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Commit d1e8ce2e authored by Gaurav Kukreja's avatar Gaurav Kukreja
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Final Presentation with OpenGL interop 

Signed-off-by: 's avatarGaurav Kukreja <gmkukreja@gmail.com>
parent 1f67342c
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FinalPresentation/segmentation.aux
View file @ d1e8ce2e
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FinalPresentation/segmentation.log
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This is pdfTeX, Version 3.1415926-2.5-1.40.14 (TeX Live 2013/Debian) (format=pdflatex 2013.12.8) 3 APR 2014 00:41
This is pdfTeX, Version 3.1415926-2.5-1.40.14 (TeX Live 2013/Debian) (format=pdflatex 2013.12.8) 3 APR 2014 00:51
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FinalPresentation/segmentation.nav
View file @ d1e8ce2e
......@@ -11,26 +11,45 @@
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FinalPresentation/segmentation.out
View file @ d1e8ce2e
\BOOKMARK [2][]{Outline0.1}{Introduction}{}% 1
\BOOKMARK [2][]{Outline0.2}{Algorithm}{}% 2
\BOOKMARK [2][]{Outline0.3}{CUDA Implementation}{}% 3
\BOOKMARK [2][]{Outline0.4}{Optimizations}{}% 4
\BOOKMARK [3][]{Outline0.4.1.4}{Texture Memory}{Outline0.4}% 5
\BOOKMARK [3][]{Outline0.4.2.4}{OpenGL Interoperability}{Outline0.4}% 6
\BOOKMARK [3][]{Outline0.2.1.4}{Binary Image Segmentation}{Outline0.2}% 3
\BOOKMARK [3][]{Outline0.2.2.6}{Grayscale Image Segmentation}{Outline0.2}% 4
\BOOKMARK [3][]{Outline0.2.3.8}{Primal-Dual Method}{Outline0.2}% 5
\BOOKMARK [2][]{Outline0.3}{CUDA Implementation}{}% 6
\BOOKMARK [2][]{Outline0.4}{Optimizations}{}% 7
\BOOKMARK [3][]{Outline0.4.1.10}{Texture Memory}{Outline0.4}% 8
\BOOKMARK [3][]{Outline0.4.2.11}{OpenGL Interoperability}{Outline0.4}% 9
FinalPresentation/segmentation.tex
View file @ d1e8ce2e
......@@ -271,8 +271,24 @@ What is Interoperability?
\begin{lstlisting}
cudaGraphicsMapResources(1, &pixels_CUDA, 0);
cudaGraphicsResourceGetMappedPointer(&d_pixels, &size, pixels_CUDA);
\end{lstlisting}
\item Pass CUDA pointer as parameter for kernel. The kernel writes to the buffer in \textbf{RGBA8} format.
\item After kernel execution, unmap pixel buffer.
\begin{lstlisting}
cudaGraphicsUnmapResources(1, &pixels_CUDA, 0);
\end{lstlisting}
\item Draw buffer
\begin{lstlisting}
glDrawPixels(w, h, GL_RGBA, GL_UNSIGNED_BYTE, 0);
\end{lstlisting}
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{Challenges for OpenGL Interop}
\begin{itemize}
\item Converting float representation of gray scale pixel data in kernel, to unsigned four channel RGBA exected by OpenGL.
\item Using OpenGL interop with Qt for making GUI.
\end{itemize}
\end{frame}
......
FinalPresentation/segmentation.toc
View file @ d1e8ce2e
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\beamer@subsectionintoc {4}{2}{OpenGL Interoperability}{4}{0}{4}
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\beamer@subsectionintoc {4}{2}{OpenGL Interoperability}{11}{0}{4}
FinalPresentation/segmentation.vrb
View file @ d1e8ce2e
......@@ -4,6 +4,14 @@
\begin{lstlisting}
cudaGraphicsMapResources(1, &pixels_CUDA, 0);
cudaGraphicsResourceGetMappedPointer(&d_pixels, &size, pixels_CUDA);
\end{lstlisting}
\item Pass CUDA pointer as parameter for kernel. The kernel writes to the buffer in \textbf{RGBA8} format.
\item After kernel execution, unmap pixel buffer.
\begin{lstlisting}
cudaGraphicsUnmapResources(1, &pixels_CUDA, 0);
\end{lstlisting}
\item Draw buffer
\begin{lstlisting}
glDrawPixels(w, h, GL_RGBA, GL_UNSIGNED_BYTE, 0);
\end{lstlisting}
\end{itemize}
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