opengl rotate

3.1. OpenGL functions in Windows NT As described in the previous chapter, OpenGL in Windows NT also contains more than 100 library functions. These functions are named in a certain format, that is, each function starts with GL. In addition to basic OpenGL functions, OpenGL in Windows NT also supports the following four

1, based on VC + + WIN32+CUDA+OPENGL combination of remote sensing image displayIn this combination scenario, OpenGL is set to the following two ways when initialized, with the same effect// setting mode 1glutinitdisplaymode (glut_double | GLUT_RGBA); // setting Mode 2glutinitdisplaymode (glut_double | GLUT_RGB);Extracting the pixel data from the remote sensing image data, the R, G, and b three channels ca

From the original text about OpenGL, OpenGL ES, WebGL summaryI. Introduction to OpenGLOpenGL (Full-write open Graphics Library) is a specification that defines a cross-programming language, cross-platform programming interface, which is used for three-dimensional graphic images (two-dimensional). OpenGL is a professional graphics program interface, is a powerful,

my fingers It is very tricky to remember the alignment of the coordinate axes (I don't think this is a difficult task, including the principle of matrix addition and multiplication, which has been fully learned in high school .) Here, the author provides a fast way to remember, as shown in, extending your left hand, palm toward the body, forefinger direction for the X axis, thumb direction for the Y axis, middle finger direction for the Z axis, when I first started learning 3D programming, I of

Related topics: vertex arrays, display lists, pixel buffer objects Download: Vbo.zip, Vbosimple.zip Create VBO to draw VBO Update Vbo ExampleThe Gl_arb_vertex_buffer_object extension improves OpenGL performance by providing the advantages of vertex arrays and display lists and avoiding their shortcomings. The vertex buffer object (vertex buffer object,vbo) allows the vertex array to be stored in high-performance graphics memory located on the server s

OpenGL rendering Pipeline OpenGL first receives the user-provided geometry data (vertices and geometry) and enters it into a series of shader stages for processing, including vertex coloring, subdivision coloring (which itself contains two shaders), and the final geometry coloring, which is then fed into the rasterization unit (rasterizer). The Rasterization unit is responsible for Tu Yuanshong the metadat

What is 1,opengl? OpenGL (Full-write open graphics Library) is a professional graphics program interface that defines a cross-programming language, cross-platform programming interface specification. It is used for three-dimensional image (two-dimensional also), is a powerful, easy to call the bottom-level graphics library.What 2,OPENGL can do

How does opengl display the texture-rich and opengl In the opengl Post Bar, someone turns up a previous help post: // According to the NeHe tutorial lesson6, we got a texture-based ry # include // Use auxDIBImageLoad to load the texture # include # Pragma comment (lib, "GLAUX. lib") # include GLuint texture [1]; AUX_RGBImageRec * LoadBMP (cha

--------------------------------------------------------------------------------------------------------------- ----------------Just like learning other programming languages, in order to write down the first OpenGL programWe must take pains to pave the bricks first, set up a good environment ...So let me first put the environment of the required library, and then start coding.---------------------------------------------------------------------------

. quadricnormals (ptrball, OpenGL. gl_smooth); GL. quadrictexture (ptrball, (INT) (OpenGL. gl_true); GL. enable (OpenGL. gl_texture_2d); GL. enable (OpenGL. gl_lighting); GL. enable (OpenGL. gl_light0); GL. enable (OpenGL. gl_ligh

The openGL roaming function is simple, and the opengl roaming function Recently, when I got the openGL roaming function, I found a lot of source code on the Internet and did not achieve the expected results. Then I wrote an algorithm and shared it. The up and down keys realize shift, and the left and right keys rotate.

If we need to draw two (or more) of the same cube (or objects), just position, scale, rotation is not the same, then we can not need to the object's vertex information, color information, and so on to the video card, but sent once, drawn multiple times, just before each drawing to apply a different transformation matrix. This method is called OpenGL instancing. It is much more efficient than sending the data back to the video card every time.Look at t

The GL Library in OpenGL is the core library, Glu is a utility library, glut is a utility library, GL is the core, Glu is part of the package for GL, glut is OpenGL's cross-platform tool Library, GL contains the most basic 3D functions, and Glu seems to support GL, if the arithmetic is good, The same effect can be done without the glu of the case. Glut is the basic window interface, is independent of GL and Glu, if you do not like to use glut can use

1. What is OpenGLOpenGL is strictly defined as a software interface to graphics hardware. 2. Two FormsOpenGL exists in two forms.A software driver and a graphics card in your PC together make up an OpenGL implementation. 3. Extension mechanicTwo ways:1) vendors can add new functions to the OpenGL API that developers can use.2) New tokens or enumerants can be added that will be recognized by existing

plane. With transformations, you can move, rotate, scale, or even bend an object. However, the transformation does not directly modify vertex data. Instead, the transformation modifies the coordinate system. If you rotate a coordinate system, and then draw in the coordinate system after the rotation, the drawn image is like being rotated. In the Basic OpenGL ren

positions corresponding to the array Subscript: So Translation matrixIt can be expressed: Translation matrix X column matrix (a, B, c, 1) = column matrix (a + X, B + Y, C + Z, 1 ). Zoom MatrixIt can be expressed: Zoom matrix X column matrix (a, B, c, 1) = column matrix (A × Sx, B × Sy, c × SZ, 1 ). Rotating matrix around X axisIt can be expressed: X axis rotation matrix X column matrix (a, B, c, 1) = column matrix (a, B x cos (θ)-C x sin (θ ), B x-sin (θ) + C x cos (θ

In order to use OpenGL ES drawing in an Android app, you first have to create a view container. One of the simplest methods is to implement Glsurfaceview and Glsurfaceview.renderer. Glsurfaceview A view container to display OpenGL-drawn graphics, glsurfaceview.renderer to control the drawing of graphics inside the Glsurfaceview. For more information, please refer to the

*/@OverriDepublic boolean onKeyDown (int keycode, keyevent event) {Float step = 5f;if (keycode = = keyevent.keycode_dpad_up) {render.x rotate = render.xrotate-step;} else if (keycode = = Keyevent.keycode_dpad_down) {render.xrotate = Render.xrotate + step;} else if (keycode = = keyevent.keycode_dpad_left) {render.yrotate = Render.yrotate + step;} else if (keycode = = keyevent.keycode_dpad_right) {render.yrotate = Render.yrotate-step;} Return Super.onk

Reprinted please indicate the source for the klayge game engine, this article address for http://www.klayge.org/2011/07/17/%e8%b7%a8%e8%b6%8aopengl%e5%92%8cd3d%e7%9a%84%e9%b8%bf%e6%b2%9f%ef%bc%88%e4%ba%8c%ef%bc%89%ef%bc%9a%e7%8e%b0%e4%bb%a3opengl/ The previous article raised the basic problem of crossing OpenGL and d3d, and introduced some ways to eliminate the differences between OpenGL and d3d by inputti

ObjectiveIn the first 2 articles, we all talked about shaders, and in the second it was formally said that this shader can only be used in programmable pipelines such as OpenGL es2.x, but not in OpenGL es1.x. But we haven't been saying why, what's the difference between the two. Well, let's get this one together. Learn the rendering pipeline in OpenGL ES.BodyPipe