1 /*
2   Simple DirectMedia Layer
3   Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
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 #if SDL_VIDEO_RENDER_OGL_ES2
27 
28 typedef struct GLES2_ShaderInstance
29 {
30     GLenum type;
31     GLenum format;
32     int length;
33     const void *data;
34 } GLES2_ShaderInstance;
35 
36 typedef struct GLES2_Shader
37 {
38     int instance_count;
39     const GLES2_ShaderInstance *instances[4];
40 } GLES2_Shader;
41 
42 typedef enum
43 {
44     GLES2_SHADER_VERTEX_DEFAULT,
45     GLES2_SHADER_FRAGMENT_SOLID_SRC,
46     GLES2_SHADER_FRAGMENT_TEXTURE_ABGR_SRC,
47     GLES2_SHADER_FRAGMENT_TEXTURE_ARGB_SRC,
48     GLES2_SHADER_FRAGMENT_TEXTURE_BGR_SRC,
49     GLES2_SHADER_FRAGMENT_TEXTURE_RGB_SRC,
50     GLES2_SHADER_FRAGMENT_TEXTURE_YUV_JPEG_SRC,
51     GLES2_SHADER_FRAGMENT_TEXTURE_YUV_BT601_SRC,
52     GLES2_SHADER_FRAGMENT_TEXTURE_YUV_BT709_SRC,
53     GLES2_SHADER_FRAGMENT_TEXTURE_NV12_JPEG_SRC,
54     GLES2_SHADER_FRAGMENT_TEXTURE_NV12_BT601_SRC,
55     GLES2_SHADER_FRAGMENT_TEXTURE_NV12_BT709_SRC,
56     GLES2_SHADER_FRAGMENT_TEXTURE_NV21_JPEG_SRC,
57     GLES2_SHADER_FRAGMENT_TEXTURE_NV21_BT601_SRC,
58     GLES2_SHADER_FRAGMENT_TEXTURE_NV21_BT709_SRC,
59     GLES2_SHADER_FRAGMENT_TEXTURE_EXTERNAL_OES_SRC
60 } GLES2_ShaderType;
61 
62 #define GLES2_SOURCE_SHADER (GLenum)-1
63 
64 const GLES2_Shader *GLES2_GetShader(GLES2_ShaderType type);
65 
66 #endif /* SDL_VIDEO_RENDER_OGL_ES2 */
67 
68 #endif /* SDL_shaders_gles2_h_ */
69 
70 /* vi: set ts=4 sw=4 expandtab: */
71