begone fps

(1) change the color cache from 32-bit to 16-bit in the program, and check whether the FPS value is increased to determine whether the bottleneck is caused by the real frame cache bandwidth. (2) press Ctrl + T in nvperfhud to forcibly set the texture to 2*2 and check whether the FPS value is increased to determine whether the bottleneck is caused by the texture bandwidth. (3) press Ctrl + 1, CTRL + 2… In

File: vgaspeed.txtName: test the speed of the vga12h ModeAuthor: zyl910Blog: http://blog.csdn.net/zyl910/Version: V1.0Updata: 2006-11-14 Download (note the modified extension) Introduction~~~~I 've written a lot of screen writing code in DOS, but I never thought of a problem-there are multiple VGA operating speeds. Therefore, I wrote a small program to test the VGA speed.Graphics Mode: VGA 12 h, 640*480*16 colors.Three test items:1. Read test. The VGA read mode 0 is used to copy the video memory

, it can only reach 15 FPS (15 frames per second. But sometimes this problem is a bit contradictory, as we all know that for video chats, even in a broadband environment, the specific speed is more affected by the network environment and network speed, due to the domestic network environment, it is difficult to get 25 frames per second at a resolution of 320*240 or even lower. It is also lucky to reach 15 frames per second (15 frames per second is bas

I guess it may be that Sleep (0) is used in the main loop, and the specific code is found. It is located in cocos2dx \ platform \ win32 \ CCApplication. cpp, and its length is roughly as follows: 1 while( 1 ) { 2 if(With messages ){ 3 if(Time to) Update timing, call the main cyclic function; 4 elseSleep(0); 5 } 6 // Other code that jumps out of the loop 7 } That is to sa

smokeitem {// Each item has a reference to the next item so it can// Be started after a certain time or in this case when the item // reaches a certain point.Private smokeitem next = NULL; Private int [] Point = {0, 0, 0}; // position of the spritePrivate int [] texture = {10, 10,512, 0, 0,128,128,Graphics3d. point_sprite_perspective };Private int rot; // the rotation of the Point Sprite,// This is randomized// W0, H0, A0, x00, y00, x01, Y01, F0,// W1, H1, A1, x10, Y10, X11, y11, F1 ,... Privat

. threed. jpct. object3d; import COM. threed. jpct. primitives; import COM. threed. jpct. rgbcolor; import COM. threed. jpct. simplevector; import COM. threed. jpct. texture; import COM. threed. jpct. textureinfo; import COM. threed. jpct. texturemanager; import COM. threed. jpct. world; import COM. threed. jpct. util. memoryhelper;/*** a comprehensive example containing 3DS, md2 import and texture *** @ author SIMD Anfeg **/public class myrenderer implements Renderer {// circumference rate Priv

generally in the 85Hz, the video card will be each in accordance with the 85Hz frequency time to send a vertical synchronization signal, signal and signal time interval is 85 of the resolution to write a screen image time.Open Vertical Sync: In the game, perhaps a strong graphics card quickly finished drawing a screen image, but there is no vertical synchronization of the arrival of the signal, the video card can not draw the next screen, only 85 units of the signal to arrive, to be drawn. This

问题：为何视频能读出来，而写入代码也没报错，但文件大小为0k，视频好似没有写入成功！原因：cv2.VideoWriter()a second parameter controls Video Encoding format, which is written in most tutorialsVideowriter = Cv2. Videowriter (' Out.mp4 ', Cv2.cv.CV_FOURCC (' M ', ' J ', ' P ', ' G '), FPS, size)OrVideowriter = Cv2. Videowriter (' Out.avi ', Cv2.cv.CV_FOURCC (' I ', ' 4 ', ' 2 ', ' 0 '), fps, size)The actual runtime generated video size of 0k, the reason

Basic technology: There are many ways to implement animations in Java, but they do the same thing, by drawing a series of frames on the screen to create a sense of motion. We first construct a program framework, and then slowly expand, so that the function is more complete. To use a thread: To update the screen more than once per second, you must create a thread to implement the animation loop, which tracks the current frame and responds to periodic screen update requirements. There are two

second request will be executed to the back of the check found that the heavy will be rolled back. In fact, MySQL transactions in the guarantee of data consistency is very OK, but by rolling back to ensure that the only resource exclusive cost too much, do the MySQL transaction testing students know that the transaction in the insert is already inserted, rollback after the deletion.Scenario 2: There is another option is the file exclusive lock in PHP, that is to say that I want to create a new

