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.
5 #ifndef GPU_COMMAND_BUFFER_SERVICE_FEATURE_INFO_H_
6 #define GPU_COMMAND_BUFFER_SERVICE_FEATURE_INFO_H_
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"
25 // FeatureInfo records the features that are available for a ContextGroup.
26 class GPU_EXPORT FeatureInfo
: public base::RefCounted
<FeatureInfo
> {
31 bool chromium_color_buffer_float_rgba
;
32 bool chromium_color_buffer_float_rgb
;
33 bool chromium_framebuffer_multisample
;
34 bool chromium_sync_query
;
35 // Use glBlitFramebuffer() and glRenderbufferStorageMultisample() with
36 // GL_EXT_framebuffer_multisample-style semantics, since they are exposed
37 // as core GL functions on this implementation.
38 bool use_core_framebuffer_multisample
;
39 bool multisampled_render_to_texture
;
40 // Use the IMG GLenum values and functions rather than EXT.
41 bool use_img_for_multisampled_render_to_texture
;
42 bool oes_standard_derivatives
;
43 bool oes_egl_image_external
;
45 bool oes_compressed_etc1_rgb8_texture
;
46 bool packed_depth24_stencil8
;
48 bool enable_texture_float_linear
;
49 bool enable_texture_half_float_linear
;
50 bool angle_translated_shader_source
;
51 bool angle_pack_reverse_row_order
;
52 bool arb_texture_rectangle
;
53 bool angle_instanced_arrays
;
54 bool occlusion_query_boolean
;
55 bool use_arb_occlusion_query2_for_occlusion_query_boolean
;
56 bool use_arb_occlusion_query_for_occlusion_query_boolean
;
57 bool native_vertex_array_object
;
58 bool ext_texture_format_bgra8888
;
59 bool enable_shader_name_hashing
;
61 bool ext_draw_buffers
;
64 bool ext_shader_texture_lod
;
65 bool use_async_readpixels
;
66 bool map_buffer_range
;
67 bool ext_discard_framebuffer
;
68 bool angle_depth_texture
;
71 bool angle_texture_usage
;
72 bool ext_texture_storage
;
73 bool chromium_path_rendering
;
74 bool blend_equation_advanced
;
75 bool blend_equation_advanced_coherent
;
82 #define GPU_OP(type, name) bool name;
83 GPU_DRIVER_BUG_WORKAROUNDS(GPU_OP
)
86 // Note: 0 here means use driver limit.
87 GLint max_texture_size
;
88 GLint max_cube_map_texture_size
;
89 GLint max_fragment_uniform_vectors
;
90 GLint max_varying_vectors
;
91 GLint max_vertex_uniform_vectors
;
94 // Constructor with workarounds taken from the current process's CommandLine
97 // Constructor with workarounds taken from |command_line|
98 FeatureInfo(const base::CommandLine
& command_line
);
100 // Initializes the feature information. Needs a current GL context.
102 bool Initialize(const DisallowedFeatures
& disallowed_features
);
104 const Validators
* validators() const {
108 const ValueValidator
<GLenum
>& GetTextureFormatValidator(GLenum format
) {
109 return texture_format_validators_
[format
];
112 const std::string
& extensions() const {
116 const FeatureFlags
& feature_flags() const {
117 return feature_flags_
;
120 const Workarounds
& workarounds() const {
125 friend class base::RefCounted
<FeatureInfo
>;
126 friend class BufferManagerClientSideArraysTest
;
128 typedef base::hash_map
<GLenum
, ValueValidator
<GLenum
> > ValidatorMap
;
129 ValidatorMap texture_format_validators_
;
133 void AddExtensionString(const char* s
);
134 void InitializeBasicState(const base::CommandLine
& command_line
);
135 void InitializeFeatures();
137 Validators validators_
;
139 DisallowedFeatures disallowed_features_
;
141 // The extensions string returned by glGetString(GL_EXTENSIONS);
142 std::string extensions_
;
144 // Flags for some features
145 FeatureFlags feature_flags_
;
147 // Flags for Workarounds.
148 Workarounds workarounds_
;
150 DISALLOW_COPY_AND_ASSIGN(FeatureInfo
);
156 #endif // GPU_COMMAND_BUFFER_SERVICE_FEATURE_INFO_H_