How to use vA method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

VertexArrayFactorySpec.js

Source:VertexArrayFactorySpec.js

1/*global defineSuite*/2defineSuite([3        'Core/ComponentDatatype',4        'Core/Geometry',5        'Core/GeometryAttribute',6        'Core/GeometryPipeline',7        'Core/IndexDatatype',8        'Core/PrimitiveType',9        'Renderer/BufferUsage',10        'Renderer/ClearCommand',11        'Renderer/DrawCommand',12        'Renderer/ShaderProgram',13        'Renderer/VertexArray',14        'Specs/createContext'15    ], 'Renderer/VertexArrayFactory', function(16        ComponentDatatype,17        Geometry,18        GeometryAttribute,19        GeometryPipeline,20        IndexDatatype,21        PrimitiveType,22        BufferUsage,23        ClearCommand,24        DrawCommand,25        ShaderProgram,26        VertexArray,27        createContext) {28    'use strict';2930    var context;31    var va;32    var sp;3334    beforeAll(function() {35        context = createContext();36    });3738    afterAll(function() {39        context.destroyForSpecs();40    });4142    afterEach(function() {43        va = va && va.destroy();44        sp = sp && sp.destroy();45    });4647    it('throws when there is no context', function() {48        expect(function() {49            return VertexArray.fromGeometry();50        }).toThrowDeveloperError();51    });5253    it('creates with no optional arguments', function() {54        va = VertexArray.fromGeometry({55            context : context56        });57        expect(va.numberOfAttributes).toEqual(0);58        expect(va.indexBuffer).not.toBeDefined();59    });6061    it('creates with no geometry', function() {62        va = VertexArray.fromGeometry({63            context : context,64            interleave : true65        });66        expect(va.numberOfAttributes).toEqual(0);67        expect(va.indexBuffer).not.toBeDefined();68    });6970    it('creates a single-attribute vertex (non-interleaved)', function() {71        var geometry = new Geometry({72            attributes : {73                position : new GeometryAttribute({74                    componentDatatype : ComponentDatatype.FLOAT,75                    componentsPerAttribute : 3,76                    values : [0.0, 0.0, 0.0, 1.0, 1.0, 1.0]77                })78            },79            primitiveType : PrimitiveType.POINTS80        });8182        var va = VertexArray.fromGeometry({83            context : context,84            geometry : geometry,85            attributeLocations : GeometryPipeline.createAttributeLocations(geometry)86        });8788        expect(va.numberOfAttributes).toEqual(1);89        expect(va.indexBuffer).not.toBeDefined();9091        var position = geometry.attributes.position;92        expect(va.getAttribute(0).index).toEqual(0);93        expect(va.getAttribute(0).componentDatatype).toEqual(position.componentDatatype);94        expect(va.getAttribute(0).componentsPerAttribute).toEqual(position.componentsPerAttribute);95        expect(va.getAttribute(0).offsetInBytes).toEqual(0);96        expect(va.getAttribute(0).strideInBytes).toEqual(0); // Tightly packed9798        expect(va.getAttribute(0).vertexBuffer.usage).toEqual(BufferUsage.DYNAMIC_DRAW); // Default99    });100101    it('creates a single-attribute vertex (interleaved)', function() {102        var geometry = new Geometry({103            attributes : {104                position : new GeometryAttribute({105                    componentDatatype : ComponentDatatype.FLOAT,106                    componentsPerAttribute : 3,107                    values : [0.0, 0.0, 0.0, 1.0, 1.0, 1.0]108                })109            },110            primitiveType : PrimitiveType.POINTS111        });112113        var va = VertexArray.fromGeometry({114            context : context,115            geometry : geometry,116            attributeLocations : GeometryPipeline.createAttributeLocations(geometry),117            interleave : true,118            bufferUsage : BufferUsage.STATIC_DRAW119        });120121        expect(va.numberOfAttributes).toEqual(1);122        expect(va.indexBuffer).not.toBeDefined();123124        var position = geometry.attributes.position;125        expect(va.getAttribute(0).index).toEqual(0);126        expect(va.getAttribute(0).componentDatatype).toEqual(position.componentDatatype);127        expect(va.getAttribute(0).componentsPerAttribute).toEqual(position.componentsPerAttribute);128        expect(va.getAttribute(0).offsetInBytes).toEqual(0);129        expect(va.getAttribute(0).strideInBytes).toEqual(ComponentDatatype.getSizeInBytes(position.componentDatatype) * position.componentsPerAttribute);130131        expect(va.getAttribute(0).vertexBuffer.usage).toEqual(BufferUsage.STATIC_DRAW);132    });133134    it('creates a homogeneous multiple-attribute vertex (non-interleaved)', function() {135        var geometry = new Geometry({136            attributes : {137                customPosition : new GeometryAttribute({138                    componentDatatype : ComponentDatatype.FLOAT,139                    componentsPerAttribute : 3,140                    values : [0.0, 0.0, 0.0, 2.0, 2.0, 2.0]141                }),142                customNormal : new GeometryAttribute({143                    componentDatatype : ComponentDatatype.FLOAT,144                    componentsPerAttribute : 3,145                    values : [1.0, 1.0, 1.0, 3.0, 3.0, 3.0]146                })147            },148            primitiveType : PrimitiveType.POINTS149        });150151        var va = VertexArray.fromGeometry({152            context : context,153            geometry : geometry,154            attributeLocations : GeometryPipeline.createAttributeLocations(geometry)155        });156157        expect(va.numberOfAttributes).toEqual(2);158        expect(va.indexBuffer).not.toBeDefined();159160        var position = geometry.attributes.customPosition;161        expect(va.getAttribute(0).index).toEqual(0);162        expect(va.getAttribute(0).componentDatatype).toEqual(position.componentDatatype);163        expect(va.getAttribute(0).componentsPerAttribute).toEqual(position.componentsPerAttribute);164        expect(va.getAttribute(0).offsetInBytes).toEqual(0);165        expect(va.getAttribute(0).strideInBytes).toEqual(0); // Tightly packed166167        var normal = geometry.attributes.customNormal;168        expect(va.getAttribute(1).index).toEqual(1);169        expect(va.getAttribute(1).componentDatatype).toEqual(normal.componentDatatype);170        expect(va.getAttribute(1).componentsPerAttribute).toEqual(normal.componentsPerAttribute);171        expect(va.getAttribute(1).offsetInBytes).toEqual(0);172        expect(va.getAttribute(1).strideInBytes).toEqual(0); // Tightly packed173174        expect(va.getAttribute(0).vertexBuffer).not.toBe(va.getAttribute(1).vertexBuffer);175    });176177    it('creates a homogeneous multiple-attribute vertex (interleaved)', function() {178        var geometry = new Geometry({179            attributes : {180                customPosition : new GeometryAttribute({181                    componentDatatype : ComponentDatatype.FLOAT,182                    componentsPerAttribute : 3,183                    values : [0.0, 0.0, 0.0, 2.0, 2.0, 2.0]184                }),185                customNormal : new GeometryAttribute({186                    componentDatatype : ComponentDatatype.FLOAT,187                    componentsPerAttribute : 3,188                    values : [1.0, 1.0, 1.0, 3.0, 3.0, 3.0]189                })190            },191            primitiveType : PrimitiveType.POINTS192        });193194        var va = VertexArray.fromGeometry({195            context : context,196            geometry : geometry,197            attributeLocations : GeometryPipeline.createAttributeLocations(geometry),198            interleave : true199        });200201        expect(va.numberOfAttributes).toEqual(2);202        expect(va.indexBuffer).not.toBeDefined();203204        var position = geometry.attributes.customPosition;205        var normal = geometry.attributes.customNormal;206        var expectedStride = ComponentDatatype.getSizeInBytes(position.componentDatatype) * position.componentsPerAttribute + ComponentDatatype.getSizeInBytes(normal.componentDatatype) * normal.componentsPerAttribute;207208        expect(va.getAttribute(0).index).toEqual(0);209        expect(va.getAttribute(0).componentDatatype).toEqual(position.componentDatatype);210        expect(va.getAttribute(0).componentsPerAttribute).toEqual(position.componentsPerAttribute);211        expect(va.getAttribute(0).offsetInBytes).toEqual(0);212        expect(va.getAttribute(0).strideInBytes).toEqual(expectedStride);213214        expect(va.getAttribute(1).index).toEqual(1);215        expect(va.getAttribute(1).componentDatatype).toEqual(normal.componentDatatype);216        expect(va.getAttribute(1).componentsPerAttribute).toEqual(normal.componentsPerAttribute);217        expect(va.getAttribute(1).offsetInBytes).toEqual(ComponentDatatype.getSizeInBytes(position.componentDatatype) * position.componentsPerAttribute);218        