/// <summary>
/// Uploads the specified data block into this buffer, replacing all previous contents.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="buffer"></param>
/// <param name="data">An array containing the data that will be uploaded.</param>
/// <param name="index">The array starting index from which to start uploading data.</param>
/// <param name="count">The number of elements from the array that should be uploaded.</param>
public static void LoadData <T>(this INativeGraphicsBuffer buffer, T[] data, int index, int count) where T : struct
{
if (index < 0)
{
throw new ArgumentOutOfRangeException("index", "Index cannot be negative");
}
if (count < 0)
{
throw new ArgumentOutOfRangeException("count", "Count cannot be negative");
}
if (index + count > data.Length)
{
throw new ArgumentOutOfRangeException("count", "Index + Count cannot exceed the specified arrays length.");
}
int itemSize = Marshal.SizeOf(typeof(T));
using (PinnedArrayHandle pinned = new PinnedArrayHandle(data))
{
IntPtr dataAddress = IntPtr.Add(pinned.Address, index * itemSize);
buffer.LoadData(
dataAddress,
count * itemSize);
}
}
public static void LoadData <T>(
this INativeAudioBuffer buffer,
int sampleRate,
T[] data,
int dataLength,
AudioDataLayout dataLayout,
AudioDataElementType dataElementType) where T : struct
{
if (dataLength < 0)
{
throw new ArgumentOutOfRangeException("dataLength", "Data length cannot be negative");
}
if (dataLength > data.Length)
{
throw new ArgumentOutOfRangeException("dataLength", "Data length cannot exceed the specified arrays length.");
}
int itemSize = Marshal.SizeOf(typeof(T));
using (PinnedArrayHandle pinned = new PinnedArrayHandle(data))
{
buffer.LoadData(
sampleRate,
pinned.Address,
itemSize * dataLength,
dataLayout,
dataElementType);
}
}
/// <summary>
/// Retrieves the textures pixel data from video memory in the Rgba8 format.
/// As a storage array type, either byte or <see cref="ColorRgba"/> is recommended.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="texture"></param>
/// <param name="target">The buffer to store pixel values into.</param>
/// <param name="dataLayout">The desired color layout of the specified buffer.</param>
/// <param name="dataElementType">The desired color element type of the specified buffer.</param>
public static void GetData <T>(
this INativeTexture texture,
T[] target,
ColorDataLayout dataLayout,
ColorDataElementType dataElementType)
{
using (PinnedArrayHandle pinned = new PinnedArrayHandle(target))
{
texture.GetData(
pinned.Address,
dataLayout,
dataElementType);
}
}
[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);
}
}
}
}
/// <summary>
/// Uploads the specified pixel data in RGBA format to video memory. A call to <see cref="INativeTexture.SetupEmpty"/>
/// is to be considered required for this.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="texture"></param>
/// <param name="format">The textures internal format.</param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="data">The block of pixel data to transfer.</param>
/// <param name="dataLayout">The color layout of the specified data block.</param>
/// <param name="dataElementType">The color element type of the specified data block.</param>
public static void LoadData <T>(
this INativeTexture texture,
TexturePixelFormat format,
int width, int height,
T[] data,
ColorDataLayout dataLayout,
ColorDataElementType dataElementType) where T : struct
{
using (PinnedArrayHandle pinned = new PinnedArrayHandle(data))
{
texture.LoadData(
format,
width,
height,
pinned.Address,
dataLayout,
dataElementType);
}
}
/// <summary>
/// Retrieves the main rendering buffer's pixel data from video memory in the Rgba8 format.
/// As a storage array type, either byte or <see cref="ColorRgba"/> is recommended.
/// </summary>
/// <param name="target">The target buffer to store transferred pixel data in.</param>
/// <param name="dataLayout">The desired color layout of the specified buffer.</param>
/// <param name="dataElementType">The desired color element type of the specified buffer.</param>
/// <param name="x">The x position of the rectangular area to read.</param>
/// <param name="y">The y position of the rectangular area to read.</param>
/// <param name="width">The width of the rectangular area to read. Defaults to the rendering targets width.</param>
/// <param name="height">The height of the rectangular area to read. Defaults to the rendering targets height.</param>
public static void GetOutputPixelData <T>(
this IGraphicsBackend backend,
T[] target,
ColorDataLayout dataLayout,
ColorDataElementType dataElementType,
int x, int y,
int width, int height) where T : struct
{
using (PinnedArrayHandle pinned = new PinnedArrayHandle(target))
{
backend.GetOutputPixelData(
pinned.Address,
dataLayout,
dataElementType,
x, y,
width,
height);
}
}
/// <summary>
/// Retrieves the rendering targets pixel data from video memory in the Rgba8 format.
/// As a storage array type, either byte or <see cref="ColorRgba"/> is recommended.
/// </summary>
/// <param name="renderTarget"></param>
/// <param name="buffer">The target buffer to store transferred pixel data in.</param>
/// <param name="dataLayout">The desired color layout of the specified buffer.</param>
/// <param name="dataElementType">The desired color element type of the specified buffer.</param>
/// <param name="targetIndex">The target texture lists index to read from.</param>
/// <param name="x">The x position of the rectangular area to read.</param>
/// <param name="y">The y position of the rectangular area to read.</param>
/// <param name="width">The width of the rectangular area to read. Defaults to the rendering targets width.</param>
/// <param name="height">The height of the rectangular area to read. Defaults to the rendering targets height.</param>
public static void GetData <T>(
this INativeRenderTarget renderTarget,
T[] buffer,
ColorDataLayout dataLayout,
ColorDataElementType dataElementType,
int targetIndex,
int x, int y,
int width, int height) where T : struct
{
using (PinnedArrayHandle pinned = new PinnedArrayHandle(buffer))
{
renderTarget.GetData(
pinned.Address,
dataLayout,
dataElementType,
targetIndex,
x, y,
width,
height);
}
}
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);
}
}
}
