gpu/command_buffer/client/program_info_manager.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef GPU_COMMAND_BUFFER_CLIENT_PROGRAM_INFO_MANAGER_H_
   6 #define GPU_COMMAND_BUFFER_CLIENT_PROGRAM_INFO_MANAGER_H_
   7
   8 #include <GLES3/gl3.h>
   9
  10 #include <string>
  11 #include <vector>
  12
  13 #include "base/containers/hash_tables.h"
  14 #include "base/gtest_prod_util.h"
  15 #include "base/synchronization/lock.h"
  16 #include "gles2_impl_export.h"
  17 #include "gpu/command_buffer/client/gles2_implementation.h"
  18
  19 namespace gpu {
  20 namespace gles2 {
  21
  22 // Manages info about OpenGL ES Programs.
  23 class GLES2_IMPL_EXPORT ProgramInfoManager {
  24  public:
  25   ProgramInfoManager();
  26   ~ProgramInfoManager();
  27
  28   void CreateInfo(GLuint program);
  29
  30   void DeleteInfo(GLuint program);
  31
  32   bool GetProgramiv(
  33       GLES2Implementation* gl, GLuint program, GLenum pname, GLint* params);
  34
  35   GLint GetAttribLocation(
  36       GLES2Implementation* gl, GLuint program, const char* name);
  37
  38   GLint GetUniformLocation(
  39       GLES2Implementation* gl, GLuint program, const char* name);
  40
  41   GLint GetFragDataLocation(
  42       GLES2Implementation* gl, GLuint program, const char* name);
  43
  44   bool GetActiveAttrib(
  45       GLES2Implementation* gl, GLuint program, GLuint index, GLsizei bufsize,
  46       GLsizei* length, GLint* size, GLenum* type, char* name);
  47
  48   bool GetActiveUniform(
  49       GLES2Implementation* gl, GLuint program, GLuint index, GLsizei bufsize,
  50       GLsizei* length, GLint* size, GLenum* type, char* name);
  51
  52   GLuint GetUniformBlockIndex(
  53       GLES2Implementation* gl, GLuint program, const char* name);
  54
  55   bool GetActiveUniformBlockName(
  56       GLES2Implementation* gl, GLuint program, GLuint index,
  57       GLsizei buf_size, GLsizei* length, char* name);
  58
  59   bool GetActiveUniformBlockiv(
  60       GLES2Implementation* gl, GLuint program, GLuint index,
  61       GLenum pname, GLint* params);
  62
  63   // Attempt to update the |index| uniform block binding.
  64   // It's no op if the program does not exist, or the |index| uniform block
  65   // is not in the cache, or binding >= GL_MAX_UNIFORM_BUFFER_BINDINGS.
  66   void UniformBlockBinding(
  67       GLES2Implementation* gl, GLuint program, GLuint index, GLuint binding);
  68
  69   bool GetTransformFeedbackVarying(
  70       GLES2Implementation* gl, GLuint program, GLuint index, GLsizei bufsize,
  71       GLsizei* length, GLsizei* size, GLenum* type, char* name);
  72
  73   bool GetUniformIndices(
  74       GLES2Implementation* gl, GLuint program, GLsizei count,
  75       const char* const* names, GLuint* indices);
  76
  77   bool GetActiveUniformsiv(
  78       GLES2Implementation* gl, GLuint program, GLsizei count,
  79       const GLuint* indices, GLenum pname, GLint* params);
  80
  81  private:
  82   friend class ProgramInfoManagerTest;
  83
  84   FRIEND_TEST_ALL_PREFIXES(ProgramInfoManagerTest, UpdateES2);
  85   FRIEND_TEST_ALL_PREFIXES(ProgramInfoManagerTest, UpdateES3UniformBlocks);
  86   FRIEND_TEST_ALL_PREFIXES(ProgramInfoManagerTest,
  87                            UpdateES3TransformFeedbackVaryings);
  88   FRIEND_TEST_ALL_PREFIXES(ProgramInfoManagerTest,
  89                            GetActiveUniformsivCached);
  90
  91   enum ProgramInfoType {
  92     kES2,
  93     kES3UniformBlocks,
  94     kES3TransformFeedbackVaryings,
  95     kES3Uniformsiv,
  96     kNone,
  97   };
  98
  99   // Need GLES2_IMPL_EXPORT for tests.
