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";
// Call the view's completion handler which is required by the view since it will signal its semaphore and set up the next buffer
var drawable = view.CurrentDrawable;
commandBuffer.AddCompletedHandler(buffer =>
{
drawable.Dispose();
inflightSemaphore.Release();
});
// Obtain a renderPassDescriptor generated from the view's drawable textures
MTLRenderPassDescriptor renderPassDescriptor = view.CurrentRenderPassDescriptor;
// If we have a valid drawable, begin the commands to render into it
if (renderPassDescriptor != null)
{
// 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(boxMesh.VertexBuffers[0].Buffer, boxMesh.VertexBuffers[0].Offset, 0);
renderEncoder.SetVertexBuffer(dynamicConstantBuffer, (nuint)Marshal.SizeOf <Uniforms>(), 1);
MTKSubmesh submesh = boxMesh.Submeshes[0];
// Tell the render context we want to draw our primitives
renderEncoder.DrawIndexedPrimitives(submesh.PrimitiveType, submesh.IndexCount, submesh.IndexType, submesh.IndexBuffer.Buffer, submesh.IndexBuffer.Offset);
renderEncoder.PopDebugGroup();
// We're done encoding commands
renderEncoder.EndEncoding();
// Schedule a present once the framebuffer is complete using the current drawable
commandBuffer.PresentDrawable(drawable);
}
// The render 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 = (constantDataBufferIndex + 1) % MaxInflightBuffers;
// Finalize rendering here & push the command buffer to the GPU
commandBuffer.Commit();
}
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);
}
static void SignalFenceWhenCompleted(AmtSemaphore fence, IMTLCommandBuffer cb)
{
// SIGNAL ORDER.FENCE
if (fence != null)
{
fence.Reset();
cb.AddCompletedHandler(
(b) =>
{
fence.Signal();
}
);
}
}
static void TriggerSemaphores(AmtSemaphore[] signals, IMTLCommandBuffer cb)
{
// SIGNAL SEMAPHORE
foreach (var signal in signals)
{
signal.Reset();
// APPLY HANDLER TO COMMAND BUFFER
cb.AddCompletedHandler(
(b) =>
{
signal.Signal();
}
);
}
}
public void Draw(MTKView view)
{
inflightSemaphore.WaitOne();
Update();
IMTLCommandBuffer commandBuffer = commandQueue.CommandBuffer();
commandBuffer.Label = "Main Command Buffer";
MTLRenderPassDescriptor renderPassDescriptor = view.CurrentRenderPassDescriptor;
// Create a render command encoder so we can render into something.
IMTLRenderCommandEncoder renderEncoder = commandBuffer.CreateRenderCommandEncoder(renderPassDescriptor);
renderEncoder.Label = "Final Pass Encoder";
renderEncoder.SetViewport(new MTLViewport(0.0, 0.0, view.DrawableSize.Width, view.DrawableSize.Height, 0.0, 1.0));
renderEncoder.SetDepthStencilState(depthState);
renderEncoder.SetRenderPipelineState(pipelineState);
// Set the our per frame uniforms.
renderEncoder.SetVertexBuffer(frameUniformBuffers[constantDataBufferIndex], 0, (nuint)(int)BufferIndex.FrameUniformBuffer);
renderEncoder.PushDebugGroup("Render Meshes");
// Render each of our meshes.
foreach (MetalKitEssentialsMesh mesh in meshes)
{
mesh.RenderWithEncoder(renderEncoder);
}
renderEncoder.PopDebugGroup();
renderEncoder.EndEncoding();
var drawable = view.CurrentDrawable;
commandBuffer.AddCompletedHandler(_ => {
inflightSemaphore.Release();
drawable.Dispose();
});
constantDataBufferIndex = (constantDataBufferIndex + 1) % maxInflightBuffers;
commandBuffer.PresentDrawable(drawable);
commandBuffer.Commit();
}
void PerformRequests(long key)
{
AmtQueueSubmission request;
if (mSubmissions.TryGetValue(key, out request))
{
int requirements = request.Waits.Length;
int checks = 0;
foreach (var signal in request.Waits)
{
if (signal.IsSignalled)
{
++checks;
}
}
// render
if (checks >= requirements)
{
mRenderer.Render(request);
if (request.Swapchains != null)
{
foreach (var info in request.Swapchains)
{
IMTLCommandBuffer presentCmd = mPresentQueue.CommandBuffer();
var imageInfo = info.Swapchain.Images[info.ImageIndex];
presentCmd.AddCompletedHandler((buffer) =>
{
imageInfo.Drawable.Dispose();
imageInfo.Inflight.Set();
});
presentCmd.PresentDrawable(imageInfo.Drawable);
presentCmd.Commit();
}
}
AmtQueueSubmission removedItem;
mSubmissions.TryRemove(key, out removedItem);
}
}
}
public void Draw(MTKView view)
{
inflightSemaphore.WaitOne();
// Perofm any app logic, including updating any Metal buffers.
Update();
// Create a new command buffer for each renderpass to the current drawable.
IMTLCommandBuffer commandBuffer = commandQueue.CommandBuffer();
commandBuffer.Label = "Main Command Buffer";
// Obtain a renderPassDescriptor generated from the view's drawable textures.
MTLRenderPassDescriptor renderPassDescriptor = view.CurrentRenderPassDescriptor;
// Create a render command encoder so we can render into something.
IMTLRenderCommandEncoder renderEncoder = commandBuffer.CreateRenderCommandEncoder(renderPassDescriptor);
renderEncoder.Label = "Final Pass Encoder";
// Set context state.
renderEncoder.SetViewport(new MTLViewport(0d, 0d, view.DrawableSize.Width, view.DrawableSize.Height, 0d, 1d));
renderEncoder.SetDepthStencilState(depthState);
renderEncoder.SetRenderPipelineState(pipelineState);
// Set the our per frame uniforms.
renderEncoder.SetVertexBuffer(frameUniformBuffers[constantDataBufferIndex], 0, (nuint)(int)BufferIndex.FrameUniformBuffer);
renderEncoder.PushDebugGroup("Render Meshes");
// Render each of our meshes.
foreach (MetalKitEssentialsMesh mesh in meshes)
{
mesh.RenderWithEncoder(renderEncoder);
}
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.
*/
var drawable = view.CurrentDrawable;
commandBuffer.AddCompletedHandler(_ => {
inflightSemaphore.Release();
drawable.Dispose();
});
/*
* 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 = (constantDataBufferIndex + 1) % maxInflightBuffers;
// Schedule a present once the framebuffer is complete using the current drawable.
commandBuffer.PresentDrawable(drawable);
// Finalize rendering here & push the command buffer to the GPU.
commandBuffer.Commit();
}