Pass the sampling lod/bias as a separate parameter.

This is necessary for cube or 2D array shadow texture sampling
functions which need the fourth texture coordinate component for
depth comparison while also taking a lod or bias parameter.

Change-Id: I1e1399f134e22cecaff97a224df2c13c57ba3a40
Reviewed-on: https://swiftshader-review.googlesource.com/13551
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>

src/Shader/PixelShader.cpp

diff --git a/src/Shader/PixelShader.cpp b/src/Shader/PixelShader.cpp
index 9e36be6..b8b320e 100644
--- a/src/Shader/PixelShader.cpp
+++ b/src/Shader/PixelShader.cpp
@@ -314,8 +314,11 @@
 						case Shader::OPCODE_TEX:
 						case Shader::OPCODE_TEXLDD:
 						case Shader::OPCODE_TEXLDL:
+						case Shader::OPCODE_TEXLOD:
+						case Shader::OPCODE_TEXBIAS:
 						case Shader::OPCODE_TEXOFFSET:
-						case Shader::OPCODE_TEXLDLOFFSET:
+						case Shader::OPCODE_TEXOFFSETBIAS:
+						case Shader::OPCODE_TEXLODOFFSET:
 						case Shader::OPCODE_TEXELFETCH:
 						case Shader::OPCODE_TEXELFETCHOFFSET:
 						case Shader::OPCODE_TEXGRAD: