using twgl.js, I keep getting this error when I call twgl.createTexture
. Im making a map using simplex noise from noisejs, and each pixel on the screen has a height value and a moisture value. It worked fine with just a height value, gl.LUMINANCE
, and adjusted size and math, but when I try to add that second component it all falls apart.
last thing: I have an object named 'map' which wraps the functionality of generation
heres the relevant areas of code:
const map = {
gen_map(seed) {
// Generate a map/texture of height and moisture noise
this.raw_data = new Float32Array(innerWidth * innerHeight * 2)
for (let x = 0; x < innerWidth; ++x) {
for (let y = 0; y < innerHeight; ++y) {
// Generate height ---- ---- ----
height = ...
this.raw_data[(y * innerWidth + x) * 2] = height
// Generate moisture ---- ---- ----
let moisture = ...
this.raw_data[(y * innerWidth + x) * 2 + 1] = moisture
}
}
// didnt work either -> this.gl.pixelStorei(this.gl.UNPACK_ALIGNMENT, 1)
// Error occurs here
this.texture = twgl.createTexture(this.gl, {
src: this.raw_data,
width: innerWidth,
height: innerHeight,
format: this.gl.RG, // Also tried this.gl.RG32F, and tried interalFormat aswell
type: this.gl.FLOAT,
})
},
}
completely lost and chatgpt wont help either.
figured it out. gl.RG
and gl.RG32F
are not valid formats in WebGL 1.0. Instead had to use gl.LUMINANCE_ALPHA