# ======================================================================================================================
#  fennec, a free and open source game engine
#  Copyright © 2025  Medusa Slockbower
#
#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program.  If not, see <https://www.gnu.org/licenses/>.
# ======================================================================================================================

find_package(OpenGL)

if(TARGET OpenGL::GL) # Core OpenGL Desktop Profile
    list(APPEND FENNEC_LINK_LIBRARIES OpenGL::OpenGL)
    list(APPEND FENNEC_COMPILE_DEFINITIONS FENNEC_GRAPHICS_OPENGL=1)

elseif(TARGET OpenGL::GLES3) # OpenGL for Embedded Systems 3
    list(APPEND FENNEC_LINK_LIBRARIES OpenGL::GLES3)
    list(APPEND FENNEC_COMPILE_DEFINITIONS FENNEC_GRAPHICS_GLES3=1)

elseif (TARGET OpenGL::GLES2) # OpenGL for Embedded Systems 2
    list(APPEND FENNEC_LINK_LIBRARIES OpenGL::GLES2)
    list(APPEND FENNEC_COMPILE_DEFINITIONS FENNEC_GRAPHICS_GLES2=1)

else()
    message(FATAL_ERROR "No Suitable OpenGL implementation found.")
endif()

if(FENNEC_GRAPHICS_WANT_EGL)
    if(NOT TARGET OpenGL::EGL)
        message(FATAL_ERROR "EGL Library not found.")
    endif()

    list(APPEND FENNEC_LINK_LIBRARIES OpenGL::EGL)
    list(APPEND FENNEC_COMPILE_DEFINITIONS FENNEC_GRAPHICS_EGL=1)
    list(APPEND FENNEC_EXTRA_SOURCES
            include/fennec/platform/opengl/egl/context.h
            include/fennec/platform/opengl/egl/surface.h
    )
endif()