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Overhauled generateTexture. Can now update existing texture or draw direct to a canvas.

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This commit is contained in:
Richard Davey 2017-09-21 00:15:52 +01:00
parent cd4d9224d0
commit bbfb8e4f12
1 changed files with 52 additions and 10 deletions
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62
v3/src/gameobjects/graphics/Graphics.js
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@ -394,26 +394,68 @@ var Graphics = new Class({
return this;
},
// If key is a string it'll generate a new texture using it and add it into the
// Texture Manager (assuming no key conflict happens).
//
// If key is a Canvas it will draw the texture to that canvas context. Note that it will NOT
// automatically upload it to the GPU in WebGL mode.
generateTexture: function (key, width, height)
{
if (width === undefined) { width = this.scene.sys.game.config.width; }
if (height === undefined) { height = this.scene.sys.game.config.height; }
var sys = this.scene.sys;
if (width === undefined) { width = sys.game.config.width; }
if (height === undefined) { height = sys.game.config.height; }
Graphics.TargetCamera.setViewport(0, 0, width, height);
Graphics.TargetCamera.scrollX = this.x;
Graphics.TargetCamera.scrollY = this.y;
var texture = this.scene.sys.game.textures.createCanvas(key, width, height);
var ctx = texture.source[0].image.getContext('2d');
var texture;
var ctx;
texture.add('__BASE', 0, 0, 0, width, height);
this.renderCanvas(this.scene.sys.game.renderer, this, 0, Graphics.TargetCamera, ctx);
if (this.gl)
if (typeof key === 'string')
{
this.scene.sys.game.renderer.uploadCanvasToGPU(ctx.canvas, texture.source[0].glTexture, true);
if (sys.textures.exists(key))
{
// Key is a string, it DOES exist in the Texture Manager AND is a canvas, so draw to it
texture = sys.textures.get(key);
var src = texture.getSourceImage();
if (src instanceof HTMLCanvasElement)
{
ctx = src.getContext('2d');
}
}
else
{
// Key is a string and doesn't exist in the Texture Manager, so generate and save it
texture = sys.textures.createCanvas(key, width, height);
ctx = texture.getSourceImage().getContext('2d');
}
}
else if (key instanceof HTMLCanvasElement)
{
// Key is a Canvas, so draw to it
ctx = key.getContext('2d');
}
if (ctx)
{
this.renderCanvas(sys.game.renderer, this, 0, Graphics.TargetCamera, ctx);
if (this.gl && texture)
{
sys.game.renderer.uploadCanvasToGPU(ctx.canvas, texture.source[0].glTexture, true);
}
}
return this;
}
});