Atlas - SDL_shaders_d3d11.c
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[FILE BEGIN]
1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2026 Sam Lantinga <[email protected]>
4
5  This software is provided 'as-is', without any express or implied
6  warranty.  In no event will the authors be held liable for any damages
7  arising from the use of this software.
8
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12
13  1. The origin of this software must not be misrepresented; you must not
14     claim that you wrote the original software. If you use this software
15     in a product, an acknowledgment in the product documentation would be
16     appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18     misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20*/
21#include "SDL_internal.h"
22
23#ifdef SDL_VIDEO_RENDER_D3D11
24
25#define COBJMACROS
26#include "../../core/windows/SDL_windows.h"
27#include <d3d11_1.h>
28
29#include "SDL_shaders_d3d11.h"
30
31#if SDL_WINAPI_FAMILY_PHONE
32#error Need to build shaders with level_9_3
33#endif
34
35// The shaders here were compiled with compile_shaders.bat
36
37#define g_main D3D11_PixelShader_Colors
38#include "D3D11_PixelShader_Colors.h"
39#undef g_main
40
41#define g_main D3D11_PixelShader_Textures
42#include "D3D11_PixelShader_Textures.h"
43#undef g_main
44
45#define g_main D3D11_PixelShader_Advanced
46#include "D3D11_PixelShader_Advanced.h"
47#undef g_main
48
49#define g_main D3D11_VertexShader
50#include "D3D11_VertexShader.h"
51#undef g_main
52
53
54static struct
55{
56    const void *shader_data;
57    SIZE_T shader_size;
58} D3D11_shaders[] = {
59    { NULL, 0 },
60    { D3D11_PixelShader_Colors, sizeof(D3D11_PixelShader_Colors) },
61    { D3D11_PixelShader_Textures, sizeof(D3D11_PixelShader_Textures) },
62    { D3D11_PixelShader_Advanced, sizeof(D3D11_PixelShader_Advanced) },
63};
64SDL_COMPILE_TIME_ASSERT(D3D11_shaders, SDL_arraysize(D3D11_shaders) == NUM_SHADERS);
65
66bool D3D11_CreateVertexShader(ID3D11Device1 *d3dDevice, ID3D11VertexShader **vertexShader, ID3D11InputLayout **inputLayout)
67{
68    // Declare how the input layout for SDL's vertex shader will be setup:
69    const D3D11_INPUT_ELEMENT_DESC vertexDesc[] = {
70        { "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },
71        { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 8, D3D11_INPUT_PER_VERTEX_DATA, 0 },
72        { "COLOR", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, 16, D3D11_INPUT_PER_VERTEX_DATA, 0 },
73    };
74    HRESULT result;
75
76    // Load in SDL's one and only vertex shader:
77    result = ID3D11Device_CreateVertexShader(d3dDevice,
78                                             D3D11_VertexShader,
79                                             sizeof(D3D11_VertexShader),
80                                             NULL,
81                                             vertexShader);
82    if (FAILED(result)) {
83        return WIN_SetErrorFromHRESULT("ID3D11Device1::CreateVertexShader", result);
84    }
85
86    // Create an input layout for SDL's vertex shader:
87    result = ID3D11Device_CreateInputLayout(d3dDevice,
88                                            vertexDesc,
89                                            ARRAYSIZE(vertexDesc),
90                                            D3D11_VertexShader,
91                                            sizeof(D3D11_VertexShader),
92                                            inputLayout);
93    if (FAILED(result)) {
94        return WIN_SetErrorFromHRESULT("ID3D11Device1::CreateInputLayout", result);
95    }
96    return true;
97}
98
99bool D3D11_CreatePixelShader(ID3D11Device1 *d3dDevice, D3D11_Shader shader, ID3D11PixelShader **pixelShader)
100{
101    HRESULT result;
102
103    result = ID3D11Device_CreatePixelShader(d3dDevice,
104                                            D3D11_shaders[shader].shader_data,
105                                            D3D11_shaders[shader].shader_size,
106                                            NULL,
107                                            pixelShader);
108    if (FAILED(result)) {
109        return WIN_SetErrorFromHRESULT("ID3D11Device1::CreatePixelShader", result);
110    }
111    return true;
112}
113
114#endif // SDL_VIDEO_RENDER_D3D11
115
[FILE END]
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