jdupuy

// Helper function: sample the visible hemisphere from a spherical cap
vec3 SampleVndf_Hemisphere(vec2 u, vec3 wi)
{
	// sample a spherical cap in (-wi.z, 1]
	float phi = 2.0f * M_PI * u.x;
	float z = fma((1.0f - u.y), (1.0f + wi.z), -wi.z);
	float sinTheta = sqrt(clamp(1.0f - z * z, 0.0f, 1.0f));
	float x = sinTheta * cos(phi);
	float y = sinTheta * sin(phi);
	vec3 c = vec3(x, y, z);

maxwellmlin

mv -v ~/Library/Application\ Support/.lpxuserdata ~/.Trash

raysan5

CUSTOM GAME ENGINES: A Small Study

A couple of weeks ago I played (and finished) A Plague Tale, a game by Asobo Studio. I was really captivated by the game, not only by the beautiful graphics but also by the story and the locations in the game. I decided to investigate a bit about the game tech and I was surprised to see it was developed with a custom engine by a relatively small studio. I know there are some companies using custom engines but it's very difficult to find a detailed market study with that kind of information curated and updated. So this article.

Nowadays lots of companies choose engines like Unreal or Unity for their games (or that's what lot of people think) because d

unitycoder

• https://ec.europa.eu/eurostat/web/gisco/geodata/reference-data/elevation/copernicus-dem/elevation
• http://terrain.party/
• https://tangrams.github.io/heightmapper/
• https://heightmap.skydark.pl/
• https://mapscaping.com/global-elevation-data-download-tool/
• https://portal.opentopography.org/dataCatalog

MulattoKid

Intro #1

I recently decided that I should start to work on my own path tracing "engine" and so here we are. I will try to share as much as possible without it just becoming too much to read. Hopefully what I write will be of some use to others who might run into the same problems I do during this process. Just as a quick disclaimer, here is my setup which I plan to use for throughout the project (hate it or love it, this is what I'm working with):

• Windows 10
• Intel i7-6700K @4.2GHz
• Nvidia GTX 970 (4GB)
• 16GB RAM
• Microsoft Visual Studio Community 2017
• CUDA Toolkit 9.0
• OpenGL 4.3 (I will occasionally work from my laptop which does not support v4.5)
• SDL 2.0

Kos

|          Image format (sized)         |      Unsized       | Compr |    Pixel format    |             Pixel type            |
|---------------------------------------|--------------------|-------|--------------------|-----------------------------------|
| GL_R8                                 | GL_RED             | False | GL_RED             | GL_UNSIGNED_BYTE                  |
| GL_R8_SNORM                           | GL_RED             | False | GL_RED             | GL_BYTE                           |
| GL_R16                                | GL_RED             | False | GL_RED             | GL_UNSIGNED_SHORT                 |
| GL_R16_SNORM                          | GL_RED             | False | GL_RED             | GL_SHORT                          |
| GL_R32F                               | GL_RED             | False | GL_RED             | GL_FLOAT                          |
| GL_R8I                                | GL_RED             | False | GL_RED_INTEGER     | GL_INT                            |