| <!-- |
| Copyright (c) 2019 The Khronos Group Inc. |
| Use of this source code is governed by an MIT-style license that can be |
| found in the LICENSE.txt file. |
| --> |
| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>WebGL drawElements Test</title> |
| <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| <script src="../../js/desktop-gl-constants.js"></script> |
| <script src="../../js/js-test-pre.js"></script> |
| <script src="../../js/webgl-test-utils.js"> </script> |
| </head> |
| <body> |
| <canvas id="example" width="50" height="50"></canvas> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script id="vshader" type="x-shader/x-vertex"> |
| attribute vec4 vPosition; |
| void main() |
| { |
| gl_Position = vPosition; |
| } |
| </script> |
| |
| <script id="fshader" type="x-shader/x-fragment"> |
| void main() |
| { |
| gl_FragColor = vec4(1.0,0.0,0.0,1.0); |
| } |
| </script> |
| |
| <script>"use strict"; |
| description(document.title); |
| |
| var wtu = WebGLTestUtils; |
| var gl = wtu.create3DContext("example"); |
| var program = wtu.setupProgram(gl, ["vshader", "fshader"], ["vPosition"]); |
| |
| gl.bindBuffer(gl.ARRAY_BUFFER, gl.createBuffer()); |
| gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ 0,0.5,0, -0.5,-0.5,0, 0.5,-0.5,0 ]), gl.STATIC_DRAW); |
| gl.enableVertexAttribArray(0); |
| gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0); |
| |
| gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, gl.createBuffer()); |
| gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Uint16Array([ 0, 1, 2]), gl.STATIC_DRAW); |
| wtu.shouldGenerateGLError(gl, gl.NO_ERROR, |
| "gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 0)"); |
| |
| gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Uint8Array([ 0, 1, 2, 0]), gl.STATIC_DRAW); |
| wtu.shouldGenerateGLError(gl, gl.NO_ERROR, |
| "gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_BYTE, 0)"); |
| |
| wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, |
| "gl.drawElements(desktopGL.QUAD_STRIP, 4, gl.UNSIGNED_BYTE, 0)"); |
| wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, |
| "gl.drawElements(desktopGL.QUADS, 4, gl.UNSIGNED_BYTE, 0)"); |
| wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, |
| "gl.drawElements(desktopGL.POLYGON, 4, gl.UNSIGNED_BYTE, 0)"); |
| |
| gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Uint32Array([ 0, 1, 2]), gl.STATIC_DRAW); |
| |
| wtu.shouldGenerateGLError(gl, |
| wtu.getDefault3DContextVersion() > 1 ? gl.NO_ERROR : gl.INVALID_ENUM, |
| "gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_INT, 0)"); |
| |
| wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, |
| "gl.drawElements(gl.TRIANGLES, 3, gl.FLOAT, 0)"); |
| wtu.shouldGenerateGLError(gl, gl.INVALID_ENUM, |
| "gl.drawElements(gl.TRIANGLES, 3, gl.SHORT, 0)"); |
| |
| // Index validation |
| gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Uint16Array([0,1,2,2000, 40802, 5887992]), gl.STATIC_DRAW); |
| wtu.shouldGenerateGLError(gl, gl.INVALID_OPERATION, |
| "gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 1)"); |
| wtu.shouldGenerateGLError(gl, gl.NO_ERROR, |
| "gl.drawElements(gl.TRIANGLES, 2, gl.UNSIGNED_SHORT, 2)"); |
| var indexValidationError = wtu.shouldGenerateGLError(gl, [gl.INVALID_OPERATION, gl.NO_ERROR], |
| "gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 2)"); |
| wtu.shouldGenerateGLError(gl, gl.INVALID_OPERATION, |
| "gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 3)"); |
| wtu.shouldGenerateGLError(gl, indexValidationError, |
| "gl.drawElements(gl.TRIANGLES, 6, gl.UNSIGNED_SHORT, 0)"); |
| wtu.shouldGenerateGLError(gl, gl.INVALID_OPERATION, |
| "gl.drawElements(gl.TRIANGLES, 7, gl.UNSIGNED_SHORT, 0)"); |
| wtu.shouldGenerateGLError(gl, gl.INVALID_OPERATION, |
| "gl.drawElements(gl.TRIANGLES, 6, gl.UNSIGNED_SHORT, 2)"); |
| |
| var successfullyParsed = true; |
| </script> |
| <script src="../../js/js-test-post.js"></script> |
| |
| </body> |
| </html> |