[(vi.xres * vi.yres * 2) - i] = tmp;

-    }

-#endif

-

-    /* copy data from the in-memory surface to the buffer we're about

-     * to make active. */

-    memcpy(gr_framebuffer[gr_active_fb].data, gr_mem_surface.data,

-           vi.xres * vi.yres * 2);

-

-    /* inform the display driver */

-    set_active_framebuffer(gr_active_fb);

-}

-

-void gr_color(unsigned char r, unsigned char g, unsigned char b, unsigned char a)

-{

-    GGLContext *gl = gr_context;

-    GGLint color[4];

-    color[0] = ((r << 8) | r) + 1;

-    color[1] = ((g << 8) | g) + 1;

-    color[2] = ((b << 8) | b) + 1;

-    color[3] = ((a << 8) | a) + 1;

-    gl->color4xv(gl, color);

-}

-

-int gr_measure(const char *s)

-{

-    return gr_font->cwidth * strlen(s);

-}

-

-void gr_font_size(int *x, int *y)

-{

-    *x = gr_font->cwidth;

-    *y = gr_font->cheight;

-}

-

-int gr_text(int x, int y, const char *s)

-{

-    GGLContext *gl = gr_context;

-    GRFont *font = gr_font;

-    unsigned off;

-

-    y -= font->ascent;

-

-    gl->bindTexture(gl, &font->texture);

-    gl->texEnvi(gl, GGL_TEXTURE_ENV, GGL_TEXTURE_ENV_MODE, GGL_REPLACE);

-    gl->texGeni(gl, GGL_S, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);

-    gl->texGeni(gl, GGL_T, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);

-    gl->enable(gl, GGL_TEXTURE_2D);

-

-    while((off = *s++)) {

-        off -= 32;

-        if (off < 96) {

-            gl->texCoord2i(gl, (off * font->cwidth) - x, 0 - y);

-            gl->recti(gl, x, y, x + font->cwidth, y + font->cheight);

-        }

-        x += font->cwidth;

-    }

-

-    return x;

-}

-

-void gr_fill(int x, int y, int w, int h)

-{

-    GGLContext *gl = gr_context;

-    gl->disable(gl, GGL_TEXTURE_2D);

-    gl->recti(gl, x, y, w, h);

-}

-

-void gr_blit(gr_surface source, int sx, int sy, int w, int h, int dx, int dy) {

-    if (gr_context == NULL) {

-        return;

-    }

-    GGLContext *gl = gr_context;

-

-    gl->bindTexture(gl, (GGLSurface*) source);

-    gl->texEnvi(gl, GGL_TEXTURE_ENV, GGL_TEXTURE_ENV_MODE, GGL_REPLACE);

-    gl->texGeni(gl, GGL_S, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);

-    gl->texGeni(gl, GGL_T, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);

-    gl->enable(gl, GGL_TEXTURE_2D);

-    gl->texCoord2i(gl, sx - dx, sy - dy);

-    gl->recti(gl, dx, dy, dx + w, dy + h);

-}

-

-unsigned int gr_get_width(gr_surface surface) {

-    if (surface == NULL) {

-        return 0;

-    }

-    return ((GGLSurface*) surface)->width;

-}

-

-unsigned int gr_get_height(gr_surface surface) {

-    if (surface == NULL) {

-        return 0;

-    }

-    return ((GGLSurface*) surface)->height;

-}

-

-static void gr_init_font(void)

-{

-    GGLSurface *ftex;

-    unsigned char *bits, *rle;

-    unsigned char *in, data;

-

-    gr_font = calloc(sizeof(*gr_font), 1);

-    ftex = &gr_font->texture;

-

-    bits = malloc(font.width * font.height);

-

-    ftex->version = sizeof(*ftex);

-    ftex->width = font.width;

-    ftex->height = font.height;

-    ftex->stride = font.width;

-    ftex->data = (void*) bits;

-    ftex->format = GGL_PIXEL_FORMAT_A_8;

-

-    in = font.rundata;

-    while((data = *in++)) {

-        memset(bits, (data & 0x80) ? 255 : 0, data & 0x7f);

-        bits += (data & 0x7f);

-    }

-

-    gr_font->cwidth = font.cwidth;

-    gr_font->cheight = font.cheight;

-    gr_font->ascent = font.cheight - 2;

-}

-

-int gr_init(void)

-{

-    gglInit(&gr_context);

-    GGLContext *gl = gr_context;

-

-    gr_init_font();

-    gr_vt_fd = open("/dev/tty0", O_RDWR | O_SYNC);

-    if (gr_vt_fd < 0) {

-        // This is non-fatal; post-Cupcake kernels don't have tty0.

