diff options
Diffstat (limited to 'minui')
| -rw-r--r-- | minui/graphics.c | 49 |
1 files changed, 33 insertions, 16 deletions
diff --git a/minui/graphics.c b/minui/graphics.c index 05e8763..06c5fdf 100644 --- a/minui/graphics.c +++ b/minui/graphics.c @@ -43,6 +43,7 @@ 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; @@ -55,7 +56,7 @@ 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"); @@ -87,9 +88,9 @@ static int get_framebuffer(GGLSurface *fb) fb->stride = vi.xres; fb->data = bits; fb->format = GGL_PIXEL_FORMAT_RGB_565; - + fb++; - + fb->version = sizeof(*fb); fb->width = vi.xres; fb->height = vi.yres; @@ -100,6 +101,15 @@ static int get_framebuffer(GGLSurface *fb) 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; @@ -113,14 +123,16 @@ static void set_active_framebuffer(unsigned n) void gr_flip(void) { GGLContext *gl = gr_context; - - /* currently active buffer becomes the backbuffer */ - gl->colorBuffer(gl, gr_framebuffer + gr_active_fb); - /* swap front and back buffers */ + /* swap front and back buffers */ gr_active_fb = (gr_active_fb + 1) & 1; - /* inform the display driver */ + /* 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); } @@ -147,13 +159,13 @@ int gr_text(int x, int y, const char *s) 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) { @@ -209,10 +221,10 @@ static void gr_init_font(void) unsigned char *in, data; gr_font = calloc(sizeof(*gr_font), 1); - ftex = &gr_font->texture; + ftex = &gr_font->texture; bits = malloc(font.width * font.height); - + ftex->version = sizeof(*ftex); ftex->width = font.width; ftex->height = font.height; @@ -225,7 +237,7 @@ static void gr_init_font(void) 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; @@ -254,13 +266,16 @@ int gr_init(void) 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_framebuffer + 1); + gl->colorBuffer(gl, &gr_mem_surface); + gl->activeTexture(gl, 0); gl->enable(gl, GGL_BLEND); @@ -273,7 +288,9 @@ 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; @@ -291,5 +308,5 @@ int gr_fb_height(void) gr_pixel *gr_fb_data(void) { - return (unsigned short *) gr_framebuffer[1 - gr_active_fb].data; + return (unsigned short *) gr_mem_surface.data; } |