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_SERVICE_FEATURE_INFO_H_ 6 #define GPU_COMMAND_BUFFER_SERVICE_FEATURE_INFO_H_ 7 8 #include <set> 9 #include <string> 10 #include "base/containers/hash_tables.h" 11 #include "base/memory/ref_counted.h" 12 #include "base/sys_info.h" 13 #include "gpu/command_buffer/service/gles2_cmd_decoder.h" 14 #include "gpu/command_buffer/service/gles2_cmd_validation.h" 15 #include "gpu/config/gpu_driver_bug_workaround_type.h" 16 #include "gpu/gpu_export.h" 17 18 class CommandLine; 19 20 namespace gpu { 21 namespace gles2 { 22 23 // FeatureInfo records the features that are available for a ContextGroup. 24 class GPU_EXPORT FeatureInfo : public base::RefCounted<FeatureInfo> { 25 public: 26 struct FeatureFlags { 27 FeatureFlags(); 28 29 bool chromium_framebuffer_multisample; 30 bool multisampled_render_to_texture; 31 // Use the IMG GLenum values and functions rather than EXT. 32 bool use_img_for_multisampled_render_to_texture; 33 bool oes_standard_derivatives; 34 bool oes_egl_image_external; 35 bool npot_ok; 36 bool enable_texture_float_linear; 37 bool enable_texture_half_float_linear; 38 bool chromium_stream_texture; 39 bool angle_translated_shader_source; 40 bool angle_pack_reverse_row_order; 41 bool arb_texture_rectangle; 42 bool angle_instanced_arrays; 43 bool occlusion_query_boolean; 44 bool use_arb_occlusion_query2_for_occlusion_query_boolean; 45 bool use_arb_occlusion_query_for_occlusion_query_boolean; 46 bool native_vertex_array_object; 47 bool enable_shader_name_hashing; 48 bool enable_samplers; 49 bool ext_draw_buffers; 50 bool ext_frag_depth; 51 bool use_async_readpixels; 52 }; 53 54 struct Workarounds { 55 Workarounds(); 56 57 #define GPU_OP(type, name) bool name; 58 GPU_DRIVER_BUG_WORKAROUNDS(GPU_OP) 59 #undef GPU_OP 60 61 // Note: 0 here means use driver limit. 62 GLint max_texture_size; 63 GLint max_cube_map_texture_size; 64 }; 65 66 FeatureInfo(); 67 68 // If allowed features = NULL or "*", all features are allowed. Otherwise 69 // only features that match the strings in allowed_features are allowed. 70 bool Initialize(const char* allowed_features); 71 bool Initialize(const DisallowedFeatures& disallowed_features, 72 const char* allowed_features); 73 74 // Turns on certain features if they can be turned on. 75 void AddFeatures(const CommandLine& command_line); 76 77 const Validators* validators() const { 78 return &validators_; 79 } 80 81 const ValueValidator<GLenum>& GetTextureFormatValidator(GLenum format) { 82 return texture_format_validators_[format]; 83 } 84 85 const std::string& extensions() const { 86 return extensions_; 87 } 88 89 const FeatureFlags& feature_flags() const { 90 return feature_flags_; 91 } 92 93 const Workarounds& workarounds() const { 94 return workarounds_; 95 } 96 97 private: 98 friend class base::RefCounted<FeatureInfo>; 99 friend class BufferManagerClientSideArraysTest; 100 friend class GLES2DecoderTestBase; 101 102 typedef base::hash_map<GLenum, ValueValidator<GLenum> > ValidatorMap; 103 ValidatorMap texture_format_validators_; 104 105 ~FeatureInfo(); 106 107 void AddExtensionString(const std::string& str); 108 109 Validators validators_; 110 111 DisallowedFeatures disallowed_features_; 112 113 // The extensions string returned by glGetString(GL_EXTENSIONS); 114 std::string extensions_; 115 116 // Flags for some features 117 FeatureFlags feature_flags_; 118 119 // Flags for Workarounds. 120 Workarounds workarounds_; 121 122 DISALLOW_COPY_AND_ASSIGN(FeatureInfo); 123 }; 124 125 } // namespace gles2 126 } // namespace gpu 127 128 #endif // GPU_COMMAND_BUFFER_SERVICE_FEATURE_INFO_H_ 129
