ShaderToy like Go-Lang Render compatible with Pixel Sprites
It still WIP and doesn't present many of the ShaderToy features. But it does run some nice shaders.
package main
import (
"github.com/faiface/pixel"
"github.com/faiface/pixel/pixelgl"
"github.com/racerxdl/gotoyrender/toy"
"golang.org/x/image/colornames"
)
func run() {
cfg := pixelgl.WindowConfig{
Title: "Sample",
Bounds: pixel.R(0, 0, 1024, 768),
}
win, err := pixelgl.NewWindow(cfg)
if err != nil {
panic(err)
}
tr := toy.MakeToyRender(720, 480)
tr.SetFragmentShaderPiece(`
void mainImage( out vec4 fragColor, in vec2 fragCoord ) {
vec2 position = 2. * (fragCoord.xy / iResolution.xy) - 1.;
vec3 colour = vec3(0.0);
float density = 0.15;
float amplitude = 0.3;
float frequency = 5.0;
float scroll = 0.4;
colour += vec3(0.1, 0.05, 0.05) * (1.0 / abs((position.y + (amplitude * sin(((position.x-0.0) + iTime * scroll) *frequency)))) * density);
colour += vec3(0.05, 0.1, 0.05) * (1.0 / abs((position.y + (amplitude * sin(((position.x-0.3) + iTime * scroll) *frequency)))) * density);
colour += vec3(0.05, 0.05, 0.1) * (1.0 / abs((position.y + (amplitude * sin(((position.x-0.6) + iTime * scroll) *frequency)))) * density);
//
fragColor = vec4( colour, 1.0 );
}
`)
//tr.SetTextureData(0, img) Sets the iChannel0 texture to img
for !win.Closed() {
tr.Render()
win.Clear(colornames.Wheat)
tr.Draw(win, pixel.IM.Moved(win.Bounds().Center()))
win.Update()
}
}
func main() {
pixelgl.Run(run)
}TODO
