/*

  Simple DirectMedia Layer

  Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>

  This software is provided 'as-is', without any express or implied

  warranty.  In no event will the authors be held liable for any damages

  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,

  including commercial applications, and to alter it and redistribute it

  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not

     claim that you wrote the original software. If you use this software

     in a product, an acknowledgment in the product documentation would be

     appreciated but is not required.

  2. Altered source versions must be plainly marked as such, and must not be

     misrepresented as being the original software.

  3. This notice may not be removed or altered from any source distribution.

*/

#include "SDL_config.h"

#if SDL_VIDEO_RENDER_D3D11 && !SDL_RENDER_DISABLED

#ifdef __WINRT__

#include <windows.ui.core.h>

#include <windows.foundation.h>

#if WINAPI_FAMILY == WINAPI_FAMILY_APP

#include <windows.ui.xaml.media.dxinterop.h>

#endif

#endif

extern "C" {

#include "../../core/windows/SDL_windows.h"

#include "SDL_hints.h"

#include "SDL_system.h"

#include "SDL_syswm.h"

#include "../SDL_sysrender.h"

#include "../../video/SDL_sysvideo.h"

}

#include <string>

#include <vector>

#include <D3D11_1.h>

#include <DirectXMath.h>

#include <wrl/client.h>

using namespace DirectX;

using namespace Microsoft::WRL;

using namespace std;

#ifdef __WINRT__

using namespace Windows::Graphics::Display;

using namespace Windows::UI::Core;

#endif

/* Texture sampling types */

static const D3D11_FILTER SDL_D3D11_NEAREST_PIXEL_FILTER = D3D11_FILTER_MIN_MAG_MIP_POINT;

static const D3D11_FILTER SDL_D3D11_LINEAR_FILTER = D3D11_FILTER_MIN_MAG_MIP_LINEAR;

/* Vertex shader, common values */

struct VertexShaderConstants

{

    DirectX::XMFLOAT4X4 model;

    DirectX::XMFLOAT4X4 projectionAndView;

};

/* Per-vertex data */

struct VertexPositionColor

{

    DirectX::XMFLOAT3 pos;

    DirectX::XMFLOAT2 tex;

    DirectX::XMFLOAT4 color;

};

/* Per-texture data */

typedef struct

{

    Microsoft::WRL::ComPtr<ID3D11Texture2D> mainTexture;

    Microsoft::WRL::ComPtr<ID3D11ShaderResourceView> mainTextureResourceView;

    Microsoft::WRL::ComPtr<ID3D11RenderTargetView> mainTextureRenderTargetView;

    SDL_PixelFormat * pixelFormat;

    Microsoft::WRL::ComPtr<ID3D11Texture2D> stagingTexture;

    DirectX::XMINT2 lockedTexturePosition;

    D3D11_FILTER scaleMode;

} D3D11_TextureData;

/* Private renderer data */

typedef struct

{

    Microsoft::WRL::ComPtr<ID3D11Device1> d3dDevice;

    Microsoft::WRL::ComPtr<ID3D11DeviceContext1> d3dContext;

    Microsoft::WRL::ComPtr<IDXGISwapChain1> swapChain;

    Microsoft::WRL::ComPtr<ID3D11RenderTargetView> mainRenderTargetView;

    Microsoft::WRL::ComPtr<ID3D11RenderTargetView> currentOffscreenRenderTargetView;

    Microsoft::WRL::ComPtr<ID3D11InputLayout> inputLayout;

    Microsoft::WRL::ComPtr<ID3D11Buffer> vertexBuffer;

    Microsoft::WRL::ComPtr<ID3D11VertexShader> vertexShader;

    Microsoft::WRL::ComPtr<ID3D11PixelShader> texturePixelShader;

    Microsoft::WRL::ComPtr<ID3D11PixelShader> colorPixelShader;

    Microsoft::WRL::ComPtr<ID3D11BlendState> blendModeBlend;

    Microsoft::WRL::ComPtr<ID3D11BlendState> blendModeAdd;

    Microsoft::WRL::ComPtr<ID3D11BlendState> blendModeMod;

    Microsoft::WRL::ComPtr<ID3D11SamplerState> nearestPixelSampler;

    Microsoft::WRL::ComPtr<ID3D11SamplerState> linearSampler;

    D3D_FEATURE_LEVEL featureLevel;

    // Rasterizers:

    // If this list starts to get unwieldy, then consider using a map<> of them.

    Microsoft::WRL::ComPtr<ID3D11RasterizerState> mainRasterizer;

    Microsoft::WRL::ComPtr<ID3D11RasterizerState> clippedRasterizer;

    // Vertex buffer constants:

    VertexShaderConstants vertexShaderConstantsData;

    Microsoft::WRL::ComPtr<ID3D11Buffer> vertexShaderConstants;

    // Cached renderer properties.

    DirectX::XMFLOAT2 windowSizeInDIPs;

    DirectX::XMFLOAT2 renderTargetSize;

    Windows::Graphics::Display::DisplayOrientations orientation;

    // Transform used for display orientation.

    DirectX::XMFLOAT4X4 orientationTransform3D;

} D3D11_RenderData;

/* Direct3D 11.x shaders

   SDL's shaders are compiled into SDL itself, to simplify distribution.

   All Direct3D 11.x shaders were compiled with the following:

   fxc /E"main" /T "<TYPE>" /Fo"<OUTPUT FILE>" "<INPUT FILE>"

     Variables:

     - <TYPE>: the type of shader.  A table of utilized shader types is

       listed below.

     - <OUTPUT FILE>: where to store compiled output

     - <INPUT FILE>: where to read shader source code from

     Shader types:

     - ps_4_0_level_9_1: Pixel shader for Windows 8+, including Windows RT

     - vs_4_0_level_9_1: Vertex shader for Windows 8+, including Windows RT

     - ps_4_0_level_9_3: Pixel shader for Windows Phone 8

     - vs_4_0_level_9_3: Vertex shader for Windows Phone 8

   Shader object code was converted to a list of DWORDs via the following

   *nix style command (available separately from Windows + MSVC):

     hexdump -v -e '6/4 "0x%08.8x, " "\n"' <FILE>

  */

#if WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP

#define D3D11_USE_SHADER_MODEL_4_0_level_9_3

#else

#define D3D11_USE_SHADER_MODEL_4_0_level_9_1

#endif

/* The texture-rendering pixel shader:

    --- D3D11_PixelShader_Textures.hlsl ---

    Texture2D theTexture : register(t0);

    SamplerState theSampler : register(s0);

    struct PixelShaderInput

    {

        float4 pos : SV_POSITION;

        float2 tex : TEXCOORD0;

        float4 color : COLOR0;

    };

    float4 main(PixelShaderInput input) : SV_TARGET

    {

        return theTexture.Sample(theSampler, input.tex) * input.color;

