/// <summary>
/// Sets the data contained by the vertex buffer.
/// </summary>
private void SetDataInternal <T>(T[] data, Int32 offsetInBytes, Int32 countInBytes, SetDataOptions options)
{
var handle = GCHandle.Alloc(data, GCHandleType.Pinned);
try
{
using (OpenGLState.ScopedBindElementArrayBuffer(buffer))
{
var isPartialUpdate = (offsetInBytes > 0 || countInBytes < SizeInBytes);
var isDiscarding = (options == SetDataOptions.Discard);
if (isDiscarding || !isPartialUpdate)
{
gl.NamedBufferData(buffer, gl.GL_ELEMENT_ARRAY_BUFFER, this.size, isPartialUpdate ? null : handle.AddrOfPinnedObject().ToPointer(), usage);
gl.ThrowIfError();
}
if (isPartialUpdate)
{
gl.NamedBufferSubData(buffer, gl.GL_ELEMENT_ARRAY_BUFFER, (IntPtr)offsetInBytes, (IntPtr)countInBytes, handle.AddrOfPinnedObject().ToPointer());
gl.ThrowIfError();
}
}
}
finally
{
handle.Free();
}
}
/// <summary>
/// Sets the texture's data from managed memory.
/// </summary>
private unsafe void SetDataInternal <T>(Int32 level, Rectangle?rect, T[] data, Int32 startIndex, Int32 elementCount) where T : struct
{
var elementSizeInBytes = Marshal.SizeOf(typeof(T));
var region = rect ?? new Rectangle(0, 0, width, height);
var regionWidth = region.Width;
var regionHeight = region.Height;
var pixelSizeInBytes = (format == gl.GL_RGB || format == gl.GL_BGR) ? 3 : 4;
if (pixelSizeInBytes * width * height != elementSizeInBytes * elementCount)
{
throw new ArgumentException(UltravioletStrings.BufferIsWrongSize);
}
Ultraviolet.QueueWorkItem(state =>
{
var dataHandle = GCHandle.Alloc(data, GCHandleType.Pinned);
try
{
using (OpenGLState.ScopedBindTexture2D(OpenGLName))
{
var pData = dataHandle.AddrOfPinnedObject() + (startIndex * elementSizeInBytes);
gl.TextureSubImage2D(OpenGLName, gl.GL_TEXTURE_2D, level, region.X, region.Y,
region.Width, region.Height, format, type, (void *)pData);
gl.ThrowIfError();
}
}
finally { dataHandle.Free(); }
}, null, WorkItemOptions.ReturnNullOnSynchronousExecution)?.Wait();
}
/// <inheritdoc/>
protected override void Dispose(Boolean disposing)
{
if (Disposed)
{
return;
}
if (disposing)
{
if (!Ultraviolet.Disposed)
{
var glname = vao;
if (glname != 0)
{
Ultraviolet.QueueWorkItem((state) =>
{
gl.DeleteVertexArray(glname);
gl.ThrowIfError();
OpenGLState.DeleteVertexArrayObject(glname, glElementArrayBufferBinding ?? 0);
}, null, WorkItemOptions.ReturnNullOnSynchronousExecution);
}
vao = 0;
}
vbuffers.Clear();
ibuffer = null;
}
base.Dispose(disposing);
}
/// <inheritdoc/>
public override void Attach(RenderBuffer2D buffer)
{
Contract.Require(buffer, nameof(buffer));
Contract.Ensure <ArgumentException>(
buffer.Width == width &&
buffer.Height == height, OpenGLStrings.RenderBufferIsWrongSize);
Contract.EnsureNotDisposed(this, Disposed);
Ultraviolet.ValidateResource(buffer);
var oglBuffer = (OpenGLRenderBuffer2D)buffer;
Ultraviolet.QueueWorkItem(state =>
{
using (OpenGLState.ScopedBindFramebuffer(framebuffer))
{
AttachRenderBuffer(oglBuffer);
framebufferStatus = gl.CheckNamedFramebufferStatus(framebuffer, gl.GL_FRAMEBUFFER);
gl.ThrowIfError();
}
}).Wait();
oglBuffer.MarkAttached();
buffers.Add(oglBuffer);
}
/// <summary>
/// Sets the current render target.
/// </summary>
private void SetRenderTargetInternal(RenderTarget2D renderTarget,
Color?clearColor = null, Double?clearDepth = null, Int32?clearStencil = null)
{
Ultraviolet.ValidateResource(renderTarget);
var usage = renderTarget?.RenderTargetUsage ?? backBufferRenderTargetUsage;
if (usage == RenderTargetUsage.PlatformContents)
{
usage = Capabilities.SupportsPreservingRenderTargetContentInHardware ?
