/// <summary>
/// 2D Arrays or 3D from the bound read framebuffer (from sx/sy) into this texture at x/y -2D Array or 3D
/// See <href>https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/glCopyTexSubImage3D.xhtml</href>
/// </summary>
/// <param name="miplevel">Mip Level to store data into</param>
/// <param name="xoffset">Left offset to store in the texture</param>
/// <param name="yoffset">Bottom offset to store in the texture</param>
/// <param name="zoffset">Depth offset to store in the texture</param>
/// <param name="x">Left corner to copy</param>
/// <param name="y">Bottom corner to copy</param>
/// <param name="width">Width to copy</param>
/// <param name="height">Height to copy</param>
public void CopyFromReadFrameBuffer2da3d(int miplevel, int xoffset, int yoffset, int zoffset, int x, int y, int width, int height)
{
System.Diagnostics.Debug.Assert(this is GLTexture2DArray || this is GLTexture3D);
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect");
GL.CopyTextureSubImage3D(Id, miplevel, xoffset, yoffset, zoffset, x, y, width, height);
GLStatics.Check();
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="name">Name of bitmap collection</param>
/// <param name="rlist">Render list to draw into</param>
/// <param name="bitmapsize">Bit map size</param>
/// <param name="mipmaplevels">Mip map levels</param>
/// <param name="textureformat">Texture format of bitmaps</param>
/// <param name="cullface">True to cull face</param>
/// <param name="depthtest">True to depth test</param>
/// <param name="maxpergroup">Maximum number of bitmaps per group</param>
/// <param name="yfixed">Set true to fix Y co-ord externally</param>
public GLBitmaps(string name, GLRenderProgramSortedList rlist, Size bitmapsize, int mipmaplevels = 3,
OpenTK.Graphics.OpenGL4.SizedInternalFormat textureformat = OpenTK.Graphics.OpenGL4.SizedInternalFormat.Rgba8,
bool cullface = true, bool depthtest = true, int maxpergroup = int.MaxValue, bool yfixed = false)
{
this.name = name;
this.context = GLStatics.GetContext();
int maxdepthpertexture = GL4Statics.GetMaxTextureDepth(); // limits the number of textures per 2darray
int max = Math.Min(maxdepthpertexture, maxpergroup); //note RI uses a VertexArray to load the matrix in, so not limited by that (max size of uniform buffer)
matrixbuffers = new GLSetOfMatrixBufferWithGenerations(items, max);
matrixbuffers.AddedNewGroup += AddedNewGroup; // hook up call back to say i've made a group
renderlist = rlist;
this.bitmapsize = bitmapsize;
shader = new GLShaderPipeline(new GLPLVertexShaderMatrixQuadTexture(yfixed), new GLPLFragmentShaderTexture2DIndexed(0, alphablend: true));
items.Add(shader);
renderstate = GLRenderState.Quads();
renderstate.CullFace = cullface;
renderstate.DepthTest = depthtest;
renderstate.ClipDistanceEnable = 1; // we are going to cull primitives which are deleted
texmipmaplevels = mipmaplevels;
this.textureformat = textureformat;
}
/// <summary>
/// 1D Textures from the bound read framebuffer (from x/y) into this texture at xoffset
/// See <href>https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/glCopyTexSubImage2D.xhtml</href>
/// </summary>
/// <param name="miplevel">Mip Level to store data into</param>
/// <param name="xoffset">Left offset to store in the texture</param>
/// <param name="x">Left corner to copy</param>
/// <param name="y">Bottom corner to copy</param>
/// <param name="width">Width to copy</param>
