GLESDynamicLibrary.h

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/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */
 
#ifndef META_OCEAN_RENDERING_GLES_DYNAMIC_LIBRARY_H
#define META_OCEAN_RENDERING_GLES_DYNAMIC_LIBRARY_H
 
#include "ocean/rendering/glescenegraph/GLESceneGraph.h"
 
#ifdef OCEAN_RENDERING_GLES_USE_DYNAMIC_LIBRARY
 
#define GL_GLEXT_PROTOTYPES
 
#if defined(OCEAN_PLATFORM_BUILD_LINUX)
    #include <GL/gl.h>
    #include <GL/glext.h>
#else
    #include <gl/GL.h>
    #include <gl/glext.h>
#endif
 
namespace Ocean
{
 
#define glActiveTexture(a)                                 Rendering::GLESceneGraph::GLESDynamicLibrary::glActiveTexture_(a)
#define glAttachShader(a, b)                               Rendering::GLESceneGraph::GLESDynamicLibrary::glAttachShader_(a, b)
#define glBindBuffer(a, b)                                 Rendering::GLESceneGraph::GLESDynamicLibrary::glBindBuffer_(a, b)
#define glBindFramebuffer(a, b)                            Rendering::GLESceneGraph::GLESDynamicLibrary::glBindFramebuffer_(a, b)
#define glBindVertexArray(a)                               Rendering::GLESceneGraph::GLESDynamicLibrary::glBindVertexArray_(a)
#define glBufferData(a, b, c, d)                           Rendering::GLESceneGraph::GLESDynamicLibrary::glBufferData_(a, b, c, d)
#define glCheckFramebufferStatus(a)                        Rendering::GLESceneGraph::GLESDynamicLibrary::glCheckFramebufferStatus_(a)
#define glClearDepthf(a)                                   Rendering::GLESceneGraph::GLESDynamicLibrary::glClearDepthf_(a)
#define glCompileShader(a)                                 Rendering::GLESceneGraph::GLESDynamicLibrary::glCompileShader_(a)
#define glCompressedTexImage2D(a, b, c, d, e, f, g, h)     Rendering::GLESceneGraph::GLESDynamicLibrary::glCompressedTexImage2D_(a, b, c, d, e, f, g, h)
#define glCreateProgram()                                  Rendering::GLESceneGraph::GLESDynamicLibrary::glCreateProgram_()
#define glCreateShader(a)                                  Rendering::GLESceneGraph::GLESDynamicLibrary::glCreateShader_(a)
#define glDeleteBuffers(a, b)                              Rendering::GLESceneGraph::GLESDynamicLibrary::glDeleteBuffers_(a, b)
#define glDeleteFramebuffers(a, b)                         Rendering::GLESceneGraph::GLESDynamicLibrary::glDeleteFramebuffers_(a, b)
#define glDeleteProgram(a)                                 Rendering::GLESceneGraph::GLESDynamicLibrary::glDeleteProgram_(a)
#define glDeleteShader(a)                                  Rendering::GLESceneGraph::GLESDynamicLibrary::glDeleteShader_(a)
#define glDeleteTextures(a, b)                             Rendering::GLESceneGraph::GLESDynamicLibrary::glDeleteTextures_(a, b)
#define glDeleteVertexArrays(a, b)                         Rendering::GLESceneGraph::GLESDynamicLibrary::glDeleteVertexArrays_(a, b)
#define glDetachShader(a, b)                               Rendering::GLESceneGraph::GLESDynamicLibrary::glDetachShader_(a, b)
#define glDrawArrays(a, b, c)                              Rendering::GLESceneGraph::GLESDynamicLibrary::glDrawArrays_(a, b, c)
#define glDrawElements(a, b, c, d)                         Rendering::GLESceneGraph::GLESDynamicLibrary::glDrawElements_(a, b, c, d)
#define glEnableVertexAttribArray(a)                       Rendering::GLESceneGraph::GLESDynamicLibrary::glEnableVertexAttribArray_(a)
#define glFramebufferTexture2D(a, b, c, d, e)              Rendering::GLESceneGraph::GLESDynamicLibrary::glFramebufferTexture2D_(a, b, c, d, e)
#define glGenBuffers(a, b)                                 Rendering::GLESceneGraph::GLESDynamicLibrary::glGenBuffers_(a, b)
#define glGenerateMipmap(a)                                Rendering::GLESceneGraph::GLESDynamicLibrary::glGenerateMipmap_(a)
#define glGenFramebuffers(a, b)                            Rendering::GLESceneGraph::GLESDynamicLibrary::glGenFramebuffers_(a, b)