expect(va.getAttribute(1).strideInBytes).toEqual(expectedStride);219220        expect(va.getAttribute(0).vertexBuffer).toBe(va.getAttribute(1).vertexBuffer);221    });222223    it('creates a heterogeneous multiple-attribute vertex (interleaved)', function() {224        var geometry = new Geometry({225            attributes : {226                position : new GeometryAttribute({227                    componentDatatype : ComponentDatatype.FLOAT,228                    componentsPerAttribute : 3,229                    values : [0.0, 0.0, 0.0, 2.0, 2.0, 2.0]230                }),231                colors : new GeometryAttribute({232                    componentDatatype : ComponentDatatype.UNSIGNED_BYTE,233                    componentsPerAttribute : 4,234                    values : [1, 1, 1, 1, 2, 2, 2, 2]235                })236            },237            primitiveType : PrimitiveType.POINTS238        });239240        var va = VertexArray.fromGeometry({241            context : context,242            geometry : geometry,243            attributeLocations : GeometryPipeline.createAttributeLocations(geometry),244            interleave : true245        });246247        expect(va.numberOfAttributes).toEqual(2);248        expect(va.indexBuffer).not.toBeDefined();249250        var position = geometry.attributes.position;251        var colors = geometry.attributes.colors;252        var expectedStride = ComponentDatatype.getSizeInBytes(position.componentDatatype) * position.componentsPerAttribute + ComponentDatatype.getSizeInBytes(colors.componentDatatype) * colors.componentsPerAttribute;253254        expect(va.getAttribute(0).index).toEqual(0);255        expect(va.getAttribute(0).componentDatatype).toEqual(position.componentDatatype);256        expect(va.getAttribute(0).componentsPerAttribute).toEqual(position.componentsPerAttribute);257        expect(va.getAttribute(0).offsetInBytes).toEqual(0);258        expect(va.getAttribute(0).strideInBytes).toEqual(expectedStride);259260        expect(va.getAttribute(1).index).toEqual(1);261        expect(va.getAttribute(1).componentDatatype).toEqual(colors.componentDatatype);262        expect(va.getAttribute(1).componentsPerAttribute).toEqual(colors.componentsPerAttribute);263        expect(va.getAttribute(1).offsetInBytes).toEqual(ComponentDatatype.getSizeInBytes(position.componentDatatype) * position.componentsPerAttribute);264        expect(va.getAttribute(1).strideInBytes).toEqual(expectedStride);265266        expect(va.getAttribute(0).vertexBuffer).toBe(va.getAttribute(1).vertexBuffer);267    });268269    it('sorts interleaved attributes from large to small components', function() {270        var geometry = new Geometry({271            attributes : {272                bytes : new GeometryAttribute({273                    componentDatatype : ComponentDatatype.BYTE,274                    componentsPerAttribute : 1,275                    values : [0]276                }),277                shorts : new GeometryAttribute({278                    componentDatatype : ComponentDatatype.SHORT,279                    componentsPerAttribute : 1,280                    values : [1]281                }),282                floats : new GeometryAttribute({283                    componentDatatype : ComponentDatatype.FLOAT,284                    componentsPerAttribute : 1,285                    values : [2]286                })287            },288            primitiveType : PrimitiveType.POINTS289        });290291        var attributeLocations = GeometryPipeline.createAttributeLocations(geometry);292        var va = VertexArray.fromGeometry({293            context : context,294            geometry : geometry,295            attributeLocations : attributeLocations,296            interleave : true297        });298299        expect(va.numberOfAttributes).toEqual(3);300301        var vertexBuffer = va.getAttribute(0).vertexBuffer;302        expect(vertexBuffer).toBe(va.getAttribute(1).vertexBuffer);303        expect(vertexBuffer).toBe(va.getAttribute(2).vertexBuffer);304        expect(vertexBuffer.sizeInBytes).toEqual(8); // Includes 1 byte per-vertex padding305306        // Validate via rendering307        var vs =308            'attribute float bytes; ' +309            'attribute float shorts; ' +310            'attribute float floats; ' +311            'varying vec4 fsColor; ' +312            'void main() { ' +313            '  gl_PointSize = 1.0; ' +314            '  gl_Position = vec4(0.0, 0.0, 0.0, 1.0); ' +315            '  fsColor = vec4((bytes == 0.0) && (shorts == 1.0) && (floats == 2.0)); ' +316            '}';317        var fs =318            'varying vec4 fsColor; ' +319            'void main() { ' +320            '  gl_FragColor = fsColor; ' +321            '}';322323        sp = ShaderProgram.fromCache({324            context : context,325            vertexShaderSource : vs,326            fragmentShaderSource : fs,327            attributeLocations : attributeLocations328        });329330        ClearCommand.ALL.execute(context);331        expect(context).toReadPixels([0, 0, 0, 255]);332333        var command = new DrawCommand({334            primitiveType : PrimitiveType.POINTS,335            shaderProgram : sp,336            vertexArray : va337        });338        command.execute(context);339        expect(context).toReadPixels([255, 255, 255, 255]);340    });341342    it('sorts interleaved attributes from large to small components (2)', function() {343        var geometry = new Geometry({344            attributes : {345                color : new GeometryAttribute({346                    componentDatatype : ComponentDatatype.UNSIGNED_BYTE,347                    componentsPerAttribute : 4,348                    normalize : true,349                    values : [255, 0, 0, 255, 0, 255, 0, 255]350                }),351                position : new GeometryAttribute({352                    componentDatatype : ComponentDatatype.FLOAT,353                    componentsPerAttribute : 3,354                    values : [0.0, 0.0, 0.0, 0.0, 0.0, 0.0]355                })356            },357            primitiveType : PrimitiveType.POINTS358        });359360        var attributeLocations = GeometryPipeline.createAttributeLocations(geometry);361        var va = VertexArray.fromGeometry({362            context : context,363            geometry : geometry,364            attributeLocations : attributeLocations,365            interleave : true366        });367368        expect(va.getAttribute(0).vertexBuffer.sizeInBytes).toEqual(32); // No per-vertex padding needed369370        // Validate via rendering371        var vs =372            'attribute vec3 position; ' +373            'attribute vec4 color; ' +374            'varying vec4 fsColor; ' +375            'void main() { ' +376            '  gl_PointSize = 1.0; ' +377            '  gl_Position = vec4(position, 1.0); ' +378            '  fsColor = color; ' +379            '}';380        var fs =381            'varying vec4 fsColor; ' +382            'void main() { ' +383            '  gl_FragColor = fsColor; ' +384            '}';385        sp = ShaderProgram.fromCache({386            context : context,387            vertexShaderSource : vs,388            fragmentShaderSource : fs,389            attributeLocations : attributeLocations390        });391392        ClearCommand.ALL.execute(context);393        expect(context).toReadPixels([0, 0, 0, 255]);394395        var command = new DrawCommand({396            primitiveType : PrimitiveType.POINTS,397            shaderProgram : sp,398            vertexArray : va,399            offset : 0,400            count : 1401        });402        command.execute(context);403        expect(context).toReadPixels([255, 0, 0, 255]);404405        command = new DrawCommand({406            primitiveType : PrimitiveType.POINTS,407            shaderProgram : sp,408            vertexArray : va,409            offset : 1,410            count : 1411        });412        command.execute(context);413        expect(context).toReadPixels([0, 255, 0, 255]);414    });415416    it('sorts interleaved attributes from large to small components (3)', function() {417        var geometry = new Geometry({418            attributes : {419                unsignedByteAttribute : new GeometryAttribute({420                    componentDatatype : ComponentDatatype.UNSIGNED_BYTE,421                    componentsPerAttribute : 2,422                    values : [1, 2]423                }),424                unsignedShortAttribute : new GeometryAttribute({425                    componentDatatype : ComponentDatatype.UNSIGNED_SHORT,426                    componentsPerAttribute : 1,427                    values : [3]428                }),429                byteAttribute : new GeometryAttribute({430                    componentDatatype : ComponentDatatype.BYTE,431                    componentsPerAttribute : 1,432                    values : [4]433                }),434                shortAttribute : new GeometryAttribute({435                    componentDatatype : ComponentDatatype.SHORT,436                    