Merge pull request #3419 from Sonicadvance1/QC_driverdetails

Add a comment to DriverDetails about Qualcomm failing our alpha tests.

Source/Core/VideoCommon/DriverDetails.cpp

@@ -45,6 +45,7 @@ namespace DriverDetails
 		{OS_ALL,    VENDOR_QUALCOMM, DRIVER_QUALCOMM,     -1, BUG_BROKENBUFFERSTREAM,  -1.0, -1.0, true},
 		{OS_ALL,    VENDOR_QUALCOMM, DRIVER_QUALCOMM,     -1, BUG_BROKENNEGATEDBOOLEAN,-1.0, -1.0, true},
 		{OS_ALL,    VENDOR_QUALCOMM, DRIVER_QUALCOMM,     -1, BUG_BROKENGLES31,        -1.0, -1.0, true},
+		{OS_ALL,    VENDOR_QUALCOMM, DRIVER_QUALCOMM,     -1, BUG_BROKENALPHATEST,     -1.0, -1.0, true},
 		{OS_ALL,    VENDOR_ARM,      DRIVER_ARM,          -1, BUG_BROKENBUFFERSTREAM,  -1.0, -1.0, true},
 		{OS_ALL,    VENDOR_ARM,      DRIVER_ARM,          -1, BUG_BROKENVSYNC,         -1.0, -1.0, true},
 		{OS_ALL,    VENDOR_IMGTEC,   DRIVER_IMGTEC,       -1, BUG_BROKENBUFFERSTREAM,  -1.0, -1.0, true},

Source/Core/VideoCommon/DriverDetails.h

@@ -169,6 +169,17 @@ namespace DriverDetails
 		// We can't actually detect what the driver version is on Android, so until the driver version lands that displays the version in
 		// the GL_VERSION string, we will have to force vsync to be enabled at all times.
 		BUG_BROKENVSYNC,
+
+		// Bug: Adreno has a broken alpha test
+		// Affected Devices: Adreno
+		// Started Version: v103 confirmed (v95 potentially as well?)
+		// Ended Version: -1
+		// The Qualcomm video drivers have somehow managed to hit a situation where in a certain situation the alpha test
+		// always evaluates to false for some reason.
+		// This has yet to be tracked as to why they fail at such a simple check
+		// Example alpha test path
+		// if(( (prev.a >  alphaRef.r) && (prev.a >  alphaRef.g)) == false) {
+		BUG_BROKENALPHATEST,
 	};
 
 	// Initializes our internal vendor, device family, and driver version