RenderTargetUsage.PreserveContents :
RenderTargetUsage.DiscardContents;
}
var oglRenderTarget = (OpenGLRenderTarget2D)renderTarget;
if (oglRenderTarget != this.renderTarget)
{
var targetName = gl.DefaultFramebuffer;
var targetSize = Size2.Zero;
if (oglRenderTarget != null)
{
oglRenderTarget.ValidateStatus();
targetName = oglRenderTarget.OpenGLName;
targetSize = renderTarget.Size;
}
else
{
var currentWindow = Ultraviolet.GetPlatform().Windows.GetCurrent();
if (currentWindow != null)
{
targetSize = currentWindow.DrawableSize;
}
}
OpenGLState.BindFramebuffer(targetName);
if (this.renderTarget != null)
{
this.renderTarget.UnbindWrite();
}
this.renderTarget = oglRenderTarget;
if (this.renderTarget != null)
{
this.renderTarget.BindWrite();
}
this.viewport = default(Viewport);
SetViewport(new Viewport(0, 0, targetSize.Width, targetSize.Height));
if (usage == RenderTargetUsage.DiscardContents)
{
Clear(clearColor ?? Color.FromArgb(0xFF442288), clearDepth ?? 1.0, clearStencil ?? 0);
}
}
}
/// <summary>
/// Sets the texture's data.
/// </summary>
private void SetDataInternal <T>(Int32 level, Int32 left, Int32 top, Int32 right, Int32 bottom, Int32 front, Int32 back, T[] data, Int32 startIndex, Int32 elementCount) where T : struct
{
var elementSizeInBytes = Marshal.SizeOf(typeof(T));
var width = right - left;
var height = bottom - top;
var depth = back - front;
var pixelSizeInBytes = (format == gl.GL_RGB || format == gl.GL_BGR) ? 3 : 4;
if (pixelSizeInBytes * width * height * depth != elementSizeInBytes * elementCount)
{
throw new ArgumentException(UltravioletStrings.BufferIsWrongSize);
}
Ultraviolet.QueueWorkItem(state =>
{
var dataHandle = GCHandle.Alloc(data, GCHandleType.Pinned);
try
{
using (OpenGLState.ScopedBindTexture3D(OpenGLName))
{
var pData = dataHandle.AddrOfPinnedObject() + (startIndex * elementSizeInBytes);
gl.TextureSubImage3D(OpenGLName, gl.GL_TEXTURE_3D, level, left, top, front,
right - left, bottom - top, back - front, format, type, (void *)pData);
gl.ThrowIfError();
}
}
finally { dataHandle.Free(); }
}).Wait();
}
/// <summary>
/// Initializes a new instance of the OpenGLRenderTarget2D class.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="width">The render target's width in pixels.</param>
/// <param name="height">The render target's height in pixels.</param>
/// <param name="usage">A <see cref="RenderTargetUsage"/> value specifying whether the
/// render target's data is discarded or preserved when it is bound to the graphics device.</param>
/// <param name="buffers">The collection of render buffers to attach to the target.</param>
public OpenGLRenderTarget2D(UltravioletContext uv, Int32 width, Int32 height, RenderTargetUsage usage, IEnumerable <RenderBuffer2D> buffers = null)
: base(uv)
{
Contract.EnsureRange(width > 0, nameof(width));
Contract.EnsureRange(height > 0, nameof(height));
var framebuffer = 0u;
uv.QueueWorkItem(state =>
{
using (OpenGLState.ScopedCreateFramebuffer(out framebuffer))
{
if (buffers != null)
{
foreach (OpenGLRenderBuffer2D buffer in buffers)
{
AttachRenderBuffer(buffer);
}
}
}
}).Wait();
this.width = width;
this.height = height;
this.framebuffer = framebuffer;
this.renderTargetUsage = usage;
}
/// <summary>
/// Uploads buffer data to the graphics device.
/// </summary>
private void Upload(IntPtr data, Int32 offsetInBytes, Int32 countInBytes, SetDataOptions options)
{
using (OpenGLState.ScopedBindArrayBuffer(buffer))
{
var isPartialUpdate = (offsetInBytes > 0 || countInBytes < SizeInBytes);
var isDiscarding = (options == SetDataOptions.Discard);
if (isDiscarding || !isPartialUpdate)
{
gl.NamedBufferData(buffer, gl.GL_ARRAY_BUFFER, this.size, isPartialUpdate ? null : (void *)data, usage);
gl.ThrowIfError();
/* FIX:
* I have no idea why the following code is necessary, but
* it seems to fix flickering sprites on Intel HD 4000 devices. */
if (gl.IsVertexArrayObjectAvailable)
{
var vao = (uint)OpenGLState.GL_VERTEX_ARRAY_BINDING;
gl.BindVertexArray(vao);
gl.ThrowIfError();
}
}
if (isPartialUpdate)
{
gl.NamedBufferSubData(buffer, gl.GL_ARRAY_BUFFER, (IntPtr)offsetInBytes, (IntPtr)countInBytes, (void *)data);
gl.ThrowIfError();
}
}
}
/// <summary>
/// Processes a resize operation for this texture.
