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70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
#ifndef MWVR_OPENRXTEXTURE_H
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#define MWVR_OPENRXTEXTURE_H
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#include <memory>
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#include <osg/Group>
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#include <osg/Camera>
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#include <osgViewer/Viewer>
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#include "openxrmanager.hpp"
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namespace MWVR
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{
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/// \brief Manages an opengl framebuffer
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///
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/// Intended for managing the vr swapchain, but is also use to manage the mirror texture as a convenience.
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class VRFramebuffer
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{
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private:
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struct Texture
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{
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uint32_t mImage = 0;
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bool mOwner = false;
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void delet();
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void setTexture(uint32_t image, bool owner);
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};
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public:
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VRFramebuffer(osg::ref_ptr<osg::State> state, std::size_t width, std::size_t height, uint32_t msaaSamples);
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~VRFramebuffer();
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void destroy(osg::State* state);
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auto width() const { return mWidth; }
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auto height() const { return mHeight; }
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auto msaaSamples() const { return mSamples; }
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void bindFramebuffer(osg::GraphicsContext* gc, uint32_t target);
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void setColorBuffer(osg::GraphicsContext* gc, uint32_t colorBuffer, bool takeOwnership);
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void setDepthBuffer(osg::GraphicsContext* gc, uint32_t depthBuffer, bool takeOwnership);
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void createColorBuffer(osg::GraphicsContext* gc);
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void createDepthBuffer(osg::GraphicsContext* gc);
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//! ref glBlitFramebuffer
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void blit(osg::GraphicsContext* gc, int srcX0, int srcY0, int srcX1, int srcY1, int dstX0, int dstY0, int dstX1, int dstY1, uint32_t bits, uint32_t filter = GL_LINEAR);
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uint32_t colorBuffer() const { return mColorBuffer.mImage; };
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uint32_t depthBuffer() const { return mDepthBuffer.mImage; };
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private:
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uint32_t createImage(osg::GraphicsContext* gc, uint32_t formatInternal, uint32_t format);
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// Set aside a weak pointer to the constructor state to use when freeing FBOs, if no state is given to destroy()
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osg::observer_ptr<osg::State> mState;
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// Metadata
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std::size_t mWidth = 0;
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std::size_t mHeight = 0;
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// Render Target
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uint32_t mFBO = 0;
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Texture mDepthBuffer;
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Texture mColorBuffer;
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uint32_t mSamples = 0;
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uint32_t mTextureTarget = 0;
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};
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}
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#endif
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