752 lines
25 KiB
C#
752 lines
25 KiB
C#
//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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// file="glFunction.cs"
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// Project: StgSharp
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// AuthorGroup: Nitload Space
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// Copyright (c) Nitload Space. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the “Software”), to deal in the Software without restriction,
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// including without limitation the rights to use, copy, modify, merge,
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// publish, distribute, sublicense, and/or sell copies of the Software,
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// and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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//
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// The above copyright notice and
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// this permission notice shall be included in all copies
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// or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED “AS IS”,
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// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH
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// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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using StgSharp.Graphics;
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using StgSharp.Math;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Runtime.CompilerServices;
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using System.Runtime.ExceptionServices;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace StgSharp
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{
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internal static unsafe partial class InternalIO
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{
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[DllImport(SSC_libName, EntryPoint = "glCheckShaderStat",
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CallingConvention = CallingConvention.Cdecl)]
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#pragma warning disable CA5392
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internal static extern int glCheckShaderStatus(ref OpenglContext context, uint shaderHandle, int key, ref IntPtr logPtr);
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#pragma warning restore CA5392
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}
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}
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namespace StgSharp.Graphics.OpenGL
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{
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public unsafe partial class OpenGLFunction
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{
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private static Dictionary<IntPtr, OpenGLFunction> contextToGLMap = new Dictionary<IntPtr, OpenGLFunction>();
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private OpenglContext* _context;
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private OpenGLFunction()
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{
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textureUnitCountGetter = new Lazy<int>(() => GetMaskInteger(GLconst.MAX_TEXTURE_IMAGE_UNITS));
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unusedTextureImageUintInitilizing = new Lazy<ConcurrentQueue<TextureUnit>>(InitializeUnusedTextureImageUint);
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}
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internal IntPtr ContextHandle => (IntPtr)_context;
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internal static OpenGLFunction CurrentGL { get; set; }
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protected ref OpenglContext Context
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{
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get
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{
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#if DEBUG
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if ((IntPtr)_context == IntPtr.Zero)
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{
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throw new NullReferenceException();
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}
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#endif
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return ref (*_context);
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}
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void ActiveTextureUnit(uint type)
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{
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Context.glActiveTexture(type);
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}
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[Conditional("DEBUG")]
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public void Assert(bool shouldReportWhenNormal)
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{
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try
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{
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uint code = Context.glGetError();
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if (code != GLconst.NO_ERROR)
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{
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throw new GlExecutionException(code);
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}
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if (shouldReportWhenNormal)
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{
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Console.WriteLine("OpenGL runs normally");
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}
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}
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catch (GlExecutionException ex)
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{
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throw ex;
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}
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void AttachShader(GlHandle program, GlHandle shader)
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{
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Context.glAttachShader(program.Value, shader.Value);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void BindBuffer(BufferType bufferType, GlHandle handle)
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{
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Context.glBindBuffer((uint)bufferType, handle.Value);
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}
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/// <summary>
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/// Bind a frame buffer to a frame buffer target
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/// Same function as <see href="https://docs._gl/gl3/glBindFramebuffer">glBindFramebuffer</see>.