 100   class GLES2_IMPL_EXPORT Program {
 101    public:
 102     struct UniformInfo {
 103       UniformInfo(GLsizei _size, GLenum _type, const std::string& _name);
 104       ~UniformInfo();
 105
 106       GLsizei size;
 107       GLenum type;
 108       bool is_array;
 109       std::string name;
 110       std::vector<GLint> element_locations;
 111     };
 112     struct UniformES3 {
 113       UniformES3();
 114       ~UniformES3();
 115
 116       GLint block_index;
 117       GLint offset;
 118       GLint array_stride;
 119       GLint matrix_stride;
 120       GLint is_row_major;
 121     };
 122     struct VertexAttrib {
 123       VertexAttrib(GLsizei _size, GLenum _type, const std::string& _name,
 124                    GLint _location);
 125       ~VertexAttrib();
 126
 127       GLsizei size;
 128       GLenum type;
 129       GLint location;
 130       std::string name;
 131     };
 132     struct UniformBlock {
 133       UniformBlock();
 134       ~UniformBlock();
 135
 136       GLuint binding;
 137       GLuint data_size;
 138       std::vector<GLuint> active_uniform_indices;
 139       GLboolean referenced_by_vertex_shader;
 140       GLboolean referenced_by_fragment_shader;
 141       std::string name;
 142     };
 143     struct TransformFeedbackVarying {
 144       TransformFeedbackVarying();
 145       ~TransformFeedbackVarying();
 146
 147       GLsizei size;
 148       GLenum type;
 149       std::string name;
 150     };
 151
 152     Program();
 153     ~Program();
 154
 155     const VertexAttrib* GetAttribInfo(GLint index) const;
 156
 157     GLint GetAttribLocation(const std::string& name) const;
 158
 159     const UniformInfo* GetUniformInfo(GLint index) const;
 160
 161     // Gets the location of a uniform by name.
 162     GLint GetUniformLocation(const std::string& name) const;
 163     // Gets the index of a uniform by name. Return INVALID_INDEX in failure.
 164     GLuint GetUniformIndex(const std::string& name) const;
 165
 166     bool GetUniformsiv(
 167         GLsizei count, const GLuint* indices, GLenum pname, GLint* params);
 168
 169     GLint GetFragDataLocation(const std::string& name) const;
 170     void CacheFragDataLocation(const std::string& name, GLint loc);
 171
 172     bool GetProgramiv(GLenum pname, GLint* params);
 173
 174     // Gets the index of a uniform block by name.
 175     GLuint GetUniformBlockIndex(const std::string& name) const;
 176     const UniformBlock* GetUniformBlock(GLuint index) const;
 177     // Update the binding if the |index| uniform block is in the cache.
 178     void UniformBlockBinding(GLuint index, GLuint binding);
 179
 180     const TransformFeedbackVarying* GetTransformFeedbackVarying(
 181         GLuint index) const;
 182
 183     // Updates the ES2 only program info after a successful link.
 184     void UpdateES2(const std::vector<int8>& result);
 185
 186     // Updates the ES3 UniformBlock info after a successful link.
 187     void UpdateES3UniformBlocks(const std::vector<int8>& result);
 188
 189     // Updates the ES3 Uniformsiv info after a successful link.
 190     void UpdateES3Uniformsiv(const std::vector<int8>& result);
 191
 192     // Updates the ES3 TransformFeedbackVaryings info after a successful link.
 193     void UpdateES3TransformFeedbackVaryings(const std::vector<int8>& result);
 194
 195     bool IsCached(ProgramInfoType type) const;
 196
 197    private:
 198     bool cached_es2_;
 199
 200     GLsizei max_attrib_name_length_;
 201
 202     // Attrib by index.
 203     std::vector<VertexAttrib> attrib_infos_;
 204
 205     GLsizei max_uniform_name_length_;
 206
 207     // Uniform info by index.
 208     std::vector<UniformInfo> uniform_infos_;
 209
 210     // This is true if glLinkProgram was successful last time it was called.
 211     bool link_status_;
 212
 213     // BELOW ARE ES3 ONLY INFORMATION.
 214
 215     bool cached_es3_uniform_blocks_;
 216
 217     uint32_t active_uniform_block_max_name_length_;
 218
 219     // Uniform blocks by index.
 220     std::vector<UniformBlock> uniform_blocks_;
 221
 222     bool cached_es3_transform_feedback_varyings_;
 223
 224     uint32_t transform_feedback_varying_max_length_;
 225     GLenum transform_feedback_buffer_mode_;
 226
 227     // TransformFeedback varyings by index.
 228     std::vector<TransformFeedbackVarying> transform_feedback_varyings_;
 229
 230     bool cached_es3_uniformsiv_;
 231
 232     std::vector<UniformES3> uniforms_es3_;
 233
 234     base::hash_map<std::string, GLint> frag_data_locations_;
 235   };
 236
 237   Program* GetProgramInfo(
 238       GLES2Implementation* gl, GLuint program, ProgramInfoType type);
 239
 240   typedef base::hash_map<GLuint, Program> ProgramInfoMap;
 241
 242   ProgramInfoMap program_infos_;
 243
 244   mutable base::Lock lock_;
 245 };
 246
 247 }  // namespace gles2
 248 }  // namespace gpu
 249
 250 #endif  // GPU_COMMAND_BUFFER_CLIENT_PROGRAM_INFO_MANAGER_H_