cjxgm

# A simple Makefile-based project
MAKE_FLAGS += --no-print-directory

CC = gcc
CXX = g++
LD = $(CXX)

ifneq (, $(shell which ccache 2>/dev/null))
CC := ccache $(CC)
CXX := ccache $(CXX)

cjxgm

Why

You are writing a game in, say GLFW or SDL. Somehow you want to show a fatal error message to the user, preferrably in native style. How?

• On Windows, you can simply call MessageBox() to show such message.
• On Linux, you can use the method below.
• On other platforms, well it's your homework.

How to compile

cjxgm

# Put this into /etc/pacman.d/hooks/
#
# In GNOME Shell 3.36.1 or later versions, if the extensions app (the GUI)
# does not exist, auto updates to extensions will be disabled.
# The check for existence of the extensions app is by checking its .desktop file.
[Trigger]
Operation = Install
Operation = Upgrade
Type = Package
Target = gnome-shell

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@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");

/* Remove "Close" button on the tabs */
#tabbrowser-tabs .tabbrowser-tab .tab-close-button
{
    display: none !important;
}

/* Do not shift up when URL bar is active */
#urlbar[breakout][breakout-extend] {

cjxgm

In this program, extract1 has a different output from all the rest. Why is that? Specifically, why extract1 and extract2 have different outputs?

Can be reproduced in GCC, Clang, ICC, ZapCC, EllCC. But it cannot be reproduced in MSVC.

cjxgm

#version 120
// path: data/core/graphics/shaders/game.glsl

uniform sampler2D gameview; // "diffuse" texture
uniform sampler2D lightmap;

uniform vec4 darkness_data;
uniform vec4 nv_color;
uniform vec4 nv_desaturation_params;
uniform vec4 nv_light_params;

cjxgm

#include <typeinfo>
#include <iostream>

template <template <class...> class T>
auto& template_id()
{
    struct id {};
    return typeid(id);
}

cjxgm

Rust + WebAssembly Guide, on Arch Linux

Motivation

It's just too complex to make Rust+WASM work on macOS, but all the other guides online target macOS. This guide targets only Arch Linux. If your favorate distro is great, you should be able to do the same thing.

Setup

Install rustup and emscripten with the distro's native package manager.

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#include <iostream>
#include <vector>
#include <utility>
#include <string>

#ifdef _NDEBUG
#   define DDD(X...)
#else
#   define DDD(X...) X
#endif

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// ml:std = c++11
#include <iostream>
#include <vector>
#include <unordered_set>
#include <algorithm>

static int costs[512];
static int weights[512][512];
static int nvert;
static constexpr auto inf = 1000000;