#define glGenTextures(a, b)                                Rendering::GLESceneGraph::GLESDynamicLibrary::glGenTextures_(a, b)
#define glGenVertexArrays(a, b)                            Rendering::GLESceneGraph::GLESDynamicLibrary::glGenVertexArrays_(a, b)
#define glGetAttribLocation(a, b)                          Rendering::GLESceneGraph::GLESDynamicLibrary::glGetAttribLocation_(a, b)
#define glGetProgramInfoLog(a, b, c, d)                    Rendering::GLESceneGraph::GLESDynamicLibrary::glGetProgramInfoLog_(a, b, c, d)
#define glGetProgramiv(a, b, c)                            Rendering::GLESceneGraph::GLESDynamicLibrary::glGetProgramiv_(a, b, c)
#define glGetShaderInfoLog(a, b, c, d)                     Rendering::GLESceneGraph::GLESDynamicLibrary::glGetShaderInfoLog_(a, b, c, d)
#define glGetShaderiv(a, b, c)                             Rendering::GLESceneGraph::GLESDynamicLibrary::glGetShaderiv_(a, b, c)
#define glGetStringi(a, b)                                 Rendering::GLESceneGraph::GLESDynamicLibrary::glGetStringi_(a, b)
#define glGetUniformLocation(a, b)                         Rendering::GLESceneGraph::GLESDynamicLibrary::glGetUniformLocation_(a, b)
#define glIsProgram(a)                                     Rendering::GLESceneGraph::GLESDynamicLibrary::glIsProgram_(a)
#define glLinkProgram(a)                                   Rendering::GLESceneGraph::GLESDynamicLibrary::glLinkProgram_(a)
#define glReleaseShaderCompiler()                          Rendering::GLESceneGraph::GLESDynamicLibrary::glReleaseShaderCompiler_()
#define glShaderSource(a, b, c, d)                         Rendering::GLESceneGraph::GLESDynamicLibrary::glShaderSource_(a, b, c, d)
#define glTexImage2DMultisample(a, b, c, d, e, f)          Rendering::GLESceneGraph::GLESDynamicLibrary::glTexImage2DMultisample_(a, b, c, d, e, f)
#define glUniform1f(a, b)                                  Rendering::GLESceneGraph::GLESDynamicLibrary::glUniform1f_(a, b)
#define glUniform1i(a, b)                                  Rendering::GLESceneGraph::GLESDynamicLibrary::glUniform1i_(a, b)
#define glUniform1ui(a, b)                                 Rendering::GLESceneGraph::GLESDynamicLibrary::glUniform1ui_(a, b)
#define glUniform2f(a, b, c)                               Rendering::GLESceneGraph::GLESDynamicLibrary::glUniform2f_(a, b, c)
#define glUniform2fv(a, b, c)                              Rendering::GLESceneGraph::GLESDynamicLibrary::glUniform2fv_(a, b, c)
#define glUniform3f(a, b, c, d)                            Rendering::GLESceneGraph::GLESDynamicLibrary::glUniform3f_(a, b, c, d)
#define glUniform3fv(a, b, c)                              Rendering::GLESceneGraph::GLESDynamicLibrary::glUniform3fv_(a, b, c)
#define glUniform4f(a, b, c, d, e)                         Rendering::GLESceneGraph::GLESDynamicLibrary::glUniform4f_(a, b, c, d, e)
#define glUniform4fv(a, b, c)                              Rendering::GLESceneGraph::GLESDynamicLibrary::glUniform4fv_(a, b, c)
#define glUniform1fv(a, b, c)                              Rendering::GLESceneGraph::GLESDynamicLibrary::glUniform1fv_(a, b, c)
#define glUniformMatrix3fv(a, b, c, d)                     Rendering::GLESceneGraph::GLESDynamicLibrary::glUniformMatrix3fv_(a, b, c, d)
#define glUniformMatrix4fv(a, b, c, d)                     Rendering::GLESceneGraph::GLESDynamicLibrary::glUniformMatrix4fv_(a, b, c, d)
#define glUseProgram(a)                                    Rendering::GLESceneGraph::GLESDynamicLibrary::glUseProgram_(a)
#define glVertexAttribPointer(a, b, c, d, e, f)            Rendering::GLESceneGraph::GLESDynamicLibrary::glVertexAttribPointer_(a, b, c, d, e, f)
#define glVertexAttribIPointer(a, b, c, d, e)              Rendering::GLESceneGraph::GLESDynamicLibrary::glVertexAttribIPointer_(a, b, c, d, e)
 
namespace Rendering
{
 
namespace GLESceneGraph
{
 
/**
 * This class stores the OpenGL function pointers for OpenGL 2.0+ functions
  * @ingroup renderinggles
 */
class OCEAN_RENDERING_GLES_EXPORT GLESDynamicLibrary
{
    public:
 