    }

*/

#if defined(D3D11_USE_SHADER_MODEL_4_0_level_9_1)

static const DWORD D3D11_PixelShader_Textures[] = {

    0x43425844, 0x6299b59f, 0x155258f2, 0x873ab86a, 0xfcbb6dcd, 0x00000001,

    0x00000330, 0x00000006, 0x00000038, 0x000000c0, 0x0000015c, 0x000001d8,

    0x00000288, 0x000002fc, 0x396e6f41, 0x00000080, 0x00000080, 0xffff0200,

    0x00000058, 0x00000028, 0x00280000, 0x00280000, 0x00280000, 0x00240001,

    0x00280000, 0x00000000, 0xffff0200, 0x0200001f, 0x80000000, 0xb0030000,

    0x0200001f, 0x80000000, 0xb00f0001, 0x0200001f, 0x90000000, 0xa00f0800,

    0x03000042, 0x800f0000, 0xb0e40000, 0xa0e40800, 0x03000005, 0x800f0000,

    0x80e40000, 0xb0e40001, 0x02000001, 0x800f0800, 0x80e40000, 0x0000ffff,

    0x52444853, 0x00000094, 0x00000040, 0x00000025, 0x0300005a, 0x00106000,

    0x00000000, 0x04001858, 0x00107000, 0x00000000, 0x00005555, 0x03001062,

    0x00101032, 0x00000001, 0x03001062, 0x001010f2, 0x00000002, 0x03000065,

    0x001020f2, 0x00000000, 0x02000068, 0x00000001, 0x09000045, 0x001000f2,

    0x00000000, 0x00101046, 0x00000001, 0x00107e46, 0x00000000, 0x00106000,

    0x00000000, 0x07000038, 0x001020f2, 0x00000000, 0x00100e46, 0x00000000,

    0x00101e46, 0x00000002, 0x0100003e, 0x54415453, 0x00000074, 0x00000003,

    0x00000001, 0x00000000, 0x00000003, 0x00000001, 0x00000000, 0x00000000,

    0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,

    0x00000000, 0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000,

    0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,

    0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x46454452, 0x000000a8,

    0x00000000, 0x00000000, 0x00000002, 0x0000001c, 0xffff0400, 0x00000100,

    0x00000072, 0x0000005c, 0x00000003, 0x00000000, 0x00000000, 0x00000000,

    0x00000000, 0x00000001, 0x00000001, 0x00000067, 0x00000002, 0x00000005,

    0x00000004, 0xffffffff, 0x00000000, 0x00000001, 0x0000000d, 0x53656874,

    0x6c706d61, 0x74007265, 0x65546568, 0x72757478, 0x694d0065, 0x736f7263,

    0x2074666f, 0x20295228, 0x4c534c48, 0x61685320, 0x20726564, 0x706d6f43,

    0x72656c69, 0x332e3920, 0x32392e30, 0x312e3030, 0x34383336, 0xababab00,

    0x4e475349, 0x0000006c, 0x00000003, 0x00000008, 0x00000050, 0x00000000,

    0x00000001, 0x00000003, 0x00000000, 0x0000000f, 0x0000005c, 0x00000000,

    0x00000000, 0x00000003, 0x00000001, 0x00000303, 0x00000065, 0x00000000,

    0x00000000, 0x00000003, 0x00000002, 0x00000f0f, 0x505f5653, 0x5449534f,

    0x004e4f49, 0x43584554, 0x44524f4f, 0x4c4f4300, 0xab00524f, 0x4e47534f,

    0x0000002c, 0x00000001, 0x00000008, 0x00000020, 0x00000000, 0x00000000,

    0x00000003, 0x00000000, 0x0000000f, 0x545f5653, 0x45475241, 0xabab0054

};

#elif defined(D3D11_USE_SHADER_MODEL_4_0_level_9_3)

static const DWORD D3D11_PixelShader_Textures[] = {

    0x43425844, 0x5876569a, 0x01b6c87e, 0x8447454f, 0xc7f3ef10, 0x00000001,

    0x00000330, 0x00000006, 0x00000038, 0x000000c0, 0x0000015c, 0x000001d8,

    0x00000288, 0x000002fc, 0x396e6f41, 0x00000080, 0x00000080, 0xffff0200,

    0x00000058, 0x00000028, 0x00280000, 0x00280000, 0x00280000, 0x00240001,

    0x00280000, 0x00000000, 0xffff0201, 0x0200001f, 0x80000000, 0xb0030000,

    0x0200001f, 0x80000000, 0xb00f0001, 0x0200001f, 0x90000000, 0xa00f0800,

    0x03000042, 0x800f0000, 0xb0e40000, 0xa0e40800, 0x03000005, 0x800f0000,

    0x80e40000, 0xb0e40001, 0x02000001, 0x800f0800, 0x80e40000, 0x0000ffff,

    0x52444853, 0x00000094, 0x00000040, 0x00000025, 0x0300005a, 0x00106000,

    0x00000000, 0x04001858, 0x00107000, 0x00000000, 0x00005555, 0x03001062,

    0x00101032, 0x00000001, 0x03001062, 0x001010f2, 0x00000002, 0x03000065,

    0x001020f2, 0x00000000, 0x02000068, 0x00000001, 0x09000045, 0x001000f2,

    0x00000000, 0x00101046, 0x00000001, 0x00107e46, 0x00000000, 0x00106000,

    0x00000000, 0x07000038, 0x001020f2, 0x00000000, 0x00100e46, 0x00000000,

    0x00101e46, 0x00000002, 0x0100003e, 0x54415453, 0x00000074, 0x00000003,

    0x00000001, 0x00000000, 0x00000003, 0x00000001, 0x00000000, 0x00000000,

    0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,

    0x00000000, 0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000,

    0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,

    0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x46454452, 0x000000a8,

    0x00000000, 0x00000000, 0x00000002, 0x0000001c, 0xffff0400, 0x00000100,

    0x00000072, 0x0000005c, 0x00000003, 0x00000000, 0x00000000, 0x00000000,

    0x00000000, 0x00000001, 0x00000001, 0x00000067, 0x00000002, 0x00000005,

    0x00000004, 0xffffffff, 0x00000000, 0x00000001, 0x0000000d, 0x53656874,

    0x6c706d61, 0x74007265, 0x65546568, 0x72757478, 0x694d0065, 0x736f7263,

    0x2074666f, 0x20295228, 0x4c534c48, 0x61685320, 0x20726564, 0x706d6f43,

    0x72656c69, 0x332e3920, 0x32392e30, 0x312e3030, 0x34383336, 0xababab00,

    0x4e475349, 0x0000006c, 0x00000003, 0x00000008, 0x00000050, 0x00000000,

    0x00000001, 0x00000003, 0x00000000, 0x0000000f, 0x0000005c, 0x00000000,

    0x00000000, 0x00000003, 0x00000001, 0x00000303, 0x00000065, 0x00000000,

    0x00000000, 0x00000003, 0x00000002, 0x00000f0f, 0x505f5653, 0x5449534f,

    0x004e4f49, 0x43584554, 0x44524f4f, 0x4c4f4300, 0xab00524f, 0x4e47534f,

    0x0000002c, 0x00000001, 0x00000008, 0x00000020, 0x00000000, 0x00000000,

    0x00000003, 0x00000000, 0x0000000f, 0x545f5653, 0x45475241, 0xabab0054

};

