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;
}
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 Draw(MTKView view)
{
// Create a new command buffer for each renderpass to the current drawable
IMTLCommandBuffer commandBuffer = commandQueue.CommandBuffer();
// 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;
// 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);
// Set context state
renderEncoder.SetDepthStencilState(depthState);
renderEncoder.SetRenderPipelineState(pipelineState);
renderEncoder.SetVertexBuffer(vertexBuffer, 0, 0);
// Tell the render context we want to draw our primitives
renderEncoder.DrawIndexedPrimitives(MTLPrimitiveType.Triangle, (nuint)indexData.Length, MTLIndexType.UInt16, indexBuffer, 0);
// We're done encoding commands
renderEncoder.EndEncoding();
// 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();
}
public void Draw(MTKView view)
{
// Update
var time = clock.ElapsedMilliseconds / 1000.0f;
var viewProj = Matrix4.Mult(this.view, this.proj);
var worldViewProj = Matrix4.CreateRotationX(time) * Matrix4.CreateRotationY(time * 2) * Matrix4.CreateRotationZ(time * .7f) * viewProj;
worldViewProj = Matrix4.Transpose(worldViewProj);
int rawsize = Marshal.SizeOf <Matrix4>();
var rawdata = new byte[rawsize];
GCHandle pinnedUniforms = GCHandle.Alloc(worldViewProj, GCHandleType.Pinned);
IntPtr ptr = pinnedUniforms.AddrOfPinnedObject();
Marshal.Copy(ptr, rawdata, 0, rawsize);
pinnedUniforms.Free();
Marshal.Copy(rawdata, 0, constantBuffer.Contents + rawsize, rawsize);
// Create a new command buffer for each renderpass to the current drawable
IMTLCommandBuffer commandBuffer = commandQueue.CommandBuffer();
// 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;
// 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.SetDepthStencilState(depthState);
// Set context state
renderEncoder.SetRenderPipelineState(pipelineState);
renderEncoder.SetVertexBuffer(vertexBuffer, 0, 0);
renderEncoder.SetVertexBuffer(constantBuffer, (nuint)Marshal.SizeOf <Matrix4>(), 1);
renderEncoder.SetFragmentTexture(this.texture, 0);
renderEncoder.SetFragmentSamplerState(this.sampler, 0);
// Tell the render context we want to draw our primitives
renderEncoder.DrawPrimitives(MTLPrimitiveType.Triangle, 0, (nuint)vertexData.Length);
// We're done encoding commands
renderEncoder.EndEncoding();
// 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();
}
internal void Apply(IMTLRenderCommandEncoder commandEncoder)
{
// Rasterizer state.
commandEncoder.SetTriangleFillMode(_triangleFillMode);
commandEncoder.SetFrontFacingWinding(_frontFacingWinding);
commandEncoder.SetCullMode(_cullMode);
// Depth stencil state.
