1 files changed, 119 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/buffers/bound-buffer-size-change-test.html b/dom/canvas/test/webgl-conf/checkout/conformance2/buffers/bound-buffer-size-change-test.html
new file mode 100644
index 0000000000..a61d154eb1
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/buffers/bound-buffer-size-change-test.html
@@ -0,0 +1,119 @@
+<!--
+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 buffer size change test for bindBufferBase/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 size change for bindings through bindBufferBase/bindBufferRange");
+
+// This test verifies the ES3 behavior, that the bound buffer range (offset, size) is not
+// limited by the actual buffer size, and the driver is responsible that no out-of-range
+// access may happen.
+
+var wtu = WebGLTestUtils;
+
+var gl = wtu.create3DContext(undefined, undefined, 2);
+
+debug("");
+debug("bindBufferBase with TRANSFORM_FEEDBACK_BUFFER target");
+var buffer1 = gl.createBuffer();
+gl.bindBufferBase(gl.TRANSFORM_FEEDBACK_BUFFER, 0, buffer1);
+wtu.glErrorShouldBe(gl, gl.NO_ERROR,
+    "Calling bindBufferBase on a buffer where no storage is allocated should succeed.");
+shouldBe("gl.getParameter(gl.TRANSFORM_FEEDBACK_BUFFER_BINDING)", "buffer1");
+shouldBe("gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_BINDING, 0)", "buffer1");
+shouldBe("gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_SIZE, 0)", "0");
+shouldBe("gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_START, 0)", "0");
+
+gl.bufferData(gl.TRANSFORM_FEEDBACK_BUFFER, 4, gl.STATIC_DRAW);
+shouldBe("gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_BINDING, 0)", "buffer1");
+shouldBe("gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_SIZE, 0)", "0");
+shouldBe("gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_START, 0)", "0");
+
+wtu.glErrorShouldBe(gl, gl.NO_ERROR);
+
+debug("");
+debug("bindBufferBase with UNIFORM_BUFFER target");
+var buffer2 = gl.createBuffer();
+gl.bindBufferBase(gl.UNIFORM_BUFFER, 1, buffer2);
+wtu.glErrorShouldBe(gl, gl.NO_ERROR,
+    "Calling bindBufferBase on a buffer where no storage is allocated should succeed.");
+shouldBe("gl.getParameter(gl.UNIFORM_BUFFER_BINDING)", "buffer2");
+shouldBe("gl.getIndexedParameter(gl.UNIFORM_BUFFER_BINDING, 1)", "buffer2");
+shouldBe("gl.getIndexedParameter(gl.UNIFORM_BUFFER_SIZE, 1)", "0");
+shouldBe("gl.getIndexedParameter(gl.UNIFORM_BUFFER_START, 1)", "0");
+
+gl.bufferData(gl.UNIFORM_BUFFER, 8, gl.STATIC_DRAW);
+shouldBe("gl.getIndexedParameter(gl.UNIFORM_BUFFER_BINDING, 1)", "buffer2");
+shouldBe("gl.getIndexedParameter(gl.UNIFORM_BUFFER_SIZE, 1)", "0");
+shouldBe("gl.getIndexedParameter(gl.UNIFORM_BUFFER_START, 1)", "0");
+
+wtu.glErrorShouldBe(gl, gl.NO_ERROR);
+
+debug("");
+debug("bindBufferRange with TRANSFORM_FEEDBACK_BUFFER target");
+var buffer3 = gl.createBuffer();
+gl.bindBufferRange(gl.TRANSFORM_FEEDBACK_BUFFER, 0, buffer3, 4, 8);
+wtu.glErrorShouldBe(gl, gl.NO_ERROR,
+    "Calling bindBufferRange on a buffer where no storage is allocated should succeed.");
+shouldBe("gl.getParameter(gl.TRANSFORM_FEEDBACK_BUFFER_BINDING)", "buffer3");
+shouldBe("gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_BINDING, 0)", "buffer3");
+shouldBe("gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_SIZE, 0)", "8");
+shouldBe("gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_START, 0)", "4");
+
+gl.bufferData(gl.TRANSFORM_FEEDBACK_BUFFER, 4, gl.STATIC_DRAW);
+shouldBe("gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_BINDING, 0)", "buffer3");
+shouldBe("gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_SIZE, 0)", "8");
+shouldBe("gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_START, 0)", "4");
+
+gl.bufferData(gl.TRANSFORM_FEEDBACK_BUFFER, 12, gl.STATIC_DRAW);
+shouldBe("gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_BINDING, 0)", "buffer3");
+shouldBe("gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_SIZE, 0)", "8");
+shouldBe("gl.getIndexedParameter(gl.TRANSFORM_FEEDBACK_BUFFER_START, 0)", "4");
+
+wtu.glErrorShouldBe(gl, gl.NO_ERROR);
+
+debug("");
+debug("bindBufferRange with UNIFORM_BUFFER target");
+var buffer4 = gl.createBuffer();
+var offset = gl.getParameter(gl.UNIFORM_BUFFER_OFFSET_ALIGNMENT);
+gl.bindBufferRange(gl.UNIFORM_BUFFER, 1, buffer4, offset, 12);
+wtu.glErrorShouldBe(gl, gl.NO_ERROR,
+    "Calling bindBufferRange on a buffer where no storage is allocated should succeed.");
+shouldBe("gl.getParameter(gl.UNIFORM_BUFFER_BINDING)", "buffer4");
+shouldBe("gl.getIndexedParameter(gl.UNIFORM_BUFFER_BINDING, 1)", "buffer4");
+shouldBe("gl.getIndexedParameter(gl.UNIFORM_BUFFER_SIZE, 1)", "12");
+shouldBe("gl.getIndexedParameter(gl.UNIFORM_BUFFER_START, 1)", "offset");
+
+gl.bufferData(gl.UNIFORM_BUFFER, offset + 8, gl.STATIC_DRAW);
+shouldBe("gl.getIndexedParameter(gl.UNIFORM_BUFFER_BINDING, 1)", "buffer4");
+shouldBe("gl.getIndexedParameter(gl.UNIFORM_BUFFER_SIZE, 1)", "12");
+shouldBe("gl.getIndexedParameter(gl.UNIFORM_BUFFER_START, 1)", "offset");
+
+gl.bufferData(gl.UNIFORM_BUFFER, offset + 12, gl.STATIC_DRAW);
+shouldBe("gl.getIndexedParameter(gl.UNIFORM_BUFFER_BINDING, 1)", "buffer4");
+shouldBe("gl.getIndexedParameter(gl.UNIFORM_BUFFER_SIZE, 1)", "12");
+shouldBe("gl.getIndexedParameter(gl.UNIFORM_BUFFER_START, 1)", "offset");
+
+wtu.glErrorShouldBe(gl, gl.NO_ERROR);
+
+debug("");
+var successfullyParsed = true;
+</script>
+<script src="../../js/js-test-post.js"></script>
+</body>
+</html>