| <!DOCTYPE html> |
| <html> |
| <head> |
| <script src="../../../resources/js-test-pre.js"></script> |
| </head> |
| <body> |
| <canvas id="canvas" width="40" height="40"></canvas> |
| <script> |
| description("Make sure that getBufferSubData() doesn't work on WebGL 1 contexts"); |
| |
| if (window.internals) |
| internals.settings.setWebGL2Enabled(true); |
| |
| var arrayBuffer = new ArrayBuffer(40); |
| var fullArrayView = new Float32Array(arrayBuffer); // [15, 16, 17, 18, 19, 20, 21, 22, 23, 24], 40 bytes |
| var receiver = new Float32Array(20); // 20 floats, 80 bytes |
| for (var i = 0; i < 10; ++i) |
| fullArrayView[i] = 15 + i; |
| |
| var canvas = document.getElementById("canvas"); |
| var context = canvas.getContext("webgl2"); |
| trySuccessUploadDownload(); |
| |
| canvas = document.createElement("canvas"); |
| canvas.width = 40; |
| canvas.height = 40; |
| context = canvas.getContext("webgl"); |
| tryFailUploadDownload(); |
| |
| if (window.internals) |
| internals.settings.setWebGL2Enabled(false); |
| |
| canvas = document.createElement("canvas"); |
| canvas.width = 40; |
| canvas.height = 40; |
| context = canvas.getContext("webgl2"); |
| shouldBeNull("context"); |
| |
| function trySuccessUploadDownload() { |
| var buffer = context.createBuffer(); |
| shouldBe("context.getError()", "context.NO_ERROR"); |
| context.bindBuffer(context.ARRAY_BUFFER, buffer); |
| shouldBe("context.getError()", "context.NO_ERROR"); |
| context.bufferData(context.ARRAY_BUFFER, arrayBuffer, context.STATIC_DRAW); |
| shouldBe("context.getError()", "context.NO_ERROR"); |
| context.getBufferSubData(context.ARRAY_BUFFER, 0, receiver, 0, 10); |
| shouldBe("context.getError()", "context.NO_ERROR"); |
| for (var i = 0; i < 10; ++i) |
| shouldBe("receiver[" + i + "]", "fullArrayView[" + i + "]"); |
| context.deleteBuffer(buffer); |
| shouldBe("context.getError()", "context.NO_ERROR"); |
| } |
| |
| function tryFailUploadDownload() { |
| var buffer = context.createBuffer(); |
| shouldBe("context.getError()", "context.NO_ERROR"); |
| context.bindBuffer(context.ARRAY_BUFFER, buffer); |
| shouldBe("context.getError()", "context.NO_ERROR"); |
| context.bufferData(context.ARRAY_BUFFER, arrayBuffer, context.STATIC_DRAW); |
| shouldBe("context.getError()", "context.NO_ERROR"); |
| shouldThrow("context.getBufferSubData(context.ARRAY_BUFFER, 0, receiver, 0, 10)"); |
| context.deleteBuffer(buffer); |
| shouldBe("context.getError()", "context.NO_ERROR"); |
| } |
| </script> |
| <script src="../../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
