1 files changed, 424 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/js/glsl-conformance-test.js b/dom/canvas/test/webgl-conf/checkout/js/glsl-conformance-test.js
new file mode 100644
index 0000000000..12a056ce21
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+++ b/dom/canvas/test/webgl-conf/checkout/js/glsl-conformance-test.js
@@ -0,0 +1,424 @@
+/*
+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.
+*/
+GLSLConformanceTester = (function(){
+
+var wtu = WebGLTestUtils;
+var defaultVertexShader = [
+  "attribute vec4 vPosition;",
+  "void main()",
+  "{",
+  "    gl_Position = vPosition;",
+  "}"
+].join('\n');
+
+var defaultFragmentShader = [
+  "precision mediump float;",
+  "void main()",
+  "{",
+  "    gl_FragColor = vec4(1.0,0.0,0.0,1.0);",
+  "}"
+].join('\n');
+
+var defaultESSL3VertexShader = [
+  "#version 300 es",
+  "in vec4 vPosition;",
+  "void main()",
+  "{",
+  "    gl_Position = vPosition;",
+  "}"
+].join('\n');
+
+var defaultESSL3FragmentShader = [
+  "#version 300 es",
+  "precision mediump float;",
+  "out vec4 my_FragColor;",
+  "void main()",
+  "{",
+  "    my_FragColor = vec4(1.0,0.0,0.0,1.0);",
+  "}"
+].join('\n');
+
+function log(msg) {
+  bufferedLogToConsole(msg);
+}
+
+var vShaderDB = {};
+var fShaderDB = {};
+
+/**
+ * The info parameter should contain the following keys. Note that you may leave
+ * the parameters for one shader out, in which case the default shader will be
+ * used.
+ * vShaderSource: the source code for vertex shader
+ * vShaderId: id of an element containing vertex shader source code. Used if
+ *   vShaderSource is not specified.
+ * vShaderSuccess: true if vertex shader compilation should
+ *   succeed.
+ * fShaderSource: the source code for fragment shader
+ * fShaderId: id of an element containing fragment shader source code. Used if
+ *   fShaderSource is not specified.
+ * fShaderSuccess: true if fragment shader compilation should
+ *   succeed.
+ * linkSuccess: true if link should succeed
+ * passMsg: msg to describe success condition.
+ * render: if true render to unit quad. Green = success
+ * uniforms: an array of objects specifying uniforms to set prior to rendering.
+ *   Each object should have the following keys:
+ *     name: uniform variable name in the shader source. Uniform location will
+ *       be queried based on its name.
+ *     functionName: name of the function used to set the uniform. For example:
+ *       'uniform1i'
+ *     value: value of the uniform to set.
+ */
+function runOneTest(gl, info) {
+  var passMsg = info.passMsg
+  debug("");
+  debug("test: " + passMsg);
+
+  var consoleDiv = document.getElementById("console");
+
+  var vIsDefault = false;
+  var fIsDefault = false;
+
+  if (info.vShaderSource === undefined) {
+    if (info.vShaderId) {
+      info.vShaderSource = document.getElementById(info.vShaderId).text;
+    } else {
+      vIsDefault = true;
+    }
+  }
+  if (info.fShaderSource === undefined) {
+    if (info.fShaderId) {
+      info.fShaderSource = document.getElementById(info.fShaderId).text;
+    } else {
+      fIsDefault = true;
+    }
+  }
+
+  var vLabel = (vIsDefault ? "default" : "test") + " vertex shader";
+  var fLabel = (fIsDefault ? "default" : "test") + " fragment shader";
+  if (vIsDefault) {
+    info.vShaderSource = defaultVertexShader;
+    info.vShaderSuccess = true;
+  }
+  if (fIsDefault) {
+    info.fShaderSource = defaultFragmentShader;
+    info.fShaderSuccess = true;
+  }
+
+  if (vIsDefault != fIsDefault) {
+    // The language version of the default shader is chosen
+    // according to the language version of the other shader.
