/// <summary>
/// Upload partial data to the buffer.
/// </summary>
/// <param name="data">The data to upload.</param>
/// <param name="size">The data's size in bytes.</param>
/// <param name="offset">The offset to upload from.</param>
public void UploadPartial(IntPtr data, uint size, uint offset = 0)
{
var offsetPtr = (IntPtr)offset;
EnsureBound(Pointer, Type);
Gl.BufferSubData(Type, offsetPtr, size, data);
}
public void BufferData()
{
Gl.BindVertexArray(arrayHandle);
if (used > 0 && dirty)
{
unsafe
{
fixed(int *p = data)
{
Gl.BindBuffer(BufferTarget.ArrayBuffer, bufferHandle);
// BufferSubData if we can
if (used <= lastUsed < used)
{
Gl.BufferSubData(BufferTarget.ArrayBuffer, (IntPtr)0, (uint)(used * vertexSize), (IntPtr)p);
}
else
{
Gl.BufferData(BufferTarget.ArrayBuffer, (uint)(used * vertexSize), (IntPtr)p, BufferUsage.StaticDraw);
lastUsed = used;
}
Gl.BindBuffer(BufferTarget.ArrayBuffer, 0);
}
}
dirty = false;
// Clear the data from memory as it is now stored on the GPU
data = null;
}
Gl.BindVertexArray(0);
}
public void ReplaceData(int[] data, IntPtr offset)
{
if (data == null)
{
throw new ArgumentNullException(nameof(data));
}
Gl.BufferSubData(BufferTarget.ElementArrayBuffer, offset, sizeof(int) * (uint)data.Length, data);
}
public void BufferSubData(long offset, long size, IntPtr data)
{
unsafe
{
Gl.BufferSubData(Target, (void *)offset, (void *)size, data.ToPointer());
GlHelper.GetError();
}
}
static void Main(string[] args)
{
Glfw.Init();
Glfw.WindowHint(Hint.ContextVersionMajor, 4);
Glfw.WindowHint(Hint.ContextVersionMinor, 6);
Glfw.WindowHint(Hint.OpenglProfile, Profile.Compatibility);
Window window = Glfw.CreateWindow(1080, 720, "Yeet", Monitor.None, Window.None);
// `Gl.Initialize()` has to be don before `Glfw.MakeContextCurrent(window)`
// [How Do I Initialize OpenGL.NET with GLFW.Net?](https://stackoverflow.com/questions/61318104/how-do-i-initialize-opengl-net-with-glfw-net/61319044?noredirect=1#comment108476826_61319044)
Gl.Initialize();
Glfw.MakeContextCurrent(window);
var v = Gl.GetString(StringName.Version);
Console.WriteLine(v);
uint vao = Gl.CreateVertexArray();
Gl.BindVertexArray(vao);
uint vbo = Gl.GenBuffer();
Gl.BindBuffer(BufferTarget.ArrayBuffer, vbo);
var vertices = new float[] { -0.5f, -0.5f, 0.5f, -0.5f, 0.0f, 0.5f };
Gl.BufferData(BufferTarget.ArrayBuffer, (uint)(4 * vertices.Length), null, BufferUsage.StaticDraw);
IntPtr unmanagedPointer = Marshal.AllocHGlobal(4 * vertices.Length);
Marshal.Copy(vertices, 0, unmanagedPointer, vertices.Length);
Gl.BufferSubData(BufferTarget.ArrayBuffer, new IntPtr(0), (uint)(4 * vertices.Length), unmanagedPointer);
Marshal.FreeHGlobal(unmanagedPointer);
//Gl.BufferSubData(BufferTarget.ArrayBuffer, new IntPtr(0), (uint)(4 * vertices.Length), vertices);
Gl.VertexAttribPointer(0, 2, VertexAttribType.Float, false, 0, null);
while (!Glfw.WindowShouldClose(window))
{
Glfw.PollEvents();
Gl.ClearColor(0.0f, 1.0f, 1.0f, 1.0f);
Gl.Clear(ClearBufferMask.ColorBufferBit);
Gl.BindVertexArray(vao);
Gl.EnableVertexAttribArray(0);
Gl.DrawArrays(PrimitiveType.Triangles, 0, 3);
Gl.DisableVertexAttribArray(0);
Gl.BindVertexArray(0);
Glfw.SwapBuffers(window);
}
Glfw.DestroyWindow(window);
Glfw.Terminate();
}
public void Update(IEnumerable <T> newData, int offset)
{
var array = newData.ToArray();
offset = Math.Clamp(offset, 0, array.Length);
int dataSize = Math.Min(array.Length - offset, Count) * size;
Gl.BindBuffer(BufferTarget.ArrayBuffer, Handle);
Gl.BufferSubData(BufferTarget.ArrayBuffer, new IntPtr(byteOffset + offset * size), (uint)dataSize, array);
Gl.BindBuffer(BufferTarget.ArrayBuffer, 0);
}
/// <summary>
/// Upload partial data to the buffer.
