Merge pull request #263 from Sonicadvance1/DetermineMaliVersion

Add Mali driver version check and support of checking for Mali-T7xx

1 files changed, 21 insertions, 2 deletions

diff --git a/Source/Core/VideoBackends/OGL/Render.cpp b/Source/Core/VideoBackends/OGL/Render.cpp
index 2b7a081fb3..e98c2b8b7a 100644
--- a/Source/Core/VideoBackends/OGL/Render.cpp
+++ b/Source/Core/VideoBackends/OGL/Render.cpp
@@ -290,10 +290,29 @@ void InitDriverInfo()
 		}
 		break;
 		case DriverDetails::VENDOR_ARM:
-			if (std::string::npos != srenderer.find("Mali-T6"))
-				driver = DriverDetails::DRIVER_ARM_T6XX;
+			// Currently the Mali-T line has two families in it.
+			// Mali-T6xx and Mali-T7xx
+			// These two families are similar enough that they share bugs in their drivers.
+			if (std::string::npos != srenderer.find("Mali-T"))
+			{
+				driver = DriverDetails::DRIVER_ARM_TXXX;
+				// Mali drivers provide no way to explicitly find out what video driver is running.
+				// This is similar to how we can't find the Nvidia driver version in Windows.
+				// Good thing is that ARM introduces a new video driver about once every two years so we can
+				// find the driver version by the features it exposes.
+				// r2p0 - No OpenGL ES 3.0 support (We don't support this)
+				// r3p0 - OpenGL ES 3.0 support
+				// r4p0 - Supports 'GL_EXT_shader_pixel_local_storage' extension.
+
+				if (GLExtensions::Supports("GL_EXT_shader_pixel_local_storage"))
+					version = 400;
+				else
+					version = 300;
+			}
 			else if (std::string::npos != srenderer.find("Mali-4"))
+			{
 				driver = DriverDetails::DRIVER_ARM_4XX;
+			}
 		break;
 		case DriverDetails::VENDOR_MESA:
 		{