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2025-08-25 09:50:30 +08:00
parent bd0e31e922
commit 1359ff4ecc
1630 changed files with 738486 additions and 2399 deletions
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+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 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.
+*/
+
+#ifndef SDL_shaders_gl_h_
+#define SDL_shaders_gl_h_
+
+#include "SDL_internal.h"
+
+// OpenGL shader implementation
+
+typedef enum
+{
+    SHADER_INVALID = -1,
+    SHADER_NONE,
+    SHADER_SOLID,
+    SHADER_RGB,
+    SHADER_RGBA,
+    SHADER_RGB_PIXELART,
+    SHADER_RGBA_PIXELART,
+#ifdef SDL_HAVE_YUV
+    SHADER_YUV,
+    SHADER_NV12_RA,
+    SHADER_NV12_RG,
+    SHADER_NV21_RA,
+    SHADER_NV21_RG,
+#endif
+    NUM_SHADERS
+} GL_Shader;
+
+typedef struct GL_ShaderContext GL_ShaderContext;
+
+extern GL_ShaderContext *GL_CreateShaderContext(void);
+extern void GL_SelectShader(GL_ShaderContext *ctx, GL_Shader shader, const float *shader_params);
+extern void GL_DestroyShaderContext(GL_ShaderContext *ctx);
+
+#endif // SDL_shaders_gl_h_