#include "Shader_BumpSpecV.h"
#include "SceneManager.h"

CShader_BumpSpecV::CShader_BumpSpecV() {

	// Vertex Shader Declare setting
	
	DWORD vertexshaderdeclaration[]=
	{
		D3DVSD_STREAM(0),
		(D3DVSD_REG(0, D3DVSDT_FLOAT3)), // vertex position
		(D3DVSD_REG(1, D3DVSDT_FLOAT3)), // vertex normal
		(D3DVSD_REG(3, D3DVSDT_FLOAT2)), // vertex texture  coord
		(D3DVSD_REG(5, D3DVSDT_FLOAT3)), // S
		(D3DVSD_REG(6, D3DVSDT_FLOAT3)), // T
		D3DVSD_END()
	};
	
	// Create Vertex Shader
	
	CreateVertexShader("c:/MP-project/Shaders/1_BumpDiffSpec.vsh",vertexshaderdeclaration);
	m_fBumpScale = 1.0f;

}
CShader_BumpSpecV::~CShader_BumpSpecV() {

}
void CShader_BumpSpecV::Apply() {
	CSceneManager::GetDevice()->SetVertexShader(m_dwVertexShader);
	SetupVertexShaderConstants();
}

void CShader_BumpSpecV::SetupVertexShaderConstants() {

	LPDIRECT3DDEVICE8 lpDevice = CSceneManager::GetDevice();
	lpDevice->SetVertexShaderConstant(CV_BUMP_SCALE, D3DXVECTOR4(0.0f, 0.0f, 0.0f, m_fBumpScale), 1);

	// Shader constant setting
/* *************
	LPDIRECT3DDEVICE8 lpDevice = CSceneManager::GetDevice();

	lpDevice->SetVertexShaderConstant(CV_ZERO, D3DXVECTOR4(0.0f, 0.0f, 0.0f, 0.0f), 1);
	lpDevice->SetVertexShaderConstant(CV_ONE, D3DXVECTOR4(1.0f, 1.0f, 1.0f, 1.0f), 1);
	lpDevice->SetVertexShaderConstant(CV_HALF, D3DXVECTOR4(0.5f, 0.5f, 0.5f, 0.5f), 1);

	// Matrix Set
	D3DXMATRIX matWorld,matView,matProject;
	lpDevice->GetTransform(D3DTS_WORLD,&matWorld);
	lpDevice->GetTransform(D3DTS_VIEW,&matView);
	lpDevice->GetTransform(D3DTS_PROJECTION,&matProject);

	
	D3DXMATRIX matTemp;

	D3DXMATRIX matWorldView;
	D3DXMATRIX matInvWorldView;

	D3DXMATRIX matWorldViewProj;

	D3DXMATRIX matInvWorld;

	D3DXMatrixMultiply(&matTemp, &matWorld, &matView);
	D3DXMatrixMultiply(&matWorldViewProj, &matTemp, &matProject);
	D3DXMatrixMultiply(&matWorldView, &matWorld, &matView);
	D3DXMatrixInverse(&matInvWorld, NULL, &matWorld);
	
	D3DXMatrixInverse(&matInvWorldView, NULL, &matWorldView);

	// Set World Camera Pos
	matrix *pmatPos = CSceneManager::m_ViewCamera->GetMatPosition();
	
	D3DXVECTOR3 vecCamera3 = D3DXVECTOR3(pmatPos->_41,pmatPos->_42,pmatPos->_43);
	D3DXVECTOR4 vecCamera4 = D3DXVECTOR4(vecCamera3.x,vecCamera3.y,vecCamera3.z,0.0f);

	lpDevice->SetVertexShaderConstant(CV_EYE_POS_WORLD, vecCamera4, 1);


	// Projection to clip space
	D3DXMatrixTranspose(&matWorldViewProj, &matWorldViewProj);
	lpDevice->SetVertexShaderConstant(CV_WORLDVIEWPROJ_0, &matWorldViewProj(0, 0), 4);
	D3DXMatrixTranspose(&matWorldViewProj, &matWorldViewProj);

	// Transform to eye space
	D3DXMatrixTranspose(&matWorldView, &matWorldView);
	lpDevice->SetVertexShaderConstant(CV_WORLDVIEW_0, &matWorldView(0, 0), 4);
	D3DXMatrixTranspose(&matWorldView, &matWorldView);

	// Transform to world space
	D3DXMatrixTranspose(&matWorld, &matWorld);
	lpDevice->SetVertexShaderConstant(CV_WORLD_0, &matWorld(0, 0), 4);
	D3DXMatrixTranspose(&matWorld, &matWorld);

	// Transform for normals
	lpDevice->SetVertexShaderConstant(CV_WORLDVIEWIT_0, &matInvWorldView(0, 0), 1);
	lpDevice->SetVertexShaderConstant(CV_WORLDVIEWIT_1, &matInvWorldView(1, 0), 1);
	lpDevice->SetVertexShaderConstant(CV_WORLDVIEWIT_2, &matInvWorldView(2, 0), 1);

	// Set BumpScale
	lpDevice->SetVertexShaderConstant(CV_BUMP_SCALE, D3DXVECTOR4(0.0f, 0.0f, 0.0f, m_fBumpScale), 1);
	lpDevice->SetVertexShaderConstant(21, D3DXVECTOR4(1.0f,1.0f,1.0f,0.0f), 1);
 ********************** */	// Set Light Directiom
/*	
	static int inc = 0;

	static float fLightDistance = 0.95f;
	D3DXVECTOR3 vecLightDirection;
	D3DMATRIX *pmatV = CSceneManager::m_ViewCamera->GetMatView();
	
	D3DXVECTOR3 vecFwd = D3DXVECTOR3(pmatV->_41,pmatV->_42,pmatV->_43) - vecCamera3;

	
	vecLightDirection = -vecFwd;
	D3DXVec3Normalize(&vecLightDirection,&vecLightDirection);
	
	D3DXVECTOR4 vecLight = D3DXVECTOR4(vecLightDirection.x,vecLightDirection.y,vecLightDirection.z,1.0f);
	

	// Light Direction Setting
	lpDevice->SetVertexShaderConstant(21, vecLight, 1);
*/

}