public void CopyFromReadFrameBuffer1d(int miplevel, int xoffset, int x, int y, int width)
{
System.Diagnostics.Debug.Assert(this is GLTexture1D);
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect");
GL.CopyTextureSubImage1D(Id, miplevel, xoffset, x, y, width);
GLStatics.Check();
}
/// <summary>Zero the buffer from this position and length</summary>
public void Zero(int pos, int length)
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect"); // safety
System.Diagnostics.Debug.Assert(Length != 0 && pos >= 0 && length <= Length && pos + length <= Length);
GL.ClearNamedBufferSubData(Id, PixelInternalFormat.R32ui, (IntPtr)pos, length, PixelFormat.RedInteger, PixelType.UnsignedInt, (IntPtr)0);
GLStatics.Check();
}
/// <summary>
/// Set the sampler mode (GL_CLAMP_TO_EDGE, GL_CLAMP_TO_BORDER, GL_MIRRORED_REPEAT, GL_REPEAT, or GL_MIRROR_CLAMP_TO_EDGE) (Use OpenTK names)
/// </summary>
/// <param name="s">Texture wrap width</param>
public void SetSamplerMode(TextureWrapMode s)
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect");
int st = (int)s;
GL.TextureParameterI(Id, TextureParameterName.TextureWrapS, ref st);
}
/// <summary>
/// Fill vertex buffer with vector4's, and write an indirect to indirectbuffer N
/// </summary>
/// <param name="vertices">Array of vertices to store</param>
/// <param name="sourceoffset">Start position in array</param>
/// <param name="sourcelength">Length of store</param>
/// <param name="indirectbuffer">Which indirect buffer to store indexes into</param>
/// <param name="vertexcount">If greater or equal to zero, use this count for indirects, else user source length</param>
/// <param name="vertexbaseindex">Vertex base index for indirect</param>
/// <param name="ic">Instance count for indirect</param>
/// <param name="baseinstance">If greater or equal to zero, use this, else estimate the base instance number based on vertex position. </param>
/// <returns>True if filled</returns>
public bool Fill(Vector4[] vertices, int sourceoffset, int sourcelength,
int indirectbuffer,
int vertexcount = -1,
int vertexbaseindex = 0,
int ic = 1,
int baseinstance = -1) // baseinstance, <0 use CurrentPos on vertex buffer to estimate instance number, else use this
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect");
CreateIndirect(indirectbuffer);
if (EnoughSpaceVertex(sourcelength, indirectbuffer))
{
Vertex.Fill(vertices, sourceoffset, sourcelength); // creates a position
//Vertex.Fill(vertices); // creates a position
// System.Diagnostics.Debug.WriteLine($"Vertex buf {Vertex.Positions.Last()} size {vertices.Length * GLBuffer.Vec4size}");
vertexcount = vertexcount >= 0 ? vertexcount : sourcelength;
baseinstance = baseinstance >= 0 ? baseinstance : (Vertex.Positions.Last() / GLBuffer.Vec4size);
int pos = Indirects[indirectbuffer].Positions.Count * GLBuffer.WriteIndirectArrayStride;
Indirects[indirectbuffer].AddPosition(pos);
Indirects[indirectbuffer].StartWrite(pos, GLBuffer.WriteIndirectArrayStride);
Indirects[indirectbuffer].WriteIndirectArray(vertexcount, ic, vertexbaseindex, baseinstance);
Indirects[indirectbuffer].StopReadWrite();
return(true);
}
else
{
return(false);
}
}
/// <summary> Stop a read or write sequence, release buffer back to use </summary>
public void StopReadWrite()
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect"); // safety
GL.UnmapNamedBuffer(Id);
mapmode = MapMode.None;
GLStatics.Check();
}
/// <summary>
/// Add a bitmap to the collection.
