[Test] public void Locking()
{
VertexBatch <VertexC1P3> typedBatch = new VertexBatch <VertexC1P3>();
IVertexBatch abstractBatch = typedBatch;
typedBatch.Vertices.Add(new VertexC1P3 {
Color = new ColorRgba(0)
});
typedBatch.Vertices.Add(new VertexC1P3 {
Color = new ColorRgba(1)
});
typedBatch.Vertices.Add(new VertexC1P3 {
Color = new ColorRgba(2)
});
typedBatch.Vertices.Add(new VertexC1P3 {
Color = new ColorRgba(3)
});
// Assert that we can retrieve all data via unmanaged pointer access
VertexDeclaration layout = typedBatch.Declaration;
int vertexSize = layout.Size;
int colorElementIndex = layout.Elements.IndexOfFirst(item => item.FieldName == VertexDeclaration.ShaderFieldPrefix + "Color");
int colorOffset = (int)layout.Elements[colorElementIndex].Offset;
using (PinnedArrayHandle locked = typedBatch.Lock())
{
Assert.AreEqual(new ColorRgba(0), ReadColor(locked.Address, vertexSize * 0 + colorOffset));
Assert.AreEqual(new ColorRgba(1), ReadColor(locked.Address, vertexSize * 1 + colorOffset));
Assert.AreEqual(new ColorRgba(2), ReadColor(locked.Address, vertexSize * 2 + colorOffset));
Assert.AreEqual(new ColorRgba(3), ReadColor(locked.Address, vertexSize * 3 + colorOffset));
}
using (PinnedArrayHandle locked = abstractBatch.Lock())
{
Assert.AreEqual(new ColorRgba(0), ReadColor(locked.Address, vertexSize * 0 + colorOffset));
Assert.AreEqual(new ColorRgba(1), ReadColor(locked.Address, vertexSize * 1 + colorOffset));
Assert.AreEqual(new ColorRgba(2), ReadColor(locked.Address, vertexSize * 2 + colorOffset));
Assert.AreEqual(new ColorRgba(3), ReadColor(locked.Address, vertexSize * 3 + colorOffset));
}
// Make sure that our locks released properly, i.e. allowing the array to be garbage collected
WeakReference weakRefToLockedData = new WeakReference(typedBatch.Vertices.Data);
Assert.IsTrue(weakRefToLockedData.IsAlive);
typedBatch = null;
abstractBatch = null;
GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced, true);
GC.WaitForPendingFinalizers();
Assert.IsFalse(weakRefToLockedData.IsAlive);
}
/// <summary>
/// Uploads all dynamically gathered vertex data to the GPU using the internal <see cref="vertexBuffers"/> pool.
/// </summary>
private void UploadVertexData()
{
// Note that there is a 1:1 mapping between gathered vertex batches and vertex buffers.
// We'll keep all buffers around until the drawdevice is disposed, in case we might need
// them again later.
this.vertexBuffers.Count = Math.Max(this.vertexBuffers.Count, this.drawVertices.TypeIndexCount);
for (int typeIndex = 0; typeIndex < this.drawVertices.TypeIndexCount; typeIndex++)
{
// Filter out unused vertex types
IReadOnlyList <IVertexBatch> batches = this.drawVertices.GetBatches(typeIndex);
if (batches == null)
{
continue;
}
if (batches.Count == 0)
{
continue;
}
// Upload all vertex batches for this vertex type
if (this.vertexBuffers[typeIndex] == null)
{
this.vertexBuffers[typeIndex] = new RawList <VertexBuffer>();
}
this.vertexBuffers[typeIndex].Count = Math.Max(this.vertexBuffers[typeIndex].Count, batches.Count);
for (int batchIndex = 0; batchIndex < batches.Count; batchIndex++)
{
IVertexBatch vertexBatch = batches[batchIndex];
// Generate a VertexBuffer for this vertex type and batch index, if it didn't exist yet
if (this.vertexBuffers[typeIndex][batchIndex] == null)
{
this.vertexBuffers[typeIndex][batchIndex] = new VertexBuffer();
}
// Upload the vertex batch to
using (PinnedArrayHandle pinned = vertexBatch.Lock())
{
this.vertexBuffers[typeIndex][batchIndex].LoadVertexData(
vertexBatch.Declaration,
pinned.Address,
vertexBatch.Count);
}
}
}
}
void IGraphicsBackend.BeginRendering(IDrawDevice device, VertexBatchStore vertexData, RenderOptions options, RenderStats stats)
{
DebugCheckOpenGLErrors();
// ToDo: AA is disabled for now
//this.CheckContextCaps();
this.currentDevice = device;
this.renderOptions = options;
