Added more shader instructions, including BFE, BRA (partial), FMNMX, ISCADD, SHL, LD_C, some shader related fixes, added support for texture component selection

Ryujinx.Graphics/Gal/GalTextureSource.cs

@@ -0,0 +1,13 @@
+namespace Ryujinx.Graphics.Gal
+{
+    public enum GalTextureSource
+    {
+        Zero     = 0,
+        Red      = 2,
+        Green    = 3,
+        Blue     = 4,
+        Alpha    = 5,
+        OneInt   = 6,
+        OneFloat = 7
+    }
+}