mirror of
https://github.com/opencv/opencv.git
synced 2024-12-05 17:59:13 +08:00
bd4239be7b
added GlBuffer, GlTexture and GpuMat support to InputArray replaced addTextOpenGl function by render + GlFont
136 lines
3.1 KiB
C++
136 lines
3.1 KiB
C++
#include <iostream>
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#include <string>
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#include "opencv2/core/core.hpp"
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#include "opencv2/core/gpumat.hpp"
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#include "opencv2/core/opengl_interop.hpp"
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#include "opencv2/gpu/gpu.hpp"
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#include "opencv2/highgui/highgui.hpp"
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#include "opencv2/contrib/contrib.hpp"
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using namespace std;
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using namespace cv;
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using namespace cv::gpu;
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struct Timer
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{
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Timer(const string& msg_)
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{
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msg = msg_;
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tm.reset();
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tm.start();
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}
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~Timer()
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{
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tm.stop();
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cout << msg << " " << tm.getTimeMilli() << " ms\n";
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}
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string msg;
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TickMeter tm;
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};
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int main(int argc, char* argv[])
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{
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if (argc < 2)
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{
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cout << "Usage: " << argv[0] << " image" << endl;
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return -1;
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}
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try
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{
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bool haveCuda = getCudaEnabledDeviceCount() > 0;
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const string openGlMatWnd = "OpenGL Mat";
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const string openGlBufferWnd = "OpenGL GlBuffer";
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const string openGlTextureWnd = "OpenGL GlTexture";
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const string openGlGpuMatWnd = "OpenGL GpuMat";
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const string matWnd = "Mat";
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namedWindow(openGlMatWnd, WINDOW_OPENGL | WINDOW_AUTOSIZE);
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namedWindow(openGlBufferWnd, WINDOW_OPENGL | WINDOW_AUTOSIZE);
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namedWindow(openGlTextureWnd, WINDOW_OPENGL | WINDOW_AUTOSIZE);
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if (haveCuda)
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namedWindow(openGlGpuMatWnd, WINDOW_OPENGL | WINDOW_AUTOSIZE);
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namedWindow("Mat", WINDOW_AUTOSIZE);
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Mat img = imread(argv[1]);
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if (haveCuda)
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setGlDevice();
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setOpenGlContext(openGlBufferWnd);
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GlBuffer buf(img, GlBuffer::TEXTURE_BUFFER);
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setOpenGlContext(openGlTextureWnd);
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GlTexture tex(img);
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GpuMat d_img;
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if (haveCuda)
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d_img.upload(img);
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cout << "=== First call\n\n";
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{
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Timer t("OpenGL Mat ");
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imshow(openGlMatWnd, img);
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}
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{
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Timer t("OpenGL GlBuffer ");
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imshow(openGlBufferWnd, buf);
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}
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{
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Timer t("OpenGL GlTexture");
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imshow(openGlTextureWnd, tex);
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}
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if (haveCuda)
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{
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Timer t("OpenGL GpuMat ");
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imshow(openGlGpuMatWnd, d_img);
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}
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{
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Timer t("Mat ");
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imshow(matWnd, img);
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}
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waitKey();
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cout << "\n=== Second call\n\n";
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{
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Timer t("OpenGL Mat ");
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imshow(openGlMatWnd, img);
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}
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{
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Timer t("OpenGL GlBuffer ");
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imshow(openGlBufferWnd, buf);
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}
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{
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Timer t("OpenGL GlTexture");
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imshow(openGlTextureWnd, tex);
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}
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if (haveCuda)
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{
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Timer t("OpenGL GpuMat ");
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imshow(openGlGpuMatWnd, d_img);
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}
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{
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Timer t("Mat ");
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imshow(matWnd, img);
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}
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cout << "\n";
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waitKey();
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}
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catch(const exception& e)
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{
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cout << e.what() << endl;
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}
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return 0;
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}
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