#include <config.cg>
#include <globals.cg>

struct VertexOut
{
	FragmentParameters params;
	float4             screenSpacePosition : POSITION;
};

VertexOut  vmain(__in(float4,     localSpacePosition, POSITION)
                 __in_opt(half4,  vertexColor,        COLOR)
                 __in_opt(float3, localSpaceNormal,   NORMAL)
                 __in_opt(float4, localSpaceTangent,  SEMANTIC_TANGENT)
                 __in_opt(float4, vertexTexcoord0,    TEXCOORD0)
                 __in_opt(float4, vertexTexcoord1,    TEXCOORD1)
                 __in_opt(float4, vertexTexcoord2,    TEXCOORD2)
                 __in_opt(float4, vertexTexcoord3,    TEXCOORD3)
                 , __in(float3,   instancePosition,   TEXCOORD8)
                 , __in(float4,   instanceVelocity,   TEXCOORD9)
                 )
{
	VertexOut vout;
	
	float4x4 modelMatrix = g_modelMatrix;
/*
#if RENDERER_INSTANCED
	modelMatrix = transpose(float4x4(float4(instanceNormalX, 0), float4(instanceNormalY, 0), float4(instanceNormalZ, 0), float4(instanceOffset, 1)));
#else
	modelMatrix = g_modelMatrix;
#endif*/

	float4 worldSpacePos 		 = float4(0.05,0.05,0.05,1)*localSpacePosition.xyzw;//mul( modelMatrix, localSpacePosition);
	
	worldSpacePos.xyz += instancePosition.xyz;
	
	
	float4x4 vpm                  = mul(g_projMatrix, g_viewMatrix);
	vout.screenSpacePosition       = mul(vpm, worldSpacePos);
	
	vout.params.worldSpacePosition = mul(modelMatrix, localSpacePosition).xyz;
	vout.params.worldSpaceNormal   = normalize(mul(modelMatrix, float4(localSpaceNormal,    0)).xyz);
	vout.params.worldSpaceTangent  = normalize(mul(modelMatrix, float4(localSpaceTangent.xyz, 0)).xyz);
	vout.params.worldSpaceBinormal = cross(vout.params.worldSpaceNormal, vout.params.worldSpaceTangent) * localSpaceTangent.w;
	
	vout.params.texcoord0   = vertexTexcoord0;
	vout.params.texcoord1   = vertexTexcoord1;
	vout.params.texcoord2   = vertexTexcoord2;
#if !defined (RENDERER_WIN8ARM)		
	vout.params.texcoord3   = vertexTexcoord3;
#endif	
	
/*
	vout.params.color.xyz = saturate((instanceVelocity.xyz / float3(6,6,6)) + float3(1,1,1));
	vout.params.color.w = 1;
	
	if(instanceVelocity.w > 0.75)
		vout.params.color       *= float4(1,0,0,1);
	else if(instanceVelocity.w > 0.5)
		vout.params.color       *= float4(1,0,1,1);
	else if(instanceVelocity.w > 0.25)		
		vout.params.color       *= float4(0,1,1,1);
	else
		vout.params.color       *= float4(0,0,1,1);
		
*/
	//simpler colors for debugging
	vout.params.color.xyz = float3(1*instanceVelocity.w,0,0);
	vout.params.color.w = 1;

	return vout;
}