Tags: SDL OpenGL direct3d texture function call
The previous article analyzed the texture creation function sdl_createtexture () of SDL (). This article continues to analyze the source code of SDL. This article analyzes the sdl_updatetexture () function of SDL to update texture data ().
The code process for playing a video by using SDL is as follows.
Initialization:
Sdl_init (): Initialize SDL.
Sdl_createwindow (): create a window ).
Sdl_createrenderer (): Creates a
Environment: SDL2 + vc++2015The following code will open Background.bmp and image.bmp, tile the background background, and render the image as a foreground1#include 2#include"SDL.h"3 4 //Screen Width5 Const intScreen_width =640;6 Const intScreen_height =480;7 8 //Global window and renderer9Sdl_window *window =nullptr;TenSdl_renderer *renderer =nullptr; One A //Loading Pictures -sdl_texture* LoadImage (std::stringfile) - { theSdl_surface *loadedimage
I made a real-time display of the achartengine curve two days ago and learned some basic achartengine usage. Now I will record the xymultipleseriesrenderer style attribute description and share it with you.
Xymultipleseriesrenderer Renderer = new xymultipleseriesrenderer (); Renderer. setcharttitle (depid + "Room No." + Type + "real-time curve"); // Title Renderer
://code.google.com/p/zxing/ZXing port, the new version will have better performance.
The test results are as follows (microseconds):
Input string Length: 74
EC Performance 1000 tests~ qrcode.net:3929 zxing:5221
At the same time, Qrcode.net can parse the string to determine whether to use UTF-8 encoding. (for example, when using Chinese.) )
QRCode Use Method:
New project adds a reference to the class library, and then introduces the Gma.QrCodeNet.Encoding namespace.
Using Gma.QrCodeNet.Enc
indirectly receive the parameters you have sent, but receives the array of font identifiers and x/y positions.Raster and Cache
Each draw call of font rendering is associated with a single font. font is used to cache various fonts, And the fonts are stored in a cache texture ), this cache structure can be used to contain font fonts. Cache texture is a very important object. It has multiple caches: idle Block List, pixel cache, OpenGL texture handle, and vertex cache (the mesh, mesh, which consti
Get enumeration capabilities from each
The Class you want to enumerate has to have a each method, and its job is to yield the project to a code block, one at a time.
Each does things differently on different classes, such as on an array, each yield the first item, then the second, and the third ... In the hash, the yield is key/value as an array of two elements. On file processing, one line of content is yield at a time. The range iteration first looks at the possibility of iterating and then
Ubuntu 14.04 (trusty ARMHF)
sudo sh-c ' echo ' Deb Http://packages.ros.org/ros/ubuntu trusty main ">/etc/apt/sources.list.d/ros-latest.list '
Set up your keys
sudo apt-key adv--keyserver hkp://ha.pool.sks-keyservers.net--recv-key 0xb01fa116
installation
First, make sure your the Debian package index is up-to-date:
sudo apt-get update
There is many different libraries and tools in ros-not all compile fully on ARM. You can also install ROS packages individually.
ros-base: (Bare Bones) R
Chromium Graphics: Principle and Implementation of the synchronization mechanism between GPU clients-Part I, chromium-part
Abstract: The GPU process architecture in Chromium allows multiple GPU clients to access the GPU service at the same time, and there may be data dependencies between GPU clients, therefore, a synchronization mechanism must be provided to ensure the order of GPU operations. This article discusses the synchronization between GPU clients in a multi-process architecture and the
vertical axis is the sum of all the longitudinal axis values of the preceding category and its longitudinal
The value of the axis value added (eg, the current classification longitudinal axis value is Y3
, whose front has the y2,y1, then he displays the value on the y-axis as Y2+y3+y1, which currently supports line and column graphs
Title: ',//Set the caption of the current diagram
Title: {
Text: ',//Set the title of the current diagram
show:true,//sets whether the current title is displa
:
Options =
{
Seriescolors: ["#4bb2c5", "#c5b47f", "#EAA228", "#579575", "#839557", "#958c12",
"#953579", "#4b5de4", "#d8b83f", "#ff5800", "#0085cc"],//default display category color,
If the number of categories exceeds the number of colors here, the value is assigned from the first position in the queue to the appropriate category
Stackseries:false,//If set to true and has more than one category (if it is a line chart, it must be more than a polyline).
The value of each category (Po
some aspects, this brings the benefits of memory protection and access control to Web browsing. These two points are based on the operating system.
The main process is called "browser process" or "Browser ". This process is responsible for UI running and Tab management, and also for Agent process management. Similarly, a tab-specific process is called "render process" or "Renderer ". Renderers uses the "WebKit" Open-Source engine to parse and layout
you can think and improve your thinking.
Engine module:
(1) platform modules: Initialize the rendering environment. Input System and window management.(2). Renderer: This part mainly serves all behavior sets related to rendering actions. Graphics resource system. Render device. Material System. These are basic rendering atomic operations and objects, such as Graphic Element rendering, rendering State management, and textures, vertexbuffer, and pixelb
Label: chromium syncpoint
Abstract: The GPU process architecture in chromium allows multiple GPU clients to access the GPU service at the same time, while multiple GPU clients may have data dependencies, such as when rendering a webgl page, therefore, a synchronization mechanism is required to ensure the order of GPU operations. This article discusses the synchronization between GPU clients in a multi-process architecture and the basic principles of the syncpoint mechanism.
GPU process architect
, sortable: true, dataIndex: 'pctchang '},
{Header: "Last Updated", width: 85, sortable: true, dataIndex: 'lastchange '}
]);
Five columns are defined here. columns can be configured using parameters: id is used to identify columns. In css, this id can be used to set styles for all cells in the entire column, columns that can be automatically expanded are also identified by this id; header is the column name; width is the column width; sortable is used to specify whether the column is sortable, d
displayed
},
Axesdefaults: {
Show:false, whether the axes are automatically displayed.
Min:null, horizontal (longitudinal) axis Minimum scale value
Max:null, transverse (longitudinal) axis Maximum scale value
pad:1.2, transverse (longitudinal) axis degree value increase factor
Ticks: [],//Set the value on the scale of the horizontal (vertical) coordinate, which can be the value in the Ticks array
numberticks:undefined,//a division factor that sets the horizontal (vertical) Coordinate sc
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