/// </summary>
private void ProcessResize()
{
using (OpenGLState.ScopedBindTexture3D(texture, true))
{
gl.TexImage3D(gl.GL_TEXTURE_3D, 0, (int)internalformat,
width, height, depth, 0, format, type, null);
}
}
/// <summary>
/// Uploads texture data to the graphics device.
/// </summary>
private void Upload(Int32 level, Int32 left, Int32 top, Int32 right, Int32 bottom, Int32 front, Int32 back, IntPtr data, Int32 offsetInBytes, Int32 sizeInBytes)
{
using (OpenGLState.ScopedBindTexture3D(OpenGLName))
{
var pData = data + offsetInBytes;
gl.TextureSubImage3D(OpenGLName, gl.GL_TEXTURE_3D, level, left, top, front,
right - left, bottom - top, back - front, format, type, (void *)pData);
gl.ThrowIfError();
}
}
/// <summary>
/// Uploads texture data to the graphics device.
/// </summary>
private void Upload(Int32 level, Rectangle region, IntPtr ldata, Int32 offsetInBytes)
{
using (OpenGLState.ScopedBindTexture2D(OpenGLName))
{
var pData = ldata + offsetInBytes;
gl.TextureSubImage2D(OpenGLName, gl.GL_TEXTURE_2D, level, region.X, region.Y,
region.Width, region.Height, format, type, (void *)pData);
gl.ThrowIfError();
}
}
/// <inheritdoc/>
public override void Apply()
{
var program = programs[programIndex];
OpenGLState.UseProgram(program);
foreach (var uniform in program.Uniforms)
{
uniform.Apply();
}
}
/// <summary>
/// Binds the geometry stream's buffers to the device in preparation for rendering.
/// </summary>
private void BindBuffers(UInt32?program, UInt32?offset)
{
unsafe
{
var previousBuffer = (uint)OpenGLState.GL_ARRAY_BUFFER_BINDING;
if (IsUsingVertexArrayObject)
{
using (OpenGLState.ScopedBindVertexArrayObject(vao, glElementArrayBufferBinding ?? 0, force: !gl.IsVertexAttribBindingAvailable))
{
if (program.HasValue)
{
DisableVertexAttributesOnCachedProgram();
}
if (gl.IsVertexAttribBindingAvailable)
{
for (int i = 0; i < vbuffers.Count; i++)
{
var binding = vbuffers[i];
BindVertexAttributesForBuffer_NewAPI(binding.VertexBuffer,
(UInt32)i, (UInt32)binding.InstanceFrequency, program, offset);
}
}
else
{
for (int i = 0; i < vbuffers.Count; i++)
{
var binding = vbuffers[i];
BindVertexAttributesForBuffer_OldAPI(binding.VertexBuffer,
(UInt32)i, (UInt32)binding.InstanceFrequency, program, offset);
}
}
}
}
else
{
if (program.HasValue)
{
DisableVertexAttributesOnCachedProgram();
}
for (int i = 0; i < vbuffers.Count; i++)
{
var binding = vbuffers[i];
BindVertexAttributesForBuffer_OldAPI(binding.VertexBuffer,
(UInt32)i, (UInt32)binding.InstanceFrequency, program, offset);
}
OpenGLState.BindArrayBuffer(previousBuffer);
}
}
}
/// <inheritdoc/>
public void SetTexture(Int32 sampler, Texture2D texture)
{
Contract.EnsureRange(sampler >= 0 && sampler < maxTextureStages, nameof(sampler));
Contract.EnsureNotDisposed(this, Disposed);
Ultraviolet.ValidateResource(texture);
if (texture != null && texture.BoundForWriting)
{
throw new InvalidOperationException(OpenGLStrings.RenderBufferCannotBeUsedAsTexture);
}
if (texture != null && texture.WillNotBeSampled)
{
throw new InvalidOperationException(OpenGLStrings.RenderBufferWillNotBeSampled);
}
if (this.textures[sampler] != texture)
{
var textureName = (texture == null) ? 0 : ((IOpenGLResource)texture).OpenGLName;
OpenGLState.ActiveTexture((uint)(gl.GL_TEXTURE0 + sampler));
OpenGLState.Texture2D(textureName);
if (this.textures[sampler] != null)
{
((IBindableResource)this.textures[sampler]).UnbindRead();
}
this.textures[sampler] = texture;
if (this.textures[sampler] != null)
{
((IBindableResource)this.textures[sampler]).BindRead();
}
if (!capabilities.SupportsIndependentSamplerState)
{
var samplerState = (OpenGLSamplerState)(GetSamplerState(sampler) ?? SamplerState.LinearClamp);
for (int i = 0; i < samplerStates.Length; i++)
{
if (this.textures[i] == texture)
{
samplerState.Apply(sampler);
}
}
}
}
}
/// <summary>
/// Applies the geometry stream to the graphics device.