#else

#error "An appropriate 'textures' pixel shader is not defined"

#endif

/* The color-only-rendering pixel shader:

   --- D3D11_PixelShader_Colors.hlsl ---

   struct PixelShaderInput

   {

       float4 pos : SV_POSITION;

       float2 tex : TEXCOORD0;

       float4 color : COLOR0;

   };

   float4 main(PixelShaderInput input) : SV_TARGET

   {

       return input.color;

   }

*/

#if defined(D3D11_USE_SHADER_MODEL_4_0_level_9_1)

static const DWORD D3D11_PixelShader_Colors[] = {

    0x43425844, 0xd74c28fe, 0xa1eb8804, 0x269d512a, 0x7699723d, 0x00000001,

    0x00000240, 0x00000006, 0x00000038, 0x00000084, 0x000000c4, 0x00000140,

    0x00000198, 0x0000020c, 0x396e6f41, 0x00000044, 0x00000044, 0xffff0200,

    0x00000020, 0x00000024, 0x00240000, 0x00240000, 0x00240000, 0x00240000,

    0x00240000, 0xffff0200, 0x0200001f, 0x80000000, 0xb00f0001, 0x02000001,

    0x800f0800, 0xb0e40001, 0x0000ffff, 0x52444853, 0x00000038, 0x00000040,

    0x0000000e, 0x03001062, 0x001010f2, 0x00000002, 0x03000065, 0x001020f2,

    0x00000000, 0x05000036, 0x001020f2, 0x00000000, 0x00101e46, 0x00000002,

    0x0100003e, 0x54415453, 0x00000074, 0x00000002, 0x00000000, 0x00000000,

    0x00000002, 0x00000000, 0x00000000, 0x00000000, 0x00000001, 0x00000000,

    0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,

    0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000002, 0x00000000,

    0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,

    0x00000000, 0x00000000, 0x46454452, 0x00000050, 0x00000000, 0x00000000,

    0x00000000, 0x0000001c, 0xffff0400, 0x00000100, 0x0000001c, 0x7263694d,

    0x666f736f, 0x52282074, 0x4c482029, 0x53204c53, 0x65646168, 0x6f432072,

    0x6c69706d, 0x39207265, 0x2e30332e, 0x30303239, 0x3336312e, 0xab003438,

    0x4e475349, 0x0000006c, 0x00000003, 0x00000008, 0x00000050, 0x00000000,

    0x00000001, 0x00000003, 0x00000000, 0x0000000f, 0x0000005c, 0x00000000,

    0x00000000, 0x00000003, 0x00000001, 0x00000003, 0x00000065, 0x00000000,

    0x00000000, 0x00000003, 0x00000002, 0x00000f0f, 0x505f5653, 0x5449534f,

    0x004e4f49, 0x43584554, 0x44524f4f, 0x4c4f4300, 0xab00524f, 0x4e47534f,

    0x0000002c, 0x00000001, 0x00000008, 0x00000020, 0x00000000, 0x00000000,

    0x00000003, 0x00000000, 0x0000000f, 0x545f5653, 0x45475241, 0xabab0054

};

#elif defined(D3D11_USE_SHADER_MODEL_4_0_level_9_3)

static const DWORD D3D11_PixelShader_Colors[] = {

    0x43425844, 0x93f6ccfc, 0x5f919270, 0x7a11aa4f, 0x9148e931, 0x00000001,

    0x00000240, 0x00000006, 0x00000038, 0x00000084, 0x000000c4, 0x00000140,

    0x00000198, 0x0000020c, 0x396e6f41, 0x00000044, 0x00000044, 0xffff0200,

    0x00000020, 0x00000024, 0x00240000, 0x00240000, 0x00240000, 0x00240000,

    0x00240000, 0xffff0201, 0x0200001f, 0x80000000, 0xb00f0001, 0x02000001,

    0x800f0800, 0xb0e40001, 0x0000ffff, 0x52444853, 0x00000038, 0x00000040,

    0x0000000e, 0x03001062, 0x001010f2, 0x00000002, 0x03000065, 0x001020f2,

    0x00000000, 0x05000036, 0x001020f2, 0x00000000, 0x00101e46, 0x00000002,

    0x0100003e, 0x54415453, 0x00000074, 0x00000002, 0x00000000, 0x00000000,

    0x00000002, 0x00000000, 0x00000000, 0x00000000, 0x00000001, 0x00000000,

    0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,

    0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000002, 0x00000000,

    0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,

    0x00000000, 0x00000000, 0x46454452, 0x00000050, 0x00000000, 0x00000000,

    0x00000000, 0x0000001c, 0xffff0400, 0x00000100, 0x0000001c, 0x7263694d,

    0x666f736f, 0x52282074, 0x4c482029, 0x53204c53, 0x65646168, 0x6f432072,

    0x6c69706d, 0x39207265, 0x2e30332e, 0x30303239, 0x3336312e, 0xab003438,

    0x4e475349, 0x0000006c, 0x00000003, 0x00000008, 0x00000050, 0x00000000,

    0x00000001, 0x00000003, 0x00000000, 0x0000000f, 0x0000005c, 0x00000000,

    0x00000000, 0x00000003, 0x00000001, 0x00000003, 0x00000065, 0x00000000,

    0x00000000, 0x00000003, 0x00000002, 0x00000f0f, 0x505f5653, 0x5449534f,

    0x004e4f49, 0x43584554, 0x44524f4f, 0x4c4f4300, 0xab00524f, 0x4e47534f,

    0x0000002c, 0x00000001, 0x00000008, 0x00000020, 0x00000000, 0x00000000,

    0x00000003, 0x00000000, 0x0000000f, 0x545f5653, 0x45475241, 0xabab0054

};

#else

#error "An appropriate 'colors' pixel shader is not defined."