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/// </summary>
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/// <param name="target"> The frame buffer target of the binding operation.</param>
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/// <param name="handle"> The handle of the frame buffer object to bind.</param>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void BindFrameBuffer(FrameBufferTarget target, GlHandle handle)
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{
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Context.glBindFramebuffer((uint)target, handle.Value);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void BindRenderBuffer(GlHandle handle)
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{
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Context.glBindRenderbuffer(GLconst.RENDERBUFFER, handle.Value);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void BindTexture(uint type, GlHandle texture)
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{
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Context.glBindTexture(type, texture.Value);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void BindVertexArray(GlHandle handle)
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{
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Context.glBindVertexArray(handle.Value);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public FrameBufferStatus CheckFrameBufferStatus(FrameBufferTarget target)
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{
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return (FrameBufferStatus)Context.glCheckFramebufferStatus((uint)target);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void Clear(MaskBufferBit mask)
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{
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Context.glClear((uint)mask);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe void ClearColor(float R, float G, float B, float A)
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{
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Context.glClearColor(R, G, B, A);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void ClearError()
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{
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while (Context.glGetError() != 0) { }
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe void ClearGraphicError()
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{
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while (Context.glGetError() != 0) { }
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void CombineFrameBufferRenderBuffer(FrameBufferAttachment attachment, GlHandle rboHandle)
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{
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Context.glFramebufferRenderbuffer(GLconst.FRAMEBUFFER, (uint)attachment, GLconst.RENDERBUFFER, rboHandle.Value);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void CompileShader(GlHandle shaderhandle)
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{
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Context.glCompileShader(shaderhandle.Value);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe GlHandle CreateGraphicProgram()
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{
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return GlHandle.Alloc(Context.glCreateProgram());
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public GlHandle CreateProgram()
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{
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return GlHandle.Alloc(Context.glCreateProgram());
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe GlHandle[] CreateProgram(int count)
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{
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GlHandle[] h = new GlHandle[count];
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for (int i = 0; i < count; i++)
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{
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h.SetValue(i, Context.glCreateProgram());
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}
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return h;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public GlHandle[] CreateShaderSet(int count, ShaderType type)
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{
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GlHandle[] ret = new GlHandle[count];
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uint t = (uint)type;
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for (int i = 0; i < count; i++)
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{
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uint id = Context.glCreateShader(t);
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if (id == 0)
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{
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uint error = Context.glGetError();
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throw new InvalidOperationException($"Failed in creating shader: {error}");
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}
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ret[i] = GlHandle.Alloc(id);
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}
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return ret;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe void DeleteBuffer(GlHandle handle)
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{
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Context.glDeleteBuffers(1, (uint*)&handle);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe void DeleteBuffers(GlHandle[] handle)
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{
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if ((handle == null) || (handle.Length == 0))
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{
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throw new ArgumentNullException(nameof(handle));
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}
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fixed (GlHandle* hptr = handle)
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{
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uint* iptr = (uint*)hptr;
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for (int i = 0; i < handle.Length; i++)
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{
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Context.glDeleteBuffers(1, iptr + i);
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}
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}
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe void DeleteVertexArrays(GlHandle[] arrays)
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{
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fixed (GlHandle* hptr = arrays)
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{
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uint* iptr = (uint*)hptr;
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for (int i = 0; i < arrays.Length; i++)
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{
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Context.glDeleteVertexArrays(1, iptr + i);
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}
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}
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe void DrawElements(GeometryType mode, uint count, TypeCode type, IntPtr ptr)
