#include "macros.hlsl"

COMMON {
	cbuffer CameraInfo 
	{
		float4x4 g_matViewProjection;
		float4 g_vViewPosition;
	};
	struct PerModelData
	{
		float4x4 m_matTranslation;
		float4x4 m_matRotation;
	}
	StructuredBuffer<PerModelData> g_modelData;
	struct PS_INPUT
	{
		float4 m_vScreenPosition: SV_POSITION;
		float4 m_vWorldPosition: POSITION;
		float4 m_vTexCoord: TEXCOORD0;
		float4 m_vNormal: NORMAL0;
	}
}
VS
{

	struct VS_INPUT
	{
		float3 m_vPosition: POSITION;
		float2 m_vTexCoord: TEXCOORD0;
		float3 m_vNormal: NORMAL0;
	}

	PS_INPUT vsMain( VS_INPUT input )
	{
		PS_INPUT output = {};
		output.m_vScreenPosition = float4(input.m_vPosition, 1);
		output.m_vScreenPosition = mul(
			output.m_vScreenPosition,
			g_modelData[0].m_matTranslation
		);
		output.m_vScreenPosition = mul(
			output.m_vScreenPosition,
			g_matViewProjection
		);
		output.m_vWorldPosition = mul(
			float4(input.m_vPosition, 1),
			g_modelData[0].m_matTranslation
		);
		output.m_vNormal = mul(
			float4(input.m_vNormal, 1),
			g_modelData[0].m_matRotation
		);
		output.m_vTexCoord = float4(input.m_vTexCoord, 0, 0);
		return output;
	}
}
PS
{
	#include "brdf.hlsl"

	float4 psMain( PS_INPUT input )
	{
	
		float4 vWorldSpacePosition = input.m_vNormal;
		BRDF_t brdf = {};
		brdf.m_vRayIn = normalize(g_vViewPosition.xyz-input.m_vWorldPosition.xyz);
		brdf.m_vRayOut = normalize(-input.m_vWorldPosition.xyz);
		brdf.m_vNormal = input.m_vNormal.xyz;
		brdf.m_fRoughness = 1;
		brdf.m_fMetalness = 1;

		return float4(brdf.BurleyDiffuse(), 1);
	}
}