componentsPerAttribute : 1,437                    values : [5]438                })439            },440            primitiveType : PrimitiveType.POINTS441        });442443        var attributeLocations = GeometryPipeline.createAttributeLocations(geometry);444        var va = VertexArray.fromGeometry({445            context : context,446            geometry : geometry,447            attributeLocations : attributeLocations,448            interleave : true449        });450451        expect(va.numberOfAttributes).toEqual(4);452        expect(va.getAttribute(0).vertexBuffer.sizeInBytes).toEqual(8); // Includes 1 byte per-vertex padding453454        // Validate via rendering455        var vs =456            'attribute vec2 unsignedByteAttribute; ' +457            'attribute float unsignedShortAttribute; ' +458            'attribute float byteAttribute; ' +459            'attribute float shortAttribute; ' +460            'varying vec4 fsColor; ' +461            'void main() { ' +462            '  gl_PointSize = 1.0; ' +463            '  gl_Position = vec4(0.0, 0.0, 0.0, 1.0); ' +464            '  fsColor = vec4((unsignedByteAttribute.x == 1.0) && (unsignedByteAttribute.y == 2.0) && (unsignedShortAttribute == 3.0) && (byteAttribute == 4.0) && (shortAttribute == 5.0)); ' +465            '}';466        var fs =467            'varying vec4 fsColor; ' +468            'void main() { ' +469            '  gl_FragColor = fsColor; ' +470            '}';471        sp = ShaderProgram.fromCache({472            context : context,473            vertexShaderSource : vs,474            fragmentShaderSource : fs,475            attributeLocations : attributeLocations476        });477478        ClearCommand.ALL.execute(context);479        expect(context).toReadPixels([0, 0, 0, 255]);480481        var command = new DrawCommand({482            primitiveType : PrimitiveType.POINTS,483            shaderProgram : sp,484            vertexArray : va485        });486        command.execute(context);487        expect(context).toReadPixels([255, 255, 255, 255]);488    });489490    it('creates a custom interleaved vertex', function() {491        var geometry = new Geometry({492            attributes : {493                position : new GeometryAttribute({494                    componentDatatype : ComponentDatatype.FLOAT,495                    componentsPerAttribute : 3,496                    values : [0.0, 0.0, 0.0, 0.0, 0.0, 0.0]497                }),498                color : new GeometryAttribute({499                    componentDatatype : ComponentDatatype.UNSIGNED_BYTE,500                    componentsPerAttribute : 3,501                    normalize : true,502                    values : [255, 0, 0, 0, 255, 0]503                }),504                normal : new GeometryAttribute({505                    componentDatatype : ComponentDatatype.FLOAT,506                    componentsPerAttribute : 3,507                    values : [1.0, 0.0, 0.0, 0.0, 1.0, 0.0]508                }),509                temperature : new GeometryAttribute({510                    componentDatatype : ComponentDatatype.UNSIGNED_SHORT,511                    componentsPerAttribute : 1,512                    values : [75, 100]513                })514            },515            primitiveType : PrimitiveType.POINTS516        });517518        var attributeLocations = GeometryPipeline.createAttributeLocations(geometry);519        var va = VertexArray.fromGeometry({520            context : context,521            geometry : geometry,522            attributeLocations : attributeLocations,523            interleave : true524        });525526        expect(va.getAttribute(0).vertexBuffer.sizeInBytes).toEqual(2 * 32); // Includes 3 byte per-vertex padding527528        // Validate via rendering529        var vs =530            'attribute vec3 position; ' +531            'attribute vec3 color; ' +532            'attribute vec3 normal; ' +533            'attribute float temperature; ' +534            'varying vec4 fsColor; ' +535            'void main() { ' +536            '  gl_PointSize = 1.0; ' +537            '  gl_Position = vec4(position, 1.0); ' +538            '  if ((normal == vec3(1.0, 0.0, 0.0)) && (temperature == 75.0)) { ' +539            '    fsColor = vec4(color, 1.0); ' +540            '  } ' +541            '  else {' +542            '    fsColor = vec4(1.0); ' +543            '  }' +544            '}';545        var fs =546            'varying vec4 fsColor; ' +547            'void main() { ' +548            '  gl_FragColor = fsColor; ' +549            '}';550        sp = ShaderProgram.fromCache({551            context : context,552            vertexShaderSource : vs,553            fragmentShaderSource : fs,554            attributeLocations : attributeLocations555        });556557        ClearCommand.ALL.execute(context);558        expect(context).toReadPixels([0, 0, 0, 255]);559560        var command = new DrawCommand({561            primitiveType : PrimitiveType.POINTS,562            shaderProgram : sp,563            vertexArray : va,564            offset : 0,565            count : 1566        });567        command.execute(context);568        expect(context).toReadPixels([255, 0, 0, 255]);569570        var vs2 =571            'attribute vec3 position; ' +572            'attribute vec3 color; ' +573            'attribute vec3 normal; ' +574            'attribute float temperature; ' +575            'varying vec4 fsColor; ' +576            'void main() { ' +577            '  gl_PointSize = 1.0; ' +578            '  gl_Position = vec4(position, 1.0); ' +579            '  if ((normal == vec3(0.0, 1.0, 0.0)) && (temperature == 100.0)) { ' +580            '    fsColor = vec4(color, 1.0); ' +581            '  } ' +582            '  else {' +583            '    fsColor = vec4(1.0); ' +584            '  }' +585            '}';586        sp = sp.destroy();587        sp = ShaderProgram.fromCache({588            context : context,589            vertexShaderSource : vs2,590            fragmentShaderSource : fs,591            attributeLocations : attributeLocations592        });593594        command = new DrawCommand({595            primitiveType : PrimitiveType.POINTS,596            shaderProgram : sp,597            vertexArray : va,598            offset : 1,599            count : 1600        });601        command.execute(context);602        expect(context).toReadPixels([0, 255, 0, 255]);603    });604605    it('creates an index buffer', function() {606        var geometry = new Geometry({607            attributes : {},608            indices : [0],609            primitiveType : PrimitiveType.POINTS610        });611612        var va = VertexArray.fromGeometry({613            context : context,614            geometry : geometry615        });616617        expect(va.numberOfAttributes).toEqual(0);618        expect(va.indexBuffer).toBeDefined();619        expect(va.indexBuffer.usage).toEqual(BufferUsage.DYNAMIC_DRAW); // Default620        expect(va.indexBuffer.indexDatatype).toEqual(IndexDatatype.UNSIGNED_SHORT);621        expect(va.indexBuffer.numberOfIndices).toEqual(geometry.indices.length);622    });623624    it('throws with different number of interleaved attributes', function() {625        var geometry = new Geometry({626            attributes : {627                position : new GeometryAttribute({628                    componentDatatype : ComponentDatatype.FLOAT,629                    componentsPerAttribute : 1,630                    values : [0.0]631                }),632                normal : new GeometryAttribute({633                    componentDatatype : ComponentDatatype.FLOAT,634                    componentsPerAttribute : 1,635                    values : [1.0, 2.0]636                })637            },638            primitiveType : PrimitiveType.POINTS639        });640641        expect(function() {642            return VertexArray.fromGeometry({643                context : context,644                geometry : geometry,645                interleave : true646            });647        }).toThrowRuntimeError();648    });649650    it('throws with duplicate indices', function() {651        var geometry = new Geometry({652            attributes : {653                position : new GeometryAttribute({654                    componentDatatype : ComponentDatatype.FLOAT,655                    componentsPerAttribute : 1,656                    values : [0.0]657                }),658                normal : new GeometryAttribute({659                    componentDatatype : ComponentDatatype.FLOAT,660                    componentsPerAttribute : 1,661                    values : [1.0]662                })663            },664            primitiveType : PrimitiveType.POINTS665        });666667        expect(function() {668            return VertexArray.fromGeometry({669                context : context,670                geometry : geometry,671                attributeLocations : {672                    position : 0,673                    normal : 0674                }675            });676        }).toThrowDeveloperError();677    });
...

