void ProjectedShadow::render( F32 camDist, const TSRenderState &rdata )
{
if ( !mUpdateTexture )
return;
// Do the render to texture,
// DecalManager handles rendering
// the shadow onto the world.
_renderToTexture( camDist, rdata );
}
void ImposterCapture::capture( const MatrixF &rotMatrix,
GBitmap **imposterOut,
GBitmap **normalMapOut )
{
GFXTransformSaver saver;
// this version of the snapshot function renders the shape to a black texture, then to white, then reads bitmaps
// back for both renders and combines them, restoring the alpha and color values. this is based on the
// TGE implementation. it is not fast due to the copy and software combination operations. the generated bitmaps
// are upside-down (which is how TGE generated them...)
(*imposterOut) = new GBitmap( mDim, mDim, false, GFXFormatR8G8B8A8 );
(*normalMapOut) = new GBitmap( mDim, mDim, false, GFXFormatR8G8B8A8 );
// The object to world transform.
MatrixF centerMat( true );
centerMat.setPosition( -mCenter );
MatrixF objMatrix( rotMatrix );
objMatrix.mul( centerMat );
GFX->setWorldMatrix( objMatrix );
// The view transform.
MatrixF view( EulerF( M_PI_F / 2.0f, 0, M_PI_F ), Point3F( 0, 0, -10.0f * mRadius ) );
mRenderPass->assignSharedXform( RenderPassManager::View, view );
mRenderPass->assignSharedXform( RenderPassManager::Projection, GFX->getProjectionMatrix() );
// Render the diffuse pass.
mRenderPass->clear();
mMeshRenderBin->getMatOverrideDelegate().bind( ImposterCaptureMaterialHook::getDiffuseInst );
_renderToTexture( mBlackTex, mBlackBmp, ColorI(0, 0, 0, 0) );
_renderToTexture( mWhiteTex, mWhiteBmp, ColorI(255, 255, 255, 255) );
// Now render the normals.
mRenderPass->clear();
mMeshRenderBin->getMatOverrideDelegate().bind( ImposterCaptureMaterialHook::getNormalsInst );
_renderToTexture( mNormalTex, *normalMapOut, ColorI(0, 0, 0, 0) );
_separateAlpha( *imposterOut );
_convertDXT5nm( *normalMapOut );
if ( 0 )
{
// Render out the bitmaps for debug purposes.
FileStream fs;
if ( fs.open( "./blackbmp.png", Torque::FS::File::Write ) )
mBlackBmp->writeBitmap( "png", fs );
fs.close();
if ( fs.open( "./whitebmp.png", Torque::FS::File::Write ) )
mWhiteBmp->writeBitmap( "png", fs );
fs.close();
if ( fs.open( "./normalbmp.png", Torque::FS::File::Write ) )
(*normalMapOut)->writeBitmap( "png", fs );
fs.close();
if ( fs.open( "./finalimposter.png", Torque::FS::File::Write ) )
(*imposterOut)->writeBitmap( "png", fs );
fs.close();
}
}