/// </summary>
/// <param name="tag">Tag for this bitmap, may be null</param>
/// <param name="bmp">Bitmap</param>
/// <param name="bmpmipmaplevels">The bitmap mip map levels</param>
/// <param name="worldpos">Position of bitmap in world</param>
/// <param name="size">Size to draw bitmap in world.</param>
/// <param name="rotationradians">Rotation of bitmap (ignored if rotates below are on)</param>
/// <param name="rotatetoviewer">True to rotate to viewer in azimuth</param>
/// <param name="rotateelevation">True to rotate to viewer in elevation</param>
/// <param name="alphafadescalar">Alpha Fade scalar on distance</param>
/// <param name="alphafadepos">Alpha fade distance. Negative for fade in, positive for fade out </param>
/// <param name="ownbitmap"></param>
/// <param name="visible">True if visible on start</param>
/// <returns></returns>
// add a bitmap, indicate if owned by class or you. Gives back group no, position in group, total in group
public virtual Tuple <int, int, int> Add(object tag,
Bitmap bmp,
int bmpmipmaplevels,
Vector3 worldpos,
Vector3 size,
Vector3 rotationradians,
bool rotatetoviewer = false, bool rotateelevation = false,
float alphafadescalar = 0,
float alphafadepos = 0,
bool ownbitmap = false,
bool visible = true
)
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Bitmaps detected context incorrect");
Matrix4 mat = GLPLVertexShaderMatrixQuadTexture.CreateMatrix(worldpos, size, rotationradians, rotatetoviewer, rotateelevation, alphafadescalar, alphafadepos, 0, visible);
var gpc = matrixbuffers.Add(tag, ownbitmap ? bmp : null, mat); // group, pos, total in group
// System.Diagnostics.Debug.WriteLine("Make bitmap {0} {1} {2} at {3}", gpc.Item1, gpc.Item2, gpc.Item3 , worldpos);
grouptextureslist[gpc.Item1].LoadBitmap(bmp, gpc.Item2, false, bmpmipmaplevels); // texture does not own them, we may do
grouprenderlist[gpc.Item1].InstanceCount = gpc.Item3; // update instance count to items in group
return(gpc);
}
///<summary>Create an empty buffer of this standard, default is std130. Standard defines the layout of members of the buffer. See OpenGL</summary>
public GLBuffer(bool std430 = false) : base(std430)
{
GL.CreateBuffers(1, out int id); // this actually makes the buffer, GenBuffer does not - just gets a name
GLStatics.RegisterAllocation(typeof(GLBuffer));
GLStatics.Check();
Id = id;
context = GLStatics.GetContext();
}
/// <summary> Set Min Mag filter to linear </summary>
public void SetMinMagLinear()
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect");
var textureFilter = (int)All.Linear;
GL.TextureParameterI(Id, TextureParameterName.TextureMinFilter, ref textureFilter);
GL.TextureParameterI(Id, TextureParameterName.TextureMagFilter, ref textureFilter);
}
/// <summary>
/// Copy to another buffer. Other buffer must be Allocated to the size otherpos+length
/// </summary>
/// <param name="other">Other buffer</param>
/// <param name="startpos">Start posiiton in buffer</param>
/// <param name="otherpos">Position to store it in other buffer</param>
/// <param name="length">Copy length</param>
/// <param name="hint"></param>
public void CopyTo(GLBuffer other, int startpos, int otherpos, int length, BufferUsageHint hint = BufferUsageHint.StaticDraw) // newlength can be zero, meaning discard and go back to start
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect"); // safety
int ourend = startpos + length;
int otherend = otherpos + length;
System.Diagnostics.Debug.Assert(Length >= ourend && other.Length >= otherend);
GL.CopyNamedBufferSubData(Id, other.Id, (IntPtr)startpos, (IntPtr)otherpos, length);
}
/// <summary>
/// Construct a control display
/// </summary>
/// <param name="items">Items to store GL data to</param>
/// <param name="win">GLWindowControl to hook to</param>
/// <param name="mc">Matrix Calc to use</param>
/// <param name="depthtest">Enable depth test</param>
/// <param name="startz">Start Z for nearest top level window</param>
/// <param name="deltaz">Delta Z between each top level window</param>
/// <param name="arbbufferid">ARB buffer to use for texture bindless storage</param>
public GLControlDisplay(GLItemsList items, GLWindowControl win, GLMatrixCalc mc,
bool depthtest = true, // do depth testing or not
float startz = 0.001f, // z for the deepest window (only will apply if depth testing
float deltaz = 0.001f, // delta betwwen them
int arbbufferid = 10
) : base("displaycontrol", new Rectangle(0, 0, mc.ScreenCoordMax.Width, mc.ScreenCoordMax.Height))
{
glwin = win;
MatrixCalc = mc;
context = GLStatics.GetContext();
this.items = items;
vertexes = items.NewBuffer();
vertexarray = items.NewVertexArray();
vertexes.Bind(vertexarray, 0, 0, vertexesperentry * sizeof(float)); // bind to 0, from 0, 2xfloats. Must bind after vertexarray is made as its bound during construction
vertexarray.Attribute(0, 0, vertexesperentry, OpenTK.Graphics.OpenGL4.VertexAttribType.Float); // bind 0 on attr 0, 2 components per vertex
GLRenderState rc = GLRenderState.Tri();
rc.PrimitiveRestart = 0xff;
rc.DepthTest = depthtest;
this.startz = startz;
this.deltaz = deltaz;
ri = new GLRenderableItem(PrimitiveType.TriangleStrip, rc, 0, vertexarray); // create a renderable item
ri.CreateRectangleElementIndexByte(items.NewBuffer(), 255 / 5); // note this limits top level controls number to 255/5.
