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| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>Sketchfab Lighting Shader Crash</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> |
| <script id='vshader1' type='x-shader/x-vertex'> |
| attribute float testValue; // Can be uniform as well. |
| varying mediump float FragVarying; // Necessary to reproduce. |
| |
| void main() { |
| // Crashes with mat4 as well. Does not crash with vectors. |
| mat2 projectionMatrix = mat2(0.0, 0.0, 0.0, 0.0); |
| if (testValue == 1.0) |
| { |
| // Using the matrix variable appears necessary. |
| projectionMatrix[0][0] = 1.0; |
| } |
| |
| FragVarying = 0.0; |
| // Referencing the matrix is necessary though clearly the compiler |
| // doesn't realize the assignment is useless. |
| gl_Position = vec4(projectionMatrix[1][0], 0.0, 0.0, 1.0); |
| } |
| </script> |
| <script id='fshader1' type='x-shader/x-fragment'> |
| precision mediump float; |
| varying float FragVarying; |
| |
| void main() { |
| gl_FragColor = vec4(FragVarying, 0.0, 0.0, 1.0); |
| } |
| </script> |
| </head> |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script> |
| "use strict"; |
| description("This test demonstrates a crash on the Nexus 5 (Adreno 330) when compiling Sketchfab's lighting shader. <a href='https://code.google.com/p/chromium/issues/detail?id=551937'>crbug.com/551937</a>"); |
| |
| debug(""); |
| |
| var wtu = WebGLTestUtils; |
| var gl = wtu.create3DContext(); |
| |
| gl.canvas.addEventListener("webglcontextlost", function(e) { |
| testFailed("WebGL context lost"); |
| }); |
| |
| if (!gl) { |
| testFailed("WebGL context does not exist"); |
| } else { |
| testPassed("WebGL context exists"); |
| debug(""); |
| |
| var program1 = wtu.setupProgram(gl, ['vshader1', 'fshader1']); |
| if (!gl.getProgramParameter(program1, gl.LINK_STATUS)) { |
| testFailed("Program failed to link"); |
| } else { |
| testPassed("Program linked successfully"); |
| } |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors"); |
| |
| debug(""); |
| } |
| |
| // Cycle through rAF a few times to give any webglcontextlost events a chance to propagate. |
| wtu.waitForComposite(function() { finishTest(); }); |
| |
| debug(""); |
| var successfullyParsed = true; |
| </script> |
| |
| </body> |
| </html> |
