void SoXipCPUMprRender::readyBuffers(SoState *state)
{
SbXipImageDimensions dim(0, 0, 0);
SoXipDataImage *imgData = 0;
SbXipImage *image = 0;
// Volume
imgData = volume.getValue();
dim = SbXipImageDimensions(0,0,0);
if (imgData && (image = imgData->get()))
{
// If data has changed, update MPR
if (imgData->getDataId() != mVolDataId)
{
mVolDataId = imgData->getDataId();
mUpdateFlag |= UPDATE_MPR;
}
if (mVolDataType != image->getType() || mVolBitsUsed != image->getBitsStored())
{
mVolDataType = image->getType();
mVolBitsUsed = image->getBitsStored();
mMPRSize = SbVec2s(-1, -1); // force buffer resizing
}
mVolBuf = image->refBufferPtr();
dim = imgData->get()->getDimAllocated();
// If dimensions have changed, update Cache
if (dim != mVolDim)
{
mVolDim = dim;
mUpdateFlag |= UPDATE_MPRCACHE;
}
}
else
{
mVolBuf = 0;
mVolDim = dim;
mVolDataId = 0;
}
// Transfer function LUT
imgData = (SoXipDataImage *) SoXipLutElement::get(state);
if (imgData && (image = imgData->get()) &&
image->getType() == SbXipImage::FLOAT &&
image->getComponentLayoutType() == SbXipImage::RGBA)
{
// If there was no LUT before, resize buffers
if (!mLutBuf)
mMPRSize = SbVec2s(-1, -1);
mLutSize = image->getDimStored()[0];
mLutBuf = (float*) image->refBufferPtr();
// If data has changed, update MPR
if (imgData->getDataId() != mLutDataId)
{
mLutDataId = imgData->getDataId();
mUpdateFlag |= UPDATE_MPR;
}
}
else
{
// If there was a LUT before, force resizing
if (mLutBuf)
mMPRSize = SbVec2s(-1, -1);
mLutBuf = 0;
mLutSize = 0;
mLutDataId = 0;
}
}
SbXipImage* SoXipLoadBMP::loadBMP(const char *fileName)
{
try
{
BMP bmp;
bmp.ReadFromFile(fileName);
int numBits = bmp.TellBitDepth();
int width = bmp.TellWidth();
int height = bmp.TellHeight();
int bitsStored = 8;
int samplesPerPixel = 0;
SbXipImage::ComponentType compType = SbXipImage::INTERLEAVED;
SbXipImage::ComponentLayoutType compLayoutType = SbXipImage::RGB;
if(numBits<=24)
{
samplesPerPixel = 3;
compLayoutType = SbXipImage::RGB;
}
else if(numBits == 32)
{
samplesPerPixel = 4;
compLayoutType = SbXipImage::RGBA;
}
SbVec3f pos(0, 0, 0);
SbVec3f scale(width, height, 1);
SbMatrix rotMatrix(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1);
SbMatrix modelMatrix;
modelMatrix.setScale(scale);
//modelMatrix.setTransform(pos, SbRotation(rotMatrix), scale);
SbXipImage *image = new SbXipImage(SbXipImageDimensions(width, height, 1), SbXipImageDimensions(width, height, 1),
SbXipImage::UNSIGNED_BYTE, bitsStored, samplesPerPixel, compType, compLayoutType, modelMatrix);
unsigned char *buffer = (unsigned char *) image->refBufferPtr();
if(numBits<=24)
{
for(int i = 0; i < height; i++)
{
for(int j = 0; j < width; j++)
{
RGBApixel pixel = bmp.GetPixel(j,(height -1) - i );
buffer[3*i*width+3*j] = pixel.Red;
buffer[3*i*width+3*j+1] = pixel.Green;
buffer[3*i*width+3*j+2] = pixel.Blue;
}
}
}
else if(numBits == 32)
{
for(int i=0; i<height; i++)
{
for(int j=0; j<width; j++)
{
RGBApixel pixel = bmp.GetPixel(j, height-i);
buffer[4*i*width+4*j] = pixel.Red;
buffer[4*i*width+4*j+1] = pixel.Green;
buffer[4*i*width+4*j+2] = pixel.Blue;
buffer[4*i*width+4*j+3] = pixel.Alpha;
}
}
}
image->unrefBufferPtr();
return image;
}
catch(...)
{
SoDebugError::postInfo(__FILE__, "Exception loadBMP");
// Fix me need to delete allocated memory!
return 0;
}
}
