/*     Copyright 2015-2018 Egor Yusov
 *  
 *  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
 * 
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF ANY PROPRIETARY RIGHTS.
 *
 *  In no event and under no legal theory, whether in tort (including negligence), 
 *  contract, or otherwise, unless required by applicable law (such as deliberate 
 *  and grossly negligent acts) or agreed to in writing, shall any Contributor be
 *  liable for any damages, including any direct, indirect, special, incidental, 
 *  or consequential damages of any character arising as a result of this License or 
 *  out of the use or inability to use the software (including but not limited to damages 
 *  for loss of goodwill, work stoppage, computer failure or malfunction, or any and 
 *  all other commercial damages or losses), even if such Contributor has been advised 
 *  of the possibility of such damages.
 */

#include "pch.h"

#if PLATFORM_WIN32

#   ifndef GLEW_STATIC
#       define GLEW_STATIC // Must be defined to use static version of glew
#   endif
#   include "GL/glew.h"
 #elif PLATFORM_LINUX

#   ifndef GLEW_STATIC
#       define GLEW_STATIC // Must be defined to use static version of glew
#   endif
#   ifndef GLEW_NO_GLU
#       define GLEW_NO_GLU
#   endif

#   include "GL/glew.h"

 // Undefine beautiful defines from GL/glx.h -> X11/Xlib.h
#   ifdef Bool
#       undef Bool
#   endif
#   ifdef True
#       undef True
#   endif
#   ifdef False
#       undef False
#   endif
#   ifdef Status
#       undef Status
#   endif
#   ifdef Success
#       undef Success
#   endif

#elif PLATFORM_MACOS

#   ifndef GLEW_STATIC
#       define GLEW_STATIC // Must be defined to use static version of glew
#   endif
#   ifndef GLEW_NO_GLU
#       define GLEW_NO_GLU
#   endif

#   include "GL/glew.h"

#elif PLATFORM_ANDROID

#   include <GLES3/gl3.h>
#   include <GLES3/gl3ext.h>

#elif PLATFORM_IOS

#   include <OpenGLES/ES3/gl.h>

#else
#   error Unsupported platform
#endif

#include "RenderDeviceGL.h"
#include "TextureGL.h"
#include "BufferGL.h"

#include "Errors.h"
#include "TestCreateObjFromNativeResGL.h"

using namespace Diligent;

void TestCreateObjFromNativeResGL::CreateTexture(Diligent::ITexture *pTexture)
{
#if PLATFORM_WIN32 || PLATFORM_LINUX || PLATFORM_ANDROID
    RefCntAutoPtr<IRenderDeviceGL> pDeviceGL(m_pDevice, IID_RenderDeviceGL);
    const auto &SrcTexDesc = pTexture->GetDesc();
    if (SrcTexDesc.Type == RESOURCE_DIM_TEX_CUBE_ARRAY)
        return;

    RefCntAutoPtr<ITextureGL> pTextureGL(pTexture, IID_TextureGL);
    auto GLHandle = pTextureGL->GetGLTextureHandle();
    RefCntAutoPtr<ITexture> pAttachedTexture;
    auto TmpTexDesc = SrcTexDesc;
    TmpTexDesc.Width = 0;
    TmpTexDesc.Height = 0;
    TmpTexDesc.MipLevels = 0;
    TmpTexDesc.Format = TEX_FORMAT_UNKNOWN;
    pDeviceGL->CreateTextureFromGLHandle(GLHandle, TmpTexDesc, RESOURCE_STATE_UNKNOWN, &pAttachedTexture);
    ++m_NumTexturesCreated;
    
    auto TestTexDesc = pAttachedTexture->GetDesc();
    if (m_pDevice->GetTextureFormatInfo(SrcTexDesc.Format).IsTypeless)
        TestTexDesc.Format = SrcTexDesc.Format;

    VERIFY_EXPR(TestTexDesc == SrcTexDesc);
    RefCntAutoPtr<ITextureGL> pAttachedTextureGL(pAttachedTexture, IID_TextureGL);
    VERIFY_EXPR(pAttachedTextureGL->GetGLTextureHandle() == GLHandle);
    VERIFY_EXPR(pAttachedTextureGL->GetBindTarget() == pTextureGL->GetBindTarget());
    VERIFY_EXPR( reinterpret_cast<size_t>(pAttachedTextureGL->GetNativeHandle()) == GLHandle);
#endif
}

void TestCreateObjFromNativeResGL::CreateBuffer(Diligent::IBuffer *pBuffer)
{
#if PLATFORM_WIN32 || PLATFORM_LINUX || PLATFORM_ANDROID
    RefCntAutoPtr<IRenderDeviceGL> pDeviceGL(m_pDevice, IID_RenderDeviceGL);
    const auto &SrcBuffDesc = pBuffer->GetDesc();
    RefCntAutoPtr<IBufferGL> pBufferGL(pBuffer, IID_BufferGL);
    auto GLBufferHandle = pBufferGL->GetGLBufferHandle();
  
    RefCntAutoPtr<IBuffer> pBufferFromNativeGLHandle;
    pDeviceGL->CreateBufferFromGLHandle(GLBufferHandle, SrcBuffDesc, RESOURCE_STATE_UNKNOWN, &pBufferFromNativeGLHandle);
    ++m_NumBuffersCreated;
    
    const auto &TestBufferDesc = pBufferFromNativeGLHandle->GetDesc();
    VERIFY_EXPR(TestBufferDesc == SrcBuffDesc);

    RefCntAutoPtr<IBufferGL> pTestBufferGL(pBufferFromNativeGLHandle, IID_BufferGL);
    VERIFY_EXPR(pTestBufferGL->GetGLBufferHandle() == GLBufferHandle);
    VERIFY_EXPR( reinterpret_cast<size_t>(pTestBufferGL->GetNativeHandle()) == GLBufferHandle);
#endif
}
