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SVG: Round document size to the nearest pixel. (#158)

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This commit is contained in:
Branimir Karadžić
2026-10-02 22:01:27 -07:00
committed by GitHub
parent 8869e43603
commit b96a703d89
2 changed files with 14 additions and 8 deletions
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7
include/bimg/decode.h
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@@ -35,9 +35,10 @@ namespace bimg
///
/// @remarks
/// Aspect ratio is always preserved. When both `_width` and `_height` are given the image is
/// scaled to fit inside of them. When both are 0 the image is rasterized at the size stated
/// in the document, scaled down if needed to fit inside of 4096x4096, which is also what
/// `bimg::imageParse` does.
/// scaled to fit inside of them. When both are 0 documents that fit inside of 4096x4096 are
/// rasterized at native scale, with pixel dimensions rounded to the nearest integer (half
/// up). Dimensions rounding to 0 are rejected. Larger documents are scaled down to fit
/// inside of 4096x4096. `bimg::imageParse` and `bimg::imageParseInfo` use the same size policy.
///
ImageContainer* imageParseSvg(
bx::AllocatorI* _allocator

15
src/image_decode.cpp
View File

@@ -1599,14 +1599,19 @@ namespace bimg
if (0 == _width
&& 0 == _height)
{
_width = uint32_t(bx::ceil(bx::min(width, float(kSvgMaxSize) ) ) );
_height = uint32_t(bx::ceil(bx::min(height, float(kSvgMaxSize) ) ) );
if (width <= float(kSvgMaxSize)
&& height <= float(kSvgMaxSize) )
{
_outWidth = _width;
_outHeight = _height;
_outWidth = uint32_t(bx::floor(width + 0.5f) );
_outHeight = uint32_t(bx::floor(height + 0.5f) );
if (0 == _outWidth
|| 0 == _outHeight)
{
nsvgDelete(image);
BX_ERROR_SET(_err, BIMG_ERROR, "SVG: Unsupported dimensions.");
return NULL;
}
_outScale = 1.0f;
return image;