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尝试使用sharpgl创建着色器时出现以下异常

System.Exception: Cannot invoke extension function glShaderSource ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.ArgumentException: Cannot marshal: Encountered unmappable character.
   at System.StubHelpers.MngdNativeArrayMarshaler.ConvertContentsToNative(IntPtr pMarshalState, Object& pManagedHome, IntPtr pNativeHome)
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
   at System.Delegate.DynamicInvokeImpl(Object[] args)
   at System.Delegate.DynamicInvoke(Object[] args)
   at SharpGL.OpenGL.InvokeExtensionFunction[T](Object[] args) in c:\Repositories\GitHub\sharpgl\source\SharpGL\Core\SharpGL\OpenGLExtensions.cs:line 66
   --- End of inner exception stack trace ---
   at SharpGL.OpenGL.InvokeExtensionFunction[T](Object[] args) in c:\Repositories\GitHub\sharpgl\source\SharpGL\Core\SharpGL\OpenGLExtensions.cs:line 70
   at SharpGL.OpenGL.ShaderSource(UInt32 shader, String source) in c:\Repositories\GitHub\sharpgl\source\SharpGL\Core\SharpGL\OpenGLExtensions.cs:line 1296
   at SharpGL.Shaders.Shader.Create(OpenGL gl, UInt32 shaderType, String source) in c:\Repositories\GitHub\sharpgl\source\SharpGL\Core\SharpGL\Shaders\Shader.cs:line 20
   at SharpGL.Shaders.ShaderProgram.Create(OpenGL gl, String vertexShaderSource, String fragmentShaderSource, Dictionary`2 attributeLocations) in c:\Repositories\GitHub\sharpgl\source\SharpGL\Core\SharpGL\Shaders\ShaderProgram.cs:line 26

我目前使用的代码是

 try
 {
     // Create the shader program.
     var vertexShaderSource = @"#version 150 core
in vec3 in_Position;
in vec3 in_Color;
out vec3 pass_Color;
uniform mat4 projectionMatrix;
uniform mat4 viewMatrix;
uniform mat4 modelMatrix;
void main(){gl_Position = projectionMatrix * viewMatrix * modelMatrix * vec4(in_Position, 1.0);pass_Color = in_Color;}";

     var fragmentShaderSource = @"#version 150 core
in vec3 pass_Color;
out vec4 out_Color;
void main(void){ out_Color = vec4(pass_Color, 1.0); }";

     shaderProgram = new ShaderProgram();
     shaderProgram.Create(gl, vertexShaderSource, fragmentShaderSource, null); // <- exception
     shaderProgram.BindAttributeLocation(gl, attributeIndexPosition, "in_Position");
     shaderProgram.BindAttributeLocation(gl, attributeIndexColour, "in_Color");
     shaderProgram.AssertValid(gl);
}
catch (Exception e)
{
    System.Diagnostics.Debug.Write( e.ToString() );
}

例外是上shaderProgram.Create线。删除或缩小着色器源字符串时，不会发生错误，但着色器不会编译，我得到Failed to compile shader with ID 2.错误。我还在源代码中找到了异常的来源，但不知道如何解决这个问题或实际原因是什么。

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1 回答 1

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我已经解决了这个问题。逐个检查着色器字符，在in_Color. 使用带有 ANSI 编码的 notepad++ 查看源代码显示了一些不应该是它们的字符。

以供将来参考以不同的编码查看源并检查是否有任何不应该存在的字符。

于 2015-01-06T16:31:44.733 回答