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// Copyright (c) 2010 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 <string>
#include "gpu/command_buffer/service/gles2_cmd_validation.h"
namespace gpu {
namespace gles2 {
// FeatureInfo records the features that are available for a particular context.
class FeatureInfo {
public:
struct FeatureFlags {
FeatureFlags()
: chromium_framebuffer_multisample(false),
oes_standard_derivatives(false),
npot_ok(false),
enable_texture_float_linear(false),
enable_texture_half_float_linear(false),
chromium_webglsl(false) {
}
bool chromium_framebuffer_multisample;
bool oes_standard_derivatives;
bool npot_ok;
bool enable_texture_float_linear;
bool enable_texture_half_float_linear;
bool chromium_webglsl;
};
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);
// Turns on certain features if they can be turned on. NULL turns on
// all available features.
void AddFeatures(const char* desired_features);
const Validators* validators() const {
return &validators_;
}
const std::string& extensions() const {
return extensions_;
}
const FeatureFlags& feature_flags() const {
return feature_flags_;
}
private:
void AddExtensionString(const std::string& str);
Validators validators_;
// The extensions string returned by glGetString(GL_EXTENSIONS);
std::string extensions_;
// Flags for some features
FeatureFlags feature_flags_;
DISALLOW_COPY_AND_ASSIGN(FeatureInfo);
};
} // namespace gles2
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_SERVICE_FEATURE_INFO_H_
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