public static bool Downsample(RenderTexture renderTexture, int steps, ref RenderTexture temporary)
{
if (steps > 0 && renderTexture != null)
{
// Perform initial downsample to get buffer
var oldActive = RenderTexture.active;
var desc = new RenderTextureDescriptor(renderTexture.width / 2, renderTexture.height / 2, renderTexture.format, 0);
var halfRenderTexture = GetRenderTexture(desc);
P3dPaintReplace.BlitFast(halfRenderTexture, renderTexture, Color.white);
// Ping pong downsamples
for (var i = 1; i < steps; i++)
{
desc.width /= 2;
desc.height /= 2;
renderTexture = halfRenderTexture;
halfRenderTexture = GetRenderTexture(desc);
Graphics.Blit(renderTexture, halfRenderTexture);
ReleaseRenderTexture(renderTexture);
}
temporary = halfRenderTexture;
RenderTexture.active = oldActive;
return(true);
}
return(false);
}
private void Render(P3dCommand command, P3dScene.Mat mat, P3dScene.Image image, P3dScene.Obj obj, int subMesh)
{
var oldActive = RenderTexture.active;
if (image.Current == null)
{
if (image.Width > 0 && image.Height > 0 && image.Pixels != null && image.Pixels.Length > 0)
{
var texture = new Texture2D(1, 1);
if (texture.LoadImage(image.Pixels) == true)
{
var desc = mat.Desc;
desc.width = image.Width;
desc.height = image.Height;
image.Current = P3dHelper.GetRenderTexture(mat.Desc);
P3dPaintReplace.BlitFast(image.Current, texture, Color.white);
}
else
{
image.Current = P3dHelper.GetRenderTexture(mat.Desc);
P3dPaintReplace.BlitFast(image.Current, default(Texture), default(Color));
}
DestroyImmediate(texture);
}
else
{
image.Current = P3dHelper.GetRenderTexture(mat.Desc);
P3dPaintReplace.BlitFast(image.Current, default(Texture), default(Color));
}
}
var swap = P3dHelper.GetRenderTexture(image.Current.descriptor);
if (command.Preview == true)
{
if (image.Preview == null)
{
image.Preview = P3dHelper.GetRenderTexture(image.Current.descriptor);
P3dPaintReplace.BlitFast(image.Preview, image.Current, Color.white);
}
P3dPaintReplace.BlitFast(swap, image.Preview, Color.white);
command.Apply(image.Preview);
}
else
{
P3dPaintReplace.BlitFast(swap, image.Current, Color.white);
command.Apply(image.Current);
}
RenderTexture.active = swap;
if (command.RequireMesh == true)
{
P3dHelper.Draw(command.Material, obj.Mesh, obj.Matrix, subMesh, obj.Coord);
}
else
{
P3dHelper.Draw(command.Material);
}
RenderTexture.active = oldActive;
if (command.Preview == true)
{
P3dHelper.ReleaseRenderTexture(image.Preview);
image.Preview = swap;
previewDrawn = true;
}
else
{
P3dHelper.ReleaseRenderTexture(image.Current);
image.Current = swap;
}
paintedGroups.Add(command.Priority); // Group is stored in priority
}
/// <summary>This allows you to manually execute all commands in the paint stack.
/// This is useful if you need to modify the state of your object before the end of the frame.</summary>
public void ExecuteCommands(bool sendNotifications)
{
if (activated == true)
{
var hidePreview = true;
if (CommandsPending == true)
{
var oldActive = RenderTexture.active;
var swap = P3dHelper.GetRenderTexture(current.descriptor);
var preparedMesh = default(Mesh);
var preparedMatrix = default(Matrix4x4);
// Blit so we don't lose non-UVd areas
P3dPaintReplace.BlitFast(swap, current, Color.white);
// Paint
if (paintCommands.Count > 0)
{
ExecuteCommands(paintCommands, sendNotifications, ref current, ref swap, ref preparedMesh, ref preparedMatrix);
}
// Preview
if (previewCommands.Count > 0)
{
if (previewSet == false)
{
preview = P3dHelper.GetRenderTexture(current.descriptor);
previewSet = true;
}
hidePreview = false;
preview.DiscardContents();
Graphics.Blit(current, preview);
previewCommands.Sort(P3dCommand.Compare);
ExecuteCommands(previewCommands, sendNotifications, ref preview, ref swap, ref preparedMesh, ref preparedMatrix);
}
P3dHelper.ReleaseRenderTexture(swap);
RenderTexture.active = oldActive;
}
if (hidePreview == true && previewSet == true)
{
P3dHelper.ReleaseRenderTexture(preview);
preview = null;
previewSet = false;
}
if (materialSet == false)
{
UpdateMaterial();
}
material.SetTexture(slot.Name, previewSet == true ? preview : current);
}
}