#endif

/* The sole vertex shader:

   --- D3D11_VertexShader.hlsl ---

   #pragma pack_matrix( row_major )

   cbuffer VertexShaderConstants : register(b0)

   {

       matrix model;

       matrix projectionAndView;

   };

   struct VertexShaderInput

   {

       float3 pos : POSITION;

       float2 tex : TEXCOORD0;

       float4 color : COLOR0;

   };

   struct VertexShaderOutput

   {

       float4 pos : SV_POSITION;

       float2 tex : TEXCOORD0;

       float4 color : COLOR0;

   };

   VertexShaderOutput main(VertexShaderInput input)

   {

       VertexShaderOutput output;

       float4 pos = float4(input.pos, 1.0f);

       // Transform the vertex position into projected space.

       pos = mul(pos, model);

       pos = mul(pos, projectionAndView);

       output.pos = pos;

       // Pass through texture coordinates and color values without transformation

       output.tex = input.tex;

       output.color = input.color;

       return output;

   }

*/

#if defined(D3D11_USE_SHADER_MODEL_4_0_level_9_1)

static const DWORD D3D11_VertexShader[] = {

    0x43425844, 0x62dfae5f, 0x3e8bd8df, 0x9ec97127, 0x5044eefb, 0x00000001,

    0x00000598, 0x00000006, 0x00000038, 0x0000016c, 0x00000334, 0x000003b0,

    0x000004b4, 0x00000524, 0x396e6f41, 0x0000012c, 0x0000012c, 0xfffe0200,

    0x000000f8, 0x00000034, 0x00240001, 0x00300000, 0x00300000, 0x00240000,

    0x00300001, 0x00000000, 0x00010008, 0x00000000, 0x00000000, 0xfffe0200,

    0x0200001f, 0x80000005, 0x900f0000, 0x0200001f, 0x80010005, 0x900f0001,

    0x0200001f, 0x80020005, 0x900f0002, 0x03000005, 0x800f0000, 0x90550000,

    0xa0e40002, 0x04000004, 0x800f0000, 0x90000000, 0xa0e40001, 0x80e40000,

    0x04000004, 0x800f0000, 0x90aa0000, 0xa0e40003, 0x80e40000, 0x03000002,

    0x800f0000, 0x80e40000, 0xa0e40004, 0x03000005, 0x800f0001, 0x80550000,

    0xa0e40006, 0x04000004, 0x800f0001, 0x80000000, 0xa0e40005, 0x80e40001,

    0x04000004, 0x800f0001, 0x80aa0000, 0xa0e40007, 0x80e40001, 0x04000004,

    0x800f0000, 0x80ff0000, 0xa0e40008, 0x80e40001, 0x04000004, 0xc0030000,

    0x80ff0000, 0xa0e40000, 0x80e40000, 0x02000001, 0xc00c0000, 0x80e40000,

    0x02000001, 0xe0030000, 0x90e40001, 0x02000001, 0xe00f0001, 0x90e40002,

    0x0000ffff, 0x52444853, 0x000001c0, 0x00010040, 0x00000070, 0x04000059,

    0x00208e46, 0x00000000, 0x00000008, 0x0300005f, 0x00101072, 0x00000000,

    0x0300005f, 0x00101032, 0x00000001, 0x0300005f, 0x001010f2, 0x00000002,

    0x04000067, 0x001020f2, 0x00000000, 0x00000001, 0x03000065, 0x00102032,

    0x00000001, 0x03000065, 0x001020f2, 0x00000002, 0x02000068, 0x00000002,

    0x08000038, 0x001000f2, 0x00000000, 0x00101556, 0x00000000, 0x00208e46,

    0x00000000, 0x00000001, 0x0a000032, 0x001000f2, 0x00000000, 0x00101006,

    0x00000000, 0x00208e46, 0x00000000, 0x00000000, 0x00100e46, 0x00000000,

    0x0a000032, 0x001000f2, 0x00000000, 0x00101aa6, 0x00000000, 0x00208e46,

    0x00000000, 0x00000002, 0x00100e46, 0x00000000, 0x08000000, 0x001000f2,

    0x00000000, 0x00100e46, 0x00000000, 0x00208e46, 0x00000000, 0x00000003,

    0x08000038, 0x001000f2, 0x00000001, 0x00100556, 0x00000000, 0x00208e46,

    0x00000000, 0x00000005, 0x0a000032, 0x001000f2, 0x00000001, 0x00100006,

    0x00000000, 0x00208e46, 0x00000000, 0x00000004, 0x00100e46, 0x00000001,

    0x0a000032, 0x001000f2, 0x00000001, 0x00100aa6, 0x00000000, 0x00208e46,

    0x00000000, 0x00000006, 0x00100e46, 0x00000001, 0x0a000032, 0x001020f2,

    0x00000000, 0x00100ff6, 0x00000000, 0x00208e46, 0x00000000, 0x00000007,

    0x00100e46, 0x00000001, 0x05000036, 0x00102032, 0x00000001, 0x00101046,

    0x00000001, 0x05000036, 0x001020f2, 0x00000002, 0x00101e46, 0x00000002,

    0x0100003e, 0x54415453, 0x00000074, 0x0000000b, 0x00000002, 0x00000000,

    0x00000006, 0x00000003, 0x00000000, 0x00000000, 0x00000001, 0x00000000,

    0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,

    0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000003, 0x00000000,

    0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,

    0x00000000, 0x00000000, 0x46454452, 0x000000fc, 0x00000001, 0x00000054,

    0x00000001, 0x0000001c, 0xfffe0400, 0x00000100, 0x000000c6, 0x0000003c,

    0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000001,

    0x00000001, 0x74726556, 0x68537865, 0x72656461, 0x736e6f43, 0x746e6174,

    0xabab0073, 0x0000003c, 0x00000002, 0x0000006c, 0x00000080, 0x00000000,

    0x00000000, 0x0000009c, 0x00000000, 0x00000040, 0x00000002, 0x000000a4,

    0x00000000, 0x000000b4, 0x00000040, 0x00000040, 0x00000002, 0x000000a4,

    0x00000000, 0x65646f6d, 0xabab006c, 0x00030002, 0x00040004, 0x00000000,

    0x00000000, 0x6a6f7270, 0x69746365, 0x6e416e6f, 0x65695664, 0x694d0077,

    0x736f7263, 0x2074666f, 0x20295228, 0x4c534c48, 0x61685320, 0x20726564,

    0x706d6f43, 0x72656c69, 0x332e3920, 0x32392e30, 0x312e3030, 0x34383336,

    0xababab00, 0x4e475349, 0x00000068, 0x00000003, 0x00000008, 0x00000050,

    0x00000000, 0x00000000, 0x00000003, 0x00000000, 0x00000707, 0x00000059,

    0x00000000, 0x00000000, 0x00000003, 0x00000001, 0x00000303, 0x00000062,

    0x00000000, 0x00000000, 0x00000003, 0x00000002, 0x00000f0f, 0x49534f50,

    0x4e4f4954, 0x58455400, 0x524f4f43, 0x4f430044, 0x00524f4c, 0x4e47534f,

    0x0000006c, 0x00000003, 0x00000008, 0x00000050, 0x00000000, 0x00000001,

    0x00000003, 0x00000000, 0x0000000f, 0x0000005c, 0x00000000, 0x00000000,

    0x00000003, 0x00000001, 0x00000c03, 0x00000065, 0x00000000, 0x00000000,

    0x00000003, 0x00000002, 0x0000000f, 0x505f5653, 0x5449534f, 0x004e4f49,

    0x43584554, 0x44524f4f, 0x4c4f4300, 0xab00524f

};