-        perror("can't open /dev/tty0");

-    } else if (ioctl(gr_vt_fd, KDSETMODE, (void*) KD_GRAPHICS)) {

-        // However, if we do open tty0, we expect the ioctl to work.

-        perror("failed KDSETMODE to KD_GRAPHICS on tty0");

-        gr_exit();

-        return -1;

-    }

-

-    gr_fb_fd = get_framebuffer(gr_framebuffer);

-    if (gr_fb_fd < 0) {

-        gr_exit();

-        return -1;

-    }

-

-    get_memory_surface(&gr_mem_surface);

-

-    fprintf(stderr, "framebuffer: fd %d (%d x %d)\n",

-            gr_fb_fd, gr_framebuffer[0].width, gr_framebuffer[0].height);

-

-        /* start with 0 as front (displayed) and 1 as back (drawing) */

-    gr_active_fb = 0;

-    set_active_framebuffer(0);

-    gl->colorBuffer(gl, &gr_mem_surface);

-

-    gl->activeTexture(gl, 0);

-    gl->enable(gl, GGL_BLEND);

-    gl->blendFunc(gl, GGL_SRC_ALPHA, GGL_ONE_MINUS_SRC_ALPHA);

-

-    return 0;

-}

-

-void gr_exit(void)

-{

-    close(gr_fb_fd);

-    gr_fb_fd = -1;

-

-    free(gr_mem_surface.data);

-

-    ioctl(gr_vt_fd, KDSETMODE, (void*) KD_TEXT);

-    close(gr_vt_fd);

-    gr_vt_fd = -1;

-}

-

-int gr_fb_width(void)

-{

-    return gr_framebuffer[0].width;

-}

-

-int gr_fb_height(void)

-{

-    return gr_framebuffer[0].height;

-}

-

-gr_pixel *gr_fb_data(void)

-{

-    return (unsigned short *) gr_mem_surface.data;

-}

-

-void gr_fb_blank(bool blank)

-{

-    int ret;

-

-    ret = ioctl(gr_fb_fd, FBIOBLANK, blank ? FB_BLANK_POWERDOWN : FB_BLANK_UNBLANK);

-    if (ret < 0)

-        perror("ioctl(): blank");

