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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>WebGL uniform array Conformance Tests</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>
</head>
<body>
<div id="description"></div>
<div id="console"></div>
<canvas id="example" width="2" height="2"> </canvas>
<script id="vshader" type="x-shader/x-vertex">#version 300 es
in vec4 a_position;
void main() {
  gl_Position = a_position;
}
</script>

<script id="fshader" type="x-shader/x-fragment">#version 300 es
precision mediump float;
uniform $(type) color[3];
out vec4 myFragColor;
void main() {
  myFragColor = vec4(color[0]$(elem), color[1]$(elem), color[2]$(elem), 1);
}
</script>
<script>
"use strict";
description();
debug("");
var wtu = WebGLTestUtils;
var gl = wtu.create3DContext("example", undefined, 2);

var vSrc = wtu.getScript("vshader");
var fTemplate = wtu.getScript("fshader");

// |color| is defined in fragment shader as an array of 3 elements.
var uniformArraySize = 3;
var initialUniformValue = 99;

var typeInfos = [
  { type: 'float',
    setter: 'uniform1fv',
    elem: '',
    numElementsPerType: 1,
    srcValues: [16, 15],
    srcValuesWithOffset: [0, 0, 16, 15],
    srcValuesWithOffsetAndLength: [0, 0, 16, 15, 0],
    srcOffset: 2,
  },
  { type: 'int',
    setter: 'uniform1iv',
    elem: '',
    numElementsPerType: 1,
    srcValues: [16, 15],
    srcValuesWithOffset: [0, 0, 16, 15],
    srcValuesWithOffsetAndLength: [0, 0, 16, 15, 0],
    srcOffset: 2,
  },
  { type: 'uint',
    setter: 'uniform1uiv',
    elem: '',
    numElementsPerType: 1,
    srcValues: [16, 15],
    srcValuesWithOffset: [0, 0, 16, 15],
    srcValuesWithOffsetAndLength: [0, 0, 16, 15, 0],
    srcOffset: 2,
  },
  { type: 'vec2',
    setter: 'uniform2fv',
    elem: '[1]',
    numElementsPerType: 2,
    srcValues: [16, 15, 14, 13],
    srcValuesWithOffset: [0, 16, 15, 14, 13],
    srcValuesWithOffsetAndLength: [0, 16, 15, 14, 13, 0],
    srcOffset: 1,
  },
  { type: 'ivec2',
    setter: 'uniform2iv',
    elem: '[1]',
    numElementsPerType: 2,
    srcValues: [16, 15, 14, 13],
    srcValuesWithOffset: [0, 16, 15, 14, 13],
    srcValuesWithOffsetAndLength: [0, 16, 15, 14, 13, 0],
    srcOffset: 1,
  },
  { type: 'uvec2',
    setter: 'uniform2uiv',
    elem: '[1]',
    numElementsPerType: 2,
    srcValues: [16, 15, 14, 13],
    srcValuesWithOffset: [0, 16, 15, 14, 13],
    srcValuesWithOffsetAndLength: [0, 16, 15, 14, 13, 0],
    srcOffset: 1,
  },
  { type: 'vec3',
    setter: 'uniform3fv',
    elem: '[2]',
    numElementsPerType: 3,
    srcValues: [16, 15, 14, 13, 12, 11],
    srcValuesWithOffset: [0, 16, 15, 14, 13, 12, 11],
    srcValuesWithOffsetAndLength: [0, 16, 15, 14, 13, 12, 11, 0, 0],
    srcOffset: 1,
  },
  { type: 'ivec3',
    setter: 'uniform3iv',
    elem: '[2]',
    numElementsPerType: 3,
    srcValues: [16, 15, 14, 13, 12, 11],
    srcValuesWithOffset: [0, 16, 15, 14, 13, 12, 11],
    srcValuesWithOffsetAndLength: [0, 16, 15, 14, 13, 12, 11, 0, 0],
    srcOffset: 1,
  },
  { type: 'uvec3',
    setter: 'uniform3uiv',
    elem: '[2]',
    numElementsPerType: 3,
    srcValues: [16, 15, 14, 13, 12, 11],
    srcValuesWithOffset: [0, 16, 15, 14, 13, 12, 11],
    srcValuesWithOffsetAndLength: [0, 16, 15, 14, 13, 12, 11, 0, 0],
    srcOffset: 1,
  },
  { type: 'vec4',
    setter: 'uniform4fv',
    elem: '[3]',
    numElementsPerType: 4,
    srcValues: [16, 15, 14, 13, 12, 11, 10, 9],
    srcValuesWithOffset: [0, 0, 0, 16, 15, 14, 13, 12, 11, 10, 9],
    srcValuesWithOffsetAndLength: [0, 0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 0],
    srcOffset: 3,
  },
  { type: 'ivec4',
    setter: 'uniform4iv',
    elem: '[3]',
    numElementsPerType: 4,
    srcValues: [16, 15, 14, 13, 12, 11, 10, 9],
    srcValuesWithOffset: [0, 0, 0, 16, 15, 14, 13, 12, 11, 10, 9],
    srcValuesWithOffsetAndLength: [0, 0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 0],
    srcOffset: 3,
  },
  { type: 'uvec4',
    setter: 'uniform4uiv',
    elem: '[3]',
    numElementsPerType: 4,
    srcValues: [16, 15, 14, 13, 12, 11, 10, 9],
    srcValuesWithOffset: [0, 0, 0, 16, 15, 14, 13, 12, 11, 10, 9],
    srcValuesWithOffsetAndLength: [0, 0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 0],
    srcOffset: 3,
  },

