/*
 * Copyright 2013 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

//--------------------------------------------------------------------------------
// MoreTeapotsRenderer.h
// Renderer for teapots
//--------------------------------------------------------------------------------
#ifndef _MoreTeapotsRenderer_H
#define _MoreTeapotsRenderer_H

//--------------------------------------------------------------------------------
// Include files
//--------------------------------------------------------------------------------
#include <jni.h>
#include <errno.h>

#include <vector>

#include <EGL/egl.h>
#include <GLES/gl.h>

#include <android/sensor.h>
#include <android/log.h>
#include <android_native_app_glue.h>
#include <android/native_window_jni.h>
#include <cpu-features.h>

#define CLASS_NAME "android/app/NativeActivity"
#define APPLICATION_CLASS_NAME "com/sample/moreteapotss/MoreTeapotsApplication"

#include "NDKHelper.h"

#define BUFFER_OFFSET(i) ((char *)NULL + (i))

struct TEAPOT_VERTEX
{
    float pos[3];
    float normal[3];
};

enum SHADER_ATTRIBUTES
{
    ATTRIB_VERTEX, ATTRIB_NORMAL, ATTRIB_COLOR, ATTRIB_UV
};

struct SHADER_PARAMS
{
    GLuint program_;
    GLuint light0_;
    GLuint material_diffuse_;
    GLuint material_ambient_;
    GLuint material_specular_;

    GLuint matrix_projection_;
    GLuint matrix_view_;
};

struct TEAPOT_MATERIALS
{
    float specular_color[4];
    float ambient_color[3];
};

class MoreTeapotsRenderer
{
    int32_t num_indices_;
    int32_t num_vertices_;
    GLuint ibo_;
    GLuint vbo_;
    GLuint ubo_;

    SHADER_PARAMS shader_param_;
    bool LoadShaders( SHADER_PARAMS* params,
            const char* strVsh,
            const char* strFsh );
    bool LoadShadersES3( SHADER_PARAMS* params,
            const char* strVsh,
            const char* strFsh,
            std::map<std::string, std::string>&shaderParameters );

    ndk_helper::Mat4 mat_projection_;
    ndk_helper::Mat4 mat_view_;
    std::vector<ndk_helper::Mat4> vec_mat_models_;
    std::vector<ndk_helper::Vec3> vec_colors_;
    std::vector<ndk_helper::Vec2> vec_rotations_;
    std::vector<ndk_helper::Vec2> vec_current_rotations_;

    ndk_helper::TapCamera* camera_;

    int32_t teapot_x_;
    int32_t teapot_y_;
    int32_t teapot_z_;
    int32_t ubo_matrix_stride_;
    int32_t ubo_vector_stride_;
    bool geometry_instancing_support_;
    bool arb_support_;

    std::string ToString( const int32_t i );
public:
    MoreTeapotsRenderer();
    virtual ~MoreTeapotsRenderer();
    void Init( const int32_t numX,
            const int32_t numY,
            const int32_t numZ );
    void Render();
    void Update( float dTime );
    bool Bind( ndk_helper::TapCamera* camera );
    void Unload();
    void UpdateViewport();
};

#endif