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

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• Hash : e3e680ca
  Author :
  Date : 2018-12-03T17:49:08
  

  Remove State::syncProgramTextures.
  
  Removes the concept of the program textures dirty object. Instead we
  use a set of dirty bits to represent dirty texture samples. We mark
  certain textures dirty and update state structures whenever there is
  a new Texture/Program/Sampler bound, or when Texture/Program/Sampler
  state changes.
  
  This is in preparation for making clearing the uncleared active
  textures into a dirty bit as well.
  
  Also includes new dirty bit handling for texture image units. These are
  a GLES 3.1 feature.
  
  Bug: angleproject:2966
  Change-Id: Ibb8619dd2669bb39fdbcd75e3685be9a8aeeee91
  Reviewed-on: https://chromium-review.googlesource.com/c/1346649
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  

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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 GLES1State;
  class Program;
  class State;
  class Shader;
  class ShaderProgramManager;
  
  class GLES1Renderer final : angle::NonCopyable
  {
    public:
      GLES1Renderer();
      ~GLES1Renderer();
  
      void onDestroy(Context *context, State *state);
  
      angle::Result prepareForDraw(PrimitiveMode mode, Context *context, State *glState);
  
      static int VertexArrayIndex(ClientVertexArrayType type, const GLES1State &gles1);
      static int TexCoordArrayIndex(unsigned int unit);
  
      void drawTexture(Context *context,
                       State *glState,
                       float x,
                       float y,
                       float z,
                       float width,
                       float height);
  
      static constexpr int kTexUnitCount = 4;
  
    private:
      using Mat4Uniform = float[16];
      using Vec4Uniform = float[4];
      using Vec3Uniform = float[3];
  
      Shader *getShader(GLuint handle) const;
      Program *getProgram(GLuint handle) const;
  
      angle::Result compileShader(Context *context,
                                  ShaderType shaderType,
                                  const char *src,
                                  GLuint *shaderOut);
      angle::Result linkProgram(Context *context,
                                State *glState,
                                GLuint vshader,
                                GLuint fshader,
                                const std::unordered_map<GLint, std::string> &attribLocs,
                                GLuint *programOut);
      angle::Result initializeRendererProgram(Context *context, State *glState);
  
      void setUniform1i(Context *context, Program *programObject, GLint loc, GLint value);
      void setUniform1iv(Context *context,
                         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 setUniform2fv(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);
  
      void setAttributesEnabled(Context *context, State *glState, AttributesMask mask);
  
      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;
  
          // Draw texture
          GLint enableDrawTextureLoc;
          GLint drawTextureCoordsLoc;
          GLint drawTextureDimsLoc;
          GLint drawTextureNormalizedCropRectLoc;
      };
  
      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;
  
          // Texture crop rectangles
          std::array<Vec4Uniform, kTexUnitCount> texCropRects;
      };
  
      GLES1UniformBuffers mUniformBuffers;
      GLES1ProgramState mProgramState;
  
      bool mDrawTextureEnabled      = false;
      GLfloat mDrawTextureCoords[4] = {0.0f, 0.0f, 0.0f, 0.0f};
      GLfloat mDrawTextureDims[2]   = {0.0f, 0.0f};
  };
  
  }  // namespace gl
  
  #endif  // LIBANGLE_GLES1_RENDERER_H_
  

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