public void Unmap()
{
if (UseBufferOffsets && mappedConstantBuffer.Resource != null)
{
using (new DefaultCommandListLock(commandList))
{
commandList.UnmapSubresource(mappedConstantBuffer);
mappedConstantBuffer = new MappedResource();
}
}
}
public void Map(CommandList commandList)
{
if (UseBufferOffsets)
{
using (new DefaultCommandListLock(commandList))
{
this.commandList = commandList;
mappedConstantBuffer = commandList.MapSubresource(constantBuffer, 0, MapMode.WriteNoOverwrite);
Data = mappedConstantBuffer.DataBox.DataPointer;
}
}
}
/// <summary>
/// Begins text rendering (swaps and maps the vertex buffer to write to).
/// </summary>
/// <param name="graphicsContext">The current GraphicsContext.</param>
public void End([NotNull] GraphicsContext graphicsContext)
{
if (graphicsContext == null)
{
throw new ArgumentNullException(nameof(graphicsContext));
}
// Reallocate buffers if max number of characters is exceeded
if (charsToRenderCount > maxCharacterCount)
{
maxCharacterCount = (int)(1.5f * charsToRenderCount);
Initialize(graphicsContext, maxCharacterCount);
}
// Set the rendering parameters
simpleEffect.Parameters.Set(TexturingKeys.Texture0, DebugSpriteFont);
simpleEffect.Parameters.Set(SpriteEffectKeys.Color, TextColor);
// Swap vertex buffer
activeVertexBufferIndex = ++activeVertexBufferIndex >= VertexBufferCount ? 0 : activeVertexBufferIndex;
// Map the vertex buffer to write to
mappedVertexBuffer = graphicsContext.CommandList.MapSubresource(vertexBuffers[activeVertexBufferIndex], 0, MapMode.WriteDiscard);
mappedVertexBufferPointer = mappedVertexBuffer.DataBox.DataPointer;
unsafe
{
// Clear buffer first (because of the buffer mapping mode used)
Utilities.ClearMemory(mappedVertexBufferPointer, 0x0, VertexBufferLength * sizeof(VertexPositionNormalTexture));
charsToRenderCount = 0;
//Draw the strings
var constantInfos = new RectangleF(GlyphWidth, GlyphHeight, DebugSpriteWidth, DebugSpriteHeight);
foreach (var textInfo in stringsToDraw)
{
var textLength = textInfo.Text.Length;
var textLengthPointer = new IntPtr(&textLength);
Native.NativeInvoke.xnGraphicsFastTextRendererGenerateVertices(constantInfos, textInfo.RenderingInfo, textInfo.Text, out textLengthPointer, out mappedVertexBufferPointer);
charsToRenderCount += *(int *)textLengthPointer.ToPointer();
}
}
// Unmap the vertex buffer
graphicsContext.CommandList.UnmapSubresource(mappedVertexBuffer);
mappedVertexBufferPointer = IntPtr.Zero;
// Update pipeline state
pipelineState.State.SetDefaults();
pipelineState.State.RootSignature = simpleEffect.RootSignature;
pipelineState.State.EffectBytecode = simpleEffect.Effect.Bytecode;
pipelineState.State.DepthStencilState = DepthStencilStates.None;
pipelineState.State.BlendState = BlendStates.AlphaBlend;
pipelineState.State.Output.CaptureState(graphicsContext.CommandList);
pipelineState.State.InputElements = inputElementDescriptions[activeVertexBufferIndex];
pipelineState.Update();
graphicsContext.CommandList.SetPipelineState(pipelineState.CurrentState);
// Update effect
simpleEffect.UpdateEffect(graphicsContext.CommandList.GraphicsDevice);
simpleEffect.Apply(graphicsContext);
// Bind and draw
graphicsContext.CommandList.SetVertexBuffer(0, vertexBuffersBinding[activeVertexBufferIndex].Buffer, vertexBuffersBinding[activeVertexBufferIndex].Offset, vertexBuffersBinding[activeVertexBufferIndex].Stride);
graphicsContext.CommandList.SetIndexBuffer(indexBufferBinding.Buffer, 0, indexBufferBinding.Is32Bit);
graphicsContext.CommandList.DrawIndexed(charsToRenderCount * 6);
}
private void DrawBatchPerTextureAndPass(ElementInfo[] sprites, int offset, int count)
{
while (count > 0)
{
// How many index/vertex do we want to draw?
var indexCount = 0;
var vertexCount = 0;
var batchSize = 0;
while (batchSize < count)
{
var spriteIndex = offset + batchSize;
ref var spriteElementInfo = ref sprites[spriteIndex];
// How many sprites does the D3D vertex buffer have room for?
var remainingVertexSpace = ResourceContext.VertexCount - ResourceContext.VertexBufferPosition - vertexCount;
var remainingIndexSpace = ResourceContext.IndexCount - ResourceContext.IndexBufferPosition - indexCount;
// if there is not enough place left for either the indices or vertices of the current element...,
if (spriteElementInfo.IndexCount > remainingIndexSpace || spriteElementInfo.VertexCount > remainingVertexSpace)
{
// if we haven't started the current batch yet, we restart at the beginning of the buffers.
