FGFS-4.1/OpenSceneGraph
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Changed the FrameBufferObject::setAttachment() methods so it now use osg::Camera::BufferComponent

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to enable it to distinguish between MRT and non MRT paths
This commit is contained in:
Robert Osfield 2008-04-18 13:25:14 +00:00
parent f09d583f44
commit 648199cb2b
3 changed files with 71 additions and 38 deletions
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27
include/osg/FrameBufferObject
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@ -295,8 +295,10 @@ namespace osg
class OSG_EXPORT FrameBufferObject: public StateAttribute
{
public:
typedef std::map<GLenum, FrameBufferAttachment> AttachmentMap;
typedef std::map<Camera::BufferComponent, FrameBufferAttachment> AttachmentMap;
typedef std::vector<GLenum> MultipleRenderingTargets;
typedef Camera::BufferComponent BufferComponent;
FrameBufferObject();
FrameBufferObject(const FrameBufferObject& copy, const CopyOp& copyop = CopyOp::SHALLOW_COPY);
@ -304,10 +306,19 @@ namespace osg
META_StateAttribute(osg, FrameBufferObject, (StateAttribute::Type)0x101010/*FrameBufferObject*/);
inline const AttachmentMap& getAttachmentMap() const;
inline bool hasAttachment(GLenum attachment_point) const;
void setAttachment(GLenum attachment_point, const FrameBufferAttachment &attachment);
inline const FrameBufferAttachment& getAttachment(GLenum attachment_point) const;
inline bool hasAttachment(GLenum attachment_point) const;
void setAttachment(BufferComponent attachment_point, const FrameBufferAttachment &attachment);
inline const FrameBufferAttachment& getAttachment(BufferComponent attachment_point) const;
inline bool hasAttachment(BufferComponent attachment_point) const;
GLenum convertBufferComponentToGLenum(BufferComponent attachment_point) const;
BufferComponent convertGLenumToBufferComponent(GLenum attachment_point) const;
inline bool hasMultipleRenderingTargets() const { return !_drawBuffers.empty(); }
inline const MultipleRenderingTargets& getMultipleRenderingTargets() const { return _drawBuffers; }
@ -333,6 +344,8 @@ namespace osg
virtual ~FrameBufferObject();
FrameBufferObject& operator = (const FrameBufferObject&) { return *this; }
void updateDrawBuffers();
inline void dirtyAll();
private:
@ -355,11 +368,21 @@ namespace osg
}
inline bool FrameBufferObject::hasAttachment(GLenum attachment_point) const
{
return hasAttachment(convertGLenumToBufferComponent(attachment_point));
}
inline bool FrameBufferObject::hasAttachment(FrameBufferObject::BufferComponent attachment_point) const
{
return _attachments.find(attachment_point) != _attachments.end();
}
inline const FrameBufferAttachment &FrameBufferObject::getAttachment(GLenum attachment_point) const
{
return getAttachment(convertGLenumToBufferComponent(attachment_point));
}
inline const FrameBufferAttachment &FrameBufferObject::getAttachment(FrameBufferObject::BufferComponent attachment_point) const
{
return _attachments.find(attachment_point)->second;
}