/// </summary>
public void Apply()
{
Contract.EnsureNotDisposed(this, Disposed);
if (IsUsingVertexArrayObject)
{
OpenGLState.BindVertexArrayObject(vao, glElementArrayBufferBinding ?? 0);
}
else
{
if (ibuffer != null)
{
OpenGLState.BindElementArrayBuffer(ibuffer.OpenGLName);
}
}
}
/// <inheritdoc/>
public override void Apply()
{
if (effectImplementation == null)
{
throw new InvalidOperationException(OpenGLStrings.EffectPassNotAssociatedWithEffect);
}
effectImplementation.OnApply();
var program = Programs[programIndex];
OpenGLState.UseProgram(program);
foreach (var uniform in program.Uniforms)
{
uniform.Apply();
}
}
/// <summary>
/// Uploads buffer data to the graphics device.
/// </summary>
private void Upload(IntPtr data, Int32 offsetInBytes, Int32 countInBytes, SetDataOptions options)
{
using (OpenGLState.ScopedBindElementArrayBuffer(buffer))
{
var isPartialUpdate = (offsetInBytes > 0 || countInBytes < SizeInBytes);
var isDiscarding = (options == SetDataOptions.Discard);
if (isDiscarding || !isPartialUpdate)
{
gl.NamedBufferData(buffer, gl.GL_ELEMENT_ARRAY_BUFFER, this.size, isPartialUpdate ? null : (void *)data, usage);
gl.ThrowIfError();
}
if (isPartialUpdate)
{
gl.NamedBufferSubData(buffer, gl.GL_ELEMENT_ARRAY_BUFFER, (IntPtr)offsetInBytes, (IntPtr)countInBytes, (void *)data);
gl.ThrowIfError();
}
}
}
/// <inheritdoc/>
public void SetGeometryStream(GeometryStream stream)
{
Contract.EnsureNotDisposed(this, Disposed);
Ultraviolet.ValidateResource(stream);
if (stream == null)
{
this.geometryStream = null;
OpenGLState.BindVertexArrayObject(0, 0);
}
else
{
if (this.geometryStream != stream)
{
this.geometryStream = (OpenGLGeometryStream)stream;
this.geometryStream.Apply();
}
}
}
/// <summary>
/// Initializes a new instance of the OpenGLIndexBuffer.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="itype">The index element type.</param>
/// <param name="icount">The index element count.</param>
/// <param name="usage">The buffer's usage type.</param>
public OpenGLIndexBuffer(UltravioletContext uv, IndexBufferElementType itype, Int32 icount, UInt32 usage)
: base(uv, itype, icount)
{
Contract.EnsureRange(icount >= 0, nameof(icount));
this.usage = usage;
this.size = new IntPtr(GetElementSize() * icount);
var buffer = 0u;
uv.QueueWorkItem(state =>
{
using (OpenGLState.ScopedCreateElementArrayBuffer(out buffer))
{
gl.NamedBufferData(buffer, gl.GL_ELEMENT_ARRAY_BUFFER, size, null, usage);
gl.ThrowIfError();
}
}).Wait();
this.buffer = buffer;
}
/// <summary>
/// Gets the render target's data.
/// </summary>
/// <param name="data">An array to populate with the render target's data.</param>
/// <param name="region">The region of the render target from which to retrieve data.</param>
private unsafe void GetDataInternal(Color[] data, Rectangle region)
{
using (OpenGLState.ScopedBindFramebuffer(framebuffer, true))
{
fixed(Color *pData = data)
{
if (gl.IsReadBufferAvailable)
{
gl.ReadBuffer(gl.GL_COLOR_ATTACHMENT0);
gl.ThrowIfError();
}
gl.ReadPixels(region.X, region.Y, region.Width, region.Height, gl.GL_RGBA, gl.GL_UNSIGNED_BYTE, pData);
gl.ThrowIfError();
}
}
// OpenGL texture data is stored upside down and in the wrong color format,
// so we need to convert that to what our caller expects.
var rowsToProcess = (Height % 2 == 0) ? Height / 2 : 1 + Height / 2;
for (int y = 0; y < rowsToProcess; y++)
{
var ySrc = (y);
var yDst = (Height - 1) - y;
for (int x = 0; x < Width; x++)
{
var ixSrc = (ySrc * Width) + x;
var ixDst = (yDst * Width) + x;
var colorSrc = new Color(data[ixSrc].PackedValue);
var colorDst = new Color(data[ixDst].PackedValue);
data[ixDst] = colorSrc;
data[ixSrc] = colorDst;
}
}
}
/// <summary>
/// Initializes a new instance of the OpenGLVertexBuffer.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="vdecl">The vertex declaration for this buffer.</param>
/// <param name="vcount">The number of vertices in the buffer.</param>
/// <param name="usage">The buffer's usage type.</param>
public OpenGLVertexBuffer(UltravioletContext uv, VertexDeclaration vdecl, Int32 vcount, UInt32 usage)
: base(uv, vdecl, vcount)
{
Contract.Require(vdecl, nameof(vdecl));
this.vdecl = vdecl;
this.usage = usage;
this.size = new IntPtr(vdecl.VertexStride * vcount);
var buffer = 0u;
uv.QueueWorkItem(state =>
{
using (OpenGLState.ScopedCreateArrayBuffer(out buffer))
{
gl.NamedBufferData(buffer, gl.GL_ARRAY_BUFFER, size, null, usage);
gl.ThrowIfError();
}
}).Wait();
this.buffer = buffer;
}
/// <summary>
/// Uploads texture data to the graphics device.
