kc3-lang/angle/src/libANGLE/GLES1State.cpp

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• Author : Jamie Madill
  Date : 2019-09-26 10:19:38
  Hash : d627d154
  Message : GLES1: Correct 'active' attributes mask. The active attributes are those consumed by the Program. Previously we were returning those enabled as client arrays. But this excluded default attributes. Uncovered when changing how resource usage was tracked for Vulkan multithreading. Bug: angleproject:2464 Change-Id: I48996be9e4470bb1432e042f98046c95ea8adbfe Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1808718 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>

• src/libANGLE/GLES1State.cpp

• //
  // Copyright 2018 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.
  //
  
  // GLES1State.cpp: Implements the GLES1State class, tracking state
  // for GLES1 contexts.
  
  #include "libANGLE/GLES1State.h"
  
  #include "libANGLE/Context.h"
  #include "libANGLE/GLES1Renderer.h"
  
  namespace gl
  {
  
  TextureCoordF::TextureCoordF() = default;
  
  TextureCoordF::TextureCoordF(float _s, float _t, float _r, float _q) : s(_s), t(_t), r(_r), q(_q) {}
  
  bool TextureCoordF::operator==(const TextureCoordF &other) const
  {
      return s == other.s && t == other.t && r == other.r && q == other.q;
  }
  
  MaterialParameters::MaterialParameters() = default;
  
  LightModelParameters::LightModelParameters() = default;
  
  LightParameters::LightParameters() = default;
  
  LightParameters::LightParameters(const LightParameters &other) = default;
  
  FogParameters::FogParameters() = default;
  
  TextureEnvironmentParameters::TextureEnvironmentParameters() = default;
  
  TextureEnvironmentParameters::TextureEnvironmentParameters(
      const TextureEnvironmentParameters &other) = default;
  
  PointParameters::PointParameters() = default;
  
  PointParameters::PointParameters(const PointParameters &other) = default;
  
  ClipPlaneParameters::ClipPlaneParameters() = default;
  
  ClipPlaneParameters::ClipPlaneParameters(bool enabled, const angle::Vector4 &equation)
      : enabled(enabled), equation(equation)
  {}
  
  ClipPlaneParameters::ClipPlaneParameters(const ClipPlaneParameters &other) = default;
  
  GLES1State::GLES1State()
      : mGLState(nullptr),
        mVertexArrayEnabled(false),
        mNormalArrayEnabled(false),
        mColorArrayEnabled(false),
        mPointSizeArrayEnabled(false),
        mLineSmoothEnabled(false),
        mPointSmoothEnabled(false),
        mPointSpriteEnabled(false),
        mAlphaTestEnabled(false),
        mLogicOpEnabled(false),
        mLightingEnabled(false),
        mFogEnabled(false),
        mRescaleNormalEnabled(false),
        mNormalizeEnabled(false),
        mColorMaterialEnabled(false),
        mReflectionMapEnabled(false),
        mCurrentColor({0.0f, 0.0f, 0.0f, 0.0f}),
        mCurrentNormal({0.0f, 0.0f, 0.0f}),
        mClientActiveTexture(0),
        mMatrixMode(MatrixType::Modelview),
        mShadeModel(ShadingModel::Smooth),
        mAlphaTestFunc(AlphaTestFunc::AlwaysPass),
        mAlphaTestRef(0.0f),
        mLogicOp(LogicalOperation::Copy),
        mLineSmoothHint(HintSetting::DontCare),
        mPointSmoothHint(HintSetting::DontCare),
        mPerspectiveCorrectionHint(HintSetting::DontCare),
        mFogHint(HintSetting::DontCare)
  {}
  
  GLES1State::~GLES1State() = default;
  
