// Copyright 2014 Intel Corporation All Rights Reserved
//
// Intel makes no representations about the suitability of this software for any purpose.  
// THIS SOFTWARE IS PROVIDED ""AS IS."" INTEL SPECIFICALLY DISCLAIMS ALL WARRANTIES,
// EXPRESS OR IMPLIED, AND ALL LIABILITY, INCLUDING CONSEQUENTIAL AND OTHER INDIRECT DAMAGES,
// FOR THE USE OF THIS SOFTWARE, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PROPRIETARY
// RIGHTS, AND INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
// Intel does not assume any responsibility for any errors which may appear in this software
// nor any responsibility to update it.

#pragma once

#include <d3d12.h>
#include <d3dx12.h>
#include <d3d11.h>

void GenerateMips2D_XXXX8(D3D11_SUBRESOURCE_DATA* subresources, size_t widthLevel0, size_t heightLevel0, size_t mipLevels);

// Will generate mips (into subresources array) is mipLevels > 0
void FillNoise2D_RGBA8(D3D11_SUBRESOURCE_DATA* subresources, size_t width, size_t height, size_t mipLevels,
                       float seed, float persistence, float noiseScale, float noiseStrength,
					   float redScale = 255.0f, float greenScale = 255.0f, float blueScale = 255.0f);


// Helper for uploading initial texture data in D3D12; as with D3D11, one initialData structure per subresource
// Creates temporary resources internally and syncs with GPU... this is a convenience function for init time!
// NOTE: Currently textures with mip chain must be pow2!
// Transitions resource from D3D12_RESOURCE_USAGE_INITIAL to "stateAfter"
void InitializeTexture2D(
    ID3D12Device* device, 
    ID3D12CommandQueue* cmdQueue,
    ID3D12Resource* texture, 
    const D3D12_RESOURCE_DESC* desc, 
    UINT bytesPerPixel, 
    const D3D11_SUBRESOURCE_DATA* initialData,
    D3D12_RESOURCE_STATES stateAfter = D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE);

// NOTE: This function very much only works for the specific path(s) that we use it for!
// Not very general-purpose yet.
HRESULT CreateTexture2DFromDDS_XXXX8(
    ID3D12Device* device, 
    ID3D12CommandQueue* cmdQueue,
    ID3D12Resource** texture, 
    const char* fileName,
    DXGI_FORMAT format, // Should match file otherwise expect explosion/wackiness...
    D3D12_RESOURCE_STATES stateAfter = D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE);