Opengl basic learning topic (2) vertices, straight lines, and polygon
Digress
As learning grows, I feel more and more confused. In the previous blog, we recommend that you use a simplec framework based on VS2015 to learn opengl.
Some problems.
1. The Release version is not considered in the VS Debug mode.
[2] = { -0.5, cy},Pointe[2] = {-bx, by};Glclear (Gl_color_buffer_bit);According to the order of A->c->e->b->d->a, you can draw the pentagramGlbegin (Gl_line_loop);GLVERTEX2FV (Pointa);GLVERTEX2FV (POINTC);GLVERTEX2FV (PointE);GLVERTEX2FV (POINTB);GLVERTEX2FV (POINTD);Glend ();Glflush ();}Example three, draw a graph of sine function/*Since OpenGL default coordinat
time, so you can use it to write a CS. However, bloggers still believe that learning things should be driven by economic benefits and work needs. Otherwise, they should not learn things. In this age of explosive knowledge, it is necessary to advocate time saving, try to use time on the cutting edge.
We use vs2010 C # To build a blank windows form application.
First, put the three dll files in the downloaded SharpGL (except for serialization. dll) Introduce C #, and then select SharpGL for "se
. Renderer interface methods:
1. onsurfacecreated ()
When creating a glsurfaceview object, the system calls this method once. This method is used to execute actions that only occur once, such as setting OpenGL environment parameters or initializing OpenGL graphics objects.
2. ondrawframe ()
This method is called every
OpenGL ES 2.0 VBO and rendering
1.VBO Initialization1) glgenbuffers () generates Bufferid 2) Glbindbuffer () operates it, the parameter is Vbo Bufferid 3) glbufferdata () specifies the data and usage inside
When you want to use this VBO then Glbindbuffer () its bufferid, which generally put vertex data (including the model of XYZ and texture coordinates UV), in
Speaking of programming, there are probably a lot of people think of TC's # include But have you ever wondered how those fancy PC games were written? By the TC, the poor 640*480 resolution, 16Color to do it? Obviously it's not going to work.The purpose of this post is to let everyone give up the old interface of the TC, let everyone touch some new things.OpenGL, one of the most popular graphics APIs, has features that are superior to DirectX in some situations.
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1. vertex processor. In this phase, the shader operation is performed on each vertex. The number of vertices is specified in the draw function. Vertex shader does not have any body element semantics. It only targets vertex operations, such as coordinate space changes and texture coordinate changes. Each vertex must execute the vertex shader and cannot skip this stage. After the vertex shader is executed, the vertex enters the next stage
1. Drawing Basics
Clear window
Glclearcolor (0.0, 0.0, 0.0, 0.0 );Glclear (gl_color_buffer_bit );
The first code sets "clear color", and the second code resets the current color buffer to "clear color ".
In addition to the color buffer (color buffer, corresponding pixel color on the screen), the graphic hardware also has other buffers, such as depth, stencer, accumulation, which are used to set the clearing values of these buffers respectively: glclea
Tool: xcode 4.2
Development Environment: cocoa, OpenGL, objective-C
1. Create a project myopengl
Open xcode, select create a new xcode project, select cocoa application in the pop-up window, and enter the project name myopengl after the next step.
The xcode window is as follows:
2. Add OpenGL and glut Libraries
Click
whole process of tossing.1, may encounter the pit??????? I encountered a lot of pits when I installed the video driver, the following pits are limited to the Dell XPS 9560 4 K, the other models of the machine are not specifically clear:Pit One: after the installation of the system directly update the system CPU consumption 100%, basically no way to operate, about this part of the reason is not only the gra
in an application, understanding how to implement these classes in an Activity should be the first goal.
GLSurfaceView
This class is a View. In this class, you can draw and maintain objects called using OpenGL APIs, and it is similar to the SurfaceView class. Create an instance of the GLSurfaceView class and add a Renderer object to it to use this class. However, if you want to capture touch screen events, you should inherit the GLSurfaceView class a
NeHe OpenGL lession 2, neheopengllession
# Include
Mac OS X running command:
$: Clang-o lession lession2.c-Wno-deprecated-framework OpenGL-framework GLUT
$:./Lession
OpenGL, DirectX
Learning is done in parallel. You cannot do it in this way. If you want to learn a game, you can:C, c ++ syntax level,
Generate entities based on vertex cacheOriginal (English link) http://ogldev.atspace.co.uk/www/tutorial03/tutorial03.html1 __author__="WSX"2 3 ImportNumPy as NP4 fromOpengl.glutImport*5 fromOpengl.glImport*6 ImportcTYPES7 defDraw ():8 glclear (gl_color_buffer_bit)9 Glenablevertexattribarray (0)Ten Glbindbuffer (Gl_array_buffer, VBO) OneGlvertexattribpointer (0, 3, gl_float, Gl_false, 0, None)#None of this here can be written as 0. AGldrawarrays (gl_
Original address: opencv for iOS Study Notes (9)-rendering ar scenario 2 with OpenGL
The operation procedure of drawframe is:
1. Clear the scenario.
2. Start the normal projection to draw the background.
3. Draw the last image obtained from the camera in the viewport.
4. Set Perspective Projection based on internal c
From: http://www.cnblogs.com/opengl/archive/2012/11/14/2770745.html
To add light to a scene, perform the following steps:
(1) set one or more light sources and related properties;
(2) Select a illumination model;
(3) set the material attributes of an object.
The details are as follows:
1. Set the light source
(
closer to the screen smooth. The third texture (texture 2) uses the mipmapped filtering method, which creates a texture with excellent appearance. Based on our usage type, the values of the filter variables are equal to 0, 1, or 2. Next we start with the first texture.Gluint texture [3] allocates storage space for three different textures. They are located in te
Rotation:
In this lesson, I will teach you how to rotate triangles and quadrilateral. The triangle in the left graph rotates along the Y axis, and the Quadrilateral rotates along the X axis.
In the previous lesson, I will teach you how to color triangles and quadrilateral. This lesson will teach you how to rotate these color objects around the axis.In fact, you only need to add a few lines to the code of the previous lesson. Next I will rewrite the entire routine. So that you can know what is a
specification). The Mesa source package contains a large number of OpenGL sample programs, including sample code in OpenGL Red Book, code to invoke glut or GLX interfaces, code to invoke EGL, and so on.Figure 1Figure 1 shows the process of a 3D application running, the OpenGL drawing program commands are translated in
2.1Network Driver StructureThe architecture 1 of the Linux Network Driver is shown in.It can be divided into four layers:(1) Protocol Interface Layer
(2) network device interface layer
(3) Device Driver Function Layer
(4) network
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