44
src/osg/FrameBufferObject.cpp
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@ -571,8 +571,43 @@ FrameBufferObject::~FrameBufferObject()
void FrameBufferObject::setAttachment(GLenum attachment_point, const FrameBufferAttachment &attachment)
{
setAttachment(convertGLenumToBufferComponent(attachment_point),attachment);
}
void FrameBufferObject::setAttachment(BufferComponent attachment_point, const FrameBufferAttachment &attachment)
{
GLenum gl_attachment = convertBufferComponentToGLenum(attachment_point);
_attachments[attachment_point] = attachment;
updateDrawBuffers();
dirtyAll();
}
GLenum FrameBufferObject::convertBufferComponentToGLenum(BufferComponent attachment_point) const
{
switch(attachment_point)
{
case(Camera::DEPTH_BUFFER): return GL_DEPTH_ATTACHMENT_EXT;
case(Camera::STENCIL_BUFFER): return GL_STENCIL_ATTACHMENT_EXT;
case(Camera::COLOR_BUFFER): return GL_COLOR_ATTACHMENT0_EXT;
default: return GLenum(GL_COLOR_ATTACHMENT0_EXT + (attachment_point-Camera::COLOR_BUFFER0));
}
}
FrameBufferObject::BufferComponent FrameBufferObject::convertGLenumToBufferComponent(GLenum attachment_point) const
{
switch(attachment_point)
{
case(GL_DEPTH_ATTACHMENT_EXT): return Camera::DEPTH_BUFFER;
case(GL_STENCIL_ATTACHMENT_EXT): return Camera::STENCIL_BUFFER;
case(GL_COLOR_ATTACHMENT0_EXT): return Camera::COLOR_BUFFER;
default: return BufferComponent(Camera::COLOR_BUFFER0+(attachment_point-GL_COLOR_ATTACHMENT0_EXT));
}
}
void FrameBufferObject::updateDrawBuffers()
{
_drawBuffers.clear();
// create textures and mipmaps before we bind the frame buffer object
@ -581,12 +616,9 @@ void FrameBufferObject::setAttachment(GLenum attachment_point, const FrameBuffer
const FrameBufferAttachment &fa = i->second;
// setup draw buffers based on the attachment definition
if (i->first >= GL_COLOR_ATTACHMENT0_EXT && i->first <= GL_COLOR_ATTACHMENT15_EXT)
_drawBuffers.push_back(i->first);
if (i->first >= Camera::COLOR_BUFFER0 && i->first <= Camera::COLOR_BUFFER15)
_drawBuffers.push_back(convertBufferComponentToGLenum(i->first));
}
dirtyAll();
}
void FrameBufferObject::apply(State &state) const
@ -663,7 +695,7 @@ void FrameBufferObject::apply(State &state) const
for (AttachmentMap::const_iterator i=_attachments.begin(); i!=_attachments.end(); ++i)
{
const FrameBufferAttachment &fa = i->second;
fa.attach(state, i->first, ext);
fa.attach(state, convertBufferComponentToGLenum(i->first), ext);
}
dirtyAttachmentList = 0;
}

38
src/osgUtil/RenderStage.cpp
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@ -340,43 +340,21 @@ void RenderStage::runCameraSetUp(osg::RenderInfo& renderInfo)
osg::Camera::BufferComponent buffer = itr->first;
osg::Camera::Attachment& attachment = itr->second;
switch(buffer)
{
case(osg::Camera::DEPTH_BUFFER):
{
fbo->setAttachment(GL_DEPTH_ATTACHMENT_EXT, osg::FrameBufferAttachment(attachment));
depthAttached = true;
break;
}
case(osg::Camera::STENCIL_BUFFER):
{
fbo->setAttachment(GL_STENCIL_ATTACHMENT_EXT, osg::FrameBufferAttachment(attachment));
stencilAttached = true;
break;
}
case(osg::Camera::COLOR_BUFFER):
{
fbo->setAttachment(GL_COLOR_ATTACHMENT0_EXT, osg::FrameBufferAttachment(attachment));
colorAttached = true;
break;
}
default:
{
fbo->setAttachment(GL_COLOR_ATTACHMENT0_EXT+(buffer-osg::Camera::COLOR_BUFFER0), osg::FrameBufferAttachment(attachment));
colorAttached = true;
break;
}
}
fbo->setAttachment(buffer, osg::FrameBufferAttachment(attachment));
if (buffer==osg::Camera::DEPTH_BUFFER) depthAttached = true;
else if (buffer==osg::Camera::STENCIL_BUFFER) stencilAttached = true;
else if (buffer>osg::Camera::COLOR_BUFFER) colorAttached = true;
}
if (!depthAttached)
{
fbo->setAttachment(GL_DEPTH_ATTACHMENT_EXT, osg::FrameBufferAttachment(new osg::RenderBuffer(width, height, GL_DEPTH_COMPONENT24)));
fbo->setAttachment(osg::Camera::DEPTH_BUFFER, osg::FrameBufferAttachment(new osg::RenderBuffer(width, height, GL_DEPTH_COMPONENT24)));
}
if (!colorAttached)
{
fbo->setAttachment(GL_COLOR_ATTACHMENT0_EXT, osg::FrameBufferAttachment(new osg::RenderBuffer(width, height, GL_RGB)));
fbo->setAttachment(osg::Camera::COLOR_BUFFER, osg::FrameBufferAttachment(new osg::RenderBuffer(width, height, GL_RGB)));
}
fbo->apply(state);
@ -385,7 +363,7 @@ void RenderStage::runCameraSetUp(osg::RenderInfo& renderInfo)
if (status != GL_FRAMEBUFFER_COMPLETE_EXT)
{
osg::notify(osg::INFO)<<"RenderStage::runCameraSetUp(), FBO setup failed, FBO status= 0x"<<std::hex<<status<<std::endl;
osg::notify(osg::NOTICE)<<"RenderStage::runCameraSetUp(), FBO setup failed, FBO status= 0x"<<std::hex<<status<<std::endl;
fbo_supported = false;
fbo_ext->glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);