  // Matrix
  { type: 'mat2',
    setter: 'uniformMatrix2fv',
    elem: '[1][1]',
    numElementsPerType: 4,
    srcValues: [16, 15, 14, 13, 12, 11, 10, 9],
    srcValuesWithOffset: [0, 0, 0, 16, 15, 14, 13, 12, 11, 10, 9],
    srcValuesWithOffsetAndLength: [0, 0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 0],
    srcOffset: 3,
  },
  { type: 'mat3',
    setter: 'uniformMatrix3fv',
    elem: '[2][2]',
    numElementsPerType: 9,
    srcValues: [16, 15, 14, 13, 12, 11, 10, 9, 8],
    srcValuesWithOffset: [0, 0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 8],
    srcValuesWithOffsetAndLength: [0, 0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 8, 0],
    srcOffset: 3,
  },
  { type: 'mat4',
    setter: 'uniformMatrix4fv',
    elem: '[3][3]',
    numElementsPerType: 16,
    srcValues: [16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1],
    srcValuesWithOffset: [0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1],
    srcValuesWithOffsetAndLength: [0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0],
    srcOffset: 2,
  },
  { type: 'mat2x3',
    setter: 'uniformMatrix2x3fv',
    elem: '[1][2]',
    numElementsPerType: 6,
    srcValues: [16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5],
    srcValuesWithOffset: [0, 0, 0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5],
    srcValuesWithOffsetAndLength: [0, 0, 0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 0, 0],
    srcOffset: 4,
  },
  { type: 'mat3x2',
    setter: 'uniformMatrix3x2fv',
    elem: '[2][1]',
    numElementsPerType: 6,
    srcValues: [16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5],
    srcValuesWithOffset: [0, 0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5],
    srcValuesWithOffsetAndLength: [0, 0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 0, 0, 0],
    srcOffset: 3,
  },
  { type: 'mat2x4',
    setter: 'uniformMatrix2x4fv',
    elem: '[1][3]',
    numElementsPerType: 8,
    srcValues: [16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1],
    srcValuesWithOffset: [0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1],
    srcValuesWithOffsetAndLength: [0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0],
    srcOffset: 2,
  },
  { type: 'mat4x2',
    setter: 'uniformMatrix4x2fv',
    elem: '[3][1]',
    numElementsPerType: 8,
    srcValues: [16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1],
    srcValuesWithOffset: [0, 0, 0, 0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1],
    srcValuesWithOffsetAndLength: [0, 0, 0, 0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0],
    srcOffset: 5,
  },
  { type: 'mat3x4',
    setter: 'uniformMatrix3x4fv',
    elem: '[2][3]',
    numElementsPerType: 12,
    srcValues: [16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5],
    srcValuesWithOffset: [0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5],
    srcValuesWithOffsetAndLength: [0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 0, 0, 0, 0],
    srcOffset: 2,
  },
  { type: 'mat4x3',
    setter: 'uniformMatrix4x3fv',
    elem: '[3][2]',
    numElementsPerType: 12,
    srcValues: [16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5],
    srcValuesWithOffset: [0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5],
    srcValuesWithOffsetAndLength: [0, 0, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 0, 0, 0, 0],
    srcOffset: 2,
  },

