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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef GPU_COMMAND_BUFFER_SERVICE_FEATURE_INFO_H_
#define GPU_COMMAND_BUFFER_SERVICE_FEATURE_INFO_H_
#include <set>
#include <string>
#include "base/hash_tables.h"
#include "base/memory/ref_counted.h"
#include "base/sys_info.h"
#include "gpu/command_buffer/service/gles2_cmd_decoder.h"
#include "gpu/command_buffer/service/gles2_cmd_validation.h"
#include "gpu/config/gpu_driver_bug_workaround_type.h"
#include "gpu/gpu_export.h"
class CommandLine;
namespace gpu {
namespace gles2 {
// FeatureInfo records the features that are available for a ContextGroup.
class GPU_EXPORT FeatureInfo : public base::RefCounted<FeatureInfo> {
public:
struct FeatureFlags {
FeatureFlags();
bool chromium_framebuffer_multisample;
bool oes_standard_derivatives;
bool oes_egl_image_external;
bool npot_ok;
bool enable_texture_float_linear;
bool enable_texture_half_float_linear;
bool chromium_stream_texture;
bool angle_translated_shader_source;
bool angle_pack_reverse_row_order;
bool arb_texture_rectangle;
bool angle_instanced_arrays;
bool occlusion_query_boolean;
bool use_arb_occlusion_query2_for_occlusion_query_boolean;
bool use_arb_occlusion_query_for_occlusion_query_boolean;
bool native_vertex_array_object;
bool enable_shader_name_hashing;
bool enable_samplers;
bool ext_draw_buffers;
};
struct Workarounds {
Workarounds();
#define GPU_OP(type, name) bool name;
GPU_DRIVER_BUG_WORKAROUNDS(GPU_OP)
#undef GPU_OP
// Note: 0 here means use driver limit.
GLint max_texture_size;
GLint max_cube_map_texture_size;
};
FeatureInfo();
// If allowed features = NULL or "*", all features are allowed. Otherwise
// only features that match the strings in allowed_features are allowed.
bool Initialize(const char* allowed_features);
bool Initialize(const DisallowedFeatures& disallowed_features,
const char* allowed_features);
// Turns on certain features if they can be turned on.
void AddFeatures(const CommandLine& command_line);
const Validators* validators() const {
return &validators_;
}
const ValueValidator<GLenum>& GetTextureFormatValidator(GLenum format) {
return texture_format_validators_[format];
}
const std::string& extensions() const {
return extensions_;
}
const FeatureFlags& feature_flags() const {
return feature_flags_;
}
const Workarounds& workarounds() const {
return workarounds_;
}
private:
friend class base::RefCounted<FeatureInfo>;
friend class BufferManagerClientSideArraysTest;
friend class GLES2DecoderTestBase;
typedef base::hash_map<GLenum, ValueValidator<GLenum> > ValidatorMap;
ValidatorMap texture_format_validators_;
~FeatureInfo();
void AddExtensionString(const std::string& str);
Validators validators_;
DisallowedFeatures disallowed_features_;
// The extensions string returned by glGetString(GL_EXTENSIONS);
std::string extensions_;
// Flags for some features
FeatureFlags feature_flags_;
// Flags for Workarounds.
Workarounds workarounds_;
DISALLOW_COPY_AND_ASSIGN(FeatureInfo);
};
} // namespace gles2
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_SERVICE_FEATURE_INFO_H_
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