private void Bake(RenderTexture temporary, int width, int height, RenderTextureFormat format, int scale)
{
if (bakedPixels == null)
{
bakedPixels = new List <bool>();
}
else
{
bakedPixels.Clear();
}
baked = true;
bakedMesh = mesh;
bakedSize = new Vector2Int(width, height);
if (cachedMaterial == null)
{
cachedMaterial = P3dShader.BuildMaterial("Hidden/Paint in 3D/White");
}
cachedMaterial.SetVector(P3dShader._Channel, P3dHelper.IndexToVector((int)PaintableTexture.Coord));
// Write to temp RenderTexture
var oldActive = RenderTexture.active;
var renderTexture = temporary;
if (temporary == null)
{
var desc = new RenderTextureDescriptor(width, height, format, 0);
renderTexture = P3dHelper.GetRenderTexture(desc);
}
RenderTexture.active = renderTexture;
GL.Clear(true, true, Color.black);
cachedMaterial.SetPass(0);
Graphics.DrawMeshNow(mesh, Matrix4x4.identity, PaintableTexture.Slot.Index);
RenderTexture.active = oldActive;
// Get readable copy
var readable = P3dHelper.GetReadableCopy(renderTexture);
if (temporary == null)
{
P3dHelper.ReleaseRenderTexture(renderTexture);
}
// Run through pixels to count total and build binary mask
bakedPixels.Capacity = width * height;
total = 0;
for (var y = 0; y < height; y++)
{
for (var x = 0; x < width; x++)
{
if (readable.GetPixel(x, y).r > 0.5f)
{
bakedPixels.Add(true);
total += scale;
}
else
{
bakedPixels.Add(false);
}
}
}
// Clean up
P3dHelper.Destroy(readable);
}