if (batchSize == 0)
{
ResourceContext.VertexBufferPosition = 0;
ResourceContext.IndexBufferPosition = 0;
continue;
}
// else we perform the draw call and batch remaining elements in next draw call.
break;
}
++batchSize;
vertexCount += spriteElementInfo.VertexCount;
indexCount += spriteElementInfo.IndexCount;
}
// Sets the data directly to the buffer in memory
var offsetVertexInBytes = ResourceContext.VertexBufferPosition * vertexStructSize;
var offsetIndexInBytes = ResourceContext.IndexBufferPosition * indexStructSize;
if (ResourceContext.VertexBufferPosition == 0)
{
if (ResourceContext.VertexBuffer != null)
{
GraphicsContext.Allocator.ReleaseReference(ResourceContext.VertexBuffer);
}
ResourceContext.VertexBuffer = GraphicsContext.Allocator.GetTemporaryBuffer(new BufferDescription(ResourceContext.VertexCount * vertexStructSize, BufferFlags.VertexBuffer, GraphicsResourceUsage.Dynamic));
GraphicsContext.CommandList.SetVertexBuffer(0, ResourceContext.VertexBuffer, 0, vertexStructSize);
}
if (ResourceContext.IsIndexBufferDynamic && ResourceContext.IndexBufferPosition == 0)
{
if (ResourceContext.IndexBuffer != null)
{
GraphicsContext.Allocator.ReleaseReference(ResourceContext.IndexBuffer);
}
ResourceContext.IndexBuffer = GraphicsContext.Allocator.GetTemporaryBuffer(new BufferDescription(ResourceContext.IndexCount * indexStructSize, BufferFlags.IndexBuffer, GraphicsResourceUsage.Dynamic));
GraphicsContext.CommandList.SetIndexBuffer(ResourceContext.IndexBuffer, 0, indexStructSize == sizeof(int));
}
// ------------------------------------------------------------------------------------------------------------
// CAUTION: Performance problem under x64 resolved by this special codepath:
// For some unknown reasons, It seems that writing directly to the pointer returned by the MapSubresource is
// extremely inefficient using x64 but using a temporary buffer and performing a mempcy to the locked region
// seems to be running at the same speed than x86
// ------------------------------------------------------------------------------------------------------------
// TODO Check again why we need this code
//if (IntPtr.Size == 8)
//{
// if (x64TempBuffer == null)
// {
// x64TempBuffer = ToDispose(new DataBuffer(Utilities.SizeOf<VertexPositionColorTexture>() * MaxBatchSize * VerticesPerSprite));
// }
// // Perform the update of all vertices on a temporary buffer
// var texturePtr = (VertexPositionColorTexture*)x64TempBuffer.DataPointer;
// for (int i = 0; i < batchSize; i++)
// {
// UpdateBufferValuesFromElementInfo(ref sprites[offset + i], ref texturePtr, deltaX, deltaY);
// }
// // Then copy this buffer in one shot
// resourceContext.VertexBuffer.SetData(GraphicsDevice, new DataPointer(x64TempBuffer.DataPointer, batchSize * VerticesPerSprite * Utilities.SizeOf<VertexPositionColorTexture>()), offsetInBytes, noOverwrite);
//}
//else
{
var mappedIndices = new MappedResource();
var mappedVertices = GraphicsContext.CommandList.MapSubresource(ResourceContext.VertexBuffer, 0, MapMode.WriteNoOverwrite, false, offsetVertexInBytes, vertexCount * vertexStructSize);
if (ResourceContext.IsIndexBufferDynamic)
{
mappedIndices = GraphicsContext.CommandList.MapSubresource(ResourceContext.IndexBuffer, 0, MapMode.WriteNoOverwrite, false, offsetIndexInBytes, indexCount * indexStructSize);
}
var vertexPointer = mappedVertices.DataBox.DataPointer;
var indexPointer = mappedIndices.DataBox.DataPointer;
for (var i = 0; i < batchSize; i++)
{
var spriteIndex = offset + i;
ref var spriteElementInfo = ref sprites[spriteIndex];
UpdateBufferValuesFromElementInfo(ref spriteElementInfo, vertexPointer, indexPointer, ResourceContext.VertexBufferPosition);
ResourceContext.VertexBufferPosition += spriteElementInfo.VertexCount;
vertexPointer += vertexStructSize * spriteElementInfo.VertexCount;
indexPointer += indexStructSize * spriteElementInfo.IndexCount;
}
GraphicsContext.CommandList.UnmapSubresource(mappedVertices);
if (ResourceContext.IsIndexBufferDynamic)
{
GraphicsContext.CommandList.UnmapSubresource(mappedIndices);
}
}
// TODO GRAPHICS REFACTOR what should we do with this?
public void UnmapSubresource(MappedResource unmapped)
{
NativeDeviceContext.UnmapSubresource(unmapped.Resource.NativeResource, unmapped.SubResourceIndex);
}
/// <summary>
/// Unmap <param name="mapped"/> resource.
/// </summary>
/// <param name="mapped">The mapped resource.</param>
public void UnmapSubresource(MappedResource mapped)
{
NullHelper.ToImplement();
}