  // Taken from the GLES 1.x spec which specifies all initial state values.
  void GLES1State::initialize(const Context *context, const State *state)
  {
      mGLState = state;
  
      const Caps &caps = context->getCaps();
  
      mTexUnitEnables.resize(caps.maxMultitextureUnits);
      for (auto &enables : mTexUnitEnables)
      {
          enables.reset();
      }
  
      mVertexArrayEnabled    = false;
      mNormalArrayEnabled    = false;
      mColorArrayEnabled     = false;
      mPointSizeArrayEnabled = false;
      mTexCoordArrayEnabled.resize(caps.maxMultitextureUnits, false);
  
      mLineSmoothEnabled    = false;
      mPointSmoothEnabled   = false;
      mPointSpriteEnabled   = false;
      mLogicOpEnabled       = false;
      mAlphaTestEnabled     = false;
      mLightingEnabled      = false;
      mFogEnabled           = false;
      mRescaleNormalEnabled = false;
      mNormalizeEnabled     = false;
      mColorMaterialEnabled = false;
      mReflectionMapEnabled = false;
  
      mMatrixMode = MatrixType::Modelview;
  
      mCurrentColor  = {1.0f, 1.0f, 1.0f, 1.0f};
      mCurrentNormal = {0.0f, 0.0f, 1.0f};
      mCurrentTextureCoords.resize(caps.maxMultitextureUnits);
      mClientActiveTexture = 0;
  
      mTextureEnvironments.resize(caps.maxMultitextureUnits);
  
      mModelviewMatrices.push_back(angle::Mat4());
      mProjectionMatrices.push_back(angle::Mat4());
      mTextureMatrices.resize(caps.maxMultitextureUnits);
      for (auto &stack : mTextureMatrices)
      {
          stack.push_back(angle::Mat4());
      }
  
      mMaterial.ambient  = {0.2f, 0.2f, 0.2f, 1.0f};
      mMaterial.diffuse  = {0.8f, 0.8f, 0.8f, 1.0f};
      mMaterial.specular = {0.0f, 0.0f, 0.0f, 1.0f};
      mMaterial.emissive = {0.0f, 0.0f, 0.0f, 1.0f};
  
      mMaterial.specularExponent = 0.0f;
  
      mLightModel.color    = {0.2f, 0.2f, 0.2f, 1.0f};
      mLightModel.twoSided = false;
  
      mLights.resize(caps.maxLights);
  
      // GL_LIGHT0 is special and has default state that avoids all-black renderings.
      mLights[0].diffuse  = {1.0f, 1.0f, 1.0f, 1.0f};
      mLights[0].specular = {1.0f, 1.0f, 1.0f, 1.0f};
  
      mFog.mode    = FogMode::Exp;
      mFog.density = 1.0f;
      mFog.start   = 0.0f;
      mFog.end     = 1.0f;
  
      mFog.color = {0.0f, 0.0f, 0.0f, 0.0f};
  
      mShadeModel = ShadingModel::Smooth;
  
      mAlphaTestFunc = AlphaTestFunc::AlwaysPass;
      mAlphaTestRef  = 0.0f;
  
      mLogicOp = LogicalOperation::Copy;
  
      mClipPlanes.resize(caps.maxClipPlanes,
                         ClipPlaneParameters(false, angle::Vector4(0.0f, 0.0f, 0.0f, 0.0f)));
  
      mLineSmoothHint            = HintSetting::DontCare;
      mPointSmoothHint           = HintSetting::DontCare;
      mPerspectiveCorrectionHint = HintSetting::DontCare;
      mFogHint                   = HintSetting::DontCare;
  
      // The user-specified point size, GL_POINT_SIZE_MAX,
      // is initially equal to the implementation maximum.
      mPointParameters.pointSizeMax = caps.maxAliasedPointSize;
  
      mDirtyBits.set();
  }
  
  void GLES1State::setAlphaFunc(AlphaTestFunc func, GLfloat ref)
  {
      setDirty(DIRTY_GLES1_ALPHA_TEST);
      mAlphaTestFunc = func;
      mAlphaTestRef  = ref;
  }
  
  void GLES1State::setClientTextureUnit(unsigned int unit)
  {
      setDirty(DIRTY_GLES1_CLIENT_ACTIVE_TEXTURE);
      mClientActiveTexture = unit;
  }
  
