OpenTK(OpenGL) bitmap data format problem

问题

I'm trying to print the bitmap data to the screen with opentk.

GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, data.Width, data.Height, 0,
            OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, data.Scan0);

I get an error on the part. My guess is I'm writing the formats wrong. With Format8bppIndexed, I can view properly in picturebox. My incoming image is black and white.

incoming data;

BitmapSingleImage = new Bitmap(rsSplitWidth, rsSplitHeight, rsSplitWidth, System.Drawing.Imaging.PixelFormat.Format8bppIndexed, (IntPtr)pt);
    
videosGUI.LoadTexture(BitmapSingleImage);

the place receiving the data;

public int LoadTexture(Bitmap file)
{
    Bitmap bitmap = file;
    GL.Hint(HintTarget.PerspectiveCorrectionHint, HintMode.Nicest);

    GL.GenTextures(1, out texture);
    GL.BindTexture(TextureTarget.Texture2D, texture);

    BitmapData data = bitmap.LockBits(new System.Drawing.Rectangle(0, 0, bitmap.Width, bitmap.Height),
        ImageLockMode.ReadOnly, 
        System.Drawing.Imaging.PixelFormat.Format8bppIndexed);

    GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, data.Width, data.Height, 0,
        OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, data.Scan0);
    bitmap.UnlockBits(data);


    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)TextureWrapMode.Repeat);
    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)TextureWrapMode.Repeat);
    return texture;
}

来源：https://stackoverflow.com/questions/63469704/opentkopengl-bitmap-data-format-problem

标签

opengl

opentk