FGFS-4.1/OpenSceneGraph
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From Frederic Bouvier, "here is my proposal. It is supposed to be used like this :

Browse Source 
osg::Camera* c = createCamera();
   c->attach( osg::Camera::COLOR_BUFFER0, texture3d, 0,
osg::Camera::FACE_CONTROLLED_BY_GEOMETRY_SHADER );

it works also for cubemap textures and 2d texture arrays
"
This commit is contained in:
Robert Osfield
2010-06-01 14:12:03 +00:00
parent 4a047f2a82
commit 656a1b6da5
4 changed files with 21 additions and 3 deletions
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18
src/osg/FrameBufferObject.cpp
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@@ -55,6 +55,7 @@ FBOExtensions::FBOExtensions(unsigned int contextID)
glFramebufferTexture1D(0),
glFramebufferTexture2D(0),
glFramebufferTexture3D(0),
glFramebufferTexture(0),
glFramebufferTextureLayer(0),
glFramebufferRenderbuffer(0),
glGenerateMipmap(0),
@@ -73,6 +74,7 @@ FBOExtensions::FBOExtensions(unsigned int contextID)
LOAD_FBO_EXT(glFramebufferTexture1D);
LOAD_FBO_EXT(glFramebufferTexture2D);
LOAD_FBO_EXT(glFramebufferTexture3D);
LOAD_FBO_EXT(glFramebufferTexture);
LOAD_FBO_EXT(glFramebufferTextureLayer);
LOAD_FBO_EXT(glFramebufferRenderbuffer);
LOAD_FBO_EXT(glGenerateMipmap);
@@ -90,6 +92,7 @@ FBOExtensions::FBOExtensions(unsigned int contextID)
glFramebufferTexture1D != 0 &&
glFramebufferTexture2D != 0 &&
glFramebufferTexture3D != 0 &&
glFramebufferTexture != 0 &&
glFramebufferRenderbuffer != 0 &&
glGenerateMipmap != 0 &&
glGetRenderbufferParameteriv != 0;
@@ -554,16 +557,25 @@ void FrameBufferAttachment::attach(State &state, GLenum target, GLenum attachmen
ext->glFramebufferTexture2D(target, attachment_point, GL_TEXTURE_2D_MULTISAMPLE, tobj->id(), _ximpl->level);
break;
case Pimpl::TEXTURE3D:
ext->glFramebufferTexture3D(target, attachment_point, GL_TEXTURE_3D, tobj->id(), _ximpl->level, _ximpl->zoffset);
if (_ximpl->zoffset == Camera::FACE_CONTROLLED_BY_GEOMETRY_SHADER)
ext->glFramebufferTexture(target, attachment_point, tobj->id(), _ximpl->level);
else
ext->glFramebufferTexture3D(target, attachment_point, GL_TEXTURE_3D, tobj->id(), _ximpl->level, _ximpl->zoffset);
break;
case Pimpl::TEXTURE2DARRAY:
ext->glFramebufferTextureLayer(target, attachment_point, tobj->id(), _ximpl->level, _ximpl->zoffset);
if (_ximpl->zoffset == Camera::FACE_CONTROLLED_BY_GEOMETRY_SHADER)
ext->glFramebufferTexture(target, attachment_point, tobj->id(), _ximpl->level);
else
ext->glFramebufferTextureLayer(target, attachment_point, tobj->id(), _ximpl->level, _ximpl->zoffset);
break;
case Pimpl::TEXTURERECT:
ext->glFramebufferTexture2D(target, attachment_point, GL_TEXTURE_RECTANGLE, tobj->id(), 0);
break;
case Pimpl::TEXTURECUBE:
ext->glFramebufferTexture2D(target, attachment_point, GL_TEXTURE_CUBE_MAP_POSITIVE_X + _ximpl->cubeMapFace, tobj->id(), _ximpl->level);
if (_ximpl->cubeMapFace == Camera::FACE_CONTROLLED_BY_GEOMETRY_SHADER)
ext->glFramebufferTexture(target, attachment_point, tobj->id(), _ximpl->level);
else
ext->glFramebufferTexture2D(target, attachment_point, GL_TEXTURE_CUBE_MAP_POSITIVE_X + _ximpl->cubeMapFace, tobj->id(), _ximpl->level);
break;
}
}