Atlas - SDL_shaders_gles2.h
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1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2025 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#ifndef SDL_shaders_gles2_h_
24#define SDL_shaders_gles2_h_
25
26#ifdef SDL_VIDEO_RENDER_OGL_ES2
27
28typedef enum
29{
30    GLES2_SHADER_FRAGMENT_INCLUDE_NONE = 0,
31    GLES2_SHADER_FRAGMENT_INCLUDE_BEST_TEXCOORD_PRECISION,
32    GLES2_SHADER_FRAGMENT_INCLUDE_MEDIUM_TEXCOORD_PRECISION,
33    GLES2_SHADER_FRAGMENT_INCLUDE_HIGH_TEXCOORD_PRECISION,
34    GLES2_SHADER_FRAGMENT_INCLUDE_UNDEF_PRECISION,
35    GLES2_SHADER_FRAGMENT_INCLUDE_COUNT
36} GLES2_ShaderIncludeType;
37
38typedef enum
39{
40    GLES2_SHADER_VERTEX_DEFAULT = 0,
41    GLES2_SHADER_FRAGMENT_SOLID,
42    GLES2_SHADER_FRAGMENT_TEXTURE_PALETTE_NEAREST,
43    GLES2_SHADER_FRAGMENT_TEXTURE_PALETTE_LINEAR,
44    GLES2_SHADER_FRAGMENT_TEXTURE_PALETTE_PIXELART,
45    GLES2_SHADER_FRAGMENT_TEXTURE_PALETTE_NEAREST_COLORSWAP,
46    GLES2_SHADER_FRAGMENT_TEXTURE_PALETTE_LINEAR_COLORSWAP,
47    GLES2_SHADER_FRAGMENT_TEXTURE_PALETTE_PIXELART_COLORSWAP,
48    GLES2_SHADER_FRAGMENT_TEXTURE_RGB,
49    GLES2_SHADER_FRAGMENT_TEXTURE_RGB_PIXELART,
50    GLES2_SHADER_FRAGMENT_TEXTURE_BGR,
51    GLES2_SHADER_FRAGMENT_TEXTURE_BGR_PIXELART,
52    GLES2_SHADER_FRAGMENT_TEXTURE_ARGB,
53    GLES2_SHADER_FRAGMENT_TEXTURE_ARGB_PIXELART,
54    GLES2_SHADER_FRAGMENT_TEXTURE_ABGR,
55    GLES2_SHADER_FRAGMENT_TEXTURE_ABGR_PIXELART,
56#ifdef SDL_HAVE_YUV
57    GLES2_SHADER_FRAGMENT_TEXTURE_YUV,
58    GLES2_SHADER_FRAGMENT_TEXTURE_NV12_RA,
59    GLES2_SHADER_FRAGMENT_TEXTURE_NV12_RG,
60    GLES2_SHADER_FRAGMENT_TEXTURE_NV21_RA,
61    GLES2_SHADER_FRAGMENT_TEXTURE_NV21_RG,
62#endif
63    // Shaders beyond this point are optional and not cached at render creation
64    GLES2_SHADER_FRAGMENT_TEXTURE_EXTERNAL_OES,
65    GLES2_SHADER_COUNT
66} GLES2_ShaderType;
67
68extern const char *GLES2_GetShaderPrologue(GLES2_ShaderType type);
69extern const char *GLES2_GetShaderInclude(GLES2_ShaderIncludeType type);
70extern const char *GLES2_GetShader(GLES2_ShaderType type);
71extern GLES2_ShaderIncludeType GLES2_GetTexCoordPrecisionEnumFromHint(void);
72
73#endif // SDL_VIDEO_RENDER_OGL_ES2
74
75#endif // SDL_shaders_gles2_h_
76
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