Method begin

Engine/source/util/imposterCapture.cpp:363–438

}

void ImposterCapture::begin(  TSShapeInstance *shapeInst,
                              S32 dl, 
                              S32 dim,
                              F32 radius,
                              const Point3F &center )
{
   mShapeInstance = shapeInst;
   mDl = dl;
   mDim = dim;
   mRadius = radius;
   mCenter = center;

   mBlackTex.set( mDim, mDim, GFXFormatR8G8B8A8_SRGB, &GFXRenderTargetSRGBProfile, avar( "%s() - (line %d)", __FUNCTION__, __LINE__ ) );
   mWhiteTex.set( mDim, mDim, GFXFormatR8G8B8A8_SRGB, &GFXRenderTargetSRGBProfile, avar( "%s() - (line %d)", __FUNCTION__, __LINE__ ) );
   mNormalTex.set( mDim, mDim, GFXFormatR8G8B8A8, &GFXRenderTargetProfile, avar( "%s() - (line %d)", __FUNCTION__, __LINE__ ) );
   mDepthBuffer.set( mDim, mDim, GFXFormatD24S8, &GFXZTargetProfile, avar( "%s() - (line %d)", __FUNCTION__, __LINE__ ) );

   // copy the black render target data into a bitmap
   mBlackBmp = new GBitmap;
   mBlackBmp->allocateBitmap(mDim, mDim, false, GFXFormatR8G8B8);

   // copy the white target data into a bitmap
   mWhiteBmp = new GBitmap;
   mWhiteBmp->allocateBitmap(mDim, mDim, false, GFXFormatR8G8B8);

   // Setup viewport and frustrum to do orthographic projection.
   RectI viewport( 0, 0, mDim, mDim );
   GFX->setViewport( viewport );
   GFX->setOrtho( -mRadius, mRadius, -mRadius, mRadius, 1, 20.0f * mRadius );

   // Position camera looking out the X axis.
   MatrixF cameraMatrix( true );
   cameraMatrix.setColumn( 0, Point3F( 0, 0, 1 ) );
   cameraMatrix.setColumn( 1, Point3F( 1, 0, 0 ) );
   cameraMatrix.setColumn( 2, Point3F( 0, 1, 0 ) );

   // setup scene state required for TS mesh render...this is messy and inefficient; 
   // should have a mode where most of this is done just once (and then 
   // only the camera matrix changes between snapshots).
   // note that we use getFrustum here, but we set up an ortho projection above.  
   // it doesn't seem like the scene state object pays attention to whether the projection is 
   // ortho or not.  this could become a problem if some code downstream tries to 
   // reconstruct the projection matrix using the dimensions and doesn't 
   // realize it should be ortho.  at the moment no code is doing that.
   F32 left, right, top, bottom, nearPlane, farPlane;
   bool isOrtho;
   GFX->getFrustum( &left, &right, &bottom, &top, &nearPlane, &farPlane, &isOrtho );
   Frustum frust( isOrtho, left, right, top, bottom, nearPlane, farPlane, cameraMatrix );

   // Set up render pass.

   mRenderPass = new RenderPassManager();
   mRenderPass->assignName( "DiffuseRenderPass" );
   mMeshRenderBin = new RenderMeshMgr();
   mRenderPass->addManager( mMeshRenderBin );

   // Set up scene state.