  unsigned int GLES1State::getClientTextureUnit() const
  {
      return mClientActiveTexture;
  }
  
  void GLES1State::setCurrentColor(const ColorF &color)
  {
      setDirty(DIRTY_GLES1_CURRENT_VECTOR);
      mCurrentColor = color;
  }
  
  const ColorF &GLES1State::getCurrentColor() const
  {
      return mCurrentColor;
  }
  
  void GLES1State::setCurrentNormal(const angle::Vector3 &normal)
  {
      setDirty(DIRTY_GLES1_CURRENT_VECTOR);
      mCurrentNormal = normal;
  }
  
  const angle::Vector3 &GLES1State::getCurrentNormal() const
  {
      return mCurrentNormal;
  }
  
  void GLES1State::setCurrentTextureCoords(unsigned int unit, const TextureCoordF &coords)
  {
      setDirty(DIRTY_GLES1_CURRENT_VECTOR);
      mCurrentTextureCoords[unit] = coords;
  }
  
  const TextureCoordF &GLES1State::getCurrentTextureCoords(unsigned int unit) const
  {
      return mCurrentTextureCoords[unit];
  }
  
  void GLES1State::setMatrixMode(MatrixType mode)
  {
      setDirty(DIRTY_GLES1_MATRICES);
      mMatrixMode = mode;
  }
  
  MatrixType GLES1State::getMatrixMode() const
  {
      return mMatrixMode;
  }
  
  GLint GLES1State::getCurrentMatrixStackDepth(GLenum queryType) const
  {
      switch (queryType)
      {
          case GL_MODELVIEW_STACK_DEPTH:
              return clampCast<GLint>(mModelviewMatrices.size());
          case GL_PROJECTION_STACK_DEPTH:
              return clampCast<GLint>(mProjectionMatrices.size());
          case GL_TEXTURE_STACK_DEPTH:
              return clampCast<GLint>(mTextureMatrices[mGLState->getActiveSampler()].size());
          default:
              UNREACHABLE();
              return 0;
      }
  }
  
  void GLES1State::pushMatrix()
  {
      setDirty(DIRTY_GLES1_MATRICES);
      auto &stack = currentMatrixStack();
      stack.push_back(stack.back());
  }
  
  void GLES1State::popMatrix()
  {
      setDirty(DIRTY_GLES1_MATRICES);
      auto &stack = currentMatrixStack();
      stack.pop_back();
  }
  
  GLES1State::MatrixStack &GLES1State::currentMatrixStack()
  {
      setDirty(DIRTY_GLES1_MATRICES);
      switch (mMatrixMode)
      {
          case MatrixType::Modelview:
              return mModelviewMatrices;
          case MatrixType::Projection:
              return mProjectionMatrices;
          case MatrixType::Texture:
              return mTextureMatrices[mGLState->getActiveSampler()];
          default:
              UNREACHABLE();
              return mModelviewMatrices;
      }
  }
  
  const angle::Mat4 &GLES1State::getModelviewMatrix() const
  {
      return mModelviewMatrices.back();
  }
  
  const GLES1State::MatrixStack &GLES1State::currentMatrixStack() const
  {
      switch (mMatrixMode)
      {
          case MatrixType::Modelview:
              return mModelviewMatrices;
          case MatrixType::Projection:
              return mProjectionMatrices;
          case MatrixType::Texture:
              return mTextureMatrices[mGLState->getActiveSampler()];
          default:
              UNREACHABLE();
              return mModelviewMatrices;
      }
  }
  
  void GLES1State::loadMatrix(const angle::Mat4 &m)
  {
      setDirty(DIRTY_GLES1_MATRICES);
      currentMatrixStack().back() = m;
  }
  
  void GLES1State::multMatrix(const angle::Mat4 &m)
  {
      setDirty(DIRTY_GLES1_MATRICES);
      angle::Mat4 currentMatrix   = currentMatrixStack().back();
      currentMatrixStack().back() = currentMatrix.product(m);
  }
  