        typedef void (__stdcall *glActiveTextureFunction)(GLenum texture);
        typedef void (__stdcall *glAttachShaderFunction)(GLuint, GLuint);
        typedef void (__stdcall *glBindBufferFunction)(GLenum, GLuint);
        typedef void (__stdcall *glBindFramebufferFunction)(GLenum target, GLuint framebuffer);
        typedef void (__stdcall *glBindVertexArrayFunction)(GLuint  array);
        typedef void (__stdcall *glBufferDataFunction)(GLenum, GLsizeiptr, const void*, GLenum);
        typedef GLenum (__stdcall *glCheckFramebufferStatusFunction)(GLenum target);
        typedef void (__stdcall *glClearDepthfFunction)(GLclampf);
        typedef void (__stdcall *glCompileShaderFunction)(GLuint);
        typedef void (__stdcall *glCompressedTexImage2DFunction)(GLenum, GLint, GLenum, GLsizei, GLsizei, GLint, GLsizei, const void*);
        typedef GLuint (__stdcall *glCreateProgramFunction)();
        typedef GLuint (__stdcall *glCreateShaderFunction)(GLenum type);
        typedef void (__stdcall *glDeleteBuffersFunction)(GLsizei, const GLuint*);
        typedef void (__stdcall *glDeleteFramebuffersFunction)(GLsizei n, const GLuint * framebuffers);
        typedef void (__stdcall *glDeleteProgramFunction)(GLuint);
        typedef void (__stdcall *glDeleteShaderFunction)(GLuint);
        typedef void (__stdcall *glDeleteTexturesFunction)(GLsizei, const GLuint*);
        typedef void (__stdcall *glDeleteVertexArraysFunction)(GLsizei, const GLuint*);
        typedef void (__stdcall *glDetachShaderFunction)(GLuint, GLuint);
        typedef void (__stdcall *glDrawArraysFunction)(GLenum, GLint, GLsizei);
        typedef void (__stdcall *glDrawElementsFunction)(GLenum, GLsizei, GLenum, const void*);
        typedef void (__stdcall *glEnableVertexAttribArrayFunction)(GLuint index);
        typedef void (__stdcall *glFramebufferTexture2DFunction)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
        typedef void (__stdcall *glGenBuffersFunction)(GLsizei, GLuint*);
        typedef void (__stdcall *glGenerateMipmapFunction)(GLenum target);
        typedef void (__stdcall *glGenFramebuffersFunction)(GLsizei n, GLuint *ids);
        typedef void (__stdcall *glGenTexturesFunction)(GLsizei, GLuint*);
        typedef void (__stdcall *glGenVertexArraysFunction)(GLsizei n, GLuint *arrays);
        typedef int (__stdcall *glGetAttribLocationFunction)(GLuint, const char*);
        typedef void (__stdcall *glGetProgramInfoLogFunction)(GLuint, GLsizei, GLsizei*, char*);
        typedef void (__stdcall *glGetProgramivFunction)(GLuint, GLenum, GLint*);
        typedef void (__stdcall *glGetShaderInfoLogFunction)(GLuint, GLsizei, GLsizei*, char*);
        typedef void (__stdcall *glGetShaderivFunction)(GLuint, GLenum, GLint*);
        typedef GLubyte* (__stdcall *glGetStringiFunction)(GLenum, GLuint);
        typedef int (__stdcall *glGetUniformLocationFunction)(GLuint, const char*);
        typedef GLboolean (__stdcall *glIsProgramFunction)(GLuint program);
        typedef void (__stdcall *glLinkProgramFunction)(GLuint);
        typedef void (__stdcall *glReleaseShaderCompilerFunction)();
        typedef void (__stdcall *glShaderSourceFunction)(GLuint, GLsizei, const char**, const GLint*);
        typedef void (__stdcall *glTexImage2DMultisampleFunction)(GLenum, GLsizei, GLenum, GLsizei, GLsizei, GLboolean);
        typedef void (__stdcall *glUniform1fFunction)(GLint location, GLfloat x);
        typedef void (__stdcall *glUniform1fvFunction)(GLint, GLsizei, const GLfloat*);
        typedef void (__stdcall *glUniform1iFunction)(GLint, GLint);
        typedef void (__stdcall *glUniform1uiFunction)(GLint, GLuint);
        typedef void (__stdcall *glUniform2fFunction)(GLint, GLfloat, GLfloat);
        typedef void (__stdcall *glUniform2fvFunction)(GLint location, GLsizei count, const GLfloat* v);
        typedef void (__stdcall *glUniform3fFunction)(GLint, GLfloat, GLfloat, GLfloat);
        typedef void (__stdcall *glUniform3fvFunction)(GLint location, GLsizei count, const GLfloat* v);
        typedef void (__stdcall *glUniform4fFunction)(GLint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
        typedef void (__stdcall *glUniform4fvFunction)(GLint location, GLsizei count, const GLfloat* v);
        typedef void (__stdcall *glUniformMatrix3fvFunction)(GLint, GLsizei, GLboolean, const GLfloat*);
        typedef void (__stdcall *glUniformMatrix4fvFunction)(GLint, GLsizei, GLboolean, const GLfloat*);
        typedef void (__stdcall *glUseProgramFunction)(GLuint);
        typedef void (__stdcall *glVertexAttribPointerFunction)(GLuint, GLint, GLenum, GLboolean, GLsizei, const void*);
        typedef void (__stdcall *glVertexAttribIPointerFunction)(GLuint, GLint, GLenum, GLsizei, const void*);
 
    public:
 