#elif defined(D3D11_USE_SHADER_MODEL_4_0_level_9_3)

static const DWORD D3D11_VertexShader[] = {

    0x43425844, 0x01a24e41, 0x696af551, 0x4b2a87d1, 0x82ea03f6, 0x00000001,

    0x00000598, 0x00000006, 0x00000038, 0x0000016c, 0x00000334, 0x000003b0,

    0x000004b4, 0x00000524, 0x396e6f41, 0x0000012c, 0x0000012c, 0xfffe0200,

    0x000000f8, 0x00000034, 0x00240001, 0x00300000, 0x00300000, 0x00240000,

    0x00300001, 0x00000000, 0x00010008, 0x00000000, 0x00000000, 0xfffe0201,

    0x0200001f, 0x80000005, 0x900f0000, 0x0200001f, 0x80010005, 0x900f0001,

    0x0200001f, 0x80020005, 0x900f0002, 0x03000005, 0x800f0000, 0x90550000,

    0xa0e40002, 0x04000004, 0x800f0000, 0x90000000, 0xa0e40001, 0x80e40000,

    0x04000004, 0x800f0000, 0x90aa0000, 0xa0e40003, 0x80e40000, 0x03000002,

    0x800f0000, 0x80e40000, 0xa0e40004, 0x03000005, 0x800f0001, 0x80550000,

    0xa0e40006, 0x04000004, 0x800f0001, 0x80000000, 0xa0e40005, 0x80e40001,

    0x04000004, 0x800f0001, 0x80aa0000, 0xa0e40007, 0x80e40001, 0x04000004,

    0x800f0000, 0x80ff0000, 0xa0e40008, 0x80e40001, 0x04000004, 0xc0030000,

    0x80ff0000, 0xa0e40000, 0x80e40000, 0x02000001, 0xc00c0000, 0x80e40000,

    0x02000001, 0xe0030000, 0x90e40001, 0x02000001, 0xe00f0001, 0x90e40002,

    0x0000ffff, 0x52444853, 0x000001c0, 0x00010040, 0x00000070, 0x04000059,

    0x00208e46, 0x00000000, 0x00000008, 0x0300005f, 0x00101072, 0x00000000,

    0x0300005f, 0x00101032, 0x00000001, 0x0300005f, 0x001010f2, 0x00000002,

    0x04000067, 0x001020f2, 0x00000000, 0x00000001, 0x03000065, 0x00102032,

    0x00000001, 0x03000065, 0x001020f2, 0x00000002, 0x02000068, 0x00000002,

    0x08000038, 0x001000f2, 0x00000000, 0x00101556, 0x00000000, 0x00208e46,

    0x00000000, 0x00000001, 0x0a000032, 0x001000f2, 0x00000000, 0x00101006,

    0x00000000, 0x00208e46, 0x00000000, 0x00000000, 0x00100e46, 0x00000000,

    0x0a000032, 0x001000f2, 0x00000000, 0x00101aa6, 0x00000000, 0x00208e46,

    0x00000000, 0x00000002, 0x00100e46, 0x00000000, 0x08000000, 0x001000f2,

    0x00000000, 0x00100e46, 0x00000000, 0x00208e46, 0x00000000, 0x00000003,

    0x08000038, 0x001000f2, 0x00000001, 0x00100556, 0x00000000, 0x00208e46,

    0x00000000, 0x00000005, 0x0a000032, 0x001000f2, 0x00000001, 0x00100006,

    0x00000000, 0x00208e46, 0x00000000, 0x00000004, 0x00100e46, 0x00000001,

    0x0a000032, 0x001000f2, 0x00000001, 0x00100aa6, 0x00000000, 0x00208e46,

    0x00000000, 0x00000006, 0x00100e46, 0x00000001, 0x0a000032, 0x001020f2,

    0x00000000, 0x00100ff6, 0x00000000, 0x00208e46, 0x00000000, 0x00000007,

    0x00100e46, 0x00000001, 0x05000036, 0x00102032, 0x00000001, 0x00101046,

    0x00000001, 0x05000036, 0x001020f2, 0x00000002, 0x00101e46, 0x00000002,

    0x0100003e, 0x54415453, 0x00000074, 0x0000000b, 0x00000002, 0x00000000,

    0x00000006, 0x00000003, 0x00000000, 0x00000000, 0x00000001, 0x00000000,

    0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,

    0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000003, 0x00000000,

    0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,

    0x00000000, 0x00000000, 0x46454452, 0x000000fc, 0x00000001, 0x00000054,

    0x00000001, 0x0000001c, 0xfffe0400, 0x00000100, 0x000000c6, 0x0000003c,

    0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000001,

    0x00000001, 0x74726556, 0x68537865, 0x72656461, 0x736e6f43, 0x746e6174,

    0xabab0073, 0x0000003c, 0x00000002, 0x0000006c, 0x00000080, 0x00000000,

    0x00000000, 0x0000009c, 0x00000000, 0x00000040, 0x00000002, 0x000000a4,

    0x00000000, 0x000000b4, 0x00000040, 0x00000040, 0x00000002, 0x000000a4,

    0x00000000, 0x65646f6d, 0xabab006c, 0x00030002, 0x00040004, 0x00000000,

    0x00000000, 0x6a6f7270, 0x69746365, 0x6e416e6f, 0x65695664, 0x694d0077,

    0x736f7263, 0x2074666f, 0x20295228, 0x4c534c48, 0x61685320, 0x20726564,

    0x706d6f43, 0x72656c69, 0x332e3920, 0x32392e30, 0x312e3030, 0x34383336,

    0xababab00, 0x4e475349, 0x00000068, 0x00000003, 0x00000008, 0x00000050,

    0x00000000, 0x00000000, 0x00000003, 0x00000000, 0x00000707, 0x00000059,

    0x00000000, 0x00000000, 0x00000003, 0x00000001, 0x00000303, 0x00000062,

    0x00000000, 0x00000000, 0x00000003, 0x00000002, 0x00000f0f, 0x49534f50,

    0x4e4f4954, 0x58455400, 0x524f4f43, 0x4f430044, 0x00524f4c, 0x4e47534f,

    0x0000006c, 0x00000003, 0x00000008, 0x00000050, 0x00000000, 0x00000001,

    0x00000003, 0x00000000, 0x0000000f, 0x0000005c, 0x00000000, 0x00000000,

    0x00000003, 0x00000001, 0x00000c03, 0x00000065, 0x00000000, 0x00000000,

    0x00000003, 0x00000002, 0x0000000f, 0x505f5653, 0x5449534f, 0x004e4f49,

    0x43584554, 0x44524f4f, 0x4c4f4300, 0xab00524f

};

#else

#error "An appropriate vertex shader is not defined."