  void GLES1State::setLogicOp(LogicalOperation opcodePacked)
  {
      setDirty(DIRTY_GLES1_LOGIC_OP);
      mLogicOp = opcodePacked;
  }
  
  void GLES1State::setClientStateEnabled(ClientVertexArrayType clientState, bool enable)
  {
      setDirty(DIRTY_GLES1_CLIENT_STATE_ENABLE);
      switch (clientState)
      {
          case ClientVertexArrayType::Vertex:
              mVertexArrayEnabled = enable;
              break;
          case ClientVertexArrayType::Normal:
              mNormalArrayEnabled = enable;
              break;
          case ClientVertexArrayType::Color:
              mColorArrayEnabled = enable;
              break;
          case ClientVertexArrayType::PointSize:
              mPointSizeArrayEnabled = enable;
              break;
          case ClientVertexArrayType::TextureCoord:
              mTexCoordArrayEnabled[mClientActiveTexture] = enable;
              break;
          default:
              UNREACHABLE();
              break;
      }
  }
  
  void GLES1State::setTexCoordArrayEnabled(unsigned int unit, bool enable)
  {
      setDirty(DIRTY_GLES1_CLIENT_STATE_ENABLE);
      mTexCoordArrayEnabled[unit] = enable;
  }
  
  bool GLES1State::isClientStateEnabled(ClientVertexArrayType clientState) const
  {
      switch (clientState)
      {
          case ClientVertexArrayType::Vertex:
              return mVertexArrayEnabled;
          case ClientVertexArrayType::Normal:
              return mNormalArrayEnabled;
          case ClientVertexArrayType::Color:
              return mColorArrayEnabled;
          case ClientVertexArrayType::PointSize:
              return mPointSizeArrayEnabled;
          case ClientVertexArrayType::TextureCoord:
              return mTexCoordArrayEnabled[mClientActiveTexture];
          default:
              UNREACHABLE();
              return false;
      }
  }
  
  bool GLES1State::isTexCoordArrayEnabled(unsigned int unit) const
  {
      ASSERT(unit < mTexCoordArrayEnabled.size());
      return mTexCoordArrayEnabled[unit];
  }
  
  bool GLES1State::isTextureTargetEnabled(unsigned int unit, const TextureType type) const
  {
      return mTexUnitEnables[unit].test(type);
  }
  
  LightModelParameters &GLES1State::lightModelParameters()
  {
      setDirty(DIRTY_GLES1_LIGHTS);
      return mLightModel;
  }
  
  const LightModelParameters &GLES1State::lightModelParameters() const
  {
      return mLightModel;
  }
  
  LightParameters &GLES1State::lightParameters(unsigned int light)
  {
      setDirty(DIRTY_GLES1_LIGHTS);
      return mLights[light];
  }
  
  const LightParameters &GLES1State::lightParameters(unsigned int light) const
  {
      return mLights[light];
  }
  
  MaterialParameters &GLES1State::materialParameters()
  {
      setDirty(DIRTY_GLES1_MATERIAL);
      return mMaterial;
  }
  
  const MaterialParameters &GLES1State::materialParameters() const
  {
      return mMaterial;
  }
  
  bool GLES1State::isColorMaterialEnabled() const
  {
      return mColorMaterialEnabled;
  }
  
  void GLES1State::setShadeModel(ShadingModel model)
  {
      setDirty(DIRTY_GLES1_SHADE_MODEL);
      mShadeModel = model;
  }
  
  void GLES1State::setClipPlane(unsigned int plane, const GLfloat *equation)
  {
      setDirty(DIRTY_GLES1_CLIP_PLANES);
      assert(plane < mClipPlanes.size());
      mClipPlanes[plane].equation[0] = equation[0];
      mClipPlanes[plane].equation[1] = equation[1];
      mClipPlanes[plane].equation[2] = equation[2];
      mClipPlanes[plane].equation[3] = equation[3];
  }
  
  void GLES1State::getClipPlane(unsigned int plane, GLfloat *equation) const
  {
      assert(plane < mClipPlanes.size());
      equation[0] = mClipPlanes[plane].equation[0];
      equation[1] = mClipPlanes[plane].equation[1];
      equation[2] = mClipPlanes[plane].equation[2];
      equation[3] = mClipPlanes[plane].equation[3];
  }
  
