/****************************************************************************
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** Copyright (C) 2008-2012 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
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** This file is part of Qt 3D Studio.
**
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#pragma once
#ifndef QT3DS_RENDER_EXAMPLE_TOOLS_H
#define QT3DS_RENDER_EXAMPLE_TOOLS_H
#include "Qt3DSRenderExample.h"

namespace qt3ds {
namespace render {

    class NVRenderExampleTools
    {
    public:
        static const char *getSimpleVertShader()
        {
            return "uniform mat4 mat_mvp;\n"
                   "attribute vec3 attr_pos;			// Vertex pos\n"
                   "attribute vec3 attr_norm;			// Vertex pos\n"
                   "attribute vec2 attr_uv; 			// UV coords\n"
                   "varying vec4 color_to_add;\n"
                   "varying vec2 uv_coords;\n"
                   "void main()\n"
                   "{\n"
                   "gl_Position = mat_mvp * vec4(attr_pos, 1.0);\n"
                   "color_to_add.xyz = attr_norm * attr_norm;\n"
                   "color_to_add.a = 1.0;\n"
                   "uv_coords = attr_uv;\n"
                   "}\n";
        }

        static const char *getSimpleFragShader()
        {
            return "precision mediump sampler2D;\n"
                   "precision mediump float;\n"
                   "varying vec4 color_to_add;\n"
                   "void main()\n"
                   "{\n"
                   "gl_FragColor=color_to_add;\n"
                   "}\n";
        }

        static const char *getSimpleFragShaderTex()
        {
            return "precision mediump sampler2D;\n"
                   "precision mediump float;\n"
                   "uniform sampler2D image0;\n"
                   "varying vec2 uv_coords;\n"
                   "void main()\n"
                   "{\n"
                   "gl_FragColor=vec4(texture2D( image0, uv_coords ).xyz, 1.0 );\n"
                   "}\n";
        }

        static void createBox(NVRenderContext &context, NVRenderVertexBuffer *&outVertexBuffer,
                              NVRenderIndexBuffer *&outIndexBuffer, bool releaseMemory = true);
        static NVRenderVertFragShader *createSimpleShader(NVRenderContext &context);
        static NVRenderVertFragShader *createSimpleShaderTex(NVRenderContext &context);
    };
}
}

#endif