/// </summary>
/// <param name="data">The data to upload.</param>
/// <param name="size">The data's size in bytes.</param>
/// <param name="offset">The offset to upload to.</param>
public void UploadPartial(IntPtr data, uint size, uint offset = 0)
{
var offsetPtr = (IntPtr)offset;
if (Engine.Renderer.Dsa)
{
Gl.NamedBufferSubData(Pointer, offsetPtr, size, data);
}
else
{
EnsureBound(Pointer, Type);
Gl.BufferSubData(Type, offsetPtr, size, data);
}
}
public void CreateString(VAO <Vector3, Vector2> vao, string text, Vector3 color, BMFont.Justification justification = BMFont.Justification.Left, float scale = 1f)
{
if (vao == null || (int)vao.vaoID == 0)
{
return;
}
if (vao.VertexCount != text.Length * 6)
{
throw new InvalidOperationException("Text length did not match the length of the current vertex array object.");
}
this.CreateStringInternal(text, color, justification, scale);
Gl.BufferSubData <Vector3>(vao.vbos[0].vboID, BufferTarget.ArrayBuffer, BMFont.vertices, text.Length * 4);
Gl.BufferSubData <Vector2>(vao.vbos[1].vboID, BufferTarget.ArrayBuffer, BMFont.uvs, text.Length * 4);
}
public void UpdateUVs(Vector2[] uvs)
{
Gl.BindVertexArray(ID);
Gl.BindBuffer(BufferTarget.ArrayBuffer, uvsID);
GCHandle data_ptr = GCHandle.Alloc(uvs, GCHandleType.Pinned);
try {
Gl.BufferSubData(BufferTarget.ArrayBuffer, IntPtr.Zero, new IntPtr(2 * sizeof(float) * uvs.Length), data_ptr.AddrOfPinnedObject());
} finally {
data_ptr.Free();
}
Gl.BindBuffer(BufferTarget.ArrayBuffer, 0);
Gl.BindVertexArray(0);
}
public void PrepareDrawCall()
{
// Bind OpenGL objects.
Gl.UseProgram(ShaderProgram);
for (int i = 0; i < Renderer.TextureSlotIndex; i++)
{
Gl.ActiveTexture((TextureUnit)(TextureUnit.Texture0 + i));
Gl.BindTexture(TextureTarget.Texture2d, (uint)Renderer.TextureSlots[i]);
}
Gl.BindVertexArray(VertexArray);
Gl.BindBuffer(BufferTarget.ArrayBuffer, VertexBuffer);
// Upload the new vertex buffer data to VRAM.
Gl.BufferSubData(BufferTarget.ArrayBuffer, IntPtr.Zero, (uint)(Renderer.VertexIndex * Marshal.SizeOf <Vertex>()), Renderer.Vertices);
}
/// <inheritdoc />
public override void MapIndexBuffer(IntPtr data, uint size, uint offset = 0)
{
if (BoundIndexBuffer == 0)
{
Engine.Log.Warning("You are trying to map data, but no index buffer is bound.", MessageSource.GL);
}
IntPtr offsetPtr = (IntPtr)offset;
GLThread.ExecuteGLThread(() =>
{
Gl.BufferSubData(BufferTarget.ElementArrayBuffer, offsetPtr, size, data);
CheckError("after uploading index buffer data from pointer");
});
}
/// <summary>
/// Invalidate a range of the content of this Buffer.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> that created this Buffer.