VertexArraySpec.js

Source:VertexArraySpec.js

1/*global defineSuite*/2defineSuite([3        'Renderer/VertexArray',4        'Core/ComponentDatatype',5        'Core/PrimitiveType',6        'Renderer/Buffer',7        'Renderer/BufferUsage',8        'Renderer/DrawCommand',9        'Renderer/ShaderProgram',10        'Specs/createContext'11    ], function(12        VertexArray,13        ComponentDatatype,14        PrimitiveType,15        Buffer,16        BufferUsage,17        DrawCommand,18        ShaderProgram,19        createContext) {20    'use strict';2122    var context;2324    beforeAll(function() {25        context = createContext();26    });2728    afterAll(function() {29        context.destroyForSpecs();30    });3132    it('binds', function() {33        var positionBuffer = Buffer.createVertexBuffer({34            context : context,35            sizeInBytes : 3,36            usage : BufferUsage.STATIC_DRAW37        });3839        var attributes = [{40            index : 0,41            enabled : true,42            vertexBuffer : positionBuffer,43            componentsPerAttribute : 3,44            componentDatatype : ComponentDatatype.FLOAT,45            normalize : false,46            offsetInBytes : 0,47            strideInBytes : 0,48            instanceDivisor : 049        // tightly packed50        }];5152        var va = new VertexArray({53            context : context,54            attributes : attributes55        });56        va._bind();57        va._unBind();58        va = va.destroy();59    });6061    it('binds with default values', function() {62        var positionBuffer = Buffer.createVertexBuffer({63            context : context,64            sizeInBytes : 3,65            usage : BufferUsage.STATIC_DRAW66        });6768        var attributes = [{69            vertexBuffer : positionBuffer,70            componentsPerAttribute : 371        }];7273        var va = new VertexArray({74            context : context,75            attributes : attributes76        });7778        expect(va.numberOfAttributes).toEqual(1);79        expect(va.getAttribute(0).index).toEqual(0);80        expect(va.getAttribute(0).enabled).toEqual(true);81        expect(va.getAttribute(0).vertexBuffer).toEqual(positionBuffer);82        expect(va.getAttribute(0).componentsPerAttribute).toEqual(3);83        expect(va.getAttribute(0).componentDatatype).toEqual(ComponentDatatype.FLOAT);84        expect(va.getAttribute(0).normalize).toEqual(false);85        expect(va.getAttribute(0).offsetInBytes).toEqual(0);86        expect(va.getAttribute(0).strideInBytes).toEqual(0);87        expect(va.getAttribute(0).instanceDivisor).toEqual(0);8889        va._bind();90        va._unBind();91        va = va.destroy();92    });9394    it('binds with multiple buffers', function() {95        var attributeSize = 3 * Float32Array.BYTES_PER_ELEMENT;96        var positionBuffer = Buffer.createVertexBuffer({97            context : context,98            sizeInBytes : attributeSize,99            usage : BufferUsage.STATIC_DRAW100        });101        var normalBuffer = Buffer.createVertexBuffer({102            context : context,103            sizeInBytes : attributeSize,104            usage : BufferUsage.STATIC_DRAW105        });106107        var attributes = [{108            index : 0,109            vertexBuffer : positionBuffer,110            componentsPerAttribute : 3,111            componentDatatype : ComponentDatatype.FLOAT112        }, {113            index : 1,114            vertexBuffer : normalBuffer,115            componentsPerAttribute : 3,116            componentDatatype : ComponentDatatype.FLOAT117        }];118119        var va = new VertexArray({120            context : context,121            attributes : attributes122        });123124        expect(va.numberOfAttributes).toEqual(2);125        va._bind();126        va._unBind();127        va = va.destroy();128    });129130    it('binds with interleaved buffer', function() {131        var attributeSize = 3 * Float32Array.BYTES_PER_ELEMENT;132        var buffer = Buffer.createVertexBuffer({133            context : context,134            sizeInBytes : attributeSize,135            usage : BufferUsage.STATIC_DRAW136        });137138        var attributes = [{139            vertexBuffer : buffer,140            componentsPerAttribute : 3,141            componentDatatype : ComponentDatatype.FLOAT,142            offsetInBytes : 0,143            strideInBytes : 2 * attributeSize144        }, {145            vertexBuffer : buffer,146            componentsPerAttribute : 3,147            componentDatatype : ComponentDatatype.FLOAT,148            normalize : true,149            offsetInBytes : attributeSize,150            strideInBytes : 2 * attributeSize151        }];152153        var va = new VertexArray({154            context : context,155            attributes : attributes156        });157158        expect(va.numberOfAttributes).toEqual(2);159        va._bind();160        va._unBind();161        va = va.destroy();162    });163164    it('adds attributes', function() {165        var positionBuffer = Buffer.createVertexBuffer({166            context : context,167            sizeInBytes : 3,168            usage : BufferUsage.STATIC_DRAW169        });170171        var va = new VertexArray({172            context : context,173            attributes : [{174                vertexBuffer : positionBuffer,175                componentsPerAttribute : 3176            }]177        });178179        expect(va.numberOfAttributes).toEqual(1);180        expect(va.getAttribute(0).index).toEqual(0);181        expect(va.getAttribute(0).enabled).toEqual(true);182        expect(va.getAttribute(0).vertexBuffer).toEqual(positionBuffer);183        expect(va.getAttribute(0).componentsPerAttribute).toEqual(3);184        expect(va.getAttribute(0).componentDatatype).toEqual(ComponentDatatype.FLOAT);185        expect(va.getAttribute(0).normalize).toEqual(false);186        expect(va.getAttribute(0).offsetInBytes).toEqual(0);187        expect(va.getAttribute(0).strideInBytes).toEqual(0);188        expect(va.getAttribute(0).instanceDivisor).toEqual(0);189190        va = va.destroy();191    });192193    it('modifies attributes', function() {194        var buffer = Buffer.createVertexBuffer({195            context : context,196            sizeInBytes : 6,197            usage : BufferUsage.STATIC_DRAW198        });199200        var attributes = [{201            vertexBuffer : buffer,202            componentsPerAttribute : 3203        }];204205        var va = new VertexArray({206            context : context,207            attributes : attributes208        });209210        expect(va.numberOfAttributes).toEqual(1);211        expect(va.getAttribute(0).enabled).toEqual(true);212213        va.getAttribute(0).enabled = false;214        expect(va.getAttribute(0).enabled).toEqual(false);215216        va._bind();217        va._unBind();218        va = va.destroy();219    });220221    // The following specs test draw calls that pull from a constant attribute.222    // Due to what I believe is a range checking bug in Firefox (Section 6.4 of223    // the WebGL spec), an attribute backed by a buffer must also be bound,224    // otherwise drawArrays unjustly reports an INVALID_OPERATION, hence the225    // firefoxWorkaround attribute below.  In practice, we will always have226    // an attribute backed by a buffer anyway.227228    it('renders with a one-component constant value', function() {229        var vs =230            'attribute float firefoxWorkaround;' +231            'attribute float attr;' +232            'varying vec4 v_color;' +233            'void main() { ' +234            '  v_color = vec4(attr == 0.5) + vec4(firefoxWorkaround);' +235            '  gl_PointSize = 1.0;' +236            '  gl_Position = vec4(0.0, 0.0, 0.0, 1.0);' +237            '}';238        var fs =239            'varying vec4 v_color;' +240            'void main() { gl_FragColor = v_color; }';241        var sp = ShaderProgram.fromCache({242            context : context,243            vertexShaderSource : vs,244            fragmentShaderSource : fs,245            attributeLocations : {246                firefoxWorkaround : 0,247                attr : 1248            }249        });250251        var va = new VertexArray({252            context : context,253            attributes : [{254                vertexBuffer : Buffer.createVertexBuffer({255                    context : context,256                    sizeInBytes : Float32Array.BYTES_PER_ELEMENT,257                    usage : BufferUsage.STATIC_DRAW258                }),259                componentsPerAttribute : 1260            }, {261                value : [0.5]262            }]263        });264265        var command = new DrawCommand({266            primitiveType : PrimitiveType.POINTS,267            shaderProgram : sp,268            vertexArray : va,269            count : 1270        });271        command.execute(context);272273        expect(context).toReadPixels([255, 255, 255, 255]);274275        sp = sp.destroy();276        va = va.destroy();277    });278279    it('renders with a two-component constant value', function() {280        var vs =281            'attribute float firefoxWorkaround;' +282            'attribute vec2 attr;' +283            'varying vec4 v_color;' +284            'void main() { ' +285            '  v_color = vec4(attr == vec2(0.25, 0.75)) + vec4(firefoxWorkaround);' +286            '  gl_PointSize = 1.0;' +287            '  gl_Position = vec4(0.0, 0.0, 0.0, 1.0);' +288            '}';289        var fs =290            'varying vec4 v_color;' +291            'void main() { gl_FragColor = v_color; }';292        var sp = ShaderProgram.fromCache({293            context : context,294            vertexShaderSource : vs,295            fragmentShaderSource : fs,296            attributeLocations : {297                firefoxWorkaround : 0,298                attr : 1299            }300        });301302        var va = new VertexArray({303            context : context,304            attributes : [{305                vertexBuffer : Buffer.createVertexBuffer({306                    context : context,307                    sizeInBytes : Float32Array.BYTES_PER_ELEMENT,308                    usage : BufferUsage.STATIC_DRAW309                }),310                componentsPerAttribute : 1311            }, {312                value : [0.25, 0.75]313            }]314        });315316        var command = new DrawCommand({317            primitiveType : PrimitiveType.POINTS,318            shaderProgram : sp,319            vertexArray : va,320            count : 1321        });322        command.execute(context);323324        expect(context).toReadPixels([255, 255, 255, 255]);325326        sp = sp.destroy();327        va = va.destroy();328    });329330    it('renders with a three-component constant value', function() {331        var vs =332            'attribute float firefoxWorkaround;' +333            'attribute vec3 attr;' +334            'varying vec4 v_color;' +335            'void main() { ' +336            '  v_color = vec4(attr == vec3(0.25, 0.5, 0.75)) + vec4(firefoxWorkaround);' +337            '  gl_PointSize = 1.0;' +338            '  gl_Position = vec4(0.0, 0.0, 0.0, 1.0);' +339            '}';340        var fs =341            'varying vec4 v_color;' +342            'void main() { gl_FragColor = v_color; }';343        var sp = ShaderProgram.fromCache({344            context : context,345            vertexShaderSource : vs,346            fragmentShaderSource : fs,347            attributeLocations : {348                firefoxWorkaround : 0,349                attr : 1350            }351        });352353        var va = new VertexArray({354            context : context,355            attributes : [{356                vertexBuffer : Buffer.createVertexBuffer({357                    context : context,358                    sizeInBytes : Float32Array.BYTES_PER_ELEMENT,359                    usage : BufferUsage.STATIC_DRAW360                }),361                componentsPerAttribute : 1362            }, {363                value : [0.25, 0.5, 0.75]364            }]365        });366367        var command = new DrawCommand({368            primitiveType : PrimitiveType.POINTS,369            shaderProgram : sp,370            vertexArray : va,371            count : 1372        });373        command.execute(context);374375        expect(context).toReadPixels([255, 255, 255, 255]);376377        sp = sp.destroy();378        va = va.destroy();379    });380381    it('renders with a four-component constant value', function() {382        var vs =383            'attribute float firefoxWorkaround;' +384            'attribute vec4 attr;' +385            'varying vec4 v_color;' +386            'void main() { ' +387            '  v_color = vec4(attr == vec4(0.2, 0.4, 0.6, 0.8)) + vec4(firefoxWorkaround);' +388            '  gl_PointSize = 1.0;' +389            '  gl_Position = vec4(0.0, 0.0, 0.0, 1.0);' +390            '}';391        var fs =392            'varying vec4 v_color;' +393            'void main() { gl_FragColor = v_color; }';394        var sp = ShaderProgram.fromCache({395            context : context,396            vertexShaderSource : vs,397            fragmentShaderSource : fs,398            attributeLocations : {399                firefoxWorkaround : 0,400                attr : 1401            }402        });403404        var va = new VertexArray({405            context : context,406            attributes : [{407                vertexBuffer : Buffer.createVertexBuffer({408                    context : context,409                    sizeInBytes : Float32Array.BYTES_PER_ELEMENT,410                    usage : BufferUsage.STATIC_DRAW411                }),412                componentsPerAttribute : 1413            }, {414                value : [0.2, 0.4, 0.6, 0.8]415            }]416        });417418        var command = new DrawCommand({419            primitiveType : PrimitiveType.POINTS,420            shaderProgram : sp,421            vertexArray : va,422            count : 1423        });424        command.execute(context);425426        expect(context).toReadPixels([255, 255, 255, 255]);427428        sp = sp.destroy();429        va = va.destroy();430    });431432    it('renders two vertex arrays with constant values', function() {433        var vs =434            'attribute float firefoxWorkaround;' +435            'attribute vec4 attr;' +436            'varying vec4 v_color;' +437            'void main() { ' +438            '  v_color = attr + vec4(firefoxWorkaround);' +439            '  gl_PointSize = 1.0;' +440            '  gl_Position = vec4(0.0, 0.0, 0.0, 1.0);' +441            '}';442443        var fs =444            'varying vec4 v_color;' +445            'void main() { gl_FragColor = v_color; }';446447        var sp = ShaderProgram.fromCache({448            context : context,449            vertexShaderSource : vs,450            fragmentShaderSource : fs,451            attributeLocations : {452                firefoxWorkaround : 0,453                attr : 1454            }455        });456457        var vertexBuffer = Buffer.createVertexBuffer({458            context : context,459            sizeInBytes : Float32Array.BYTES_PER_ELEMENT,460            usage : BufferUsage.STATIC_DRAW461        });462463        var vaRed = new VertexArray({464            context : context,465            attributes : [{466                vertexBuffer : vertexBuffer,467                componentsPerAttribute : 1468            }, {469                value : [1, 0, 0, 1]470            }]471        });472473        var vaGreen = new VertexArray({474            context : context,475            attributes : [{476                vertexBuffer : vertexBuffer,477                componentsPerAttribute : 1478            }, {479                value : [0, 1, 0, 1]480            }]481        });482483        var commandRed = new DrawCommand({484            primitiveType : PrimitiveType.POINTS,485            shaderProgram : sp,486            vertexArray : vaRed,487            count : 1488        });489490        var commandGreen = new DrawCommand({491            primitiveType : PrimitiveType.POINTS,492            shaderProgram : sp,493            vertexArray : vaGreen,494            count : 1495        });496497        commandRed.execute(context);498        expect(context).toReadPixels([255, 0, 0, 255]);499500        commandGreen.execute(context);501        expect(context).toReadPixels([0, 255, 0, 255]);502503        sp = sp.destroy();504        vaRed = vaRed.destroy();505        vaGreen = vaGreen.destroy();506    });507508    it('destroys', function() {509        var va = new VertexArray({510            context : context,511            attributes : [{512                vertexBuffer : Buffer.createVertexBuffer({513                    context : context,514                    sizeInBytes : new Float32Array([0, 0, 0, 1]),515                    usage : BufferUsage.STATIC_DRAW516                }),517                componentsPerAttribute : 4518            }]519        });520521        expect(va.isDestroyed()).toEqual(false);522        va.destroy();523        expect(va.isDestroyed()).toEqual(true);524    });525526    it('fails to create (missing vertexBuffer and value)', function() {527        var attributes = [{528            componentsPerAttribute : 3529        }];530531        expect(function() {532            return new VertexArray({533                context : context,534                attributes : attributes535            });536        }).toThrowDeveloperError();537    });538539    it('fails to create (provides both vertexBuffer and value)', function() {540        var buffer = Buffer.createVertexBuffer({541            context : context,542            sizeInBytes : 3,543            usage : BufferUsage.STATIC_DRAW544        });545546        var attributes = [{547            vertexBuffer : buffer,548            value : [1, 2, 3],549            componentsPerAttribute : 3550        }];551552        expect(function() {553            return new VertexArray({554                context : context,555                attributes : attributes556            });557        }).toThrowDeveloperError();558    });559560    it('fails to create with duplicate indices', function() {561        var buffer = Buffer.createVertexBuffer({562            context : context,563            sizeInBytes : 1,564            usage : BufferUsage.STATIC_DRAW565        });566567        var attributes = [{568            index : 1,569            vertexBuffer : buffer,570            componentsPerAttribute : 1571        }, {572            index : 1,573            vertexBuffer : buffer,574            componentsPerAttribute : 1575        }];576577        expect(function() {578            return new VertexArray({579                context : context,580                attributes : attributes581            });582        }).toThrowDeveloperError();583    });584585    it('fails to create (componentsPerAttribute missing)', function() {586        var buffer = Buffer.createVertexBuffer({587            context : context,588            sizeInBytes : 3,589            usage : BufferUsage.STATIC_DRAW590        });591592        var attributes = [{593            vertexBuffer : buffer594        }];595596        expect(function() {597            return new VertexArray({598                context : context,599                attributes : attributes600            });601        }).toThrowDeveloperError();602    });603604    it('fails to create (componentsPerAttribute < 1)', function() {605        var attributes = [{606            componentsPerAttribute : 0607        }];608609        expect(function() {610            return new VertexArray({611                context : context,612                attributes : attributes613            });614        }).toThrowDeveloperError();615    });616617    it('fails to create (componentsPerAttribute > 4)', function() {618        var attributes = [{619            componentsPerAttribute : 5620        }];621622        expect(function() {623            return new VertexArray({624                context : context,625                attributes : attributes626            });627        }).toThrowDeveloperError();628    });629630    it('fails to create (value.length < 1)', function() {631        var attributes = [{632            value : []633        }];634635        expect(function() {636            return new VertexArray({637                context : context,638                attributes : attributes639            });640        }).toThrowDeveloperError();641    });642643    it('fails to create (value.length > 4)', function() {644        var attributes = [{645            value : [1.0, 2.0, 3.0, 4.0, 5.0]646        }];647648        expect(function() {649            return new VertexArray({650                context : context,651                attributes : attributes652            });653        }).toThrowDeveloperError();654    });655656    it('fails to create (componentDatatype)', function() {657        var buffer = Buffer.createVertexBuffer({658            context : context,659            sizeInBytes : 3,660            usage : BufferUsage.STATIC_DRAW661        });662663        var attributes = [{664            vertexBuffer : buffer,665            componentsPerAttribute : 3,666            componentDatatype : 'invalid component datatype'667        }];668669        expect(function() {670            return new VertexArray({671                context : context,672                attributes : attributes673            });674        }).toThrowDeveloperError();675    });676677    it('fails to create (strideInBytes)', function() {678        var buffer = Buffer.createVertexBuffer({679            context : context,680            sizeInBytes : 3,681            usage : BufferUsage.STATIC_DRAW682        });683684        var attributes = [{685            vertexBuffer : buffer,686            componentsPerAttribute : 3,687            strideInBytes : 256688        }];689690        expect(function() {691            return new VertexArray({692                context : context,693                attributes : attributes694            });695        }).toThrowDeveloperError();696    });697698    it('fails to get attribute', function() {699        var attributes = [{700            value : [0.0, 0.0, 0.0],701            componentsPerAttribute : 3702        }];703704        var va = new VertexArray({705            context : context,706            attributes : attributes707        });708709        expect(function() {710            return va.getAttribute();711        }).toThrowDeveloperError();712    });713714    it('fails to destroy', function() {715        var attributes = [{716            value : [0.0, 0.0, 0.0],717            componentsPerAttribute : 3718        }];719720        var va = new VertexArray({721            context : context,722            attributes : attributes723        });724725        va.destroy();726727        expect(function() {728            va.destroy();729        }).toThrowDeveloperError();730    });731732    it('throws when there is no context', function() {733        expect(function() {734            return new VertexArray();735        }).toThrowDeveloperError();736    });737738    it('throws if instanceDivisor is less than zero', function() {739        var buffer = Buffer.createVertexBuffer({740            context : context,741            sizeInBytes : 3,742            usage : BufferUsage.STATIC_DRAW743        });744745        var attributes = [{746            vertexBuffer : buffer,747            componentsPerAttribute : 3,748            instanceDivisor : -1749        }];750751        expect(function() {752            return new VertexArray({753                context : context,754                attributes : attributes755            });756        }).toThrowDeveloperError();757    });758759    // Direct3D 9 requires vertex attribute zero to not be instanced. While ANGLE can work around this, it is best760    // to follow this convention. This test also guarantees that not all vertex attributes are instanced.761    it('throws if vertex attribute zero is instanced', function() {762        var buffer = Buffer.createVertexBuffer({763            context : context,764            sizeInBytes : 3,765            usage : BufferUsage.STATIC_DRAW766        });767768        var attributes = [{769            index : 0,770            vertexBuffer : buffer,771            componentsPerAttribute : 3,772            instanceDivisor : 1773        }, {774            index : 1,775            vertexBuffer : buffer,776            componentsPerAttribute : 3777        }];778779        expect(function() {780            return new VertexArray({781                context : context,782                attributes : attributes783            });784        }).toThrowDeveloperError();785    });786787    it('throws if an attribute has an instanceDivisor and is not backed by a buffer', function() {788        var buffer = Buffer.createVertexBuffer({789            context : context,790            sizeInBytes : 3,791            usage : BufferUsage.STATIC_DRAW792        });793794        var attributes = [{795            index : 0,796            vertexBuffer : buffer,797            componentsPerAttribute : 3798        }, {799            index : 1,800            value : [0.0, 0.0, 1.0],801            componentsPerAttribute : 3,802            instanceDivisor : 1803        }];804805        expect(function() {806            return new VertexArray({807                context : context,808                attributes : attributes809            });810        }).toThrowDeveloperError();811    });812813    it('throws when instanceDivisor is greater than zero and the instanced arrays extension is not supported.', function() {814        if (!context.instancedArrays) {815            var buffer = Buffer.createVertexBuffer({816                context : context,817                sizeInBytes : 3,818                usage : BufferUsage.STATIC_DRAW819            });820821            var attributes = [{822                index : 0,823                vertexBuffer : buffer,824                componentsPerAttribute : 3825            }, {826                index : 1,827                vertexBuffer : buffer,828                componentsPerAttribute : 3,829                instanceDivisor : 1830            }];831832            expect(function() {833                return new VertexArray({834                    context : context,835                    attributes : attributes836                });837            }).toThrowDeveloperError();838        }839    });
...

