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Made SVG rasterizations slightly more accurate.

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This commit is contained in:
Leon Styhre 2022-08-31 21:17:13 +02:00
parent ed69e46b42
commit 7b279a7c73
1 changed files with 8 additions and 3 deletions
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11
es-core/src/resources/TextureData.cpp
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@ -74,6 +74,7 @@ bool TextureData::initSVGFromMemory(const std::string& fileData)
if (mTile) {
if (mTileWidth == 0.0f && mTileHeight == 0.0f) {
rasterize = false;
mSourceWidth = svgImage->width;
mSourceHeight = svgImage->height;
}
@ -109,10 +110,14 @@ bool TextureData::initSVGFromMemory(const std::string& fileData)
std::vector<unsigned char> tempVector;
tempVector.reserve(mWidth * mHeight * 4);
NSVGrasterizer* rast = nsvgCreateRasterizer();
NSVGrasterizer* rast {nsvgCreateRasterizer()};
nsvgRasterize(rast, svgImage, 0, 0, mHeight / svgImage->height, tempVector.data(), mWidth,
mHeight, mWidth * 4);
// Compensate for rounding losses for a slightly more accurate rasterization.
const float compScale {(static_cast<float>(mHeight) / svgImage->height) *
(mSourceHeight / static_cast<float>(mHeight))};
nsvgRasterize(rast, svgImage, 0.0f, 0.0f, compScale, tempVector.data(), mWidth, mHeight,
mWidth * 4);
nsvgDeleteRasterizer(rast);