diff options
Diffstat (limited to 'draw/imagedraw.c')
| -rw-r--r-- | draw/imagedraw.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/draw/imagedraw.c b/draw/imagedraw.c index 9f6d93bf..81d2bb05 100644 --- a/draw/imagedraw.c +++ b/draw/imagedraw.c @@ -22,6 +22,16 @@ getargb(byte *s, int w, int h, int u, int v) return s + ((w * v + u) << 2); } +static inline byte * +getag(byte *s, int w, int h, int u, int v) +{ + if (u < 0) u = 0; + if (v < 0) v = 0; + if (u >= w) u = w - 1; + if (v >= h) v = h - 1; + return s + ((w * v + u) << 1); +} + static inline int getcolor(byte *s, int w, int h, int n, int u, int v, int k) { @@ -39,6 +49,13 @@ lerp(int a, int b, int t) } static inline void +lerpag(byte *dst, byte *a, byte *b, int t) +{ + dst[0] = lerp(a[0], b[0], t); + dst[1] = lerp(a[1], b[1], t); +} + +static inline void lerpargb(byte *dst, byte *a, byte *b, int t) { dst[0] = lerp(a[0], b[0], t); @@ -64,6 +81,24 @@ samplemask(byte *s, int w, int h, int u, int v) } static inline void +sampleag(byte *s, int w, int h, int u, int v, byte *out) +{ + byte ab[4]; + byte cd[4]; + int ui = u >> 16; + int vi = v >> 16; + int ud = u & 0xFFFF; + int vd = v & 0xFFFF; + byte *a = getag(s, w, h, ui, vi); + byte *b = getag(s, w, h, ui+1, vi); + byte *c = getag(s, w, h, ui, vi+1); + byte *d = getag(s, w, h, ui+1, vi+1); + lerpag(ab, a, b, ud); + lerpag(cd, c, d, ud); + lerpag(out, ab, cd, vd); +} + +static inline void sampleargb(byte *s, int w, int h, int u, int v, byte *out) { byte ab[4]; @@ -129,6 +164,35 @@ img_1o1(byte * restrict src, byte cov, int len, byte * restrict dst, } static void +img_2o2(byte * restrict src, byte cov, int len, byte * restrict dst, + fz_pixmap *image, int u, int v, int fa, int fb) +{ + byte *samples = image->samples; + int w = image->w; + int h = image->h; + byte ag[2]; + + while (len--) + { + int sa; + cov += *src; *src = 0; src++; + if (cov != 0) + { + sampleag(samples, w, h, u, v, ag); + sa = FZ_COMBINE(FZ_EXPAND(ag[0]), FZ_EXPAND(cov)); + if (sa != 0) + { + dst[0] = FZ_BLEND(255, dst[0], sa); + dst[1] = FZ_BLEND(ag[1], dst[1], sa); + } + } + dst += 2; + u += fa; + v += fb; + } +} + +static void img_4o4(byte * restrict src, byte cov, int len, byte * restrict dst, fz_pixmap *image, int u, int v, int fa, int fb) { @@ -160,6 +224,63 @@ img_4o4(byte * restrict src, byte cov, int len, byte * restrict dst, } static void +img_w2i1o2(byte *ag, byte * restrict src, byte cov, int len, byte * restrict dst, + fz_pixmap *image, int u, int v, int fa, int fb) +{ + byte *samples = image->samples; + int w = image->w; + int h = image->h; + int alpha = FZ_EXPAND(ag[0]); + byte g = ag[1]; + + if (alpha == 0) + return; + if (alpha != 256) + { + while (len--) + { + int ca; + cov += *src; *src = 0; src++; + if (cov != 0) + { + ca = samplemask(samples, w, h, u, v); + ca =FZ_COMBINE(FZ_EXPAND(cov),FZ_EXPAND(ca)); + ca = FZ_COMBINE(ca, alpha); + if (ca != 0) + { + dst[0] = FZ_BLEND(255, dst[0], ca); + dst[1] = FZ_BLEND(g, dst[1], ca); + } + } + dst += 2; + u += fa; + v += fb; + } + } + else + { + while (len--) + { + int ca; + cov += *src; *src = 0; src++; + if (cov != 0) + { + ca = samplemask(samples, w, h, u, v); + ca =FZ_COMBINE(FZ_EXPAND(cov),FZ_EXPAND(ca)); + if (ca != 0) + { + dst[0] = FZ_BLEND(255, dst[0], ca); + dst[1] = FZ_BLEND(g, dst[1], ca); + } + } + dst += 2; + u += fa; + v += fb; + } + } +} + +static void img_w4i1o4(byte *argb, byte * restrict src, byte cov, int len, byte * restrict dst, fz_pixmap *image, int u, int v, int fa, int fb) { @@ -223,5 +344,7 @@ img_w4i1o4(byte *argb, byte * restrict src, byte cov, int len, byte * restrict d } void (*fz_img_1o1)(byte*, byte, int, byte*, fz_pixmap *image, int u, int v, int fa, int fb) = img_1o1; +void (*fz_img_2o2)(byte*, byte, int, byte*, fz_pixmap *image, int u, int v, int fa, int fb) = img_2o2; void (*fz_img_4o4)(byte*, byte, int, byte*, fz_pixmap *image, int u, int v, int fa, int fb) = img_4o4; +void (*fz_img_w2i1o2)(byte*, byte*, byte, int, byte*, fz_pixmap *image, int u, int v, int fa, int fb) = img_w2i1o2; void (*fz_img_w4i1o4)(byte*, byte*, byte, int, byte*, fz_pixmap *image, int u, int v, int fa, int fb) = img_w4i1o4; |