/// </param>
public void Invalidate(GraphicsContext ctx, IntPtr offset, uint length)
{
if (ctx.Extensions.InvalidateSubdata_ARB || ctx.Version.IsCompatible(Gl.Version_430))
{
Gl.InvalidateBufferSubData(ObjectName, offset, length);
}
else
{
if (!Immutable && RequiresName(ctx))
{
ctx.Bind(this);
Gl.BufferSubData(Target, offset, length, IntPtr.Zero);
}
}
Gl.CheckErrors();
}
/// <summary>
/// Creates a string over top of an old string VAO of the same length.
/// Does not overwrite the indices, since those should be consistent
/// across VAOs of the same length when describing text.
/// </summary>
/// <param name="vao">The current vao object.</param>
/// <param name="text">The text to use when overwriting the old VAO.</param>
/// <param name="color">The color of the text.</param>
/// <param name="justification">The justification of the text.</param>
/// <param name="scale">The scaling of the text.</param>
public void CreateString(VAO <Vector3, Vector2> vao, string text, Vector3 color, Justification justification = Justification.Left, float scale = 1f)
{
if (vao == null || vao.vaoID == 0)
{
return;
}
if (vao.VertexCount != text.Length * 6)
{
throw new InvalidOperationException("Text length did not match the length of the current vertex array object.");
}
CreateStringInternal(text, color, justification, scale);
// simply update the underlying VBOs (indices shouldn't be modified)
Gl.BufferSubData(vao.vbos[0].vboID, BufferTarget.ArrayBuffer, vertices, text.Length * 4);
Gl.BufferSubData(vao.vbos[1].vboID, BufferTarget.ArrayBuffer, uvs, text.Length * 4);
}
/// <inheritdoc cref="UploadPartial(IntPtr, uint, uint)"/>
public void UploadPartial <T>(T[] data, uint offset = 0)
{
// Finish mapping - if it was.
FinishMapping();
int byteSize = Marshal.SizeOf(data[0]);
var offsetPtr = (IntPtr)offset;
var partSize = (uint)(data.Length * byteSize);
if (offset > Size || offset + partSize > Size)
{
Engine.Log.Warning("Tried to map buffer out of range.", MessageSource.GL);
Debug.Assert(false);
return;
}
EnsureBound(Pointer, Type);
Gl.BufferSubData(Type, offsetPtr, partSize, data);
}
public void updateGlBuffers()
{
{
GCHandle handle = GCHandle.Alloc(positions_, GCHandleType.Pinned);
IntPtr pointer = handle.AddrOfPinnedObject();
Gl.BindBuffer(BufferTarget.ArrayBuffer, positionsId_);
Gl.BufferSubData(BufferTarget.ArrayBuffer, (IntPtr)0, (IntPtr)(numVertices_ * Marshal.SizeOf(typeof(Neutrino._math.vec3))), pointer);
handle.Free();
}
{
GCHandle handle = GCHandle.Alloc(colors_, GCHandleType.Pinned);
IntPtr pointer = handle.AddrOfPinnedObject();
Gl.BindBuffer(BufferTarget.ArrayBuffer, colorsId_);
Gl.BufferSubData(BufferTarget.ArrayBuffer, (IntPtr)0, (IntPtr)(numVertices_ * Marshal.SizeOf(typeof(uint))), pointer);
handle.Free();
}
for (uint texIndex = 0; texIndex < texChannels_.Length; ++texIndex)
{
TexChannel texChannel = texChannels_[texIndex];
GCHandle handle = GCHandle.Alloc(texChannel.data_, GCHandleType.Pinned);
IntPtr pointer = handle.AddrOfPinnedObject();
Gl.BindBuffer(BufferTarget.ArrayBuffer, texChannel.id_);
Gl.BufferSubData(BufferTarget.ArrayBuffer, (IntPtr)0,
(IntPtr)(numVertices_ * texChannel.dimensions_ * Marshal.SizeOf(typeof(float))), pointer);
handle.Free();
}
}
/// <summary>
/// Reset the allocated GPU buffer for this Buffer.
