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Add support for EXR files

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This commit is contained in:
castano 2007-11-06 09:51:53 +00:00
parent 88c811fca5
commit 18c452a2a6
2 changed files with 28 additions and 21 deletions
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8
cmake/FindOpenEXR.cmake
View File

@ -13,7 +13,9 @@ ELSE (WIN32)
FIND_PATH(OPENEXR_INCLUDE_PATH ImfRgbaFile.h
/usr/include
/usr/local/include)
/usr/local/include
/usr/include/OpenEXR
/usr/local/include/OpenEXR)
FIND_LIBRARY(OPENEXR_HALF_LIBRARY
NAMES Half
@ -41,10 +43,10 @@ ELSE (WIN32)
ENDIF (WIN32)
IF (OPENEXR_INCLUDE_DIR AND OPENEXR_IMATH_LIBRARY AND OPENEXR_ILMIMF_LIBRARY AND OPENEXR_IEX_LIBRARY AND OPENEXR_HALF_LIBRARY)
IF (OPENEXR_INCLUDE_PATH AND OPENEXR_IMATH_LIBRARY AND OPENEXR_ILMIMF_LIBRARY AND OPENEXR_IEX_LIBRARY AND OPENEXR_HALF_LIBRARY)
SET(OPENEXR_FOUND TRUE)
SET(OPENEXR_LIBRARIES ${OPENEXR_IMATH_LIBRARY} ${OPENEXR_ILMIMF_LIBRARY} ${OPENEXR_IEX_LIBRARY} ${OPENEXR_HALF_LIBRARY} CACHE STRING "The libraries needed to use OpenEXR")
ENDIF (OPENEXR_INCLUDE_DIR AND OPENEXR_IMATH_LIBRARY AND OPENEXR_ILMIMF_LIBRARY AND OPENEXR_IEX_LIBRARY AND OPENEXR_HALF_LIBRARY)
ENDIF (OPENEXR_INCLUDE_PATH AND OPENEXR_IMATH_LIBRARY AND OPENEXR_ILMIMF_LIBRARY AND OPENEXR_IEX_LIBRARY AND OPENEXR_HALF_LIBRARY)
MARK_AS_ADVANCED(
OPENEXR_INCLUDE_DIR

31
src/nvimage/ImageIO.cpp
View File

@ -1019,26 +1019,31 @@ FloatImage * nv::ImageIO::loadFloatEXR(const char * fileName, Stream & s)
int width = box.max.x - box.min.y + 1;
int height = box.max.x - box.min.y + 1;
Array2D<Rgba> pixels;
pixels.resizeErase (height, width);
const Imf::ChannelList & channels = inputFile.header().channels();
inputFile.setFrameBuffer (&pixels[0][0] - dw.min.x - dw.min.y * width, 1, width);
inputFile.readPixels (box.min.y, box.max.y);
// Count channels.
uint channelCount= 0;
for (ChannelList::ConstIterator it = channels.begin(); it != channels.end(); ++it)
{
channelCount++;
}
// Allocate FloatImage.
AutoPtr<FloatImage> fimage(new FloatImage());
fimage->allocate(spp, width, height);
fimage->allocate(channelCount, width, height);
for (int y = 0; y < height; y++)
// Describe image's layout with a framebuffer.
FrameBuffer frameBuffer;
uint i = 0;
for (ChannelList::ConstIterator it = channels.begin(); it != channels.end(); ++it, ++i)
{
for (int x = 0; x < width; x++)
{
fimage->setPixel(imagePixel.r, x, y, 0);
fimage->setPixel(imagePixel.g, x, y, 1);
fimage->setPixel(imagePixel.b, x, y, 2);
fimage->setPixel(imagePixel.a, x, y, 3);
}
frameBuffer.insert(it.name(), Slice(FLOAT, fimage->channel(i), sizeof(float), sizeof(float) * width));
}
// Read it.
inputFile.setFrameBuffer (frameBuffer);
inputFile.readPixels (box.min.y, box.max.y);
return fimage.release();
}