public DissolveProcessor(GraphicsInterface gi, int width, int height, float noiseScale)
{
fGI = gi;
fWidth = width;
fHeight = height;
fNoiseScale = noiseScale;
// Create the texture objects that will receive the output
fOutputTexture = new GLTexture2D(GI, width, height, TextureInternalFormat.Rgba, TexturePixelFormat.Bgr, PixelComponentType.Byte, IntPtr.Zero, false);
// Setup the render target that has 3 color channels for Multi Render Target
// output in a shader using gl_FragData[n]
fOutputTarget = new GLRenderTarget(GI);
fOutputTarget.AttachColorBuffer(fOutputTexture, ColorBufferAttachPoint.Position0);
fOutputTarget.Unbind();
// Create the shader program that does the actual separation
fDissolveShader = GLSLShaderProgram.CreateUsingVertexAndFragmentStrings(GI, FixedVert, Dissolve_Frag);
}
/// <summary>
/// This is the easiest constructor to use when you already have a texture, and you
/// want to draw into it. Just pass the texture in, and the RenderTarget will be
/// constructed to match the size.
/// </summary>
/// <param name="gi"></param>
/// <param name="texture"></param>
public GLRenderTarget(GLTexture2D texture)
: this(texture.GI)
{
fWidth = texture.Width;
fHeight = texture.Height;
FrameBuffer.Bind();
// Create the render buffer to be attached as a depth
// buffer.
fDepthBuffer = new GLRenderBuffer(fGI);
fDepthBuffer.Bind();
fDepthBuffer.AllocateStorage(fWidth, fHeight, gl.GL_DEPTH_COMPONENT);
fFrameBuffer.AttachDepthBuffer(fDepthBuffer);
// Create the texture object to be attached as color buffer
AttachColorBuffer(texture, ColorBufferAttachPoint.Position0);
FrameBuffer.Unbind();
}
public YCrCbProcessor(GraphicsInterface gi, int width, int height)
{
fGI = gi;
fWidth = width;
fHeight = height;
// Create the texture objects that will receive the output
fYTexture = new GLTexture2D(GI, width, height, TextureInternalFormat.Luminance, TexturePixelFormat.Luminance, PixelType.Byte, IntPtr.Zero, false);
fCrTexture = new GLTexture2D(GI, width, height, TextureInternalFormat.Luminance, TexturePixelFormat.Luminance, PixelType.Byte, IntPtr.Zero, false);
fCbTexture = new GLTexture2D(GI, width, height, TextureInternalFormat.Luminance, TexturePixelFormat.Luminance, PixelType.Byte, IntPtr.Zero, false);
// Setup the render target that has 3 color channels for Multi Render Target
// output in a shader using gl_FragData[n]
fYCrCbTarget = new GLRenderTarget(GI);
fYCrCbTarget.AttachColorBuffer(fYTexture, ColorBufferAttachPoint.Position0);
fYCrCbTarget.AttachColorBuffer(fCrTexture, ColorBufferAttachPoint.Position1);
fYCrCbTarget.AttachColorBuffer(fCbTexture, ColorBufferAttachPoint.Position2);
fYCrCbTarget.Unbind();
// Create the shader program that does the actual separation
fYCrCbChannelSep = GLSLShaderProgram.CreateUsingVertexAndFragmentStrings(GI, FixedVert, YCrCb_Frag);
}
public void AttachColorBuffer(GLTexture2D colorbuffer, ColorBufferAttachPoint attachPosition)
{
fWidth = colorbuffer.Width;
fHeight = colorbuffer.Height;
Bind();
colorbuffer.Bind();
fFrameBuffer.AttachColorBuffer(colorbuffer, attachPosition);
fColorBuffers.Add(attachPosition, colorbuffer);
}
public virtual void AssignTexture(GLTexture2D aTexture)
{
Bind();
aTexture.Bind();
}
public static void DrawTextureImageUnrotatedAndOrthographically(GraphicsInterface gi, int clientWidth, int clientHeight, GLTexture2D texture,
int drawX, int drawYTextMode, // i.e., 0 == draw TOP of image at TOP of viewport, Y-axis points DOWN
int drawWidth, int drawHeight)
{
// Change rendering conditions
gi.Features.DepthTest.Disable();
gi.Features.CullFace.Disable();
// Preserve current matrices, and switch to an orthographic view, and
// do scaling and translation as necessary.
