diff options
Diffstat (limited to '')
-rw-r--r-- | minui/graphics.c | 499 |
1 files changed, 302 insertions, 197 deletions
diff --git a/minui/graphics.c b/minui/graphics.c index a2014dca3..c2fc9ea9e 100644 --- a/minui/graphics.c +++ b/minui/graphics.c @@ -28,37 +28,19 @@ #include <linux/fb.h> #include <linux/kd.h> -#include <pixelflinger/pixelflinger.h> +#include <time.h> #include "font_10x18.h" #include "minui.h" -#if defined(RECOVERY_BGRA) -#define PIXEL_FORMAT GGL_PIXEL_FORMAT_BGRA_8888 -#define PIXEL_SIZE 4 -#elif defined(RECOVERY_RGBX) -#define PIXEL_FORMAT GGL_PIXEL_FORMAT_RGBX_8888 -#define PIXEL_SIZE 4 -#else -#define PIXEL_FORMAT GGL_PIXEL_FORMAT_RGB_565 -#define PIXEL_SIZE 2 -#endif - -#define NUM_BUFFERS 2 - typedef struct { - GGLSurface* texture; - unsigned cwidth; - unsigned cheight; + GRSurface* texture; + int cwidth; + int cheight; } GRFont; -static GRFont *gr_font = 0; -static GGLContext *gr_context = 0; -static GGLSurface gr_font_texture; -static GGLSurface gr_framebuffer[NUM_BUFFERS]; -static GGLSurface gr_mem_surface; -static unsigned gr_active_fb = 0; -static unsigned double_buffering = 0; +static GRFont* gr_font = NULL; + static int overscan_percent = OVERSCAN_PERCENT; static int overscan_offset_x = 0; static int overscan_offset_y = 0; @@ -66,67 +48,82 @@ static int overscan_offset_y = 0; static int gr_fb_fd = -1; static int gr_vt_fd = -1; +static GRSurface gr_framebuffer[2]; +static bool double_buffered; +static GRSurface* gr_draw = NULL; +static int displayed_buffer; + +static unsigned char gr_current_r = 255; +static unsigned char gr_current_g = 255; +static unsigned char gr_current_b = 255; +static unsigned char gr_current_a = 255; + static struct fb_var_screeninfo vi; -static struct fb_fix_screeninfo fi; -static int get_framebuffer(GGLSurface *fb) +static bool outside(int x, int y) +{ + return x < 0 || x >= gr_draw->width || y < 0 || y >= gr_draw->height; +} + +static void set_displayed_framebuffer(unsigned n) +{ + if (n > 1 || !double_buffered) return; + + vi.yres_virtual = gr_framebuffer[0].height * 2; + vi.yoffset = n * gr_framebuffer[0].height; + vi.bits_per_pixel = gr_framebuffer[0].pixel_bytes * 8; + if (ioctl(gr_fb_fd, FBIOPUT_VSCREENINFO, &vi) < 0) { + perror("active fb swap failed"); + } + displayed_buffer = n; +} + +static int get_framebuffer() { int fd; void *bits; + struct fb_fix_screeninfo fi; + fd = open("/dev/graphics/fb0", O_RDWR); if (fd < 0) { perror("cannot open fb0"); return -1; } - if (ioctl(fd, FBIOGET_VSCREENINFO, &vi) < 0) { + if (ioctl(fd, FBIOGET_FSCREENINFO, &fi) < 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) { + if (ioctl(fd, FBIOGET_VSCREENINFO, &vi) < 0) { perror("failed to get fb0 info"); close(fd); return -1; } + // We print this out for informational purposes only, but + // throughout we assume that the framebuffer device uses an RGBX + // pixel format. This is the case for every development device I + // have access to. For some of those devices (eg, hammerhead aka + // Nexus 5), FBIOGET_VSCREENINFO *reports* that it wants a + // different format (XBGR) but actually produces the correct + // results on the display when you write RGBX. + // + // If you have a device that actually *needs* another pixel format + // (ie, BGRX, or 565), patches welcome... + + printf("fb0 reports (possibly inaccurate):\n" + " vi.bits_per_pixel = %d\n" + " vi.red.offset = %3d .length = %3d\n" + " vi.green.offset = %3d .length = %3d\n" + " vi.blue.offset = %3d .length = %3d\n", + vi.bits_per_pixel, + vi.red.offset, vi.red.length, + vi.green.offset, vi.green.length, + vi.blue.offset, vi.blue.length); + bits = mmap(0, fi.smem_len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); if (bits == MAP_FAILED) { perror("failed to mmap framebuffer"); @@ -137,79 +134,59 @@ static int get_framebuffer(GGLSurface *fb) overscan_offset_x = vi.xres * overscan_percent / 100; overscan_offset_y = vi.yres * overscan_percent / 100; - 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++; + gr_framebuffer[0].width = vi.xres; + gr_framebuffer[0].height = vi.yres; + gr_framebuffer[0].row_bytes = fi.line_length; + gr_framebuffer[0].pixel_bytes = vi.bits_per_pixel / 8; + gr_framebuffer[0].data = bits; + memset(gr_framebuffer[0].data, 0, gr_framebuffer[0].height * gr_framebuffer[0].row_bytes); /* check if we can use double buffering */ - if (vi.yres * fi.line_length * 2 > fi.smem_len) - return fd; + if (vi.yres * fi.line_length * 2 <= fi.smem_len) { + double_buffered = true; - double_buffering = 1; + memcpy(gr_framebuffer+1, gr_framebuffer, sizeof(GRSurface)); + gr_framebuffer[1].data = gr_framebuffer[0].data + + gr_framebuffer[0].height * gr_framebuffer[0].row_bytes; - fb->version = sizeof(*fb); - fb->width = vi.xres; - fb->height = vi.yres; - fb->stride = fi.line_length/PIXEL_SIZE; - fb->data = (void*) (((char*) 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; -} + gr_draw = gr_framebuffer+1; -static void set_active_framebuffer(unsigned n) -{ - if (n > 1 || !double_buffering) return; - vi.yres_virtual = vi.yres * NUM_BUFFERS; - 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"); + } else { + double_buffered = false; + + // Without double-buffering, we allocate RAM for a buffer to + // draw in, and then "flipping" the buffer consists of a + // memcpy from the buffer we allocated to the framebuffer. + + gr_draw = (GRSurface*) malloc(sizeof(GRSurface)); + memcpy(gr_draw, gr_framebuffer, sizeof(GRSurface)); + gr_draw->data = (unsigned char*) malloc(gr_draw->height * gr_draw->row_bytes); + if (!gr_draw->data) { + perror("failed to allocate in-memory surface"); + return -1; + } } -} -void gr_flip(void) -{ - GGLContext *gl = gr_context; - - /* swap front and back buffers */ - if (double_buffering) - gr_active_fb = (gr_active_fb + 1) & 1; + memset(gr_draw->data, 0, gr_draw->height * gr_draw->row_bytes); + gr_fb_fd = fd; + set_displayed_framebuffer(0); - /* 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); + return fd; } -void gr_color(unsigned char r, unsigned char g, unsigned char b, unsigned char a) +void gr_flip(void) { - 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); + if (double_buffered) { + // Change gr_draw to point to the buffer currently displayed, + // then flip the driver so we're displaying the other buffer + // instead. + gr_draw = gr_framebuffer + displayed_buffer; + set_displayed_framebuffer(1-displayed_buffer); + } else { + // Copy from the in-memory surface to the framebuffer. + memcpy(gr_framebuffer[0].data, gr_draw->data, + gr_draw->height * gr_draw->row_bytes); + } } int gr_measure(const char *s) @@ -223,58 +200,118 @@ void gr_font_size(int *x, int *y) *y = gr_font->cheight; } -int gr_text(int x, int y, const char *s, int bold) +static void text_blend(unsigned char* src_p, int src_row_bytes, + unsigned char* dst_p, int dst_row_bytes, + int width, int height) +{ + int i, j; + for (j = 0; j < height; ++j) { + unsigned char* sx = src_p; + unsigned char* px = dst_p; + for (i = 0; i < width; ++i) { + unsigned char a = *sx++; + if (gr_current_a < 255) a = ((int)a * gr_current_a) / 255; + if (a == 255) { + *px++ = gr_current_r; + *px++ = gr_current_g; + *px++ = gr_current_b; + px++; + } else if (a > 0) { + *px = (*px * (255-a) + gr_current_r * a) / 255; + ++px; + *px = (*px * (255-a) + gr_current_g * a) / 255; + ++px; + *px = (*px * (255-a) + gr_current_b * a) / 255; + ++px; + ++px; + } else { + px += 4; + } + } + src_p += src_row_bytes; + dst_p += dst_row_bytes; + } +} + + +void gr_text(int x, int y, const char *s, int bold) { - GGLContext *gl = gr_context; GRFont *font = gr_font; unsigned off; - if (!font->texture) return x; + if (!font->texture) return; + if (gr_current_a == 0) return; bold = bold && (font->texture->height != font->cheight); x += overscan_offset_x; y += overscan_offset_y; - 