ri.DrawCount = 0; // nothing to draw at this point
shader = new GLShaderPipeline(new GLPLVertexShaderScreenTexture(), new GLPLFragmentShaderBindlessTexture(arbbufferid, true, discardiftransparent: true));
items.Add(shader);
textures = new Dictionary <GLBaseControl, GLTexture2D>();
size = new Dictionary <GLBaseControl, Size>();
visible = new Dictionary <GLBaseControl, bool>();
texturebinds = items.NewBindlessTextureHandleBlock(arbbufferid);
glwin.MouseMove += Gc_MouseMove;
glwin.MouseClick += Gc_MouseClick;
glwin.MouseDoubleClick += Gc_MouseDoubleClick;
glwin.MouseDown += Gc_MouseDown;
glwin.MouseUp += Gc_MouseUp;
glwin.MouseEnter += Gc_MouseEnter;
glwin.MouseLeave += Gc_MouseLeave;
glwin.MouseWheel += Gc_MouseWheel;
glwin.KeyDown += Gc_KeyDown;
glwin.KeyUp += Gc_KeyUp;
glwin.KeyPress += Gc_KeyPress;
glwin.Resize += Gc_Resize;
glwin.Paint += Gc_Paint;
suspendLayoutCount = 0;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="items">Item list to store buffers into</param>
/// <param name="vertsize">Size of vertex buffer</param>
/// <param name="indirectsize">Size of indirect buffer</param>
/// <param name="std430">Std430 layout</param>
/// <param name="bufferusagehint">Buffer usage hint</param>
public GLVertexBufferIndirect(GLItemsList items, int vertsize, int indirectsize, bool std430 = false, BufferUsageHint bufferusagehint = BufferUsageHint.StaticDraw)
{
this.items = items;
this.indirectsize = indirectsize;
this.bufferusage = bufferusagehint;
this.context = GLStatics.GetContext();
Vertex = new GLBuffer(vertsize, std430, bufferusagehint);
items.Add(Vertex);
}
/// <summary>
/// Set Min Mag filter on texture
/// </summary>
/// <param name="minfilter">Min filter (default LinearMipmapLinear)</param>
/// <param name="maxfilter">Max filter (default Linear)</param>
public void SetMinMagFilter(All minfilter = All.LinearMipmapLinear, All maxfilter = All.Linear)
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect");
var textureMinFilter = (int)minfilter;
GL.TextureParameterI(Id, TextureParameterName.TextureMinFilter, ref textureMinFilter);
var textureMagFilter = (int)maxfilter;
GL.TextureParameterI(Id, TextureParameterName.TextureMagFilter, ref textureMagFilter);
}
/// <summary>Call to ensure this texture has an ARB texture ID</summary>
public long AcquireArbId()
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect");
if (arbid == -1)
{
arbid = OpenTK.Graphics.OpenGL.GL.Arb.GetTextureHandle(Id);
OpenTK.Graphics.OpenGL.GL.Arb.MakeTextureHandleResident(arbid); // can't do this twice!
