opengl 3 3 tutorial

Note: The following content is from OpenGL getting started tutorial. Select a part of content for learning ~~~ When we draw a geometric image above, do you think our plot scope is too narrow? Coordinates can only be from-1 to 1, and can only be the right X axis, Y axis up, Z axis vertical screen. These limitations cause a lot of inconvenience to our drawing. We live in a 3D world-if we want to observe an o

3 DMAX Model Application in OpenGL Fang Bin (Aircraft Design Institute of guihang group, Anshun 561000, Guizhou) Abstract: This article describes how to implement 3 DMAX data model program control in OpenGL 3D programming. The results can be used in aircraft flight motion simulation and real-time flight monitoring.

plane has its own coordinate system. Figure 7-2. It displays the cropping plane superimposed on the coordinate system from the camera's perspective. Figure7-2. Crop a plane (also called a projection plane) and its coordinate system. Note that the coordinate system of the plane is not fixed. We can operate on it to make our projection plane work in any coordinate system (e.g ., we can specify that the origin of OpenGL ES is in the lower left corner

OpenGL ES learning notes (3)-texture and es learning notes First, I declare that this article is the author's note on learning OpenGL ES Application Development Practice Guide (Android volume). The Code involved is from the original book. If necessary, go to the Source Code address specified in the original book to download.

operation speed is fast, but it is slightly less convenient to program, and the image effect is also worse than the RGB color. StarCraft may represent the screen effect of a 256-color table. Although it can run smoothly on a very bad PC, from the current perspective, the screen effect is insufficient.Currently, the performance of PC is sufficient to use RGB color in various scenarios. Therefore, the index color is not mainstream in PC program development. Of course, some small devices, such as

Transferred from: http://www.cnblogs.com/opengl/archive/2012/10/30/2747130.html1 . Experimental Purpose:Understand how an OpenGL program translates, rotates, and scales transformations.2 . Experimental content:(1) Reading the experiment principle, running the demonstration experiment code, mastering the OpenGL program translation, rotation, zoom transformation me

Original post: cocos2D-X source code analysis learning OpenGL from cocos2D-X (3) ---- batch_command The last article introduced the quad_command rendering command, along with VAO and VBO. This article introduces the batch processing rendering command batchcommand. The batch processing command processing is relatively simple in render. 1 else if (commandtype = rendercommand: Type: batch_command) 2 {

: glcolor3f (1.0f, 0.0f, 0.0f); does not use green, blue, and red is the most used, resulting in the purest red. glcolor3f (0.0f, 1.0f, 1.0f); Indicates the use of green, blue to the maximum, without using red. The effect of blending is light blue. glcolor3f (0.5f, 0.5f, 0.5f); means half of the colors used and the effect is gray. NOTE: Floating-point numbers can be accurate to several digits after the decimal point, which does not mean that the computer can display so many color

pressed or released" if (button== glut_right_b Utton)//callback was due to a release/press of the right button Equivalent to "If the right mouse button is pressed or is released" if (button== Glut_middle_button)//callback is due to a release/press of the middle Button// Equivalent to "If the middle mouse button is pressed or released" Copyright NOTICE: This article for Bo Ma

Call OpenGL in cocos2dx (3.X) I have been using pomelo to write back-end data for the past few months. Now the project is coming to an end and I have finally had time to study OpenGL-related things. OpenGL itself is cross-platform, but the development environment of each platform is not the same. It is much easier to p

, Glsizei stride, const glvoid* pointer);DrawGldrawarrays (glenum mode, glint first, glsizei count);//Direct read vertex data drawingGldrawelements (glenum mode, Glsizei count, glenum type, const glvoid* indices); Draw based on index (that is, all vertices are in an array, using an index to refer to the vertex data)The following is an example of drawing two triangles based on the API described above.#include Note: The code is written according to Red Book, some auxiliary code (such as Loadshader

glint and glsizei ),F indicates a 32-bit floating point number (OpenGL defines this type as glfloat and glclampf ),D indicates a 64-bit floating point number (OpenGL defines this type as gldouble and glclampd ).V indicates that several parameters passed will use pointers. See the example below.These functions have the same function except for the type and number of parameters. For example, the functions of

to, and using the same iterative method for the next judgment. In addition to drawing lines and circles, you can also draw ellipses, hyperbolic curves, and so on.There is a little more experience is that this problem must be seen in foreign forums to find a good explanation.Code:#include #includevoidMyinit (void) {Glclearcolor (1.0f,1.0f,1.0f,0.0f); glcolor3f (1.0,0.0,0.0); Glmatrixmode (gl_projection); Glloadidentity (); Gluortho2d (0.0,500.0,0.0,500.0); Glmatrixmode (Gl_modelview);}void

second green vertex. The lower left vertex of the triangle is set to green.Glcolor3f (0.0f, 1.0f, 0.0f); // set the current color to green.Glvertex3f (-1.0f,-1.0f, 0.0f); // bottom left Set the third vertex, that is, the last vertex. Set the color to blue before you start painting. This will be the right bottom vertex of the triangle. When glend () appears, the triangle is filled. However, because each vertex has a different color, it seems that the color is sprayed out of each corner, and it i

the camera position and specify it through the point pointed by the camera. You also need to specify an upward vector. For convenience, the vector is usually set to (0, 1, 0) or the Y axis in the coordinate system. Void glulookat (gldouble eyex, gldouble eyey, gldouble Eyez, Gldouble ATX, gldouble Aty, gldouble atz, Gldouble UPX, gldouble upy, gldouble upz) // Determine a matrix that can be used for camera positioning and targeting. The parameters involved include the camera position (viewpoint

Learning OpenGL (3) drawing spiral graphics [Email protected] Http://blog.csdn.net/kezunhai In OpenGL, graphics are composed of some basic elements, which interpret a set of fixed points or vertex lists as some images drawn on the screen. The smallest element in OpenGL is a vertex. There are 10 elements in