@pixi/core
Version:
Core PixiJS
168 lines (167 loc) • 9.86 kB
JavaScript
"use strict";
var constants = require("@pixi/constants"), extensions = require("@pixi/extensions"), utils = require("@pixi/utils"), BaseTexture = require("./BaseTexture.js"), GLTexture = require("./GLTexture.js"), mapInternalFormatToSamplerType = require("./utils/mapInternalFormatToSamplerType.js"), mapTypeAndFormatToInternalFormat = require("./utils/mapTypeAndFormatToInternalFormat.js");
class TextureSystem {
/**
* @param renderer - The renderer this system works for.
*/
constructor(renderer) {
this.renderer = renderer, this.boundTextures = [], this.currentLocation = -1, this.managedTextures = [], this._unknownBoundTextures = !1, this.unknownTexture = new BaseTexture.BaseTexture(), this.hasIntegerTextures = !1;
}
/** Sets up the renderer context and necessary buffers. */
contextChange() {
const gl = this.gl = this.renderer.gl;
this.CONTEXT_UID = this.renderer.CONTEXT_UID, this.webGLVersion = this.renderer.context.webGLVersion, this.internalFormats = mapTypeAndFormatToInternalFormat.mapTypeAndFormatToInternalFormat(gl), this.samplerTypes = mapInternalFormatToSamplerType.mapInternalFormatToSamplerType(gl);
const maxTextures = gl.getParameter(gl.MAX_TEXTURE_IMAGE_UNITS);
this.boundTextures.length = maxTextures;
for (let i = 0; i < maxTextures; i++)
this.boundTextures[i] = null;
this.emptyTextures = {};
const emptyTexture2D = new GLTexture.GLTexture(gl.createTexture());
gl.bindTexture(gl.TEXTURE_2D, emptyTexture2D.texture), gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, new Uint8Array(4)), this.emptyTextures[gl.TEXTURE_2D] = emptyTexture2D, this.emptyTextures[gl.TEXTURE_CUBE_MAP] = new GLTexture.GLTexture(gl.createTexture()), gl.bindTexture(gl.TEXTURE_CUBE_MAP, this.emptyTextures[gl.TEXTURE_CUBE_MAP].texture);
for (let i = 0; i < 6; i++)
gl.texImage2D(gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MAG_FILTER, gl.LINEAR), gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
for (let i = 0; i < this.boundTextures.length; i++)
this.bind(null, i);
}
/**
* Bind a texture to a specific location
*
* If you want to unbind something, please use `unbind(texture)` instead of `bind(null, textureLocation)`
* @param texture - Texture to bind
* @param [location=0] - Location to bind at
*/
bind(texture, location = 0) {
const { gl } = this;
if (texture = texture?.castToBaseTexture(), texture?.valid && !texture.parentTextureArray) {
texture.touched = this.renderer.textureGC.count;
const glTexture = texture._glTextures[this.CONTEXT_UID] || this.initTexture(texture);
this.boundTextures[location] !== texture && (this.currentLocation !== location && (this.currentLocation = location, gl.activeTexture(gl.TEXTURE0 + location)), gl.bindTexture(texture.target, glTexture.texture)), glTexture.dirtyId !== texture.dirtyId ? (this.currentLocation !== location && (this.currentLocation = location, gl.activeTexture(gl.TEXTURE0 + location)), this.updateTexture(texture)) : glTexture.dirtyStyleId !== texture.dirtyStyleId && this.updateTextureStyle(texture), this.boundTextures[location] = texture;
} else
this.currentLocation !== location && (this.currentLocation = location, gl.activeTexture(gl.TEXTURE0 + location)), gl.bindTexture(gl.TEXTURE_2D, this.emptyTextures[gl.TEXTURE_2D].texture), this.boundTextures[location] = null;
}
/** Resets texture location and bound textures Actual `bind(null, i)` calls will be performed at next `unbind()` call */
reset() {
this._unknownBoundTextures = !0, this.hasIntegerTextures = !1, this.currentLocation = -1;
for (let i = 0; i < this.boundTextures.length; i++)
this.boundTextures[i] = this.unknownTexture;
}
/**
* Unbind a texture.
* @param texture - Texture to bind
*/
unbind(texture) {
const { gl, boundTextures } = this;
if (this._unknownBoundTextures) {
this._unknownBoundTextures = !1;
for (let i = 0; i < boundTextures.length; i++)
boundTextures[i] === this.unknownTexture && this.bind(null, i);
}
for (let i = 0; i < boundTextures.length; i++)
boundTextures[i] === texture && (this.currentLocation !== i && (gl.activeTexture(gl.TEXTURE0 + i), this.currentLocation = i), gl.bindTexture(texture.target, this.emptyTextures[texture.target].texture), boundTextures[i] = null);
}
/**
* Ensures that current boundTextures all have FLOAT sampler type,
* see {@link PIXI.SAMPLER_TYPES} for explanation.