commandEncoder.SetDepthStencilState(_depthStencilState);
}
public unsafe static void SetTileSamplerStates(this IMTLRenderCommandEncoder This, IMTLSamplerState[] samplers, float[] lodMinClamps, float[] lodMaxClamps, NSRange range)
{
fixed(void *minHandle = lodMinClamps)
{
fixed(void *maxHandle = lodMaxClamps)
{
This.SetTileSamplerStates(samplers, (IntPtr)minHandle, (IntPtr)maxHandle, range);
}
}
}
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();
}
public void Draw(MTKView view)
{
// Update
this.time += this.clock.ElapsedMilliseconds / 1000.0f;
if (this.time > 2)
{
this.time = 0;
clock.Restart();
this.mipmapping++;
if (this.mipmapping >= this.texture.MipmapLevelCount)
{
this.mipmapping = 0;
}
SetConstantBuffer(this.mipmapping, this.constantBuffer);
}
// Create a new command buffer for each renderpass to the current drawable
IMTLCommandBuffer commandBuffer = commandQueue.CommandBuffer();
// 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;
// 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);
// Set context state
renderEncoder.SetDepthStencilState(depthState);
renderEncoder.SetRenderPipelineState(pipelineState);
renderEncoder.SetVertexBuffer(vertexBuffer, 0, 0);
renderEncoder.SetFragmentBuffer(constantBuffer, (nuint)sizeof(float), 1);
renderEncoder.SetFragmentTexture(this.texture, 0);
renderEncoder.SetFragmentSamplerState(this.sampler, 0);
// Tell the render context we want to draw our primitives
renderEncoder.DrawPrimitives(MTLPrimitiveType.Triangle, 0, (uint)vertexData.Length);
// We're done encoding commands
renderEncoder.EndEncoding();
// 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();
}
public void RenderWithEncoder(IMTLRenderCommandEncoder encoder)
{
if (diffuseTexture != null)
encoder.SetFragmentTexture (diffuseTexture, (nuint)(int)TextureIndex.Diffuse);
encoder.SetFragmentBuffer (materialUniforms, 0, (nuint)(int)BufferIndex.MaterialUniformBuffer);
encoder.SetVertexBuffer (materialUniforms, 0, (nuint)(int)BufferIndex.MaterialUniformBuffer);
// Draw the submesh.
encoder.DrawIndexedPrimitives (submesh.PrimitiveType, submesh.IndexCount, submesh.IndexType, submesh.IndexBuffer.Buffer, submesh.IndexBuffer.Offset);
}
public void Draw(MTKView view)
{
// Update
var time = clock.ElapsedMilliseconds / 1000.0f;
var viewProj = Matrix4.Mult(this.view, this.proj);
var world = Matrix4.CreateRotationX(time) * Matrix4.CreateRotationY(time * 2) * Matrix4.CreateRotationZ(time * .7f);
var worldViewProj = world * viewProj;
var worldInverse = Matrix4.Invert(world);
param.World = Matrix4.Transpose(world);
param.WorldInverseTranspose = worldInverse;
param.WorldViewProjection = Matrix4.Transpose(worldViewProj);
SetConstantBuffer(this.param, constantBuffer);
// Create a new command buffer for each renderpass to the current drawable
IMTLCommandBuffer commandBuffer = commandQueue.CommandBuffer();
// 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;
// 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);
// Set context state
renderEncoder.SetDepthStencilState(depthState);
renderEncoder.SetRenderPipelineState(pipelineState);
renderEncoder.SetVertexBuffer(vertexBuffer, 0, 0);
renderEncoder.SetVertexBuffer(constantBuffer, (nuint)Marshal.SizeOf(this.param), 1);
renderEncoder.SetFragmentBuffer(constantBuffer, (nuint)Marshal.SizeOf(this.param), 1);
renderEncoder.SetFragmentTexture(this.texture, 0);
renderEncoder.SetFragmentSamplerState(this.sampler, 0);
// Tell the render context we want to draw our primitives
renderEncoder.DrawIndexedPrimitives(MTLPrimitiveType.Triangle, (uint)indexDataArray.Length, MTLIndexType.UInt16, indexBuffer, 0);
// We're done encoding commands
renderEncoder.EndEncoding();
// 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();
}
void RenderBox(IMTLRenderCommandEncoder renderEncoder, GameView view, nuint offset, string name)
{
renderEncoder.PushDebugGroup(name);
// set context state
renderEncoder.SetRenderPipelineState(pipelineState);
renderEncoder.SetVertexBuffer(vertexBuffer, 0, 0);
renderEncoder.SetVertexBuffer(dynamicConstantBuffer [constantDataBufferIndex], offset, 1);
// tell the render context we want to draw our primitives
renderEncoder.DrawPrimitives(MTLPrimitiveType.Triangle, 0, 36, 1);
renderEncoder.PopDebugGroup();
}
public void RenderWithEncoder(IMTLRenderCommandEncoder encoder)
{
if (diffuseTexture != null)
{
encoder.SetFragmentTexture(diffuseTexture, (nuint)(int)TextureIndex.Diffuse);
}
encoder.SetFragmentBuffer(materialUniforms, 0, (nuint)(int)BufferIndex.MaterialUniformBuffer);
encoder.SetVertexBuffer(materialUniforms, 0, (nuint)(int)BufferIndex.MaterialUniformBuffer);
// Draw the submesh.
