kc3-lang/angle/src/libANGLE/GLES1Renderer.h

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• Hash : 9c4c0926
  Author :
  Date : 2018-06-13T09:29:00
  

  Reland "GLES1: Point rasterization (partial implementation)"
  
  This is a reland of 4004ae0e033a0169de3cb53c0a036833ad47178a
  
  Fix: Put the missing early-out in ValidatePointParameterCommon
  
  Original change's description:
  > GLES1: Point rasterization (partial implementation)
  >
  > - Not included: Smooth points
  >
  > - GL_OES_point_sprite
  > - Update test expectations. Note: due to different random sampling,
  > edge cases were hit in UserClip. Disabling that test for now.
  >
  > BUG=angleproject:2306
  >
  > Change-Id: If8367bc3321804b3299d3bc381d6a8e236754baa
  > Reviewed-on: https://chromium-review.googlesource.com/1101910
  > Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  > Commit-Queue: Lingfeng Yang <lfy@google.com>
  
  Bug: angleproject:2306
  Change-Id: Id8e71352a77ff0ce71cb604965effbfb8aca613e
  Reviewed-on: https://chromium-review.googlesource.com/1108458
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Commit-Queue: Lingfeng Yang <lfy@google.com>
  

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• src/libANGLE/GLES1Renderer.h

• //
  // 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.
  //
  
  // GLES1Renderer.h: Defines GLES1 emulation rendering operations on top of a GLES3
  // context. Used by Context.h.
  
  #ifndef LIBANGLE_GLES1_RENDERER_H_
  #define LIBANGLE_GLES1_RENDERER_H_
  
  #include "angle_gl.h"
  #include "common/angleutils.h"
  #include "libANGLE/angletypes.h"
  
  #include <memory>
  #include <string>
  #include <unordered_map>
  
  namespace gl
  {
  
  class Context;
  class Program;
  class State;
  class Shader;
  class ShaderProgramManager;
  
  class GLES1Renderer final : angle::NonCopyable
  {
    public:
      GLES1Renderer();
      ~GLES1Renderer();
  
      void onDestroy(Context *context, State *state);
  
      Error prepareForDraw(PrimitiveMode mode, Context *context, State *glState);
  
      int vertexArrayIndex(ClientVertexArrayType type, const State *glState) const;
      static int TexCoordArrayIndex(unsigned int unit);
      AttributesMask getVertexArraysAttributeMask(const State *glState) const;
  
    private:
      using Mat4Uniform = float[16];
      using Vec4Uniform = float[4];
      using Vec3Uniform = float[3];
  
      Shader *getShader(GLuint handle) const;
      Program *getProgram(GLuint handle) const;
  
      Error compileShader(Context *context,
                          ShaderType shaderType,
                          const char *src,
                          GLuint *shaderOut);
      Error linkProgram(Context *context,
                        State *glState,
                        GLuint vshader,
                        GLuint fshader,
                        const std::unordered_map<GLint, std::string> &attribLocs,
                        GLuint *programOut);
      Error initializeRendererProgram(Context *context, State *glState);
  
      void setUniform1i(Program *programObject, GLint loc, GLint value);
      void setUniform1iv(Program *programObject, GLint loc, GLint count, const GLint *value);
      void setUniformMatrix4fv(Program *programObject,
                               GLint loc,
                               GLint count,
                               GLboolean transpose,
                               const GLfloat *value);
      void setUniform4fv(Program *programObject, GLint loc, GLint count, const GLfloat *value);
      void setUniform3fv(Program *programObject, GLint loc, GLint count, const GLfloat *value);
      void setUniform1f(Program *programObject, GLint loc, GLfloat value);
      void setUniform1fv(Program *programObject, GLint loc, GLint count, const GLfloat *value);
  
      static constexpr int kTexUnitCount   = 4;
      static constexpr int kLightCount     = 8;
      static constexpr int kClipPlaneCount = 6;
  
      static constexpr int kVertexAttribIndex           = 0;
      static constexpr int kNormalAttribIndex           = 1;
      static constexpr int kColorAttribIndex            = 2;
      static constexpr int kPointSizeAttribIndex        = 3;
      static constexpr int kTextureCoordAttribIndexBase = 4;
  
      bool mRendererProgramInitialized;
      ShaderProgramManager *mShaderPrograms;
  
      struct GLES1ProgramState
      {
          GLuint program;
  
          GLint projMatrixLoc;
          GLint modelviewMatrixLoc;
          GLint textureMatrixLoc;
          GLint modelviewInvTrLoc;
  
          // Texturing
          GLint enableTexture2DLoc;
          GLint enableTextureCubeMapLoc;
          std::array<GLint, kTexUnitCount> tex2DSamplerLocs;
          std::array<GLint, kTexUnitCount> texCubeSamplerLocs;
  
          GLint textureFormatLoc;
  