VertexArrayFacadeSpec.js

Source:VertexArrayFacadeSpec.js

1/*global defineSuite*/2defineSuite([3        'Renderer/VertexArrayFacade',4        'Core/ComponentDatatype',5        'Renderer/BufferUsage',6        'Specs/createContext'7    ], function(8        VertexArrayFacade,9        ComponentDatatype,10        BufferUsage,11        createContext) {12    'use strict';1314    var context;1516    beforeAll(function() {17        context = createContext();18    });1920    afterAll(function() {21        context.destroyForSpecs();22    });2324    it('creates a vertex array with static floats', function() {25        var positionIndex = 0;26        var vaf = new VertexArrayFacade(context, [{27            index : positionIndex,28            componentsPerAttribute : 3,29            componentDatatype : ComponentDatatype.FLOAT,30            usage : BufferUsage.STATIC_DRAW31        }], 1);3233        var writer = vaf.writers[positionIndex];34        expect(writer).toBeDefined();3536        writer(0, 1.0, 2.0, 3.0); // Write [1.0, 2.0, 3.0] at index zero.37        vaf.commit(); // Commit writes3839        expect(vaf.va[0].va.getAttribute(0).vertexBuffer).toBeDefined();40        expect(vaf.va[0].va.getAttribute(0).vertexBuffer.sizeInBytes).toEqual(1 * 3 * 4);41        expect(vaf.va[0].va.getAttribute(0).vertexBuffer.usage).toEqual(BufferUsage.STATIC_DRAW);42        expect(vaf.va[0].va.getAttribute(0).componentsPerAttribute).toEqual(3);43        expect(vaf.va[0].va.getAttribute(0).componentDatatype).toEqual(ComponentDatatype.FLOAT);44        expect(vaf.va[0].va.getAttribute(0).offsetInBytes).toEqual(0);45        expect(vaf.va[0].va.getAttribute(0).strideInBytes).toEqual(3 * 4);46    });4748    it('resizes a vertex array with static floats', function() {49        var positionIndex = 0;50        var vaf = new VertexArrayFacade(context, [{51            index : positionIndex,52            componentsPerAttribute : 3,53            componentDatatype : ComponentDatatype.FLOAT,54            usage : BufferUsage.STATIC_DRAW55        }], 1);5657        var writer = vaf.writers[positionIndex];58        expect(writer).toBeDefined();5960        writer(0, 1.0, 2.0, 3.0); // Write [1.0, 2.0, 3.0] at index zero.6162        vaf.resize(2); // Two vertices63        writer(1, 1.0, 2.0, 3.0); // Write [4.0, 5.0, 6.0] at index one.64        vaf.commit(); // Commit writes6566        expect(vaf.va[0].va.getAttribute(0).vertexBuffer).toBeDefined();67        expect(vaf.va[0].va.getAttribute(0).vertexBuffer.sizeInBytes).toEqual(2 * 3 * 4);68        expect(vaf.va[0].va.getAttribute(0).vertexBuffer.usage).toEqual(BufferUsage.STATIC_DRAW);69        expect(vaf.va[0].va.getAttribute(0).componentsPerAttribute).toEqual(3);70        expect(vaf.va[0].va.getAttribute(0).componentDatatype).toEqual(ComponentDatatype.FLOAT);71        expect(vaf.va[0].va.getAttribute(0).offsetInBytes).toEqual(0);72        expect(vaf.va[0].va.getAttribute(0).strideInBytes).toEqual(3 * 4);73    });7475    it('creates a vertex array with static floats and unsigned bytes', function() {76        var positionIndex = 0;77        var colorIndex = 2;78        var vaf = new VertexArrayFacade(context, [{79            index : positionIndex,80            componentsPerAttribute : 3,81            componentDatatype : ComponentDatatype.FLOAT,82            usage : BufferUsage.STATIC_DRAW83        }, {84            index : colorIndex,85            componentsPerAttribute : 4,86            componentDatatype : ComponentDatatype.UNSIGNED_BYTE,87            usage : BufferUsage.STATIC_DRAW88        }], 1);8990        var positionWriter = vaf.writers[positionIndex];91        var colorWriter = vaf.writers[colorIndex];9293        expect(positionWriter).toBeDefined();94        expect(colorWriter).toBeDefined();9596        positionWriter(0, 1.0, 2.0, 3.0); // Write position [1.0, 2.0, 3.0] at index zero.97        colorWriter(0, 0, 255, 0, 255); // Write color [0, 255, 0, 255] at index zero.98        vaf.commit(); // Commit writes99100        // Position attribute101        expect(vaf.va[0].va.getAttribute(0).vertexBuffer).toBeDefined();102        expect(vaf.va[0].va.getAttribute(0).vertexBuffer.sizeInBytes).toEqual(1 * ((3 * 4) + (4 * 1)));103        expect(vaf.va[0].va.getAttribute(0).vertexBuffer.usage).toEqual(BufferUsage.STATIC_DRAW);104        expect(vaf.va[0].va.getAttribute(0).componentsPerAttribute).toEqual(3);105        expect(vaf.va[0].va.getAttribute(0).componentDatatype).toEqual(ComponentDatatype.FLOAT);106        expect(vaf.va[0].va.getAttribute(0).offsetInBytes).toEqual(0);107        expect(vaf.va[0].va.getAttribute(0).strideInBytes).toEqual((3 * 4) + (4 * 1));108109        // Color attribute110        expect(vaf.va[0].va.getAttribute(1).vertexBuffer).toEqual(vaf.va[0].va.getAttribute(0).vertexBuffer);111        expect(vaf.va[0].va.getAttribute(1).componentsPerAttribute).toEqual(4);112        expect(vaf.va[0].va.getAttribute(1).componentDatatype).toEqual(ComponentDatatype.UNSIGNED_BYTE);113        expect(vaf.va[0].va.getAttribute(1).offsetInBytes).toEqual(3 * 4);114        expect(vaf.va[0].va.getAttribute(1).strideInBytes).toEqual(vaf.va[0].va.getAttribute(0).strideInBytes);115    });116117    it('creates a vertex array with static and dynamic attributes', function() {118        var positionIndex = 0;119        var txCoordIndex = 2;120        var vaf = new VertexArrayFacade(context, [{121            index : positionIndex,122            componentsPerAttribute : 3,123            componentDatatype : ComponentDatatype.FLOAT,124            usage : BufferUsage.STATIC_DRAW125        }, {126            index : txCoordIndex,127            componentsPerAttribute : 2,128            componentDatatype : ComponentDatatype.UNSIGNED_SHORT,129            usage : BufferUsage.DYNAMIC_DRAW,130            normalize : true131        }], 1);132133        var positionWriter = vaf.writers[positionIndex];134        var txCoordWriter = vaf.writers[txCoordIndex];135136        expect(positionWriter).toBeDefined();137        expect(txCoordWriter).toBeDefined();138139        positionWriter(0, 1.0, 2.0, 3.0);140        txCoordWriter(0, 32 * 1024, 64 * 1024);141        vaf.commit();142143        // Position attribute144        expect(vaf.va[0].va.getAttribute(0).vertexBuffer).toBeDefined();145        expect(vaf.va[0].va.getAttribute(0).vertexBuffer.sizeInBytes).toEqual(1 * (3 * 4));146        expect(vaf.va[0].va.getAttribute(0).vertexBuffer.usage).toEqual(BufferUsage.STATIC_DRAW);147        expect(vaf.va[0].va.getAttribute(0).componentsPerAttribute).toEqual(3);148        expect(vaf.va[0].va.getAttribute(0).componentDatatype).toEqual(ComponentDatatype.FLOAT);149        expect(vaf.va[0].va.getAttribute(0).offsetInBytes).toEqual(0);150        expect(vaf.va[0].va.getAttribute(0).strideInBytes).toEqual(3 * 4);151152        // Texture coordinate attribute153        expect(vaf.va[0].va.getAttribute(1).vertexBuffer).toBeDefined();154        expect(vaf.va[0].va.getAttribute(1).vertexBuffer.sizeInBytes).toEqual(1 * (2 * 2));155        expect(vaf.va[0].va.getAttribute(1).vertexBuffer.usage).toEqual(BufferUsage.DYNAMIC_DRAW);156        