Nick,
Pretty sure you can only attach one texture to a FRAME_BUFFER render
target. And in that case, it is just copying the framebuffer to your
texture after rendering it. Consider using a FRAME_BUFFER_OBJECT instead.
On Monday, March 29, 2021 at 10:45:27 PM UTC-4 trajce.ni...@gmail.com wrote:
> Nonone on this? Robert?
>
> Thank you
> Nick
>
> On Sun, Mar 28, 2021 at 5:24 PM Trajce Nikolov NICK <
> trajce.ni...@gmail.com> wrote:
>
>> Attached is the minimal code that reproduce the problem
>>
>> Thanks a bunch as always!
>>
>> Nick
>>
>> On Sun, Mar 28, 2021 at 2:49 PM Trajce Nikolov NICK <
>> trajce.ni...@gmail.com> wrote:
>>
>>> Hi Community,
>>>
>>> I am attaching to the main camera DepthBuffer and ColorBuffer as
>>> Texture2D - attached is the setup. I also have shader to check the depth
>>> buffer - so it is ok as on the image. And I am displaying it on a quad. The
>>> depth buffer is still getting me zeros when the colorbuffer is attached,
>>> otherwise when it is not, then it works as it should.
>>>
>>> Any hints?
>>>
>>> mOsgExternalDepth = new osg::Texture2D;
>>> mOsgExternalDepth->setSourceFormat(GL_DEPTH_COMPONENT);
>>> mOsgExternalDepth->setSourceType(GL_FLOAT);
>>> mOsgExternalDepth->setInternalFormat(GL_DEPTH_COMPONENT32F);
>>> mOsgExternalDepth->setTextureWidth(screenWidth);
>>> mOsgExternalDepth->setTextureHeight(screenHeight);
>>> mOsgExternalDepth->setResizeNonPowerOfTwoHint(false);\
>>>
>>> mOsgExternalColor = new osg::Texture2D;
>>> mOsgExternalColor->setInternalFormat(GL_RGBA16F_ARB);
>>> mOsgExternalColor->setSourceFormat(GL_RGBA);
>>> mOsgExternalColor->setSourceType(GL_FLOAT);
>>> mOsgExternalColor->setTextureWidth(screenWidth);
>>> mOsgExternalColor->setTextureHeight(screenHeight);
>>> mOsgExternalColor->setResizeNonPowerOfTwoHint(false);
>>>
>>> mainCamera->attach(osg::Camera::COLOR_BUFFER,
>>> (osg::Texture*)mOsgExternalColor);
>>> mainCamera->attach(osg::Camera::DEPTH_BUFFER,
>>> (osg::Texture*)mOsgExternalDepth);
>>>
>>> osg::ref_ptr camera = new osg::Camera;
>>> camera->setProjectionMatrix(osg::Matrixd::ortho2D(0, screenWidth, 0,
>>> screenHeight));
>>> camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
>>> camera->setViewMatrix(osg::Matrixd::identity());
>>> camera->setClearMask(0);
>>> camera->setRenderOrder(osg::Camera::POST_RENDER);
>>> camera->setAllowEventFocus(false);
>>>
>>>
>>> context.getImageGenerator()->getViewer()->getView(0)->getSceneData()->asGroup()->addChild(camera);
>>>
>>>
>>> osg::ref_ptr quad =
>>> osg::createTexturedQuadGeometry(osg::Vec3(0, 0, 0),
>>> osg::Vec3(screenWidth/2, 0, 0), osg::Vec3(0, screenHeight/2, 0));
>>> quad->getOrCreateStateSet()->setMode(GL_LIGHTING,
>>> osg::StateAttribute::OFF);
>>> quad->getOrCreateStateSet()->setTextureAttributeAndModes(0,
>>> mOsgExternalDepth);
>>>
>>> const std::string vertShader = ""\
>>> "void main() "\
>>> "{ "\
>>> " gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; "\
>>> " gl_TexCoord[0] = gl_TextureMatrix[0] *gl_MultiTexCoord0;"\
>>> "}";
>>>
>>> const std::string fragShader = ""\
>>> "uniform sampler2D texture0; "\
>>> "void main() "\
>>> "{ "\
>>> " float d = texture2D( texture0, gl_TexCoord[0].xy ).x; "\
>>> " gl_FragColor = vec4(d, d, d, 1); "\
>>> "}";
>>>
>>> osg::ref_ptr vert = new osg::Shader(osg::Shader::VERTEX,
>>> vertShader);
>>> osg::ref_ptr frag = new osg::Shader(osg::Shader::FRAGMENT,
>>> fragShader);
>>>
>>> osg::ref_ptr program = new osg::Program;
>>> program->addShader(vert);
>>> program->addShader(frag);
>>>
>>> quad->getOrCreateStateSet()->setAttributeAndModes(program);
>>> quad->getOrCreateStateSet()->addUniform(new
>>> osg::Uniform(osg::Uniform::SAMPLER_2D, "texture0", 0));
>>> osg::ref_ptr quadColor =
>>> osg::createTexturedQuadGeometry(osg::Vec3(screenWidth / 2, 0, 0),
>>> osg::Vec3(screenWidth/2 , 0, 0), osg::Vec3(0, screenHeight/2, 0));
>>> quadColor->getOrCreateStateSet()->setMode(GL_LIGHTING,
>>> osg::StateAttribute::OFF);
>>> quadColor->getOrCreateStateSet()->setTextureAttributeAndModes(0,
>>> mOsgExternalColor);
>>>
>>> camera->addChild(quadColor);
>>> camera->addChild(quad);
>>>
>>> --
>>> trajce nikolov nick
>>>
>>
>>
>> --
>> trajce nikolov nick
>>
>
>
> --
> trajce nikolov nick
>
--
You received this message because you are subscribed to the Google Groups
"OpenSceneGraph Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to osg-users+unsubscr...@googlegroups.com.
To view this discussion on the web visit
https://groups.google.com/d/msgid/osg-users/64c1877d-50c2-4fad-801d-41cd63529376n%40googlegroups.com.
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
