evanw’s gists

evanw / chart.png

Created September 20, 2012 03:13

WebSocket Speed Test

evanw / gl.cpp

Created November 11, 2013 01:04

The mandelbulb fractal shader from https://www.shadertoy.com/view/MdfGRr ported to C++ with GLUT. Uses W/A/S/D to rotate and up/down/left/right to move. Compiles on OS X with: g++ main.cpp gl.cpp -framework GLUT -framework OpenGL -Wno-deprecated-declarations

	#include "gl.h"

	mat4 &mat4::transpose() {
	std::swap(m01, m10); std::swap(m02, m20); std::swap(m03, m30);
	std::swap(m12, m21); std::swap(m13, m31); std::swap(m23, m32);
	return *this;
	}

	mat4 &mat4::rotateX(float degrees) {
	float radians = degrees * (M_PI / 180);

evanw / Makefile

Created November 28, 2013 19:33

PNaCl bug with RequestFilteringInputEvents

	SDK = ~/nacl_sdk/pepper_canary

	build:
	$(SDK)/toolchain/mac_pnacl/bin/pnacl-clang++ -o filtering.bc filtering.cpp -O2 -I $(SDK)/include -L $(SDK)/lib/pnacl/Release -lppapi_cpp -lppapi
	$(SDK)/toolchain/mac_pnacl/bin/pnacl-finalize -o filtering.pexe filtering.bc

evanw / main.rs

Created December 29, 2013 05:36

Rust language: Use after free? (rustc 0.8)

	struct Foo {
	x: int
	}

	impl Drop for Foo {
	fn drop(&mut self) {
	println!("drop {}", self.x);
	}
	}

evanw / Makefile

Created January 4, 2014 18:20

C++ memory test compiled using emscripten with 512mb heap

	SOURCES = \
	main.cpp

	CPP_FLAGS = \
	-fno-exceptions \
	-fno-rtti \
	-Wall \
	-Wextra

	JS_FLAGS = \

evanw / Makefile

Created January 28, 2014 20:20

Code generated by emlink is incorrect

	SDK = ~/.emsdk_portable
	JS_FLAGS = -s ASM_JS=1 -O1
	CPP_FLAGS = -std=c++11 -fno-rtti -fno-exceptions

	EMSCRIPTEN_PATH = $(shell $(SDK)/emsdk active_path emscripten-1.7.8)
	CLANG_PATH = $(shell dirname $(shell PATH=$(shell $(SDK)/emsdk active_path clang-3.2-64bit):$(PATH) which clang))
	EMCC = LLVM=$(CLANG_PATH) python $(shell PATH=$(EMSCRIPTEN_PATH):$(PATH) which emcc)
	EMLINK = LLVM=$(CLANG_PATH) python $(shell dirname $(shell PATH=$(EMSCRIPTEN_PATH):$(PATH) which emcc))/emlink.py

	default: cpp_simple cpp_modules js_simple js_modules

evanw / Makefile

Created February 7, 2014 04:34

	SDK = ~/.emsdk_portable

	EMSCRIPTEN_PATH = $(shell $(SDK)/emsdk active_path emscripten-1.7.8)
	CLANG_PATH = $(shell dirname $(shell PATH=$(shell $(SDK)/emsdk active_path clang-3.2-64bit):$(PATH) which clang))
	EMCC = LLVM=$(CLANG_PATH) python $(shell PATH=$(EMSCRIPTEN_PATH):$(PATH) which emcc)

	default: build

	build:
	$(EMCC) main.cpp

evanw / build.sh

Created April 6, 2014 17:17

Google Closure Compiler ignores input source maps

	java \
	-jar compiler.jar \
	--js main.js \
	--compilation_level ADVANCED_OPTIMIZATIONS \
	--js_output_file main.min.js \
	--create_source_map main.min.js.map \
	--source_map_format V3

evanw / meminit.py

Created April 27, 2014 07:01

	import os
	import re
	import json
	import base64

	path = 'compiled.js.mem'
	data = open('compiled.js.mem', 'rb').read()
	print 'data length:', len(data)

	def tinystr(s):

evanw / Makefile

Created September 18, 2014 22:50

Files for https://github.com/kripken/emscripten/issues/2805

	build:
	emcc -O1 -fno-rtti -fno-exceptions temp.c -o temp.js

Evan Wallace evanw