}
return(arbid);
}
/// <summary>Bind buffer to vertext array at this bindingindex, with the start position stride and divisor</summary>
public void Bind(GLVertexArray va, int bindingindex, int start, int stride, int divisor = 0) // set buffer binding to a VA
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect"); // safety
System.Diagnostics.Debug.Assert(mapmode == MapMode.None); // catch unmap missing. Since binding to VA can be done before buffer is full, then don't check BufferSize
va.Bind();
GL.BindVertexBuffer(bindingindex, Id, (IntPtr)start, stride); // this buffer to binding index
GL.VertexBindingDivisor(bindingindex, divisor);
GLStatics.Check();
//System.Diagnostics.Debug.WriteLine("BUFBIND " + bindingindex + " To B" + Id + " pos " + start + " stride " + stride + " divisor " + divisor);
}
/// <summary>
/// From any type of ImageTarget into this - All types
/// See <href>https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/glCopyImageSubData.xhtml</href>
/// </summary>
/// <param name="srcid">Texture or Renderbuffer source</param>
/// <param name="srcTarget">Source image type</param>
/// <param name="srcmiplevel">Mipmap level to copy from</param>
/// <param name="sx">Source X</param>
/// <param name="sy">Source Y</param>
/// <param name="sz">Source Z level</param>
/// <param name="dmiplevel">Destination mip level</param>
/// <param name="dx">Destination X</param>
/// <param name="dy">Destination Y</param>
/// <param name="dz">Destination Z (0 for 2D/1D</param>
/// <param name="width">Destination Width</param>
/// <param name="height">Destination Height</param>
public void CopyFrom(int srcid, ImageTarget srcTarget, int srcmiplevel, int sx, int sy, int sz, int dmiplevel, int dx, int dy, int dz, int width, int height)
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect");
// not sure, according to spec, the dest target may just need to be a texture type..
ImageTarget it = this is GLTexture2D ? ImageTarget.Texture2D : this is GLTexture2DArray ? ImageTarget.Texture2DArray : this is GLTexture1D ? ImageTarget.Texture1D : ImageTarget.Texture3D;
GL.CopyImageSubData(srcid, srcTarget, srcmiplevel, sx, sy, sz,
Id, it, dmiplevel, dx, dy, dz, width, height, 1);
GLStatics.Check();
}
/// <summary>Bind buffer to parameter binding point</summary>
public void BindParameter()
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect"); // safety
System.Diagnostics.Debug.Assert(mapmode == MapMode.None && Length > 0); // catch unmap missing or nothing in buffer
// if (parameterbindindex != Id) // removed for testing
{
GL.BindBuffer((BufferTarget)0x80ee, Id); // fudge due to ID not being there in 3.3.2
GLStatics.Check();
parameterbindindex = Id;
}
}
///<summary> Bind to query buffer</summary>
public void BindQuery()
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect"); // safety
System.Diagnostics.Debug.Assert(mapmode == MapMode.None && Length > 0); // catch unmap missing or nothing in buffer
if (querybindindex != Id)
{
GL.BindBuffer(BufferTarget.QueryBuffer, Id);
GLStatics.Check();
querybindindex = Id;
}
}
/// <summary>Bind buffer to indirect binding point</summary>
public void BindIndirect()
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect"); // safety
System.Diagnostics.Debug.Assert(mapmode == MapMode.None && Length > 0); // catch unmap missing or nothing in buffer
//if (indirectbindindex != Id) // removed for testing
{
GL.BindBuffer(BufferTarget.DrawIndirectBuffer, Id);
GLStatics.Check();
indirectbindindex = Id;
}
}
///<summary>Allocate or reallocate buffer size. Call first to set buffer size. Allow for alignment in your size</summary>
public void AllocateBytes(int bytessize, BufferUsageHint hint = BufferUsageHint.StaticDraw)
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect"); // safety
if (bytessize > 0) // can call twice - get fresh buffer each time
{
Length = bytessize;
GL.NamedBufferData(Id, Length, (IntPtr)0, hint); // set buffer size
var err = GL.GetError();
System.Diagnostics.Debug.Assert(err == ErrorCode.NoError, $"GL NamedBuffer error {err}"); // check for any errors, always.
