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Abstract away generic function to read from 32-bit pixel buffer.

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This commit is contained in:
Pavel Krajcevski 2013-11-19 14:21:54 -05:00
parent 958c8909a4
commit cf4868fdb1
3 changed files with 24 additions and 19 deletions
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2
IO/config/ImageLoader.h.in
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@ -94,6 +94,8 @@ class ImageLoader {
uint32 GetChannelForPixel(uint32 x, uint32 y, uint32 ch); uint32 GetChannelForPixel(uint32 x, uint32 y, uint32 ch);
bool LoadFromPixelBuffer(uint32 *data);
public: public:
virtual ~ImageLoader() { virtual ~ImageLoader() {
if(m_RedData) { if(m_RedData) {

21
IO/src/ImageLoader.cpp
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@ -137,6 +137,27 @@ unsigned int ImageLoader::GetChannelForPixel(uint32 x, uint32 y, uint32 ch) {
return val; return val;
} }
bool ImageLoader::LoadFromPixelBuffer(uint32 *data) {
const int nPixels = m_Width * m_Height;
m_RedData = new uint8[nPixels];
m_GreenData = new uint8[nPixels];
m_BlueData = new uint8[nPixels];
m_AlphaData = new uint8[nPixels];
for (uint32 i = 0; i < m_Width; i++) {
for (uint32 j = 0; j < m_Height; j++) {
uint32 idx = j*m_Height + i;
uint32 pixel = data[idx];
m_RedData[idx] = pixel & 0xFF;
m_GreenData[idx] = (pixel >> 8) & 0xFF;
m_BlueData[idx] = (pixel >> 16) & 0xFF;
m_AlphaData[idx] = (pixel >> 24) & 0xFF;
}
}
return true;
}
bool ImageLoader::LoadImage() { bool ImageLoader::LoadImage() {
// Do we already have pixel data? // Do we already have pixel data?

20
IO/src/ImageLoaderPVR.cpp
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@ -84,24 +84,6 @@ bool ImageLoaderPVR::ReadData() {
m_Width = hdr.getWidth(); m_Width = hdr.getWidth();
m_Height = hdr.getHeight(); m_Height = hdr.getHeight();
const int nPixels = m_Width * m_Height; return LoadFromPixelBuffer(reinterpret_cast<uint32 *>(pvrTex.getDataPtr()));
m_RedData = new uint8[nPixels];
m_GreenData = new uint8[nPixels];
m_BlueData = new uint8[nPixels];
m_AlphaData = new uint8[nPixels];
uint32 *data = (uint32 *)(pvrTex.getDataPtr());
for (uint32 i = 0; i < m_Width; i++) {
for (uint32 j = 0; j < m_Height; j++) {
uint32 idx = j*m_Height + i;
uint32 pixel = data[idx];
m_RedData[idx] = pixel & 0xFF;
m_GreenData[idx] = (pixel >> 8) & 0xFF;
m_BlueData[idx] = (pixel >> 16) & 0xFF;
m_AlphaData[idx] = (pixel >> 24) & 0xFF;
}
}
return true;
} }