FGFS-4.1/OpenSceneGraph
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From Wojciech Lewandowski, refactor to FBO setup to use the osg::Camera implicit buffer attachements.

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This commit is contained in:
Robert Osfield
2009-11-19 16:39:03 +00:00
parent 6dc3f54786
commit 519db42c4f
1 changed files with 49 additions and 15 deletions
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64
src/osgUtil/RenderStage.cpp
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@@ -25,9 +25,6 @@
#include <osgUtil/RenderStage>
#define FORCE_COLOR_ATTACHMENT 1
#define FORCE_DEPTH_ATTACHMENT 1
using namespace osg;
using namespace osgUtil;
@@ -349,6 +346,12 @@ void RenderStage::runCameraSetUp(osg::RenderInfo& renderInfo)
unsigned samples = 0;
unsigned colorSamples = 0;
// This is not a cut and paste error. Set BOTH local masks
// to the value of the Camera's use render buffers mask.
// We'll change this if and only if we decide we're doing MSFBO.
unsigned int renderBuffersMask = _camera->getImplicitBufferAttachmentRenderMask(true);
unsigned int resolveBuffersMask = _camera->getImplicitBufferAttachmentRenderMask(true);
if (fbo_ext->isMultisampleSupported())
{
for(osg::Camera::BufferAttachmentMap::iterator itr = bufferAttachments.begin();
@@ -370,9 +373,13 @@ void RenderStage::runCameraSetUp(osg::RenderInfo& renderInfo)
if (samples)
{
fbo_multisample = new osg::FrameBufferObject;
// Use the value of the Camera's use resolve buffers mask as the
// resolve mask.
resolveBuffersMask = _camera->getImplicitBufferAttachmentResolveMask(true);
}
}
for(osg::Camera::BufferAttachmentMap::iterator itr = bufferAttachments.begin();
itr != bufferAttachments.end();
++itr)
@@ -430,33 +437,60 @@ void RenderStage::runCameraSetUp(osg::RenderInfo& renderInfo)
}
#if FORCE_DEPTH_ATTACHMENT
if (!depthAttached)
{
fbo->setAttachment(osg::Camera::DEPTH_BUFFER, osg::FrameBufferAttachment(new osg::RenderBuffer(width, height, GL_DEPTH_COMPONENT24)));
if (fbo_multisample.valid())
{
// If doing MSFBO (and therefore need two FBOs, one for multisampled rendering and one for
// final resolve), then configure "fbo" as the resolve FBO, and When done
// configuring, swap it into "_resolveFbo" (see line 554). But, if not
// using MSFBO, then "fbo" is just the render fbo.
// If using MSFBO, then resolveBuffersMask
// is the value set by the app for the resolve buffers. But if not using
// MSFBO, then resolveBuffersMask is the value set by the app for render
// buffers. In both cases, resolveBuffersMask is used to configure "fbo".
if( resolveBuffersMask & osg::Camera::IMPLICIT_DEPTH_BUFFER_ATTACHMENT )
{
fbo->setAttachment(osg::Camera::DEPTH_BUFFER, osg::FrameBufferAttachment(new osg::RenderBuffer(width, height, GL_DEPTH_COMPONENT24)));
depthAttached = true;
}
if (fbo_multisample.valid() &&
( renderBuffersMask & osg::Camera::IMPLICIT_DEPTH_BUFFER_ATTACHMENT ) )
{
fbo_multisample->setAttachment(osg::Camera::DEPTH_BUFFER,
osg::FrameBufferAttachment(new osg::RenderBuffer(width,
height, GL_DEPTH_COMPONENT24, samples, colorSamples)));
}
depthAttached = true;
}
#endif
if (!stencilAttached)
{
if( resolveBuffersMask & osg::Camera::IMPLICIT_STENCIL_BUFFER_ATTACHMENT )
{
fbo->setAttachment(osg::Camera::STENCIL_BUFFER, osg::FrameBufferAttachment(new osg::RenderBuffer(width, height, GL_STENCIL_INDEX8_EXT)));
stencilAttached = true;
}
if (fbo_multisample.valid() &&
( renderBuffersMask & osg::Camera::IMPLICIT_STENCIL_BUFFER_ATTACHMENT ) )
{
fbo_multisample->setAttachment(osg::Camera::STENCIL_BUFFER,
osg::FrameBufferAttachment(new osg::RenderBuffer(width,
height, GL_STENCIL_INDEX8_EXT, samples, colorSamples)));
}
}
#if FORCE_COLOR_ATTACHMENT
if (!colorAttached)
{
fbo->setAttachment(osg::Camera::COLOR_BUFFER, osg::FrameBufferAttachment(new osg::RenderBuffer(width, height, GL_RGB)));
if (fbo_multisample.valid())
if( resolveBuffersMask & osg::Camera::IMPLICIT_COLOR_BUFFER_ATTACHMENT )
{
fbo->setAttachment(osg::Camera::COLOR_BUFFER, osg::FrameBufferAttachment(new osg::RenderBuffer(width, height, GL_RGB)));
colorAttached = true;
}
if (fbo_multisample.valid() &&
( renderBuffersMask & osg::Camera::IMPLICIT_COLOR_BUFFER_ATTACHMENT ) )
{
fbo_multisample->setAttachment(osg::Camera::COLOR_BUFFER,
osg::FrameBufferAttachment(new osg::RenderBuffer(width,
height, GL_RGB, samples, colorSamples)));
}
colorAttached = true;
}
#endif
fbo->apply(state);