drewcassidy/nvidia-texture-tools
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Add vertical flip.

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This commit is contained in:
castano 2010-05-05 00:24:31 +00:00
parent ac5f849e91
commit 85db14f213
4 changed files with 36 additions and 2 deletions
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19
src/nvimage/FloatImage.cpp
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@ -941,6 +941,25 @@ void FloatImage::applyKernelHorizontal(const PolyphaseKernel & k, int y, uint c,
}
}
// Vertical flip in place.
void FloatImage::flip()
{
const uint w = m_width;
const uint h = m_height;
const uint h2 = h / 2;
for (uint c = 0; c < m_componentNum; c++) {
for (uint y = 0; y < h2; y++) {
float * src = scanline(y, c);
float * dst = scanline(h - 1 - y, c);
for (uint x = 0; x < w; x++) {
swap(src[x], dst[x]);
}
}
}
}
FloatImage* FloatImage::clone() const
{
FloatImage* copy = new FloatImage();

5
src/nvimage/FloatImage.h
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@ -77,7 +77,6 @@ public:
NVIMAGE_API FloatImage * resize(const Filter & filter, uint w, uint h, WrapMode wm) const;
NVIMAGE_API FloatImage * resize(const Filter & filter, uint w, uint h, WrapMode wm, uint alpha) const;
//@}
NVIMAGE_API float applyKernel(const Kernel2 * k, int x, int y, uint c, WrapMode wm) const;
NVIMAGE_API float applyKernelVertical(const Kernel1 * k, int x, int y, uint c, WrapMode wm) const;
@ -86,7 +85,9 @@ public:
NVIMAGE_API void applyKernelHorizontal(const PolyphaseKernel & k, int y, uint c, WrapMode wm, float * output) const;
NVIMAGE_API void applyKernelVertical(const PolyphaseKernel & k, int x, uint c, uint a, WrapMode wm, float * output) const;
NVIMAGE_API void applyKernelHorizontal(const PolyphaseKernel & k, int y, uint c, uint a, WrapMode wm, float * output) const;
NVIMAGE_API void flip();
//@}
uint width() const { return m_width; }
uint height() const { return m_height; }

11
src/nvtt/TexImage.cpp
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@ -1086,3 +1086,14 @@ float TexImage::rootMeanSquaredError_alpha(const TexImage & reference) const
return float(sqrt(mse / totalCount));
}
void TexImage::flipVertically() {
detach();
foreach (i, m->imageArray)
{
if (m->imageArray[i] == NULL) continue;
m->imageArray[i]->flip();
}
}

3
src/nvtt/nvtt.h
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@ -447,6 +447,9 @@ namespace nvtt
NVTT_API float rootMeanSquaredError_rgb(const TexImage & reference) const;
NVTT_API float rootMeanSquaredError_alpha(const TexImage & reference) const;
// Geometric transforms.
NVTT_API void flipVertically();
private:
void detach();