expect(vaf.va[0].va.getAttribute(1).componentsPerAttribute).toEqual(2);157        expect(vaf.va[0].va.getAttribute(1).componentDatatype).toEqual(ComponentDatatype.UNSIGNED_SHORT);158        expect(vaf.va[0].va.getAttribute(1).offsetInBytes).toEqual(0);159        expect(vaf.va[0].va.getAttribute(1).strideInBytes).toEqual(2 * 2);160    });161162    it('sub-commits', function() {163        var positionIndex = 0;164        var temperatureIndex = 2;165        var vaf = new VertexArrayFacade(context, [{166            index : positionIndex,167            componentsPerAttribute : 3,168            componentDatatype : ComponentDatatype.FLOAT,169            usage : BufferUsage.STATIC_DRAW170        }, {171            index : temperatureIndex,172            componentsPerAttribute : 1,173            componentDatatype : ComponentDatatype.FLOAT,174            usage : BufferUsage.STREAM_DRAW175        }], 2);176177        var positionWriter = vaf.writers[positionIndex];178        var temperatureWriter = vaf.writers[temperatureIndex];179180        expect(positionWriter).toBeDefined();181        expect(temperatureWriter).toBeDefined();182183        positionWriter(0, 1.0, 2.0, 3.0);184        temperatureWriter(0, 98.6);185        positionWriter(1, 7.0, 8.0, 9.0);186        temperatureWriter(1, 32.0);187        vaf.commit();188189        // Rewrite all vertices190        positionWriter(0, 10.0, 20.0, 30.0);191        temperatureWriter(0, 37.0);192        positionWriter(1, 70.0, 80.0, 90.0);193        temperatureWriter(1, 0.0);194        vaf.commit();195196        // Sub-commit to just one vertex197        temperatureWriter(1, 212.0);198        vaf.subCommit(1, 1);199        vaf.endSubCommits();200201        // Position attribute202        expect(vaf.va[0].va.getAttribute(1).vertexBuffer).toBeDefined();203        expect(vaf.va[0].va.getAttribute(1).vertexBuffer.sizeInBytes).toEqual(2 * (3 * 4));204        expect(vaf.va[0].va.getAttribute(1).vertexBuffer.usage).toEqual(BufferUsage.STATIC_DRAW);205        expect(vaf.va[0].va.getAttribute(1).componentsPerAttribute).toEqual(3);206        expect(vaf.va[0].va.getAttribute(1).componentDatatype).toEqual(ComponentDatatype.FLOAT);207        expect(vaf.va[0].va.getAttribute(1).offsetInBytes).toEqual(0);208        expect(vaf.va[0].va.getAttribute(1).strideInBytes).toEqual(3 * 4);209210        // Temperature attribute211        expect(vaf.va[0].va.getAttribute(0).vertexBuffer).toBeDefined();212        expect(vaf.va[0].va.getAttribute(0).vertexBuffer.sizeInBytes).toEqual(2 * 4);213        expect(vaf.va[0].va.getAttribute(0).vertexBuffer.usage).toEqual(BufferUsage.STREAM_DRAW);214        expect(vaf.va[0].va.getAttribute(0).componentsPerAttribute).toEqual(1);215        expect(vaf.va[0].va.getAttribute(0).componentDatatype).toEqual(ComponentDatatype.FLOAT);216        expect(vaf.va[0].va.getAttribute(0).offsetInBytes).toEqual(0);217        expect(vaf.va[0].va.getAttribute(0).strideInBytes).toEqual(1 * 4);218    });219220    it('destroys previous vertex buffers when number of vertices grows', function() {221        var positionIndex = 0;222        var vaf = new VertexArrayFacade(context, [{223            index : positionIndex,224            componentsPerAttribute : 3,225            componentDatatype : ComponentDatatype.FLOAT,226            usage : BufferUsage.STATIC_DRAW227        }], 1);228229        var writer = vaf.writers[positionIndex];230        expect(writer).toBeDefined();231232        writer(0, 1.0, 2.0, 3.0); // Write [1.0, 2.0, 3.0] at index zero.233        vaf.commit(); // Commit writes234235        // Grab the vertex buffer236        var vbBeforeResize = vaf.va[0].va.getAttribute(0).vertexBuffer;237238        vaf.resize(2); // Two vertices239        writer(1, 1.0, 2.0, 3.0); // Write [4.0, 5.0, 6.0] at index one.240        vaf.commit(); // Commit writes241242        expect(vbBeforeResize.isDestroyed()).toBe(true);243        expect(vaf.va[0].va.getAttribute(0).vertexBuffer).not.toBe(vbBeforeResize);244    });245246    it('is not initially destroyed', function () {247        var positionIndex = 0;248        var vaf = new VertexArrayFacade(context, [{249            index : positionIndex,250            componentsPerAttribute : 3,251            componentDatatype : ComponentDatatype.FLOAT,252            usage : BufferUsage.STATIC_DRAW253        }], 1);254        expect(vaf.isDestroyed()).toBe(false);255    });256257    it('throws when constructed without a context', function() {258        expect(function() {259            return new VertexArrayFacade(undefined, undefined, undefined);260        }).toThrowDeveloperError();261    });262263    it('throws when constructed undefined attributes', function() {264        expect(function() {265            return new VertexArrayFacade(context, undefined, undefined);266        }).toThrowDeveloperError();267    });268269    it('throws when constructed without attributes', function() {270        expect(function() {271            return new VertexArrayFacade(context, []);272        }).toThrowDeveloperError();273    });274275    it('throws when constructed with attributes without componentsPerAttribute', function() {276        expect(function() {277            return new VertexArrayFacade(context, [{}]);278        }).toThrowDeveloperError();279    });280281    it('throws when constructed with attributes with an invalid componentDatatype', function() {282        expect(function() {283            return new VertexArrayFacade(context, [{284                componentsPerAttribute : 1,285                componentDatatype : 'invalid component datatype'286            }]);287        }).toThrowDeveloperError();288    });289290    it('throws when constructed with attributes with an invalid usage', function() {291        expect(function() {292            return new VertexArrayFacade(context, [{293                componentsPerAttribute : 1,294                usage : 'invalid component usage'295            }]);296        }).toThrowDeveloperError();297    });298299    it('throws when constructed with attributes with duplicate indices', function() {300        expect(function() {301            return new VertexArrayFacade(context, [{302                index : 0,303                componentsPerAttribute : 1304            }, {305                index : 0,306                componentsPerAttribute : 1307            }]);308        }).toThrowDeveloperError();309    });310311    it('subCommit throws when passed an invalid offsetInVertices', function() {312        var positionIndex = 0;313        var vaf = new VertexArrayFacade(context, [{314            index : positionIndex,315            componentsPerAttribute : 3,316            componentDatatype : ComponentDatatype.FLOAT,317            usage : BufferUsage.STATIC_DRAW318        }], 10);319320        expect(function() {321            vaf.subCommit(-1, 1);322        }).toThrowDeveloperError();323324        expect(function() {325            vaf.subCommit(10, 1);326        }).toThrowDeveloperError();327328        expect(function() {329            vaf.subCommit(1, 10);330        }).toThrowDeveloperError();331    });
...

