ulib/gfx/gfx.c

461 void gfx_surface_blend(struct gfx_surface* target, struct gfx_surface* source, unsigned destx, unsigned desty) {
462     gfx_blend(target, source, 0, 0, source->width, source->height, destx, desty);
468 void gfx_blend(gfx_surface* target, gfx_surface* source, unsigned srcx, unsigned srcy, unsigned width, unsigned height, unsigned destx, unsigned desty) {
469     assert(target->format == source->format);
471     xprintf("target %p, source %p, srcx %u, srcy %u, width %u, height %u, destx %u, desty %u\n", target, source, srcx, srcy, width, height, destx, desty);
473     if (destx >= target->width)
475     if (desty >= target->height)
483     if (destx + width > target->width)
484         width = target->width - destx;
485     if (desty + height > target->height)
486         height = target->height - desty;
494     if (source->format == ZX_PIXEL_FORMAT_RGB_565 && target->format == ZX_PIXEL_FORMAT_RGB_565) {
497         uint16_t* dest = &((uint16_t*)target->ptr)[destx + desty * target->stride];
498         unsigned dest_stride_diff = target->stride - width;
513     } else if (source->format == ZX_PIXEL_FORMAT_ARGB_8888 && target->format == ZX_PIXEL_FORMAT_ARGB_8888) {
516         uint32_t* dest = &((uint32_t*)target->ptr)[destx + desty * target->stride];
517         unsigned dest_stride_diff = target->stride - width;
533     } else if (source->format == ZX_PIXEL_FORMAT_RGB_x888 && target->format == ZX_PIXEL_FORMAT_RGB_x888) {
536         uint32_t* dest = &((uint32_t*)target->ptr)[destx + desty * target->stride];
537         unsigned dest_stride_diff = target->stride - width;
552     } else if (source->format == ZX_PIXEL_FORMAT_MONO_8 && target->format == ZX_PIXEL_FORMAT_MONO_8) {
555         uint8_t* dest = &((uint8_t*)target->ptr)[destx + desty * target->stride];
556         unsigned dest_stride_diff = target->stride - width;
572         xprintf("gfx_surface_blend: unimplemented colorspace combination (source %d target %d)\n", source->format, target->format);