kc3-lang/angle/src/libANGLE/renderer/gl/StateManagerGL.h

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• Hash : 7d64c486
  Author :
  Date : 2019-03-12T14:27:40
  

  GL_ANGLE_multiview has been renamed to GL_OVR_multiview2.
  
  changes include:
  1) GL_OVR_multiview to GL_OVR_multiview2 extension directive change
  2) Removal of all references to side by side. We no longer support multiple views in a single 2DTexture. Only 2DTextureArray's are supported
  3) WebGL 2 (ES3) is required for multiview
  
  Bug: angleproject:3341
  Change-Id: Ie0c1d21d7610f8feebdb2e4d01c6947f57e69328
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1552023
  Commit-Queue: Rafael Cintron <rafael.cintron@microsoft.com>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/renderer/gl/StateManagerGL.h

• //
  // Copyright (c) 2015 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  // StateManagerGL.h: Defines a class for caching applied OpenGL state
  
  #ifndef LIBANGLE_RENDERER_GL_STATEMANAGERGL_H_
  #define LIBANGLE_RENDERER_GL_STATEMANAGERGL_H_
  
  #include "common/debug.h"
  #include "libANGLE/Error.h"
  #include "libANGLE/State.h"
  #include "libANGLE/angletypes.h"
  #include "libANGLE/renderer/gl/functionsgl_typedefs.h"
  
  #include <map>
  
  namespace gl
  {
  struct Caps;
  class FramebufferState;
  class State;
  }  // namespace gl
  
  namespace rx
  {
  
  class FramebufferGL;
  class FunctionsGL;
  class TransformFeedbackGL;
  class VertexArrayGL;
  class QueryGL;
  
  class StateManagerGL final : angle::NonCopyable
  {
    public:
      StateManagerGL(const FunctionsGL *functions,
                     const gl::Caps &rendererCaps,
                     const gl::Extensions &extensions);
      ~StateManagerGL();
  
      void deleteProgram(GLuint program);
      void deleteVertexArray(GLuint vao);
      void deleteTexture(GLuint texture);
      void deleteSampler(GLuint sampler);
      void deleteBuffer(GLuint buffer);
      void deleteFramebuffer(GLuint fbo);
      void deleteRenderbuffer(GLuint rbo);
      void deleteTransformFeedback(GLuint transformFeedback);
  
      void useProgram(GLuint program);
      void forceUseProgram(GLuint program);
      void bindVertexArray(GLuint vao, GLuint elementArrayBuffer);
      void bindBuffer(gl::BufferBinding target, GLuint buffer);
      void bindBufferBase(gl::BufferBinding target, size_t index, GLuint buffer);
      void bindBufferRange(gl::BufferBinding target,
                           size_t index,
                           GLuint buffer,
                           size_t offset,
                           size_t size);
      void activeTexture(size_t unit);
      void bindTexture(gl::TextureType type, GLuint texture);
      void bindSampler(size_t unit, GLuint sampler);
      void bindImageTexture(size_t unit,
                            GLuint texture,
                            GLint level,
                            GLboolean layered,
                            GLint layer,
                            GLenum access,
                            GLenum format);
      void bindFramebuffer(GLenum type, GLuint framebuffer);
      void bindRenderbuffer(GLenum type, GLuint renderbuffer);
      void bindTransformFeedback(GLenum type, GLuint transformFeedback);
      void onTransformFeedbackStateChange();
      void beginQuery(gl::QueryType type, QueryGL *queryObject, GLuint queryId);
      void endQuery(gl::QueryType type, QueryGL *queryObject, GLuint queryId);
  
      void setAttributeCurrentData(size_t index, const gl::VertexAttribCurrentValueData &data);
  
      void setScissorTestEnabled(bool enabled);
      void setScissor(const gl::Rectangle &scissor);
  
      void setViewport(const gl::Rectangle &viewport);
      void setDepthRange(float near, float far);
  
      void setBlendEnabled(bool enabled);
      void setBlendColor(const gl::ColorF &blendColor);
      void setBlendFuncs(GLenum sourceBlendRGB,
                         GLenum destBlendRGB,
                         GLenum sourceBlendAlpha,
                         GLenum destBlendAlpha);
      void setBlendEquations(GLenum blendEquationRGB, GLenum blendEquationAlpha);
      void setColorMask(bool red, bool green, bool blue, bool alpha);
      void setSampleAlphaToCoverageEnabled(bool enabled);
      void setSampleCoverageEnabled(bool enabled);
      void setSampleCoverage(float value, bool invert);
      void setSampleMaskEnabled(bool enabled);
      void setSampleMaski(GLuint maskNumber, GLbitfield mask);
  