#endif

/* Direct3D 11.1 renderer implementation */

static SDL_Renderer *D3D11_CreateRenderer(SDL_Window * window, Uint32 flags);

static void D3D11_WindowEvent(SDL_Renderer * renderer,

                            const SDL_WindowEvent *event);

static int D3D11_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);

static int D3D11_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,

                             const SDL_Rect * rect, const void *srcPixels,

                             int srcPitch);

static int D3D11_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,

                             const SDL_Rect * rect, void **pixels, int *pitch);

static void D3D11_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);

static int D3D11_SetRenderTarget(SDL_Renderer * renderer, SDL_Texture * texture);

static int D3D11_UpdateViewport(SDL_Renderer * renderer);

static int D3D11_UpdateClipRect(SDL_Renderer * renderer);

static int D3D11_RenderClear(SDL_Renderer * renderer);

static int D3D11_RenderDrawPoints(SDL_Renderer * renderer,

                                  const SDL_FPoint * points, int count);

static int D3D11_RenderDrawLines(SDL_Renderer * renderer,

                                 const SDL_FPoint * points, int count);

static int D3D11_RenderFillRects(SDL_Renderer * renderer,

                                 const SDL_FRect * rects, int count);

static int D3D11_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,

                            const SDL_Rect * srcrect, const SDL_FRect * dstrect);

static int D3D11_RenderCopyEx(SDL_Renderer * renderer, SDL_Texture * texture,

                              const SDL_Rect * srcrect, const SDL_FRect * dstrect,

                              const double angle, const SDL_FPoint * center, const SDL_RendererFlip flip);

static int D3D11_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,

                                  Uint32 format, void * pixels, int pitch);

static void D3D11_RenderPresent(SDL_Renderer * renderer);

static void D3D11_DestroyTexture(SDL_Renderer * renderer,

                                 SDL_Texture * texture);

static void D3D11_DestroyRenderer(SDL_Renderer * renderer);

/* Direct3D 11.1 Internal Functions */

HRESULT D3D11_CreateDeviceResources(SDL_Renderer * renderer);

HRESULT D3D11_CreateWindowSizeDependentResources(SDL_Renderer * renderer);

HRESULT D3D11_UpdateForWindowSizeChange(SDL_Renderer * renderer);

HRESULT D3D11_HandleDeviceLost(SDL_Renderer * renderer);

extern "C" SDL_RenderDriver D3D11_RenderDriver = {

    D3D11_CreateRenderer,

    {

        "direct3d 11.1",

        (

            SDL_RENDERER_ACCELERATED |

            SDL_RENDERER_PRESENTVSYNC |

            SDL_RENDERER_TARGETTEXTURE

        ),                          // flags.  see SDL_RendererFlags

        2,                          // num_texture_formats

        {                           // texture_formats

            SDL_PIXELFORMAT_RGB888,

            SDL_PIXELFORMAT_ARGB8888

        },

        0,                          // max_texture_width: will be filled in later

        0                           // max_texture_height: will be filled in later

    }

};

static Uint32

DXGIFormatToSDLPixelFormat(DXGI_FORMAT dxgiFormat) {

    switch (dxgiFormat) {

        case DXGI_FORMAT_B8G8R8A8_UNORM:

            return SDL_PIXELFORMAT_ARGB8888;

        case DXGI_FORMAT_B8G8R8X8_UNORM:

            return SDL_PIXELFORMAT_RGB888;

        default:

            return SDL_PIXELFORMAT_UNKNOWN;

    }

}

static DXGI_FORMAT

SDLPixelFormatToDXGIFormat(Uint32 sdlFormat)

{

    switch (sdlFormat) {

        case SDL_PIXELFORMAT_ARGB8888:

            return DXGI_FORMAT_B8G8R8A8_UNORM;

        case SDL_PIXELFORMAT_RGB888:

            return DXGI_FORMAT_B8G8R8X8_UNORM;

        default:

            return DXGI_FORMAT_UNKNOWN;

    }

}

SDL_Renderer *

D3D11_CreateRenderer(SDL_Window * window, Uint32 flags)

{

    SDL_Renderer *renderer;

    D3D11_RenderData *data;

    renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));

    if (!renderer) {

        SDL_OutOfMemory();

        return NULL;

    }

    SDL_zerop(renderer);

    data = new D3D11_RenderData;    // Use the C++ 'new' operator to make sure the struct's members initialize using C++ rules

    if (!data) {

        SDL_OutOfMemory();

        return NULL;

    }

    data->featureLevel = (D3D_FEATURE_LEVEL) 0;

    data->windowSizeInDIPs = XMFLOAT2(0, 0);

    data->renderTargetSize = XMFLOAT2(0, 0);

    renderer->WindowEvent = D3D11_WindowEvent;

    renderer->CreateTexture = D3D11_CreateTexture;

    renderer->UpdateTexture = D3D11_UpdateTexture;

    renderer->LockTexture = D3D11_LockTexture;

    renderer->UnlockTexture = D3D11_UnlockTexture;

    renderer->SetRenderTarget = D3D11_SetRenderTarget;

    renderer->UpdateViewport = D3D11_UpdateViewport;

    renderer->UpdateClipRect = D3D11_UpdateClipRect;

    renderer->RenderClear = D3D11_RenderClear;

    renderer->RenderDrawPoints = D3D11_RenderDrawPoints;

    renderer->RenderDrawLines = D3D11_RenderDrawLines;

    renderer->RenderFillRects = D3D11_RenderFillRects;

    renderer->RenderCopy = D3D11_RenderCopy;

    renderer->RenderCopyEx = D3D11_RenderCopyEx;

    renderer->RenderReadPixels = D3D11_RenderReadPixels;

    renderer->RenderPresent = D3D11_RenderPresent;

    renderer->DestroyTexture = D3D11_DestroyTexture;

    renderer->DestroyRenderer = D3D11_DestroyRenderer;

    renderer->info = D3D11_RenderDriver.info;

    renderer->driverdata = data;

    // HACK: make sure the SDL_Renderer references the SDL_Window data now, in

    // order to give init functions access to the underlying window handle:

    renderer->window = window;

    /* Initialize Direct3D resources */

    if (FAILED(D3D11_CreateDeviceResources(renderer))) {

        D3D11_DestroyRenderer(renderer);

        return NULL;

    }

    if (FAILED(D3D11_CreateWindowSizeDependentResources(renderer))) {

        D3D11_DestroyRenderer(renderer);

        return NULL;

    }

    // TODO, WinRT: fill in renderer->info.texture_formats where appropriate

    return renderer;

}

static void

D3D11_DestroyRenderer(SDL_Renderer * renderer)

{

    D3D11_RenderData *data = (D3D11_RenderData *) renderer->driverdata;

    if (data) {

        delete data;

        data = NULL;

