jdkanani

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d7samurai

Minimal D3D11 part 2

Follow-up to Minimal D3D11, adding instanced rendering. As before: An uncluttered Direct3D 11 setup & basic rendering primer / API familiarizer. Complete, runnable Windows application contained in a single function and laid out in a linear, step-by-step fashion. No modern C++ / OOP / obscuring cruft.

The main difference here is that the hollow cube is rendered using instancing (which saves a lot of vertices compared to the original, so geometry data is now small enough to be included in the source without being too much in the way), but also all trigonometry and matrix math is moved to the vertex shader, further simplifying the main code.

In this case, each instance is merely this piece of geometry, consisting of 4 triangles:

[![instance

imneme

/*
 * Random-Number Utilities (randutil)
 *     Addresses common issues with C++11 random number generation.
 *     Makes good seeding easier, and makes using RNGs easy while retaining
 *     all the power.
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2015-2022 Melissa E. O'Neill
 *

mmozeiko

extern "C"
{
    int _fltused;

#ifdef _M_IX86 // following functions are needed only for 32-bit architecture

    __declspec(naked) void _ftol2()
    {
        __asm
        {

jakeonrails

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beesandbombs

// "star torus" by davey

int[][] result;
float t, c;

float ease(float p) {
  return 3*p*p - 2*p*p*p;
}

float ease(float p, float g) {

ksmithdev

$fn=10;
union() {
    difference() {
        cylinder(h=4, r=12.5, center=false);
        cylinder(h=1, r=10.5, center=false);
        
        translate([0,0,3])
            cylinder(h=1, r=10.5, center=false);
    }

ksmithdev

layer_height = 0.2;
model_height = 1;

union() {
    for (i=[0:layer_height:model_height]) {
        translate([0,0,i])
            linear_extrude(layer_height)
                offset(-i*0.6)
                    resize([10,10,layer_height])
                        import("Symbol.svg", center = true);

mattdesl

Using data and code from: https://graphics.geometrian.com/research/spectral-primaries.html

See their reference implementation for details (MIT license): https://github.com/geometrian/simple-spectral

This converts sRGB triplet into spectral reflectance, then combines two curves with weighted geometric mean to produce a "mixed" colour.

Installation

aras-p

Right now I can do this in Markdeep source:

------------------
Just a test paragraph, move along...

<div class="note">
Just a note. Don't mind me.
</div>

<div class="warn">