预览一致性修复

tests/build-browser-preview-test.js

@@ -12,6 +12,7 @@ const frames=versions.map(version=>{
 	html+=script(fs.readFileSync(path.join(root,'lib',version,'spine-canvas.js'),'utf8'));
 	html+=script(`(async()=>{try{
 		const image=new Image();image.src='data:image/png;base64,${fs.readFileSync(path.join(dir,'spineboy.png')).toString('base64')}';await image.decode();
+		await modules['./spine-webgl-rasterizer.js'].prepareTexture(image,await (await fetch(image.src)).blob());
 		const text=${JSON.stringify(fs.readFileSync(path.join(dir,'spineboy.atlas'),'utf8'))};
 		const texture=new (spine.CanvasTexture||spine.canvas.CanvasTexture)(image);let atlas;
 		if(spine.TextureAtlas.length<=1){atlas=new spine.TextureAtlas(text);for(const page of atlas.pages){if(page.setTexture)page.setTexture(texture);else page.texture=texture}}
@@ -33,6 +34,18 @@ const frames=versions.map(version=>{
 			renderer.draw(skeleton);const pixels=ctx.getImageData(0,0,400,400).data;
 			if(mode===0)normal=pixels;else{let changed=0;for(let i=0;i<pixels.length;i+=4)if(Math.abs(pixels[i]-normal[i])>3)changed++;if(changed<100)throw Error('Slot multiply did not change image');}
 		}
+		let black;
+		for(const tint of [[0,0,0],[0.25,0.5,0.75]]){
+			ctx.setTransform(1,0,0,1,0,0);ctx.fillStyle='#1e1e1e';ctx.fillRect(0,0,400,400);
+			const scale=320/Math.max(size.x,size.y);ctx.translate(200,200);ctx.scale(scale,-scale);ctx.translate(-offset.x-size.x/2,-offset.y-size.y/2);
+			modules['./spine-background.js'].drawCheckerboard(ctx,400,400);
+			for(const slot of skeleton.slots)slot.data.blendMode=0;
+			[skeleton.color.r,skeleton.color.g,skeleton.color.b]=tint;
+			renderer.draw(skeleton);const pixels=ctx.getImageData(0,0,400,400).data;
+			if(tint[0]===0)black=pixels;
+			else{let checked=0,wrong=0;for(let i=0;i<pixels.length;i+=4)for(let c=0;c<3;c++)if(normal[i+c]-black[i+c]>30){checked++;const expected=black[i+c]+(normal[i+c]-black[i+c])*tint[c];if(Math.abs(pixels[i+c]-expected)>5)wrong++;}
+			if(checked<100||wrong>checked*0.01)throw Error('Vertex tint mismatch: '+wrong+'/'+checked);}
+		}
 		renderer.premultipliedAlpha=true;renderer.draw(skeleton);renderer.dispose();
 		parent.postMessage({version,result:'PASS'},'*');
 	}catch(error){parent.postMessage({version,error:error.stack},'*')}})();`);