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Diffstat (limited to 'LibOVR/Src/CAPI/GL/CAPI_GL_DistortionRenderer.h')
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1 files changed, 178 insertions, 0 deletions
diff --git a/LibOVR/Src/CAPI/GL/CAPI_GL_DistortionRenderer.h b/LibOVR/Src/CAPI/GL/CAPI_GL_DistortionRenderer.h new file mode 100644 index 0000000..60f1a9f --- /dev/null +++ b/LibOVR/Src/CAPI/GL/CAPI_GL_DistortionRenderer.h @@ -0,0 +1,178 @@ +/************************************************************************************ + +Filename : CAPI_GL_DistortionRenderer.h +Content : Distortion renderer header for GL +Created : November 11, 2013 +Authors : David Borel, Lee Cooper + +Copyright : Copyright 2013 Oculus VR, Inc. All Rights reserved. + +Use of this software is subject to the terms of the Oculus Inc license +agreement provided at the time of installation or download, or which +otherwise accompanies this software in either electronic or hard copy form. + +************************************************************************************/ + +#ifndef OVR_CAPI_GL_DistortionRenderer_h +#define OVR_CAPI_GL_DistortionRenderer_h + +#include "../CAPI_DistortionRenderer.h" + +#include "../../Kernel/OVR_Log.h" +#include "CAPI_GL_Util.h" + +namespace OVR { namespace CAPI { namespace GL { + +// ***** GL::DistortionRenderer + +// Implementation of DistortionRenderer for GL. + +class DistortionRenderer : public CAPI::DistortionRenderer +{ +public: + DistortionRenderer(ovrHmd hmd, + FrameTimeManager& timeManager, + const HMDRenderState& renderState); + ~DistortionRenderer(); + + + // Creation function for the device. + static CAPI::DistortionRenderer* Create(ovrHmd hmd, + FrameTimeManager& timeManager, + const HMDRenderState& renderState); + + + // ***** Public DistortionRenderer interface + + virtual bool Initialize(const ovrRenderAPIConfig* apiConfig, + unsigned distortionCaps); + + virtual void SubmitEye(int eyeId, ovrTexture* eyeTexture); + + virtual void EndFrame(bool swapBuffers, unsigned char* latencyTesterDrawColor, unsigned char* latencyTester2DrawColor); + + void WaitUntilGpuIdle(); + + // Similar to ovr_WaitTillTime but it also flushes GPU. + // Note, it exits when time expires, even if GPU is not in idle state yet. + double FlushGpuAndWaitTillTime(double absTime); + +protected: + + + class GraphicsState : public CAPI::DistortionRenderer::GraphicsState + { + public: + GraphicsState(); + virtual void Save(); + virtual void Restore(); + + protected: + void ApplyBool(GLenum Name, GLint Value); + + public: + GLint GlMajorVersion; + GLint GlMinorVersion; + bool SupportsVao; + + GLint Viewport[4]; + GLfloat ClearColor[4]; + GLint DepthTest; + GLint CullFace; + GLint Program; + GLint ActiveTexture; + GLint TextureBinding; + GLint VertexArray; + GLint FrameBufferBinding; + + GLint Blend; + GLint ColorWritemask[4]; + GLint Dither; + GLint Fog; + GLint Lighting; + GLint RasterizerDiscard; + GLint RenderMode; + GLint SampleMask; + GLint ScissorTest; + GLfloat ZoomX; + GLfloat ZoomY; + }; + + // TBD: Should we be using oe from RState instead? + unsigned DistortionCaps; + + struct FOR_EACH_EYE + { + FOR_EACH_EYE() : TextureSize(0), RenderViewport(Sizei(0)) { } + +#if 0 + IDirect3DVertexBuffer9 * dxVerts; + IDirect3DIndexBuffer9 * dxIndices; +#endif + int numVerts; + int numIndices; + + GLuint texture; + + ovrVector2f UVScaleOffset[2]; + Sizei TextureSize; + Recti RenderViewport; + } eachEye[2]; + + // GL context and utility variables. + RenderParams RParams; + + // Helpers + void initBuffersAndShaders(); + void initShaders(); + void initFullscreenQuad(); + void destroy(); + + void setViewport(const Recti& vp); + + void renderDistortion(Texture* leftEyeTexture, Texture* rightEyeTexture); + + void renderPrimitives(const ShaderFill* fill, Buffer* vertices, Buffer* indices, + int offset, int count, + PrimitiveType rprim, GLuint* vao, bool isDistortionMesh); + + void createDrawQuad(); + void renderLatencyQuad(unsigned char* latencyTesterDrawColor); + void renderLatencyPixel(unsigned char* latencyTesterPixelColor); + + Ptr<Texture> pEyeTextures[2]; + + Ptr<Buffer> DistortionMeshVBs[2]; // one per-eye + Ptr<Buffer> DistortionMeshIBs[2]; // one per-eye + GLuint DistortionMeshVAOs[2]; // one per-eye + + Ptr<ShaderSet> DistortionShader; + + struct StandardUniformData + { + Matrix4f Proj; + Matrix4f View; + } StdUniforms; + + GLuint LatencyVAO; + Ptr<Buffer> LatencyTesterQuadVB; + Ptr<ShaderSet> SimpleQuadShader; + + Ptr<Texture> CurRenderTarget; + Array<Ptr<Texture> > DepthBuffers; + GLuint CurrentFbo; + + GLint SavedViewport[4]; + GLfloat SavedClearColor[4]; + GLint SavedDepthTest; + GLint SavedCullFace; + GLint SavedProgram; + GLint SavedActiveTexture; + GLint SavedBoundTexture; + GLint SavedVertexArray; + GLint SavedBoundFrameBuffer; +}; + +}}} // OVR::CAPI::GL + +#endif // OVR_CAPI_GL_DistortionRenderer_h
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