opengl video tutorial

This document records the technology of OpenGL video playback. In the previous article, we introduced a simple way to use OpenGL to display video. But that's not the essence of OpenGL's display of video technology. Like Direct3D, OpenGL's better way to display

other device of the same screen, we can use software emulation to zoom in, but it can be slow and unbearable. With mixed mode scaling, you need to create an OpenGL ES texture and render the picture (320x240) onto the GL quadrilateral. Textures will be scaled to fit the screen size (1024x768) and your game performance will be significantly improved. From the perspective of implementation, this process can be described as follows: Initialize the

1. Configure the OpenGL environment to download glut (OpenGL utility Toolkit) https://www.opengl.org/resources/libraries/glut/to Local. After decompression there are two Lib files, two DLL files and one. h file.2. Glut.lib and Glut32.lib are copied to X:\Program Files (x86) \microsoft Visual Studio 12.0\vc\lib.3. Glut.dll and Glut32.dll copied to the C:\Windows\system32 folder (32-bit system) or? C:\WINDOWS

tablet size (1024x768) or any other device with the same screen, we can use software simulation to scale, but it will be slow and intolerable. To scale in a hybrid mode, you need to create an OpenGL ES texture and render the image (320x240) to the GL quadrilateral.Textures are scaled to the appropriate display size (1024x768) through hardware, significantly improving game performance.From the implementation perspective, this process can be described

How does OpenGL render video streams.Void render (void){DWORD wait_result = dsvl_vs- gt; waitfornextsample (100/60 );// If (wait_result = wait_object_0){# Ifdef _ debugFrame_counter ++;# Endif// Dsvl_vs-> lock ();If (succeeded (dsvl_vs-> checkoutmemorybuffer ( g_mbhandle, g_ppixelbuffer ))){Glbindtexture (gl_texture_2d, g_texid [cube_tex]);Gltexsubimage2d (gl_texture_2d, 0, 0, 0, cap_width, cap_height,Gl_b

Because want to do an application software, the current own algorithm to apply out, give the researcher to provide a loss of convenience, need to display video stream files in MFC. I tried two methods: OPENCV+MFC;OPENGL+MFC; Both of these methods are feasible. However, when using OPENCV+MFC, it is assumed that there is a problem in setting double buffering, which causes the

6 faces of a cube? A color consists of 4 values (RGBA), 4 vertices per plane, and a plane requires 16 values to describe the color The cube has 6 faces and requires a total of 96 values to describe the color Define a 96-length array to record the color, and then use the Gldrawarrays method to draw the cube What kinds of light sources does 6.OpenGL es support? Directional light Positioning light 7. What is the m

// Nonsense Windows Phone development tutorial series: four-day gameplay to Windows Phone development is Microsoft's own video tutorial. The tutorial was recorded by foreigners, but with Chinese subtitles, it can be seen that Microsoft attaches great importance to the Chinese market. In addition, in a few days (3.28)

development is Microsoft's own video tutorial. The tutorial was recorded by foreigners, but with Chinese subtitles, it can be seen that Microsoft attaches great importance to the Chinese market. In addition, in a few days (3.28), Microsoft and Nokia also intend to bring Lumia to the market in China. The video is divid

final Texture unit color based on the texture coordinates, and combine these colors with the color of the dot element or the color calculated based on the illumination to output the final color of the pixel. In the following tutorial, we will see that the Texture unit can contain different data and implement many special effects. OpenGL supports 1d, 2d, 3D, cube, and many other textures, which are used in

The younger brother is not familiar with the learning of OpenGL. This article is just a Summary of the entry level. Don't laugh at it. At the same time, this article is only a summary of my own small experience. The design ideas and procedures are for reference only. In the past few days, I encountered a headache. A design requires that CPLD be used to detect the presence or absence of video signals, and th

. Algorithm All of them have detailed descriptions, which will help you understand more deeply. 5. http://www.gametutorials.com/ I contacted the earliest OpenGL tutorial website and had many special tutorials, such as a small 2D RPG tutorial. Unfortunately, most of the Code cannot be downloaded for free now. 6. http://www.ozone3d.net/tutorials/index.php There ar

OpenGL ES 05-texture ing our rectangle I have decided to introduce texture ing in advance because it may be easier to map a texture to an object instead of facing a multi-faceted (or 3D object ). In addition, it seems that this is the most desired knowledge for iPhone OpenGL ES programmers, so I will insist on Texture ing until now. I know that I have skipped many details supported by

Guidance: Modern OpenGL Tutorial 01--Getting Started GuideIn this article, we'll add a map to the triangle, which involves adding some new variables to the vertex and fragment shader, creating and using the mapped object, and learning a bit about the mapping unit and mapping coordinates.This article uses two new classes into the Tdogl namespace: Tdogl:bitmap and Tdogl:texture. These classes allow us to uplo

corresponding key array to false.Killglwindow (); // destroy the current windowFullscreen =! Fullscreen; // switch to full screen/window mode// Recreate the OpenGL window (modify)If (! Createglwindow ("nehe's first polygon tutorial", 640,480, 16, fullscreen )){Return 0; // exit the program if the window cannot be created}} Markus Knauer note: In ("OpenGL