+    // We rely on "#version 300 es" being in this usual format.
+    // It must be on the first line of the shader according to the spec.
+    if (fIsDefault) {
+      // If we're using the default fragment shader, we need to make sure that
+      // it's language version matches with the vertex shader.
+      if (info.vShaderSource.split('\n')[0] == '#version 300 es') {
+        info.fShaderSource = defaultESSL3FragmentShader;
+      }
+    } else {
+      // If we're using the default vertex shader, we need to make sure that
+      // it's language version matches with the fragment shader.
+      if (info.fShaderSource.split('\n')[0] == '#version 300 es') {
+        info.vShaderSource = defaultESSL3VertexShader;
+      }
+    }
+  }
+
+  var vSource = info.vShaderPrep ? info.vShaderPrep(info.vShaderSource) :
+    info.vShaderSource;
+
+  if (!quietMode()) {
+    wtu.addShaderSource(consoleDiv, vLabel, vSource);
+  }
+
+  // Reuse identical shaders so we test shared shader.
+  var vShader = vShaderDB[vSource];
+  if (!vShader) {
+    // loadShader, with opt_skipCompileStatus: true.
+    vShader = wtu.loadShader(gl, vSource, gl.VERTEX_SHADER, null, null, null, null, true);
+    let compiledVShader = vShader;
+    if (vShader && !gl.getShaderParameter(vShader, gl.COMPILE_STATUS)) {
+      compiledVShader = null;
+    }
+    if (info.vShaderTest) {
+      if (!info.vShaderTest(compiledVShader)) {
+        testFailed("[vertex shader test] " + passMsg);
+        return;
+      }
+    }
+    // As per GLSL 1.0.17 10.27 we can only check for success on
+    // compileShader, not failure.
+    if (!info.ignoreResults && info.vShaderSuccess && !compiledVShader) {
+      testFailed("[unexpected vertex shader compile status] (expected: " +
+                 info.vShaderSuccess + ") " + passMsg);
+      if (!quietMode() && vShader) {
+        const info = gl.getShaderInfoLog(vShader);
+        wtu.addShaderSource(consoleDiv, vLabel + " info log", info);
+      }
+    }
+    // Save the shaders so we test shared shader.
+    if (compiledVShader) {
+      vShaderDB[vSource] = compiledVShader;
+    } else {
+      vShader = null;
+    }
+  }
+
+  var debugShaders = gl.getExtension('WEBGL_debug_shaders');
+  if (debugShaders && vShader && !quietMode()) {
+    wtu.addShaderSource(consoleDiv, vLabel + " translated for driver",
+                        debugShaders.getTranslatedShaderSource(vShader));
+  }
+
+  var fSource = info.fShaderPrep ? info.fShaderPrep(info.fShaderSource) :
+    info.fShaderSource;
+
+  if (!quietMode()) {
+    wtu.addShaderSource(consoleDiv, fLabel, fSource);
+  }
+
+  // Reuse identical shaders so we test shared shader.
+  var fShader = fShaderDB[fSource];
+  if (!fShader) {
+    // loadShader, with opt_skipCompileStatus: true.
+    fShader = wtu.loadShader(gl, fSource, gl.FRAGMENT_SHADER, null, null, null, null, true);
+    let compiledFShader = fShader;
+    if (fShader && !gl.getShaderParameter(fShader, gl.COMPILE_STATUS)) {
+      compiledFShader = null;
+    }
+    if (info.fShaderTest) {
+      if (!info.fShaderTest(compiledFShader)) {
+        testFailed("[fragment shader test] " + passMsg);
+        return;
+      }
+    }
+    //debug(fShader == null ? "fail" : "succeed");
+    // As per GLSL 1.0.17 10.27 we can only check for success on
+    // compileShader, not failure.
