Initialize vertex shader outputs to vertex shader attribute values

src/core/hle/D3D8/Direct3D9/CxbxVertexShaderTemplate.hlsl

@@ -288,14 +288,6 @@ float4 reverseScreenspaceTransform(float4 oPos)
 
 VS_OUTPUT main(const VS_INPUT xIn)
 {
-	// Output variables
-	float4 oPos, oD0, oD1, oB0, oB1, oT0, oT1, oT2, oT3;
-	oPos = oD0 = oD1 = oB0 = oB1 = oT0 = oT1 = oT2 = oT3 = float4(0, 0, 0, 1); // Pre-initialize w component of outputs to 1
-
-	// Single component outputs
-	float4 oFog, oPts; // x is write-only on Xbox. Use float4 as some games use incorrect masks
-	oFog = oPts = 0;
-
 	// Address (index) register
 	int1 a0 = 0;
 
@@ -319,6 +311,22 @@ VS_OUTPUT main(const VS_INPUT xIn)
 	init_v( 8); init_v( 9); init_v(10); init_v(11);
 	init_v(12); init_v(13); init_v(14); init_v(15);
 
+    // Output variables
+    // Initialize to vertex attribute values
+    // Note only the x component matters for oFog and oPts
+    // but we still use float4 as some games use incorrect masks
+    float4 oPos = v0;
+    float4 oD0 = v3;
+    float4 oD1 = v4;
+    float4 oFog = v5;
+    float4 oPts = v6;
+    float4 oB0 = v7;
+    float4 oB1 = v8;
+    float4 oT0 = v9;
+    float4 oT1 = v10;
+    float4 oT2 = v11;
+    float4 oT3 = v12;
+
 	// Xbox shader program)DELIMITER", /* This terminates the header raw string" // */
 
 R"DELIMITER(