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 (outside(x, y) || outside(x+font->cwidth-1, y+font->cheight-1)) break; if (off < 96) { - gl->texCoord2i(gl, (off * font->cwidth) - x, - (bold ? font->cheight : 0) - y); - gl->recti(gl, x, y, x + font->cwidth, y + font->cheight); + + unsigned char* src_p = font->texture->data + (off * font->cwidth) + + (bold ? font->cheight * font->texture->row_bytes : 0); + unsigned char* dst_p = gr_draw->data + y*gr_draw->row_bytes + x*gr_draw->pixel_bytes; + + text_blend(src_p, font->texture->row_bytes, + dst_p, gr_draw->row_bytes, + font->cwidth, font->cheight); + } x += font->cwidth; } - - return x; } -void gr_texticon(int x, int y, gr_surface icon) { - if (gr_context == NULL || icon == NULL) { +void gr_texticon(int x, int y, GRSurface* icon) { + if (icon == NULL) return; + + if (icon->pixel_bytes != 1) { + printf("gr_texticon: source has wrong format\n"); return; } - GGLContext* gl = gr_context; x += overscan_offset_x; y += overscan_offset_y; - gl->bindTexture(gl, (GGLSurface*) icon); - 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); + if (outside(x, y) || outside(x+icon->width-1, y+icon->height-1)) return; + + unsigned char* src_p = icon->data; + unsigned char* dst_p = gr_draw->data + y*gr_draw->row_bytes + x*gr_draw->pixel_bytes; - int w = gr_get_width(icon); - int h = gr_get_height(icon); + text_blend(src_p, icon->row_bytes, + dst_p, gr_draw->row_bytes, + icon->width, icon->height); +} - gl->texCoord2i(gl, -x, -y); - gl->recti(gl, x, y, x+gr_get_width(icon), y+gr_get_height(icon)); +void gr_color(unsigned char r, unsigned char g, unsigned char b, unsigned char a) +{ + gr_current_r = r; + gr_current_g = g; + gr_current_b = b; + gr_current_a = a; +} + +void gr_clear() +{ + if (gr_current_r == gr_current_g && + gr_current_r == gr_current_b) { + memset(gr_draw->data, gr_current_r, gr_draw->height * gr_draw->row_bytes); + } else { + int x, y; + unsigned char* px = gr_draw->data; + for (y = 0; y < gr_draw->height; ++y) { + for (x = 0; x < gr_draw->width; ++x) { + *px++ = gr_current_r; + *px++ = gr_current_g; + *px++ = gr_current_b; + px++; + } + px += gr_draw->row_bytes - (gr_draw->width * gr_draw->pixel_bytes); + } + } } void gr_fill(int x1, int y1, int x2, int y2) @@ -285,48 +322,82 @@ void gr_fill(int x1, int y1, int x2, int y2) x2 += overscan_offset_x; y2 += overscan_offset_y; - GGLContext *gl = gr_context; - gl->disable(gl, GGL_TEXTURE_2D); - gl->recti(gl, x1, y1, x2, y2); + if (outside(x1, y1) || outside(x2-1, y2-1)) return; + + unsigned char* p = gr_draw->data + y1 * gr_draw->row_bytes + x1 * gr_draw->pixel_bytes; + if (gr_current_a == 255) { + int x, y; + for (y = y1; y < y2; ++y) { + unsigned char* px = p; + for (x = x1; x < x2; ++x) { + *px++ = gr_current_r; + *px++ = gr_current_g; + *px++ = gr_current_b; + px++; + } + p += gr_draw->row_bytes; + } + } else if (gr_current_a > 0) { + int x, y; + for (y = y1; y < y2; ++y) { + unsigned char* px = p; + for (x = x1; x < x2; ++x) { + *px = (*px * (255-gr_current_a) + gr_current_r * gr_current_a) / 255; + ++px; + *px = (*px * (255-gr_current_a) + gr_current_g * gr_current_a) / 255; + ++px; + *px = (*px * (255-gr_current_a) + gr_current_b * gr_current_a) / 255; + ++px; + ++px; + } + p += gr_draw->row_bytes; + } + } } -void gr_blit(gr_surface source, int sx, int sy, int w, int h, int dx, int dy) { - if (gr_context == NULL || source == NULL) { +void gr_blit(GRSurface* source, int sx, int sy, int w, int h, int dx, int dy) { + if (source == NULL) return; + + if (gr_draw->pixel_bytes != source->pixel_bytes) { + printf("gr_blit: source has wrong format\n"); return; } - GGLContext *gl = gr_context; dx += overscan_offset_x; dy += overscan_offset_y; - 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); + if (outside(dx, dy) || outside(dx+w-1, dy+h-1)) return; + + unsigned char* src_p = source->data + sy*source->row_bytes + sx*source->pixel_bytes; + unsigned