static void drawSprite16_fromData15(agsurface_t *dib, cgdata *cg, int dx, int dy, int w, int h) {
int x, y;
WORD pic16;
WORD *pic_src = (WORD *)(cg->pic + cg->data_offset);
BYTE *pic_dst = GETOFFSET_PIXEL(dib, dx, dy);
BYTE *pic_dst_a = GETOFFSET_ALPHA(dib, dx, dy);
WORD *yl, pic15;
BYTE *ya;
for (y = 0; y < h; y++) {
yl = (WORD *)(pic_dst + y * dib->bytes_per_line);
ya = (BYTE *)(pic_dst_a + y * dib->width);
for (x = 0; x < w; x++) {
pic16 = *pic_src;
pic15 = PIX15(RGB_PIXR16(pic16),RGB_PIXG16(pic16),RGB_PIXB16(pic16));
if (*ya == 255) {
*yl = pic15;
} else if (*ya > 0) {
*yl= ALPHABLEND15(pic15, *yl, *ya);
}
yl ++;
ya++;
pic_src++;
}
pic_src += (cg->width - w);
}
}
static void image_copyAreaSP16_alphaBlend15(agsurface_t *dib, BYTE *sdata, BYTE *ddata, int w, int h, int lv) {
int x, y;
WORD *yls, *yld;
for (y = 0; y < h; y++) {
yls = (WORD *)(sdata + y * dib->bytes_per_line);
yld = (WORD *)(ddata + y * dib->bytes_per_line);
for (x = 0; x < w; x++) {
*yld = ALPHABLEND15(*yls, *yld, lv);
yls++; yld++;
}
}
}
static void image_wrapColor15(agsurface_t *dib, BYTE *dst, int w, int h, int col, int rate) {
int x, y;
WORD *yls, yld;
yld = trans_index2pixel(dib->depth, col);
for (y = 0; y < h; y++) {
yls = (WORD *)(dst + y * dib->bytes_per_line);
for (x = 0; x < w; x++) {
*yls = ALPHABLEND15(yld, *yls, rate);
yls++;
}
}
}
static void image_copyAreaSP16_shadow15(agsurface_t *dib, BYTE *sdata, BYTE *ddata, int w, int h, BYTE *adata, int lv) {
int x, y;
WORD *yls, *yld;
BYTE *yla;
for (y = 0; y < h; y++) {
yls = (WORD *)(sdata + y * dib->bytes_per_line);
yld = (WORD *)(ddata + y * dib->bytes_per_line);
yla = (BYTE *)(adata + y * dib->width);
for (x = 0; x < w; x++) {
*yld = ALPHABLEND15(*yls, *yld, (*yla * lv) / 255);
yls++; yld++; yla++;
}
}
}
void image_draw_antialiased_pattern15(agsurface_t *dib, agsurface_t *pattern, int dx, int dy, int dw, int dh, int col) {
int x, y;
BYTE *dst = GETOFFSET_PIXEL(dib, dx, dy);
BYTE *src = (BYTE *)pattern->pixel;
WORD *yd;
BYTE *ys;
for (y = 0; y < dh; y++) {
ys = (BYTE *)(src + y * pattern->bytes_per_line);
yd = (WORD *)(dst + y * dib->bytes_per_line);
for (x = 0; x < dw; x++) {
if (*ys != 0) {
*yd = ALPHABLEND15(col, *yd, (BYTE)*ys);
}
ys++; yd++;
}
}
}