gi.MatrixMode(MatrixMode.Projection);
gi.PushMatrix();
gi.MatrixMode(MatrixMode.Modelview);
gi.PushMatrix();
gi.MatrixMode(MatrixMode.Projection);
gi.LoadIdentity();
gi.Ortho(0, (clientWidth - 1), 0, (clientHeight - 1), -1.0, 1.0);
gi.MatrixMode(MatrixMode.Modelview);
gi.LoadIdentity();
if (null != texture)
{
// Enable texture
texture.Bind();
}
// Enable blending
gi.Features.Blend.Enable();
gi.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
// Draw a quad
gi.Drawing.Quads.Begin();
// TOP-LEFT
gi.TexCoord(0.0f, 1.0f);
gi.Color(ColorRGBA.White);
gi.Vertex((drawX), ((clientHeight - 1) - drawYTextMode), 0.0f);
// BOTTOM-LEFT
gi.TexCoord(0.0f, 0.0f);
gi.Color(1.0f, 1.0f, 1.0f, 1.0f);
gi.Vertex(drawX, ((clientHeight - 1) - (drawYTextMode + drawHeight)), 0.0f);
// BOTTOM-RIGHT
gi.TexCoord(1.0f, 0.0f);
gi.Color(1.0f, 1.0f, 1.0f, 1.0f);
gi.Vertex((drawX + (drawWidth)), ((clientHeight - 1) - (drawYTextMode + drawHeight)), 0.0f);
// TOP-RIGHT
gi.TexCoord(1.0f, 1.0f);
gi.Color(1.0f, 1.0f, 1.0f, 1.0f);
gi.Vertex((drawX + (drawWidth)), ((clientHeight - 1) - drawYTextMode), 0.0f);
gi.Drawing.Quads.End();
// Disable blending
gi.Features.Blend.Disable();
if (null != texture)
{
// Disable texture
gi.Features.Texturing2D.Disable();
gi.BindTexture(TextureBindTarget.Texture2d, 0);
}
// Restore original matrices.
gi.MatrixMode(MatrixMode.Modelview);
gi.PopMatrix();
gi.MatrixMode(MatrixMode.Projection);
gi.PopMatrix();
// Restore rendering conditions
gi.FrontFace(FrontFaceDirection.Ccw); // MUST DO AFTER USING wglUseFontOutlines LISTS!!!
gi.Features.DepthTest.Enable();
gi.Features.CullFace.Enable();
}
//public bool UpdateTextureWithBitmapData(GraphicsInterface gr, Bitmap bitmap)
//{
// if (null == bitmap)
// {
// return (false);
// }
// bool result;
// if ((fPixelData.Width != bitmap.Width) || (fPixelData.Height != bitmap.Height))
// {
// // Uh, oh! User submitted a bitmap which has dimensions different from the
// // original dimensions! Create a new texture!
// result = CreateTextureFromBitmap(gr, bitmap, fUseMipMaps);
// return (result);
// }
// // Okay, the supplied bitmap is compatible with the current texture dimensions.
// // Copy bitmap data to our already-allocated byte buffer.
// result = GLImage.FillInAllocatedRGBADataWithBitmapData(bitmap, fPixelData.Data);
// if (false == result)
// {
// return (false);
// }
// SubmitModifiedInternalRGBADataToTexture(gr);
// return (true);
//}
//public bool TransferOpenGLTextureDataBackToHostMemoryAndCopyToCompatibleBitmap(GraphicsInterface gr, Bitmap bitmap)
//{
// if (null == fPixelData.Data)
// {
// return (false);
// }
// TransferTextureDataBackToHostMemory(gr);
// if (null == bitmap)
// {
// return (false);
// }
// if ((fPixelData.Width != bitmap.Width) || (fPixelData.Height != bitmap.Height))
// {
// // Uh, oh! User submitted a bitmap which has dimensions different from the
// // texture dimensions! Give up!