-}
\ No newline at end of file
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdbool.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <fcntl.h>
+#include <stdio.h>
+
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+
+#include <linux/fb.h>
+#include <linux/kd.h>
+
+#include <pixelflinger/pixelflinger.h>
+
+#ifdef BOARD_USE_CUSTOM_RECOVERY_FONT
+#include BOARD_USE_CUSTOM_RECOVERY_FONT
+#else
+#include "font_10x18.h"
+#endif
+
+#include "minui.h"
+
+#define PIXEL_FORMAT GGL_PIXEL_FORMAT_BGRA_8888
+#define PIXEL_SIZE   4
+
+typedef struct {
+    GGLSurface texture;
+    unsigned cwidth;
+    unsigned cheight;
+    unsigned ascent;
+} GRFont;
+
+static GRFont *gr_font = 0;
+static GGLContext *gr_context = 0;
+static GGLSurface gr_font_texture;
+static GGLSurface gr_framebuffer[2];
+static GGLSurface gr_mem_surface;
+static unsigned gr_active_fb = 0;
+
+static int gr_fb_fd = -1;
+static int gr_vt_fd = -1;
+
+static struct fb_var_screeninfo vi;
+static struct fb_fix_screeninfo fi;
+
+static int get_framebuffer(GGLSurface *fb)
+{
+    int fd;
+    void *bits;
+
+    fd = open("/dev/graphics/fb0", O_RDWR);
+    if (fd < 0) {
+        perror("cannot open fb0");
+        return -1;
+    }
+
+    if (ioctl(fd, FBIOGET_VSCREENINFO, &vi) < 0) {
+        perror("failed to get fb0 info");
+        close(fd);
+        return -1;
+    }
+
+    vi.bits_per_pixel = PIXEL_SIZE * 8;
+    if (PIXEL_FORMAT == GGL_PIXEL_FORMAT_BGRA_8888) {
+      vi.red.offset     = 8;
+      vi.red.length     = 8;
+      vi.green.offset   = 16;
+      vi.green.length   = 8;
+      vi.blue.offset    = 24;
+      vi.blue.length    = 8;
+      vi.transp.offset  = 0;
+      vi.transp.length  = 8;
+    } else if (PIXEL_FORMAT == GGL_PIXEL_FORMAT_RGBX_8888) {
+      vi.red.offset     = 24;
+      vi.red.length     = 8;
+      vi.green.offset   = 16;
+      vi.green.length   = 8;
+      vi.blue.offset    = 8;
+      vi.blue.length    = 8;
+      vi.transp.offset  = 0;
+      vi.transp.length  = 8;
+    } else { /* RGB565*/
+      vi.red.offset     = 11;
+      vi.red.length     = 5;
+      vi.green.offset   = 5;
+      vi.green.length   = 6;
+      vi.blue.offset    = 0;
+      vi.blue.length    = 5;
+      vi.transp.offset  = 0;
+      vi.transp.length  = 0;
+    }
+    if (ioctl(fd, FBIOPUT_VSCREENINFO, &vi) < 0) {
+        perror("failed to put fb0 info");
+        close(fd);
+        return -1;
+    }
+
+    if (ioctl(fd, FBIOGET_FSCREENINFO, &fi) < 0) {
+        perror("failed to get fb0 info");
+        close(fd);
+        return -1;
+    }
+
+    bits = mmap(0, fi.smem_len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+    if (bits == MAP_FAILED) {
+        perror("failed to mmap framebuffer");
+        close(fd);
+        return -1;
+    }
+
+    fb->version = sizeof(*fb);
+    fb->width = vi.xres;
+    fb->height = vi.yres;
+    fb->stride = fi.line_length/PIXEL_SIZE;
+    fb->data = bits;
+    fb->format = PIXEL_FORMAT;
+    memset(fb->data, 0, vi.yres * fi.line_length);
+
+    fb++;
+
+    fb->version = sizeof(*fb);
+    fb->width = vi.xres;
+    fb->height = vi.yres;
+    fb->stride = fi.line_length/PIXEL_SIZE;
+    fb->data = (void*) (((unsigned) bits) + vi.yres * fi.line_length);
+    fb->format = PIXEL_FORMAT;
+    memset(fb->data, 0, vi.yres * fi.line_length);
+
+    return fd;
+}
+
+static void get_memory_surface(GGLSurface* ms) {
+  ms->version = sizeof(*ms);
+  ms->width = vi.xres;
+  ms->height = vi.yres;
+  ms->stride = fi.line_length/PIXEL_SIZE;
+  ms->data = malloc(fi.line_length * vi.yres);
+  ms->format = PIXEL_FORMAT;
+}
+
+static void set_active_framebuffer(unsigned n)
+{
+    if (n > 1) return;
+    vi.yres_virtual = vi.yres * PIXEL_SIZE;
+    vi.yoffset = n * vi.yres;
+    vi.bits_per_pixel = PIXEL_SIZE * 8;
+    if (ioctl(gr_fb_fd, FBIOPUT_VSCREENINFO, &vi) < 0) {
+        perror("active fb swap failed");
+    }
+}
+
+void gr_flip(void)
+{
+    GGLContext *gl = gr_context;
+
+    /* swap front and back buffers */
+    gr_active_fb = (gr_active_fb + 1) & 1;
+
+    /* copy data from the in-memory surface to the buffer we're about
+     * to make active. */
+    memcpy(gr_framebuffer[gr_active_fb].data, gr_mem_surface.data,
+           fi.line_length * vi.yres);
+
+    /* inform the display driver */
+    set_active_framebuffer(gr_active_fb);
+}
+
+void gr_color(unsigned char r, unsigned char g, unsigned char b, unsigned char a)
+{
+    GGLContext *gl = gr_context;
+    GGLint color[4];
+    color[0] = ((r << 8) | r) + 1;
+    color[1] = ((g << 8) | g) + 1;
+    color[2] = ((b << 8) | b) + 1;
