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Optimized image flipping

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Added new extensible flipping system
Optimized NzTexture::Update(Face)
This commit is contained in:
Lynix
2012-06-22 23:18:37 +02:00
parent acc9b99ad2
commit 71cf7876c5
5 changed files with 140 additions and 35 deletions
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23
src/Nazara/Utility/Image.cpp
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@@ -494,24 +494,12 @@ bool NzImage::FlipHorizontally()
EnsureOwnership();
nzUInt8 bpp = NzPixelFormat::GetBPP(m_sharedImage->format);
unsigned int width = m_sharedImage->width;
unsigned int height = m_sharedImage->height;
unsigned int depth = (m_sharedImage->type == nzImageType_Cubemap) ? 6 : m_sharedImage->depth;
for (unsigned int level = 0; level < m_sharedImage->levelCount; ++level)
{
for (unsigned int z = 0; z < depth; ++z)
{
nzUInt8* ptr = &m_sharedImage->pixels[level][width*height*z];
unsigned int lineStride = width*bpp;
for (unsigned int y = 0; y < height; ++y)
{
for (unsigned int x = 0; x < width/2; ++x)
std::swap_ranges(&ptr[x*bpp], &ptr[(x+1)*bpp], &ptr[(width-x)*bpp]);
ptr += lineStride;
}
}
NzPixelFormat::Flip(nzPixelFlipping_Horizontally, m_sharedImage->format, width, height, depth, m_sharedImage->pixels[level], m_sharedImage->pixels[level]);
if (width > 1U)
width >>= 1;
@@ -545,19 +533,12 @@ bool NzImage::FlipVertically()
EnsureOwnership();
nzUInt8 bpp = NzPixelFormat::GetBPP(m_sharedImage->format);
unsigned int width = m_sharedImage->width;
unsigned int height = m_sharedImage->height;
unsigned int depth = (m_sharedImage->type == nzImageType_Cubemap) ? 6 : m_sharedImage->depth;
for (unsigned int level = 0; level < m_sharedImage->levelCount; ++level)
{
for (unsigned int z = 0; z < depth; ++z)
{
nzUInt8* ptr = &m_sharedImage->pixels[level][width*height*z];
unsigned int lineStride = width*bpp;
for (unsigned int y = 0; y < height/2; ++y)
std::swap_ranges(&ptr[y*lineStride], &ptr[(y+1)*lineStride-1], &ptr[(height-y-1)*lineStride]);
}
NzPixelFormat::Flip(nzPixelFlipping_Vertically, m_sharedImage->format, width, height, depth, m_sharedImage->pixels[level], m_sharedImage->pixels[level]);
if (width > 1U)
width >>= 1;