FGFS-4.1/OpenSceneGraph
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Added an image negation callback to the render to image. Added commandline docs

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for the new --image and --texture-rectangle options.
This commit is contained in:
Robert Osfield 2005-11-01 19:32:26 +00:00
parent 2584d43393
commit 5319e1d650
1 changed files with 7 additions and 6 deletions
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13
examples/osgprerender/osgprerender.cpp
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@ -119,7 +119,6 @@ struct MyCameraPostDrawCallback : public osg::CameraNode::DrawCallback
{ {
if (_image && _image->getPixelFormat()==GL_RGBA && _image->getDataType()==GL_UNSIGNED_BYTE) if (_image && _image->getPixelFormat()==GL_RGBA && _image->getDataType()==GL_UNSIGNED_BYTE)
{ {
// we'll pick out the center 1/2 of the whole image, // we'll pick out the center 1/2 of the whole image,
int column_start = _image->s()/4; int column_start = _image->s()/4;
int column_end = 3*column_start; int column_end = 3*column_start;
@ -134,9 +133,9 @@ struct MyCameraPostDrawCallback : public osg::CameraNode::DrawCallback
unsigned char* data = _image->data(column_start, r); unsigned char* data = _image->data(column_start, r);
for(int c=column_start; c<column_end; ++c) for(int c=column_start; c<column_end; ++c)
{ {
(*data) = 255; ++data; (*data) = 255-(*data); ++data;
(*data) = (*data); ++data; (*data) = 255-(*data); ++data;
(*data) = (*data); ++data; (*data) = 255-(*data); ++data;
(*data) = 255; ++data; (*data) = 255; ++data;
} }
} }
@ -346,8 +345,10 @@ int main( int argc, char **argv )
arguments.getApplicationUsage()->addCommandLineOption("--fb","Use FrameBuffer for render to texture."); arguments.getApplicationUsage()->addCommandLineOption("--fb","Use FrameBuffer for render to texture.");
arguments.getApplicationUsage()->addCommandLineOption("--pbuffer","Use Pixel Buffer for render to texture, where supported."); arguments.getApplicationUsage()->addCommandLineOption("--pbuffer","Use Pixel Buffer for render to texture, where supported.");
arguments.getApplicationUsage()->addCommandLineOption("--window","Use a seperate Window for render to texture."); arguments.getApplicationUsage()->addCommandLineOption("--window","Use a seperate Window for render to texture.");
arguments.getApplicationUsage()->addCommandLineOption("--width","Set the width of the render to texture"); arguments.getApplicationUsage()->addCommandLineOption("--width","Set the width of the render to texture.");
arguments.getApplicationUsage()->addCommandLineOption("--height","Set the height of the render to texture"); arguments.getApplicationUsage()->addCommandLineOption("--height","Set the height of the render to texture.");
arguments.getApplicationUsage()->addCommandLineOption("--image","Render to an image, then apply a post draw callback to it, and use this image to update a texture.");
arguments.getApplicationUsage()->addCommandLineOption("--texture-rectangle","Use osg::TextureRectangle for doing the render to texure to.");
// construct the viewer. // construct the viewer.
osgProducer::Viewer viewer(arguments); osgProducer::Viewer viewer(arguments);