+    color[3] = ((a << 8) | a) + 1;
+    gl->color4xv(gl, color);
+}
+
+int gr_measure(const char *s)
+{
+    return gr_font->cwidth * strlen(s);
+}
+
+void gr_font_size(int *x, int *y)
+{
+    *x = gr_font->cwidth;
+    *y = gr_font->cheight;
+}
+
+int gr_text(int x, int y, const char *s)
+{
+    GGLContext *gl = gr_context;
+    GRFont *font = gr_font;
+    unsigned off;
+
+    y -= font->ascent;
+
+    gl->bindTexture(gl, &font->texture);
+    gl->texEnvi(gl, GGL_TEXTURE_ENV, GGL_TEXTURE_ENV_MODE, GGL_REPLACE);
+    gl->texGeni(gl, GGL_S, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
+    gl->texGeni(gl, GGL_T, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
+    gl->enable(gl, GGL_TEXTURE_2D);
+
+    while((off = *s++)) {
+        off -= 32;
+        if (off < 96) {
+            gl->texCoord2i(gl, (off * font->cwidth) - x, 0 - y);
+            gl->recti(gl, x, y, x + font->cwidth, y + font->cheight);
+        }
+        x += font->cwidth;
+    }
+
+    return x;
+}
+
+void gr_fill(int x, int y, int w, int h)
+{
+    GGLContext *gl = gr_context;
+    gl->disable(gl, GGL_TEXTURE_2D);
+    gl->recti(gl, x, y, w, h);
+}
+
+void gr_blit(gr_surface source, int sx, int sy, int w, int h, int dx, int dy) {
+    if (gr_context == NULL) {
+        return;
+    }
+    GGLContext *gl = gr_context;
+
+    gl->bindTexture(gl, (GGLSurface*) source);
+    gl->texEnvi(gl, GGL_TEXTURE_ENV, GGL_TEXTURE_ENV_MODE, GGL_REPLACE);
+    gl->texGeni(gl, GGL_S, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
+    gl->texGeni(gl, GGL_T, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
+    gl->enable(gl, GGL_TEXTURE_2D);
+    gl->texCoord2i(gl, sx - dx, sy - dy);
+    gl->recti(gl, dx, dy, dx + w, dy + h);
+}
+
+unsigned int gr_get_width(gr_surface surface) {
+    if (surface == NULL) {
+        return 0;
+    }
+    return ((GGLSurface*) surface)->width;
+}
+
+unsigned int gr_get_height(gr_surface surface) {
+    if (surface == NULL) {
+        return 0;
+    }
+    return ((GGLSurface*) surface)->height;
+}
+
+static void gr_init_font(void)
+{
+    GGLSurface *ftex;
+    unsigned char *bits, *rle;
+    unsigned char *in, data;
+
+    gr_font = calloc(sizeof(*gr_font), 1);
+    ftex = &gr_font->texture;
+
+    bits = malloc(font.width * font.height);
+
+    ftex->version = sizeof(*ftex);
+    ftex->width = font.width;
+    ftex->height = font.height;
+    ftex->stride = font.width;
+    ftex->data = (void*) bits;
+    ftex->format = GGL_PIXEL_FORMAT_A_8;
+
+    in = font.rundata;
+    while((data = *in++)) {
+        memset(bits, (data & 0x80) ? 255 : 0, data & 0x7f);
+        bits += (data & 0x7f);
+    }
+
+    gr_font->cwidth = font.cwidth;
+    gr_font->cheight = font.cheight;
+    gr_font->ascent = font.cheight - 2;
+}
+
+int gr_init(void)
+{
+    gglInit(&gr_context);
+    GGLContext *gl = gr_context;
+
+    gr_init_font();
+    gr_vt_fd = open("/dev/tty0", O_RDWR | O_SYNC);
+    if (gr_vt_fd < 0) {
+        // This is non-fatal; post-Cupcake kernels don't have tty0.
+        perror("can't open /dev/tty0");
+    } else if (ioctl(gr_vt_fd, KDSETMODE, (void*) KD_GRAPHICS)) {
+        // However, if we do open tty0, we expect the ioctl to work.
+        perror("failed KDSETMODE to KD_GRAPHICS on tty0");
+        gr_exit();
+        return -1;
+    }
+
+    gr_fb_fd = get_framebuffer(gr_framebuffer);
+    if (gr_fb_fd < 0) {
+        gr_exit();
+        return -1;
+    }
+
+    get_memory_surface(&gr_mem_surface);
+
+    fprintf(stderr, "framebuffer: fd %d (%d x %d)\n",
+            gr_fb_fd, gr_framebuffer[0].width, gr_framebuffer[0].height);
+
+        /* start with 0 as front (displayed) and 1 as back (drawing) */
+    gr_active_fb = 0;
+    set_active_framebuffer(0);
+    gl->colorBuffer(gl, &gr_mem_surface);
+
+    gl->activeTexture(gl, 0);
+    gl->enable(gl, GGL_BLEND);
+    gl->blendFunc(gl, GGL_SRC_ALPHA, GGL_ONE_MINUS_SRC_ALPHA);
+
+    gr_fb_blank(true);
+    gr_fb_blank(false);
+
+    return 0;
+}
+
+void gr_exit(void)
+{
+    close(gr_fb_fd);
+    gr_fb_fd = -1;
+
+    free(gr_mem_surface.data);
+
+    ioctl(gr_vt_fd, KDSETMODE, (void*) KD_TEXT);
+    close(gr_vt_fd);
+    gr_vt_fd = -1;
+}
+
+int gr_fb_width(void)
+{
+    return gr_framebuffer[0].width;
+}
+
+int gr_fb_height(void)
+{
+    return gr_framebuffer[0].height;
+}
+
+gr_pixel *gr_fb_data(void)
+{
+    return (unsigned short *) gr_mem_surface.data;
+}
+
+void gr_fb_blank(bool blank)
+{
+    int ret;
+
+    ret = ioctl(gr_fb_fd, FBIOBLANK, blank ? FB_BLANK_POWERDOWN : FB_BLANK_UNBLANK);
+    if (ret < 0)
+        perror("ioctl(): blank");
+}