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Introduction to sharpgl (OpenGL)-texture planet

Document directory 1 initialize material, light, texture, and planet 2. Draw a planet 3. Use openfiledialog to replace the texture 4. Drag and Drop to replace the texture Introduction to sharpgl (OpenGL)-texture planet PS: sharpgl is the C # OpenGL encapsulation. If you are not familiar with sharpgl, you can search for sharpgl at www.codeproject.com. In a small example, we can load various images to a spherical planet to show that the planet is automatically rotated. We can use wsad and

WebGL Introductory Tutorial 1th--Six colors cubic

shader.Compiling linksThe GPU does not directly understand the GLSL language, we need to compile the shader source code and link to the shader program for use by the GPU. Conveniently, we can call JavaScript API in the browser to complete the work of compiling links.PersonallyNow it's time to do the actual combat. We read the code and explain the details.Let's look at our HTML structure first:Because JavaScript does not directly support the operation of matrices and vectors, we refer to the

Variable Sequence Code of topological sorting

is not required for non-network graphs Struct EdgeNode * next; // link field, pointing to the next adjacent point } EdgeNode; Typedef struct VertexNode {// vertex table Node VertexType data; // vertex domain, storing vertex Information Int in; // stores the number of vertex inputs. EdgeNode * firstEdge; // edge header pointer } VertexNode; Typedef struct Edge {// Number of Edge Sets Int u, v; // arc tail and arc H

OpenGL used on Android

Public class glsurfaceviewactivity extends activity {Private myglsurfaceview mglsurfaceview;/** Called when the activity is first created .*/@ OverridePublic void oncreate (bundle savedinstancestate ){Super. oncreate (savedinstancestate );Mglsurfaceview = new myglsurfaceview (this );Setcontentview (mglsurfaceview );// Setcontentview (R. layout. Main );}}Public class myglsurfaceview extends glsurfaceview {Private myglrenderer mrender;Public myglsurfaceview (context ){Super (context );// Todo auto

Variable sequence code of topological ordering

; Number of storage vertex-in degreesEdgenode *firstedge; Edge table Header pointer} Vertexnode;typedef struct edge{//edge set Arrayint u, v; ARC Tail and ARC headint next; Point to the next edge of the same arc tail// Edgetype weight; For a non-grid diagram, it is not necessary to} edgelib;int BOOK[MAXM] = {0}; Mark if a letter appearsint Istoposeq (char *data, char *topo);//Determines whether the topo string is a topological sequence based on the relational list dataint Creategraph (char *data

Chromium Graphics: Principle and Implementation of the synchronization mechanism between GPU clients-Part I, chromium-part

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

[Android development and learning 09] Android OpenGL ES Basics

. GLSurfaceView. Renderer;2. Create a GLRender class to implement the Renderer interface: [Java] view plaincopyprint? Public class GLRender implements Renderer{} Public class GLRender implements Renderer{}3. implement three abstract methods in the GLRender class: [Java]Public void onDrawFrame (GL10 gl)Public void onSurfaceChanged (GL10 gl, int width, int height)Public void onSurfaceCreated (GL10

Chromium graphics: Analysis of the Principle and Implementation of the synchronization mechanism between GPU clients-Part II

Abstract: Part I analyzes the synchronization problems between GPU clients and the basic principle of the extended synchronization point MECHANISM OF CHROMIUM GL. This article analyzes the implementation of the synchronization point mechanism from the source code perspective. The implementation of the synchronization point mechanism mainly involves how to implement two GL extension interfaces, insertsyncpoi

Chromium graphics: Analysis of the Principle and Implementation of synchronization between GPU clients

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

Add images to WebGL points (using texture on point)

varVshader_source =[ "Attribute Vec4 a_position;", "Uniform mat4 U_projmatrix;", "Uniform float u_pointsize;", "Void Main () {", "gl_pointsize = u_pointsize;", "Gl_position = U_projmatrix * a_position;", "}"].join ("\ n")varFshader_source =[ "Precision Mediump float;", "Uniform sampler2d u_sampler;", "Void Main () {","Gl_fragcolor = Texture2d (U_SAMPLER,VEC2 (GL_POINTCOORD.X,1.0-GL

Notes on adjusting kernel parameters of FreeBSD system optimization

Many people want to optimize their own FreeBSD, especially in terms of network performance and kernel adjustment, because these are the most direct optimization methods. Here I have collected and sorted out the information and commented it out in Chinese. I believe many people will get it. CODE # maximum buffer space of TCP data to be sent. net. inet. tcp. sendspac... Many people want to optimize their own FreeBSD, especially in terms of network perf