/// </summary>
/// <param name="ctx">
///
/// </param>
/// <param name="size">
/// A <see cref="UInt32"/> that determine the size of the buffer object GPU buffer, in bytes.
/// </param>
/// <param name="data">
///
/// </param>
protected void CreateGpuBuffer(GraphicsContext ctx, uint size, IntPtr data)
{
if (Immutable && _GpuBufferSize > 0)
{
throw new InvalidOperationException("buffer is immutable");
}
if (Immutable && ctx.Extensions.BufferStorage_ARB)
{
Gl.BufferStorage(Target, size, data, (uint)_UsageMask);
Gl.CheckErrors();
}
else
{
Gl.BufferData(Target, size, data, Hint);
if (CpuBufferAddress != IntPtr.Zero)
{
Gl.BufferSubData(Target, IntPtr.Zero, _GpuBufferSize, CpuBufferAddress);
}
}
// Store GPU buffer size
_GpuBufferSize = size;
}
/// <summary>
/// Update the reference Buffer, using this technique.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for allocating resources.
/// </param>
public override void Create(GraphicsContext ctx)
{
Gl.BufferSubData(Buffer.Target, new IntPtr(_BufferOffset), (uint)_Array.Length, _Array);
}
/// <summary>
/// Flush all the entities that has not been flushed
/// </summary>
private void Flush()
{
renderableComponents = EntityManager.Instance.GetEntitiesComponent <Renderable>();
if (renderableComponents.Length == 0)
{
return;
}
for (int i = 0; i < renderableComponents.Length; i++)
{
if (renderableComponents[i].IsSubmitted)
{
continue;
}
renderableComponents[i].BufferOffset = lastEntityOffset;
List <float> vertexData = new List <float>();
for (int j = 0; j < renderableComponents[i].Vertices.Length; j++)
{
// XY
vertexData.Add(renderableComponents[i].Vertices[j].X);
vertexData.Add(renderableComponents[i].Vertices[j].Y);
// RGBA
vertexData.Add(renderableComponents[i].Colors[j].R);
vertexData.Add(renderableComponents[i].Colors[j].G);
vertexData.Add(renderableComponents[i].Colors[j].B);
vertexData.Add(renderableComponents[i].Colors[j].A);
int currentQuad = j / 4;
// Tx Ty
if (renderableComponents[i].TextureOffsets != null)
{
vertexData.Add(renderableComponents[i].TextureOffsets[currentQuad, j % 4].X);
vertexData.Add(renderableComponents[i].TextureOffsets[currentQuad, j % 4].Y);
}
else
{
vertexData.Add(0);
vertexData.Add(0);
}
// Texture id
if (renderableComponents[i].Texture == null || renderableComponents[i].TextureOffsets[currentQuad, j % 4].X == -1)
{
vertexData.Add(1024);
}
else
{
vertexData.Add(renderableComponents[i].Texture.Id);
}
}
// Add data to vbo
vbo.Bind();
Gl.BufferSubData(BufferTarget.ArrayBuffer, (IntPtr)lastEntityOffset, (uint)(renderableComponents[i].Vertices.Length * vbo.VertexSize), vertexData.ToArray());
vbo.Unbind();
Debug.Log("Flushed 1 Entity with " + renderableComponents[i].Vertices.Length.ToString() + " Vertices at bufferLayout " + lastEntityOffset, Debug.DebugLayer.Render, Debug.DebugLevel.Information);
renderableComponents[i].IsSubmitted = true;
lastEntityOffset += (uint)(renderableComponents[i].Vertices.Length * vbo.VertexSize);
}
}
internal void UpdateData()
{
if (renderableComponents.Length == 0)
{
return;
}
for (int i = 0; i < renderableComponents.Length; i++)
{
Renderable curRend = renderableComponents[i];
if (!curRend.HasChanged)
{
continue;
}
List <float> vertexData = new List <float>();
for (int j = 0; j < renderableComponents[i].Vertices.Length; j++)
{
// XY
vertexData.Add(curRend.Vertices[j].X);
vertexData.Add(curRend.Vertices[j].Y);
// RGBA
vertexData.Add(curRend.Colors[j].R);
vertexData.Add(curRend.Colors[j].G);
vertexData.Add(curRend.Colors[j].B);
vertexData.Add(curRend.Colors[j].A);
int currentQuad = j / 4;
// Tx Ty
if (curRend.TextureOffsets != null)
{
vertexData.Add(curRend.TextureOffsets[currentQuad, j % 4].X);
vertexData.Add(curRend.TextureOffsets[currentQuad, j % 4].Y);
}
else
{
vertexData.Add(0);
vertexData.Add(0);
}
// Texture id
if (curRend.Texture == null || curRend.TextureOffsets[currentQuad, j % 4].X == -1)
{
vertexData.Add(1024);
}
else
{
vertexData.Add(curRend.Texture.Id);
}
}
vbo.Bind();
Gl.BufferSubData(BufferTarget.ArrayBuffer, (IntPtr)curRend.BufferOffset, (uint)(curRend.Vertices.Length * vbo.VertexSize), vertexData.ToArray());
vbo.Unbind();
curRend.HasChanged = false;
}
}
/// <summary>
/// Actually create this BufferObject resources.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for allocating resources.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="ctx"/> is null.