encoder.DrawIndexedPrimitives(submesh.PrimitiveType, submesh.IndexCount, submesh.IndexType, submesh.IndexBuffer.Buffer, submesh.IndexBuffer.Offset);
}
public void RenderWithEncoder(IMTLRenderCommandEncoder renderEncoder)
{
nuint bufferIndex = 0;
foreach (MTKMeshBuffer vertexBuffer in mesh.VertexBuffers) {
if(vertexBuffer.Buffer != null)
renderEncoder.SetVertexBuffer (vertexBuffer.Buffer, vertexBuffer.Offset, bufferIndex);
bufferIndex++;
}
foreach (MetalKitEssentialsSubmesh submesh in submeshes)
submesh.RenderWithEncoder (renderEncoder);
}
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);
}
public void Draw(MTKView view)
{
// Update
var time = clock.ElapsedMilliseconds / 1000.0f;
var viewProj = Matrix4.Mult(this.view, this.proj);
var worldViewProj = Matrix4.CreateRotationY(time * 2) * Matrix4.Scale(0.0015f) * viewProj;
worldViewProj = Matrix4.Transpose(worldViewProj);
this.param.WorldViewProjection = worldViewProj;
SetConstantBuffer(this.param, constantBuffer);
// Create a new command buffer for each renderpass to the current drawable
IMTLCommandBuffer commandBuffer = commandQueue.CommandBuffer();
// 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;
// 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);
// Set context state
renderEncoder.SetDepthStencilState(depthState);
renderEncoder.SetRenderPipelineState(pipelineState);
renderEncoder.SetVertexBuffer(objMesh.VertexBuffers[0].Buffer, objMesh.VertexBuffers[0].Offset, 0);
renderEncoder.SetVertexBuffer(constantBuffer, (nuint)Marshal.SizeOf <Matrix4>(), 1);
renderEncoder.SetFragmentTexture(this.texture, 0);
renderEncoder.SetFragmentSamplerState(this.sampler, 0);
for (int i = 0; i < objMesh.Submeshes.Length; i++)
{
MTKSubmesh submesh = objMesh.Submeshes[i];
renderEncoder.DrawIndexedPrimitives(submesh.PrimitiveType, submesh.IndexCount, submesh.IndexType, submesh.IndexBuffer.Buffer, submesh.IndexBuffer.Offset);
}
// We're done encoding commands
renderEncoder.EndEncoding();
// 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();
}
public void Draw(MTKView view)
{
// Create a new command buffer for each renderpass to the current drawable
IMTLCommandBuffer commandBuffer = commandQueue.CommandBuffer();
// Compute commands
IMTLComputeCommandEncoder computeCommandEncoder = commandBuffer.ComputeCommandEncoder;
computeCommandEncoder.SetComputePipelineState(computePipelineState);
computeCommandEncoder.SetBuffer(tessellationFactorsBuffer, 0, 2);
computeCommandEncoder.DispatchThreadgroups(new MTLSize(1, 1, 1), new MTLSize(1, 1, 1));
computeCommandEncoder.EndEncoding();
// Render commands
// 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;
// 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 renderCommandEncoder = commandBuffer.CreateRenderCommandEncoder(renderPassDescriptor);
// Set context state
renderCommandEncoder.SetTriangleFillMode(MTLTriangleFillMode.Lines);
renderCommandEncoder.SetDepthStencilState(depthState);
renderCommandEncoder.SetRenderPipelineState(renderPipelineState);
renderCommandEncoder.SetVertexBuffer(controlPointsBuffer, 0, 0);
renderCommandEncoder.SetTessellationFactorBuffer(tessellationFactorsBuffer, 0, 0);
// Tell the render context we want to draw our primitives
renderCommandEncoder.DrawPatches(3, 0, 1, null, 0, 1, 0);
// We're done encoding commands
