private static StaticBuffer <ushort> CreateIndexBuffer(GraphicsDevice graphicsDevice, int maxParticles)
{
var uploadBatch = new ResourceUploadBatch(graphicsDevice);
uploadBatch.Begin();
var indices = new ushort[maxParticles * 2 * 3]; // Two triangles per particle.
var indexCounter = 0;
for (ushort i = 0; i < maxParticles * 4; i += 4)
{
indices[indexCounter++] = (ushort)(i + 0);
indices[indexCounter++] = (ushort)(i + 2);
indices[indexCounter++] = (ushort)(i + 1);
indices[indexCounter++] = (ushort)(i + 1);
indices[indexCounter++] = (ushort)(i + 2);
indices[indexCounter++] = (ushort)(i + 3);
}
var result = StaticBuffer.Create(
graphicsDevice,
uploadBatch,
indices);
uploadBatch.End();
return(result);
}
public TextureLoader(GraphicsDevice graphicsDevice)
{
var uploadBatch = new ResourceUploadBatch(graphicsDevice);
uploadBatch.Begin();
PlaceholderValue = AddDisposable(Texture.CreatePlaceholderTexture2D(
graphicsDevice,
uploadBatch));
uploadBatch.End();
}