// return (false);
// }
// bool result = GLImage.CopyRGBABufferToCompatibleBitmap(fPixelData.Data, bitmap);
// return (result);
//}
//public void SubmitModifiedInternalRGBADataToTexture(GraphicsInterface gr)
//{
// if (null == fPixelData.Data)
// {
// return;
// }
// // Make sure total bytes matches RGBA * width * height.
// int totalBytes = ((4 * fPixelData.Width) * fPixelData.Height);
// if (totalBytes != fPixelData.Data.Length)
// {
// return;
// }
// gl.glBindTexture(gl.GL_TEXTURE_2D, fTextureID);
// if (fUseMipMaps)
// {
// // Will this work?
// //glu.gluBuild2DMipmaps
// //(
// // gl.GL_TEXTURE_2D, // target
// // gl.GL_RGBA, // internalFormat
// // fWidth, // width
// // fHeight, // height
// // gl.GL_RGBA, // format
// // gl.GL_UNSIGNED_BYTE, // type
// // fRGBAData // data
// //);
// }
// else
// {
// gl.glTexSubImage2D
// (
// gl.GL_TEXTURE_2D, // target
// 0, // level
// 0, // xoffset
// 0, // yoffset
// fPixelData.Width, // width
// fPixelData.Height, // height
// gl.GL_RGBA, // format
// gl.GL_UNSIGNED_BYTE, // type
// fPixelData.Data // pixels
// );
// }
//}
#endregion
#region Static Methods
public static GLTexture2D CreateTextureFromPixelData(GraphicsInterface gi, GLPixelData pixeldata, bool createMipMaps)
{
GLTexture2D tex = new GLTexture2D(gi, pixeldata, createMipMaps);
return tex;
}
//public void TransferTextureDataBackToHostMemory(GraphicsInterface gr)
//{
// if (null == RGBAData)
// {
// return;
// }
// try
// {
// gl.glGetTexImage
// (
// gl.GL_TEXTURE_2D, // target
// 0, // level (0 == top-most mip-map level)
// gl.GL_RGBA, // internalFormat
// gl.GL_UNSIGNED_BYTE, // type
// RGBAData // data
// );
// }
// catch
// {
// }
//}
public static GLTexture2D CreateCheckerboardTexture(GraphicsInterface gi, int width, int height, int blockSize)
{
int totalBytes = ((width * 4) * height);
byte[] databytes = new byte[totalBytes];
//bool useMipMaps = true;
int x = 0;
int y = 0;
int k = 0;
byte val = 0;
for (y = 0; y < height; y++)
{
for (x = 0; x < width; x++)
{
k = ((width * 4) * y) + (x * 4);
val = 0;
if (0 == (((x / blockSize) + (y / blockSize)) % 2))
val = 255;
databytes[k + 0] = val; // red
databytes[k + 1] = val; // green
databytes[k + 2] = val; // blue
databytes[k + 3] = 255; // opacity (255 == opaque)
}
}
GLPixelData pixMap = new GLPixelData(width, height, TextureInternalFormat.Rgba8, PixelLayout.Rgba, PixelComponentType.UnsignedByte, databytes);
GLTexture2D tex = new GLTexture2D(gi, pixMap, false);
//GCHandle data_ptr = GCHandle.Alloc(databytes, GCHandleType.Pinned);
//IntPtr fDataPtr = (IntPtr)data_ptr.AddrOfPinnedObject();
//GLTexture2D tex = new GLTexture2D(gi, width, height, TextureInternalFormat.Rgba8, TexturePixelFormat.Rgba, PixelComponentType.UnsignedByte, fDataPtr, false);
//data_ptr.Free();
return tex;
}
/// <summary>
/// This is called by the rendering system automatically.
