Comments (1)
Bitmap to GrayScale
for (uint32_t y = 0; y < bitmap.height(); y++) {
uint8_t* row = bitmap.data() + bitmap.stride() * y;
for (uint32_t x = 0; x < bitmap.width(); x++) {
uint32_t r = row[0];
uint32_t g = row[1];
uint32_t b = row[2];
uint32_t l = (r * 299 + g * 587 + b * 114);
row[0] = row[1] = row[2] = uint8_t(l / 1000);
row += 4;
}
}
from lunasvg.
Related Issues (20)
- Performance issue when used from ImGui as a SVG font loader HOT 10
- Taking Pull requests? SVG2ICO example. HOT 7
- Black box instead of image HOT 2
- Optional C++ version of plutovg HOT 3
- Is there chance that c6cad06 checking is braking the library HOT 7
- stack-buffer-overflow has occurred when running program svgpng in function gray_split_cubic at plutovg-ft-raster.c
- Floating point exception has occurred when running program svgpng in function blend_transformed_tiled_argb at plutovg-blend.c
- SEGV has occurred when running program svgpng in function lunasvg::Bitmap::clear at lunasvg.cpp
- C wrapper functions
- Render svg element HOT 14
- Local transformations and high-level function capable of simplifying some tasks HOT 2
- Local transformation and internal SVG element access - Element Box attributes HOT 5
- Local transformation and internal SVG element access - Text object attributes
- Local transformation and internal SVG element access - Element translation HOT 2
- Vulnerability Discovery HOT 2
- Unexpected PNG conversion from SVG file format HOT 1
- Objects with gradients are shown differently HOT 2
- Plans for lunasvg v3.0.0 Release HOT 10
- SVG bomb uses more and more memory without ever stopping
- how to get the library version information HOT 2
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