The RenderState class

Author: photonstorm

src/layer3d/render/RenderState.js

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+/**
+ * @author       Richard Davey <rich@photonstorm.com>
+ * @copyright    2020 Photon Storm Ltd.
+ * @license      {@link https://opensource.org/licenses/MIT|MIT License}
+ */
+
+var BindBuffer = require('./BindBuffer');
+var BindTexture = require('./BindTexture');
+var Class = require('../../utils/Class');
+var ColorBuffer = require('./ColorBuffer');
+var CONST = require('../const');
+var CreateTexture = require('./CreateTexture');
+var DepthBuffer = require('./DepthBuffer');
+var SetActiveTexture = require('./SetActiveTexture');
+var SetBlendMode = require('./SetBlendMode');
+var SetCullFace = require('./SetCullFace');
+var SetFlipSided = require('./SetFlipSided');
+var SetLineWidth = require('./SetLineWidth');
+var SetPolygonOffset = require('./SetPolygonOffset');
+var SetProgram = require('./SetProgram');
+var SetViewport = require('./SetViewport');
+var StencilBuffer = require('./StencilBuffer');
+
+var RenderState = new Class({
+
+    initialize:
+
+    function RenderState (renderer)
+    {
+        var gl = renderer.gl;
+
+        this.gl = gl;
+        this.renderer = renderer;
+
+        this.maxTextures = renderer.coreRenderer.maxTextures;
+        this.lineWidthRange = gl.getParameter(gl.ALIASED_LINE_WIDTH_RANGE);
+
+        this.colorBuffer = new ColorBuffer(this);
+        this.depthBuffer = new DepthBuffer(this);
+        this.stencilBuffer = new StencilBuffer(this);
+
+        this.emptyTextures = {};
+        this.emptyTextures[gl.TEXTURE_2D] = CreateTexture(gl, gl.TEXTURE_2D, gl.TEXTURE_2D, 1);
+        this.emptyTextures[gl.TEXTURE_CUBE_MAP] = CreateTexture(gl, gl.TEXTURE_CUBE_MAP, gl.TEXTURE_CUBE_MAP_POSITIVE_X, 6);
+
+        this.currentRenderTarget = null;
+
+        this.colorBuffer.setClear(0, 0, 0, 1);
+        this.depthBuffer.setClear(1);
+        this.stencilBuffer.setClear(0);
+
+        this.depthBuffer.setTest(true);
+        this.depthBuffer.setFunc(CONST.WEBGL_COMPARE_FUNC.LEQUAL);
+
+        SetCullFace(this, CONST.CULL_FACE_TYPE.BACK);
+        SetFlipSided(this, false);
+    },
+
+    setBlend: function (blend, blendEquation, blendSrc, blendDst, blendEquationAlpha, blendSrcAlpha, blendDstAlpha, premultipliedAlpha)
+    {
+        SetBlendMode(this, blend, blendEquation, blendSrc, blendDst, blendEquationAlpha, blendSrcAlpha, blendDstAlpha, premultipliedAlpha);
+    },
+
+    setFlipSided: function (flipSided)
+    {
+        SetFlipSided(this, flipSided);
+    },
+
+    setCullFace: function (cullFace)
+    {
+        SetCullFace(this, cullFace);
+    },
+
+    viewport: function (x, y, width, height)
+    {
+        SetViewport(this, x, y, width, height);
+    },
+
+    activeTexture: function (textureUnit)
+    {
+        SetActiveTexture(this, textureUnit);
+    },
+
+    bindTexture: function (type, texture)
+    {
+        BindTexture(this, type, texture);
+    },
+
+    bindBuffer: function (type, buffer)
+    {
+        BindBuffer(this, type, buffer);
+    },
+
+    setLineWidth: function (width)
+    {
+        SetLineWidth(this, width);
+    },
+
+    setPolygonOffset: function (polygonOffset, factor, units)
+    {
+        SetPolygonOffset(this, polygonOffset, factor, units);
+    },
+
+    setProgram: function (program)
+    {
+        SetProgram(this, program);
+    }
+
+});
+
+module.exports = RenderState;