/// </exception>
/// <exception cref="ArgumentException">
/// Exception thrown if <paramref name="ctx"/> is not current on the calling thread.
/// </exception>
/// <exception cref="InvalidOperationException">
/// Exception thrown if this BufferObject has not client memory allocated and the hint is different from
/// <see cref="BufferObjectHint.StaticCpuDraw"/> or <see cref="BufferObjectHint.DynamicCpuDraw"/>.
/// </exception>
/// <exception cref="InvalidOperationException">
/// Exception thrown if this BufferObject is currently mapped.
/// </exception>
protected override void CreateObject(GraphicsContext ctx)
{
CheckCurrentContext(ctx);
if ((ClientBufferAddress == IntPtr.Zero) && ((Hint != BufferObjectHint.StaticCpuDraw) && (Hint != BufferObjectHint.DynamicCpuDraw)))
{
throw new InvalidOperationException("no client buffer");
}
// Determine the client buffer size
uint clientBufferSize = _ClientBufferSize;
if (ClientBufferAddress != IntPtr.Zero)
{
clientBufferSize = ClientBufferSize;
}
Debug.Assert(clientBufferSize > 0);
// Buffer must be bound
ctx.Bind(this, true);
if (ctx.Extensions.VertexBufferObject_ARB)
{
if (IsMapped)
{
throw new InvalidOperationException("mapped");
}
// Define buffer object (type, size and hints)
AllocateGpuBuffer(clientBufferSize, null);
// Define buffer object contents
if (ClientBufferAddress != IntPtr.Zero)
{
// Provide buffer contents
Gl.BufferSubData(BufferType, IntPtr.Zero, _GpuBufferSize, ClientBufferAddress);
// Release memory, if it is not required anymore
if (_MemoryBufferAutoDispose)
{
ReleaseClientBuffer();
}
}
}
else
{
// Discard previous GPU buffer, if any
if (_GpuBuffer != null)
{
_GpuBuffer.Dispose();
}
if (ClientBufferAddress == IntPtr.Zero)
{
// Note: GPU buffer size specified by _ClientBufferSize
Debug.Assert(_ClientBufferSize > 0);
// Allocate simulated GPU buffer
_GpuBuffer = new AlignedMemoryBuffer(_ClientBufferSize, MinimumBufferAlignment);
}
else
{
// Let a virtual implementation decide how pass information from the client buffer and the "GPU" buffer
UploadClientBuffer();
}
// Store GPU buffer size
_GpuBufferSize = _GpuBuffer.Size;
}
// Reset requested client buffer size
_ClientBufferSize = 0;
}
public void ReplaceData(IntPtr data, uint size, IntPtr offset)
{
Gl.BufferSubData(BufferTarget.ElementArrayBuffer, offset, size, data);
}
public void SubData(uint offset, uint size, IntPtr data) => Gl.BufferSubData(BufferTarget, new IntPtr(offset), size, data);
