source: GTP/trunk/App/Demos/Illum/pathmap/DepthRenderStrategy.cpp @ 2197

#include "dxstdafx.h"
#include ".\depthrenderstrategy.h"
#include "PathMapEffect.h"
#include "Entity.h"
#include "SubEntity.h"

DepthRenderStrategy::DepthRenderStrategy(PathMapEffect* pathMapEffect)
:RenderStrategy(pathMapEffect)
{
}

void DepthRenderStrategy::applyTargets() const
{
        LPDIRECT3DDEVICE9 device = pathMapEffect->device;
        device->SetRenderTarget(0, pathMapEffect->fakeSurface);
        device->SetDepthStencilSurface( pathMapEffect->depthMapDepthStencilBuffer);
}

void DepthRenderStrategy::applyRenderState() const
{
        LPDIRECT3DDEVICE9 device = pathMapEffect->device;
        device->SetRenderState(D3DRS_COLORWRITEENABLE, 0);
        // render backfaces to avoid z-fighting
        device->SetRenderState(D3DRS_CULLMODE, D3DCULL_CW);

        device->Clear( 0, NULL, D3DCLEAR_ZBUFFER, D3DCOLOR_ARGB(255, 0, 0, 0), 1.0f, 0 );
}

void DepthRenderStrategy::applyTechnique() const
{
        pathMapEffect->effect->SetTechnique("Depth");
}

void DepthRenderStrategy::applyTransforms(Entity* entity) const
{
        LPD3DXEFFECT effect = pathMapEffect->effect;
        effect->SetMatrix("modelToProjMatrix", 
                &( entity->modelWorldTransform * *camera.GetViewMatrix() * *camera.GetProjMatrix() ) );
        effect->CommitChanges();
}


void DepthRenderStrategy::resetRenderState() const
{
        LPDIRECT3DDEVICE9 device = pathMapEffect->device;
        device->SetRenderState(D3DRS_CULLMODE, D3DCULL_CCW);
        device->SetRenderState(D3DRS_COLORWRITEENABLE, D3DCOLORWRITEENABLE_RED | D3DCOLORWRITEENABLE_GREEN | D3DCOLORWRITEENABLE_BLUE | D3DCOLORWRITEENABLE_ALPHA);
}