+    if (!info.ignoreResults && info.fShaderSuccess && !compiledFShader) {
+      testFailed("[unexpected fragment shader compile status] (expected: " +
+                info.fShaderSuccess + ") " + passMsg);
+      if (!quietMode() && fShader) {
+        const info = gl.getShaderInfoLog(fShader);
+        wtu.addShaderSource(consoleDiv, fLabel + " info log", info);
+      }
+      return;
+    }
+
+    // Safe the shaders so we test shared shader.
+    if (compiledFShader) {
+      fShaderDB[fSource] = compiledFShader;
+    } else {
+      fShader = null;
+    }
+  }
+
+  if (debugShaders && fShader && !quietMode()) {
+    wtu.addShaderSource(consoleDiv, fLabel + " translated for driver",
+                        debugShaders.getTranslatedShaderSource(fShader));
+  }
+
+  if (vShader && fShader) {
+    var program = gl.createProgram();
+    gl.attachShader(program, vShader);
+    gl.attachShader(program, fShader);
+
+    if (vSource.indexOf("vPosition") >= 0) {
+      gl.bindAttribLocation(program, 0, "vPosition");
+    }
+    if (vSource.indexOf("texCoord0") >= 0) {
+      gl.bindAttribLocation(program, 1, "texCoord0");
+    }
+    gl.linkProgram(program);
+    var linked = (gl.getProgramParameter(program, gl.LINK_STATUS) != 0);
+    if (!linked) {
+      var error = gl.getProgramInfoLog(program);
+      log("*** Error linking program '"+program+"':"+error);
+    }
+    if (!info.ignoreResults && linked != info.linkSuccess) {
+      testFailed("[unexpected link status] (expected: " +
+                info.linkSuccess + ") " + passMsg);
+      return;
+    }
+  } else {
+    if (!info.ignoreResults && info.linkSuccess) {
+      testFailed("[link failed] " + passMsg);
+      return;
+    }
+  }
+
+  if (parseInt(wtu.getUrlOptions().dumpShaders)) {
+    var vInfo = {
+      shader: vShader,
+      shaderSuccess: info.vShaderSuccess,
+      label: vLabel,
+      source: vSource
+    };
+    var fInfo = {
+      shader: fShader,
+      shaderSuccess: info.fShaderSuccess,
+      label: fLabel,
+      source: fSource
+    };
+    wtu.dumpShadersInfo(gl, window.location.pathname, passMsg, vInfo, fInfo);
+  }
+
+  if (!info.render) {
+    testPassed(passMsg);
+    return;
+  }
+
+  gl.useProgram(program);
+
+  if (info.uniforms !== undefined) {
+    for (var i = 0; i < info.uniforms.length; ++i) {
+      var uniform = info.uniforms[i];
+      var uniformLocation = gl.getUniformLocation(program, uniform.name);
+      if (uniformLocation !== null) {
+        if (uniform.functionName.includes("Matrix")) {
+          gl[uniform.functionName](uniformLocation, false, uniform.value);
+        } else {
+          gl[uniform.functionName](uniformLocation, uniform.value);
+        }
+        debug(uniform.name + ' set to ' + uniform.value);
+      } else {
+        debug('uniform ' + uniform.name + ' had null location and was not set');
+      }
+    }
+  }
+
+  if (info.uniformBlocks !== undefined) {
+    for (var i = 0; i < info.uniformBlocks.length; ++i) {
+      var uniformBlockIndex = gl.getUniformBlockIndex(program, info.uniformBlocks[i].name);
+      if (uniformBlockIndex !== null) {
+        gl.uniformBlockBinding(program, uniformBlockIndex, i);
+        debug(info.uniformBlocks[i].name + ' (index ' + uniformBlockIndex + ') bound to slot ' + i);
+
