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Diffstat (limited to 'dom/canvas/test/webgl-conf/checkout/js/tests/gl-bindattriblocation-aliasing.js')
| -rw-r--r-- | dom/canvas/test/webgl-conf/checkout/js/tests/gl-bindattriblocation-aliasing.js | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/js/tests/gl-bindattriblocation-aliasing.js b/dom/canvas/test/webgl-conf/checkout/js/tests/gl-bindattriblocation-aliasing.js new file mode 100644 index 0000000000..4c853fc4fa --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/js/tests/gl-bindattriblocation-aliasing.js @@ -0,0 +1,44 @@ +/* +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. +*/ + +"use strict"; + +var runBindAttribLocationAliasingTest = function(wtu, gl, glFragmentShader, vertexShaderTemplate) { + var typeInfo = [ + { type: 'float', asVec4: 'vec4(0.0, $(var), 0.0, 1.0)' }, + { type: 'vec2', asVec4: 'vec4($(var), 0.0, 1.0)' }, + { type: 'vec3', asVec4: 'vec4($(var), 1.0)' }, + { type: 'vec4', asVec4: '$(var)' }, + ]; + var maxAttributes = gl.getParameter(gl.MAX_VERTEX_ATTRIBS); + // Test all type combinations of a_1 and a_2. + typeInfo.forEach(function(typeInfo1) { + typeInfo.forEach(function(typeInfo2) { + debug('attribute_1: ' + typeInfo1.type + ' attribute_2: ' + typeInfo2.type); + var replaceParams = { + type_1: typeInfo1.type, + type_2: typeInfo2.type, + gl_Position_1: wtu.replaceParams(typeInfo1.asVec4, {var: 'a_1'}), + gl_Position_2: wtu.replaceParams(typeInfo2.asVec4, {var: 'a_2'}) + }; + var strVertexShader = wtu.replaceParams(vertexShaderTemplate, replaceParams); + var glVertexShader = wtu.loadShader(gl, strVertexShader, gl.VERTEX_SHADER); + assertMsg(glVertexShader != null, "Vertex shader compiled successfully."); + // Bind both a_1 and a_2 to the same position and verify the link fails. + // Do so for all valid positions available. + for (var l = 0; l < maxAttributes; l++) { + var glProgram = gl.createProgram(); + gl.bindAttribLocation(glProgram, l, 'a_1'); + gl.bindAttribLocation(glProgram, l, 'a_2'); + gl.attachShader(glProgram, glVertexShader); + gl.attachShader(glProgram, glFragmentShader); + gl.linkProgram(glProgram); + var linkStatus = gl.getProgramParameter(glProgram, gl.LINK_STATUS); + assertMsg(!linkStatus, "Link should fail when both attributes are aliased to location " + l); + } + }); + }); +};
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