diff options
Diffstat (limited to 'fb-gui.c')
| -rw-r--r-- | fb-gui.c | 56 |
1 files changed, 36 insertions, 20 deletions
@@ -344,6 +344,17 @@ void shadow_draw_rgbdata(int x, int y, int pixels, unsigned char *rgb) sdirty[y]++; } +void shadow_merge_rgbdata(int x, int y, int pixels, int weight, + unsigned char *rgb) +{ + unsigned char *dest = shadow[y] + 3*x; + int i = 3*pixels; + + while (i-- > 0) + *(dest++) += *(rgb++) * weight / 100; + sdirty[y]++; +} + void shadow_darkify(int x1, int x2, int y1,int y2, int percent) { @@ -354,22 +365,25 @@ void shadow_darkify(int x1, int x2, int y1,int y2, int percent) h = x2, x2 = x1, x1 = h; if (y2 < y1) h = y2, y2 = y1, y1 = h; + + if (x1 < 0) + x1 = 0; + if (x2 >= swidth) + x2 = swidth; + + if (y1 < 0) + y1 = 0; + if (y2 >= sheight) + y2 = sheight; for (y = y1; y <= y2; y++) { - if (y < 0) - continue; - if (y >= sheight) - continue; sdirty[y]++; ptr = shadow[y]; - for (x = x1; x <= x2; x++) { - if (x < 0) - continue; - if (x >= swidth) - continue; - ptr[3*x+0] = ptr[3*x+0] * percent / 100; - ptr[3*x+1] = ptr[3*x+1] * percent / 100; - ptr[3*x+2] = ptr[3*x+2] * percent / 100; + ptr += 3*x1; + x = 3*(x2-x1+1); + while (x-- > 0) { + *ptr = *ptr * percent / 100; + ptr++; } } } @@ -384,18 +398,20 @@ void shadow_reverse(int x1, int x2, int y1,int y2) if (y2 < y1) h = y2, y2 = y1, y1 = h; + if (x1 < 0) + x1 = 0; + if (x2 >= swidth) + x2 = swidth; + + if (y1 < 0) + y1 = 0; + if (y2 >= sheight) + y2 = sheight; + for (y = y1; y <= y2; y++) { - if (y < 0) - continue; - if (y >= sheight) - continue; sdirty[y]++; ptr = shadow[y]; for (x = x1; x <= x2; x++) { - if (x < 0) - continue; - if (x >= swidth) - continue; ptr[3*x+0] = 255-ptr[3*x+0]; ptr[3*x+1] = 255-ptr[3*x+1]; ptr[3*x+2] = 255-ptr[3*x+2]; |