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テクスチャを作成してその表面にレンダリングしたいのですが、問題があります。テクスチャサイズが大きい場合（263x263ピクセルARGB以上）、表面にプリミティブがレンダリングされません（クリア操作）。

これが私のコードです：

    private void Form1_Load(object sender, EventArgs e)
    {
        // Setting up DirectX
        PresentParameters pp = new PresentParameters()
        {
            BackBufferCount = 1,
            Windowed = true,
            SwapEffect = SwapEffect.Discard,
            BackBufferWidth = ClientSize.Width,
            BackBufferHeight = ClientSize.Height,
        };

        d3d = new Direct3D();
        device = new Device(d3d, 0, DeviceType.Hardware, Handle, CreateFlags.HardwareVertexProcessing, pp);

        TexturedVertex.SetVertexDeclaration(device);

        // Creating a triangle
        triangleBuffer = new VertexBuffer(device, 3 * Marshal.SizeOf(typeof(TexturedVertex)), Usage.WriteOnly, VertexFormat.None, Pool.Managed);

        var stream1 = triangleBuffer.Lock(0, 0, LockFlags.None);
        stream1.WriteRange(new[] {
                            new TexturedVertex( -2, -2, 0, 0, 0 ),
                            new TexturedVertex( 0, 2, 0, 1, 0),
                            new TexturedVertex( 2, -2, 0, 1, 1),
                    });

        triangleBuffer.Unlock();

        // Creating a rect
        rectBuffer = new VertexBuffer(device, 4 * Marshal.SizeOf(typeof(TexturedVertex)), Usage.WriteOnly, VertexFormat.None, Pool.Managed);

        var stream2 = rectBuffer.Lock(0, 0, LockFlags.None);
        stream2.WriteRange(new[] {
                            new TexturedVertex( -2, -2, 0, 0, 0 ),
                            new TexturedVertex( -2, 2, 0, 0, 1),
                            new TexturedVertex( 2, -2, 0, 1, 0),
                            new TexturedVertex( 2, 2, 0, 1, 1),
                    });

        TexturedVertex.SetVertexDeclaration(device);
        rectBuffer.Unlock();

        // Creating a render texture
        int w = 262;
        Texture texture = new Texture(device, w, w, 0, Usage.RenderTarget, Format.A8R8G8B8, Pool.Default);

        Surface surface = texture.GetSurfaceLevel(0);
        Surface buffer = device.GetRenderTarget(0);

        device.SetRenderTarget(0, surface);

        device.SetTransform(TransformState.Projection, Matrix.OrthoOffCenterLH(-4, 4, -4, 4, 0, 100));
        device.SetTransform(TransformState.View, Matrix.Identity);
        device.SetTransform(TransformState.World, Matrix.Identity);

        device.Clear(ClearFlags.Target, new Color4(Color.Green), 0, 0);

        device.BeginScene();

        device.SetStreamSource(0, triangleBuffer, 0, Marshal.SizeOf(typeof(TexturedVertex)));
        device.DrawPrimitives(PrimitiveType.TriangleStrip, 0, 3);

        device.EndScene();
        device.Present();

        device.SetRenderTarget(0, buffer);

        // Setting current texture and material
        device.SetTexture(0, texture);
        Material mat = new Material();
        mat.Ambient = mat.Diffuse = mat.Emissive = Color.White;
        device.Material = mat;

        // Setting the projection, view and transform matrix
        device.SetTransform(TransformState.Projection, Matrix.OrthoOffCenterLH(-4, 4, -4, 4, 0, 100));
        device.SetTransform(TransformState.View, Matrix.Identity);
        device.SetTransform(TransformState.World, Matrix.Identity);


        // Setting handler
        this.KeyDown += new KeyEventHandler(Form1_KeyDown);
        this.Paint += new PaintEventHandler(Form1_Paint);
    }

    void Form1_Paint(object sender, PaintEventArgs e)
    {
        device.Clear(ClearFlags.Target, new Color4(Color.Purple), 0, 0);

        device.BeginScene();

        device.SetStreamSource(0, rectBuffer, 0, Marshal.SizeOf(typeof(TexturedVertex)));
        //device.SetStreamSource(0, triangleBuffer, 0, Marshal.SizeOf(typeof(TexturedVertex)));

        device.DrawPrimitives(PrimitiveType.TriangleStrip, 0, 4);

        device.EndScene();

        device.Present();
    }
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1 に答える 1

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フォームのクライアントサイズは幅262ピクセルまたは高さだと思います。

プレゼンテーションパラメータでは、バックバッファとzバッファをこのサイズに制限します。レンダリングするテクスチャのサイズに一致する別のZバッファが必要であり、使用するように設定してから、元に戻す必要があります。

Surface oldDepthBuffer = device.DepthStencilSurface;
Texture db = new Texture(device, w, w, 1, Usage.DepthStencil, oldDepthBuffer.Description.Format, Pool.Default);

Surface myDepthBuffer = db.GetSurfaceLevel(0);

device.SetRenderTarget(0, surface);
device.DepthStencilSurface = myDepthBuffer;

// RENDER to texture

device.DepthStencilSurface = oldDepthBuffer;
于 2012-08-17T11:39:48.010 に答える