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/*-------------------------------------------------------------------------
* drawElements Quality Program OpenGL ES Utilities
* ------------------------------------------------
*
* Copyright 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
'use strict';
goog.provide('framework.common.tcuTexVerifierUtil');
goog.require('framework.common.tcuFloat');
goog.require('framework.common.tcuTexture');
goog.require('framework.delibs.debase.deMath');
goog.require('framework.delibs.debase.deUtil');
goog.scope(function() {
var tcuTexVerifierUtil = framework.common.tcuTexVerifierUtil;
var deMath = framework.delibs.debase.deMath;
var deUtil = framework.delibs.debase.deUtil;
var tcuFloat = framework.common.tcuFloat;
var tcuTexture = framework.common.tcuTexture;
/**
* @param {number} value
* @param {number} numAccurateBits
* @return {number}
*/
tcuTexVerifierUtil.computeFloatingPointError = function(value, numAccurateBits) {
/** @type {number} */ var numGarbageBits = 23 - numAccurateBits;
/** @type {number} */ var mask = (1 << numGarbageBits) - 1;
/** @type {number} */ var exp = tcuFloat.newFloat32(value).exponent();
/** @type {tcuFloat.deFloat} */ var v1 = new tcuFloat.deFloat();
/** @type {tcuFloat.deFloat} */ var v2 = new tcuFloat.deFloat();
return v1.construct(1, exp, 1 << 23 | mask).getValue() - v2.construct(1, exp, 1 << 23).getValue();
};
/**
* @param {number} numAccurateBits
* @return {number}
*/
tcuTexVerifierUtil.computeFixedPointError = function(numAccurateBits) {
return tcuTexVerifierUtil.computeFloatingPointError(1.0, numAccurateBits);
};
/**
* @param {Array<number>} numAccurateBits
* @return {Array<number>}
*/
tcuTexVerifierUtil.computeFixedPointError_Vector = function(numAccurateBits) {
/** @type {Array<number>} */ var res = [];
for (var ndx = 0; ndx < numAccurateBits.length; ndx++)
res[ndx] = tcuTexVerifierUtil.computeFixedPointError(numAccurateBits[ndx]);
return res;
};
/**
* @param {Array<number>} value
* @param {Array<number>} numAccurateBits
* @return {Array<number>}
*/
tcuTexVerifierUtil.computeFloatingPointError_Vector = function(value, numAccurateBits) {
assertMsgOptions(value.length === numAccurateBits.length, '', false, true);
/** @type {Array<number>} */ var res = [];
for (var ndx = 0; ndx < value.length; ndx++)
res[ndx] = tcuTexVerifierUtil.computeFloatingPointError(value[ndx], numAccurateBits[ndx]);
return res;
};
// Sampler introspection
/**
* @param {tcuTexture.FilterMode} mode
* @return {boolean}
*/
tcuTexVerifierUtil.isNearestMipmapFilter = function(mode) {
return mode == tcuTexture.FilterMode.NEAREST_MIPMAP_NEAREST || mode == tcuTexture.FilterMode.LINEAR_MIPMAP_NEAREST;
};
/**
* @param {tcuTexture.FilterMode} mode
* @return {boolean}
*/
tcuTexVerifierUtil.isLinearMipmapFilter = function(mode) {
return mode == tcuTexture.FilterMode.NEAREST_MIPMAP_LINEAR || mode == tcuTexture.FilterMode.LINEAR_MIPMAP_LINEAR;
};
/**
* @param {tcuTexture.FilterMode} mode
* @return {boolean}
*/
tcuTexVerifierUtil.isMipmapFilter = function(mode) {
return tcuTexVerifierUtil.isNearestMipmapFilter(mode) || tcuTexVerifierUtil.isLinearMipmapFilter(mode);
};
/**
* @param {tcuTexture.FilterMode} mode
* @return {boolean}
*/
tcuTexVerifierUtil.isLinearFilter = function(mode) {
return mode == tcuTexture.FilterMode.LINEAR || mode == tcuTexture.FilterMode.LINEAR_MIPMAP_NEAREST || mode == tcuTexture.FilterMode.LINEAR_MIPMAP_LINEAR;
};
/**
* @param {tcuTexture.FilterMode} mode
* @return {boolean}
*/
tcuTexVerifierUtil.isNearestFilter = function(mode) {
return !tcuTexVerifierUtil.isLinearFilter(mode);
};
/**
* @param {tcuTexture.FilterMode} mode
* @return {tcuTexture.FilterMode}
*/
tcuTexVerifierUtil.getLevelFilter = function(mode) {
return tcuTexVerifierUtil.isLinearFilter(mode) ? tcuTexture.FilterMode.LINEAR : tcuTexture.FilterMode.NEAREST;
};
/**
* @param {tcuTexture.WrapMode} mode
* @return {boolean}
*/
tcuTexVerifierUtil.isWrapModeSupported = function(mode) {
return mode != tcuTexture.WrapMode.MIRRORED_REPEAT_CL && mode != tcuTexture.WrapMode.REPEAT_CL;
};