///
/// We want to do the channel separation, and then the drawing
/// of the quads.
/// </summary>
protected override void DrawContent()
{
GLTexture finalImage = null;
//GLTexture finalImage = fCamera1;
finalImage = fGrayConverter.ProcessTexture(fCamera1);
// GLTexture grayImage = fGrayConverter.ProcessTexture(fCamera1);
//GLTexture finalImage = fPixellate.ProcessTexture(fCamera1);
//GLTexture finalImage = fGammaCorrection.ProcessTexture(processedImge);
//GLTexture finalImage = fLuminanceThreshold.ProcessTexture(fGrayConverter.ProcessTexture(fCamera1));
//GLTexture finalImage = fLuminanceBinarizer.ProcessTexture(fCamera1);
//GLTexture finalImage = fLuminanceThreshold.ProcessTexture(fCamera1);
//GLTexture finalImage = fEdgeEnhance.ProcessTexture(fCamera1);
//GLTexture finalImage = fGrayConverter.ProcessTexture(fEdgeEnhance.ProcessTexture(fCamera1));
//GLTexture finalImage = fSobell.ProcessTexture(fSoften.ProcessTexture(fGrayConverter.ProcessTexture(fCamera1)));
finalImage = fSobell.ProcessTexture(fGrayConverter.ProcessTexture(fCamera1)); // Scary
//GLTexture finalImage = fSobell.ProcessTexture(fCamera1); // Scary
//GLTexture finalImage = fLuminanceThreshold.ProcessTexture(fPixellate.ProcessTexture(fCamera1));
//GLTexture finalImage = fPixellate.ProcessTexture(fGrayConverter.ProcessTexture(fCamera1));
//GLTexture finalImage = fSoften.ProcessTexture(fCamera1);
//GLTexture finalImage = fLaplacian.ProcessTexture(fGrayConverter.ProcessTexture(fCamera1));
//GLTexture finalImage = fBlocker.ProcessTexture(fCamera1);
// Get 30 snapshots before proceeding so we don't start from
// a blank image.
if (null == fBackgroundFrame)
{
fBackgroundCount++;
if (fBackgroundCount < 30)
return;
fBackgroundFrame = fBackgroundCopier.ProcessTexture(fCamera1);
}
//DoMorph();
//// Get the current image from the camera
//finalImage = fSobell.ProcessTexture(fPixellate.ProcessTexture(fGrayConverter.ProcessTexture(fCamera1)));
//finalImage = fDifference.ProcessTwoTextures(fBackgroundFrame, fCamera1);
fGrayMesh.Texture = finalImage;
fGrayMesh.Render(GI);
//fPointMesh.Texture = fCamera1;
//fPointMesh.Render(GI);
}
/// <summary>
/// Perform Color separation in one pass. There are a total of 4 texture
/// objects involved, a RenderTarget, and fragment shader.
///
/// The source texture, is assumed to be the video texture. That is what
/// will be rendered as a quad into the RenderTarget.
///
/// The Y, Cr, and Cb textures have been attached to the color buffer attachment
/// points of the RenderTarget.
///
/// The shader program simply takes the source fragment, and performs the
/// Y, Cr, Cb separation calculations and places the output into the appropriate
/// color buffers.
///
/// And the end, the Y, Cr, Cb texture objects contain the results.
///
/// All done in one pass, using a shader program, in the time that it takes to
/// render a single quad into an offscreen buffer.
/// </summary>
public void SeparateChannels(GLTexture2D currentTexture)
{
GLSLShaderProgram currentProgram = fYCrCbChannelSep;
GLRenderTarget currentTarget = fYCrCbTarget;
int[] buffers = { gl.GL_COLOR_ATTACHMENT0_EXT,
gl.GL_COLOR_ATTACHMENT1_EXT,
gl.GL_COLOR_ATTACHMENT2_EXT};
// First draw the current texture into an offscreen buffer
// just so we can do the color separation.
currentTarget.Bind();
{
GI.DrawBuffers(3, buffers);
GI.Features.Texturing2D.Enable();
// We want replace mode because we don't care about
// the values that are currently in place, we just want
// to replace them.
