我正在尝试加载一个PNG文件(其他格式是一个选项),以便在OpenTK中以.netstandard 1.4为目标的项目中呈现为纹理,该项目不支持System.Drawing库。
我能找到的每个opentk示例都依赖于system.drawing.bitmap类。
下面是一个我想在没有系统的情况下创建的方法的例子。
void CreateFromBitmap(System.Drawing.Bitmap image)
{
image.RotateFlip(RotateFlipType.RotateNoneFlipY);
GL.GenTextures(1, out name);
GL.BindTexture(TextureTarget.Texture2D, name);
// set pixel unpacking mode
GL.PixelStore(PixelStoreParameter.UnpackSwapBytes, 0);
GL.PixelStore(PixelStoreParameter.PackRowLength, 0);
GL.PixelStore(PixelStoreParameter.UnpackAlignment, 1);
GL.PixelStore(PixelStoreParameter.UnpackSkipRows, 0);
GL.PixelStore(PixelStoreParameter.UnpackSkipPixels, 0);
BitmapData data = image.LockBits(new System.Drawing.Rectangle(0, 0, image.Width, image.Height),
ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
// Requieres OpenGL >= 1.4
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.GenerateMipmap, 1); // 1 = True
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, data.Width, data.Height, 0,
OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, data.Scan0);
image.UnlockBits(data);
// set texture parameters - will these also be bound to the texture???
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)All.Repeat);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)All.Repeat);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)All.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)All.LinearMipmapLinear);
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)All.Decal);
image = null;
// Unbind
GL.BindTexture(TextureTarget.Texture2D, 0);
}
加载图像并将其格式化以用于opentk的另一种方法是什么?
最佳答案
用于将opentk转换为.netstandard2.0的中间选项
OpenTKCore
用于缺少的系统。图形库:两种选择
(a)https://github.com/zkweb-framework/zkweb.system.drawing[临时]
(b)https://github.com/dotnet/corefx/tree/master/src/System.Drawing.Common[即将正式]