#include "dxstdafx.h"
#include ".\prmrenderstrategy.h"

PRMRenderStrategy::PRMRenderStrategy(PathMapEffect* pathMapEffect, Radion* radion)
:RenderStrategy(pathMapEffect)
{
	this->radion = radion;
}

void PRMRenderStrategy::applyTargets()
{
}

void PRMRenderStrategy::applyRenderState()
{
	LPDIRECT3DDEVICE9 device = pathMapEffect->device;
	// blend-add contribution of virtual light source to PRM
	device->SetRenderTarget(0, prmSurface);
	device->SetDepthStencilSurface(NULL);
	device->SetViewport(&vp);
	device->SetRenderState(D3DRS_CULLMODE,  D3DCULL_NONE);
	device->SetRenderState(D3DRS_ALPHABLENDENABLE,  true);
	device->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_ONE);
	device->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_ONE);
	device->SetRenderState(D3DRS_BLENDOP, D3DBLENDOP_ADD);
	device->SetRenderState(D3DRS_ZENABLE, D3DZB_FALSE);

}

void PRMRenderStrategy::applyTechnique()
{
	LPD3DXEFFECT effect = pathMapEffect->effect;

	effect->SetTechnique("BushToAtlas");
	effect->SetFloatArray("lightPos", (float*)&bushRadions[ir].position, 3);
	effect->SetFloatArray("lightDir", (float*)&bushRadions[ir].normal, 3);
	effect->SetTexture("depthMap", pathMapEffect->depthMapTexture);

	static float opttme[9] = {0.5f, 0.0f, 0.0f,
							0.0f, -0.5f, 0.0f,
							0.5f + (0.5f / DEPTHMAPRES), 0.5f + (0.5f / DEPTHMAPRES), 1.0f};
	effect->SetFloatArray("occProjToTexMatrix", opttme, 9);
	effect->SetMatrix("occWorldToProjMatrix", &(*radionCamera.GetViewMatrix() * *radionCamera.GetProjMatrix()));
}

void PRMRenderStrategy::applyTransforms(Entity* entity)
{
}

void PRMRenderStrategy::applyTextures(SubEntity* subEntity)
{


	float acs = 4096.0f / nRadions;
	if(acs <= 0.25f || acs > 1000.0f)
		bool kamugaz = true;
	effect->SetFloat("alphaCounterStep", acs);

	Vector bb0 = this->rayTraceEntity->bbox.minPoint;
	Vector bb1 = this->rayTraceEntity->bbox.maxPoint;
	//effect->SetFloat("cutNearness2", (bb1 - bb0).norm2() / 200.0f);
	float nne = 5.0f / bushRadions[ir].probability;
	float onne = (bb1 - bb0).norm2() / 200.0f;
	effect->SetFloat("cutNearness2", nne);
	//effect->SetFloat("cutNearness2", 0.0f);
	
	//set global params


	effect->SetMatrix("modelToWorldMatrix", &(this->modelWorldTransform));
	effect->SetMatrix("inverseTransposedModelToWorldMatrix", &(this->inverseTransposedModelWorldTransform));
	Vector scaledPower = bushRadions[ir].radiance * scaleFactor;
	hr=effect->SetFloatArray("lightPower", (float*)&scaledPower, 3);
}


void PRMRenderStrategy::resetRenderState()
{
	LPDIRECT3DDEVICE9 device = pathMapEffect->device;
}