public static Bitmap ScreenShot(int xx, int yy, int width, int height, ReadBufferMode buffer)
{
Bitmap transfermap = new Bitmap(width, height);
System.Drawing.Imaging.BitmapData data =
transfermap.LockBits(new Rectangle(0, 0, transfermap.Width, transfermap.Height), System.Drawing.Imaging.ImageLockMode.WriteOnly,
System.Drawing.Imaging.PixelFormat.Format32bppArgb);
GL.ReadBuffer(buffer);
GL.ReadPixels(xx, yy, transfermap.Width, transfermap.Height, OpenTK.Graphics.OpenGL4.PixelFormat.Rgba, PixelType.UnsignedByte, data.Scan0);
unsafe
{
int PixelSize = 4;
unsafe
{
for (int y = 0; y < data.Height; y++)
{
byte* row = (byte*)data.Scan0 + (y * data.Stride);
for (int x = 0; x < data.Width; x++)
{
byte r = row[x * PixelSize + 2];
byte b = row[x * PixelSize];
row[x * PixelSize] = r;
row[x * PixelSize + 2] = b;
}
}
}
}
transfermap.UnlockBits(data);
transfermap.RotateFlip(RotateFlipType.RotateNoneFlipY);
return transfermap;
}
public static void FramebufferReadBufferEXT(UInt32 framebuffer, ReadBufferMode mode)
{
Debug.Assert(Delegates.pglFramebufferReadBufferEXT != null, "pglFramebufferReadBufferEXT not implemented");
Delegates.pglFramebufferReadBufferEXT(framebuffer, (Int32)mode);
CallLog("glFramebufferReadBufferEXT({0}, {1})", framebuffer, mode);
DebugCheckErrors();
}
internal static extern void glReadBuffer(ReadBufferMode mode);
//public void RasterPos4s(short x, short y, short z, short w)
//{
// gl.glRasterPos4s(x, y, z, w);
//}
//public void RasterPos4sv(short[] v)
//{
// gl.glRasterPos4sv(v);
//}
#endregion
#endregion
public void ReadBuffer(ReadBufferMode mode)
{
gl.glReadBuffer((int)mode);
}
public static void ReadBuffer(ReadBufferMode mode)
{
Delegates.glReadBuffer(mode);
}
public static extern void glReadBuffer(ReadBufferMode mode);
public static void ReadBuffer(ReadBufferMode mode)
{
glReadBuffer deleg = BaseGraphicsContext.Current.Loader.Get<glReadBuffer>();
if (deleg != null)
deleg(mode);
}
///<summary> Blit from read FB into this, x0/y0/x1/y1 are source area, dx0/dy0/dx1/dy1 are destination area.
///Mask indicates what buffer contents are to be copied: GL_COLOR_BUFFER_BIT, GL_DEPTH_BUFFER_BIT and GL_STENCIL_BUFFER_BIT.
///Filt is the interpolation filter, GL_NEAREST or GL_LINEAR
///</summary>
public void Blit(GLFrameBuffer read, ReadBufferMode src, int x0, int y0, int x1, int y1, int dx0, int dy0, int dx1, int dy1, ClearBufferMask mask, BlitFramebufferFilter filt)
{
GL.NamedFramebufferReadBuffer(read.Id, src);
GL.BlitNamedFramebuffer(read.Id, Id, x0, y0, x1, y1, dx0, dy0, dx1, dy1, mask, filt);
GLStatics.Check();
}
public void ReadBuffer(ReadBufferMode readBufferMode)
{
GL.ReadBuffer(readBufferMode);
}
public static void glReadBuffer(ReadBufferMode src)
{
i_OpenGL1_1.glReadBuffer(src);
}
// Bind Read Attachements Only
public void bindAttachements(ReadBufferMode read_attachement)
{
GL.ReadBuffer(read_attachement);
}
// Bind to Read
public void bind(ReadBufferMode read_attachement)
{
GL.BindFramebuffer(FramebufferTarget.ReadFramebuffer, _id);
bindAttachements(read_attachement);
}
public void SetReadBuffer(ReadBufferMode mode)
{
GL.ReadBuffer(mode);
}
/// <summary>
/// Read this GraphicsSurface color buffer.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/>
/// </param>
/// <param name="rBuffer">
/// A <see cref="ReadBufferMode"/> that specify the read buffer where the colors are read from.
/// </param>
/// <param name="x">
/// A <see cref="Int32"/> that specify the x coordinate of the lower left corder of the rectangle area to read.
