Package pbr implements Physically-Based Rendering with a Monte Carlo path tracer. [ Documentation ] [ Github ]

• Unbiased Monte-Carlo integration
• Adaptive sampling
• Russian roulette
• Parametric shapes (spheres, cubes)
• Transformation matrices (translate, rotate, scale)
• Physically-based materials
  • Fresnel reflection, transmission, absorption, diffusion
  • Color, refractive indices, gloss, transparency, separate fresnel channels, metals
• Arbitrary light sources ('everything is a light')
• Environment maps
• Physically-based cameras
  • Sensor, aperture, focus, depth-of-field
• Supersampled anti-aliasing
• Fully concurrent with a sequential API

$ go get -u github.com/hunterloftis/pbr/pbr
$ cd $GOPATH/src/github.com/hunterloftis/pbr
$ ./hello

func main() {
	scene := pbr.EmptyScene()
	camera := pbr.NewCamera(960, 540)
	sampler := pbr.NewSampler(camera, scene)
	renderer := pbr.NewRenderer(sampler)

	scene.SetSky(pbr.Vector3{256, 256, 256}, pbr.Vector3{})
	scene.Add(pbr.UnitSphere(pbr.Plastic(1, 0, 0, 1)))

	for sampler.PerPixel() < 200 {
		sampler.Sample()
		fmt.Printf("\r%.1f samples / pixel", sampler.PerPixel())
	}
	pbr.WritePNG("hello.png", renderer.Rgb())
}

$ ./cubes
$ ./render

$ go test ./pbr