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From Brad Colbert/Robert Osfield: added s/getSourceFormat and s/getSourceType to osg::Texture

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along with support for this Texture1D, 2D, 3D, TextureCubeMap and TextureRectangle.  The
new SourceFormat and SourceType parameters are only used when no osg::Image is assigned to
an osg::Texture, and main use is for render to texture effects.

Added support for --hdr option in osgprerender, which utilises the new Texture::setSourceFormat/Type() methods.
This commit is contained in:
Robert Osfield
2005-11-08 15:52:21 +00:00
parent 8922bde081
commit 53e075f78b
8 changed files with 114 additions and 10 deletions
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45
examples/osgprerender/osgprerender.cpp
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@@ -145,14 +145,40 @@ struct MyCameraPostDrawCallback : public osg::CameraNode::DrawCallback
// using the image can be informed that they need to update.
_image->dirty();
}
else if (_image && _image->getPixelFormat()==GL_RGBA && _image->getDataType()==GL_FLOAT)
{
// we'll pick out the center 1/2 of the whole image,
int column_start = _image->s()/4;
int column_end = 3*column_start;
int row_start = _image->t()/4;
int row_end = 3*row_start;
// and then invert these pixels
for(int r=row_start; r<row_end; ++r)
{
float* data = (float*)_image->data(column_start, r);
for(int c=column_start; c<column_end; ++c)
{
(*data) = 1.0f-(*data); ++data;
(*data) = 1.0f-(*data); ++data;
(*data) = 1.0f-(*data); ++data;
(*data) = 1.0f; ++data;
}
}
// dirty the image (increments the modified count) so that any textures
// using the image can be informed that they need to update.
_image->dirty();
}
}
osg::Image* _image;
};
osg::Node* createPreRenderSubGraph(osg::Node* subgraph, unsigned tex_width, unsigned tex_height, osg::CameraNode::RenderTargetImplementation renderImplementation, bool useImage, bool useTextureRectangle)
osg::Node* createPreRenderSubGraph(osg::Node* subgraph, unsigned tex_width, unsigned tex_height, osg::CameraNode::RenderTargetImplementation renderImplementation, bool useImage, bool useTextureRectangle, bool useHDR)
{
if (!subgraph) return 0;
@@ -182,6 +208,13 @@ osg::Node* createPreRenderSubGraph(osg::Node* subgraph, unsigned tex_width, unsi
texture = texture2D;
}
if (useHDR)
{
texture->setInternalFormat(GL_RGBA16F_ARB);
texture->setSourceFormat(GL_RGBA);
texture->setSourceType(GL_FLOAT);
}
// first create the geometry of the flag of which to view.
{
// create the to visualize.
@@ -298,7 +331,8 @@ osg::Node* createPreRenderSubGraph(osg::Node* subgraph, unsigned tex_width, unsi
if (useImage)
{
osg::Image* image = new osg::Image;
image->allocateImage(tex_width, tex_height, 1, GL_RGBA, GL_UNSIGNED_BYTE);
//image->allocateImage(tex_width, tex_height, 1, GL_RGBA, GL_UNSIGNED_BYTE);
image->allocateImage(tex_width, tex_height, 1, GL_RGBA, GL_FLOAT);
// attach the image so its copied on each frame.
camera->attach(osg::CameraNode::COLOR_BUFFER, image);
@@ -385,6 +419,8 @@ int main( int argc, char **argv )
bool useTextureRectangle = false;
while (arguments.read("--texture-rectangle")) { useTextureRectangle = true; }
bool useHDR = false;
while (arguments.read("--hdr")) { useHDR = true; }
// any option left unread are converted into errors to write out later.
arguments.reportRemainingOptionsAsUnrecognized();
@@ -418,7 +454,7 @@ int main( int argc, char **argv )
loadedModelTransform->setUpdateCallback(nc);
osg::Group* rootNode = new osg::Group();
rootNode->addChild(createPreRenderSubGraph(loadedModelTransform,tex_width,tex_height, renderImplementation, useImage, useTextureRectangle));
rootNode->addChild(createPreRenderSubGraph(loadedModelTransform,tex_width,tex_height, renderImplementation, useImage, useTextureRectangle, useHDR));
// add model to the viewer.
@@ -447,3 +483,4 @@ int main( int argc, char **argv )
return 0;
}