/*
  ==============================================================================

   This file is part of the JUCE 7 technical preview.
   Copyright (c) 2022 - Raw Material Software Limited

   You may use this code under the terms of the GPL v3
   (see www.gnu.org/licenses).

   For the technical preview this file cannot be licensed commercially.

   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.

  ==============================================================================
*/

namespace juce
{

/** @internal This macro contains a list of GL extension functions that need to be dynamically loaded on Windows/Linux.
    @see OpenGLExtensionFunctions
*/
#define JUCE_GL_BASE_FUNCTIONS \
    X (glActiveTexture) \
    X (glBindBuffer) \
    X (glDeleteBuffers) \
    X (glGenBuffers) \
    X (glBufferData) \
    X (glBufferSubData) \
    X (glCreateProgram) \
    X (glDeleteProgram) \
    X (glCreateShader) \
    X (glDeleteShader) \
    X (glShaderSource) \
    X (glCompileShader) \
    X (glAttachShader) \
    X (glLinkProgram) \
    X (glUseProgram) \
    X (glGetShaderiv) \
    X (glGetShaderInfoLog) \
    X (glGetProgramInfoLog) \
    X (glGetProgramiv) \
    X (glGetUniformLocation) \
    X (glGetAttribLocation) \
    X (glVertexAttribPointer) \
    X (glEnableVertexAttribArray) \
    X (glDisableVertexAttribArray) \
    X (glUniform1f) \
    X (glUniform1i) \
    X (glUniform2f) \
    X (glUniform3f) \
    X (glUniform4f) \
    X (glUniform4i) \
    X (glUniform1fv) \
    X (glUniformMatrix2fv) \
    X (glUniformMatrix3fv) \
    X (glUniformMatrix4fv) \
    X (glBindAttribLocation)

/** @internal This macro contains a list of GL extension functions that need to be dynamically loaded on Windows/Linux.
    @see OpenGLExtensionFunctions
*/
#define JUCE_GL_EXTENSION_FUNCTIONS \
    X (glIsRenderbuffer) \
    X (glBindRenderbuffer) \
    X (glDeleteRenderbuffers) \
    X (glGenRenderbuffers) \
    X (glRenderbufferStorage) \
    X (glGetRenderbufferParameteriv) \
    X (glIsFramebuffer) \
    X (glBindFramebuffer) \
    X (glDeleteFramebuffers) \
    X (glGenFramebuffers) \
    X (glCheckFramebufferStatus) \
    X (glFramebufferTexture2D) \
    X (glFramebufferRenderbuffer) \
    X (glGetFramebufferAttachmentParameteriv)

/** @internal This macro contains a list of GL extension functions that need to be dynamically loaded on Windows/Linux.
    @see OpenGLExtensionFunctions
*/
#define JUCE_GL_VERTEXBUFFER_FUNCTIONS \
    X (glGenVertexArrays) \
    X (glDeleteVertexArrays) \
    X (glBindVertexArray)

/** This class contains a generated list of OpenGL extension functions, which are either dynamically loaded
    for a specific GL context, or simply call-through to the appropriate OS function where available.

    This class is provided for backwards compatibility. In new code, you should prefer to use
    functions from the juce::gl namespace. By importing all these symbols with
    `using namespace ::juce::gl;`, all GL enumerations and functions will be made available at
    global scope. This may be helpful if you need to write code with C source compatibility, or
    which is compatible with a different extension-loading library.
    All the normal guidance about `using namespace` should still apply - don't do this in a header,
    or at all if you can possibly avoid it!

    @tags{OpenGL}
*/
struct OpenGLExtensionFunctions
{
    //==============================================================================
   #ifndef DOXYGEN
    [[deprecated ("A more complete set of GL commands can be found in the juce::gl namespace. "
                  "You should use juce::gl::loadFunctions() to load GL functions.")]]
    static void initialise();
   #endif

   #if JUCE_WINDOWS && ! defined (DOXYGEN)
    typedef char GLchar;
    typedef pointer_sized_int GLsizeiptr;
    typedef pointer_sized_int GLintptr;
   #endif

   #define X(name) static decltype (::juce::gl::name)& name;
    JUCE_GL_BASE_FUNCTIONS
    JUCE_GL_EXTENSION_FUNCTIONS
    JUCE_GL_VERTEXBUFFER_FUNCTIONS
   #undef X
};

enum MissingOpenGLDefinitions
{
   #if JUCE_ANDROID
    JUCE_RGBA_FORMAT                = ::juce::gl::GL_RGBA,
   #else
    JUCE_RGBA_FORMAT                = ::juce::gl::GL_BGRA_EXT,
   #endif
};

} // namespace juce