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Scalable video buffers through OpenGL ES blending mode to fit the display dimensions _android

the quadrilateral are in the [−1,1] range. This is because the coordinate system of OpenGL is between (−1,1) and the origin (0,0) is in the Center of the window (as shown in Figure 3-10). In an ideal world, we should not worry too much about the size of the video buffer (especially the use of software to simulate the only calibration device/renderer). This is true when you zoom video using OpenGL in Andro

At Intel™The processor transplanted OpenGL * games to Android * (Part 1)

There is a huge opportunity to migrate games and other applications that use a large number of 3D graphics from OpenGL to Google Android devices, including devices built on Intel's atom micro-architecture, because OpenGL-based games, game engines, and other traditional software are easy to obtain, OpenGL is easy to transplant, and Android can provide

[OpenGL] use OpenGL shader to convert YUV to RGB-(GPU implementation is called directly, hardware-only, and high efficiency)

* height * 5 / 4 ); glTexParameteri ( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR ); glTexParameteri ( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR ); glTexParameteri ( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE ); glTexParameteri ( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );} In the above Code, 1. YUV is the YUV data file. 3. Pass the texture to OpenGL shader for display. 3.1 vertex shader and fragment shader code G

OpenGL learning diary-2015.3.13 -- Multi-instance rendering, opengl-2015.3.13

OpenGL learning diary-2015.3.13 -- Multi-instance rendering, opengl-2015.3.13Instancing or instancd rendering is a method for continuously executing multiple identical rendering commands. The rendering results produced by each command are slightly different. It is a very effective method that uses a small number of api calls to render a large number of ry. OpenGL

"OpenGL Basics"--encapsulating OpenGL functions with object-oriented methods (three)--drawing rectangles

Today's implementation is to draw a rectangle on the Window object, and you can customize the coordinates of the rectangle, the length width, the color of the border's size, whether it fills, and the color when it fills.The main idea is to draw a border with a line, then draw a rectangle inside, and then choose the transparency of the rectangle according to the pattern of whether it is filled or not, and if it shows, the opacity is 1, and the opacity is 0.The following is the code for the rectan

OpenGL system design-1.2 OpenGL Architecture

1.2 OpenGLArchitecture OpenGL supports multiple platforms, including Windows , liunx , and MACOs and UNIX . If the application Program does not use a large number of OS-related calls, therefore, porting the OpenGL program between different platforms is quite simple. Windows has an absolute advantage in the desktop operating system. therefore, the winodows application that develops

OpenGL library function list OpenGL core function library

Gldrawelements renders elements in the array data Gldrawpixels writes a set of pixels to the frame buffer. Gledgeflag defines an edge flag Array Gledgeflagpointer defines an array of edge signs Glenable and gldisable enable or disable the special functions of OpenGL Glableclientstate and gldisableclientstate open or close arrays respectively Glevalcoord solves one-dimension and two-dimensional textures Glevalmesh1, glevalmesh2 solves one-dimensional

OpenGL templates Mac Cmake OpenGL (Glut) template

Some of the features that you often use to make a template, have a light effect, you can zoom in with the mouse, around the origin point of the rotating coordinate systemwatermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqvchlhbmcxotg5/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma==/ Dissolve/70/gravity/southeast ">Main.cpp#include CMakeLists.txtCmake_minimum_required (VERSION 2.6) Project (OpenGL) Find_package (OpenGL

Introduction to OpenGL from scratch

(), glubuild1dmipmaps (), and glubuild2dmipmaps ().Compared with the basic library, the transformation functions here are more advanced. My personal feelings are reflected in different dimensions, which are more complex than 3D functions. Perspective Projection: gluperspective () Orthogonal projection: gluortho2d () 3D viewpoint (observation point): glulookat ()Create and delete a Quadratic Surface: glunewquadric (), gludeletequadric () Sphere: glusphere () Cylindrical Surface: glucylinder ()Re

3D Battle Network Game C + + framework based on C/s architecture _03 Client detail design with OpenGL, QT Basics

design of the client, how do we make a detailed design of the client?(2) class diagram:Four, 3D scene module design(1) Thinking:Based on the display requirements of the 3D interface and the interface requirements of the 3D scene module, what aspects should be considered for the detailed design of the module?(2) class diagram:Welcome everyone to learn to communicate, if there is insufficient to criticize correct, reproduced please indicate the source,

OpenGL programming in QT (1) steps required for OpenGL programming in QT

I. Preface I spent some time studying ogre at home during the summer vacation, basically a wiki tutorial every day. After finishing the preliminary tutorial, I felt that I could not proceed, because there were a lot of things that I had to understand, so I wanted to get in touch with something more "low-end. Open-source, of course, OpenGL is required. If we use QT for cross-platform applications, we will spend some time studying it. But at that time,

