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TNick
/ test_blas.c
Last active
February 12, 2019 15:33
Some routines to test blas and some code arround it
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| /* | |
| * Author: Nicu Tofan | |
| * License: BSD | |
| * | |
| * See below for getRealTime() license. | |
| */ | |
| #include <cblas.h> |
mblondel
/ matrix_sketch.py
Last active
February 13, 2019 09:26
Frequent directions algorithm for matrix sketching.
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| # (C) Mathieu Blondel, November 2013 | |
| # License: BSD 3 clause | |
| import numpy as np | |
| from scipy.linalg import svd | |
| def frequent_directions(A, ell, verbose=False): | |
| """ | |
| Return the sketch of matrix A. |
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| static const char * const glGetTypeString(GLenum type) | |
| { | |
| switch (type) | |
| { | |
| case GL_BYTE : return "GLbyte"; | |
| case GL_UNSIGNED_BYTE : return "GLubyte"; | |
| case GL_SHORT : return "GLshort"; | |
| case GL_UNSIGNED_SHORT : return "GLushort"; | |
| case GL_INT : return "GLint"; | |
| case GL_UNSIGNED_INT : return "GLuint"; |
bodokaiser
/ pool.c
Last active
July 3, 2023 13:42
Simplistic thread pool implementation with pthread and libuv QUEUE
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| #include "queue.h" | |
| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <unistd.h> | |
| #include <pthread.h> | |
| #define THREADS 3 | |
| /** | |
| * Task queue. |
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| #include <stdio.h> | |
| #define MIN(X,Y) ((X) < (Y) ? (X) : (Y)) | |
| #define min(a, b) \ | |
| ({ __typeof__ (a) _a = (a); \ | |
| __typeof__ (b) _b = (b); \ | |
| _a > _b ? _b : _a; }) | |
| #define max(a, b) \ |
roxlu
/ GridDrawer.cpp
Created
March 5, 2013 12:42
Probably the most basic example of using Texture Buffer Objects (TBOs) with openGL
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| #include "GridDrawer.h" | |
| #include "Grid.h" | |
| GridDrawer::GridDrawer(Grid& grid) | |
| :grid(grid) | |
| ,grid_prog(0) | |
| ,grid_vbo(0) | |
| ,grid_vao(0) | |
| ,u_projection_matrix(0) | |
| { |
liftoff
/ xcb_screenshot.py
Last active
January 21, 2021 10:51
An example of how to capture a screenshot using xpyb (xcb bindings for Python). UPDATED 2013-02-13: Now using PIL's Image.frombuffer() method on the raw image data object given by xcb. It is an order of magnitude faster than converting the xcb object to a Python string and using PIL's Image.fromstring().
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| #!/usr/bin/env python | |
| """ | |
| An example demonstrating how to use xpyb (xcb bindings for Python) to take a | |
| full-screen screenshot. | |
| """ | |
| # Meta | |
| __version__ = '1.0' | |
| __version_info__ = (1, 0) |
Kos
/ formats.txt
Last active
April 18, 2025 02:28
OpenGL image formats along with their unsized variants and preferred formats for pixel transfer (Written by hand, needs verification) Pixel store for compressed textures not provided because there are glCompressedTexImage and family for them. EXT_texture_compression_s3tc formats not included.
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| | Image format (sized) | Unsized | Compr | Pixel format | Pixel type | | |
| |---------------------------------------|--------------------|-------|--------------------|-----------------------------------| | |
| | GL_R8 | GL_RED | False | GL_RED | GL_UNSIGNED_BYTE | | |
| | GL_R8_SNORM | GL_RED | False | GL_RED | GL_BYTE | | |
| | GL_R16 | GL_RED | False | GL_RED | GL_UNSIGNED_SHORT | | |
| | GL_R16_SNORM | GL_RED | False | GL_RED | GL_SHORT | | |
| | GL_R32F | GL_RED | False | GL_RED | GL_FLOAT | | |
| | GL_R8I | GL_RED | False | GL_RED_INTEGER | GL_INT | |
roxlu
/ VideoSurface.cpp
Created
January 29, 2013 11:25
Fast texture uploads using pixel buffer objects. Improved upload of a 768x1366 texture from 16-20ms to 1-3ms (we can improve the performance a bit more by using GPU default pixel formats)
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| #include <shared/VideoSurface.h> | |
| GLuint VideoSurface::prog = 0; | |
| GLint VideoSurface::u_pm = 0; | |
| GLint VideoSurface::u_mm = 0; | |
| GLint VideoSurface::u_tex = 0; | |
| GLfloat VideoSurface::pm[16] = {0}; | |
| VideoSurface::VideoSurface() | |
| :width(0) |
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| /* Eric Meyer's Reset CSS v2.0 (http://meyerweb.com/eric/tools/css/reset/) | |
| --------------------------------------------------------------------------------------- */ | |
| html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video{margin:0;padding:0;border:0;font-size:100%;font:inherit;vertical-align:baseline}article,aside,details,figcaption,figure,footer,header,hgroup,menu,nav,section{display:block}body{line-height:1}ol,ul{list-style:none}blockquote,q{quotes:none}blockquote:before,blockquote:after,q:before,q:after{content:'';content:none}table{border-collapse:collapse;border-spacing:0} |