Using AI Code Generation

1const { vA } = require('fast-check-monorepo');2console.log(vA());3const { vB } = require('fast-check-monorepo');4console.log(vB());5const { vC } = require('fast-check-monorepo');6console.log(vC());7const { vD } = require('fast-check-monorepo');8console.log(vD());9const { vE } = require('fast-check-monorepo');10console.log(vE());11const { vF } = require('fast-check-monorepo');12console.log(vF());13const { vG } = require('fast-check-monorepo');14console.log(vG());15const { vH } = require('fast-check-monorepo');16console.log(vH());17const { vI } = require('fast-check-monorepo');18console.log(vI());19const { vJ } = require('fast-check-monorepo');20console.log(vJ());21const { vK } = require('fast-check-monorepo');22console.log(vK());23const { vL } = require('fast-check-monorepo');24console.log(vL());25const { vM } = require('fast-check-monorepo');26console.log(vM());27const { vN } = require('fast-check-monorepo');28console.log(vN());29const { vO } = require('fast-check-monorepo');30console.log(vO());31const { v

Using AI Code Generation

1const fc = require('fast-check');2const { vA } = require('fast-check-monorepo');3console.log(vA);4const { vB } = require('fast-check-monorepo');5console.log(vB);6const { vC } = require('fast-check-monorepo');7console.log(vC);8const { vD } = require('fast-check-monorepo');9console.log(vD);10const { vE } = require('fast-check-monorepo');11console.log(vE);12const { vF } = require('fast-check-monorepo');13console.log(vF);14const { vG } = require('fast-check-monorepo');15console.log(vG);16const { vH } = require('fast-check-monorepo');17console.log(vH);18const { vI } = require('fast-check-monorepo');19console.log(vI);20const { vJ } = require('fast-check-monorepo');21console.log(vJ);22const { vK } = require('fast-check-monorepo');23console.log(vK);24const { vL } = require('fast-check-monorepo');25console.log(vL);26const { vM } = require('fast-check-monorepo');27console.log(vM);28const { vN } = require('fast-check-monorepo');29console.log(vN);30const { vO } = require('fast-check-monorepo');31console.log(vO);

Using AI Code Generation

1const fc = require('@dubzzz/fast-check');2fc.assert(3  fc.property(fc.integer(), fc.integer(), (a, b) => {4    return a + b >= a;5  })6);7const fc = require('@dubzzz/fast-check');8fc.assert(9  fc.property(fc.integer(), fc.integer(), (a, b) => {10    return a + b >= a;11  })12);13const fc = require('@dubzzz/fast-check');14fc.assert(15  fc.property(fc.integer(), fc.integer(), (a, b) => {16    return a + b >= a;17  })18);19const fc = require('@dubzzz/fast-check');20fc.assert(21  fc.property(fc.integer(), fc.integer(), (a, b) => {22    return a + b >= a;23  })24);25const fc = require('@dubzzz/fast-check');26fc.assert(27  fc.property(fc.integer(), fc.integer(), (a, b) => {28    return a + b >= a;29  })30);31const fc = require('@dubzzz/fast-check');32fc.assert(33  fc.property(fc.integer(), fc.integer(), (a, b) => {34    return a + b >= a;35  })36);37const fc = require('@dubzzz/fast-check');38fc.assert(39  fc.property(fc.integer(), fc.integer(), (a, b) => {40    return a + b >= a;41  })42);43const fc = require('@dubzzz/fast-check');44fc.assert(45  fc.property(fc.integer(), fc.integer(), (a, b) => {46    return a + b >= a;47  })48);

Using AI Code Generation

1const {check} = require('fast-check');2const vA = require('fast-check-monorepo/vA');3check(vA, {seed: 1, numRuns: 10000}).then((r) => {4  console.log(r);5});6const {check} = require('fast-check');7const vB = require('fast-check-monorepo/vB');8check(vB, {seed: 1, numRuns: 10000}).then((r) => {9  console.log(r);10});11const {check} = require('fast-check');12const vC = require('fast-check-monorepo/vC');13check(vC, {seed: 1, numRuns: 10000}).then((r) => {14  console.log(r);15});16{ numRuns: 10000,17  counterexample: undefined }18{ numRuns: 10000,19  counterexample: undefined }20{ numRuns: 10000,21  counterexample: undefined }22{ numRuns: 10000,23  counterexample: undefined }24{ numRuns: 10000,25  counterexample: undefined }26{ numRuns: 10000,

Using AI Code Generation

1import * as fc from "fast-check";2test("test", () => {3  fc.assert(4    fc.property(fc.integer(), (n) => {5      return n >= 0;6    })7  );8});9test("test", () => {10  fc.assert(11    fc.property(fc.integer(), (n) => {12      return n >= 1;13    })14  );15});16test("test", () => {17  fc.assert(18    fc.property(fc.integer(), (n) => {19      return n >= 2;20    })21  );22});

Using AI Code Generation

1{2  "compilerOptions": {3    "paths": {4    }5  }6}7{8  "compilerOptions": {9    "paths": {10    }11  },12    { "path": "node_modules/fast-check-vA" }13}14{15  "compilerOptions": {16    "paths": {17    }18  },19    { "path": "node_modules/fast-check-vA" }20}21{22  "compilerOptions": {23    "paths": {24    }25  },26    { "path": "node_modules/fast-check-vA" }27}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.