ResetPositions();
}
}
/// <summary>
/// Clear part of an image
/// See <href>https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/glClearTexSubImage.xhtml</href>
/// </summary>
/// <param name="level">Level to clear</param>
/// <param name="x">Left edge</param>
/// <param name="y">Lower edge</param>
/// <param name="z">Front of region</param>
/// <param name="width">Width to clear</param>
/// <param name="height">Height to clear</param>
/// <param name="depth">Depth to clear</param>
/// <param name="red">Red value, 0-1</param>
/// <param name="green">Green value, 0-1</param>
/// <param name="blue">Blue value, 0-1</param>
/// <param name="alpha">Alpha value, 0-1</param>
public void ClearSubImage(int level, int x, int y, int z, int width, int height, int depth, float red, float green, float blue, float alpha)
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect");
int size = Marshal.SizeOf <float>() * 4;
IntPtr pnt = Marshal.AllocHGlobal(size);
float[] a = new float[] { red, green, blue, alpha };
Marshal.Copy(a, 0, pnt, a.Length);
GL.ClearTexSubImage(Id, level, x, y, z, width, height, depth, PixelFormat.Rgba, PixelType.Float, pnt);
Marshal.FreeHGlobal(pnt);
GLStatics.Check();
}
/// <summary>
/// Clear image to this color
/// </summary>
/// <param name="level">Level to clear</param>
/// <param name="red">Red value, 0-1</param>
/// <param name="green">Green value, 0-1</param>
/// <param name="blue">Blue value, 0-1</param>
/// <param name="alpha">Alpha value, 0-1</param>
public void ClearImage(int level, float red, float green, float blue, float alpha) // confirmed
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect");
int size = Marshal.SizeOf <float>() * 4;
IntPtr pnt = Marshal.AllocHGlobal(size);
float[] a = new float[] { red, green, blue, alpha };
Marshal.Copy(a, 0, pnt, a.Length);
GL.ClearTexImage(Id, level, PixelFormat.Rgba, PixelType.Float, pnt);
Marshal.FreeHGlobal(pnt);
GLStatics.Check();
}
/// <summary>
/// Bind buffer to the specific transform feedback buffer object at binding index
/// See <href>https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/glTransformFeedbackBufferBase.xhtml</href>
/// </summary>
/// <param name="bindingindex">Index of binding point within xfb</param>
/// <param name="xfb">Name of the transformation feeback buffer object. 0 means default transform</param>
/// <param name="offset">Offset into buffer if size != -1</param>
/// <param name="size">Buffer area allocated. If size == -1, all of buffer</param>
public void BindTransformFeedback(int bindingindex, int xfb = 0, int offset = 0, int size = -1)
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect"); // safety
System.Diagnostics.Debug.Assert(mapmode == MapMode.None && Length > 0); // catch unmap missing or nothing in buffer
if (size == -1)
{
GL.TransformFeedbackBufferBase(xfb, bindingindex, Id);
}
else
{
GL.TransformFeedbackBufferRange(xfb, bindingindex, Id, (IntPtr)offset, size);
}
GLStatics.Check();
}
///<summary> Begin a write. Select position and size. (datasize=0=all buffer).
/// Buffer access mask decides what to keep about the range, default is to wipe the mapped area. Use 0 in bam not to do this. Trap for young players here</summary>
public void StartWrite(int fillpos, int datasize = 0, BufferAccessMask bufferaccessmask = BufferAccessMask.MapInvalidateRangeBit)
{
if (datasize == 0)
{
datasize = Length - fillpos;
}
System.Diagnostics.Debug.Assert(mapmode == MapMode.None && fillpos >= 0 && fillpos + datasize <= Length); // catch double maps
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect"); // safety
CurrentPtr = GL.MapNamedBufferRange(Id, (IntPtr)fillpos, datasize, BufferAccessMask.MapWriteBit | bufferaccessmask);
CurrentPos = fillpos;
mapmode = MapMode.Write;
GLStatics.Check();
}
/// <summary>
/// Start read on definable area
/// </summary>
public void StartRead(int fillpos, int datasize = 0) // read the buffer (datasize=0=all buffer)
{
if (datasize == 0)
{
datasize = Length - fillpos;
}
System.Diagnostics.Debug.Assert(mapmode == MapMode.None && fillpos >= 0 && fillpos + datasize <= Length); // catch double maps
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect"); // safety
CurrentPtr = GL.MapNamedBufferRange(Id, (IntPtr)fillpos, datasize, BufferAccessMask.MapReadBit);
CurrentPos = fillpos;
mapmode = MapMode.Read;
GLStatics.Check();
}
/// <summary>
/// Resize the buffer. Note this results in a new GL Buffer, so any VertexArrays will need remaking. Also note the Positions are maintained, you may want to delete those manually.
