FGFS-4.1/OpenSceneGraph
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From J.P Delport, "I changed the default HDR mode to the ARB format and put in comments for some other possible modes.

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Some other comment cleanups too."
This commit is contained in:
Robert Osfield
2008-12-17 17:23:17 +00:00
parent 288e1853b9
commit f8151127e3
1 changed files with 14 additions and 6 deletions
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20
examples/osgmultiplerendertargets/osgmultiplerendertargets.cpp
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@@ -36,7 +36,7 @@
#include <stdio.h>
//
// Below is relatively straight forward example of use OpenGL multiple render targets extension
// Below is relatively straight forward example of using the OpenGL multiple render targets (MRT) extension
// to FrameBufferObjects/GLSL shaders.
//
// Another, more sophisticated MRT example can be found in the osgstereomatch example.
@@ -213,8 +213,16 @@ osg::Node* createScene(osg::Node* cam_subgraph, unsigned int tex_width, unsigned
if (useHDR)
{
textureRect[i]->setInternalFormat(GL_FLOAT_RGBA32_NV);
//textureRect[i]->setInternalFormat(GL_FLOAT_RGBA16_NV);
// Default HDR format
textureRect[i]->setInternalFormat(GL_RGBA32F_ARB);
// GL_FLOAT_RGBA32_NV might be supported on pre 8-series GPUs
//textureRect[i]->setInternalFormat(GL_FLOAT_RGBA32_NV);
// GL_RGBA16F_ARB can be used with this example,
// but modify e-12 and e12 in the shaders accordingly
//textureRect[i]->setInternalFormat(GL_RGBA16F_ARB);
textureRect[i]->setSourceFormat(GL_RGBA);
textureRect[i]->setSourceType(GL_FLOAT);
}
@@ -379,13 +387,13 @@ int main( int argc, char **argv )
osg::ArgumentParser arguments(&argc,argv);
// set up the usage document, in case we need to print out how to use this program.
arguments.getApplicationUsage()->setDescription(arguments.getApplicationName() + " demonstrates the use of multiple render targets (MRT) using frame buffer objects. A render to texture camera is used to render to four textures using a single shader. The four textures are then combined to texture the viewed geometry.");
arguments.getApplicationUsage()->setDescription(arguments.getApplicationName() + " demonstrates the use of multiple render targets (MRT) with frame buffer objects (FBOs). A render to texture (RTT) camera is used to render to four textures using a single shader. The four textures are then combined to texture the viewed geometry.");
arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] ...");
arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information.");
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("--image","Render one of the targets to an image, then apply a post draw callback to modify it, and use this image to update a texture.");
arguments.getApplicationUsage()->addCommandLineOption("--hdr","Use high dynamic range. Create floating point textures to render to.");
arguments.getApplicationUsage()->addCommandLineOption("--image","Render one of the targets to an image, then apply a post draw callback to modify it and use this image to update the final texture. Print some texture values when using HDR.");
arguments.getApplicationUsage()->addCommandLineOption("--hdr","Use high dynamic range (HDR). Create floating point textures to render to.");
// construct the viewer.
osgViewer::Viewer viewer(arguments);