android opengl es 2 0 tutorial

Gl_nearest_mipmap_nearest near-neighbor filtering using MIP mapping Gl_nearest_mipmap_linear near-neighbor filtering using interpolation between MIP mapping levels Gl_linear bilinear interpolation Gl_linear_mipmap_nearest bilinear interpolation using MIP maps Gl_linear_mipmap_linear Tri-linear interpolation ( bilinear filtering with interpolation between MIP mapping levels) Table

OpenGL ES introduction OpenGL-ES is a cross-platform, fully functional API for 2D and 3D graphics applications free of license fees, it is mainly designed for a variety of embedded systems, including consoles, mobile phones, handheld devices, household appliances and automobiles. It consists of a well-defined subset of

. The basic graphics supported by OpenGL ES are point points, line lines, and Triangle Triangle, and all other copied graphics are combined by these basic geometries. After the drawing instruction is issued, the vertex (Vertices) array is assigned a coordinate transformation or light processing. When vertex processing is complete, pixel information is generated by Rasterizer, called "Fragments".

Recently, I came up with an idea on Android: how to use OpenGL ES to draw a 3D image in the background, and then save the drawn image as a bitmap format... After several days of thinking, I tried a variety of methods, but none of them worked. At first I tried the glsurfaceview method, but this would lead to a connection between my activity and the rendered stuff,

'd like to tell you that people use cameras to observe things in 3D, although OpenGL does not actually have a camera. So when you move on the screen, you are actually moving all objects, and the feeling of motion is not caused by the creation of a camera to watch movies, instead, all objects in the world are moved with the relative coordinates (0, 0. It sounds l

OpenGL ES 08-do not use the mix color of mr. Bucket 1 Please note: I am not very satisfied with the status when I write this tutorial, so please do not care if you have any questions. If something goes wrong, don't worry. I will continue to explain it in section 2nd. Who is mr. Bucket? That's my kitchen mixer! (In English, mixer and mixed colors are the same.) Of

Projection The 2D plotting of OpenGL ES is mapped to the screen through "projection. We have already mentioned that OpenGL ES is mainly related to triangles. A triangle has three vertices in 3D space (remember that OpenGL ES perfo

OpenGL ES provides two methods to draw a space ry:Public abstract void gldrawarrays (INT mode, int first, int count) is drawn using vetexbuffer. The order of vertices is specified by the order in vertexbuffer.Public abstract void gldrawelements (INT mode, int count, int type, buffer indices), you can redefine the vertex sequence, which is specified by indices buffer.Mode indicates the vertices mode describe

first plane: GlTexCoordPointer (2, GL_SHORT, 0, squareTextureCoords );GlEnableClientState (GL_TEXTURE_COORD_ARRAY ); This is very simple. Do not delete the color Processing Section. Check the new generation result; Hey, it's like magic. A texture-mapped 3d object rotates in a 3d space. A concept in texture ing imagesIn the previous tutorial, I forgot to explain

FromArticle: [Android source code] Android graphic rendering (skia EGL OpenGL ES) Android OpenGL ES coordinate system: it is three-dimensional (of course there are also two-dimension

1. How do I draw a triangle with OpenGL es? Write a class implement renderer interface, implement Ondrawframe method, Onsurfacechanged method, onsurfacecreated method Write a class triangle class, define fixed-point coordinates, load all vertex coordinates, call a gldrawarrays method of GL10 to draw a triangle Finally, call triangle.drawself in the overridden Ondrawframe method to actually

Android uses ndk instead of yuv420 overlay to ensure smooth video display. Instead, it uses a platform to port a safer rgb565 display. Tested on Android 2.3. However, the MTK andriod platform (a301) encountered a glteximage2d gl_error 0x501 error (the source image is 176*144 ). After repeated tests, this MTK andriod version supports OpenGL

defined by extensions, so they are different on each platform. Unfortunately, all Android devices only support the Ericsson texture compression (ETC1) format (except for the first generation devices, the first generation devices do not support OpenGL ES 2.0 ). ETC1 only supports 8-bit precision per pixel, and does not support alpha. Most games use compressed tex

The previous article describes several basic geometries that OpenGL ES can draw: points, lines, triangles. Examples of these basic geometries will be presented separately. For the sake of convenience, these geometries are plotted on the same plane for the time being, and after the coordinate system and coordinate transformations of OpenGL

Android. OpenGL-----Class:Gldebughelper: A help class for debugging OpenGL ES programsGLU: class that provides GL Public ToolsGlutils: A Tool class that connects OpenGL ES and Android A

The fog effect is actually very easy to implement. I will summarize it first: (1) first, we must set the background color to the fog color. (2) Enable the fog Effect (3) set the background color of fog (4) set the fog Equation The fog equation has three forms: exp (oldest), exp2 (exp enhanced version), and linear (the best fog equation, of course, this is used). If linear is used, more fog starts, the end parameter indicates how far the fog starts and

This example describes how to use a transparent background to draw OpenGL images. The procedure is as follows:1. Use transparent theme for ActivityAndroid: label = "Graphics/OpenGL ES/Translucent GLSurfaceView"Android: theme = "@ style/Theme. Translucent"Android: configChang

Applicaton4, you can debug C + + codeNote the point:1, the real machine may appear no debug symbol found error2, the simulator version number is too high will appear no debug symbol found error3, the download of the other version number of the SDK is placed in the \sdk\platforms4, need to run as Android application first install the appError type:The error type occurs because the Android version number is

Common OpenGL ES APIs: Gl_triangle_strip: continuous triangle drawing Gl_triangle_fan: triangular slice Glclearcolor (0.f, 0.f, 0.f, 1.f); // set the background color of the mode window. The color is the rgba value. Glviewport (0