    }

}

static HRESULT

D3D11_CreateBlendMode(SDL_Renderer * renderer,

                      BOOL enableBlending,

                      D3D11_BLEND srcBlend,

                      D3D11_BLEND destBlend,

                      D3D11_BLEND srcBlendAlpha,

                      D3D11_BLEND destBlendAlpha,

                      ID3D11BlendState ** blendStateOutput)

{

    D3D11_RenderData *data = (D3D11_RenderData *) renderer->driverdata;

    HRESULT result = S_OK;

    D3D11_BLEND_DESC blendDesc;

    memset(&blendDesc, 0, sizeof(blendDesc));

    blendDesc.AlphaToCoverageEnable = FALSE;

    blendDesc.IndependentBlendEnable = FALSE;

    blendDesc.RenderTarget[0].BlendEnable = enableBlending;

    blendDesc.RenderTarget[0].SrcBlend = srcBlend;

    blendDesc.RenderTarget[0].DestBlend = destBlend;

    blendDesc.RenderTarget[0].BlendOp = D3D11_BLEND_OP_ADD;

    blendDesc.RenderTarget[0].SrcBlendAlpha = srcBlendAlpha;

    blendDesc.RenderTarget[0].DestBlendAlpha = destBlendAlpha;

    blendDesc.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_ADD;

    blendDesc.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;

    result = data->d3dDevice->CreateBlendState(&blendDesc, blendStateOutput);

    if (FAILED(result)) {

        WIN_SetErrorFromHRESULT(__FUNCTION__ ", ID3D11Device1::CreateBlendState", result);

        return result;

    }

    return S_OK;

}

// Create resources that depend on the device.

HRESULT

D3D11_CreateDeviceResources(SDL_Renderer * renderer)

{

    D3D11_RenderData *data = (D3D11_RenderData *) renderer->driverdata;

    // This flag adds support for surfaces with a different color channel ordering

    // than the API default. It is required for compatibility with Direct2D.

    UINT creationFlags = D3D11_CREATE_DEVICE_BGRA_SUPPORT;

    // Make sure Direct3D's debugging feature gets used, if the app requests it.

    const char *hint = SDL_GetHint(SDL_HINT_RENDER_DIRECT3D11_DEBUG);

    if (hint) {

        if (*hint == '1') {

            creationFlags |= D3D11_CREATE_DEVICE_DEBUG;

        }

    }

    // This array defines the set of DirectX hardware feature levels this app will support.

    // Note the ordering should be preserved.

    // Don't forget to declare your application's minimum required feature level in its

    // description.  All applications are assumed to support 9.1 unless otherwise stated.

    D3D_FEATURE_LEVEL featureLevels[] = 

    {

        D3D_FEATURE_LEVEL_11_1,

        D3D_FEATURE_LEVEL_11_0,

        D3D_FEATURE_LEVEL_10_1,

        D3D_FEATURE_LEVEL_10_0,

        D3D_FEATURE_LEVEL_9_3,

        D3D_FEATURE_LEVEL_9_2,

        D3D_FEATURE_LEVEL_9_1

    };

    // Create the Direct3D 11 API device object and a corresponding context.

    ComPtr<ID3D11Device> device;

    ComPtr<ID3D11DeviceContext> context;

    HRESULT result = S_OK;

    result = D3D11CreateDevice(

        nullptr, // Specify nullptr to use the default adapter.

        D3D_DRIVER_TYPE_HARDWARE,

        nullptr,

        creationFlags, // Set set debug and Direct2D compatibility flags.

        featureLevels, // List of feature levels this app can support.

        ARRAYSIZE(featureLevels),

        D3D11_SDK_VERSION, // Always set this to D3D11_SDK_VERSION for Windows Store apps.

        &device, // Returns the Direct3D device created.

        &data->featureLevel, // Returns feature level of device created.

        &context // Returns the device immediate context.

        );

    if (FAILED(result)) {

        WIN_SetErrorFromHRESULT(__FUNCTION__ ", D3D11CreateDevice", result);

        return result;

    }

    // Get the Direct3D 11.1 API device and context interfaces.

    result = device.As(&(data->d3dDevice));

    if (FAILED(result)) {

        WIN_SetErrorFromHRESULT(__FUNCTION__ ", ID3D11Device to ID3D11Device1", result);

        return result;

    }

    result = context.As(&data->d3dContext);

    if (FAILED(result)) {

        WIN_SetErrorFromHRESULT(__FUNCTION__ ", ID3D11DeviceContext to ID3D11DeviceContext1", result);

        return result;

    }

    //

    // Make note of the maximum texture size

    // Max texture sizes are documented on MSDN, at:

    // http://msdn.microsoft.com/en-us/library/windows/apps/ff476876.aspx

    //

    switch (data->d3dDevice->GetFeatureLevel()) {

        case D3D_FEATURE_LEVEL_11_1:

        case D3D_FEATURE_LEVEL_11_0:

            renderer->info.max_texture_width = renderer->info.max_texture_height = 16384;

            break;

        case D3D_FEATURE_LEVEL_10_1:

        case D3D_FEATURE_LEVEL_10_0:

            renderer->info.max_texture_width = renderer->info.max_texture_height = 8192;

            break;

        case D3D_FEATURE_LEVEL_9_3:

            renderer->info.max_texture_width = renderer->info.max_texture_height = 4096;

            break;

        case D3D_FEATURE_LEVEL_9_2:

        case D3D_FEATURE_LEVEL_9_1:

            renderer->info.max_texture_width = renderer->info.max_texture_height = 2048;

            break;

    }

    //

    // Load in SDL's one and only vertex shader:

    //

    result = data->d3dDevice->CreateVertexShader(

        D3D11_VertexShader,

        sizeof(D3D11_VertexShader),

        nullptr,

        &data->vertexShader

        );

    if (FAILED(result)) {

        WIN_SetErrorFromHRESULT(__FUNCTION__ ", ID3D11Device1::CreateVertexShader", result);

        return result;

    }

    //

    // Create an input layout for SDL's vertex shader:

    //

    const D3D11_INPUT_ELEMENT_DESC vertexDesc[] = 

    {

        { "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },

        { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 12, D3D11_INPUT_PER_VERTEX_DATA, 0 },

        { "COLOR", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, 20, D3D11_INPUT_PER_VERTEX_DATA, 0 },

    };

    result = data->d3dDevice->CreateInputLayout(

        vertexDesc,

        ARRAYSIZE(vertexDesc),

        D3D11_VertexShader,

        sizeof(D3D11_VertexShader),

        &data->inputLayout

        );

    if (FAILED(result)) {

        WIN_SetErrorFromHRESULT(__FUNCTION__ ", ID3D11Device1::CreateInputLayout", result);

        return result;

