ThorVG: update to v0.11.0 release.

See https://github.com/thorvg/thorvg/releases/tag/v0.11.0

+ Infrastructure
    Repository folder structure was make it more intuitive and coherent.
        "thorvg/src/lib" -> "thorvg/src/common"
            (providing essential common functionalities
                used internally among the renderer and sub-modules)
        "thorvg/src/lib" -> "thorvg/src/renderer"
            (for vector drawing features)

+ SVG related
    Fix stroke regression https://github.com/thorvg/thorvg/issues/1670
    Support stroke dash offset function https://github.com/thorvg/thorvg/issues/1591#issuecomment-1681319321
    Support Focal property in Radial Gradient https://github.com/thorvg/thorvg/issues/1558

1 files changed, 158 insertions, 0 deletions

diff --git a/thirdparty/thorvg/src/renderer/sw_engine/tvgSwImage.cpp b/thirdparty/thorvg/src/renderer/sw_engine/tvgSwImage.cpp
new file mode 100644
index 0000000000..b1624037bc
--- /dev/null
+++ b/thirdparty/thorvg/src/renderer/sw_engine/tvgSwImage.cpp
@@ -0,0 +1,158 @@
+/*
+ * Copyright (c) 2020 - 2023 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.
+ */
+
+#include "tvgMath.h"
+#include "tvgSwCommon.h"
+
+/************************************************************************/
+/* Internal Class Implementation                                        */
+/************************************************************************/
+
+static inline bool _onlyShifted(const Matrix* m)
+{
+    if (mathEqual(m->e11, 1.0f) && mathEqual(m->e22, 1.0f) && mathZero(m->e12) && mathZero(m->e21)) return true;
+    return false;
+}
+
+
+static bool _genOutline(SwImage* image, const RenderMesh* mesh, const Matrix* transform, SwMpool* mpool, unsigned tid)
+{
+    image->outline = mpoolReqOutline(mpool, tid);
+    auto outline = image->outline;
+
+    outline->pts.reserve(5);
+    outline->types.reserve(5);
+    outline->cntrs.reserve(1);
+    outline->closed.reserve(1);
+
+    Point to[4];
+    if (mesh->triangleCnt > 0) {
+        // TODO: Optimise me. We appear to calculate this exact min/max bounding area in multiple
+        // places. We should be able to re-use one we have already done? Also see:
+        //   tvgPicture.h --> bounds
+        //   tvgSwRasterTexmap.h --> _rasterTexmapPolygonMesh
+        //
+        // TODO: Should we calculate the exact path(s) of the triangle mesh instead?
+        // i.e. copy tvgSwShape.capp -> _genOutline?
+        //
+        // TODO: Cntrs?
+        auto triangles = mesh->triangles;
+        auto min = triangles[0].vertex[0].pt;
+        auto max = triangles[0].vertex[0].pt;
+
+        for (uint32_t i = 0; i < mesh->triangleCnt; ++i) {
+            if (triangles[i].vertex[0].pt.x < min.x) min.x = triangles[i].vertex[0].pt.x;
+            else if (triangles[i].vertex[0].pt.x > max.x) max.x = triangles[i].vertex[0].pt.x;
+            if (triangles[i].vertex[0].pt.y < min.y) min.y = triangles[i].vertex[0].pt.y;
+            else if (triangles[i].vertex[0].pt.y > max.y) max.y = triangles[i].vertex[0].pt.y;
+
+            if (triangles[i].vertex[1].pt.x < min.x) min.x = triangles[i].vertex[1].pt.x;
+            else if (triangles[i].vertex[1].pt.x > max.x) max.x = triangles[i].vertex[1].pt.x;
+            if (triangles[i].vertex[1].pt.y < min.y) min.y = triangles[i].vertex[1].pt.y;
+            else if (triangles[i].vertex[1].pt.y > max.y) max.y = triangles[i].vertex[1].pt.y;
+
+            if (triangles[i].vertex[2].pt.x < min.x) min.x = triangles[i].vertex[2].pt.x;
+            else if (triangles[i].vertex[2].pt.x > max.x) max.x = triangles[i].vertex[2].pt.x;
+            if (triangles[i].vertex[2].pt.y < min.y) min.y = triangles[i].vertex[2].pt.y;
+            else if (triangles[i].vertex[2].pt.y > max.y) max.y = triangles[i].vertex[2].pt.y;
+        }
+        to[0] = {min.x, min.y};
+        to[1] = {max.x, min.y};
+        to[2] = {max.x, max.y};
+        to[3] = {min.x, max.y};
+    } else {
+        auto w = static_cast<float>(image->w);
+        auto h = static_cast<float>(image->h);
+        to[0] = {0, 0};
+        to[1] = {w, 0};
+        to[2] = {w, h};
+        to[3] = {0, h};
+    }
+
+    for (int i = 0; i < 4; i++) {
+        outline->pts.push(mathTransform(&to[i], transform));
+        outline->types.push(SW_CURVE_TYPE_POINT);
+    }
+
+    outline->pts.push(outline->pts[0]);
+    outline->types.push(SW_CURVE_TYPE_POINT);
+    outline->cntrs.push(outline->pts.count - 1);
+    outline->closed.push(true);
+
+    image->outline = outline;
+
+    return true;
+}
+
+
+/************************************************************************/
+/* External Class Implementation                                        */
+/************************************************************************/
+
+bool imagePrepare(SwImage* image, const RenderMesh* mesh, const Matrix* transform, const SwBBox& clipRegion, SwBBox& renderRegion, SwMpool* mpool, unsigned tid)
+{
+    image->direct = _onlyShifted(transform);
+
+    //Fast track: Non-transformed image but just shifted.
+    if (image->direct) {
+        image->ox = -static_cast<int32_t>(round(transform->e13));
+        image->oy = -static_cast<int32_t>(round(transform->e23));
+    //Figure out the scale factor by transform matrix
+    } else {
+        auto scaleX = sqrtf((transform->e11 * transform->e11) + (transform->e21 * transform->e21));
+        auto scaleY = sqrtf((transform->e22 * transform->e22) + (transform->e12 * transform->e12));
+        image->scale = (fabsf(scaleX - scaleY) > 0.01f) ? 1.0f : scaleX;
+
+        if (mathZero(transform->e12) && mathZero(transform->e21)) image->scaled = true;
+        else image->scaled = false;
+    }
+
+    if (!_genOutline(image, mesh, transform, mpool, tid)) return false;
+    return mathUpdateOutlineBBox(image->outline, clipRegion, renderRegion, image->direct);
+}
+
+
+bool imageGenRle(SwImage* image, const SwBBox& renderRegion, bool antiAlias)
+{
+    if ((image->rle = rleRender(image->rle, image->outline, renderRegion, antiAlias))) return true;
+
+    return false;
+}
+
+
+void imageDelOutline(SwImage* image, SwMpool* mpool, uint32_t tid)
+{
+    mpoolRetOutline(mpool, tid);
+    image->outline = nullptr;
+}
+
+
+void imageReset(SwImage* image)
+{
+    rleReset(image->rle);
+}
+
+
+void imageFree(SwImage* image)
+{
+    rleFree(image->rle);
+}