GI.TexEnv(TextureEnvModeParam.Replace);
// Set the viewport to be the whole texture
GI.Viewport(0, 0, currentTexture.Width, currentTexture.Height);
GI.MatrixMode(MatrixMode.Projection);
GI.LoadIdentity();
GI.Ortho(0, currentTexture.Width, 0, currentTexture.Height, -1.0, 1.0);
//GI.FrontFace(FrontFaceDirection.Cw);
// The current program is the channel separation program. it will change
// depending on which channel we are currently separating.
currentProgram.Bind();
{
// We want to turn off filtering. We do that by using 'nearest'
// we also clamp the coordinates instead of replicating at the edges
currentTexture.Bind();
GI.TexParameter(TextureParameterTarget.Texture2d, TextureParameterName.TextureMinFilter, TextureMinFilter.Nearest);
GI.TexParameter(TextureParameterTarget.Texture2d, TextureParameterName.TextureMagFilter, TextureMagFilter.Nearest);
GI.TexParameter(TextureParameterTarget.Texture2d, TextureParameterName.TextureWrapS, TextureWrapMode.Clamp);
GI.TexParameter(TextureParameterTarget.Texture2d, TextureParameterName.TextureWrapT, TextureWrapMode.Clamp);
currentProgram["tex0"].Set((int)0);
GI.Drawing.Quads.Begin();
{
float left = 0;
float bottom = 0;
float right = currentTexture.Width;
float top = currentTexture.Height;
// Left bottom
GI.TexCoord(0.0f, 0.0f);
GI.Vertex(left, bottom, 0.0f);
// Left top
GI.TexCoord(0.0f, 1.0f);
GI.Vertex(left, top, 0.0f);
// Right top
GI.TexCoord(1.0f, 1.0f);
GI.Vertex(right, top, 0.0f);
// Right bottom
GI.TexCoord(1.0f, 0.0f);
GI.Vertex(right, bottom, 0.0f);
}
GI.Drawing.Quads.End();
currentTexture.Unbind();
}
currentProgram.Unbind();
}
currentTarget.Unbind();
}
public void Attach1DTexture(ColorBufferAttachPoint attachType, GLTexture2D tex)
{
GI.FramebufferTexture1D(gl.GL_FRAMEBUFFER_EXT, attachType, gl.GL_TEXTURE_1D, (int)tex.TextureID, 0);
}
public void AttachColorBuffer(GLTexture2D colorbuffer, ColorBufferAttachPoint attachPosition)
{
GI.FramebufferTexture2D(gl.GL_FRAMEBUFFER_EXT, attachPosition, gl.GL_TEXTURE_2D, (int)colorbuffer.TextureID, 0);
}
public void Attach3DTexture(GLTexture2D tex)
{
GI.FramebufferTexture3D(gl.GL_FRAMEBUFFER_EXT, ColorBufferAttachPoint.Position0, gl.GL_TEXTURE_3D, (int)tex.TextureID, 0, 0);
}
public void Attach3DTexture(GLTexture2D tex, ColorBufferAttachPoint attachType)
{
GI.FramebufferTexture3D(gl.GL_FRAMEBUFFER_EXT, attachType, gl.GL_TEXTURE_3D, (int)tex.TextureID, 0, 0);
}
public void Attach3DTexture(GLTexture2D tex, ColorBufferAttachPoint attachType, int mipLevel, int zOffset)
{
GI.FramebufferTexture3D(gl.GL_FRAMEBUFFER_EXT, attachType, gl.GL_TEXTURE_3D, (int)tex.TextureID, mipLevel, zOffset);
}
public void Attach2DTexture(ColorBufferAttachPoint attachType, GLTexture2D tex, int mipLevel)
{
GI.FramebufferTexture2D(gl.GL_FRAMEBUFFER_EXT, attachType, gl.GL_TEXTURE_2D, (int)tex.TextureID, mipLevel);
}
/// <summary>
/// Create a render target with the specified width and height in pixels.