    }

    //

    // Load in SDL's pixel shaders

    //

    result = data->d3dDevice->CreatePixelShader(

        D3D11_PixelShader_Textures,

        sizeof(D3D11_PixelShader_Textures),

        nullptr,

        &data->texturePixelShader

        );

    if (FAILED(result)) {

        WIN_SetErrorFromHRESULT(__FUNCTION__ ", ID3D11Device1::CreatePixelShader ['textures' shader]", result);

        return result;

    }

    result = data->d3dDevice->CreatePixelShader(

        D3D11_PixelShader_Colors,

        sizeof(D3D11_PixelShader_Colors),

        nullptr,

        &data->colorPixelShader

        );

    if (FAILED(result)) {

        WIN_SetErrorFromHRESULT(__FUNCTION__ ", ID3D11Device1::CreatePixelShader ['color' shader]", result);

        return result;

    }

    //

    // Setup space to hold vertex shader constants:

    //

    CD3D11_BUFFER_DESC constantBufferDesc(sizeof(VertexShaderConstants), D3D11_BIND_CONSTANT_BUFFER);

    result = data->d3dDevice->CreateBuffer(

		&constantBufferDesc,

		nullptr,

        &data->vertexShaderConstants

		);

    if (FAILED(result)) {

        WIN_SetErrorFromHRESULT(__FUNCTION__ ", ID3D11Device1::CreateBuffer [vertex shader constants]", result);

        return result;

    }

    //

    // Make sure that the vertex buffer, if already created, gets freed.

    // It will be recreated later.

    //

    data->vertexBuffer = nullptr;

    //

    // Create samplers to use when drawing textures:

    //

    D3D11_SAMPLER_DESC samplerDesc;

    samplerDesc.Filter = SDL_D3D11_NEAREST_PIXEL_FILTER;

    samplerDesc.AddressU = D3D11_TEXTURE_ADDRESS_CLAMP;

    samplerDesc.AddressV = D3D11_TEXTURE_ADDRESS_CLAMP;

    samplerDesc.AddressW = D3D11_TEXTURE_ADDRESS_CLAMP;

    samplerDesc.MipLODBias = 0.0f;

    samplerDesc.MaxAnisotropy = 1;

    samplerDesc.ComparisonFunc = D3D11_COMPARISON_ALWAYS;

    samplerDesc.BorderColor[0] = 0.0f;

    samplerDesc.BorderColor[1] = 0.0f;

    samplerDesc.BorderColor[2] = 0.0f;

    samplerDesc.BorderColor[3] = 0.0f;

    samplerDesc.MinLOD = 0.0f;

    samplerDesc.MaxLOD = D3D11_FLOAT32_MAX;

    result = data->d3dDevice->CreateSamplerState(

        &samplerDesc,

        &data->nearestPixelSampler

        );

    if (FAILED(result)) {

        WIN_SetErrorFromHRESULT(__FUNCTION__ ", ID3D11Device1::CreateSamplerState [nearest-pixel filter]", result);

        return result;

    }

    samplerDesc.Filter = SDL_D3D11_LINEAR_FILTER;

    result = data->d3dDevice->CreateSamplerState(

        &samplerDesc,

        &data->linearSampler

        );

    if (FAILED(result)) {

        WIN_SetErrorFromHRESULT(__FUNCTION__ ", ID3D11Device1::CreateSamplerState [linear filter]", result);

        return result;

    }

    //

    // Setup Direct3D rasterizer states

    //

    D3D11_RASTERIZER_DESC rasterDesc;

    memset(&rasterDesc, 0, sizeof(rasterDesc));

	rasterDesc.AntialiasedLineEnable = false;

	rasterDesc.CullMode = D3D11_CULL_NONE;

	rasterDesc.DepthBias = 0;

	rasterDesc.DepthBiasClamp = 0.0f;

	rasterDesc.DepthClipEnable = true;

	rasterDesc.FillMode = D3D11_FILL_SOLID;

	rasterDesc.FrontCounterClockwise = false;

	rasterDesc.MultisampleEnable = false;

	rasterDesc.ScissorEnable = false;

	rasterDesc.SlopeScaledDepthBias = 0.0f;

	result = data->d3dDevice->CreateRasterizerState(&rasterDesc, &data->mainRasterizer);

	if (FAILED(result)) {

        WIN_SetErrorFromHRESULT(__FUNCTION__ ", ID3D11Device1::CreateRasterizerState [main rasterizer]", result);

        return result;

    }

    rasterDesc.ScissorEnable = true;

    result = data->d3dDevice->CreateRasterizerState(&rasterDesc, &data->clippedRasterizer);

	if (FAILED(result)) {

        WIN_SetErrorFromHRESULT(__FUNCTION__ ", ID3D11Device1::CreateRasterizerState [clipped rasterizer]", result);

        return result;

    }

    //

    // Create blending states:

    //

    result = D3D11_CreateBlendMode(

        renderer,

        TRUE,

        D3D11_BLEND_SRC_ALPHA,          /* srcBlend */

        D3D11_BLEND_INV_SRC_ALPHA,      /* destBlend */

        D3D11_BLEND_ONE,                /* srcBlendAlpha */

        D3D11_BLEND_INV_SRC_ALPHA,      /* destBlendAlpha */

        &data->blendModeBlend);

    if (FAILED(result)) {

        // D3D11_CreateBlendMode will set the SDL error, if it fails

        return result;

    }

    result = D3D11_CreateBlendMode(

        renderer,

        TRUE,

        D3D11_BLEND_SRC_ALPHA,          /* srcBlend */

        D3D11_BLEND_ONE,                /* destBlend */

        D3D11_BLEND_ZERO,               /* srcBlendAlpha */

        D3D11_BLEND_ONE,                /* destBlendAlpha */

        &data->blendModeAdd);

    if (FAILED(result)) {

        // D3D11_CreateBlendMode will set the SDL error, if it fails

        return result;

    }

    result = D3D11_CreateBlendMode(

        renderer,

        TRUE,

        D3D11_BLEND_ZERO,               /* srcBlend */

        D3D11_BLEND_SRC_COLOR,          /* destBlend */

        D3D11_BLEND_ZERO,               /* srcBlendAlpha */

        D3D11_BLEND_ONE,                /* destBlendAlpha */

        &data->blendModeMod);

    if (FAILED(result)) {

        // D3D11_CreateBlendMode will set the SDL error, if it fails

        return result;

    }

    //

    // All done!

    //

    return S_OK;

}

#ifdef __WINRT__

static ABI::Windows::UI::Core::ICoreWindow *

D3D11_GetCoreWindowFromSDLRenderer(SDL_Renderer * renderer)

{

    SDL_Window * sdlWindow = renderer->window;

    if ( ! renderer->window ) {

        return nullptr;

    }

    SDL_SysWMinfo sdlWindowInfo;

    SDL_VERSION(&sdlWindowInfo.version);

    if ( ! SDL_GetWindowWMInfo(sdlWindow, &sdlWindowInfo) ) {

        return nullptr;