It adds support for OpenGL ES renderer, which is needed for Android port and for running STK on other embedded devices such as Raspberry Pi.
Currently it works in two ways:
- Shader-based pipeline, which requires OpenGL ES 3.0 (Android >= 4.3)
- Fallback to irrlicht-based fixed pipeline that needs OpenGL ES 2.0. The fixed pipeline generally works, but it is affected by the same issues as our OpenGL 2.1 fixed pipeline renderer.
I tried to modify our OpenGL renderer as little as possible to avoid regressions. The only one major change is that we are now using the "#stk_include" directive in shaders instead of linking multiple shaders into one program.
Currently it works only on linux. The Android port needs some refactoring. In theory it should be possible to make it working on Windows, but we would need some OpenGL ES SDK, or maybe modified libglew.
At this stage it is playable with current mesa drivers. I tested it on intel graphics card and I didn't notice any issues.
On Android only the OpenGL ES 2.0 renderer with fixed pipeline has been tested for now.
* irrlicht: Fix harmless typo when setting CMAKE_CXX_FLAGS
The CMAKE_CXX_FLAGS set should be based on previously set
CMAKE_CXX_FLAGS (instead of C flags). This is currently
harmless because CMAKE_CXX_FLAGS is not previously set.
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
* irrlicht: Get rid of unprefixed cflags
Cross-building requires proper include paths. This commit
removes the unprefixed -I/usr/X11R6/include in irrlicht cflags,
replacing it with a proper CMake module.
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
* irrlicht: Fix boolean return type for jpeglib's callback
Building on certain toolchains can fail due to returning an integer
instead of TRUE. In any case, only {TRUE,FALSE} should be used
as 'boolean' jpeglib type. Fix this by returning TRUE.
CImageLoaderJPG.cpp: In static member function 'static boolean
irr::video::CImageLoaderJPG::fill_input_buffer(j_decompress_ptr)':
CImageLoaderJPG.cpp:69:9: error: invalid conversion from 'int' to 'boolean'
[-fpermissive]
Signed-off-by: Romain Naour <romain.naour@smile.fr>
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
