2 * Copyright (c) 2021 - 2023 the ThorVG project. All rights reserved.
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in all
12 * copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 static void inline cRasterRGBA32(uint32_t *dst, uint32_t val, uint32_t offset, int32_t len)
26 while (len--) *dst++ = val;
30 static bool inline cRasterTranslucentRle(SwSurface* surface, const SwRleData* rle, uint32_t color)
32 auto span = rle->spans;
35 for (uint32_t i = 0; i < rle->size; ++i, ++span) {
36 auto dst = &surface->buffer[span->y * surface->stride + span->x];
38 if (span->coverage < 255) src = ALPHA_BLEND(color, span->coverage);
41 for (uint32_t x = 0; x < span->len; ++x, ++dst) {
42 *dst = src + ALPHA_BLEND(*dst, _ialpha(src));
49 static bool inline cRasterTranslucentRect(SwSurface* surface, const SwBBox& region, uint32_t color)
51 auto buffer = surface->buffer + (region.min.y * surface->stride) + region.min.x;
52 auto h = static_cast<uint32_t>(region.max.y - region.min.y);
53 auto w = static_cast<uint32_t>(region.max.x - region.min.x);
54 auto ialpha = _ialpha(color);
56 for (uint32_t y = 0; y < h; ++y) {
57 auto dst = &buffer[y * surface->stride];
58 for (uint32_t x = 0; x < w; ++x, ++dst) {
59 *dst = color + ALPHA_BLEND(*dst, ialpha);