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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.opengl.gluPixelTransfer');
goog.require('framework.common.tcuTexture');
goog.require('framework.delibs.debase.deMath');
goog.require('framework.opengl.gluTextureUtil');
goog.scope(function() {
var gluPixelTransfer = framework.opengl.gluPixelTransfer;
var tcuTexture = framework.common.tcuTexture;
var deMath = framework.delibs.debase.deMath;
var gluTextureUtil = framework.opengl.gluTextureUtil;
gluPixelTransfer.getTransferAlignment = function(format) {
var pixelSize = format.getPixelSize();
if (deMath.deIsPowerOfTwo32(pixelSize))
return Math.min(pixelSize, 8);
else
return 1;
};
gluPixelTransfer.readPixels = function(ctx, x, y, format, dst) {
var width = dst.getWidth();
var height = dst.getHeight();
var arrayType = tcuTexture.getTypedArray(format.type);
var transferFormat = gluTextureUtil.getTransferFormat(format);
ctx.pixelStorei(ctx.PACK_ALIGNMENT, gluPixelTransfer.getTransferAlignment(format));
var resultPixel = dst.getAccess().getDataPtr();
resultPixel = new arrayType(dst.getAccess().getBuffer());
ctx.readPixels(x, y, width, height, transferFormat.format, transferFormat.dataType, resultPixel);
};
/* TODO: implement other functions in C++ file */
});
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