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Added support for mipmap texture generation and filter levels

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This commit is contained in:
Richard Davey 2019-11-19 13:00:54 +00:00
parent ffabf069e0
commit 7d53dc3447
1 changed files with 67 additions and 12 deletions
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79
src/renderer/webgl/WebGLRenderer.js
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@ -83,7 +83,8 @@ var WebGLRenderer = new Class({
maxTextures: gameConfig.maxTextures,
maxTextureSize: gameConfig.maxTextureSize,
batchSize: gameConfig.batchSize,
maxLights: gameConfig.maxLights
maxLights: gameConfig.maxLights,
mipmapFilter: gameConfig.mipmapFilter
};
/**
@ -524,6 +525,32 @@ var WebGLRenderer = new Class({
*/
this.nextTypeMatch = false;
/**
* The mipmap magFilter to be used when creating textures.
*
* You can specify this as a string in the game config, i.e.:
*
* `renderer: { mipmapFilter: 'NEAREST_MIPMAP_LINEAR' }`
*
* The 6 options for WebGL1 are, in order from least to most computationally expensive:
*
* NEAREST (for pixel art)
* LINEAR (the default)
* NEAREST_MIPMAP_NEAREST
* LINEAR_MIPMAP_NEAREST
* NEAREST_MIPMAP_LINEAR
* LINEAR_MIPMAP_LINEAR
*
* Mipmaps only work with textures that are fully power-of-two in size.
*
* For more details see https://webglfundamentals.org/webgl/lessons/webgl-3d-textures.html
*
* @name Phaser.Renderer.WebGL.WebGLRenderer#mipmapFilter
* @type {GLenum}
* @since 3.21.0
*/
this.mipmapFilter = null;
this.init(this.config);
},
@ -671,6 +698,9 @@ var WebGLRenderer = new Class({
gl.clearColor(clearColor.redGL, clearColor.greenGL, clearColor.blueGL, clearColor.alphaGL);
// Mipmaps
this.mipmapFilter = gl[config.mipmapFilter];
// Initialize all textures to null
for (var index = 0; index < this.currentTextures.length; ++index)
{
@ -1449,30 +1479,34 @@ var WebGLRenderer = new Class({
createTextureFromSource: function (source, width, height, scaleMode)
{
var gl = this.gl;
var filter = gl.NEAREST;
var minFilter = gl.NEAREST;
var magFilter = gl.NEAREST;
var wrap = gl.CLAMP_TO_EDGE;
var texture = null;
width = source ? source.width : width;
height = source ? source.height : height;
if (IsSizePowerOfTwo(width, height))
var pow = IsSizePowerOfTwo(width, height);
if (pow)
{
wrap = gl.REPEAT;
}
if (scaleMode === CONST.ScaleModes.LINEAR && this.config.antialias)
{
filter = gl.LINEAR;
minFilter = (pow) ? this.mipmapFilter : gl.LINEAR;
magFilter = gl.LINEAR;
}
if (!source && typeof width === 'number' && typeof height === 'number')
{
texture = this.createTexture2D(0, filter, filter, wrap, wrap, gl.RGBA, null, width, height);
texture = this.createTexture2D(0, minFilter, magFilter, wrap, wrap, gl.RGBA, null, width, height);
}
else
{
texture = this.createTexture2D(0, filter, filter, wrap, wrap, gl.RGBA, source);
texture = this.createTexture2D(0, minFilter, magFilter, wrap, wrap, gl.RGBA, source);
}
return texture;
@ -1533,6 +1567,11 @@ var WebGLRenderer = new Class({
gl.texImage2D(gl.TEXTURE_2D, mipLevel, format, format, gl.UNSIGNED_BYTE, pixels);
}
if (IsSizePowerOfTwo(width, height))
{
gl.generateMipmap(gl.TEXTURE_2D);
}
this.setTexture2D(null, 0);
texture.isAlphaPremultiplied = pma;
@ -2334,20 +2373,28 @@ var WebGLRenderer = new Class({
if (flipY === undefined) { flipY = false; }
var gl = this.gl;
var minFilter = gl.NEAREST;
var magFilter = gl.NEAREST;
var width = srcCanvas.width;
var height = srcCanvas.height;
var wrapping = gl.CLAMP_TO_EDGE;
if (!noRepeat && IsSizePowerOfTwo(width, height))
var pow = IsSizePowerOfTwo(width, height);
if (!noRepeat && pow)
{
wrapping = gl.REPEAT;
}
var filter = (this.config.antialias) ? gl.LINEAR : gl.NEAREST;
if (this.config.antialias)
{
minFilter = (pow) ? this.mipmapFilter : gl.LINEAR;
magFilter = gl.LINEAR;
}
return this.createTexture2D(0, filter, filter, wrapping, wrapping, gl.RGBA, srcCanvas, width, height, true, false, flipY);
return this.createTexture2D(0, minFilter, magFilter, wrapping, wrapping, gl.RGBA, srcCanvas, width, height, true, false, flipY);
},
/**
@ -2406,20 +2453,28 @@ var WebGLRenderer = new Class({
if (flipY === undefined) { flipY = false; }
var gl = this.gl;
var minFilter = gl.NEAREST;
var magFilter = gl.NEAREST;
var width = srcVideo.videoWidth;
var height = srcVideo.videoHeight;
var wrapping = gl.CLAMP_TO_EDGE;
if (!noRepeat && IsSizePowerOfTwo(width, height))
var pow = IsSizePowerOfTwo(width, height);
if (!noRepeat && pow)
{
wrapping = gl.REPEAT;
}
var filter = (this.config.antialias) ? gl.LINEAR : gl.NEAREST;
if (this.config.antialias)
{
minFilter = (pow) ? this.mipmapFilter : gl.LINEAR;
magFilter = gl.LINEAR;
}
return this.createTexture2D(0, filter, filter, wrapping, wrapping, gl.RGBA, srcVideo, width, height, true, true, flipY);
return this.createTexture2D(0, minFilter, magFilter, wrapping, wrapping, gl.RGBA, srcVideo, width, height, true, true, flipY);
},
/**