this.renderStats = stats;
// Upload all vertex data that we'll need during rendering
if (vertexData != null)
{
this.perVertexTypeVBO.Count = Math.Max(this.perVertexTypeVBO.Count, vertexData.Batches.Count);
for (int typeIndex = 0; typeIndex < vertexData.Batches.Count; typeIndex++)
{
// Filter out unused vertex types
IVertexBatch vertexBatch = vertexData.Batches[typeIndex];
if (vertexBatch == null)
{
continue;
}
if (vertexBatch.Count == 0)
{
continue;
}
// Generate a VBO for this vertex type if it didn't exist yet
if (this.perVertexTypeVBO[typeIndex] == 0)
{
GL.GenBuffers(1, out this.perVertexTypeVBO.Data[typeIndex]);
}
GL.BindBuffer(BufferTarget.ArrayBuffer, this.perVertexTypeVBO[typeIndex]);
// Upload all data of this vertex type as a single block
int vertexDataLength = vertexBatch.Declaration.Size * vertexBatch.Count;
using (PinnedArrayHandle pinned = vertexBatch.Lock()) {
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)vertexDataLength, IntPtr.Zero, BufferUsage.StreamDraw);
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)vertexDataLength, pinned.Address, BufferUsage.StreamDraw);
}
}
}
GL.BindBuffer(BufferTarget.ArrayBuffer, 0);
// Prepare the target surface for rendering
NativeRenderTarget.Bind(options.Target as NativeRenderTarget);
// Determine the available size on the active rendering surface
//Point2 availableSize;
//if (NativeRenderTarget.BoundRT != null) {
// availableSize = new Point2(NativeRenderTarget.BoundRT.Width, NativeRenderTarget.BoundRT.Height);
//} else {
// availableSize = this.externalBackbufferSize;
//}
Rect openGLViewport = options.Viewport;
// Setup viewport and scissor rects
GL.Viewport((int)openGLViewport.X, (int)openGLViewport.Y, (int)MathF.Ceiling(openGLViewport.W), (int)MathF.Ceiling(openGLViewport.H));
GL.Scissor((int)openGLViewport.X, (int)openGLViewport.Y, (int)MathF.Ceiling(openGLViewport.W), (int)MathF.Ceiling(openGLViewport.H));
// Clear buffers
ClearBufferMask glClearMask = 0;
ColorRgba clearColor = options.ClearColor;
if ((options.ClearFlags & ClearFlag.Color) != ClearFlag.None)
{
glClearMask |= ClearBufferMask.ColorBufferBit;
}
if ((options.ClearFlags & ClearFlag.Depth) != ClearFlag.None)
{
glClearMask |= ClearBufferMask.DepthBufferBit;
}
GL.ClearColor(clearColor.R / 255.0f, clearColor.G / 255.0f, clearColor.B / 255.0f, clearColor.A / 255.0f);
GL.ClearDepth(options.ClearDepth);
GL.Clear(glClearMask);
// Configure Rendering params
if (options.RenderMode == RenderMatrix.ScreenSpace)
{
GL.Enable(EnableCap.ScissorTest);
GL.Enable(EnableCap.DepthTest);
GL.DepthFunc(DepthFunction.Always);
}
else
{
GL.Enable(EnableCap.ScissorTest);
GL.Enable(EnableCap.DepthTest);
GL.DepthFunc(DepthFunction.Lequal);
}
Matrix4 modelView = options.ModelViewMatrix;
Matrix4 projection = options.ProjectionMatrix;
if (NativeRenderTarget.BoundRT != null)
{
modelView = Matrix4.CreateScale(new Vector3(1f, -1f, 1f)) * modelView;
if (options.RenderMode == RenderMatrix.ScreenSpace)
{
modelView = Matrix4.CreateTranslation(new Vector3(0f, -device.TargetSize.Y, 0f)) * modelView;
}
}
// Convert matrices to float arrays
GetArrayMatrix(ref modelView, ref modelViewData);
GetArrayMatrix(ref projection, ref projectionData);
// All EBOs can be used again
lastUsedEBO = 0;
}
void IGraphicsBackend.BeginRendering(IDrawDevice device, VertexBatchStore vertexData, RenderOptions options, RenderStats stats)
{
DebugCheckOpenGLErrors();
this.CheckContextCaps();
this.currentDevice = device;
this.renderOptions = options;
this.renderStats = stats;
// Upload all vertex data that we'll need during rendering
if (vertexData != null)
{
this.perVertexTypeVBO.Count = Math.Max(this.perVertexTypeVBO.Count, vertexData.Batches.Count);
for (int typeIndex = 0; typeIndex < vertexData.Batches.Count; typeIndex++)
{
// Filter out unused vertex types
IVertexBatch vertexBatch = vertexData.Batches[typeIndex];