/// </summary>
private unsafe Task Upload(Int32 level, Rectangle region, IntPtr ldata, Int32 startIndex, Int32 elementSizeInBytes)
{
if (Ultraviolet.IsExecutingOnCurrentThread)
{
using (OpenGLState.ScopedBindTexture2D(OpenGLName))
{
var pData = ldata + (startIndex * elementSizeInBytes);
gl.TextureSubImage2D(OpenGLName, gl.GL_TEXTURE_2D, level, region.X, region.Y,
region.Width, region.Height, format, type, (void *)pData);
gl.ThrowIfError();
}
return(null);
}
else
{
return(Ultraviolet.QueueWorkItem(state =>
{
Upload(level, region, ldata, startIndex, elementSizeInBytes);
}));
}
}
/// <summary>
/// Sets the data contained by the vertex buffer.
/// </summary>
private void SetDataInternal <T>(T[] data, Int32 offsetInBytes, Int32 countInBytes, SetDataOptions options)
{
var handle = GCHandle.Alloc(data, GCHandleType.Pinned);
try
{
using (OpenGLState.ScopedBindArrayBuffer(buffer))
{
var isPartialUpdate = (offsetInBytes > 0 || countInBytes < SizeInBytes);
var isDiscarding = (options == SetDataOptions.Discard);
if (isDiscarding || !isPartialUpdate)
{
gl.NamedBufferData(buffer, gl.GL_ARRAY_BUFFER, this.size, isPartialUpdate ? null : handle.AddrOfPinnedObject().ToPointer(), usage);
gl.ThrowIfError();
/* FIX:
* I have no idea why the following code is necessary, but
* it seems to fix flickering sprites on Intel HD 4000 devices. */
if (gl.IsVertexArrayObjectAvailable)
{
var vao = (uint)OpenGLState.GL_VERTEX_ARRAY_BINDING;
gl.BindVertexArray(vao);
gl.ThrowIfError();
}
}
if (isPartialUpdate)
{
gl.NamedBufferSubData(buffer, gl.GL_ARRAY_BUFFER, (IntPtr)offsetInBytes, (IntPtr)countInBytes, handle.AddrOfPinnedObject().ToPointer());
gl.ThrowIfError();
}
}
}
finally
{
handle.Free();
}
}
/// <summary>
/// Reallocates the renderbuffer's storage.
/// </summary>
/// <param name="width">The renderbuffer's width in pixels.</param>
/// <param name="height">The renderbuffer's height in pixels.</param>
private void AllocateRenderbufferStorage(Int32 width, Int32 height)
{
using (OpenGLState.ScopedBindRenderbuffer(renderbuffer, true))
{
switch (format)
{
case RenderBufferFormat.Color:
{
var internalformat = OpenGLTextureUtil.GetInternalFormatFromBytesPerPixel(4, SrgbEncoded);
gl.RenderbufferStorage(gl.GL_RENDERBUFFER, internalformat, width, height);
gl.ThrowIfError();
}
break;
case RenderBufferFormat.Depth24Stencil8:
gl.RenderbufferStorage(gl.GL_RENDERBUFFER, gl.GL_DEPTH24_STENCIL8, width, height);
gl.ThrowIfError();
break;
case RenderBufferFormat.Depth32:
gl.RenderbufferStorage(gl.GL_RENDERBUFFER, gl.GL_DEPTH_COMPONENT32, width, height);
gl.ThrowIfError();
break;
case RenderBufferFormat.Depth16:
gl.RenderbufferStorage(gl.GL_RENDERBUFFER, gl.GL_DEPTH_COMPONENT16, width, height);
gl.ThrowIfError();
break;
case RenderBufferFormat.Stencil8:
gl.RenderbufferStorage(gl.GL_RENDERBUFFER, gl.GL_STENCIL_INDEX8, width, height);
break;
default:
throw new NotSupportedException("format");
}
}
}
/// <inheritdoc/>
public override void Attach(IndexBuffer ibuffer)
{
Contract.Require(ibuffer, nameof(ibuffer));
Contract.EnsureNot(HasIndices, UltravioletStrings.GeometryStreamAlreadyHasIndices);
Contract.EnsureNotDisposed(this, Disposed);
Ultraviolet.ValidateResource(ibuffer);
var oglIndexBuffer = (OpenGLIndexBuffer)ibuffer;
var oglIndexBufferName = oglIndexBuffer.OpenGLName;
this.ibuffer = oglIndexBuffer;
if (IsUsingVertexArrayObject)
{
using (OpenGLState.ScopedBindVertexArrayObject(vao, 0, force: true))
{
OpenGLState.BindElementArrayBuffer(oglIndexBufferName);
}
}
this.glElementArrayBufferBinding = oglIndexBufferName;
this.indexBufferElementType = ibuffer.IndexElementType;
}
/// <inheritdoc/>
