mirror/RetroArch
1
0
Fork 0
mirror of https://github.com/libretro/RetroArch synced 2025-03-29 22:20:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

video_omap: add font rendering for RGB565 framebuffer

Browse Source
This commit is contained in:
Tobias Jakobi 2013-12-04 03:17:14 +01:00 committed by twinaphex
parent a5352f706c
commit b77171f350
1 changed files with 76 additions and 44 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

120
gfx/omap_gfx.c
View File

@ -136,6 +136,14 @@ static int read_sysfs(const char *fname, char *buff, size_t size) {
return 0;
}
static inline void put_pixel_rgb565(uint16_t *p, unsigned r, unsigned g, unsigned b) {
*p = (((r >> 3) & 0x1f) << 11) | (((g >> 2) & 0x3f) << 5) | ((b >> 3) & 0x1f);
}
static inline void put_pixel_argb8888(uint32_t *p, unsigned r, unsigned g, unsigned b) {
// TODO: implement!
}
static int omapfb_detect_screen(omapfb_data_t *pdata) {
int fb_id, overlay_id = -1, display_id = -1;
char buff[64], manager_name[64], display_name[64];
@ -586,6 +594,48 @@ static void omapfb_prepare(omapfb_data_t *pdata) {
pdata->cur_page->used = true;
}
static void omapfb_blend_glyph_rgb565(omapfb_data_t *pdata, const uint8_t *src, uint8_t *f_rgb,
unsigned g_width, unsigned g_height, unsigned g_pitch,
unsigned dst_x, unsigned dst_y) {
unsigned x, y;
unsigned dst_pitch;
uint16_t *dst;
dst_pitch = (pdata->current_state->si.xres * pdata->bpp) >> 1;
dst = (uint16_t*)pdata->cur_page->buf + dst_y * dst_pitch + dst_x;
for (y = 0; y < g_height; ++y, src += g_pitch, dst += dst_pitch) {
for (x = 0; x < g_width; ++x) {
const uint8_t blend = src[x];
const uint16_t out = dst[x];
unsigned r = (out & 0xf800) >> 11;
unsigned g = (out & 0x07e0) >> 5;
unsigned b = (out & 0x001f) >> 0;
if (blend == 0) continue;
if (blend == 255) {
put_pixel_rgb565(&dst[x], f_rgb[0], f_rgb[1], f_rgb[2]);
continue;
}
r = (r << 3) | (r >> 2);
g = (g << 2) | (g >> 4);
b = (b << 3) | (b >> 2);
put_pixel_rgb565(&dst[x], (r * (256 - blend) + f_rgb[0] * blend) >> 8,
(g * (256 - blend) + f_rgb[1] * blend) >> 8,
(b * (256 - blend) + f_rgb[2] * blend) >> 8);
}
}
}
static void omapfb_blend_glyph_argb8888(omapfb_data_t *pdata, const uint8_t *src, uint8_t *f_rgb,
unsigned g_width, unsigned g_height, unsigned g_pitch,
unsigned dst_x, unsigned dst_y) {
// TODO: implement!
}
static void omapfb_blit_frame(omapfb_data_t *pdata, const void *src,
unsigned height, unsigned src_pitch) {
unsigned i, dst_pitch;
@ -605,9 +655,7 @@ typedef struct omap_video {
void *font;
const font_renderer_driver_t *font_driver;
uint8_t font_r;
uint8_t font_g;
uint8_t font_b;
uint8_t font_rgb[4];
unsigned bytes_per_pixel;
@ -640,34 +688,31 @@ static void omap_init_font(omap_video_t *vid, const char *font_path, unsigned fo
g = g < 0 ? 0 : (g > 255 ? 255 : g);
b = b < 0 ? 0 : (b > 255 ? 255 : b);
vid->font_r = r;
vid->font_g = g;
vid->font_b = b;
vid->font_rgb[0] = r;
vid->font_rgb[1] = g;
vid->font_rgb[2] = b;
} else {
RARCH_LOG("video_omap: font init failed\n");
}
}
static void omap_render_msg(omap_video_t *vid, const char *msg) {
if (!vid->font) return;
struct font_output_list out;
struct font_output *head;
const int msg_base_x = g_settings.video.msg_pos_x * vid->width;
const int msg_base_y = (1.0 - g_settings.video.msg_pos_y) * vid->height;
if (vid->font == NULL) return;
vid->font_driver->render_msg(vid->font, msg, &out);
struct font_output *head = out.head;
return; /* TODO: implement */
/*int msg_base_x = g_settings.video.msg_pos_x * width;
int msg_base_y = (1.0 - g_settings.video.msg_pos_y) * height;
unsigned rshift = fmt->Rshift;
unsigned gshift = fmt->Gshift;
unsigned bshift = fmt->Bshift;
for (; head; head = head->next) {
for (head = out.head; head; head = head->next) {
int base_x = msg_base_x + head->off_x;
int base_y = msg_base_y - head->off_y - head->height;
const int max_width = vid->width - base_x;
const int max_height = vid->height - base_y;
int glyph_width = head->width;
int glyph_height = head->height;
@ -685,34 +730,21 @@ static void omap_render_msg(omap_video_t *vid, const char *msg) {
base_y = 0;
}
int max_width = width - base_x;
int max_height = height - base_y;
if (max_width <= 0 || max_height <= 0) continue;
if (max_width <= 0 || max_height <= 0)
continue;
if (glyph_width > max_width) glyph_width = max_width;
if (glyph_height > max_height) glyph_height = max_height;
if (glyph_width > max_width)
glyph_width = max_width;
if (glyph_height > max_height)
glyph_height = max_height;
uint32_t *out = (uint32_t*)buffer->pixels + base_y * (buffer->pitch >> 2) + base_x;
for (int y = 0; y < glyph_height; y++, src += head->pitch, out += buffer->pitch >> 2) {
for (int x = 0; x < glyph_width; x++) {
unsigned blend = src[x];
unsigned out_pix = out[x];
unsigned r = (out_pix >> rshift) & 0xff;
unsigned g = (out_pix >> gshift) & 0xff;
unsigned b = (out_pix >> bshift) & 0xff;
unsigned out_r = (r * (256 - blend) + vid->font_r * blend) >> 8;
unsigned out_g = (g * (256 - blend) + vid->font_g * blend) >> 8;
unsigned out_b = (b * (256 - blend) + vid->font_b * blend) >> 8;
out[x] = (out_r << rshift) | (out_g << gshift) | (out_b << bshift);
}
if (vid->bytes_per_pixel == 2) {
omapfb_blend_glyph_rgb565(vid->omap, src, vid->font_rgb,
glyph_width, glyph_height,
head->pitch, base_x, base_y);
} else {
omapfb_blend_glyph_argb8888(vid->omap, src, vid->font_rgb,
glyph_width, glyph_height,
head->pitch, base_x, base_y);
}
}*/
}
vid->font_driver->free_output(vid->font, &out);
}