/// </param>
/// <param name="y">
/// A <see cref="Int32"/> that specify the y coordinate of the lower left corder of the rectangle area to read.
/// </param>
/// <param name="width">
/// A <see cref="Int32"/> that specify the width of the rectangle area to read.
/// </param>
/// <param name="height">
/// A <see cref="Int32"/> that specify the height of the rectangle area to read.
/// </param>
/// <param name="pType">
/// A <see cref="PixelLayout"/> which determine the pixel storage of the returned image.
/// </param>
/// <returns>
/// It returns an <see cref="Image"/> representing the current read buffer <paramref name="rBuffer"/>.
/// </returns>
protected Image ReadBuffer(GraphicsContext ctx, ReadBufferMode rBuffer, uint x, uint y, uint width, uint height, PixelLayout pType)
{
Image image = null;
if ((x + width > Width) || (y + height > Height))
throw new ArgumentException("specified region lies outside the GraphicsSurface");
// Bind for reading
BindRead(ctx);
// Set for reading
Gl.ReadBuffer(rBuffer);
// Allocate image holding data read
image = new Image();
image.Create(pType, width, height);
// Set pixel transfer
foreach (int alignment in new int[] { 8, 4, 2, 1 }) {
if (image.Stride % alignment == 0) {
Gl.PixelStore(PixelStoreParameter.PackAlignment, alignment);
break;
}
}
// Grab frame buffer pixels
PixelFormat rFormat = Pixel.GetGlFormat(pType);
PixelType rType = Pixel.GetPixelType(pType);
Gl.ReadPixels((int)x, (int)y, (int)width, (int)height, rFormat, rType, image.ImageBuffer);
// Unbind from reading
UnbindRead(ctx);
return (image);
}
public static void ReadBuffer(ReadBufferMode mode)
{
CheckCurrent();
_bindings.glReadBuffer((int)mode);
CheckError();
}
/// <summary>
/// Copy this GraphicsSurface color buffer into a buffer.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> which is bound to this GraphicsSurface.
/// </param>
/// <param name="rBuffer">
/// A <see cref="ReadBufferMode"/> that specify the read buffer where the colors are read from.
/// </param>
/// <param name="x">
/// A <see cref="Int32"/> that specify the x coordinate of the lower left corder of the rectangle area to read.
/// </param>
/// <param name="y">
/// A <see cref="Int32"/> that specify the y coordinate of the lower left corder of the rectangle area to read.
/// </param>
/// <param name="texture">
/// A <see cref="Texture"/> that will hold the buffer data.
/// </param>
/// <param name="level">
/// The level of the texture <paramref name="texture"/> to be written.
/// </param>
/// <returns>
/// It returns an <see cref="Image"/> representing the current read buffer <paramref name="rBuffer"/>.
/// </returns>
protected void CopyBuffer(GraphicsContext ctx, ReadBufferMode rBuffer, uint x, uint y, ref Texture texture, uint level)
{
if (texture == null)
throw new ArgumentNullException("texture");
if (texture.Exists(ctx) == false)
throw new ArgumentException("not exists", "texture");
if ((x + texture.Width > Width) || (y + texture.Height > Height))
throw new ArgumentException("specified region lies outside the GraphicsSurface");
// Bind for reading
BindRead(ctx);
// Set for reading
Gl.ReadBuffer(rBuffer);
// Copy pixels from read buffer to texture
Gl.CopyTexImage2D(texture.TextureTarget, (int)level, Pixel.GetGlInternalFormat(texture.PixelLayout, ctx), (int)x, (int)y, (int)texture.Width, (int)texture.Height, 0);
// Unbind from reading
UnbindRead(ctx);
// Reset read configuration
Gl.ReadBuffer(Gl.NONE);
}
/// <summary>
/// Sets the readbuffer for this framebuffer.
/// </summary>
/// <param name="FramebufferID">id of framebuffer to set for.</param>
/// <param name="mode">Readbuffer mode to set.</param>
public static void FramebufferReadBufferEXT(uint FramebufferID, ReadBufferMode mode)
{
Delegates.glFramebufferReadBufferEXT(FramebufferID, mode);
}
public static void ReadBuffer(ReadBufferMode mode)
{
Debug.Assert(Delegates.pglReadBuffer != null, "pglReadBuffer not implemented");
Delegates.pglReadBuffer((Int32)mode);
CallLog("glReadBuffer({0})", mode);
DebugCheckErrors();
}
public void ReadBuffer(ReadBufferMode mode)
{
GL.ReadBuffer(mode);
}