public override void SetDataAligned <T>(T[] data, Int32 dataOffset, Int32 dataCount, Int32 bufferOffset, out Int32 bufferSize, SetDataOptions options)
{
Contract.Require(data, nameof(data));
Contract.EnsureRange(dataCount > 0, nameof(dataCount));
Contract.EnsureRange(dataOffset >= 0 && dataOffset + dataCount <= data.Length, nameof(dataOffset));
Contract.EnsureRange(bufferOffset >= 0, nameof(bufferOffset));
Contract.Ensure(dataCount <= IndexCount, OpenGLStrings.DataTooLargeForBuffer);
var indexStride = GetElementSize();
bufferSize = indexStride * dataCount;
var handle = GCHandle.Alloc(data, GCHandleType.Pinned);
try
{
var caps = (OpenGLGraphicsCapabilities)Ultraviolet.GetGraphics().Capabilities;
if (caps.MinMapBufferAlignment > 0)
{
bufferSize = Math.Min(Math.Max(caps.MinMapBufferAlignment, MathUtil.FindNextPowerOfTwo(bufferSize)), SizeInBytes - bufferOffset);
}
using (OpenGLState.ScopedBindElementArrayBuffer(buffer))
{
var isPartialUpdate = (bufferOffset > 0 || bufferSize < SizeInBytes);
var isDiscarding = (options == SetDataOptions.Discard);
if (isDiscarding || !isPartialUpdate)
{
gl.NamedBufferData(buffer, gl.GL_ELEMENT_ARRAY_BUFFER, this.size, isPartialUpdate ? null : handle.AddrOfPinnedObject().ToPointer(), usage);
gl.ThrowIfError();
}
if (isPartialUpdate)
{
if (caps.MinMapBufferAlignment >= 0)
{
var bufferRangeAccess = gl.GL_MAP_WRITE_BIT | (options == SetDataOptions.NoOverwrite ? gl.GL_MAP_UNSYNCHRONIZED_BIT : 0);
var bufferRangePtr = (Byte *)gl.MapNamedBufferRange(buffer, gl.GL_ELEMENT_ARRAY_BUFFER,
(IntPtr)bufferOffset, (IntPtr)bufferSize, bufferRangeAccess);
gl.ThrowIfError();
var sourceRangePtr = (Byte *)handle.AddrOfPinnedObject() + (dataOffset * indexStride);
var sourceSizeInBytes = dataCount * indexStride;
for (int i = 0; i < sourceSizeInBytes; i++)
{
*bufferRangePtr++ = *sourceRangePtr++;
}
gl.UnmapNamedBuffer(buffer, gl.GL_ELEMENT_ARRAY_BUFFER);
gl.ThrowIfError();
}
else
{
gl.NamedBufferSubData(buffer, gl.GL_ELEMENT_ARRAY_BUFFER,
(IntPtr)bufferOffset, (IntPtr)bufferSize, (Byte *)handle.AddrOfPinnedObject().ToPointer() + (dataOffset * indexStride));
gl.ThrowIfError();
}
}
}
}
finally
{
handle.Free();
}
}
/// <summary>
/// Initializes a new instance of the OpenGLUltravioletGraphics class.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="configuration">The Ultraviolet Framework configuration settings for the current context.</param>
/// <param name="versionRequested">The OpenGL context version which is required by the application.</param>
public unsafe OpenGLUltravioletGraphics(OpenGLUltravioletContext uv, OpenGLUltravioletConfiguration configuration, Version versionRequested)
: base(uv)
{
var masterptr = ((SDL2UltravioletWindowInfo)uv.GetPlatform().Windows).GetMasterPointer();
if (!TryInitializeGLContext(masterptr, configuration))
{
var attemptedVersionMajor = 0;
var attemptedVersionMinor = 0;
if (SDL_GL_GetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, &attemptedVersionMajor) < 0)
{
throw new SDL2Exception();
}
if (SDL_GL_GetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, &attemptedVersionMinor) < 0)
{
throw new SDL2Exception();
}
var attemptedVersion = new Version(attemptedVersionMajor, attemptedVersionMinor, 0, 0);
var isGLES = (uv.Platform == UltravioletPlatform.Android || uv.Platform == UltravioletPlatform.iOS);
if (isGLES && attemptedVersion >= new Version(3, 0) && (configuration.MinimumOpenGLESVersion ?? new Version(2, 0)) <= new Version(2, 0))
{
if (SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2) < 0)
{
throw new SDL2Exception();
}
if (SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0) < 0)
{
throw new SDL2Exception();
