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Pbuffer
Pixel buffer or pBuffer is a feature in OpenGL and OpenGL ES platform interfaces which allows for off-screen rendering. It is specified as an extension to WGL API, and a core feature of GLX & EGL. When using pBuffers, a user can bind an OpenGL context to offscreen surfaces, effectively allowing for off-screen rendering to a default framebuffer, allocated by OpenGL itself. The pBuffer functionality has been superseded by the usage of FBOs (Framebuffer Objects). However, pBuffers can be still used with modern OpenGL OpenGL (Open Graphics Library) is a cross-language, cross-platform application programming interface (API) for rendering 2D and 3D vector graphics. The API is typically used to interact with a graphics processing unit (GPU), to achieve ha ... drivers. pBuffers should not be confused with Pixel buffer objects (also named PBOs), which are non-renderable buffers containing raw pixel data. See also * Framebuffer Object * Pixel buffer objects External l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OpenGL ES
OpenGL for Embedded Systems (OpenGL ES or GLES) is a subset of the OpenGL computer graphics rendering application programming interface (API) for rendering 2D and 3D computer graphics such as those used by video games, typically hardware-accelerated using a graphics processing unit (GPU). It is designed for embedded systems like smartphones, tablet computers, video game consoles and PDAs. OpenGL ES is the "most widely deployed 3D graphics API in history". The API is cross-language and multi-platform. The GLU library and the original GLUT are not available for OpenGL ES, freeglut however, supports it. OpenGL ES is managed by the non-profit technology consortium Khronos Group. Vulkan, a next-generation API from Khronos, is made for simpler high performance drivers for mobile and desktop devices. Versions Several versions of the OpenGL ES specification now exist. OpenGL ES 1.0 is drawn up against the OpenGL 1.3 specification, OpenGL ES 1.1 is defined relative to the O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OpenGL
OpenGL (Open Graphics Library) is a cross-language, cross-platform application programming interface (API) for rendering 2D and 3D vector graphics. The API is typically used to interact with a graphics processing unit (GPU), to achieve hardware-accelerated rendering. Silicon Graphics, Inc. (SGI) began developing OpenGL in 1991 and released it on June 30, 1992; applications use it extensively in the fields of computer-aided design (CAD), virtual reality, scientific visualization, information visualization, flight simulation, and video games. Since 2006, OpenGL has been managed by the non-profit technology consortium Khronos Group. Design The OpenGL specification describes an abstract API for drawing 2D and 3D graphics. Although it is possible for the API to be implemented entirely in software, it is designed to be implemented mostly or entirely in hardware. The API is defined as a set of functions which may be called by the client program, alongside a set of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WGL (API)
WGL or Wiggle is an API between OpenGL and the windowing system interface of Windows. WGL is analogous to EGL, which is an interface between rendering APIs such as OpenCL, OpenGL, OpenGL ES or OpenVG and the native platform, as well as to CGL, which is the OS X interface to OpenGL. See also * CGL – the equivalent OS X macOS (; previously OS X and originally Mac OS X) is a Unix operating system developed and marketed by Apple Inc. since 2001. It is the primary operating system for Apple's Mac computers. Within the market of desktop and lapt ... interface to OpenGL * GLX – the equivalent X11 interface to OpenGL * EGL – a similar interface between to OpenGL ES and OpenVG and a windowing system; used by Wayland * GLUT – a higher level interface that hides the differences between WGL, GLX, etc. External linksWGL functions [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EGL (API)
EGL is an interface between Khronos rendering APIs (such as OpenGL, OpenGL ES or OpenVG) and the underlying native platform windowing system. EGL handles graphics context management, surface/ buffer binding, rendering synchronization, and enables "high-performance, accelerated, mixed-mode 2D and 3D rendering using other Khronos APIs." EGL is managed by the non-profit technology consortium Khronos Group. The acronym ''EGL'' is an initialism, which starting from EGL version 1.2 refers to ''Khronos Native Platform Graphics Interface''. Prior to version 1.2, the name of the EGL specification was ''OpenGL ES Native Platform Graphics Interface''. X.Org development documentation glossary defines EGL as "Embedded-System Graphics Library". Adoption * The BlackBerry 10 and BlackBerry Tablet OS mobile device operating system uses EGL for 3D graphics rendering. Both support EGL version 1.4. * The Android mobile device operating system uses EGL for 3D graphics rendering. * The Wayl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pixel Buffer Objects
In digital imaging, a pixel (abbreviated px), pel, or picture element is the smallest addressable element in a raster image upright=1, The Smiley, smiley face in the top left corner is a raster image. When enlarged, individual pixels appear as squares. Enlarging further, each pixel can be analyzed, with their colors constructed through combination of the values for ..., or the smallest point in an all points addressable display device. In most digital display devices, pixels are the smallest element that can be manipulated through software. Each pixel is a Sampling (signal processing), sample of an original image; more samples typically provide more accurate representations of the original. The Intensity (physics), intensity of each pixel is variable. In color imaging systems, a color is typically represented by three or four component intensities such as RGB color model, red, green, and blue, or CMYK color model, cyan, magenta, yellow, and black. In some contexts (such a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
