Fix Windows build

Signed-off-by: falkTX <falktx@falktx.com>

dgl/src/OpenGL3.cpp

@@ -66,12 +66,15 @@ START_NAMESPACE_DGL
 # define DGL_EXT(PROC, func) static PROC func;
 DGL_EXT(PFNGLACTIVETEXTUREPROC,            glActiveTexture)
 DGL_EXT(PFNGLATTACHSHADERPROC,             glAttachShader)
+DGL_EXT(PFNGLBINDBUFFERPROC,               glBindBuffer)
+DGL_EXT(PFNGLBUFFERDATAPROC,               glBufferData)
 DGL_EXT(PFNGLCOMPILESHADERPROC,            glCompileShader)
 DGL_EXT(PFNGLCREATEPROGRAMPROC,            glCreateProgram)
 DGL_EXT(PFNGLCREATESHADERPROC,             glCreateShader)
 DGL_EXT(PFNGLDISABLEVERTEXATTRIBARRAYPROC, glDisableVertexAttribArray)
 DGL_EXT(PFNGLENABLEVERTEXATTRIBARRAYPROC,  glEnableVertexAttribArray)
 DGL_EXT(PFNGLGETATTRIBLOCATIONPROC,        glGetAttribLocation)
+DGL_EXT(PFNGLGENBUFFERSPROC,               glGenBuffers)
 DGL_EXT(PFNGLGETPROGRAMIVPROC,             glGetProgramiv)
 DGL_EXT(PFNGLGETSHADERIVPROC,              glGetShaderiv)
 DGL_EXT(PFNGLGETSHADERINFOLOGPROC,         glGetShaderInfoLog)
@@ -799,12 +802,15 @@ const GraphicsContext& Window::PrivateData::getGraphicsContext() const noexcept
       } DISTRHO_SAFE_ASSERT_RETURN(func != nullptr, contextCreationFail(gl3context));
 DGL_EXT(PFNGLACTIVETEXTUREPROC,            glActiveTexture)
 DGL_EXT(PFNGLATTACHSHADERPROC,             glAttachShader)
+DGL_EXT(PFNGLBINDBUFFERPROC,               glBindBuffer)
+DGL_EXT(PFNGLBUFFERDATAPROC,               glBufferData)
 DGL_EXT(PFNGLCOMPILESHADERPROC,            glCompileShader)
 DGL_EXT(PFNGLCREATEPROGRAMPROC,            glCreateProgram)
 DGL_EXT(PFNGLCREATESHADERPROC,             glCreateShader)
 DGL_EXT(PFNGLDISABLEVERTEXATTRIBARRAYPROC, glDisableVertexAttribArray)
 DGL_EXT(PFNGLENABLEVERTEXATTRIBARRAYPROC,  glEnableVertexAttribArray)
 DGL_EXT(PFNGLGETATTRIBLOCATIONPROC,        glGetAttribLocation)
+DGL_EXT(PFNGLGENBUFFERSPROC,               glGenBuffers)
 DGL_EXT(PFNGLGETPROGRAMIVPROC,             glGetProgramiv)
 DGL_EXT(PFNGLGETSHADERIVPROC,              glGetShaderiv)
 DGL_EXT(PFNGLGETSHADERINFOLOGPROC,         glGetShaderInfoLog)