| <html> |
| <head> |
| <script src="../../../resources/js-test.js"></script> |
| <script src="resources/webgl-test.js"></script> |
| </head> |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| |
| <script> |
| description('Tests that index validation for drawElements does not examine too many indices'); |
| |
| if (window.internals) |
| window.internals.settings.setWebGLErrorsToConsoleEnabled(false); |
| |
| var context = create3DContext(); |
| var program = loadStandardProgram(context); |
| |
| context.useProgram(program); |
| var vertexObject = context.createBuffer(); |
| context.enableVertexAttribArray(0); |
| context.bindBuffer(context.ARRAY_BUFFER, vertexObject); |
| // 4 vertices -> 2 triangles |
| context.bufferData(context.ARRAY_BUFFER, new Float32Array([ 0,0,0, 0,1,0, 1,0,0, 1,1,0 ]), context.STATIC_DRAW); |
| context.vertexAttribPointer(0, 3, context.FLOAT, false, 0, 0); |
| |
| var indexObject = context.createBuffer(); |
| |
| debug("Test out of range indices") |
| context.bindBuffer(context.ELEMENT_ARRAY_BUFFER, indexObject); |
| context.bufferData(context.ELEMENT_ARRAY_BUFFER, new Uint16Array([ 10000, 0, 1, 2, 3, 10000 ]), context.STATIC_DRAW); |
| shouldGenerateGLError(context, context.NO_ERROR, "context.drawElements(context.TRIANGLE_STRIP, 4, context.UNSIGNED_SHORT, 2)"); |
| shouldGenerateGLError(context, context.INVALID_OPERATION, "context.drawElements(context.TRIANGLE_STRIP, 4, context.UNSIGNED_SHORT, 0)"); |
| shouldGenerateGLError(context, context.INVALID_OPERATION, "context.drawElements(context.TRIANGLE_STRIP, 4, context.UNSIGNED_SHORT, 4)"); |
| |
| debug("") |
| </script> |
| </body> |
| </html> |