side of the combination. 3. Under what circumstances use the index(1) For the search word Jianjian index, if in your table, a field you often use to do the search, then, please set up the index bar. In general, columns that appear in a where and join need to be indexed to improve query speed.For example, the person whose name is "Li Wu" is retrieved from the FPS table (the Name field in the table),The following explain is used to explain the differ

move to" a position, so need to move it step by step, let it appear to be rolled over ... Because I'm going to run for a while, there is also no a lot of points need to explain, I will directly on the code to everyone to see, notes are written, the main points will be a separate mention, more detailed explanation and experience will be waiting for me the day of the drop down to realize it. Copy Code code as follows: /** * @desc Smooth Scrolling * @param v need to manipulate the

CMOS Parallel Sensor some basic knowledge 1S seconds = ms milliseconds = 1000_1000 US subtle = 1000_000_000 NS nanoseconds 1GHz = + MHz = 1000_000 KHz = 1000_000_000 Hz The exposure time is in the president's unit; PCLK is in Hz; The president takes the number of cycles, and the length of the frame is in the number of Presidents; The T cycle is in MS, and F frequency is in Hz; f = 1/t; period and frequency are time units, but different forms of expression Vsync = Dummy line = Vtotal = VTS = v_si

to refresh the tester. When the tester tests itself, the frame rate shown should be the same as the preset value. Design steps: 1. Open Flash MX, set the scene size to 350pxx100px, background color is "#0E6A99" (in fact, the setting of the scene is irrelevant). Press the shortcut key "Ctrl+f8" to create a new movie clip symbol named "fps." 2. Click the Text tool in the Select tool panel in the scene of the symbol "

int up_zero=30; The ball in the ascent process, the speed is less than the value even if 0 public static final int down_zero=60; When the ball hits the ground, the speed is less than the value of 0 bitmap[] Bitmaparray =new bitmap[6]; Bitmap Bmpback; Background picture Bitmap Bmpwood; Bezel picture String fps= "fps:n/a"; string int ballnumber = 8 to display the frame rate; Ball number arraylist Because the pictures in the Bitmaparray array are o

, but he needs to install the Ruby environment, and there may be unexpected errors during the installation of the REDIS-DUMP environment. So we have to choose other methods. A moment is a few ideas for reference. 1, data export, do not write their own, and do not use third-party scripts,echo "Hgetall xxx" | redis-cli-h localhost-p 6379echo "Hgetall xxx" | redis-cli-h localhost-p 6379 >> wordlist.raw2. So get the result that you can go up to the server to view the Wordlist.raw file3. Organize the

1. Init_videoin function int Init_videoin (struct Vdin *vd, char *device, int width, int height, int fps, int format, int grabmethod){ Various parameters to determine (whether the device node is empty, the resolution is 0, if not meet the requirements, direct return)if (VD = = NULL | | device = = NULL)return-1;if (width = = 0 | | height = = 0)return-1;if (Grabmethod Grabmethod = 1;//mmap by default;/* Re-set each member of the Vdin struct */Vd->videod

(); try{ yuvimage image = new Yuvimage (data, imageformat.nv21, size.width, size.height, null); if (image!=null) { Bytearrayoutputstream stream = new Bytearrayoutputstream (); Image.compresstojpeg (New Rect (0, 0, Size.width, size.height), N, stream); Bitmap bmp = Bitmapfactory.decodebytearray (Stream.tobytearray (), 0, Stream.size ()); Stream.Close (); } } catch (Exception ex) {

Recently, I have studied the real-time video network transmission problem of Android. I have spent a lot of effort on video processing. I have summarized the following five solutions and compared them. Take video transmission of 320x240 as an Example Solution Compression rate Compression/Transmission Mode Real-time Average Traffic consumption Transmission Distance Use the callback function of camera to send the original yuv420 data. 0 No compression, frame

* oldbytesperline + XX * format;RGB. rgbred = * PTR ++;RGB. rgbgreen = * PTR ++;RGB. rgbblue = * PTR; RR + = RGB. rgbred * R2;Gg + = RGB. rgbgreen * R2;BB + = RGB. rgbblue * R2;}} PTR = newimage + y * newbytesperline + x * format;* PTR ++ = (unsigned char) RR;* PTR ++ = (unsigned char) GG;* PTR = (unsigned char) BB; }} Return 0;} Float kernelbspline (const float X){If (x> 2.0f) return 0.0f;// Thanks to Kristian kratzensteinFloat a, B, c, d;Float xm1 = x-1.0f; // was calculatet anyway cause th