Mirrors/phaser
2
0
Fork 0
mirror of https://github.com/photonstorm/phaser synced 2024-11-21 20:23:19 +00:00
Code Issues Projects Releases Packages Wiki Activity

Added prerenderclear event to canvas and webgl

Browse source
This commit is contained in:
Richard Davey 2024-09-02 14:18:32 +01:00
parent 426cbe2d95
commit 9eaf661a45
3 changed files with 32 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
src/renderer/canvas/CanvasRenderer.js
View file

@ -354,6 +354,7 @@ var CanvasRenderer = new Class({
* Called at the start of the render loop.
*
* @method Phaser.Renderer.Canvas.CanvasRenderer#preRender
* @fires Phaser.Renderer.Events#PRE_RENDER_CLEAR
* @fires Phaser.Renderer.Events#PRE_RENDER
* @since 3.0.0
*/
@ -369,6 +370,8 @@ var CanvasRenderer = new Class({
ctx.globalCompositeOperation = 'source-over';
ctx.setTransform(1, 0, 0, 1, 0, 0);
this.emit(Events.PRE_RENDER_CLEAR);
if (config.clearBeforeRender)
{
ctx.clearRect(0, 0, width, height);

26
src/renderer/events/PRE_RENDER_CLEAR_EVENT.js Normal file
View file

@ -0,0 +1,26 @@
/**
* @author Richard Davey <rich@phaser.io>
* @copyright 2013-2024 Phaser Studio Inc.
* @license {@link https://opensource.org/licenses/MIT|MIT License}
*/
/**
* The Pre-Render Clear Event.
*
* This event is dispatched by the Phaser Renderer. It happens at the start of the render step, before
* the WebGL gl.clear function has been called. This allows you to toggle the `config.clearBeforeRender` property
* as required, to have fine-grained control over when the canvas is cleared during rendering.
*
* Listen to it from within a Scene using: `this.renderer.events.on('prerenderclear', listener)`.
*
* It's very important to understand that this event is called _before_ the scissor and mask stacks are cleared.
* This means you should not use this event to modify the scissor or mask. Instead, use the `prerender` event for that.
*
* If using the Canvas Renderer, this event is dispatched before the canvas is cleared, but after the context globalAlpha
* and transform have been reset.
*
* @event Phaser.Renderer.Events#PRE_RENDER_CLEAR
* @type {string}
* @since 3.85.0
*/
module.exports = 'prerenderclear';

3
src/renderer/webgl/WebGLRenderer.js
View file

@ -2643,6 +2643,7 @@ var WebGLRenderer = new Class({
* Clears the current vertex buffer and updates pipelines.
*
* @method Phaser.Renderer.WebGL.WebGLRenderer#preRender
* @fires Phaser.Renderer.Events#PRE_RENDER_CLEAR
* @fires Phaser.Renderer.Events#PRE_RENDER
* @since 3.0.0
*/
@ -2655,6 +2656,8 @@ var WebGLRenderer = new Class({
// Make sure we are bound to the main frame buffer
gl.bindFramebuffer(gl.FRAMEBUFFER, null);
this.emit(Events.PRE_RENDER_CLEAR);
if (this.config.clearBeforeRender)
{
var clearColor = this.config.backgroundColor;