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These palettes only have some shades of gray, from black to white (considered the darkest and lightest "grays", respectively). The general rule is that those palettes have 2 n different shades of gray, where n is the number of bits needed to represent a single pixel.
In computer graphics, pixels encoding the RGBA color space information must be stored in computer memory (or in files on disk). In most cases four equal-sized pieces of adjacent memory are used, one for each channel, and a 0 in a channel indicates black color or transparent alpha, while all-1 bits indicates white or fully opaque alpha.
The Direct Rendering Infrastructure (DRI) is the framework comprising the modern Linux graphics stack which allows unprivileged user-space programs to issue commands to graphics hardware without conflicting with other programs. [6] The main use of DRI is to provide hardware acceleration for the Mesa implementation of OpenGL.
The three values of the YCoCg color model are calculated as follows from the three color values of the RGB color model: [2] [] = [] [] The values of Y are in the range from 0 to 1, while Co and Cg are in the range of −0.5 to 0.5, as is typical with "YCC" color models such as YCbCr.
Stack overflow may also refer to: Stack buffer overflow , when a program writes to a memory address on the program's call stack outside of the intended data structure; usually a fixed length buffer Stack Overflow , a question-and-answer website on the topic of computer programming
GL_COMPRESSED_RGB8_ETC2 — Compresses RGB888 data, the followup of ETC1. GL_COMPRESSED_RGBA8_ETC2_EAC — Compresses RGBA8888 data with full alpha support. GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 — Compresses RGBA data where pixels are either fully transparent or fully opaque. sRGB variants of the above codecs are also available.
Additive color mixing: projecting primary color lights on a white surface shows secondary colors where two overlap; the combination of all three primaries in equal intensities makes white.
A stack buffer overflow can be caused deliberately as part of an attack known as stack smashing. If the affected program is running with special privileges, or accepts data from untrusted network hosts (e.g. a webserver ) then the bug is a potential security vulnerability .