  FogParameters &GLES1State::fogParameters()
  {
      setDirty(DIRTY_GLES1_FOG);
      return mFog;
  }
  
  const FogParameters &GLES1State::fogParameters() const
  {
      return mFog;
  }
  
  TextureEnvironmentParameters &GLES1State::textureEnvironment(unsigned int unit)
  {
      setDirty(DIRTY_GLES1_TEXTURE_ENVIRONMENT);
      assert(unit < mTextureEnvironments.size());
      return mTextureEnvironments[unit];
  }
  
  const TextureEnvironmentParameters &GLES1State::textureEnvironment(unsigned int unit) const
  {
      assert(unit < mTextureEnvironments.size());
      return mTextureEnvironments[unit];
  }
  
  PointParameters &GLES1State::pointParameters()
  {
      setDirty(DIRTY_GLES1_POINT_PARAMETERS);
      return mPointParameters;
  }
  
  const PointParameters &GLES1State::pointParameters() const
  {
      return mPointParameters;
  }
  
  AttributesMask GLES1State::getVertexArraysAttributeMask() const
  {
      AttributesMask attribsMask;
  
      ClientVertexArrayType nonTexcoordArrays[] = {
          ClientVertexArrayType::Vertex,
          ClientVertexArrayType::Normal,
          ClientVertexArrayType::Color,
          ClientVertexArrayType::PointSize,
      };
  
      for (const ClientVertexArrayType attrib : nonTexcoordArrays)
      {
          attribsMask.set(GLES1Renderer::VertexArrayIndex(attrib, *this),
                          isClientStateEnabled(attrib));
      }
  
      for (unsigned int i = 0; i < GLES1Renderer::kTexUnitCount; i++)
      {
          attribsMask.set(GLES1Renderer::TexCoordArrayIndex(i), isTexCoordArrayEnabled(i));
      }
  
      return attribsMask;
  }
  
  AttributesMask GLES1State::getActiveAttributesMask() const
  {
      // The program always has 8 attributes enabled.
      return AttributesMask(0xFF);
  }
  
  void GLES1State::setHint(GLenum target, GLenum mode)
  {
      setDirty(DIRTY_GLES1_HINT_SETTING);
      HintSetting setting = FromGLenum<HintSetting>(mode);
      switch (target)
      {
          case GL_PERSPECTIVE_CORRECTION_HINT:
              mPerspectiveCorrectionHint = setting;
              break;
          case GL_POINT_SMOOTH_HINT:
              mPointSmoothHint = setting;
              break;
          case GL_LINE_SMOOTH_HINT:
              mLineSmoothHint = setting;
              break;
          case GL_FOG_HINT:
              mFogHint = setting;
              break;
          default:
              UNREACHABLE();
      }
  }
  
  GLenum GLES1State::getHint(GLenum target)
  {
      switch (target)
      {
          case GL_PERSPECTIVE_CORRECTION_HINT:
              return ToGLenum(mPerspectiveCorrectionHint);
          case GL_POINT_SMOOTH_HINT:
              return ToGLenum(mPointSmoothHint);
          case GL_LINE_SMOOTH_HINT:
              return ToGLenum(mLineSmoothHint);
          case GL_FOG_HINT:
              return ToGLenum(mFogHint);
          default:
              UNREACHABLE();
              return 0;
      }
  }
  
  void GLES1State::setDirty(DirtyGles1Type type)
  {
      mDirtyBits.set(type);
  }
  
  void GLES1State::setAllDirty()
  {
      mDirtyBits.set();
  }
  
  void GLES1State::clearDirty()
  {
      mDirtyBits.reset();
  }
  
  bool GLES1State::isDirty(DirtyGles1Type type) const
  {
      return mDirtyBits.test(type);
  }
  
  }  // namespace gl