395 lines
14 KiB
C#
395 lines
14 KiB
C#
//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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// file="GLpack.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.Logic;
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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.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace StgSharp.Graphics
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{
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internal static unsafe partial class GL
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{
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private static GLcontext* context;
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public static IntPtr CurrentContextHandle
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{
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get { return (IntPtr)context; }
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set
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{
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context = (GLcontext*)value;
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}
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}
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private static ref GLcontext 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 static void ActiveTexture(uint type)
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{
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Context.glActiveTexture(type);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static 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 static 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 static 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 static 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 static 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 static 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 static 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 static 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 static 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 static 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 static 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 static unsafe glHandleSet CreateProgram(int count)
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{
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glHandleSet h = new glHandleSet(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 static glHandleSet CreateShaderSet(int count, ShaderType type)
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{
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glHandleSet ret = new glHandleSet(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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InternalIO.InternalWriteLog($"Failed in creating shader: {error}", LogType.Error);
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throw new Exception();
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}
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ret.SetValue(i, id);
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}
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return ret;
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}
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public static unsafe IntPtr CreateWindowHandle(
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int width, int height, string tittle, IntPtr monitor, Form share)
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{
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byte[] tittleBytes = Encoding.UTF8.GetBytes(tittle);
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IntPtr windowPtr;
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if (share == null)
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{
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windowPtr = InternalIO.glfwCreateWindow(
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width, height, tittleBytes, monitor, IntPtr.Zero);
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}
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else
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{
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windowPtr = InternalIO.glfwCreateWindow(
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width, height, tittleBytes, monitor, share.id);
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}
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if (((long)windowPtr == -1) || ((long)windowPtr == -2))
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{
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throw new Exception("Cannot create window instance!");
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}
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else
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{
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return windowPtr;
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}
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static unsafe void DeleteBuffer(glHandle handle)
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{
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Context.glDeleteBuffers(1, (uint*)handle.Handle);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static unsafe void DeleteBuffers(glHandleSet handle)
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{
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Context.glDeleteBuffers(handle.length, (uint*)handle.Handle);
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handle.Release();
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static unsafe void DeleteVertexArrays(glHandleSet arrays)
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{
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Context.glDeleteVertexArrays(arrays.length, (uint*)arrays.Handle);
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arrays.Release();
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static unsafe void DrawElements(GepmetryType mode, uint count, TypeCode type, IntPtr ptr)
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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.glDrawElements((uint)mode, count, a, (void*)ptr);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static 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 static unsafe glHandleSet GenBuffers(int count)
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{
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glHandleSet h = new glHandleSet(count);
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Context.glGenBuffers(count, (uint*)h.Handle);
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return h;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static unsafe glHandleSet GenTextures(int count)
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{
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glHandleSet h = new glHandleSet(count);
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Context.glGenTextures(count, (uint*)h.Handle);
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return h;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static unsafe glHandleSet GenVertexArrays(int count)
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{
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glHandleSet h = new glHandleSet(count);
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Context.glGenVertexArrays(count, (uint*)h.Handle);
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return h;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static unsafe glSHandle 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 == (int)(GLconst.INVALID_OPERATION) ||
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ret == (int)(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 glSHandle.Alloc(ret);
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}
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static unsafe void LoadShaderSource(glHandle shaderHandle, string codeStream)
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{
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byte[] stream = Encoding.UTF8.GetBytes(codeStream);
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fixed (byte* streamPtr = stream)
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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 static unsafe void MakeContextCurrent(Form form)
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{
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if (form.WindowID == IntPtr.Zero)
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{
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InternalIO.InternalWriteLog($"From {nameof(form)} is not inited.", LogType.Warning);
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return;
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}
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InternalIO.glfwMakeContextCurrent(form.id);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static unsafe void SetBufferData<T>(BufferType bufferType, T bufferData, BufferUsage usage)
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{
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int size = Marshal.SizeOf<T>();
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T* p = &bufferData;
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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 static unsafe void SetBufferData<T>(BufferType bufferType, T[] bufferArray, BufferUsage usage)
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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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fixed (void* bufferPtr = bufferArray)
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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 static void SetVertexAttribute(uint index, int size, TypeCode t, bool normalized, uint stride, int pointer)
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{
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uint type = InternalIO.GLtype[t];
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Context.glVertexAttribPointer(index, size, type, normalized ? 1 : 0, stride, (void*)pointer);
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Context.glEnableVertexAttribArray(index);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void TextureImage2d<T>(int target, int level, uint internalformat, uint width, uint height, uint format, uint type, glHandle pixels)
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{
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Context.glTexImage2D(
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(uint)target, level, internalformat, width, height, 0, format, type, pixels.valuePtr
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);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void TextureParameter(int target, uint pname, int param)
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{
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Context.glTexParameteri((uint)target, pname, param);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void UseProgram(glHandle program)
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{
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Context.glUseProgram(program.Value);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void Viewport(int x, int y, uint width, uint height)
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{
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Context.glViewport(x, y, width, height);
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}
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}
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}
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