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Avoid triggering reflow on canvasSize querying

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This commit is contained in:
schmelczerandras 2020-10-25 15:56:20 +01:00
commit 3fb6cc0411
1 changed files with 116 additions and 76 deletions
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11
src/graphics/graphics-library/frame-buffer/frame-buffer.ts
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@ -1,4 +1,4 @@
import { vec2 } from 'gl-matrix';
import { ReadonlyVec2, vec2 } from 'gl-matrix';
import { Texture } from '../texture/texture';
import { UniversalRenderingContext } from '../universal-rendering-context';
@ -26,15 +26,12 @@ export abstract class FrameBuffer {
this.gl.deleteFramebuffer(this.frameBuffer);
}
public setSize(): boolean {
public setSize(canvasSize: ReadonlyVec2): boolean {
const realToCssPixels =
(this.enableHighDpiRendering ? devicePixelRatio : 1) * this.renderScale;
const canvasWidth = (this.gl.canvas as HTMLCanvasElement).clientWidth;
const canvasHeight = (this.gl.canvas as HTMLCanvasElement).clientHeight;
const displayWidth = Math.floor(canvasWidth * realToCssPixels);
const displayHeight = Math.floor(canvasHeight * realToCssPixels);
const displayWidth = Math.floor(canvasSize.x * realToCssPixels);
const displayHeight = Math.floor(canvasSize.y * realToCssPixels);
const oldSize = vec2.clone(this.getSize());
this.size = vec2.fromValues(displayWidth, displayHeight);