o11c

Note: this was originally several Reddit posts, chained and linked. But now that Reddit is dying I've finally moved them out. Sorry about the mess.

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URL: https://www.reddit.com/r/ProgrammingLanguages/comments/up206c/stack_machines_for_compilers/i8ikupw/ Summary: stack-based vs register-based in general.

There are a wide variety of machines that can be described as "stack-based" or "register-based", but not all of them are practical. And there are a lot of other decisions that affect that practicality (do variables have names or only address/indexes? fixed-width or variable-width instructions? are you interpreting the bytecode (and if so, are you using machine stack frames?) or turning it into machine code? how many registers are there, and how many are special? how do you represent multiple types of variable? how many scopes are there(various kinds of global, local, member, ...)? how much effort/complexity can you afford to put into your machine? etc.)

• a pure stack VM can only access the top elemen

markfink

"""PySide2 & OpenGL sample"""

import sys

from PySide2 import QtCore, QtWidgets, QtOpenGL

try:
    from OpenGL.GL import *
except ImportError:
    app = QtWidgets.QApplication(sys.argv)

viperscape

#include "font.h"
#include "../SDL/SDL.h"
#include <stdio.h>
#include <string.h>

struct font font_init (SDL_Renderer* renderer, char *filename) {
    char filename_[256] = {'\0'};
    strcat(filename_, filename);
    strcat(filename_, ".fnt");

alexsr

// This is a GLSL implementation of
// "Computing the Singular Value Decomposition of 3 x 3 matrices with
// minimal branching and elementary floating point operations"
// by Aleka McAdams et.al.
// http://pages.cs.wisc.edu/~sifakis/papers/SVD_TR1690.pdf

// This should also work on the CPU using glm
// Then you probably should use glm::quat instead of vec4
// and mat3_cast to convert to mat3.

evilactually

if (${CMAKE_HOST_SYSTEM_PROCESSOR} STREQUAL "AMD64")
  set(GLSL_VALIDATOR "$ENV{VULKAN_SDK}/Bin/glslangValidator.exe")
else()
  set(GLSL_VALIDATOR "$ENV{VULKAN_SDK}/Bin32/glslangValidator.exe")
endif()

file(GLOB_RECURSE GLSL_SOURCE_FILES
    "shaders/*.frag"
    "shaders/*.vert"
    )

joshuashaffer

#!/usr/bin/env python
#
# Tests distance between point and triangle in 3D. Aligns and uses 2D technique.
#
# Was originally some code on mathworks

import numpy
from numpy import dot
from math import sqrt