void MatrixTransformPlane2(const mat4_t m, vec4_t inout)
{
vec4_t tmp;
MatrixTransformPlane(m, inout, tmp);
Vector4Copy(tmp, inout);
}
//-----------------------------------------------------------------------------
// Do we have reflective glass in view?
//-----------------------------------------------------------------------------
bool IsReflectiveGlassInView( const CViewSetup& view, cplane_t &plane )
{
// Early out if no cameras
C_FuncReflectiveGlass *pReflectiveGlass = GetReflectiveGlassList();
if ( !pReflectiveGlass )
return false;
Frustum_t frustum;
GeneratePerspectiveFrustum( view.origin, view.angles, view.zNear, view.zFar, view.fov, view.m_flAspectRatio, frustum );
cplane_t localPlane;
Vector vecOrigin, vecWorld, vecDelta, vecForward;
AngleVectors( view.angles, &vecForward, NULL, NULL );
for ( ; pReflectiveGlass != NULL; pReflectiveGlass = pReflectiveGlass->m_pNext )
{
if ( pReflectiveGlass->IsDormant() )
continue;
Vector vecMins, vecMaxs;
pReflectiveGlass->GetRenderBoundsWorldspace( vecMins, vecMaxs );
if ( R_CullBox( vecMins, vecMaxs, frustum ) )
continue;
const model_t *pModel = pReflectiveGlass->GetModel();
const matrix3x4_t& mat = pReflectiveGlass->EntityToWorldTransform();
int nCount = modelinfo->GetBrushModelPlaneCount( pModel );
for ( int i = 0; i < nCount; ++i )
{
modelinfo->GetBrushModelPlane( pModel, i, localPlane, &vecOrigin );
MatrixTransformPlane( mat, localPlane, plane ); // Transform to world space
VectorTransform( vecOrigin, mat, vecWorld );
if ( view.origin.Dot( plane.normal ) <= plane.dist ) // Check for view behind plane
continue;
VectorSubtract( vecWorld, view.origin, vecDelta ); // Backface cull
if ( vecDelta.Dot( plane.normal ) >= 0 )
continue;
return true;
}
}
return false;
}