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{
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uint a;
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a = type switch
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{
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TypeCode.UInt32 => GLconst.UNSIGNED_INT,
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TypeCode.UInt16 => GLconst.UNSIGNED_SHORT,
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TypeCode.Byte => GLconst.UNSIGNED_BYTE,
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_ => throw new ArgumentException(
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$"{$"{$"Parameter error in parameter {nameof(type)} method DrawElements. "}"}{$"{$"Only {typeof(uint).Name},{typeof(ushort).Name},{typeof(byte).Name} types are supported."}"}")
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};
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Context.glDrawElements((uint)mode, count, a, (void*)ptr);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void DrawElementsInstanced(
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GeometryType mode, uint count, TypeCode type, IntPtr ptr, uint amount
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)
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{
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uint a;
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switch (type)
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{
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case TypeCode.UInt32:
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a = GLconst.UNSIGNED_INT;
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break;
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case TypeCode.UInt16:
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a = GLconst.UNSIGNED_SHORT;
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break;
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case TypeCode.Byte:
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a = GLconst.UNSIGNED_BYTE;
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break;
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default:
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InternalIO.InternalWriteLog(
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$"{$"Parameter error in parameter {nameof(type)} method DrawElements. "}{$"Only {typeof(uint).Name},{typeof(ushort).Name},{typeof(byte).Name} types are supported."}",
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LogType.Error);
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return;
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}
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Context.glDrawElementsInstanced((uint)mode, count, a, (void*)ptr, amount);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void Enable(GLOperation operation)
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{
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Context.glEnable((uint)operation);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void FrameBufferTexture2d(FrameBufferTarget target, uint attachment, Texture2DTarget texTarget, GlHandle textureHandle, int level)
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{
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Context.glFramebufferTexture2D(
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(uint)target, attachment, (uint)texTarget, textureHandle.Value, level
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);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe GlHandle[] GenBuffers(int count)
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{
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GlHandle[] h = new GlHandle[count];
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fixed (GlHandle* hptr = h)
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{
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for (int i = 0; i < count; i++)
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{
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Context.glGenBuffers(count, ((uint*)hptr) + i);
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}
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}
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return h;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void GenerateMipmap(Texture2DTarget target)
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{
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Context.glGenerateMipmap((uint)target);
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}
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public unsafe GlHandle[] GenFrameBuffers(int count)
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{
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GlHandle[] h = new GlHandle[count];
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fixed (GlHandle* hptr = h)
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{
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Context.glGenFramebuffers(1, (uint*)hptr);
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}
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return h;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe GlHandle[] GenRenderBuffer(int count)
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{
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GlHandle[] h = new GlHandle[count];
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fixed (GlHandle* hptr = h)
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{
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Context.glGenRenderbuffers(count, (uint*)hptr);
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}
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return h;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe GlHandle[] GenTextures(int count)
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{
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GlHandle[] h = new GlHandle[count];
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fixed (GlHandle* hptr = h)
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{
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Context.glGenTextures(count, (uint*)hptr);
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}
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return h;
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}
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public unsafe GlHandle[] GenVertexArrays(int count)
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{
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GlHandle[] h = new GlHandle[count];
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fixed (GlHandle* hptr = h)
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{
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Context.glGenVertexArrays(count, (uint*)hptr);
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}
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return h;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public uint GetError()
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{
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return Context.glGetError();
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}
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public unsafe int GetMaskInteger(uint statusCode)
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{
