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Update StarImageProcessing.cpp

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This commit is contained in:
Kae 2024-12-28 10:58:44 +11:00
parent 81dfda9ea0
commit 9da08e898d
1 changed files with 6 additions and 2 deletions
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8
source/core/StarImageProcessing.cpp
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@ -26,7 +26,7 @@ Image scaleNearest(Image const& srcImage, Vec2F const& scale) {
} }
#pragma GCC push_options #pragma GCC push_options
#pragma GCC optimize("-O3") #pragma GCC optimize("-fno-unsafe-math-optimizations", "-ffloat-store")
Image scaleBilinear(Image const& srcImage, Vec2F const& scale) { Image scaleBilinear(Image const& srcImage, Vec2F const& scale) {
Vec2U srcSize = srcImage.size(); Vec2U srcSize = srcImage.size();
Vec2U destSize = Vec2U::round(vmult(Vec2F(srcSize), scale)); Vec2U destSize = Vec2U::round(vmult(Vec2F(srcSize), scale));
@ -35,13 +35,17 @@ Image scaleBilinear(Image const& srcImage, Vec2F const& scale) {
Image destImage(destSize, srcImage.pixelFormat()); Image destImage(destSize, srcImage.pixelFormat());
auto lerpVec = [](float const& offset, Vec4F f0, Vec4F f1) {
return f0 * (1 - offset) + f1 * (offset);
};
for (unsigned y = 0; y < destSize[1]; ++y) { for (unsigned y = 0; y < destSize[1]; ++y) {
for (unsigned x = 0; x < destSize[0]; ++x) { for (unsigned x = 0; x < destSize[0]; ++x) {
auto pos = vdiv(Vec2F(x, y), scale); auto pos = vdiv(Vec2F(x, y), scale);
auto ipart = Vec2I::floor(pos); auto ipart = Vec2I::floor(pos);
auto fpart = pos - Vec2F(ipart); auto fpart = pos - Vec2F(ipart);
auto result = lerp(fpart[1], lerp(fpart[0], Vec4F(srcImage.clamp(ipart[0], ipart[1])), Vec4F(srcImage.clamp(ipart[0] + 1, ipart[1]))), lerp(fpart[0], auto result = lerpVec(fpart[1], lerpVec(fpart[0], Vec4F(srcImage.clamp(ipart[0], ipart[1])), Vec4F(srcImage.clamp(ipart[0] + 1, ipart[1]))), lerpVec(fpart[0],
Vec4F(srcImage.clamp(ipart[0], ipart[1] + 1)), Vec4F(srcImage.clamp(ipart[0] + 1, ipart[1] + 1)))); Vec4F(srcImage.clamp(ipart[0], ipart[1] + 1)), Vec4F(srcImage.clamp(ipart[0] + 1, ipart[1] + 1))));
destImage.set({x, y}, Vec4B(result)); destImage.set({x, y}, Vec4B(result));