TresAbhi/blitzkit
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feat: more game parity

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TrèsAbhi committed 2023-12-29 12:41:21 -06:00
1 parent 7b136e61a1
commit b90938108a
2 files changed
+21 -20
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src/core/blitzkrieg/readTexture.ts
+18 -20
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@@ -1,3 +1,4 @@
import { clamp } from 'lodash';
import sharp from 'sharp';
import { Vector3Tuple } from 'three';
import { readDVPLFile } from '../blitz/readDVPLFile';
@@ -35,20 +36,15 @@ export async function readTexture(path: string, options?: ReadTextureOptions) {
switch (options?.mutation) {
case TextureMutation.Normal: {
for (let index = 0; index < channels; index += 4) {
let x = dds.data[index + 3] / 255;
let y = dds.data[index + 1] / 255;
let z = Math.sqrt(1 - x ** 2 - y ** 2);
const hypot = Math.sqrt(x ** 2 + y ** 2 + z ** 2);
// TODO: this math is pretty sus and looks very goofy when rendered
let x = dds.data[index + 3] * (2 / 255) - 1;
let y = dds.data[index + 1] * (2 / 255) - 1;
const underSqrt = 1 - x ** 2 - y ** 2;
let z = underSqrt > 0 ? Math.sqrt(underSqrt) : -Math.sqrt(-underSqrt);
if (isFinite(hypot)) {
x /= hypot;
y /= hypot;
z /= hypot;
}
dds.data[index] = Math.round(x * 255);
dds.data[index + 1] = Math.round(y * 255);
dds.data[index + 2] = Math.round(z * 255);
dds.data[index] = Math.round((x + 1) * (255 / 2));
dds.data[index + 1] = Math.round((y + 1) * (255 / 2));
dds.data[index + 2] = Math.round((z + 1) * (255 / 2));
dds.data[index + 3] = 255;
}
@@ -71,18 +67,20 @@ export async function readTexture(path: string, options?: ReadTextureOptions) {
case TextureMutation.BaseColor: {
for (let index = 0; index < channels; index += 4) {
// treating as pre multiplied but I can't fully confirm
const r = dds.data[index] / 255;
const g = dds.data[index + 1] / 255;
const b = dds.data[index + 2] / 255;
const a = dds.data[index + 3] / 255;
const inverseA = 1 - a;
const mixedR = a * r + inverseA * options.baseColor[0];
const mixedG = a * g + inverseA * options.baseColor[1];
const mixedB = a * b + inverseA * options.baseColor[2];
const invA = 1 - a;
const rPrime = invA * options.baseColor[0] + r;
const gPrime = invA * options.baseColor[1] + g;
const bPrime = invA * options.baseColor[2] + b;
dds.data[index] = mixedR * 255;
dds.data[index + 1] = mixedG * 255;
dds.data[index + 2] = mixedB * 255;
dds.data[index] = Math.round(clamp(rPrime * 255, 0, 255));
dds.data[index + 1] = Math.round(clamp(gPrime * 255, 0, 255));
dds.data[index + 2] = Math.round(clamp(bPrime * 255, 0, 255));
dds.data[index + 3] = 255;
}