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video_omap: add font rendering for ARGB8888 framebuffer

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In constrast to the RGB565 code, this here is only compile tested.
This commit is contained in:
Tobias Jakobi 2013-12-04 03:25:30 +01:00 committed by twinaphex
parent b77171f350
commit 87843d607d
1 changed files with 34 additions and 6 deletions
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40
gfx/omap_gfx.c
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@ -141,7 +141,7 @@ static inline void put_pixel_rgb565(uint16_t *p, unsigned r, unsigned g, unsigne
}
static inline void put_pixel_argb8888(uint32_t *p, unsigned r, unsigned g, unsigned b) {
// TODO: implement!
*p = ((r << 16) & 0xff0000) | ((g << 8) & 0x00ff00) | ((b << 0) & 0x0000ff);
}
static int omapfb_detect_screen(omapfb_data_t *pdata) {
@ -600,6 +600,7 @@ static void omapfb_blend_glyph_rgb565(omapfb_data_t *pdata, const uint8_t *src,
unsigned x, y;
unsigned dst_pitch;
uint16_t *dst;
unsigned r, g, b;
dst_pitch = (pdata->current_state->si.xres * pdata->bpp) >> 1;
dst = (uint16_t*)pdata->cur_page->buf + dst_y * dst_pitch + dst_x;
@ -609,16 +610,16 @@ static void omapfb_blend_glyph_rgb565(omapfb_data_t *pdata, const uint8_t *src,
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 = (out & 0xf800) >> 11;
g = (out & 0x07e0) >> 5;
b = (out & 0x001f) >> 0;
r = (r << 3) | (r >> 2);
g = (g << 2) | (g >> 4);
b = (b << 3) | (b >> 2);
@ -633,7 +634,34 @@ static void omapfb_blend_glyph_rgb565(omapfb_data_t *pdata, const uint8_t *src,
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!
unsigned x, y;
unsigned dst_pitch;
uint32_t *dst;
unsigned r, g, b;
dst_pitch = (pdata->current_state->si.xres * pdata->bpp) >> 2;
dst = (uint32_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 uint32_t out = dst[x];
if (blend == 0) continue;
if (blend == 255) {
put_pixel_argb8888(&dst[x], f_rgb[0], f_rgb[1], f_rgb[2]);
continue;
}
r = (out & 0xff0000) >> 16;
g = (out & 0x00ff00) >> 8;
b = (out & 0x0000ff) >> 0;
put_pixel_argb8888(&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_blit_frame(omapfb_data_t *pdata, const void *src,