/// </summary>
public void Resize(int newlength, BufferUsageHint hint = BufferUsageHint.StaticDraw) // newlength can be zero, meaning discard and go back to start
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect"); // safety
if (Length != newlength)
{
GL.CreateBuffers(1, out int newid);
if (newlength > 0)
{
GL.NamedBufferData(newid, newlength, (IntPtr)0, hint); // set buffer size
var err = GL.GetError();
System.Diagnostics.Debug.Assert(err == ErrorCode.NoError, $"GL NamedBuffer error {err}"); // check for any errors, always.
if (Length > 0) // if previous buffer had data
{
GL.CopyNamedBufferSubData(Id, newid, (IntPtr)0, (IntPtr)0, Math.Min(Length, newlength));
}
}
GL.DeleteBuffer(Id); // delete old buffer
Id = newid; // swap to new
Length = newlength;
}
}
/// <summary>Dispose of texture, will free bitmaps if owned</summary>
public void Dispose() // you can double dispose.
{
System.Diagnostics.Debug.Assert(context == GLStatics.GetContext(), "Context incorrect");
if (Id >= 0)
{
if (arbid != -1) // if its been arb'd, de-arb it
{
OpenTK.Graphics.OpenGL.GL.Arb.MakeTextureHandleNonResident(arbid); // can't do this twice!
arbid = -1;
}
GL.DeleteTexture(Id);
GLStatics.RegisterDeallocation(GetType());
Id = -2; // -2 means made, then destroyed
if (BitMaps != null)
{
for (int i = 0; i < BitMaps.Length; i++)
{
if (OwnBitMaps[i] && BitMaps[i] != null) // we may have empty spaces in the bitmap list
{
BitMaps[i].Dispose();
}
}
BitMaps = null;
OwnBitMaps = null;
}
}
else
{
if (Id == -2) // goes -1 -> ID -> -2, never uses stays as -1
{
System.Diagnostics.Trace.WriteLine($"OFC Warning - double disposing of a texture block in {GetType().FullName}"); // only an warning due to the fact you can create and not use
}
}
}
/// <summary>
/// Make a GL Control and attach to control.
/// </summary>
/// <param name="attachcontrol">Control to attach the GL Control to</param>
/// <param name="mode">TK graphics mode</param>
public GLWinFormControl(Control attachcontrol, OpenTK.Graphics.GraphicsMode mode = null)
{
if (mode == null)
{
mode = OpenTK.Graphics.GraphicsMode.Default;
}
glControl = new GLControlKeyOverride(mode);
glControl.MakeCurrent(); // make sure GLControl is current context selected, in case operating with multiples
glControl.Dock = DockStyle.Fill;
glControl.BackColor = System.Drawing.Color.Black;
glControl.Name = "glControl";
glControl.TabIndex = 0;
glControl.VSync = true;
glControl.PreviewKeyDown += Gl_PreviewKeyDown;
attachcontrol.Controls.Add(glControl);
glControl.MouseDown += Gc_MouseDown;
glControl.MouseUp += Gc_MouseUp;
glControl.MouseMove += Gc_MouseMove;
glControl.MouseEnter += Gc_MouseEnter;
glControl.MouseLeave += Gc_MouseLeave;
glControl.MouseClick += Gc_MouseClick;
glControl.MouseDoubleClick += Gc_MouseDoubleClick;
glControl.MouseWheel += Gc_MouseWheel;
glControl.KeyDown += Gc_KeyDown;
glControl.KeyUp += Gc_KeyUp;
glControl.KeyPress += Gc_KeyPress;
glControl.Resize += Gc_Resize;
glControl.Paint += GlControl_Paint;
context = GLStatics.GetContext();
System.Diagnostics.Debug.WriteLine($"GL Context {context} created");
gltime.Start();
}
/// <summary>
/// Creator of this draw set
/// </summary>
/// <param name="textures"> number of 2D textures to allow maximum (limited by GL)</param>
/// <param name="estimateditemspergroup">Estimated objects per group, this adds on vertext buffer space to allow for mat4 alignment. Smaller means more allowance.</param>
