private void OnCameraPreCull ( Camera camera ) {
if (!camera)
return;
if (_excludedCameras.Contains(camera))
return;
#if UNITY_EDITOR
// The frame debugger is rendered through a temporary "Camera", and we
// shouldn't interfere with that. If the camera we're dealing with is
// used for an editor preview, then ignore it.
if (camera.cameraType == CameraType.Preview)
return;
#endif
MetaballCameraConfiguration cameraConfig = null;
if (_cameraConfigs.ContainsKey(camera)) {
cameraConfig = _cameraConfigs[camera];
}else{
cameraConfig = _cameraConfigs[camera] = new MetaballCameraConfiguration(camera);
//config.cullingGroup.SetBoundingSpheres(_chargeBounds);
}
BindSurfaceProperties();
BindCameraProperties( cameraConfig );
// Field pre-pass currently disabled. The additional performance gain isn't worth the
// hassle of regenerating the commandbuffer on the fly. Plus, the lack of 3D blit support
// means that each depth slice of the field texture has to be blitted separately.
// I may be able to unroll the 3D texture into a packed 2D texture down the line.
//Graphics.ExecuteCommandBuffer( cameraConfig.fieldPrepass );
Graphics.ExecuteCommandBuffer( cameraConfig.vertexPrepass );
Graphics.DrawMesh( cameraConfig.sampleMesh, Matrix4x4.identity, isosurfaceMaterial, 0, camera );
}
private void BindCameraProperties ( MetaballCameraConfiguration config ) {
Shader.SetGlobalVectorArray( "_CameraFrustumCorners", config.GetFrustumCorners() );
Shader.SetGlobalVector( "_CameraWorldPosition", config.camera.transform.position );
Shader.SetGlobalVector( "_Isosurface_VoxelResolution", config.sampleResolution );
Shader.SetGlobalTexture( "_Isosurface_VertexTexture", config.vertexTexture );
}