}
if (!TryInitializeGLContext(masterptr, configuration))
{
throw new SDL2Exception();
}
}
else
{
throw new SDL2Exception();
}
}
if (SDL_GL_SetSwapInterval(1) < 0 && uv.Platform != UltravioletPlatform.iOS)
{
throw new SDL2Exception();
}
if (gl.Initialized)
{
gl.Uninitialize();
}
gl.Initialize(new OpenGLInitializer());
if (!gl.IsVersionAtLeast(versionRequested))
{
throw new InvalidOperationException(OpenGLStrings.DoesNotMeetMinimumVersionRequirement.Format(gl.MajorVersion, gl.MinorVersion, versionRequested.Major, versionRequested.Minor));
}
OpenGLState.ResetCache();
if (!VerifyCapabilities())
{
throw new NotSupportedException(OpenGLStrings.UnsupportedGraphicsDevice);
}
if (configuration.Debug && configuration.DebugCallback != null)
{
InitializeDebugOutput(configuration);
}
this.capabilities = new OpenGLGraphicsCapabilities(configuration);
if (capabilities.SrgbEncodingEnabled && gl.IsFramebufferSrgbAvailable)
{
gl.Enable(gl.GL_FRAMEBUFFER_SRGB);
gl.ThrowIfError();
}
this.maxTextureStages = gl.GetInteger(gl.GL_MAX_TEXTURE_IMAGE_UNITS);
this.textures = new Texture[maxTextureStages];
this.samplerStates = new SamplerState[maxTextureStages];
this.samplerObjects = capabilities.SupportsIndependentSamplerState ? new OpenGLSamplerObject[maxTextureStages] : null;
this.backBufferRenderTargetUsage = configuration.BackBufferRenderTargetUsage;
if (samplerObjects != null)
{
for (int i = 0; i < samplerObjects.Length; i++)
{
samplerObjects[i] = new OpenGLSamplerObject(Ultraviolet);
samplerObjects[i].Bind((uint)i);
}
}
OpenGLState.VerifyCache();
}
/// <summary>
/// Binds the specified buffer's vertex attributes to the currently cached program using the new API.
/// </summary>
private unsafe void BindVertexAttributesForBuffer_NewAPI(OpenGLVertexBuffer vbuffer, UInt32 binding, UInt32 frequency, UInt32?program, UInt32?offset)
{
using (OpenGLState.ScopedBindVertexArrayObject(vao, glElementArrayBufferBinding ?? 0))
{
if (program.HasValue || offset.HasValue)
{
gl.VertexArrayVertexBuffer(vao, binding, vbuffer.OpenGLName, (IntPtr)(offset ?? 0), vbuffer.VertexDeclaration.VertexStride);
gl.ThrowIfError();
}
if (program.HasValue)
{
gl.VertexArrayBindingDivisor(vao, binding, frequency);
gl.ThrowIfError();
var position = 0u;
foreach (var element in vbuffer.VertexDeclaration)
{
var name = GetVertexAttributeNameFromUsage(element.Usage, element.Index);
var size = 0;
var stride = 0;
var normalize = false;
var type = GetVertexFormatGL(element.Format, out size, out stride, out normalize);
var category = OpenGLAttribCategory.Single;
var location = (UInt32)OpenGLState.CurrentProgram.GetAttribLocation(name, out category);
if (location >= 0)
{
gl.VertexArrayAttribBinding(vao, location, binding);
gl.ThrowIfError();
gl.EnableVertexArrayAttrib(vao, location);
gl.ThrowIfError();
unsafe
{
switch (category)
{
case OpenGLAttribCategory.Single:
{
gl.VertexArrayAttribFormat(vao, location, size, type, normalize, position);
gl.ThrowIfError();
}
break;
case OpenGLAttribCategory.Double:
{
if (!gl.IsDoublePrecisionVertexAttribAvailable)
{
throw new NotSupportedException(OpenGLStrings.DoublePrecisionVAttribsNotSupported);
}
gl.VertexArrayAttribLFormat(vao, location, size, type, position);
gl.ThrowIfError();
}
break;
case OpenGLAttribCategory.Integer:
{
if (!gl.IsIntegerVertexAttribAvailable)
{
throw new NotSupportedException(OpenGLStrings.IntegerVAttribsNotSupported);
}
gl.VertexArrayAttribIFormat(vao, location, size, type, position);
gl.ThrowIfError();
}
break;
}
}
}
position += (uint)stride;
}
}
}
}
/// <summary>
/// Binds the specified buffer's vertex attributes to the currently cached program using the old API.