char* dst_p = gr_draw->data + dy*gr_draw->row_bytes + dx*gr_draw->pixel_bytes; + + int i; + for (i = 0; i < h; ++i) { + memcpy(dst_p, src_p, w * source->pixel_bytes); + src_p += source->row_bytes; + dst_p += gr_draw->row_bytes; + } } -unsigned int gr_get_width(gr_surface surface) { +unsigned int gr_get_width(GRSurface* surface) { if (surface == NULL) { return 0; } - return ((GGLSurface*) surface)->width; + return surface->width; } -unsigned int gr_get_height(gr_surface surface) { +unsigned int gr_get_height(GRSurface* surface) { if (surface == NULL) { return 0; } - return ((GGLSurface*) surface)->height; + return surface->height; } static void gr_init_font(void) { gr_font = calloc(sizeof(*gr_font), 1); - int res = res_create_surface("font", (void**)&(gr_font->texture)); + int res = res_create_surface("font", &(gr_font->texture)); if (res == 0) { // The font image should be a 96x2 array of character images. The // columns are the printable ASCII characters 0x20 - 0x7f. The @@ -340,7 +411,8 @@ static void gr_init_font(void) gr_font->texture = malloc(sizeof(*gr_font->texture)); gr_font->texture->width = font.width; gr_font->texture->height = font.height; - gr_font->texture->stride = font.width; + gr_font->texture->row_bytes = font.width; + gr_font->texture->pixel_bytes = 1; unsigned char* bits = malloc(font.width * font.height); gr_font->texture->data = (void*) bits; @@ -355,17 +427,61 @@ static void gr_init_font(void) gr_font->cwidth = font.cwidth; gr_font->cheight = font.cheight; } +} - // interpret the grayscale as alpha - gr_font->texture->format = GGL_PIXEL_FORMAT_A_8; +#if 0 +// Exercises many of the gr_*() functions; useful for testing. +static void gr_test() { + GRSurface** images; + int frames; + int result = res_create_multi_surface("icon_installing", &frames, &images); + if (result < 0) { + printf("create surface %d\n", result); + gr_exit(); + return; + } + + time_t start = time(NULL); + int x; + for (x = 0; x <= 1200; ++x) { + if (x < 400) { + gr_color(0, 0, 0, 255); + } else { + gr_color(0, (x-400)%128, 0, 255); + } + gr_clear(); + + gr_color(255, 0, 0, 255); + gr_surface frame = images[x%frames]; + gr_blit(frame, 0, 0, frame->width, frame->height, x, 0); + + gr_color(255, 0, 0, 128); + gr_fill(400, 150, 600, 350); + + gr_color(255, 255, 255, 255); + gr_text(500, 225, "hello, world!", 0); + gr_color(255, 255, 0, 128); + gr_text(300+x, 275, "pack my box with five dozen liquor jugs", 1); + + gr_color(0, 0, 255, 128); + gr_fill(gr_draw->width - 200 - x, 300, gr_draw->width - x, 500); + + gr_flip(); + } + printf("getting end time\n"); + time_t end = time(NULL); + printf("got end time\n"); + printf("start %ld end %ld\n", (long)start, (long)end); + if (end > start) { + printf("%.2f fps\n", ((double)x) / (end-start)); + } } +#endif 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. @@ -377,25 +493,16 @@ int gr_init(void) return -1; } - gr_fb_fd = get_framebuffer(gr_framebuffer); - if (gr_fb_fd < 0) { + if (get_framebuffer(&gr_framebuffer) < 0) { gr_exit(); return -1; } - get_memory_surface(&gr_mem_surface); - printf("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); + gr_fb_fd, gr_draw->width, gr_draw->height); - gl->activeTexture(gl, 0); - gl->enable(gl, GGL_BLEND); - gl->blendFunc(gl, GGL_SRC_ALPHA, GGL_ONE_MINUS_SRC_ALPHA); + gr_flip(); + gr_flip(); gr_fb_blank(true); gr_fb_blank(false); @@ -408,26 +515,24 @@ 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; + + if (!double_buffered) { + if (gr_draw) free(gr_draw->data); + free(gr_draw); + } } int gr_fb_width(void) { - return gr_framebuffer[0].width - 2*overscan_offset_x; + return gr_draw->width - 2*overscan_offset_x; } int gr_fb_height(void) { - return gr_framebuffer[0].height - 2*overscan_offset_y; -} - -gr_pixel *gr_fb_data(void) -{ - return (unsigned short *) gr_mem_surface.data; + return gr_draw->height - 2*overscan_offset_y; } void gr_fb_blank(bool blank) |