GL: detecting ARM Mali drivers on Android.

doc/changelog.dox

@@ -97,8 +97,9 @@ See also:
 -   New `--magnum-gpu-validation` @ref GL-Context-command-line "command-line option"
     and a corresponding environment variable to conveniently enable
     @gl_extension{KHR,debug} debug output
--   Detection of SwiftShader drivers with
-    @ref GL::Context::DetectedDriver::SwiftShader
+-   Detection of SwiftShader and ARM Mali drivers with
+    @ref GL::Context::DetectedDriver::SwiftShader and
+    @ref GL::Context::DetectedDriver::ArmMali
 
 @subsubsection changelog-latest-new-platform Platform libraries
 

src/Magnum/GL/Context.cpp

@@ -978,6 +978,9 @@ Debug& operator<<(Debug& debug, const Context::DetectedDriver value) {
         _c(SwiftShader)
         #endif
         #endif
+        #ifdef CORRADE_TARGET_ANDROID
+        _c(ArmMali)
+        #endif
         #undef _c
         /* LCOV_EXCL_STOP */
     }

src/Magnum/GL/Context.h

@@ -384,9 +384,18 @@ class MAGNUM_GL_EXPORT Context {
              *      contexts. Not detectable on WebGL, as browsers
              *      intentionally hide most of the driver information.
              */
-            SwiftShader = 1 << 6
+            SwiftShader = 1 << 6,
             #endif
             #endif
+
+            #if defined(CORRADE_TARGET_ANDROID) || defined(DOXYGEN_GENERATING_OUTPUT)
+            /**
+             * ARM Mali drivers on OpenGL ES.
+             * @partialsupport Available only on
+             *      @ref CORRADE_TARGET_ANDROID "Android".
+             */
+            ArmMali = 1 << 7
+            #endif
         };
 
         /**

src/Magnum/GL/Implementation/driverSpecific.cpp

@@ -339,6 +339,11 @@ auto Context::detectedDriver() -> DetectedDrivers {
     #endif
     #endif
 
+    #ifdef CORRADE_TARGET_ANDROID
+    if(vendor.find("ARM") != std::string::npos && renderer.find("Mali") != std::string::npos)
+        return *_detectedDrivers |= DetectedDriver::ArmMali;
+    #endif
+
     return *_detectedDrivers;
 }