265 lines
9.1 KiB
C#
265 lines
9.1 KiB
C#
//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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// file="Shader.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;
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using StgSharp.Data;
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using System;
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using System.Collections.Generic;
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using System.IO;
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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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using System.Xml.Linq;
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namespace StgSharp.Graphics.GL
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{
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public abstract partial class glRenderStream : RenderStream
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{
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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protected sealed override Shader CreateShaderSegment(ShaderType type, int count)
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{
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return new Shader( glFunc.CreateShaderSet(count, type), type);
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}
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/// <summary>
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/// Create an instance of <see cref="Shader"/> program
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/// </summary>
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/// <returns>New instance of <see cref="Shader"/> instance. </returns>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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protected sealed override ShaderProgram CreateShaderProgram()
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{
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return new ShaderProgram(this);
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}
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}
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public class Shader : SSDSerializable
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{
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private readonly IntPtr context;
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internal readonly glHandleSet handle;
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public readonly ShaderType type;
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public override SerializableTypeCode SSDTypeCode => SerializableTypeCode.Shader;
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internal unsafe Shader(glHandleSet handle, ShaderType usage)
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{
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this.handle = handle;
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context = glFunc.CurrentContextHandle;
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type = usage;
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}
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/// <summary>
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/// Attach one shader code to a shader program.
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/// </summary>
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/// <param name="target">Shader program to attach</param>
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/// <param name="index">Index of shader code in current shader code set.</param>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void AttachTo(int index, ShaderProgram target)
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{
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glFunc.AttachShader(target.handle, handle[index]);
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}
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public static byte[] FromCodeFile(string fileRoute)
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{
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string str = File.ReadAllText(fileRoute);
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if (string.IsNullOrEmpty(str))
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{
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throw new InvalidOperationException($"Cannot load and GLSL code from {fileRoute}");
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}
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return Encoding.UTF8.GetBytes(str);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe void Compile(int index, byte[] codeStream)
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{
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if (codeStream == null)
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{
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throw new ArgumentNullException(nameof(codeStream));
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}
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glFunc.LoadShaderSource(handle[index], codeStream);
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glFunc.CompileShader(handle[index]);
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CheckStatus(index,ShaderStatus.CompileStatus);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe void Compile(int index, string codeStream)
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{
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if (codeStream == null)
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{
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throw new ArgumentNullException(nameof(codeStream));
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}
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glFunc.LoadShaderSource(handle[index],Encoding.ASCII.GetBytes( codeStream));
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glFunc.CompileShader(handle[index]);
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CheckStatus(index, ShaderStatus.CompileStatus);
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}
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public override string ToString()
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{
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return $"This is a {type} shader, its shader handles are {handle.ToString()}.";
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}
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//TODO shader 的序列化究极麻烦，原因是shader的架构问题
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public override byte[] GetBytes()
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{
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throw new NotImplementedException();
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}
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public void CheckStatus(int index, ShaderStatus status)
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{
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string log = glFunc.GetShaderStatus(this,index, (int)status);
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if (log != "")
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{
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throw new Exception($"Shader Error\n{status}\n" + log);
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}
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}
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public override byte[] GetBytes(out int length)
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{
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throw new NotImplementedException();
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}
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internal override void BuildFromByteStream(byte[] stream)
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{
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throw new NotImplementedException();
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}
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}
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public enum ShaderStatus : int
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{
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CompileStatus = GLconst.COMPILE_STATUS,
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}
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public class ShaderProgram
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{
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private readonly IntPtr binding;
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internal readonly glHandle handle;
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/// <summary>
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/// Init a program with no shader attached.
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/// </summary>
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internal unsafe ShaderProgram(glRenderStream binding)
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{
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this.binding = binding.ContextHandle;
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handle = glFunc.CreateProgram();
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}
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/// <summary>
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/// Get a uniform form current shader,
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/// the value type of the uniform should be provided.
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/// </summary>
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/// <param name="name">Name of the Uniform in shader code</param>
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/// <returns></returns>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe Uniform<T> GetUniform<T>(string name) where T : struct
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{
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return new Uniform<T>(this, name, binding);
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}
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/// <summary>
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/// Get a uniform form current shader,
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/// the value type of the uniform should be provided.
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/// </summary>
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/// <param name="name">Name of the Uniform in shader code</param>
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/// <returns></returns>
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public unsafe Uniform<T, U> GetUniform<T, U>(string name)
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where T : struct
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where U : struct
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{
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return new Uniform<T, U>(this, name, binding);
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}
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/// <summary>
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/// Get a uniform form current shader,
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/// the value type of the uniform should be provided.
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/// </summary>
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/// <param name="name">Name of the Uniform in shader code</param>
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/// <returns></returns>
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public unsafe Uniform<T, U, V> GetUniform<T, U, V>(string name)
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where T : struct
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where U : struct
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where V : struct
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{
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return new Uniform<T, U, V>(this, name);
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}
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/// <summary>
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/// Get a uniform form current shader,
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/// the value type of the uniform should be provided.
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/// </summary>
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/// <param name="name">Name of the Uniform in shader code</param>
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/// <returns></returns>
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public unsafe Uniform<T, U, V, W> GetUniform<T, U, V, W>(string name)
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where T : struct
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where U : struct
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where V : struct
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where W : struct
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{
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return new Uniform<T, U, V, W>(this, name);
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}
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/// <summary>
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/// Link the shader to current context.
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/// </summary>
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public unsafe void Link()
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{
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if (InternalIO.InternalLinkShaderProgram((GLcontext*)this.binding, handle.Value) == 0)
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{
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IntPtr logPtr = InternalIO.InternalReadSSCLog();
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try
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{
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byte[] logByte = new byte[512];
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Marshal.Copy(logPtr, logByte, 0, 512);
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string log = Encoding.UTF8.GetString(logByte);
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log = log.Replace("\0", string.Empty);
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InternalIO.InternalWriteLog(log, LogType.Error);
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}
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catch (Exception ex)
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{
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InternalIO.InternalWriteLog(ex.Message, LogType.Error);
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}
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}
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}
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/// <summary>
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/// Let the current context use this shader.
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/// </summary>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public unsafe void Use()
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{
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glFunc.UseProgram(handle);
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}
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~ShaderProgram()
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{
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//handle.Dispose();
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}
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}
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} |