if (vertexBatch == null)
{
continue;
}
if (vertexBatch.Count == 0)
{
continue;
}
// Generate a VBO for this vertex type if it didn't exist yet
if (this.perVertexTypeVBO[typeIndex] == 0)
{
GL.GenBuffers(1, out this.perVertexTypeVBO.Data[typeIndex]);
}
GL.BindBuffer(BufferTarget.ArrayBuffer, this.perVertexTypeVBO[typeIndex]);
// Upload all data of this vertex type as a single block
int vertexDataLength = vertexBatch.Declaration.Size * vertexBatch.Count;
using (PinnedArrayHandle pinned = vertexBatch.Lock())
{
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)vertexDataLength, IntPtr.Zero, BufferUsageHint.StreamDraw);
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)vertexDataLength, pinned.Address, BufferUsageHint.StreamDraw);
}
}
}
GL.BindBuffer(BufferTarget.ArrayBuffer, 0);
// Prepare the target surface for rendering
NativeRenderTarget.Bind(options.Target as NativeRenderTarget);
// Determine whether masked blending should use alpha-to-coverage mode
if (this.msaaIsDriverDisabled)
{
this.useAlphaToCoverageBlend = false;
}
else if (NativeRenderTarget.BoundRT != null)
{
this.useAlphaToCoverageBlend = NativeRenderTarget.BoundRT.Samples > 0;
}
else if (this.activeWindow != null)
{
this.useAlphaToCoverageBlend = this.activeWindow.IsMultisampled;
}
else
{
this.useAlphaToCoverageBlend = this.defaultGraphicsMode.Samples > 0;
}
// Determine the available size on the active rendering surface
Point2 availableSize;
if (NativeRenderTarget.BoundRT != null)
{
availableSize = new Point2(NativeRenderTarget.BoundRT.Width, NativeRenderTarget.BoundRT.Height);
}
else if (this.activeWindow != null)
{
availableSize = new Point2(this.activeWindow.Width, this.activeWindow.Height);
}
else
{
availableSize = this.externalBackbufferSize;
}
// Translate viewport coordinates to OpenGL screen coordinates (bottom-left, rising), unless rendering
// to a texture, which is laid out Duality-like (top-left, descending)
Rect openGLViewport = options.Viewport;
if (NativeRenderTarget.BoundRT == null)
{
openGLViewport.Y = (availableSize.Y - openGLViewport.H) - openGLViewport.Y;
}
// Setup viewport and scissor rects
GL.Viewport((int)openGLViewport.X, (int)openGLViewport.Y, (int)MathF.Ceiling(openGLViewport.W), (int)MathF.Ceiling(openGLViewport.H));
GL.Scissor((int)openGLViewport.X, (int)openGLViewport.Y, (int)MathF.Ceiling(openGLViewport.W), (int)MathF.Ceiling(openGLViewport.H));
// Clear buffers
ClearBufferMask glClearMask = 0;
ColorRgba clearColor = options.ClearColor;
if ((options.ClearFlags & ClearFlag.Color) != ClearFlag.None)
{
glClearMask |= ClearBufferMask.ColorBufferBit;
}
if ((options.ClearFlags & ClearFlag.Depth) != ClearFlag.None)
{
glClearMask |= ClearBufferMask.DepthBufferBit;
}
GL.ClearColor(clearColor.R / 255.0f, clearColor.G / 255.0f, clearColor.B / 255.0f, clearColor.A / 255.0f);
GL.ClearDepth((double)options.ClearDepth); // The "float version" is from OpenGL 4.1..
GL.Clear(glClearMask);
// Configure Rendering params
if (options.RenderMode == RenderMatrix.ScreenSpace)
{
GL.Enable(EnableCap.ScissorTest);
GL.Enable(EnableCap.DepthTest);
GL.DepthFunc(DepthFunction.Always);
}
else
{
GL.Enable(EnableCap.ScissorTest);
GL.Enable(EnableCap.DepthTest);
GL.DepthFunc(DepthFunction.Lequal);
}
OpenTK.Matrix4 openTkModelView;
Matrix4 modelView = options.ModelViewMatrix;
GetOpenTKMatrix(ref modelView, out openTkModelView);
GL.MatrixMode(MatrixMode.Modelview);
GL.LoadMatrix(ref openTkModelView);
OpenTK.Matrix4 openTkProjection;
Matrix4 projection = options.ProjectionMatrix;
GetOpenTKMatrix(ref projection, out openTkProjection);
GL.MatrixMode(MatrixMode.Projection);
GL.LoadMatrix(ref openTkProjection);
if (NativeRenderTarget.BoundRT != null)
{
GL.Scale(1.0f, -1.0f, 1.0f);
if (options.RenderMode == RenderMatrix.ScreenSpace)
{
GL.Translate(0.0f, -device.TargetSize.Y, 0.0f);
}
}
}