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int ret = 0;
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Context.glGetIntegerv(statusCode, &ret);
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return ret;
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}
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public string GetShaderStatus(Shader s, int index, int key)
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{
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IntPtr sptr = IntPtr.Zero;
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if (InternalIO.glCheckShaderStatus(ref Context, s.handle[index].Value, key, ref sptr) == 0)
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{
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return Marshal.PtrToStringAnsi(sptr);
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}
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return string.Empty;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe void GetTextureImage<T>(Texture2DTarget target, int level, ImageChannel channel, PixelChannelLayout channelLayout, T[] dataStream)
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where T : struct,
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#if NET8_0_OR_GREATER
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INumber
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#else
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IConvertible
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#endif
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{
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#pragma warning disable CS8500
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fixed (T* tptr = dataStream)
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{
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Context.glGetTexImage((uint)target, level, (uint)channel, (uint)channelLayout, tptr);
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}
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#pragma warning restore CS8500
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe GlHandle GetUniformLocation(GlHandle program, string name)
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{
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byte[] code = Encoding.UTF8.GetBytes(name);
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fixed (byte* ptr = code)
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{
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int ret = Context.glGetUniformLocation(program.Value, ptr);
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#if DEBUG
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if ((ret == GLconst.INVALID_OPERATION) ||
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(ret == GLconst.INVALID_VALUE))
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{
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throw new InvalidOperationException();
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}
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if (ret == -1)
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{
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throw new UniformEmptyReferenceException(nameof(program), name);
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}
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#endif
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return GlHandle.SignedAlloc(ret);
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}
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe void LoadShaderSource(GlHandle shaderHandle, byte[] codeStream)
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{
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fixed (byte* streamPtr = codeStream)
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{
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Context.glShaderSource(shaderHandle.Value, 1, &streamPtr, (void*)0);
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}
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void ReadPixels(
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(int X, int Y) beginPosition, (int width, int height) size, FrameBufferChannel format, PixelChannelLayout dataType, ref byte[] stream
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)
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{
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fixed (byte* bptr = stream)
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{
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Context.glReadPixels(
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beginPosition.X, beginPosition.Y,
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size.width, size.height, (uint)format, (uint)dataType, bptr);
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}
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}
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public void RereadImage(
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in Image i, (int X, int Y) beginPosition, FrameBufferChannel format, PixelChannelLayout dataType)
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{
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byte[] pixels = i.PixelBuffer;
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if (!pixels.CheckArrayFormat(dataType))
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{
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throw new GlArrayFormatException(dataType, "i.PixelArray");
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}
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fixed (byte* bptr = pixels)
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{
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Context.glReadPixels(
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beginPosition.X, beginPosition.Y, i.Width, i.Height, (uint)format, (uint)dataType, bptr);
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}
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i.PixelUpdateCount++;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe void SetBufferData<T>(BufferType bufferType, T bufferData, BufferUsage usage)
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where T : struct
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{
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int size = Marshal.SizeOf<T>();
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#pragma warning disable CS8500
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T* p = &bufferData;
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#pragma warning restore CS8500
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Context.glBufferData(
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(uint)bufferType,
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(IntPtr)size,
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(IntPtr)p,
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(uint)usage);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe void SetBufferData<T>(BufferType bufferType, T[] bufferArray, BufferUsage usage)
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where T : struct,
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#if NET8_0_OR_GREATER
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INumber
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#else
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IConvertible
