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// Copyright (c) 2015 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_SAMPLER_MANAGER_H_
#define GPU_COMMAND_BUFFER_SERVICE_SAMPLER_MANAGER_H_
#include <vector>
#include "base/containers/hash_tables.h"
#include "base/logging.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "gpu/command_buffer/service/feature_info.h"
#include "gpu/command_buffer/service/gl_utils.h"
#include "gpu/gpu_gles2_export.h"
namespace gpu {
namespace gles2 {
class SamplerManager;
struct SamplerState {
SamplerState();
GLenum min_filter;
GLenum mag_filter;
GLenum wrap_r;
GLenum wrap_s;
GLenum wrap_t;
GLenum compare_func;
GLenum compare_mode;
GLfloat max_lod;
GLfloat min_lod;
};
class GPU_GLES2_EXPORT Sampler : public base::RefCounted<Sampler> {
public:
Sampler(SamplerManager* manager, GLuint client_id, GLuint service_id);
GLuint client_id() const {
return client_id_;
}
GLuint service_id() const {
return service_id_;
}
const SamplerState& sampler_state() const {
return sampler_state_;
}
// Sampler parameters
GLenum min_filter() const {
return sampler_state_.min_filter;
}
GLenum mag_filter() const {
return sampler_state_.mag_filter;
}
GLenum wrap_r() const {
return sampler_state_.wrap_r;
}
GLenum wrap_s() const {
return sampler_state_.wrap_s;
}
GLenum wrap_t() const {
return sampler_state_.wrap_t;
}
GLenum compare_func() const {
return sampler_state_.compare_func;
}
GLenum compare_mode() const {
return sampler_state_.compare_mode;
}
GLfloat max_lod() const {
return sampler_state_.max_lod;
}
GLfloat min_lod() const {
return sampler_state_.min_lod;
}
bool IsDeleted() const {
return deleted_;
}
protected:
virtual ~Sampler();
SamplerManager* manager() const {
return manager_;
}
void MarkAsDeleted() {
deleted_ = true;
}
private:
friend class SamplerManager;
friend class base::RefCounted<Sampler>;
// Sets a sampler parameter.
// Returns GL_NO_ERROR on success. Otherwise the error to generate.
GLenum SetParameteri(
const FeatureInfo* feature_info, GLenum pname, GLint param);
GLenum SetParameterf(
const FeatureInfo* feature_info, GLenum pname, GLfloat param);
// The manager that owns this Sampler.
SamplerManager* manager_;
GLuint client_id_;
GLuint service_id_;
// Sampler parameters.
SamplerState sampler_state_;
// True if deleted.
bool deleted_;
};
// This class keeps track of the samplers and their state.
class GPU_GLES2_EXPORT SamplerManager {
public:
SamplerManager(FeatureInfo* feature_info);
~SamplerManager();
// Must call before destruction.
void Destroy(bool have_context);
// Creates a Sampler for the given sampler.
Sampler* CreateSampler(GLuint client_id, GLuint service_id);
// Gets the Sampler info for the given sampler.
Sampler* GetSampler(GLuint client_id);
// Removes a Sampler info for the given sampler.
void RemoveSampler(GLuint client_id);
// Sets a sampler parameter of a Sampler.
// Returns GL_NO_ERROR on success. Otherwise the error to generate.
void SetParameteri(
const char* function_name, ErrorState* error_state,
Sampler* sampler, GLenum pname, GLint param);
void SetParameterf(
const char* function_name, ErrorState* error_state,
Sampler* sampler, GLenum pname, GLfloat param);
private:
friend class Sampler;
scoped_refptr<FeatureInfo> feature_info_;
// Info for each sampler in the system.
typedef base::hash_map<GLuint, scoped_refptr<Sampler> > SamplerMap;
SamplerMap samplers_;
bool have_context_;
DISALLOW_COPY_AND_ASSIGN(SamplerManager);
};
} // namespace gles2
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_SERVICE_SAMPLER_MANAGER_H_