public void Render(ImageView view)
{
inflightSemaphore.WaitOne();
IMTLCommandBuffer commandBuffer = commandQueue.CommandBuffer();
// compute image processing on the (same) drawable texture
Compute(commandBuffer);
ICAMetalDrawable drawable = view.GetNextDrawable();
// create a render command encoder so we can render into something
MTLRenderPassDescriptor renderPassDescriptor = view.GetRenderPassDescriptor(drawable);
if (renderPassDescriptor == null)
{
inflightSemaphore.Release();
return;
}
// Get a render encoder
IMTLRenderCommandEncoder renderEncoder = commandBuffer.CreateRenderCommandEncoder(renderPassDescriptor);
// render textured quad
Encode(renderEncoder);
commandBuffer.AddCompletedHandler((IMTLCommandBuffer buffer) => {
inflightSemaphore.Release();
drawable.Dispose();
});
commandBuffer.PresentDrawable(drawable);
commandBuffer.Commit();
}
public void Render(GameView view)
{
inflightSemaphore.WaitOne();
PrepareToDraw();
IMTLCommandBuffer commandBuffer = commandQueue.CommandBuffer();
ICAMetalDrawable drawable = view.GetNextDrawable();
MTLRenderPassDescriptor renderPassDescriptor = view.GetRenderPassDescriptor(drawable);
if (renderPassDescriptor == null)
{
Console.WriteLine("ERROR: Failed to get render pass descriptor from view!");
}
IMTLRenderCommandEncoder renderEncoder = commandBuffer.CreateRenderCommandEncoder(renderPassDescriptor);
renderEncoder.SetDepthStencilState(depthState);
RenderBox(renderEncoder, view, 0, "Box1");
RenderBox(renderEncoder, view, (nuint)Marshal.SizeOf <Uniforms> (), "Box2");
renderEncoder.EndEncoding();
commandBuffer.AddCompletedHandler((IMTLCommandBuffer buffer) => {
drawable.Dispose();
inflightSemaphore.Release();
});
commandBuffer.PresentDrawable(drawable);
commandBuffer.Commit();
constantDataBufferIndex = (constantDataBufferIndex + 1) % max_inflight_buffers;
}
void Render()
{
inflightSemaphore.WaitOne();
Update();
// Create a new command buffer for each renderpass to the current drawable
IMTLCommandBuffer commandBuffer = commandQueue.CommandBuffer();
commandBuffer.Label = "MyCommand";
// Obtain a drawable texture for this render pass and set up the renderpass descriptor for the command encoder to render into
ICAMetalDrawable drawable = GetCurrentDrawable();
SetupRenderPassDescriptorForTexture(drawable.Texture);
// Create a render command encoder so we can render into something
IMTLRenderCommandEncoder renderEncoder = commandBuffer.CreateRenderCommandEncoder(renderPassDescriptor);
renderEncoder.Label = "MyRenderEncoder";
renderEncoder.SetDepthStencilState(depthState);
// Set context state
renderEncoder.PushDebugGroup("DrawCube");
renderEncoder.SetRenderPipelineState(pipelineState);
renderEncoder.SetVertexBuffer(vertexBuffer, 0, 0);
renderEncoder.SetVertexBuffer(dynamicConstantBuffer, (nuint)(Marshal.SizeOf(typeof(Uniforms)) * constantDataBufferIndex), 1);
// Tell the render context we want to draw our primitives
renderEncoder.DrawPrimitives(MTLPrimitiveType.Triangle, 0, 36, 1);
renderEncoder.PopDebugGroup();
// We're done encoding commands
renderEncoder.EndEncoding();
// Call the view's completion handler which is required by the view since it will signal its semaphore and set up the next buffer
commandBuffer.AddCompletedHandler(buffer =>
{
drawable.Dispose();
inflightSemaphore.Release();
});
// Schedule a present once the framebuffer is complete
commandBuffer.PresentDrawable(drawable);
// Finalize rendering here & push the command buffer to the GPU
commandBuffer.Commit();
// The renderview assumes it can now increment the buffer index and that the previous index won't be touched until we cycle back around to the same index
constantDataBufferIndex = (byte)((constantDataBufferIndex + 1) % max_inflight_buffers);
}