Avoid warning and make local variable lower-case.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6000 dfc29bdd-3216-0410-991c-e03cc46cb475

media/cubeMapReflectionVS.hlsl

@@ -0,0 +1,38 @@
+int StyleUVW ; // 0 = specular reflection, 1 = diffuse reflection, 2 = use model vertex coordinates for uvw.
+float4x4 WorldViewProj;
+float4x4 World;
+float3 CameraPos;
+
+// Vertex Shader
+void VS( 
+	in float4 VPos	: POSITION,
+	in float3 VNorm	: NORMAL,
+	in float3 VTex  : TEXCOORD0,
+	out float4 outPos	: POSITION,
+	out float4 outTex	: TEXCOORD0 )
+{
+	// vertex position from model-space to view-space
+    outPos = mul( VPos, WorldViewProj );
+	
+	if ( StyleUVW == 0 )
+	{
+		// create ray from camera position to the vertex, in world space
+		float4 worldPos = mul(float4(VPos.x, VPos.y, VPos.z, 1.0), World);
+		float3 view = CameraPos - worldPos.xyz;
+		
+		float4 normWorld = normalize(mul(float4(VNorm.x, VNorm.y, VNorm.z, 0.0), World));	// TODO: when objects are scaled non-uniform we need to multiply by WorldInverseTranspose instead
+		
+		// compute the reflection vector, and assign it to texcoord 0		
+		outTex.xyz = reflect( -normalize(view), normWorld.xyz );
+	}
+	else if ( StyleUVW == 1 )
+	{
+		// just use the normal for the reflection vector
+		outTex.xyz = normalize(VNorm);
+	}
+	else if ( StyleUVW == 2 )
+	{
+		// use vertex-coordinates for texture coordinates
+		outTex.xyz = VPos.xyz;
+	}
+}