| /* |
| ** Copyright (c) 2018 The Khronos Group Inc. |
| ** |
| ** Permission is hereby granted, free of charge, to any person obtaining a |
| ** copy of this software and/or associated documentation files (the |
| ** "Materials"), to deal in the Materials without restriction, including |
| ** without limitation the rights to use, copy, modify, merge, publish, |
| ** distribute, sublicense, and/or sell copies of the Materials, and to |
| ** permit persons to whom the Materials are furnished to do so, subject to |
| ** the following conditions: |
| ** |
| ** The above copyright notice and this permission notice shall be included |
| ** in all copies or substantial portions of the Materials. |
| ** |
| ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. |
| */ |
| |
| "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); |
| } |
| }); |
| }); |
| }; |