/// A color buffer and depth buffer will be attached.
/// </summary>
/// <param name="gi">The graphics interface used to construct the components.</param>
/// <param name="width">The width of the RenderTarget in pixels.</param>
/// <param name="height">The height of the RenderTarget in pixels.</param>
public GLRenderTarget(GraphicsInterface gi, int width, int height)
: this(gi)
{
fGI = gi;
fWidth = width;
fHeight = height;
FrameBuffer.Bind();
CreateDepthBuffer(width, height);
// Create the texture object to be attached as color buffer
GLTexture2D colorbuffer = new GLTexture2D(fGI, width, height);
AttachColorBuffer(colorbuffer, ColorBufferAttachPoint.Position0);
FrameBuffer.Unbind();
}
/// <summary>
/// Perform a dissolve between a 'base' image and a 'blend' image.
/// </summary>
/// <param name="currentTexture"></param>
public void ProcessImages(GLTexture2D baseImage, GLTexture2D blendImage, float opacity)
{
GI.Features.Texturing2D.Enable();
// Bind the inputs to the texture units
GLTextureUnit baseUnit = GLTextureUnit.GetTextureUnit(fGI, TextureUnitID.Unit1);
GLTextureUnit blendUnit = GLTextureUnit.GetTextureUnit(fGI, TextureUnitID.Unit2);
baseUnit.AssignTexture(baseImage);
blendUnit.AssignTexture(blendImage);
//blendUnit.Unbind();
// We want replace mode because we don't care about
// the values that are currently in place, we just want
// to replace them.
GI.TexEnv(TextureEnvModeParam.Replace);
// Set the viewport to be the whole texture
GI.Viewport(0, 0, fWidth, fHeight);
GI.MatrixMode(MatrixMode.Projection);
GI.LoadIdentity();
GI.Ortho(0, fWidth, 0, fHeight, -1.0, 1.0);
//GI.FrontFace(FrontFaceDirection.Cw);
// The current program is the channel separation program. it will change
// depending on which channel we are currently separating.
Program.Bind();
{
// set the program's input textures
Program["Base"].Set((int)baseUnit.OrdinalForShaders);
Program["Blend"].Set((int)blendUnit.OrdinalForShaders);
//Program["NoiseScale"].Set((float)fNoiseScale);
Program["Opacity"].Set((float)opacity);
// We want to turn off filtering. We do that by using 'nearest'
// we also clamp the coordinates instead of replicating at the edges
GI.Features.Texturing2D.Enable();
//blendImage.Bind();
//GI.TexParameter(TextureParameterTarget.Texture2d, TextureParameterName.TextureMinFilter, TextureMinFilter.Linear);
//GI.TexParameter(TextureParameterTarget.Texture2d, TextureParameterName.TextureMagFilter, TextureMagFilter.Linear);
//GI.TexParameter(TextureParameterTarget.Texture2d, TextureParameterName.TextureWrapS, TextureWrapMode.Clamp);
//GI.TexParameter(TextureParameterTarget.Texture2d, TextureParameterName.TextureWrapT, TextureWrapMode.Clamp);
GI.Drawing.Quads.Begin();
{
float left = 0;
float bottom = 0;
float right = blendImage.Width;
float top = blendImage.Height;
// Left bottom
GI.TexCoord(0.0f, 0.0f);
GI.Vertex(left, bottom, 0.0f);
// Left top
GI.TexCoord(0.0f, 1.0f);
GI.Vertex(left, top, 0.0f);
// Right top
GI.TexCoord(1.0f, 1.0f);
GI.Vertex(right, top, 0.0f);
// Right bottom
GI.TexCoord(1.0f, 0.0f);
GI.Vertex(right, bottom, 0.0f);
}
GI.Drawing.Quads.End();
//blendImage.Unbind();
}
Program.Unbind();
}