];

function checkUniformValues(program, typeInfo, useInitialValues) {
  var numSrcValues = typeInfo.srcValues.length / typeInfo.numElementsPerType;
  for (var ii = 0; ii < uniformArraySize; ++ii) {
    var expectedValues;
    if (useInitialValues || ii >= numSrcValues) {
      expectedValues = new Array(typeInfo.numElementsPerType);
      for (var jj = 0; jj < typeInfo.numElementsPerType; ++jj) {
        expectedValues[jj] = initialUniformValue;
      }
    } else {
      expectedValues = typeInfo.srcValues.slice(
          typeInfo.numElementsPerType * ii, typeInfo.numElementsPerType * (ii + 1));
    }
    var elemLoc = gl.getUniformLocation(program, "color[" + ii + "]");
    wtu.glErrorShouldBe(gl, gl.NO_ERROR,
        "can get location of element " + ii + " of array from gl.getUniformLocation");
    var value = gl.getUniform(program, elemLoc);
    wtu.glErrorShouldBe(gl, gl.NO_ERROR,
        "can get value of element " + ii + " of array from gl.getUniform");
    var equal = true;
    if (value === null) {
      equal = false;
    } else if (typeInfo.numElementsPerType == 1) {
      if (value != expectedValues[0]) {
        equal = false;
      }
    } else {
      for (var jj = 0; jj < typeInfo.numElementsPerType; ++jj) {
        if (value[jj] != expectedValues[jj]) {
          equal = false;
          break;
        }
      }
    }
    assertMsg(equal,
        "value put in (" + expectedValues + ") matches value pulled out (" +
        (value === null ? "null" : value) + ")");
  }
}

for (var tt = 0; tt < typeInfos.length; ++tt) {
  var typeInfo = typeInfos[tt];
  debug("");
  debug("check " + typeInfo.type);
  var srcLength = typeInfo.srcValues.length;
  var fSrc = wtu.replaceParams(fTemplate, typeInfo);
  var program = wtu.loadProgram(gl, vSrc, fSrc);
  if (!program) {
    testFailed("Failed to create the program");
    continue;
  }
  gl.useProgram(program);

  var loc = gl.getUniformLocation(program, "color[0]");
  if (!loc) {
    testFailed("Failed to obtain the location of the uniform");
    continue;
  }

  function setter(loc, array, srcOffset, srcLength) {
    var isMatrix = (typeInfo.setter.indexOf("Matrix") == 7);
    if (typeof(srcOffset) != 'undefined') {
      if (isMatrix) {
        gl[typeInfo.setter](loc, gl.FALSE, array, srcOffset, srcLength);
      } else {
        gl[typeInfo.setter](loc, array, srcOffset, srcLength);
      }
    } else if (typeof(srcLength) != 'undefined') {
      if (isMatrix) {
        gl[typeInfo.setter](loc, gl.FALSE, array, srcOffset);
      } else {
        gl[typeInfo.setter](loc, array, srcOffset);
      }
    } else {
      if (isMatrix) {
        gl[typeInfo.setter](loc, gl.FALSE, array);
      } else {
        gl[typeInfo.setter](loc, array);
      }
    }
  }

