Only apply the enable mask on instructions requiring predication.

src/GLES2/libEGL/main.cpp

@@ -115,6 +115,7 @@ extern "C" BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved
     switch(reason)
     {
     case DLL_PROCESS_ATTACH:
+	//	MessageBoxA(0, "Attach debugger now and press OK", "SwiftShader loaded", MB_OK);
         return eglAttachProcess();
         break;
     case DLL_THREAD_ATTACH:

src/Shader/PixelRoutine.cpp

@@ -4007,7 +4007,7 @@ namespace sw
 					if(dst.w) d.w = Min(d.w, Float4(1.0f));
 				}
 
-				if(shader->containsDynamicBranching())
+				if(instruction->isPredicated())
 				{
 					Vector4f pDst;   // FIXME: Rename
 

src/Shader/Shader.cpp

@@ -1024,6 +1024,15 @@ namespace sw
 		return opcode == OPCODE_ENDLOOP || opcode == OPCODE_ENDREP || opcode == OPCODE_ENDWHILE;
 	}
 
+	bool Shader::Instruction::isPredicated() const
+	{
+		return predicate ||
+		       analysisBranch ||
+		       analysisBreak ||
+		       analysisContinue ||
+		       analysisLeave;
+	}
+
 	Shader::Shader() : serialID(serialCounter++)
 	{
 		usedSamplers = 0;

src/Shader/Shader.hpp

@@ -430,6 +430,8 @@ namespace sw
 			bool isLoop() const;
 			bool isEndLoop() const;
 
+			bool isPredicated() const;
+
 			Opcode opcode;
 			
 			union

src/Shader/VertexProgram.cpp

@@ -283,7 +283,7 @@ namespace sw
 					if(dst.w) d.w = Min(d.w, Float4(1.0f));
 				}
 
-				if(shader->containsDynamicBranching())
+				if(instruction->isPredicated())
 				{
 					Vector4f pDst;   // FIXME: Rename