Topology sequencing critical path (depth first search)

-grid diagram, it is not necessary tostruct Edgenode *next; Chain field, pointing to the next adjacency point} Edgenode;typedef struct vertexnode{//Vertex table nodeVertextype data; Vertex fields, storing vertex informationint in; Number of storage vertex-in degreesEdgenode *firstedge; Edge table Header pointer} Vertexnode;void Creategraph (Vertexnode *gl, int n, int m);//The Vertex and edge information is read into the adjacency table of the represen

[WebGL Primer] 26, texture drawing

textures.Textures are processed in WEBGL using texture objects, and the CreateTexture function is required to generate texture objects.Examples of use of >createtexturevar tex = Gl.createtexture ();This function has no parameters, but simply returns a texture object, passing the above code, the variable tex is an empty texture object.After the texture object is generated, the texture object is then bound to WebGL. Let's think about it, the previous use of cached objects in WebGL is also require

Notes on adjusting Kernel Parameters of FreeBSD system optimization

Many people want to optimize their own FreeBSD, especially in terms of network performance and kernel adjustment, because these are the most direct optimization methods. Here I have collected and sorted out the information and commented it out in Chinese. I believe many people will get it.# Maximum buffer space for TCP data to be sentNet. inet. tcp. sendspace = 65536# Maximum accept TCP buffer spaceNet. inet

Description of common parameters in sysctl. conf in linux

This article will introduce you to the common parameters in the sysctl. conf file in linux. Here we will explain each parameter in Chinese and hope to help you. I recently found that many kernel optimization parameters cannot be remembered. I wrote an article to record it for later viewing. Edit the/etc/sysctl. conf file and add the following content to it: (with comments)# Maximum buffer space for TCP data to be sentNet. inet. tcp. sendspace = 65536

OpenGL ES tutorial IV: coloring)

. The default value of the function parameter is 1, which is why the square above is white. Create a new class called FlatColoredSquare it shocould be identical to the Square class. Then in the FlatColoredSquare function draw, add this line: Create a new class named FlatColoredSquare to distinguish it from the Square class. Add the following line to the painting function: Gl. glColor4f (0.5f, 0.5f, 1.0f, 1.0f); // 0x8080FFFF I usually add a comment li

[WebGL Primer] 14, drawing polygons

Note: The article is translated from http://wgld.org/, the original author Sambonja 広 (doxas), the article if there is my additional instructions, I will add [Lufy:], in addition, The WEBGL research is not deep enough, some professional words, if the translation is wrong, you are welcome to correct. This is the running result of this demo.Drawing ProcessIt's time to draw a polygon, the HTML, vertex shader, and fragment shader introduced in the previous article (11, shader compilation and connect

SharpGL learning notes (1) platform construction and Opengl hello World and sharpgl learning notes

void Form1_Load (object sender, EventArgs e) 17 {18 19} 20 21 private void openGLControl1_OpenGLInitialized (object sender, EventArgs e) 22 {23 OpenGL gl = openGLControl1.OpenGL; 24 gl. clearColor (0, 0, 0, 0); 25} 26 27 private void openGLControl1_Resize (object sender, EventArgs e) 28 {29 OpenGL gl = openGLControl1.OpenGL; 30 31 // set the current matrix mode

Chromium Graphics: Principle and Implementation of the synchronization mechanism between GPU clients-Part II, chromium-part

Chromium Graphics: Principle and Implementation of the synchronization mechanism between GPU clients-Part II, chromium-part Abstract: Part I analyzes the synchronization problems between GPU clients and the basic principle of the extended synchronization point MECHANISM OF Chromium GL. This article analyzes the implementation of the synchronization point mechanism from the source code perspective. The implementation of the synchronization point mechan

Point to draw a spiral

/*** Buffer tool class*/Public class bufferutil {/*** Convert a floating point group to a byte Buffer*/Public static bytebuffer arr2bytebuffer (float [] ARR ){Bytebuffer Ibb = bytebuffer. allocatedirect (ARR. length * 4 );Ibb. Order (byteorder. nativeorder ());Floatbuffer fbb = Ibb. asfloatbuffer ();Fbb. Put (ARR );Ibb. Position (0 );Return Ibb;}/*** Convert list to byte Buffer*/Public static bytebuffer list2bytebuffer (list Bytebuffer Ibb = bytebuffer. allocatedirect (list. Size () * 4 );Ibb. O

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