Axiom.RenderSystems.OpenGL.ATI.PixelShader.Optimize C# (CSharp) Метод

		void Optimize()
		{
			// perform some optimizations on ps.1.1 machine instructions
			if ( ( activeContexts & (int)ContextKeyPattern.PS_1_1 ) > 0 )
			{
				// need to check last few instructions to make sure r0 is set
				// ps.1.1 emulation uses r4 for r0 so last couple of instructions will probably require
				// changine destination register back to r0
				if ( lastInstructionPos < phase2ALU_mi.Count )
				{
					// first argument at mLastInstructionPos + 2 is destination register for all ps.1.1 ALU instructions
					phase2ALU_mi[ lastInstructionPos + 2 ] = Gl.GL_REG_0_ATI;
					// if was an alpha op only then modify second last instruction destination register
					if ( ( (MachineInstruction)phase2ALU_mi[ lastInstructionPos ] == MachineInstruction.AlphaOp1 ) ||
						( (MachineInstruction)phase2ALU_mi[ lastInstructionPos ] == MachineInstruction.AlphaOp2 ) ||
						( (MachineInstruction)phase2ALU_mi[ lastInstructionPos ] == MachineInstruction.AlphaOp3 ) )
					{

						phase2ALU_mi[ secondLastInstructionPos + 2 ] = Gl.GL_REG_0_ATI;
					}
				}// end if (mLastInstructionPos < mMachineInstructions.size())
			}// end if (mActiveContexts & ckp_PS_1_1)
		}