| <!-- |
| 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>Negative tests for writting to a shader input with interpolation qualifier</title> |
| <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| <link rel="stylesheet" href="../../resources/glsl-feature-tests.css"/> |
| <script src="../../js/js-test-pre.js"></script> |
| <script src="../../js/webgl-test-utils.js"></script> |
| <script src="../../js/glsl-conformance-test.js"></script> |
| </head> |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| <!-- |
| According to ESSL 3.00.6 section 4.3.4: |
| "Variables declared as in or centroid in may not be written to during shader execution.", |
| these tests ensure that a compile error is generated when using a shader input with interpolation qualifier as l-value. |
| --> |
| <script type="application/javascript"> |
| "use strict"; |
| description(); |
| |
| var vertexShaderTemplate = [ |
| '#version 300 es', |
| '$(InterpolationQualifier) out float v_float_varying;', |
| 'void main()', |
| '{', |
| ' v_float_varying = 1.0;', |
| ' gl_Position = vec4(0.0, 0.0, 0.0, 1.0);', |
| '}' |
| ].join('\n'); |
| |
| var fragmentShaderTemplate = [ |
| '#version 300 es', |
| 'precision mediump float;', |
| '$(InterpolationQualifier) in float v_float_varying;', |
| 'out vec4 my_color;', |
| 'void main()', |
| '{', |
| ' v_float_varying = 1.0;', |
| ' my_color = vec4(1.0, 0.0, 0.0, v_float_varying);', |
| '}' |
| ].join('\n'); |
| |
| var errorMessageTemplate = "Writting to shader inputs with '$(InterpolationQualifier)' qualifier must fail"; |
| |
| var testDataList = [ |
| { |
| InterpolationQualifier: 'flat' |
| }, |
| { |
| InterpolationQualifier: 'smooth' |
| }, |
| { |
| InterpolationQualifier: 'centroid' |
| } |
| ]; |
| |
| var wtu = WebGLTestUtils; |
| |
| var tests = []; |
| for (var i = 0; i < testDataList.length; ++i) { |
| tests.push({ |
| vShaderSource: wtu.replaceParams(vertexShaderTemplate, testDataList[i]), |
| vShaderSuccess: true, |
| fShaderSource: wtu.replaceParams(fragmentShaderTemplate, testDataList[i]), |
| fShaderSuccess: false, |
| linkSuccess: false, |
| passMsg: wtu.replaceParams(errorMessageTemplate, testDataList[i]) |
| }); |
| } |
| |
| GLSLConformanceTester.runTests(tests, 2); |
| </script> |
| </body> |
| </html> |