/// </summary>
private unsafe void BindVertexAttributesForBuffer_OldAPI(OpenGLVertexBuffer vbuffer, UInt32 binding, UInt32 frequency, UInt32?program, UInt32?offset)
{
OpenGLState.BindArrayBuffer(vbuffer.OpenGLName);
var position = offset ?? this.offset;
foreach (var element in vbuffer.VertexDeclaration)
{
var name = GetVertexAttributeNameFromUsage(element.Usage, element.Index);
var size = 0;
var stride = 0;
var normalize = false;
var type = GetVertexFormatGL(element.Format, out size, out stride, out normalize);
var category = OpenGLAttribCategory.Single;
var location = (UInt32)OpenGLState.CurrentProgram.GetAttribLocation(name, out category);
if (location >= 0)
{
if (program.HasValue)
{
if (gl.IsInstancedRenderingAvailable)
{
gl.VertexAttribDivisor(location, frequency);
gl.ThrowIfError();
}
else
{
if (frequency != 0)
{
throw new NotSupportedException(OpenGLStrings.InstancedRenderingNotSupported);
}
}
gl.EnableVertexAttribArray(location);
gl.ThrowIfError();
}
switch (category)
{
case OpenGLAttribCategory.Single:
{
gl.VertexAttribPointer(location, size, type, normalize, vbuffer.VertexDeclaration.VertexStride, (void *)(position));
gl.ThrowIfError();
}
break;
case OpenGLAttribCategory.Double:
{
if (!gl.IsDoublePrecisionVertexAttribAvailable)
{
throw new NotSupportedException(OpenGLStrings.DoublePrecisionVAttribsNotSupported);
}
gl.VertexAttribLPointer(location, size, type, vbuffer.VertexDeclaration.VertexStride, (void *)(position));
gl.ThrowIfError();
}
break;
case OpenGLAttribCategory.Integer:
{
if (!gl.IsIntegerVertexAttribAvailable)
{
throw new NotSupportedException(OpenGLStrings.IntegerVAttribsNotSupported);
}
gl.VertexAttribIPointer(location, size, type, vbuffer.VertexDeclaration.VertexStride, (void *)(position));
gl.ThrowIfError();
}
break;
}
}
position += (uint)stride;
}
}
/// <summary>
/// Creates the underlying native OpenGL texture with the specified format and data.
/// </summary>
private void CreateNativeTexture(UltravioletContext uv, UInt32 internalformat, Int32 width, Int32 height, Int32 depth,
UInt32 format, UInt32 type, void *pixels, Boolean immutable)
{
if (uv.IsRunningInServiceMode)
{
throw new NotSupportedException(UltravioletStrings.NotSupportedInServiceMode);
}
this.width = width;
this.height = height;
this.depth = depth;
this.internalformat = internalformat;
this.format = format;
this.type = type;
this.immutable = immutable;
this.srgbEncoded =
internalformat == gl.GL_SRGB ||
internalformat == gl.GL_SRGB_ALPHA ||
internalformat == gl.GL_SRGB8 ||
internalformat == gl.GL_SRGB8_ALPHA8;
this.texture = uv.QueueWorkItem(state =>
{
uint glname;
using (OpenGLState.ScopedCreateTexture3D(out glname))
{
if (gl.IsTextureMaxLevelSupported)
{
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_MAX_LEVEL, 0);
gl.ThrowIfError();
}
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_MIN_FILTER, (int)gl.GL_LINEAR);
gl.ThrowIfError();
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_MAG_FILTER, (int)gl.GL_LINEAR);
gl.ThrowIfError();
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_WRAP_R, (int)gl.GL_CLAMP_TO_EDGE);
gl.ThrowIfError();
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_WRAP_S, (int)gl.GL_CLAMP_TO_EDGE);
gl.ThrowIfError();
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_WRAP_T, (int)gl.GL_CLAMP_TO_EDGE);
gl.ThrowIfError();
if (immutable)
{
if (gl.IsTextureStorageAvailable)
{
gl.TextureStorage3D(glname, gl.GL_TEXTURE_3D, 1, internalformat, width, height, depth);
gl.ThrowIfError();
if (pixels != null)
{
gl.TextureSubImage3D(glname, gl.GL_TEXTURE_3D, 0, 0, 0, 0, width, height, depth, format, type, pixels);
gl.ThrowIfError();
}
}
else
{
gl.TextureImage3D(glname, gl.GL_TEXTURE_3D, 0, (int)internalformat, width, height, depth, 0, format, type, pixels);
gl.ThrowIfError();
}
}
}
if (!immutable)
{
using (OpenGLState.ScopedBindTexture3D(glname, true))
{
gl.TexImage3D(gl.GL_TEXTURE_3D, 0, (int)internalformat, width, height, depth, 0, format, type, pixels);
gl.ThrowIfError();
}
}
return(glname);
}).Result;
}