  // Initialize uniforms to value 99 and verify it.
  var initValues = new Array(typeInfo.numElementsPerType * uniformArraySize);
  for (var ii = 0; ii < typeInfo.numElementsPerType * uniformArraySize; ++ii) {
    initValues[ii] = initialUniformValue;
  }
  setter(loc, initValues);
  wtu.glErrorShouldBe(gl, gl.NO_ERROR,
      "no error from initializing uniforms to 99");
  checkUniformValues(program, typeInfo, true);

  setter(loc, typeInfo.srcValues);
  wtu.glErrorShouldBe(gl, gl.NO_ERROR,
      "can set an array of uniforms with gl." + typeInfo.setter +
      " without srcOffset / srcLength");
  checkUniformValues(program, typeInfo);

  setter(loc, typeInfo.srcValues, 0);
  wtu.glErrorShouldBe(gl, gl.NO_ERROR,
      "can set an array of uniforms with gl." + typeInfo.setter +
      " with srcOffset = 0");
  checkUniformValues(program, typeInfo);

  setter(loc, typeInfo.srcValues, 0, 0);
  wtu.glErrorShouldBe(gl, gl.NO_ERROR,
      "can set an array of uniforms with gl." + typeInfo.setter +
      " with srcOffset = 0 / srcLength = 0");
  checkUniformValues(program, typeInfo);

  setter(loc, typeInfo.srcValuesWithOffset, typeInfo.srcOffset);
  wtu.glErrorShouldBe(gl, gl.NO_ERROR,
      "can set an array of uniforms with gl." + typeInfo.setter +
      " with srcOffset = " + typeInfo.srcOffset);
  checkUniformValues(program, typeInfo);

  setter(loc, typeInfo.srcValuesWithOffset, typeInfo.srcOffset, 0);
  wtu.glErrorShouldBe(gl, gl.NO_ERROR,
      "can set an array of uniforms with gl." + typeInfo.setter +
      " with srcOffset = " + typeInfo.srcOffset + " / srcLength = 0");
  checkUniformValues(program, typeInfo);

  setter(loc, typeInfo.srcValuesWithOffsetAndLength, typeInfo.srcOffset, srcLength);
  wtu.glErrorShouldBe(gl, gl.NO_ERROR,
      "can set an array of uniforms with gl." + typeInfo.setter +
      " with srcOffset = " + typeInfo.srcOffset + " / srcLength = " + srcLength);
  checkUniformValues(program, typeInfo);

  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no errors");

  // Negative tests
  setter(loc, typeInfo.srcValues, typeInfo.srcValues.length + 1);
  wtu.glErrorShouldBe(gl, gl.INVALID_VALUE,
      "gl." + typeInfo.setter + " with srcOffset out-of-bounds");

  setter(loc, typeInfo.srcValues, 0, typeInfo.srcValues.length + 1);
  wtu.glErrorShouldBe(gl, gl.INVALID_VALUE,
      "gl." + typeInfo.setter + " with srcLength out-of-bounds");

  setter(loc, typeInfo.srcValues, typeInfo.srcOffset, srcLength);
  wtu.glErrorShouldBe(gl, gl.INVALID_VALUE,
      "gl." + typeInfo.setter + " with srcOffset + srcLength out-of-bounds");

  setter(loc, typeInfo.srcValues, typeInfo.srcValues.length);
  wtu.glErrorShouldBe(gl, gl.INVALID_VALUE,
      "gl." + typeInfo.setter + " with 0 data");

  if (typeInfo.numElementsPerType > 1) {
    setter(loc, typeInfo.srcValuesWithOffsetAndLength, typeInfo.srcOffset);
    wtu.glErrorShouldBe(gl, gl.INVALID_VALUE,
        "gl." + typeInfo.setter + " with array length minus srcOffset not multiple of " + typeInfo.type);
  }
}

debug("");
var successfullyParsed = true;

</script>
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