documented all functions from GPU initialization section

doc/gpu.tex

@@ -1,27 +1,3 @@
-\ifCpp
-
-
-\section{Initalization and Info}
-
-
-\cvCppFunc{gpu::hasNativeDoubleSupport}
-Returns true if current GPU has native double support, false otherwise.
-
-\cvdefCpp{bool hasNativeDoubleSupport(int device);}
-\begin{description}
-\cvarg{device}{GPU identity. Can be obtained via \cvCppCross{gpu::getDevice}.}
-\end{description}
-
-
-\cvCppFunc{gpu::hasAtomicsSupport}
-Returns true if current GPU has atomics support, false otherwise.
-
-\cvdefCpp{bool hasAtomicsSupport(int device);}
-\begin{description}
-\cvarg{device}{GPU identity. Can be obtained via \cvCppCross{gpu::getDevice}.}
-\end{description}
-
-
 \section{Data Structures}
 
 
@@ -821,5 +797,3 @@ Returns block descriptors computed for the whole image.
     \cvarg{DESCR\_FORMAT\_COL\_BY\_COL}{Column-major order.}
 \end{description}}
 \end{description}
-
-\fi

doc/gpu_initialization.tex

@@ -0,0 +1,69 @@
+\section{Initalization and Information}
+
+
+\cvCppFunc{gpu::getCudaEnabledDeviceCount}
+Returns number of CUDA-enabled devices installed. It is to be used before any other GPU funtions calls. If OpenCV is compiled without GPU support this function returns 0. 
+
+\cvdefCpp{int getCudaEnabledDeviceCount();}
+
+
+\cvCppFunc{gpu::setDevice}
+Sets device and initializes it for current thread. If this call is omitted, default device will be initialized.
+
+\cvdefCpp{void setDevice(int device);}
+\begin{description}
+\cvarg{device}{index of GPU device in system starting with 0.}
+\end{description}
+
+
+\cvCppFunc{gpu::getDevice}
+Returns current device index, which was set by \cvCppCross{gpu::getDevice} of initialized by default.
+
+\cvdefCpp{int getDevice();}
+
+
+\cvCppFunc{gpu::getComputeCapability}
+Returns compute capability version for given device.
+
+\cvdefCpp{void getComputeCapability(int device, int\& major, int\& minor);}
+\begin{description}
+\cvarg{device}{GPU index. Can be obtained via \cvCppCross{gpu::getDevice}.}
+\cvarg{major}{Major CC version.}
+\cvarg{minor}{Minor CC version.}
+\end{description}
+
+\cvCppFunc{gpu::getNumberOfSMs}
+Returns number of Streaming Multiprocessors for given device.
+
+\cvdefCpp{int getNumberOfSMs(int device);}
+\begin{description}
+\cvarg{device}{GPU index. Can be obtained via \cvCppCross{gpu::getDevice}.}
+\end{description}
+
+
+\cvCppFunc{gpu::getGpuMemInfo}
+Returns free and total memory for current device.
+
+\cvdefCpp{void getGpuMemInfo(size\_t\& free, size\_t\& total);}
+\begin{description}
+\cvarg{free}{Reference to free GPU memory counter.}
+\cvarg{total}{Reference to total GPU memory counter.}
+\end{description}
+
+
+\cvCppFunc{gpu::hasNativeDoubleSupport}
+Returns true if current GPU has native double support, false otherwise.
+
+\cvdefCpp{bool hasNativeDoubleSupport(int device);}
+\begin{description}
+\cvarg{device}{GPU index. Can be obtained via \cvCppCross{gpu::getDevice}.}
+\end{description}
+
+
+\cvCppFunc{gpu::hasAtomicsSupport}
+Returns true if current GPU has atomics support, false otherwise.
+
+\cvdefCpp{bool hasAtomicsSupport(int device);}
+\begin{description}
+\cvarg{device}{GPU index. Can be obtained via \cvCppCross{gpu::getDevice}.}
+\end{description} 

doc/gpu_introduction.tex

@@ -0,0 +1,3 @@
+
+\setction{ABC}
+GPU INTRODUTION

doc/opencvref_body.tex

@@ -62,7 +62,14 @@
 \ifCpp
 \chapter{gpu. GPU-based Functionality}
 \renewcommand{\curModule}{gpu}
+%\input{gpu_introduction}
+\input{gpu_initialization}
 \input{gpu}
+%\input{gpu_datastructures}
+%\input{gpu_matrixoperations}
+%\input{gpu_imageproc}
+%\input{gpu_matrixreductions}
+%\input{gpu_objectdetection}
 \input{gpu_features2d}
 \input{gpu_image_filtering}
 \fi