          GLint textureEnvModeLoc;
          GLint combineRgbLoc;
          GLint combineAlphaLoc;
          GLint src0rgbLoc;
          GLint src0alphaLoc;
          GLint src1rgbLoc;
          GLint src1alphaLoc;
          GLint src2rgbLoc;
          GLint src2alphaLoc;
          GLint op0rgbLoc;
          GLint op0alphaLoc;
          GLint op1rgbLoc;
          GLint op1alphaLoc;
          GLint op2rgbLoc;
          GLint op2alphaLoc;
          GLint textureEnvColorLoc;
          GLint rgbScaleLoc;
          GLint alphaScaleLoc;
          GLint pointSpriteCoordReplaceLoc;
  
          // Alpha test
          GLint enableAlphaTestLoc;
          GLint alphaFuncLoc;
          GLint alphaTestRefLoc;
  
          // Shading, materials, and lighting
          GLint shadeModelFlatLoc;
          GLint enableLightingLoc;
          GLint enableRescaleNormalLoc;
          GLint enableNormalizeLoc;
          GLint enableColorMaterialLoc;
  
          GLint materialAmbientLoc;
          GLint materialDiffuseLoc;
          GLint materialSpecularLoc;
          GLint materialEmissiveLoc;
          GLint materialSpecularExponentLoc;
  
          GLint lightModelSceneAmbientLoc;
          GLint lightModelTwoSidedLoc;
  
          GLint lightEnablesLoc;
          GLint lightAmbientsLoc;
          GLint lightDiffusesLoc;
          GLint lightSpecularsLoc;
          GLint lightPositionsLoc;
          GLint lightDirectionsLoc;
          GLint lightSpotlightExponentsLoc;
          GLint lightSpotlightCutoffAnglesLoc;
          GLint lightAttenuationConstsLoc;
          GLint lightAttenuationLinearsLoc;
          GLint lightAttenuationQuadraticsLoc;
  
          // Fog
          GLint fogEnableLoc;
          GLint fogModeLoc;
          GLint fogDensityLoc;
          GLint fogStartLoc;
          GLint fogEndLoc;
          GLint fogColorLoc;
  
          // Clip planes
          GLint enableClipPlanesLoc;
          GLint clipPlaneEnablesLoc;
          GLint clipPlanesLoc;
  
          // Point rasterization
          GLint pointRasterizationLoc;
          GLint pointSizeMinLoc;
          GLint pointSizeMaxLoc;
          GLint pointDistanceAttenuationLoc;
          GLint pointSpriteEnabledLoc;
      };
  
      struct GLES1UniformBuffers
      {
          std::array<Mat4Uniform, kTexUnitCount> textureMatrices;
          std::array<GLint, kTexUnitCount> tex2DEnables;
          std::array<GLint, kTexUnitCount> texCubeEnables;
  
          std::array<GLint, kTexUnitCount> texEnvModes;
          std::array<GLint, kTexUnitCount> texCombineRgbs;
          std::array<GLint, kTexUnitCount> texCombineAlphas;
  
          std::array<GLint, kTexUnitCount> texCombineSrc0Rgbs;
          std::array<GLint, kTexUnitCount> texCombineSrc0Alphas;
          std::array<GLint, kTexUnitCount> texCombineSrc1Rgbs;
          std::array<GLint, kTexUnitCount> texCombineSrc1Alphas;
          std::array<GLint, kTexUnitCount> texCombineSrc2Rgbs;
          std::array<GLint, kTexUnitCount> texCombineSrc2Alphas;
          std::array<GLint, kTexUnitCount> texCombineOp0Rgbs;
          std::array<GLint, kTexUnitCount> texCombineOp0Alphas;
          std::array<GLint, kTexUnitCount> texCombineOp1Rgbs;
          std::array<GLint, kTexUnitCount> texCombineOp1Alphas;
          std::array<GLint, kTexUnitCount> texCombineOp2Rgbs;
          std::array<GLint, kTexUnitCount> texCombineOp2Alphas;
          std::array<Vec4Uniform, kTexUnitCount> texEnvColors;
          std::array<GLfloat, kTexUnitCount> texEnvRgbScales;
          std::array<GLfloat, kTexUnitCount> texEnvAlphaScales;
          std::array<GLint, kTexUnitCount> pointSpriteCoordReplaces;
  
          // Lighting
          std::array<GLint, kLightCount> lightEnables;
          std::array<Vec4Uniform, kLightCount> lightAmbients;
          std::array<Vec4Uniform, kLightCount> lightDiffuses;
          std::array<Vec4Uniform, kLightCount> lightSpeculars;
          std::array<Vec4Uniform, kLightCount> lightPositions;
          std::array<Vec3Uniform, kLightCount> lightDirections;
          std::array<GLfloat, kLightCount> spotlightExponents;
          std::array<GLfloat, kLightCount> spotlightCutoffAngles;
          std::array<GLfloat, kLightCount> attenuationConsts;
          std::array<GLfloat, kLightCount> attenuationLinears;
          std::array<GLfloat, kLightCount> attenuationQuadratics;
  
          // Clip planes
          std::array<GLint, kClipPlaneCount> clipPlaneEnables;
          std::array<Vec4Uniform, kClipPlaneCount> clipPlanes;
      };
  
      GLES1UniformBuffers mUniformBuffers;
      GLES1ProgramState mProgramState;
  };
  
  }  // namespace gl
  
  #endif  // LIBANGLE_GLES1_RENDERER_H_
  

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