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Fixed colors non premultiplied.

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This commit is contained in:
Davide Tantillo 2025-11-23 12:14:27 +01:00
parent 6a819315e0
commit c43d5154da
2 changed files with 6 additions and 6 deletions
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1
spine-ts/spine-construct3/spine-construct3-lib/src/AssetLoader.ts
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@ -217,7 +217,6 @@ export class AssetLoader {
static async createImageBitmapFromBlob (blob: Blob, pma: boolean): Promise<ImageBitmap | null> {
try {
// pma parameters seems to do not matter here. It matters in C3 Texture creation
return createImageBitmap(blob, { premultiplyAlpha: pma ? "none" : "premultiply" });
} catch (e) {
console.error("Failed to create ImageBitmap from blob:", e);

11
spine-ts/spine-construct3/src/c3runtime/instance.ts
View File

@ -184,13 +184,14 @@ class SpineC3Instance extends globalThis.ISDKWorldInstanceBase {
vertices[dstIndex + 1] = y;
vertices[dstIndex + 2] = 0;
// there's something wrong with the hand after adding the colors on spineboy portal animation
const color = colors[i];
const colorDst = i * 4;
c3colors[colorDst] = (color >>> 16 & 0xFF) * inv255;
c3colors[colorDst + 1] = (color >>> 8 & 0xFF) * inv255;
c3colors[colorDst + 2] = (color & 0xFF) * inv255;
c3colors[colorDst + 3] = (color >>> 24 & 0xFF) * inv255 * this.opacity;
const alpha = (color >>> 24 & 0xFF) * inv255 * this.opacity;
const alphaInverse = inv255 * alpha;
c3colors[colorDst] = (color >>> 16 & 0xFF) * alphaInverse;
c3colors[colorDst + 1] = (color >>> 8 & 0xFF) * alphaInverse;
c3colors[colorDst + 2] = (color & 0xFF) * alphaInverse;
c3colors[colorDst + 3] = alpha;
}
renderer.setTexture(command.texture.texture);