+        var uboValueBuffer = gl.createBuffer();
+        gl.bindBufferBase(gl.UNIFORM_BUFFER, i, uboValueBuffer);
+        gl.bufferData(gl.UNIFORM_BUFFER, info.uniformBlocks[i].value, info.uniformBlocks[i].usage || gl.STATIC_DRAW);
+      } else {
+        debug('uniform block' + info.uniformBlocks[i].name + ' had null block index and was not set');
+      }
+    }
+  }
+
+  wtu.setupUnitQuad(gl);
+  wtu.clearAndDrawUnitQuad(gl);
+
+  var div = document.createElement("div");
+  div.className = "testimages";
+  wtu.insertImage(div, "result", wtu.makeImageFromCanvas(gl.canvas));
+  div.appendChild(document.createElement('br'));
+  consoleDiv.appendChild(div);
+
+  var tolerance = 0;
+  if (info.renderTolerance !== undefined) {
+    tolerance = info.renderTolerance;
+  }
+  if (info.renderColor !== undefined) {
+    wtu.checkCanvas(gl, info.renderColor, "should be expected color " + info.renderColor, tolerance);
+  } else {
+    wtu.checkCanvas(gl, [0, 255, 0, 255], "should be green", tolerance);
+  }
+}
+
+function runTests(shaderInfos, opt_contextVersion) {
+  var wtu = WebGLTestUtils;
+  var canvas = document.createElement('canvas');
+  canvas.width = 32;
+  canvas.height = 32;
+  var gl = wtu.create3DContext(canvas, undefined, opt_contextVersion);
+  if (!gl) {
+    testFailed("context does not exist");
+    finishTest();
+    return;
+  }
+
+  for (var i = 0; i < shaderInfos.length; i++) {
+    runOneTest(gl, shaderInfos[i]);
+  }
+
+  finishTest();
+};
+
+function getSource(elem) {
+  var str = elem.text;
+  return str.replace(/^\s*/, '').replace(/\s*$/, '');
+}
+
+function getPassMessage(source) {
+  var lines = source.split('\n');
+  return lines[0].substring(3);
+}
+
+function getSuccess(msg) {
+  if (msg.indexOf("fail") >= 0) {
+    return false;
+  }
+  if (msg.indexOf("succeed") >= 0) {
+    return true;
+  }
+  testFailed("bad test description. Must have 'fail' or 'succeed'");
+}
+
+function setupTest() {
+  var info = {};
+
+  var vShaderElem = document.getElementById('vertexShader');
+  if (vShaderElem) {
+    info.vShaderSource = getSource(vShaderElem);
+    info.passMsg = getPassMessage(info.vShaderSource);
+    info.vShaderSuccess = getSuccess(info.passMsg);
+  }
+
+  var fShaderElem = document.getElementById('fragmentShader');
+  if (fShaderElem) {
+    info.fShaderSource = getSource(fShaderElem);
+    info.passMsg = getPassMessage(info.fShaderSource);
+    info.fShaderSuccess = getSuccess(info.passMsg);
+  }
+
+  // linkSuccess should be true if shader success value is undefined or true for both shaders.
+  info.linkSuccess = info.vShaderSuccess !== false && info.fShaderSuccess !== false;
+
+  if (info.passMsg === undefined) {
+    testFailed("no test shader found.");
+    finishTest();
+    return;
+  }
+
+  return info;
+}
+
+function runTest() {
+  var info = setupTest();
+  description(info.passMsg);
+  runTests([info]);
+}
+
+function runRenderTests(tests, opt_contextVersion) {
+  for (var ii = 0; ii < tests.length; ++ii) {
+    tests[ii].render = true
+  }
+  runTests(tests, opt_contextVersion);
+}
+
+function runRenderTest() {
+  var info = setupTest();
+  description(info.passMsg);
+  runRenderTests([info]);
+}
+
+return {
+  runTest: runTest,
+  runTests: runTests,
+  runRenderTest: runRenderTest,
+  runRenderTests: runRenderTests
+};
+}());