/**
*
* @param {boolean} normalizedCoords
* @param {number} dim
* @param {number} coord
* @param {number} coordBits
* @param {number} uvBits
* @return {Array<number>}
*/
tcuTexVerifierUtil.computeNonNormalizedCoordBounds = function(normalizedCoords, dim, coord, coordBits, uvBits) {
/** @type {number} */ var coordErr = tcuTexVerifierUtil.computeFloatingPointError(coord, coordBits);
/** @type {number} */ var minN = coord - coordErr;
/** @type {number} */ var maxN = coord + coordErr;
/** @type {number} */ var minA = normalizedCoords ? minN * dim : minN;
/** @type {number} */ var maxA = normalizedCoords ? maxN * dim : maxN;
/** @type {number} */ var minC = minA - tcuTexVerifierUtil.computeFixedPointError(uvBits);
/** @type {number} */ var maxC = maxA + tcuTexVerifierUtil.computeFixedPointError(uvBits);
assertMsgOptions(minC <= maxC, '', false, true);
return [minC, maxC];
};
/**
* @param {Array<number>} coord
* @param {Array<number>} bits
* @return {?Array<tcuTexture.CubeFace>}
*/
tcuTexVerifierUtil.getPossibleCubeFaces = function(coord, bits) {
/** @type {Array<tcuTexture.CubeFace>} */ var faces = [];
/** @type {number} */ var x = coord[0];
/** @type {number} */ var y = coord[1];
/** @type {number} */ var z = coord[2];
/** @type {number} */ var ax = Math.abs(x);
/** @type {number} */ var ay = Math.abs(y);
/** @type {number} */ var az = Math.abs(z);
/** @type {number} */ var ex = tcuTexVerifierUtil.computeFloatingPointError(x, bits[0]);
/** @type {number} */ var ey = tcuTexVerifierUtil.computeFloatingPointError(y, bits[1]);
/** @type {number} */ var ez = tcuTexVerifierUtil.computeFloatingPointError(z, bits[2]);
/** @type {number} */ var numFaces = 0;
if (ay + ey < ax - ex && az + ez < ax - ex) {
if (x >= ex) faces.push(tcuTexture.CubeFace.CUBEFACE_POSITIVE_X);
if (x <= ex) faces.push(tcuTexture.CubeFace.CUBEFACE_NEGATIVE_X);
} else if (ax + ex < ay - ey && az + ez < ay - ey) {
if (y >= ey) faces.push(tcuTexture.CubeFace.CUBEFACE_POSITIVE_Y);
if (y <= ey) faces.push(tcuTexture.CubeFace.CUBEFACE_NEGATIVE_Y);
} else if (ax + ex < az - ez && ay + ey < az - ez) {
if (z >= ez) faces.push(tcuTexture.CubeFace.CUBEFACE_POSITIVE_Z);
if (z <= ez) faces.push(tcuTexture.CubeFace.CUBEFACE_NEGATIVE_Z);
} else {
// One or more components are equal (or within error bounds). Allow all faces where major axis is not zero.
if (ax > ex) {
faces.push(tcuTexture.CubeFace.CUBEFACE_NEGATIVE_X);
faces.push(tcuTexture.CubeFace.CUBEFACE_POSITIVE_X);
}
if (ay > ey) {
faces.push(tcuTexture.CubeFace.CUBEFACE_NEGATIVE_Y);
faces.push(tcuTexture.CubeFace.CUBEFACE_POSITIVE_Y);
}
if (az > ez) {
faces.push(tcuTexture.CubeFace.CUBEFACE_NEGATIVE_Z);
faces.push(tcuTexture.CubeFace.CUBEFACE_POSITIVE_Z);
}
}
return faces.length == 0 ? null : faces;
};
/**
* @param {tcuTexture.Sampler} sampler
* @return {tcuTexture.Sampler}
*/
tcuTexVerifierUtil.getUnnormalizedCoordSampler = function(sampler) {
var copy = /** @type {tcuTexture.Sampler} */ (deUtil.clone(sampler));
copy.normalizedCoords = false;
return copy;
};
/**
* @param {number} a
* @param {number} b
* @return {number}
*/
tcuTexVerifierUtil.imod = function(a, b) {
return deMath.imod(a, b);
};
/**
* @param {number} a
* @return {number}
*/
tcuTexVerifierUtil.mirror = function(a) {
return deMath.mirror(a);
};
/**
* @param {tcuTexture.WrapMode} mode
* @param {number} c
* @param {number} size
* @return {number}
*/
tcuTexVerifierUtil.wrap = function(mode, c, size) {
switch (mode) {
// \note CL and GL modes are handled identically here, as verification process accounts for
// accuracy differences caused by different methods (wrapping vs. denormalizing first).
case tcuTexture.WrapMode.CLAMP_TO_EDGE:
return deMath.clamp(c, 0, size - 1);
case tcuTexture.WrapMode.REPEAT_GL:
case tcuTexture.WrapMode.REPEAT_CL:
return deMath.imod(c, size);
case tcuTexture.WrapMode.MIRRORED_REPEAT_GL:
case tcuTexture.WrapMode.MIRRORED_REPEAT_CL:
return (size - 1) - deMath.mirror(deMath.imod(c, 2 * size) - size);
default:
throw new Error('Wrap mode not supported.');
}
};
});
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