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| /* |
| ** Copyright (c) 2012 The Khronos Group Inc. |
| ** |
| ** Permission is hereby granted, free of charge, to any person obtaining a |
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| --> |
| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| <script src="../../resources/js-test-pre.js"></script> |
| <script src="../resources/webgl-test.js"></script> |
| <script src="../resources/webgl-test-utils.js"></script> |
| </head> |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| |
| <script> |
| "use strict"; |
| description('Tests that index validation for drawElements works with large attribute buffers'); |
| |
| var wtu = WebGLTestUtils; |
| var context = wtu.create3DContext(); |
| var program = wtu.loadStandardProgram(context); |
| |
| context.useProgram(program); |
| |
| // Create a small index buffer. |
| var indexObject = context.createBuffer(); |
| context.bindBuffer(context.ELEMENT_ARRAY_BUFFER, indexObject); |
| var indexArray = new Uint16Array([0, 1, 2]); |
| context.bufferData(context.ELEMENT_ARRAY_BUFFER, indexArray, context.STATIC_DRAW); |
| |
| // Create a large attribute buffer. |
| var vertexObject = context.createBuffer(); |
| context.enableVertexAttribArray(0); |
| context.bindBuffer(context.ARRAY_BUFFER, vertexObject); |
| context.bufferData(context.ARRAY_BUFFER, new Float32Array(3 * 65536), context.STATIC_DRAW); |
| context.vertexAttribPointer(0, 3, context.FLOAT, false, 0, 0); |
| |
| debug("Test large attribute buffer") |
| shouldGenerateGLError(context, context.NO_ERROR, "context.drawElements(context.TRIANGLES, 3, context.UNSIGNED_SHORT, 0)"); |
| |
| // Enlarge the attribute buffer slightly. |
| debug("Test even larger attribute buffer") |
| context.bufferData(context.ARRAY_BUFFER, new Float32Array(3 * 65536 + 3), context.STATIC_DRAW); |
| shouldGenerateGLError(context, context.NO_ERROR, "context.drawElements(context.TRIANGLES, 3, context.UNSIGNED_SHORT, 0)"); |
| |
| debug("") |
| var successfullyParsed = true; |
| </script> |
| |
| <script src="../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
