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mmozeiko / write_bmp.c
Created September 23, 2020 00:57
saving simple 32-bit RGBA top-down bmp file
#include <stdarg.h>
#include <stdio.h>
static void write(FILE* f, const char* fmt, ...)
{
va_list ap;
va_start(ap, fmt);
char ch;
while ((ch = *fmt++))
{
@mmozeiko
mmozeiko / astar.h
Last active September 30, 2025 02:05
generic A* in C
// generic A* pathfinding
//
// INTERFACE
//
// mandatory macros
#ifndef ASTAR_POS_TYPE
#error ASTAR_POS_TYPE should specify position type
@mmozeiko
mmozeiko / GLES.txt
Last active July 26, 2020 22:36
Nvidia Jetson Nano info
EGL_VERSION: 1.5
EGL_VENDOR: NVIDIA
EGL_EXTENSIONS:
EGL_EXT_buffer_age, EGL_EXT_client_sync,
EGL_EXT_create_context_robustness, EGL_EXT_output_base,
EGL_EXT_stream_acquire_mode, EGL_EXT_sync_reuse, EGL_IMG_context_priority,
EGL_KHR_config_attribs, EGL_KHR_create_context_no_error,
EGL_KHR_context_flush_control, EGL_KHR_create_context,
EGL_KHR_display_reference, EGL_KHR_fence_sync,
EGL_KHR_get_all_proc_addresses, EGL_KHR_partial_update,
@mmozeiko
mmozeiko / meow_hash_armv8.h
Last active May 22, 2025 09:09
Meow v0.5 in C and ARMv8
#pragma once
#define MEOW_HASH_VERSION 5
#define MEOW_HASH_VERSION_NAME "0.5/calico"
// Meow hash v0.5 with ARMv8 Crypto Extension instructions
// Ported from https://github.com/cmuratori/meow_hash
// Performance on Pine A64 (Cortex-A53, 1.2GHz)
// (compiled with clang v10.0 with -O3 -mcpu=cortex-a53)
@mmozeiko
mmozeiko / meow_hash_c.h
Created June 29, 2020 00:19
Meow v0.5 in C
#pragma once
#define MEOW_HASH_VERSION 5
#define MEOW_HASH_VERSION_NAME "0.5/calico"
// Meow hash v0.5 in C without dependency on special CPU instructions
// Ported from https://github.com/cmuratori/meow_hash
// Performance on Ryzen 9 3950X
// AESNI code = ~16 bytes/cycle
@mmozeiko
mmozeiko / zipit.py
Last active June 25, 2020 00:17
Create zip file with explicitly setting +x permissions
#!/usr/bin/env python3
import os
import os.path
import sys
from datetime import datetime
from zipfile import ZipFile, ZipInfo, ZIP_DEFLATED
# which files to make executable
EXECUTABLE = [
@mmozeiko
mmozeiko / info.txt
Created June 7, 2020 06:35
OpenGL info with mesa v3d on RaspberryPi 4+ with 64-bit ArchLinuxArm (aarch64)
$ cat /etc/issue
Arch Linux \r (\l)
$ uname -a
Linux archlinux 5.4.38-1-ARCH #1 SMP PREEMPT Wed May 6 11:05:57 MDT 2020 aarch64 GNU/Linux
##### EGL info
EGL client extensions = EGL_EXT_client_extensions EGL_EXT_device_base EGL_EXT_device_enumeration EGL_EXT_device_query EGL_EXT_platform_base EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_EXT_platform_device EGL_MESA_platform_gbm EGL_KHR_platform_gbm
@mmozeiko
mmozeiko / xbox_test.c
Last active November 27, 2025 21:02
Getting xbox controller input without xinput
// cl.exe xbox_test.c /link setupapi.lib user32.lib
#include <windows.h>
#include <setupapi.h>
#include <dbt.h>
#include <stdio.h>
/// interface
#define XBOX_MAX_CONTROLLERS 16
@mmozeiko
mmozeiko / demo.c
Last active June 2, 2023 08:39
linux call stack
// gcc -g demo.c -ldl
#define _GNU_SOURCE
#include <stdio.h>
#include <dlfcn.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
@mmozeiko
mmozeiko / capture_desktop_dxgi_gl.c
Last active October 13, 2024 00:45
Capture desktop with IDXGIOutputDuplication and use as OpenGL texture
//
// First download glcorearb.h, wglext.h and platform.h files
// Then compile: cl.exe capture_desktop_dxgi_gl.c /I. d3d11.lib dxgi.lib dxguid.lib gdi32.lib opengl32.lib user32.lib dwmapi.lib
//
#define COBJMACROS
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <d3d11.h>