* @param maxTextures - number of locations to check
*/
ensureSamplerType(maxTextures) {
const { boundTextures, hasIntegerTextures, CONTEXT_UID } = this;
if (hasIntegerTextures)
for (let i = maxTextures - 1; i >= 0; --i) {
const tex = boundTextures[i];
tex && tex._glTextures[CONTEXT_UID].samplerType !== constants.SAMPLER_TYPES.FLOAT && this.renderer.texture.unbind(tex);
}
}
/**
* Initialize a texture
* @private
* @param texture - Texture to initialize
*/
initTexture(texture) {
const glTexture = new GLTexture.GLTexture(this.gl.createTexture());
return glTexture.dirtyId = -1, texture._glTextures[this.CONTEXT_UID] = glTexture, this.managedTextures.push(texture), texture.on("dispose", this.destroyTexture, this), glTexture;
}
initTextureType(texture, glTexture) {
glTexture.internalFormat = this.internalFormats[texture.type]?.[texture.format] ?? texture.format, glTexture.samplerType = this.samplerTypes[glTexture.internalFormat] ?? constants.SAMPLER_TYPES.FLOAT, this.webGLVersion === 2 && texture.type === constants.TYPES.HALF_FLOAT ? glTexture.type = this.gl.HALF_FLOAT : glTexture.type = texture.type;
}
/**
* Update a texture
* @private
* @param {PIXI.BaseTexture} texture - Texture to initialize
*/
updateTexture(texture) {
const glTexture = texture._glTextures[this.CONTEXT_UID];
if (!glTexture)
return;
const renderer = this.renderer;
if (this.initTextureType(texture, glTexture), texture.resource?.upload(renderer, texture, glTexture))
glTexture.samplerType !== constants.SAMPLER_TYPES.FLOAT && (this.hasIntegerTextures = !0);
else {
const width = texture.realWidth, height = texture.realHeight, gl = renderer.gl;
(glTexture.width !== width || glTexture.height !== height || glTexture.dirtyId < 0) && (glTexture.width = width, glTexture.height = height, gl.texImage2D(
texture.target,
0,
glTexture.internalFormat,
width,
height,
0,
texture.format,
glTexture.type,
null
));
}
texture.dirtyStyleId !== glTexture.dirtyStyleId && this.updateTextureStyle(texture), glTexture.dirtyId = texture.dirtyId;
}
/**
* Deletes the texture from WebGL
* @private
* @param texture - the texture to destroy
* @param [skipRemove=false] - Whether to skip removing the texture from the TextureManager.
*/
destroyTexture(texture, skipRemove) {
const { gl } = this;
if (texture = texture.castToBaseTexture(), texture._glTextures[this.CONTEXT_UID] && (this.unbind(texture), gl.deleteTexture(texture._glTextures[this.CONTEXT_UID].texture), texture.off("dispose", this.destroyTexture, this), delete texture._glTextures[this.CONTEXT_UID], !skipRemove)) {
const i = this.managedTextures.indexOf(texture);
i !== -1 && utils.removeItems(this.managedTextures, i, 1);
}
}
/**
* Update texture style such as mipmap flag
* @private
* @param {PIXI.BaseTexture} texture - Texture to update
*/
updateTextureStyle(texture) {
const glTexture = texture._glTextures[this.CONTEXT_UID];
glTexture && ((texture.mipmap === constants.MIPMAP_MODES.POW2 || this.webGLVersion !== 2) && !texture.isPowerOfTwo ? glTexture.mipmap = !1 : glTexture.mipmap = texture.mipmap >= 1, this.webGLVersion !== 2 && !texture.isPowerOfTwo ? glTexture.wrapMode = constants.WRAP_MODES.CLAMP : glTexture.wrapMode = texture.wrapMode, texture.resource?.style(this.renderer, texture, glTexture) || this.setStyle(texture, glTexture), glTexture.dirtyStyleId = texture.dirtyStyleId);
}
/**
* Set style for texture
* @private
* @param texture - Texture to update
* @param glTexture
*/
setStyle(texture, glTexture) {
const gl = this.gl;
if (glTexture.mipmap && texture.mipmap !== constants.MIPMAP_MODES.ON_MANUAL && gl.generateMipmap(texture.target), gl.texParameteri(texture.target, gl.TEXTURE_WRAP_S, glTexture.wrapMode), gl.texParameteri(texture.target, gl.TEXTURE_WRAP_T, glTexture.wrapMode), glTexture.mipmap) {
gl.texParameteri(texture.target, gl.TEXTURE_MIN_FILTER, texture.scaleMode === constants.SCALE_MODES.LINEAR ? gl.LINEAR_MIPMAP_LINEAR : gl.NEAREST_MIPMAP_NEAREST);
const anisotropicExt = this.renderer.context.extensions.anisotropicFiltering;
if (anisotropicExt && texture.anisotropicLevel > 0 && texture.scaleMode === constants.SCALE_MODES.LINEAR) {
const level = Math.min(texture.anisotropicLevel, gl.getParameter(anisotropicExt.MAX_TEXTURE_MAX_ANISOTROPY_EXT));
gl.texParameterf(texture.target, anisotropicExt.TEXTURE_MAX_ANISOTROPY_EXT, level);
}
} else
gl.texParameteri(texture.target, gl.TEXTURE_MIN_FILTER, texture.scaleMode === constants.SCALE_MODES.LINEAR ? gl.LINEAR : gl.NEAREST);
gl.texParameteri(texture.target, gl.TEXTURE_MAG_FILTER, texture.scaleMode === constants.SCALE_MODES.LINEAR ? gl.LINEAR : gl.NEAREST);
}
destroy() {
this.renderer = null;
}
}
TextureSystem.extension = {
type: extensions.ExtensionType.RendererSystem,
name: "texture"
};
extensions.extensions.add(TextureSystem);
exports.TextureSystem = TextureSystem;
//# sourceMappingURL=TextureSystem.js.map