      void setDepthTestEnabled(bool enabled);
      void setDepthFunc(GLenum depthFunc);
      void setDepthMask(bool mask);
      void setStencilTestEnabled(bool enabled);
      void setStencilFrontWritemask(GLuint mask);
      void setStencilBackWritemask(GLuint mask);
      void setStencilFrontFuncs(GLenum func, GLint ref, GLuint mask);
      void setStencilBackFuncs(GLenum func, GLint ref, GLuint mask);
      void setStencilFrontOps(GLenum sfail, GLenum dpfail, GLenum dppass);
      void setStencilBackOps(GLenum sfail, GLenum dpfail, GLenum dppass);
  
      void setCullFaceEnabled(bool enabled);
      void setCullFace(gl::CullFaceMode cullFace);
      void setFrontFace(GLenum frontFace);
      void setPolygonOffsetFillEnabled(bool enabled);
      void setPolygonOffset(float factor, float units);
      void setRasterizerDiscardEnabled(bool enabled);
      void setLineWidth(float width);
  
      void setPrimitiveRestartEnabled(bool enabled);
  
      void setClearColor(const gl::ColorF &clearColor);
      void setClearDepth(float clearDepth);
      void setClearStencil(GLint clearStencil);
  
      void setPixelUnpackState(const gl::PixelUnpackState &unpack);
      void setPixelUnpackBuffer(const gl::Buffer *pixelBuffer);
      void setPixelPackState(const gl::PixelPackState &pack);
      void setPixelPackBuffer(const gl::Buffer *pixelBuffer);
  
      void setFramebufferSRGBEnabled(const gl::Context *context, bool enabled);
      void setFramebufferSRGBEnabledForFramebuffer(const gl::Context *context,
                                                   bool enabled,
                                                   const FramebufferGL *framebuffer);
  
      void setDitherEnabled(bool enabled);
  
      void setMultisamplingStateEnabled(bool enabled);
      void setSampleAlphaToOneStateEnabled(bool enabled);
  
      void setCoverageModulation(GLenum components);
  
      void setPathRenderingModelViewMatrix(const GLfloat *m);
      void setPathRenderingProjectionMatrix(const GLfloat *m);
      void setPathRenderingStencilState(GLenum func, GLint ref, GLuint mask);
  
      void setProvokingVertex(GLenum mode);
  
      void pauseTransformFeedback();
      angle::Result pauseAllQueries(const gl::Context *context);
      angle::Result pauseQuery(const gl::Context *context, gl::QueryType type);
      angle::Result resumeAllQueries(const gl::Context *context);
      angle::Result resumeQuery(const gl::Context *context, gl::QueryType type);
      angle::Result onMakeCurrent(const gl::Context *context);
  
      void syncState(const gl::Context *context,
                     const gl::State::DirtyBits &glDirtyBits,
                     const gl::State::DirtyBits &bitMask);
  
      ANGLE_INLINE void updateMultiviewBaseViewLayerIndexUniform(
          const gl::Program *program,
          const gl::FramebufferState &drawFramebufferState) const
      {
          if (mIsMultiviewEnabled && program && program->usesMultiview())
          {
              updateMultiviewBaseViewLayerIndexUniformImpl(program, drawFramebufferState);
          }
      }
  
      GLuint getProgramID() const { return mProgram; }
      GLuint getVertexArrayID() const { return mVAO; }
      GLuint getFramebufferID(angle::FramebufferBinding binding) const
      {
          return mFramebuffers[binding];
      }
  
    private:
      void setTextureCubemapSeamlessEnabled(bool enabled);
  
      void propagateProgramToVAO(const gl::Program *program, VertexArrayGL *vao);
  
      void updateProgramTextureBindings(const gl::Context *context);
      void updateProgramStorageBufferBindings(const gl::Context *context);
      void updateProgramUniformBufferBindings(const gl::Context *context);
      void updateProgramAtomicCounterBufferBindings(const gl::Context *context);
      void updateProgramImageBindings(const gl::Context *context);
  
      void updateDispatchIndirectBufferBinding(const gl::Context *context);
      void updateDrawIndirectBufferBinding(const gl::Context *context);
  
      void syncSamplersState(const gl::Context *context);
      void syncTransformFeedbackState(const gl::Context *context);
  
      void updateMultiviewBaseViewLayerIndexUniformImpl(
          const gl::Program *program,
          const gl::FramebufferState &drawFramebufferState) const;
  
      const FunctionsGL *mFunctions;
  
      GLuint mProgram;
  
