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-rw-r--r--minui/graphics.c57
1 files changed, 24 insertions, 33 deletions
diff --git a/minui/graphics.c b/minui/graphics.c
index 4f3026a25..05e876300 100644
--- a/minui/graphics.c
+++ b/minui/graphics.c
@@ -57,24 +57,27 @@ static int get_framebuffer(GGLSurface *fb)
void *bits;
fd = open("/dev/graphics/fb0", O_RDWR);
- if(fd < 0) {
+ if (fd < 0) {
perror("cannot open fb0");
return -1;
}
- if(ioctl(fd, FBIOGET_FSCREENINFO, &fi) < 0) {
+ if (ioctl(fd, FBIOGET_FSCREENINFO, &fi) < 0) {
perror("failed to get fb0 info");
+ close(fd);
return -1;
}
- if(ioctl(fd, FBIOGET_VSCREENINFO, &vi) < 0) {
+ 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) {
+ if (bits == MAP_FAILED) {
perror("failed to mmap framebuffer");
+ close(fd);
return -1;
}
@@ -99,24 +102,14 @@ static int get_framebuffer(GGLSurface *fb)
static void set_active_framebuffer(unsigned n)
{
- if(n > 1) return;
+ if (n > 1) return;
vi.yres_virtual = vi.yres * 2;
vi.yoffset = n * vi.yres;
- if(ioctl(gr_fb_fd, FBIOPUT_VSCREENINFO, &vi) < 0) {
- fprintf(stderr,"active fb swap failed!\n");
+ if (ioctl(gr_fb_fd, FBIOPUT_VSCREENINFO, &vi) < 0) {
+ perror("active fb swap failed");
}
}
-static void dumpinfo(struct fb_var_screeninfo *vi)
-{
- fprintf(stderr,"vi.xres = %d\n", vi->xres);
- fprintf(stderr,"vi.yres = %d\n", vi->yres);
- fprintf(stderr,"vi.xresv = %d\n", vi->xres_virtual);
- fprintf(stderr,"vi.yresv = %d\n", vi->yres_virtual);
- fprintf(stderr,"vi.xoff = %d\n", vi->xoffset);
- fprintf(stderr,"vi.yoff = %d\n", vi->yoffset);
-}
-
void gr_flip(void)
{
GGLContext *gl = gr_context;
@@ -163,7 +156,7 @@ int gr_text(int x, int y, const char *s)
while((off = *s++)) {
off -= 32;
- if(off < 96) {
+ if (off < 96) {
gl->texCoord2i(gl, (off * font->cwidth) - x, 0 - y);
gl->recti(gl, x, y, x + font->cwidth, y + font->cheight);
}
@@ -240,31 +233,29 @@ static void gr_init_font(void)
int gr_init(void)
{
- GGLContext *gl;
- int fd;
-
gglInit(&gr_context);
- gl = gr_context;
+ GGLContext *gl = gr_context;
gr_init_font();
-
- fd = open("/dev/tty0", O_RDWR | O_SYNC);
- if(fd < 0) return -1;
-
- if(ioctl(fd, KDSETMODE, (void*) KD_GRAPHICS)) {
- close(fd);
+ 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) {
- ioctl(fd, KDSETMODE, (void*) KD_TEXT);
- close(fd);
+ if (gr_fb_fd < 0) {
+ gr_exit();
return -1;
}
- gr_vt_fd = fd;
+ 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;