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| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>WebGL buffer overflow test for bindBufferRange</title> |
| <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| <script src="../../js/js-test-pre.js"></script> |
| <script src="../../js/webgl-test-utils.js"></script> |
| </head> |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script> |
| "use strict"; |
| description("WebGL buffer overflow test: buffer overflow will not lead to failure in bindBufferRange"); |
| |
| var wtu = WebGLTestUtils; |
| |
| var gl = wtu.create3DContext(undefined, undefined, 2); |
| |
| debug(""); |
| var buffer1 = gl.createBuffer(); |
| gl.bindBufferRange(gl.TRANSFORM_FEEDBACK_BUFFER, 0, buffer1, 0, 4); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, |
| "Calling bindBufferRange on a buffer where no storage is allocated should succeed."); |
| shouldBe("buffer1", "gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_BINDING, 0)"); |
| shouldBe("4", "gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_SIZE, 0)"); |
| shouldBe("0", "gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_START, 0)"); |
| |
| var buffer2 = gl.createBuffer(); |
| gl.bindBuffer(gl.UNIFORM_BUFFER, buffer2); |
| gl.bufferData(gl.UNIFORM_BUFFER, 4, gl.STATIC_DRAW); |
| gl.bindBufferRange(gl.UNIFORM_BUFFER, 1, buffer2, 0, 8); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, |
| "Calling bindBufferRange on a buffer where the storage is not big enough should succeed."); |
| shouldBe("buffer2", "gl.getIndexedParameter(gl.UNIFORM_BUFFER_BINDING, 1)"); |
| shouldBe("8", "gl.getIndexedParameter(gl.UNIFORM_BUFFER_SIZE, 1)"); |
| shouldBe("0", "gl.getIndexedParameter(gl.UNIFORM_BUFFER_START, 1)"); |
| |
| debug(""); |
| var successfullyParsed = true; |
| </script> |
| <script src="../../js/js-test-post.js"></script> |
| </body> |
| </html> |
