C# (CSharp) IBitmap.TexImage2D示例

示例#1

        public GLTexture2D(string name, IBitmap bmp, bool genmipmaps = false, bool linearfilter = false, OpenTK.Graphics.OpenGL.PixelFormat sourceformat = OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelInternalFormat destformat = PixelInternalFormat.Rgba, PixelType sourcetype = PixelType.UnsignedByte)
            : base(name, TextureTarget.Texture2D, bmp.Width, bmp.Height)
        {
            tex = GL.GenTexture();
            GL.BindTexture(TextureTarget.Texture2D, tex);

reattempt_load:
            try {
                /*BitmapData bmpdata = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
                 * GL.TexImage2D(TextureTarget.Texture2D, 0, destformat, bmpdata.Width, bmpdata.Height, 0, sourceformat, sourcetype, bmpdata.Scan0);
                 * bmp.UnlockBits(bmpdata);*/
                bmp.TexImage2D(destformat);
            }
            catch (OutOfMemoryException) {
                GC.WaitForPendingFinalizers();
                goto reattempt_load;
            }

            if (genmipmaps)
            {
                GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
                if (linearfilter)
                {
                    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.LinearMipmapLinear);
                    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
                }
                else
                {
                    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.NearestMipmapNearest);
                    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Nearest);
                }
            }
            else
            {
                if (linearfilter)
                {
                    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
                    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
                }
                else
                {
                    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Nearest);
                    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Nearest);
                }
            }
            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)TextureWrapMode.Clamp);
            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)TextureWrapMode.Clamp);
        }

示例#2

文件： GLTexture2D.cs 项目： RcSepp/global_view

        public GLTexture2D(string name, IBitmap bmp, bool genmipmaps = false, bool linearfilter = false, OpenTK.Graphics.OpenGL.PixelFormat sourceformat = OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelInternalFormat destformat = PixelInternalFormat.Rgba, PixelType sourcetype = PixelType.UnsignedByte)
            : base(name, TextureTarget.Texture2D, bmp.Width, bmp.Height)
        {
            tex = GL.GenTexture();
            GL.BindTexture(TextureTarget.Texture2D, tex);

            reattempt_load:
            try {
                /*BitmapData bmpdata = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
                GL.TexImage2D(TextureTarget.Texture2D, 0, destformat, bmpdata.Width, bmpdata.Height, 0, sourceformat, sourcetype, bmpdata.Scan0);
                bmp.UnlockBits(bmpdata);*/
                bmp.TexImage2D(destformat);
            }
            catch(OutOfMemoryException) {
                GC.WaitForPendingFinalizers();
                goto reattempt_load;
            }

            if(genmipmaps)
            {
                GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
                if(linearfilter)
                {
                    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.LinearMipmapLinear);
                    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
                }
                else
                {
                    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.NearestMipmapNearest);
                    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Nearest);
                }
            }
            else
            {
                if(linearfilter)
                {
                    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
                    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
                }
                else
                {
                    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Nearest);
                    GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Nearest);
                }
            }
            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)TextureWrapMode.Clamp);
            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)TextureWrapMode.Clamp);
        }