renderCommandEncoder.EndEncoding();
// 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();
}
public void Encode(IMTLRenderCommandEncoder renderEncoder)
{
renderEncoder.PushDebugGroup("encode quad");
renderEncoder.SetFrontFacingWinding(MTLWinding.CounterClockwise);
renderEncoder.SetDepthStencilState(depthState);
renderEncoder.SetRenderPipelineState(pipelineState);
renderEncoder.SetVertexBuffer(transformBuffer, 0, 2);
renderEncoder.SetFragmentTexture(outTexture, 0);
// Encode quad vertex and texture coordinate buffers
mpQuad.Encode(renderEncoder);
// tell the render context we want to draw our primitives
renderEncoder.DrawPrimitives(MTLPrimitiveType.Triangle, 0, 6, 1);
renderEncoder.EndEncoding();
renderEncoder.PopDebugGroup();
}
public void Encode (IMTLRenderCommandEncoder renderEncoder)
{
renderEncoder.PushDebugGroup ("encode quad");
renderEncoder.SetFrontFacingWinding (MTLWinding.CounterClockwise);
renderEncoder.SetDepthStencilState (depthState);
renderEncoder.SetRenderPipelineState (pipelineState);
renderEncoder.SetVertexBuffer (transformBuffer, 0, 2);
renderEncoder.SetFragmentTexture (mpInTexture.MetalTexture, 0);
// Encode quad vertex and texture coordinate buffers
mpQuad.Encode (renderEncoder);
// tell the render context we want to draw our primitives
renderEncoder.DrawPrimitives (MTLPrimitiveType.Triangle, 0, 6, 1);
renderEncoder.EndEncoding ();
renderEncoder.PopDebugGroup ();
}
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();
}
public void RenderWithEncoder(IMTLRenderCommandEncoder renderEncoder)
{
nuint bufferIndex = 0;
foreach (MTKMeshBuffer vertexBuffer in mesh.VertexBuffers)
{
if (vertexBuffer.Buffer != null)
{
renderEncoder.SetVertexBuffer(vertexBuffer.Buffer, vertexBuffer.Offset, bufferIndex);
}
bufferIndex++;
}
foreach (MetalKitEssentialsSubmesh submesh in submeshes)
{
submesh.RenderWithEncoder(renderEncoder);
}
}
internal CommandEncoder(GraphicsDevice graphicsDevice, IMTLRenderCommandEncoder deviceCommandEncoder)
: base(graphicsDevice)
{
_deviceCommandEncoder = deviceCommandEncoder;
}
void RenderBox (IMTLRenderCommandEncoder renderEncoder, GameView view, nuint offset, string name)
{
renderEncoder.PushDebugGroup (name);
// set context state
renderEncoder.SetRenderPipelineState (pipelineState);
renderEncoder.SetVertexBuffer (vertexBuffer, 0, 0);
renderEncoder.SetVertexBuffer (dynamicConstantBuffer [constantDataBufferIndex], offset, 1);
// tell the render context we want to draw our primitives
renderEncoder.DrawPrimitives (MTLPrimitiveType.Triangle, 0, 36, 1);
renderEncoder.PopDebugGroup ();
}
public unsafe static void SetTileBuffers(this IMTLRenderCommandEncoder This, IMTLBuffer[] buffers, nuint[] offsets, NSRange range)
{
fixed(void *handle = offsets)
This.SetTileBuffers(buffers, (IntPtr)handle, range);
}
public unsafe static void SetScissorRects(this IMTLRenderCommandEncoder This, MTLScissorRect [] scissorRects)
{
fixed(void *handle = scissorRects)
This.SetScissorRects((IntPtr)handle, (nuint)(scissorRects?.Length ?? 0));
}
public unsafe static void SetViewports(this IMTLRenderCommandEncoder This, MTLViewport [] viewports)
{
fixed(void *handle = viewports)
This.SetViewports((IntPtr)handle, (nuint)(viewports?.Length ?? 0));
}
public void Draw(MTKView view)
{
// Update
var time = clock.ElapsedMilliseconds / 1000.0f;
