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POglGenBuffers and glGenTextures always return 0
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  1. POglGenBuffers and glGenTextures always return 0
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    copied!<h2>Setup</h2> <p>I'm using <code>System.Windows.Forms.Form</code> as window source. <em>Constructor:</em></p> <pre><code>FormBorderStyle = FormBorderStyle.None; WindowState = FormWindowState.Maximized; </code></pre> <hr> <p><em>Form-Load:</em></p> <pre><code>_Device = new Device(this, DeviceConfiguration.SelectConfiguration(Bits.Eight, Bits.Eight, Bits.Eight, Bits.Eight, Bits.Twentyfour, Bits.Eight, true, true), 1024, 768); Debug.WriteLine(GL.GetString(GL.GL_EXTENSIONS)); base.OnLoad(e); </code></pre> <p>In the load method the device configuration is selected, which is actually working. Calls like <code>GL.GetString(GL.GL_EXTENSIONS)</code> are working. All gl-methods are loaded too so all used methods are supported.</p> <hr> <p><em>Form-Shown:</em></p> <pre><code>Application.Initialize(this); RenderSettings = new RenderSettings(this); Debug.WriteLine("After setup render settings: " + GL.GetErrorDescription()); _Textures[0] = Resources.LoadTexture("Resources\\Buttons\\btn_big_bg_normal.dds"); _Textures[1] = Resources.LoadTexture("Resources\\Buttons\\btn_big_bg_normal.dds"); base.OnShown(e); _IsShown = true; </code></pre> <p>The <code>Application.Initialize(this)</code> initializes the framework used ( written by me ) and is also initializing a default shader, which is working, and model which is not working. This causes the rendering later to fail because the returning handle is invalid.</p> <h2>Framework</h2> <p>I've a own OpenGL-wrapper which has enums for all parameters to enable development without looking in the OpenGL-references many times. As example the method <code>glGenBuffers</code>:</p> <pre><code>[MethodGL] public delegate void glGenBuffers(Int32 count, ArrayBufferHandle[] buffers); </code></pre> <p>The <code>ArrayBufferHandle</code> definition:</p> <pre><code>/// &lt;summary&gt; /// Represents a handle to a buffer /// &lt;/summary&gt; [StructLayout(LayoutKind.Explicit, Size = 4)] [ComVisible(true)] public struct ArrayBufferHandle { [FieldOffset(0)] UInt32 Handle; /// &lt;summary&gt; /// Determines if the buffer is valid /// &lt;/summary&gt; public Boolean IsValid { get { return Handle &gt; 0; } } /// &lt;summary&gt; /// Retrieves the default array buffer /// &lt;br&gt;which is used to reset bindings&lt;/br&gt; /// &lt;/summary&gt; public static ArrayBufferHandle Default { get { return new ArrayBufferHandle(); } } /// &lt;summary&gt; /// Retrieves the string representation of the current object /// &lt;/summary&gt; /// &lt;returns&gt;The current object represented as string&lt;/returns&gt; public override String ToString() { return String.Format("[ArrayBufferHandle Handle:{0} Valid:{1}]", Handle, IsValid); } } </code></pre> <p>Of course the shader creation is working and uses the types like the shown above.</p> <h2>Conclusion</h2> <p>I don't think i've much more to say to the issues i've faced. <code>glGenBuffers</code> and <code>glGenTextures</code> returning zero and i don't know why. The setup seems like others i've already used.</p> <p>Of course the window is shown with a blue background when not rendering any models and i don't have any errors when using <code>glGetError</code>.</p>
 

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