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Diffstat (limited to '')
-rw-r--r-- | dom/canvas/test/webgl-conf/checkout/conformance/attribs/gl-disabled-vertex-attrib-update.html | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/attribs/gl-disabled-vertex-attrib-update.html b/dom/canvas/test/webgl-conf/checkout/conformance/attribs/gl-disabled-vertex-attrib-update.html new file mode 100644 index 0000000000..3ef12fb9aa --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance/attribs/gl-disabled-vertex-attrib-update.html @@ -0,0 +1,79 @@ +<!-- +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 Disabled Vertex Attrib Update Test</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> +<canvas id="example" width="50" height="50"> +</canvas> +<div id="description"></div> +<div id="console"></div> +<script id="vshader" type="x-shader/x-vertex"> +attribute vec4 a_position; +attribute float a_actualValue; +uniform float u_expectedValue; +varying float v_result; +void main() { + gl_Position = a_position; + v_result = a_actualValue == u_expectedValue ? 1.0 : 0.0; +} +</script> + +<script id="fshader" type="x-shader/x-fragment"> +precision mediump float; +varying float v_result; +void main() { + gl_FragColor = v_result > 0.0 ? vec4(0.0, 1.0, 0.0, 1.0) : vec4(1.0, 0.0, 0.0, 1.0); +} +</script> + +<script> +// Tests that repeatedly updating a disabled vertex attribute works as expected. +// This covers an ANGLE bug where dirty bits for current values were ignoring repeated updates. +// Based on ANGLE test (VertexAttributeTest, DisabledAttribUpdates) from https://github.com/google/angle/blob/f7f0b8c3ab21c52cc2915048959361cf628d95f0/src/tests/gl_tests/VertexAttributeTest.cpp +"use strict"; +var wtu = WebGLTestUtils; +description(); + +var gl = wtu.create3DContext("example"); + +var program = wtu.setupProgram(gl, ['vshader', 'fshader']); +gl.useProgram(program); + +var positionLocation = gl.getAttribLocation(program, "a_position"); +var attribLoc = gl.getAttribLocation(program, "a_actualValue"); +gl.vertexAttribPointer(attribLoc, 1, gl.FLOAT, gl.FALSE, 0, 0); + +var uniLoc = gl.getUniformLocation(program, "u_expectedValue"); + +var gridRes = 1; +wtu.setupIndexedQuad(gl, gridRes, positionLocation); + +var testValues = [1, 2, 3, 4]; +for (var i = 0; i < testValues.length; ++i) { + var testValue = testValues[i]; + gl.uniform1f(uniLoc, testValue); + gl.vertexAttrib1f(attribLoc, testValue); + wtu.clearAndDrawIndexedQuad(gl, gridRes); + wtu.checkCanvas(gl, [0, 255, 0, 255], "should be green"); +} + +wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors"); + +var successfullyParsed = true; +</script> +<script src="../../js/js-test-post.js"></script> + +</body> +</html> + |