diff options
Diffstat (limited to 'src/gui/opengl/qopengl.h')
| -rw-r--r-- | src/gui/opengl/qopengl.h | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/src/gui/opengl/qopengl.h b/src/gui/opengl/qopengl.h index ef5ab9aa65..f0f19a5a85 100644 --- a/src/gui/opengl/qopengl.h +++ b/src/gui/opengl/qopengl.h @@ -67,8 +67,13 @@ #if defined(QT_OPENGL_ES_2) # if defined(Q_OS_MAC) // iOS -# include <OpenGLES/ES2/gl.h> -# include <OpenGLES/ES2/glext.h> +# if defined(QT_OPENGL_ES_3) +# include <OpenGLES/ES3/gl.h> +# include <OpenGLES/ES3/glext.h> +# else +# include <OpenGLES/ES2/gl.h> +# include <OpenGLES/ES2/glext.h> +# endif /* OES_EGL_image_external is not included in the Apple provided @@ -79,7 +84,28 @@ typedef void* GLeglImageOES; # else // "uncontrolled" ES2 platforms -# include <GLES2/gl2.h> + +// In "es2" builds (QT_OPENGL_ES_2) additional defines indicate if ES +// 3.0 or higher is available. In this case include the corresponding +// header. These are backwards compatible and it should be safe to +// include headers on top of each other, meaning that applications can +// include gl2.h even if gl31.h gets included here. + +// This compile time differentation is important inside Qt because, +// unlike desktop GL, GLES is different when it comes to versioning +// and extensions: Standard functions that are new in a given version +// are always available in a version-specific header and are not +// guaranteed to be dynamically resolvable via eglGetProcAddress (and +// are typically not available as extensions even if they were part of +// an extension for a previous version). + +# if defined(QT_OPENGL_ES_3_1) +# include <GLES3/gl31.h> +# elif defined(QT_OPENGL_ES_3) +# include <GLES3/gl3.h> +# else +# include <GLES2/gl2.h> +#endif /* Some GLES2 implementations (like the one on Harmattan) are missing the |