        /**
         * Initializes the library interface.
         * The windows mobile dynamic egl dll will be loaded and all function pointers will be extracted.<br>
         * Don't call any interface function before a successful initialization.
         */
        static bool initialize();
 
        /**
         * Releases the library interface and disposes all interface functions.
         */
        static void release();
 
    protected:
 
        /**
         * Initializes a function pointer.
         * @param function The function to be initialized, must point to nullptr
         * @param functionName The name of the function to initialize
         * @tparam T The data type of the function pointer
         */
        template <typename T>
        static void initializeFunction(T& function, const char* functionName);
 
    public:
 
        static glActiveTextureFunction glActiveTexture_;
        static glAttachShaderFunction glAttachShader_;
        static glBindBufferFunction glBindBuffer_;
        static glBindFramebufferFunction glBindFramebuffer_;
        static glBindVertexArrayFunction glBindVertexArray_;
        static glBufferDataFunction glBufferData_;
        static glCheckFramebufferStatusFunction glCheckFramebufferStatus_;
        static glClearDepthfFunction glClearDepthf_;
        static glCompileShaderFunction glCompileShader_;
        static glCompressedTexImage2DFunction glCompressedTexImage2D_;
        static glCreateProgramFunction glCreateProgram_;
        static glCreateShaderFunction glCreateShader_;
        static glDeleteBuffersFunction glDeleteBuffers_;
        static glDeleteFramebuffersFunction glDeleteFramebuffers_;
        static glDeleteProgramFunction glDeleteProgram_;
        static glDeleteShaderFunction glDeleteShader_;
        static glDeleteTexturesFunction glDeleteTextures_;
        static glDeleteVertexArraysFunction glDeleteVertexArrays_;
        static glDetachShaderFunction glDetachShader_;
        static glDrawArraysFunction glDrawArrays_;
        static glDrawElementsFunction glDrawElements_;
        static glEnableVertexAttribArrayFunction glEnableVertexAttribArray_;
        static glFramebufferTexture2DFunction glFramebufferTexture2D_;
        static glGenBuffersFunction glGenBuffers_;
        static glGenerateMipmapFunction glGenerateMipmap_;
        static glGenFramebuffersFunction glGenFramebuffers_;
        static glGenTexturesFunction glGenTextures_;
        static glGenVertexArraysFunction glGenVertexArrays_;
        static glGetAttribLocationFunction glGetAttribLocation_;
        static glGetProgramInfoLogFunction glGetProgramInfoLog_;
        static glGetProgramivFunction glGetProgramiv_;
        static glGetShaderInfoLogFunction glGetShaderInfoLog_;
        static glGetShaderivFunction glGetShaderiv_;
        static glGetStringiFunction glGetStringi_;
        static glGetUniformLocationFunction glGetUniformLocation_;
        static glIsProgramFunction glIsProgram_;
        static glLinkProgramFunction glLinkProgram_;
        static glReleaseShaderCompilerFunction glReleaseShaderCompiler_;
        static glShaderSourceFunction glShaderSource_;
        static glTexImage2DMultisampleFunction glTexImage2DMultisample_;
        static glUniform1fFunction glUniform1f_;
        static glUniform1fvFunction glUniform1fv_;
        static glUniform1iFunction glUniform1i_;
        static glUniform1uiFunction glUniform1ui_;
        static glUniform2fFunction glUniform2f_;
        static glUniform4fvFunction glUniform2fv_;
        static glUniform3fFunction glUniform3f_;
        static glUniform4fvFunction glUniform3fv_;
        static glUniform4fFunction glUniform4f_;
        static glUniform4fvFunction glUniform4fv_;
        static glUniformMatrix3fvFunction glUniformMatrix3fv_;
        static glUniformMatrix4fvFunction glUniformMatrix4fv_;
        static glUseProgramFunction glUseProgram_;
        static glVertexAttribPointerFunction glVertexAttribPointer_;
        static glVertexAttribIPointerFunction glVertexAttribIPointer_;
};
 
}
 
}
 
}
 
#endif // OCEAN_RENDERING_GLES_USE_DYNAMIC_LIBRARY
 
#endif // META_OCEAN_RENDERING_GLES_DYNAMIC_LIBRARY_H