/// <summary>
/// Coroutine to paint control texture
/// </summary>
/// <param name="arguments">Arguments from painting event</param>
private IEnumerator PaintControlTexture(AlphaMapsNeedPaintArgs arguments)
{
// Get a temporary render texture to be painted onto
var destinationTexture = arguments.Terrain.terrainData.GetAlphamapTexture(0);
var renderTextureDescriptor = new RenderTextureDescriptor(destinationTexture.width,
destinationTexture.height, RenderTextureFormat.ARGB32, 0);
var temporaryRenderTexture = RenderTexture.GetTemporary(renderTextureDescriptor);
arguments.RegisterFinalizer(() => RenderTexture.ReleaseTemporary(temporaryRenderTexture));
yield return(null);
// Make the active render texture our temporary one, storing the current one for restoration once we're done
var renderTexture = RenderTexture.active;
RenderTexture.active = temporaryRenderTexture;
// Paint the control texture from the feature mask using the configured material/shader
Graphics.Blit(arguments.FeatureMaskRenderTexture, temporaryRenderTexture,
MapStyleProvider.Instance.TerrainControlTexture);
destinationTexture.ReadPixels(new Rect(0, 0, destinationTexture.width, destinationTexture.height), 0, 0);
destinationTexture.Apply();
arguments.Terrain.terrainData.SetBaseMapDirty();
// Restore the previously active render texture
RenderTexture.active = renderTexture;
}
/// <summary>
/// Coroutine to paint control texture.
/// </summary>
/// <param name="args">Arguments from painting event</param>.
private IEnumerator PaintControlTexture(AlphaMapsNeedPaintArgs args)
{
// Get a temporary render texture to be painted onto.
Texture2D destinationTexture = args.Terrain.terrainData.GetAlphamapTexture(0);
RenderTextureDescriptor renderTextureDescriptor = new RenderTextureDescriptor(
destinationTexture.width, destinationTexture.height, RenderTextureFormat.ARGB32, 0);
RenderTexture temporaryRenderTexture = RenderTexture.GetTemporary(renderTextureDescriptor);
args.RegisterFinalizer(delegate {
RenderTexture.ReleaseTemporary(temporaryRenderTexture);
});
// Yield to allow work to be split across frames if necessary.
yield return(null);
// Make the active render texture our temporary one (storing the current one for restoration
// once we're done).
//
// Note that this is done before Graphics.Blit, which appears to set RenderTexture.active as
// well, but this doesn't appear to be documented behavior so isn't relied upon.
// https://docs.unity3d.com/ScriptReference/Graphics.Blit.html
RenderTexture renderTextureToRestore = RenderTexture.active;
RenderTexture.active = temporaryRenderTexture;
// Paint the control texture from the feature mask using the configured material/shader.
Graphics.Blit(
args.FeatureMaskRenderTexture,
temporaryRenderTexture,
ControlTexturePaintMaterial);
destinationTexture.ReadPixels(
new Rect(0, 0, destinationTexture.width, destinationTexture.height), 0, 0);
destinationTexture.Apply();
args.Terrain.terrainData.SetBaseMapDirty();
// Restore the previously active render texture.
RenderTexture.active = renderTextureToRestore;
}
