82 lines
2.5 KiB
C#
82 lines
2.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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namespace SharpGL.Shaders
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{
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/// <summary>
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/// This is the base class for all shaders (vertex and fragment). It offers functionality
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/// which is core to all shaders, such as file loading and binding.
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/// </summary>
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public class Shader
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{
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public void Create(OpenGL gl, uint shaderType, string resourceFile)
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{
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// Create the OpenGL shader object.
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shaderObject = gl.CreateShader(shaderType);
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// Set the shader source.
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using (var reader = new StreamReader(Assembly.GetExecutingAssembly().GetManifestResourceStream(string.Format("JuicyGraphics.JuicyGraphics.renderer.shaders.{0}", resourceFile)))) {
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gl.ShaderSource(shaderObject, reader.ReadToEnd());
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}
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// Compile the shader object.
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gl.CompileShader(shaderObject);
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// Now that we've compiled the shader, check it's compilation status. If it's not compiled properly, we're
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// going to throw an exception.
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if (GetCompileStatus(gl) == false)
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{
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throw new ShaderCompilationException(string.Format("Failed to compile shader with ID {0}.", shaderObject), GetInfoLog(gl));
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}
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}
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public void Delete(OpenGL gl)
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{
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gl.DeleteShader(shaderObject);
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shaderObject = 0;
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}
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public bool GetCompileStatus(OpenGL gl)
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{
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int[] parameters = new int[] { 0 };
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gl.GetShader(shaderObject, OpenGL.GL_COMPILE_STATUS, parameters);
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return parameters[0] == OpenGL.GL_TRUE;
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}
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public string GetInfoLog(OpenGL gl)
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{
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// Get the info log length.
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int[] infoLength = new int[] { 0 };
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gl.GetShader(ShaderObject,
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OpenGL.GL_INFO_LOG_LENGTH, infoLength);
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int bufSize = infoLength[0];
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// Get the compile info.
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StringBuilder il = new StringBuilder(bufSize);
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gl.GetShaderInfoLog(shaderObject, bufSize, IntPtr.Zero, il);
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return il.ToString();
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}
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/// <summary>
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/// The OpenGL shader object.
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/// </summary>
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private uint shaderObject;
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/// <summary>
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/// Gets the shader object.
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/// </summary>
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public uint ShaderObject
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{
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get { return shaderObject; }
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}
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}
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}
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