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Added viewport and flush helpers

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This commit is contained in:
Richard Davey 2020-11-19 16:40:19 +00:00
parent 6f6fbadfdd
commit 775134ed3b
1 changed files with 49 additions and 4 deletions
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53
src/renderer/webgl/RenderTarget.js
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@ -212,12 +212,23 @@ var RenderTarget = new Class({
*
* If `autoClear` is set, then clears the texture.
*
* If `adjustViewport` is `true` then it will flush the renderer and then adjust the GL viewport.
*
* @method Phaser.Renderer.WebGL.RenderTarget#bind
* @since 3.50.0
*
* @param {boolean} [adjustViewport=false] - Adjust the GL viewport by calling `RenderTarget.adjustViewport` ?
*/
bind: function ()
bind: function (adjustViewport)
{
this.renderer.pushFramebuffer(this.framebuffer);
if (adjustViewport === undefined) { adjustViewport = false; }
if (adjustViewport)
{
this.renderer.flush();
}
this.renderer.pushFramebuffer(this.framebuffer, false, false, false);
if (this.autoClear)
{
@ -227,6 +238,31 @@ var RenderTarget = new Class({
gl.clear(gl.COLOR_BUFFER_BIT);
}
if (adjustViewport)
{
this.adjustViewport();
}
},
/**
* Adjusts the GL viewport to match the WebGL Renderer width and height,
* with a y offset of `RenderTarget.height` - `WebGLRenderer.height`.
*
* @method Phaser.Renderer.WebGL.RenderTarget#adjustViewport
* @since 3.50.0
*/
adjustViewport: function ()
{
var renderer = this.renderer;
var rendererWidth = renderer.width;
var rendererHeight = renderer.height;
var x = 0;
var y = this.height - rendererHeight;
renderer.gl.viewport(x, y, rendererWidth, rendererHeight);
},
/**
@ -249,15 +285,24 @@ var RenderTarget = new Class({
},
/**
* Unbinds this Render Target.
* Unbinds this Render Target and optionally flushes the WebGL Renderer first.
*
* @name Phaser.Renderer.WebGL.RenderTarget#unbind
* @since 3.50.0
*
* @param {boolean} [flush=false] - Flush the WebGL Renderer before unbinding?
*
* @return {WebGLFramebuffer} The Framebuffer that was set, or `null` if there aren't any more in the stack.
*/
unbind: function ()
unbind: function (flush)
{
if (flush === undefined) { flush = false; }
if (flush)
{
this.renderer.flush();
}
return this.renderer.popFramebuffer();
},