/// <param name="mingroups">Minimum groups to have</param>
/// <param name="objectbuffer">Object buffer to use</param>
/// <param name="objectvertexes">Number of object vertexes</param>
/// <param name="objrc">The object render state control</param>
/// <param name="objpt">The object draw primitive type</param>
/// <param name="texturesize">The size of the label</param>
/// <param name="textrc">The text render state</param>
/// <param name="textureformat">The texture format for the text</param>
/// <param name="debuglimittexture">For debug, set this to limit maximum number of entries. 0 = off</param>
/// <returns></returns>
public Tuple <GLRenderableItem, GLRenderableItem> Create(
int textures,
int estimateditemspergroup,
int mingroups,
GLBuffer objectbuffer, int objectvertexes, GLRenderState objrc, PrimitiveType objpt,
Size texturesize, GLRenderState textrc, SizedInternalFormat textureformat,
int debuglimittexture = 0)
{
this.objectvertexescount = objectvertexes;
this.context = GLStatics.GetContext();
// Limit number of 2d textures in a single 2d array
int maxtextper2darray = GL4Statics.GetMaxTextureDepth();
if (debuglimittexture > 0)
{
maxtextper2darray = debuglimittexture;
}
// set up number of textmaps bound
int maxtexturesbound = GL4Statics.GetMaxFragmentTextures();
int textmaps = Math.Min(textures, maxtexturesbound);
// which then give us the number of stars we can do
int objectcount = textmaps * maxtextper2darray;
int groupcount = objectcount / estimateditemspergroup;
groupcount = Math.Max(mingroups, groupcount); // min groups
// System.Diagnostics.Debug.WriteLine($"GLObjectWithLabels oc {objectcount} gc {groupcount}");
// estimate maximum vert buffer needed, allowing for extra due to the need to align the mat4
int vertbufsize = objectcount * (GLBuffer.Vec4size + GLBuffer.Mat4size) + // for a vec4 + mat4 per object
groupcount * GLBuffer.Mat4size; // and for groupcount Mat4 fragmentation per group
// create the vertex indirect buffer
dataindirectbuffer = new GLVertexBufferIndirect(items, vertbufsize, GLBuffer.WriteIndirectArrayStride * groupcount, true, BufferUsageHint.DynamicDraw);
// objects
ObjectRenderer = GLRenderableItem.CreateVector4Vector4(items, objpt, objrc,
objectbuffer, 0, 0, // binding 0 is shapebuf, offset 0, no draw count yet
dataindirectbuffer.Vertex, 0, // binding 1 is vertex's world positions, offset 0
null, 0, 1); // no ic, second divisor 1
ObjectRenderer.BaseIndexOffset = 0; // offset in bytes where commands are stored
ObjectRenderer.MultiDrawCountStride = GLBuffer.WriteIndirectArrayStride;
// text
this.textures = new GLTexture2DArray[textmaps];
for (int i = 0; i < this.textures.Length; i++)
{
int n = Math.Min(objectcount, maxtextper2darray);
this.textures[i] = new GLTexture2DArray(texturesize.Width, texturesize.Height, n, textureformat, 1);
items.Add(this.textures[i]);
objectcount -= maxtextper2darray;
}
TextRenderer = GLRenderableItem.CreateMatrix4(items, PrimitiveType.Quads, textrc,
dataindirectbuffer.Vertex, 0, 0, //attach buffer with matrices, no draw count
new GLRenderDataTexture(this.textures, 0), // binding 0 assign to our texture 2d
0, 1); //no ic, and matrix divide so 1 matrix per vertex set
TextRenderer.BaseIndexOffset = 0; // offset in bytes where commands are stored
TextRenderer.MultiDrawCountStride = GLBuffer.WriteIndirectArrayStride;
return(new Tuple <GLRenderableItem, GLRenderableItem>(ObjectRenderer, TextRenderer));
}