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#endif
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{
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int size = bufferArray.Length * Marshal.SizeOf(typeof(T));
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if (bufferArray == null)
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{
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return;
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}
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#pragma warning disable CS8500
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fixed (void* bufferPtr = bufferArray)
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#pragma warning restore CS8500
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{
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Context.glBufferData(
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(uint)bufferType,
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(IntPtr)size,
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(IntPtr)bufferPtr,
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(uint)usage);
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}
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe void SetBufferData<T>(BufferType bufferType, ReadOnlySpan<T> bufferArray, BufferUsage usage)
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where T : struct,
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#if NET8_0_OR_GREATER
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INumber
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#else
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IConvertible
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#endif
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{
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int size = bufferArray.Length * Marshal.SizeOf(typeof(T));
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if (bufferArray == null)
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{
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return;
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}
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#pragma warning disable CS8500
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fixed (void* bufferPtr = bufferArray)
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#pragma warning restore CS8500
|
|
{
|
|
Context.glBufferData(
|
|
(uint)bufferType,
|
|
(IntPtr)size,
|
|
(IntPtr)bufferPtr,
|
|
(uint)usage);
|
|
}
|
|
}
|
|
|
|
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public unsafe void SetBufferData<T>(BufferType bufferType, Span<T> bufferArray, BufferUsage usage)
|
|
where T : struct,
|
|
#if NET8_0_OR_GREATER
|
|
INumber
|
|
#else
|
|
IConvertible
|
|
#endif
|
|
{
|
|
int size = bufferArray.Length * Marshal.SizeOf(typeof(T));
|
|
if (bufferArray == null)
|
|
{
|
|
return;
|
|
}
|
|
|
|
#pragma warning disable CS8500
|
|
fixed (void* bufferPtr = &bufferArray.GetPinnableReference())
|
|
#pragma warning restore CS8500
|
|
{
|
|
Context.glBufferData(
|
|
(uint)bufferType,
|
|
(IntPtr)size,
|
|
(IntPtr)bufferPtr,
|
|
(uint)usage);
|
|
}
|
|
}
|
|
|
|
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public unsafe void SetBufferVectorData<T>(BufferType bufferType, ReadOnlySpan<T> bufferArray, BufferUsage usage)
|
|
where T : struct, IVector
|
|
{
|
|
int size = bufferArray.Length * Marshal.SizeOf(typeof(T));
|
|
if (bufferArray == null)
|
|
{
|
|
return;
|
|
}
|
|
#pragma warning disable CS8500
|
|
fixed (void* bufferPtr = &bufferArray.GetPinnableReference())
|
|
#pragma warning restore CS8500
|
|
{
|
|
Context.glBufferData(
|
|
(uint)bufferType,
|
|
(IntPtr)size,
|
|
(IntPtr)bufferPtr,
|
|
(uint)usage);
|
|
}
|
|
}
|
|
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public unsafe void SetBufferVectorData<T>(BufferType bufferType, T[] bufferArray, BufferUsage usage)
|
|
where T : struct, IVector
|
|
{
|
|
int size = bufferArray.Length * Marshal.SizeOf(typeof(T));
|
|
if (bufferArray == null)
|
|
{
|
|
return;
|
|
}
|
|
#pragma warning disable CS8500
|
|
fixed (void* bufferPtr = bufferArray)
|
|
#pragma warning restore CS8500
|
|
{
|
|
Context.glBufferData(
|
|
(uint)bufferType,
|
|
(IntPtr)size,
|
|
(IntPtr)bufferPtr,
|
|
(uint)usage);
|
|
}
|
|
}
|
|
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public unsafe void SetRenderBufferStorage(RenderBufferInternalFormat internalFormat, (int width, int height) size)
|
|
{
|
|
Context.glRenderbufferStorage(
|
|
GLconst.RENDERBUFFER, (uint)internalFormat, size.width, size.height
|
|
);
|
|
}
|
|
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public void SetVertexAttribute(uint index, int size, TypeCode t, bool normalized, uint stride, int pointer)
|
|
{
|
|
uint type = InternalIO.GLtype[t];
|
|
Context.glVertexAttribPointer(index, size, type, normalized ? 1 : 0, stride, (void*)pointer);
|
|
Context.glEnableVertexAttribArray(index);
|
|
}
|
|
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public void TextureImage2d<T>(Texture2DTarget target, int level, uint internalformat, uint width, uint height,
|
|
uint format, PixelChannelLayout type, T[] pixels) where T : struct,
|
|
#if NET8_0_OR_GREATER
|
|
INumber
|
|
#else
|
|
IConvertible
|
|
#endif
|
|
{
|
|
#pragma warning disable CS8500
|
|
fixed (T* tptr = ((pixels == null) || (pixels.Length == 0)) ? null : pixels)
|
|
{
|
|
Context.glTexImage2D(
|
|
(uint)target, level, internalformat, width, height, 0, format, (uint)type, tptr);
|
|
}
|
|
#pragma warning restore CS8500
|
|
}
|
|
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public void TextureImage2d<T>(Texture2DTarget target, int level, uint internalformat, uint width, uint height,
|
|
uint format, PixelChannelLayout type, Span<T> pixelSpan) where T : struct,
|
|
#if NET8_0_OR_GREATER
|
|
INumber
|
|
#else
|
|
IConvertible
|
|
#endif
|
|
{
|
|
#pragma warning disable CS8500
|
|
fixed (T* tptr = pixelSpan)
|
|
{
|
|
Context.glTexImage2D(
|
|
(uint)target, level, internalformat, width, height, 0, format, (uint)type, tptr);
|
|
}
|
|
#pragma warning restore CS8500
|
|
}
|
|
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public void TextureParameter(int target, uint pname, int param)
|
|
{
|
|
Context.glTexParameteri((uint)target, pname, param);
|
|
}
|
|
|
|
public static bool TryGetFunctionPackage(IntPtr handle, out OpenGLFunction functionPackage)
|
|
{
|
|
return contextToGLMap.TryGetValue(handle, out functionPackage);
|
|
}
|
|
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public void UseProgram(GlHandle program)
|
|
{
|
|
Context.glUseProgram(program.Value);
|
|
}
|
|
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public void VertexAttributeDivisor(uint layoutIndex, uint divisor)
|
|
{
|
|
Context.glVertexAttribDivisor(layoutIndex, divisor);
|
|
}
|
|
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public void Viewport(int x, int y, uint width, uint height)
|
|
{
|
|
Context.glViewport(x, y, width, height);
|
|
}
|
|
|
|
|
|
public void WaitAccomplishment()
|
|
{
|
|
Context.glFinish();
|
|
}
|
|
|
|
internal static OpenGLFunction BuildGlFunctionPackage(IntPtr handle)
|
|
{
|
|
OpenGLFunction pack;
|
|
if (contextToGLMap.TryGetValue(handle, out pack))
|
|
{
|
|
return pack;
|
|
}
|
|
pack = new OpenGLFunction { _context = (OpenglContext*)handle };
|
|
contextToGLMap.Add(handle, pack);
|
|
return pack;
|
|
}
|
|
|
|
~OpenGLFunction()
|
|
{
|
|
contextToGLMap.Remove(ContextHandle);
|
|
}
|
|
|
|
}
|
|
}
|
|
|