feat: godot-engine-source-4.3-stable

engine/thirdparty/thorvg/src/renderer/sw_engine/tvgSwRasterC.h

@@ -0,0 +1,163 @@
+/*
+ * Copyright (c) 2021 - 2024 the ThorVG project. All rights reserved.
+
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+template<typename PIXEL_T>
+static void inline cRasterPixels(PIXEL_T* dst, PIXEL_T val, uint32_t offset, int32_t len)
+{
+    dst += offset;
+
+    //fix the misaligned memory
+    auto alignOffset = (long long) dst % 8;
+    if (alignOffset > 0) {
+        if (sizeof(PIXEL_T) == 4) alignOffset /= 4;
+        else if (sizeof(PIXEL_T) == 1) alignOffset = 8 - alignOffset;
+        while (alignOffset > 0 && len > 0) {
+            *dst++ = val;
+            --len;
+            --alignOffset;
+        }
+    }
+
+    //64bits faster clear
+    if ((sizeof(PIXEL_T) == 4)) {
+        auto val64 = (uint64_t(val) << 32) | uint64_t(val);
+        while (len > 1) {
+            *reinterpret_cast<uint64_t*>(dst) = val64;
+            len -= 2;
+            dst += 2;
+        }
+    } else if (sizeof(PIXEL_T) == 1) {
+        auto val32 = (uint32_t(val) << 24) | (uint32_t(val) << 16) | (uint32_t(val) << 8) | uint32_t(val);
+        auto val64 = (uint64_t(val32) << 32) | val32;
+        while (len > 7) {
+            *reinterpret_cast<uint64_t*>(dst) = val64;
+            len -= 8;
+            dst += 8;
+        }
+    }
+
+    //leftovers
+    while (len--) *dst++ = val;
+}
+
+
+static bool inline cRasterTranslucentRle(SwSurface* surface, const SwRleData* rle, uint8_t r, uint8_t g, uint8_t b, uint8_t a)
+{
+    auto span = rle->spans;
+
+    //32bit channels
+    if (surface->channelSize == sizeof(uint32_t)) {
+        auto color = surface->join(r, g, b, a);
+        uint32_t src;
+        for (uint32_t i = 0; i < rle->size; ++i, ++span) {
+            auto dst = &surface->buf32[span->y * surface->stride + span->x];
+            if (span->coverage < 255) src = ALPHA_BLEND(color, span->coverage);
+            else src = color;
+            auto ialpha = IA(src);
+            for (uint32_t x = 0; x < span->len; ++x, ++dst) {
+                *dst = src + ALPHA_BLEND(*dst, ialpha);
+            }
+        }
+    //8bit grayscale
+    } else if (surface->channelSize == sizeof(uint8_t)) {
+        uint8_t src;
+        for (uint32_t i = 0; i < rle->size; ++i, ++span) {
+            auto dst = &surface->buf8[span->y * surface->stride + span->x];
+            if (span->coverage < 255) src = MULTIPLY(span->coverage, a);
+            else src = a;
+            auto ialpha = ~a;
+            for (uint32_t x = 0; x < span->len; ++x, ++dst) {
+                *dst = src + MULTIPLY(*dst, ialpha);
+            }
+        }
+    }
+    return true;
+}
+
+
+static bool inline cRasterTranslucentRect(SwSurface* surface, const SwBBox& region, uint8_t r, uint8_t g, uint8_t b, uint8_t a)
+{
+    auto h = static_cast<uint32_t>(region.max.y - region.min.y);
+    auto w = static_cast<uint32_t>(region.max.x - region.min.x);
+
+    //32bits channels
+    if (surface->channelSize == sizeof(uint32_t)) {
+        auto color = surface->join(r, g, b, a);
+        auto buffer = surface->buf32 + (region.min.y * surface->stride) + region.min.x;
+        auto ialpha = 255 - a;
+        for (uint32_t y = 0; y < h; ++y) {
+            auto dst = &buffer[y * surface->stride];
+            for (uint32_t x = 0; x < w; ++x, ++dst) {
+                *dst = color + ALPHA_BLEND(*dst, ialpha);
+            }
+        }
+    //8bit grayscale
+    } else if (surface->channelSize == sizeof(uint8_t)) {
+        auto buffer = surface->buf8 + (region.min.y * surface->stride) + region.min.x;
+        auto ialpha = ~a;
+        for (uint32_t y = 0; y < h; ++y) {
+            auto dst = &buffer[y * surface->stride];
+            for (uint32_t x = 0; x < w; ++x, ++dst) {
+                *dst = a + MULTIPLY(*dst, ialpha);
+            }
+        }
+    }
+    return true;
+}
+
+
+static bool inline cRasterABGRtoARGB(Surface* surface)
+{
+    TVGLOG("SW_ENGINE", "Convert ColorSpace ABGR - ARGB [Size: %d x %d]", surface->w, surface->h);
+
+    //64bits faster converting
+    if (surface->w % 2 == 0) {
+        auto buffer = reinterpret_cast<uint64_t*>(surface->buf32);
+        for (uint32_t y = 0; y < surface->h; ++y, buffer += surface->stride / 2) {
+            auto dst = buffer;
+            for (uint32_t x = 0; x < surface->w / 2; ++x, ++dst) {
+                auto c = *dst;
+                //flip Blue, Red channels
+                *dst = (c & 0xff000000ff000000) + ((c & 0x00ff000000ff0000) >> 16) + (c & 0x0000ff000000ff00) + ((c & 0x000000ff000000ff) << 16);
+            }
+        }
+    //default converting
+    } else {
+        auto buffer = surface->buf32;
+        for (uint32_t y = 0; y < surface->h; ++y, buffer += surface->stride) {
+            auto dst = buffer;
+            for (uint32_t x = 0; x < surface->w; ++x, ++dst) {
+                auto c = *dst;
+                //flip Blue, Red channels
+                *dst = (c & 0xff000000) + ((c & 0x00ff0000) >> 16) + (c & 0x0000ff00) + ((c & 0x000000ff) << 16);
+            }
+        }
+    }
+    return true;
+}
+
+
+static bool inline cRasterARGBtoABGR(Surface* surface)
+{
+    //exactly same with ABGRtoARGB
+    return cRasterABGRtoARGB(surface);
+}