var viewProj = Matrix4.Mult(this.view, this.proj);
var worldViewProj = Matrix4.CreateRotationX(time) * Matrix4.CreateRotationY(time * 2) * Matrix4.CreateRotationZ(time * .7f) * viewProj;
worldViewProj = Matrix4.Transpose(worldViewProj);
this.cubeParameters.WorldViewProjection = worldViewProj;
this.SetConstantBuffer(this.cubeParameters, this.cubeConstantBuffer);
// Create a new command buffer for each renderpass to the current drawable
IMTLCommandBuffer commandBuffer = commandQueue.CommandBuffer();
// 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;
// Obtain a renderPassDescriptor generated from the view's drawable textures
MTLRenderPassDescriptor renderPassDescriptor = view.CurrentRenderPassDescriptor;
renderPassDescriptor.ColorAttachments[0].Texture = this.colorFrameBufferTexture;
renderPassDescriptor.ColorAttachments[0].ClearColor = new MTLClearColor(0.5f, 0.75f, 1, 1);
// If we have a valid drawable, begin the commands to render into it
if (renderPassDescriptor != null)
{
//--------------------------------
// Draw Triangle
//--------------------------------
// Create a render command encoder so we can render into something
IMTLRenderCommandEncoder triangleRenderEncoder = commandBuffer.CreateRenderCommandEncoder(renderPassDescriptor);
triangleRenderEncoder.SetDepthStencilState(depthStencilState);
triangleRenderEncoder.SetRenderPipelineState(trianglePipelineState);
triangleRenderEncoder.SetVertexBuffer(triangleVertexBuffer, 0, 0);
// Tell the render context we want to draw our primitives
triangleRenderEncoder.DrawPrimitives(MTLPrimitiveType.Triangle, 0, (nuint)triangleVertexData.Length);
triangleRenderEncoder.EndEncoding();
//--------------------------------
// Draw Cube
//--------------------------------
renderPassDescriptor.ColorAttachments[0].Texture = drawable.Texture;
renderPassDescriptor.ColorAttachments[0].ClearColor = mtkView.ClearColor;
IMTLRenderCommandEncoder cubeRenderEncoder = commandBuffer.CreateRenderCommandEncoder(renderPassDescriptor);
cubeRenderEncoder.SetDepthStencilState(depthStencilState);
// Set context state
cubeRenderEncoder.SetRenderPipelineState(cubePipelineState);
cubeRenderEncoder.SetVertexBuffer(cubeVertexBuffer, 0, 0);
cubeRenderEncoder.SetVertexBuffer(cubeConstantBuffer, (nuint)Marshal.SizeOf(this.cubeParameters), 1);
cubeRenderEncoder.SetFragmentTexture(this.colorFrameBufferTexture, 0);
cubeRenderEncoder.SetFragmentSamplerState(this.sampler, 0);
// Tell the render context we want to draw our primitives
cubeRenderEncoder.DrawPrimitives(MTLPrimitiveType.Triangle, 0, (nuint)cubeVertexData.Length);
// We're done encoding commands
cubeRenderEncoder.EndEncoding();
// 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();
}
// Encoder
public void Encode(IMTLRenderCommandEncoder renderEncoder)
{
renderEncoder.SetVertexBuffer(vertexBuffer, 0, vertexIndex);
renderEncoder.SetVertexBuffer(texCoordBuffer, 0, texCoordIndex);
}
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();
}
// Encoder
public void Encode (IMTLRenderCommandEncoder renderEncoder)
{
renderEncoder.SetVertexBuffer (vertexBuffer, 0, vertexIndex);
renderEncoder.SetVertexBuffer (texCoordBuffer, 0, texCoordIndex);
}
public static void SetDepthClipMode(IMTLRenderCommandEncoder This, MTLDepthClipMode depthClipMode)
{
}