      GLuint mVAO;
      std::vector<gl::VertexAttribCurrentValueData> mVertexAttribCurrentValues;
  
      angle::PackedEnumMap<gl::BufferBinding, GLuint> mBuffers;
  
      struct IndexedBufferBinding
      {
          IndexedBufferBinding();
  
          size_t offset;
          size_t size;
          GLuint buffer;
      };
      angle::PackedEnumMap<gl::BufferBinding, std::vector<IndexedBufferBinding>> mIndexedBuffers;
  
      size_t mTextureUnitIndex;
      angle::PackedEnumMap<gl::TextureType, gl::ActiveTextureArray<GLuint>> mTextures;
      gl::ActiveTextureArray<GLuint> mSamplers;
  
      struct ImageUnitBinding
      {
          ImageUnitBinding()
              : texture(0), level(0), layered(false), layer(0), access(GL_READ_ONLY), format(GL_R32UI)
          {}
  
          GLuint texture;
          GLint level;
          GLboolean layered;
          GLint layer;
          GLenum access;
          GLenum format;
      };
      std::vector<ImageUnitBinding> mImages;
  
      GLuint mTransformFeedback;
      TransformFeedbackGL *mCurrentTransformFeedback;
  
      // Queries that are currently running on the driver
      angle::PackedEnumMap<gl::QueryType, QueryGL *> mQueries;
  
      // Queries that are temporarily in the paused state so that their results will not be affected
      // by other operations
      angle::PackedEnumMap<gl::QueryType, QueryGL *> mTemporaryPausedQueries;
  
      gl::ContextID mPrevDrawContext;
  
      GLint mUnpackAlignment;
      GLint mUnpackRowLength;
      GLint mUnpackSkipRows;
      GLint mUnpackSkipPixels;
      GLint mUnpackImageHeight;
      GLint mUnpackSkipImages;
  
      GLint mPackAlignment;
      GLint mPackRowLength;
      GLint mPackSkipRows;
      GLint mPackSkipPixels;
  
      // TODO(jmadill): Convert to std::array when available
      std::vector<GLenum> mFramebuffers;
      GLuint mRenderbuffer;
  
      bool mScissorTestEnabled;
      gl::Rectangle mScissor;
      gl::Rectangle mViewport;
      float mNear;
      float mFar;
  
      bool mBlendEnabled;
      gl::ColorF mBlendColor;
      GLenum mSourceBlendRGB;
      GLenum mDestBlendRGB;
      GLenum mSourceBlendAlpha;
      GLenum mDestBlendAlpha;
      GLenum mBlendEquationRGB;
      GLenum mBlendEquationAlpha;
      bool mColorMaskRed;
      bool mColorMaskGreen;
      bool mColorMaskBlue;
      bool mColorMaskAlpha;
      bool mSampleAlphaToCoverageEnabled;
      bool mSampleCoverageEnabled;
      float mSampleCoverageValue;
      bool mSampleCoverageInvert;
      bool mSampleMaskEnabled;
      std::array<GLbitfield, gl::MAX_SAMPLE_MASK_WORDS> mSampleMaskValues;
  
      bool mDepthTestEnabled;
      GLenum mDepthFunc;
      bool mDepthMask;
      bool mStencilTestEnabled;
      GLenum mStencilFrontFunc;
      GLint mStencilFrontRef;
      GLuint mStencilFrontValueMask;
      GLenum mStencilFrontStencilFailOp;
      GLenum mStencilFrontStencilPassDepthFailOp;
      GLenum mStencilFrontStencilPassDepthPassOp;
      GLuint mStencilFrontWritemask;
      GLenum mStencilBackFunc;
      GLint mStencilBackRef;
      GLuint mStencilBackValueMask;
      GLenum mStencilBackStencilFailOp;
      GLenum mStencilBackStencilPassDepthFailOp;
      GLenum mStencilBackStencilPassDepthPassOp;
      GLuint mStencilBackWritemask;
  
      bool mCullFaceEnabled;
      gl::CullFaceMode mCullFace;
      GLenum mFrontFace;
      bool mPolygonOffsetFillEnabled;
      GLfloat mPolygonOffsetFactor;
      GLfloat mPolygonOffsetUnits;
      bool mRasterizerDiscardEnabled;
      float mLineWidth;
  
      bool mPrimitiveRestartEnabled;
  
      gl::ColorF mClearColor;
      float mClearDepth;
      GLint mClearStencil;
  
      bool mFramebufferSRGBEnabled;
      bool mDitherEnabled;
      bool mTextureCubemapSeamlessEnabled;
  
      bool mMultisamplingEnabled;
      bool mSampleAlphaToOneEnabled;
  
      GLenum mCoverageModulation;
  
      GLfloat mPathMatrixMV[16];
      GLfloat mPathMatrixProj[16];
      GLenum mPathStencilFunc;
      GLint mPathStencilRef;
      GLuint mPathStencilMask;
  
      const bool mIsMultiviewEnabled;
  
      GLenum mProvokingVertex;
  
      gl::State::DirtyBits mLocalDirtyBits;
      gl::AttributesMask mLocalDirtyCurrentValues;
  };
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_GL_STATEMANAGERGL_H_
  

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