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100 lines
3.7 KiB
100 lines
3.7 KiB
#.rst: |
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# Find OpenGL ES 3 |
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# ---------------- |
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# |
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# Finds the OpenGL ES 3 library. This module defines: |
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# |
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# OpenGLES3_FOUND - True if OpenGL ES 3 library is found |
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# OpenGLES3::OpenGLES3 - OpenGL ES 3 imported target |
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# |
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# Additionally these variables are defined for internal usage: |
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# |
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# OPENGLES3_LIBRARY - OpenGL ES 3 library |
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# OPENGLES3_INCLUDE_DIR - Include dir |
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# |
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# |
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# This file is part of Magnum. |
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# |
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# Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 |
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# Vladimír Vondruš <mosra@centrum.cz> |
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# |
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# Permission is hereby granted, free of charge, to any person obtaining a |
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# copy of this software and associated documentation files (the "Software"), |
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# to deal in the Software without restriction, including without limitation |
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# the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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# and/or sell copies of the Software, and to permit persons to whom the |
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# Software is furnished to do so, subject to the following conditions: |
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# |
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# The above copyright notice and this permission notice shall be included |
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# in all copies or substantial portions of the Software. |
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# |
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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# DEALINGS IN THE SOFTWARE. |
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# |
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# In Emscripten OpenGL ES 3 is linked automatically, thus no need to find the |
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# library. |
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if(NOT CORRADE_TARGET_EMSCRIPTEN) |
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find_library(OPENGLES3_LIBRARY NAMES |
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GLESv3 |
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# On some platforms (e.g. desktop emulation with Mesa or NVidia) ES3 |
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# support is provided in ES2 lib |
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GLESv2 |
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# ANGLE (CMake doesn't search for lib prefix on Windows) |
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libGLESv2 |
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# iOS |
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OpenGLES) |
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set(OPENGLES3_LIBRARY_NEEDED OPENGLES3_LIBRARY) |
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endif() |
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# Include dir |
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find_path(OPENGLES3_INCLUDE_DIR NAMES |
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GLES3/gl3.h |
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# iOS |
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ES3/gl.h) |
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include(FindPackageHandleStandardArgs) |
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find_package_handle_standard_args("OpenGLES3" DEFAULT_MSG |
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${OPENGLES3_LIBRARY_NEEDED} |
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OPENGLES3_INCLUDE_DIR) |
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if(NOT TARGET OpenGLES3::OpenGLES3) |
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if(OPENGLES3_LIBRARY_NEEDED) |
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# Work around BUGGY framework support on macOS |
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# http://public.kitware.com/pipermail/cmake/2016-April/063179.html |
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if(CORRADE_TARGET_APPLE AND ${OPENGLES3_LIBRARY} MATCHES "\\.framework$") |
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add_library(OpenGLES3::OpenGLES3 INTERFACE IMPORTED) |
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set_property(TARGET OpenGLES3::OpenGLES3 APPEND PROPERTY |
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INTERFACE_LINK_LIBRARIES ${OPENGLES3_LIBRARY}) |
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else() |
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add_library(OpenGLES3::OpenGLES3 UNKNOWN IMPORTED) |
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set_property(TARGET OpenGLES3::OpenGLES3 PROPERTY |
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IMPORTED_LOCATION ${OPENGLES3_LIBRARY}) |
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endif() |
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else() |
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add_library(OpenGLES3::OpenGLES3 INTERFACE IMPORTED) |
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endif() |
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set_property(TARGET OpenGLES3::OpenGLES3 PROPERTY |
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INTERFACE_INCLUDE_DIRECTORIES ${OPENGLES3_INCLUDE_DIR}) |
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# Emscripten needs a special flag to use WebGL 2. CMake 3.13 allows to set |
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# this via INTERFACE_LINK_OPTIONS, for older versions we modify the global |
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# CMAKE_EXE_LINKER_FLAGS inside FindMagnum.cmake. |
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if(CORRADE_TARGET_EMSCRIPTEN AND NOT CMAKE_VERSION VERSION_LESS 3.13) |
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# I could probably use target_link_options() here, but let's be |
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# consistent with the rest |
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set_property(TARGET OpenGLES3::OpenGLES3 APPEND PROPERTY |
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INTERFACE_LINK_OPTIONS "SHELL:-s USE_WEBGL2=1") |
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endif() |
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endif()
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