Some suggestions for converting OpenGL program into OpenGL ES: gldrawarray and gldrawelements

It took four days to transfer an FPS game engine fly3d to OpenGL ES. As we all know, ES is intended for mobile devices, so for efficiency, it performs a lot of screening and subtraction on OpenGL, throwing away all inefficient functions such as (glbegin) and throwing away some of the drawn types such as gl_polygon, Here we will share with you the alternative method of using gldrawarray to draw polygon.And

The difference between OpenGL and glrotatef () in OpenGL ES

The cube project has been around for nearly a month. The last important function module is gesture recognition, this will add a winning weight for the "2010 Google Android app development China College Student Challenge. Gesture Recognition is simple, just reload the method. The trouble is that glrotatef (float angle, float X, float y, float Z) in OpenGL ES ). This function is different from the glrotatef (float angle, float X, float y, float Z) funct

Notes for start-up using OpenGL-Some Thoughts on sequential operations and parallel operations (refer to the tutorial of heijin: Modeling of those events using OpenGL)

It is a modeling language rather than a programming language. Compared with many programming languages, its biggest feature is parallelism. That is, in fact, it not only describes serial operations, but also describes parallel operations. If you understand the parallel design principles of the OpenGL, the designed system is not only well-defined, but also easy to understand and maintain. For example, for the streaming lamp of programming entry, assumi

opengl--Point drawing (using OpenGL to draw a helix of the rotatable coordinate system)

;/** * 3. */@Overridep ublic void Ondrawframe (GL10 gl) {gl.glclear (gl10.gl_color_buffer_bit); gl.glcolor4f (1f, 0f,0f,1f); Gl.glmatrixmode ( Gl10.gl_modelview); gl.glloadidentity (); Glu.glulookat (GL, 0, 0, 5f, 0, 0, 0, 0, 1, 0);/** * GL.GLROTATEF ( -90f, 1, 0, 0): * Set Rotation angle * * GL.GLROTATEF ( -90f, 1, 0, 0) : 1,0,0. Indicates rotation around the x axis * The first number indicates the rotation angle. The -90f indicates a clockwise rotation of 90 degrees. 90F means 90 degrees coun

"OpenGL Basics"--encapsulating OpenGL functions using an object-oriented approach (II)

//Then delete the previous starting point void MoveTo (point p) {if (This->status = = This->line_start) {points.pop_back (); return;} Points.push_back (p); this->status = This->line_start;} Draw the end point of the line, if it starts at the end point. Forbid join void LineTo (point p) {if (This->status = = This->line_start) {this->points.push_back (P);this-> status = This->line_end;return;}} Join the node array void addpoints (point* p,int size) {for (int i = 0; i Here is an example of a pentag

"OpenGL Basics"--encapsulating OpenGL functions using an object-oriented approach (II)

(point p) {if (This->status = = This->line_ START) {points.pop_back (); return;} Points.push_back (p); this->status = This->line_start;} Draw line termination point, forbid add void LineTo (point p) {if (This->status = = This->line_start) {This->points.push_ If first is the terminating point) Back (p); this->status = This->line_end;return;}} Add a node array void addpoints (point* p,int size) {for (int i = 0; i Here is an example of a pentagram:(Inside the window and application, point class in

OpenGL development tutorial-the first OpenGL program

# Include "stdafx. h"# Include Void myDisplay (void){GlClear (GL_COLOR_BUFFER_BIT); // clear. GL_COLOR_BUFFER_BIT indicates clearing the color// Set the current colorGlColor3f (0.0f, 1.0f, 0.0f );// Draw a rectangleGlRectf (-0.5f,-0.5f, 0.5f, 0.5f );GlFlush (); // ensure that the preceding OpenGL command is executed immediately}Void test (int argc, char ** argv){Gluinit ( argc, argv );Fig );Gluinitwindowposition (100,100 );Gluinitwindowsize (600,400 )

/Lgc graphic rendering/OpenGL ES Overview

pipeline transformations (rotation, scale ...) Fog Lighting To port your code, I recommand you: Learn glsl 1.2: You can read webgl tutorials try to write some shaders in shader toy. List all material you have (or rendering TechCrunch); list all verticesInformations as vertices coordinates, normal, textures coord, colorInformations you need for each material. With theses informations, youWill know which glsl programs (vert

Lesson 01st OpenGL window (1)

This section of the tutorial was completely rewritten in January 2000. This will teach you how to set up an OpenGL window. It can be a window or full screen, can be any size, any color depth. The code here is stable and powerful. You can use it in all your OpenGL projects. All my tutorials will be based on the code in this section! All errors are reported. Therefore, there should be no memory leakage and th

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