void DXPointLight::DrawShadowMap(LPDIRECT3DDEVICE9 device, LPD3DXEFFECT effect, void (*drawcallback)(LPD3DXEFFECT))
{
if( !shadowmap || !needsredraw )
return;
LPDIRECT3DSURFACE9 surface = NULL;
D3DXMATRIX vp;
effect->SetVector("lightPos", (D3DXVECTOR4*)&position);
for( int j = 0; j < 6; ++j )
{
GetViewProjMatrix(vp, j);
effect->SetMatrix("matViewProj", &vp);
shadowmap->GetCubeMapSurface((D3DCUBEMAP_FACES)j, 0, &surface);
device->SetRenderTarget(0, surface);
device->Clear(0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER, 0xff000000, 1.0f, 0);
drawcallback(effect);
surface->Release();
}
if( shadowtype == Static )
needsredraw = false;
}
bool Unproject( vec3 * pOutRay, const ivec2 & vScreen )
{
if ( NULL == pOutRay )
return false;
mat4 mInvViewProj( GetViewProjMatrix() );
// inverting ViewProj matrix
if ( false == mInvViewProj.Inverse())
return false;
// Позиция курсора считается от левого верхнего угла
// а нужно от левого нижнего
const float fScreenY = float(m_vViewport.w - vScreen.y);
vec4 vNearPoint(
( 2 * (float)vScreen.x / m_vViewport.z ) - 1, // Map to range -1 to 1
( 2 * (float)fScreenY / m_vViewport.w ) - 1, // Map to range -1 to 1
-1, 1 ); // Near plane
vec4 vFarPoint(
( 2 * (float)vScreen.x / m_vViewport.z ) - 1, // Map to range -1 to 1
( 2 * (float)fScreenY / m_vViewport.w ) - 1, // Map to range -1 to 1
1, 1 ); // Far plane
// transforming form screen_space to world_space
vNearPoint.Multiply( mInvViewProj );
if ( 0.f == vNearPoint.w )
return false;
// transforming form screen_space to world_space
vFarPoint.Multiply( mInvViewProj );
if ( 0.f == vFarPoint.w )
return false;
vNearPoint.w = 1.f / vNearPoint.w;
vFarPoint.w = 1.f / vFarPoint.w;
pOutRay[ 0 ].Set( vNearPoint.x * vNearPoint.w,
vNearPoint.y * vNearPoint.w,
vNearPoint.z * vNearPoint.w );
pOutRay[ 1 ].Set( vFarPoint.x * vFarPoint.w,
vFarPoint.y * vFarPoint.w,
vFarPoint.z * vFarPoint.w );
return true;
}
void DXDirectionalLight::DrawShadowMap(LPDIRECT3DDEVICE9 device, LPD3DXEFFECT effect, void (*drawcallback)(LPD3DXEFFECT))
{
if( !shadowmap || !needsredraw )
return;
LPDIRECT3DSURFACE9 surface = NULL;
D3DXMATRIX vp;
GetViewProjMatrix(vp, D3DXVECTOR3(0, 0, 0));
effect->SetVector("lightPos", &direction);
effect->SetMatrix("matViewProj", &vp);
shadowmap->GetSurfaceLevel(0, &surface);
device->SetRenderTarget(0, surface);
device->Clear(0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER, 0xff000000, 1.0f, 0);
drawcallback(effect);
surface->Release();
if( shadowtype == Static )
needsredraw = false;
}