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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.tcuSurface');
goog.require('framework.common.tcuTexture');
goog.require('framework.delibs.debase.deMath');
goog.require('framework.opengl.gluTextureUtil');
goog.scope(function() {
var tcuSurface = framework.common.tcuSurface;
var tcuTexture = framework.common.tcuTexture;
var deMath = framework.delibs.debase.deMath;
var gluTextureUtil = framework.opengl.gluTextureUtil;
var DE_ASSERT = function(x) {
if (!x)
throw new Error('Assert failed');
};
/**
* \brief RGBA8888 surface
*
* tcuSurface.Surface provides basic pixel storage functionality. Only single format
* (RGBA8888) is supported.
*
* PixelBufferAccess (see tcuTexture.h) provides much more flexible API
* for handling various pixel formats. This is mainly a convinience class.
* @constructor
* @param {number=} width
* @param {number=} height
*/
tcuSurface.Surface = function(width, height) {
width = width || 0;
height = height || 0;
this.setSize(width, height);
};
/**
* @param {number} width
* @param {number} height
*/
tcuSurface.Surface.prototype.setSize = function(width, height) {
this.m_width = width;
this.m_height = height;
if (width * height > 0) {
this.m_data = new ArrayBuffer(4 * width * height);
this.m_pixels = new Uint8Array(this.m_data);
} else {
this.m_data = null;
this.m_pixels = null;
}
};
/**
* @return {number}
*/
tcuSurface.Surface.prototype.getWidth = function() { return this.m_width; };
/**
* @return {number}
*/
tcuSurface.Surface.prototype.getHeight = function() { return this.m_height; };
/**
* @param {number} x
* @param {number} y
* @param {Array<number>} color Vec4 color
*/
tcuSurface.Surface.prototype.setPixel = function(x, y, color) {
DE_ASSERT(deMath.deInBounds32(x, 0, this.m_width));
DE_ASSERT(deMath.deInBounds32(y, 0, this.m_height));
var offset = 4 * (x + y * this.m_width);
for (var i = 0; i < 4; i++)
this.m_pixels[offset + i] = color[i];
};
/**
* @param {number} x
* @param {number} y
* @return {Array<number>}
*/
tcuSurface.Surface.prototype.getPixel = function(x, y) {
DE_ASSERT(deMath.deInBounds32(x, 0, this.m_width));
DE_ASSERT(deMath.deInBounds32(y, 0, this.m_height));
var color = [];
color.length = 4;
var offset = 4 * (x + y * this.m_width);
for (var i = 0; i < 4; i++)
color[i] = this.m_pixels[offset + i];
return color;
};
/**
* @param {number} x
* @param {number} y
* @return {number}
*/
tcuSurface.Surface.prototype.getPixelUintRGB8 = function(x, y) {
DE_ASSERT(deMath.deInBounds32(x, 0, this.m_width));
DE_ASSERT(deMath.deInBounds32(y, 0, this.m_height));
var offset = 4 * (x + y * this.m_width);
return (this.m_pixels[offset] << 16) +
(this.m_pixels[offset + 1] << 8) +
this.m_pixels[offset + 2];
};
/**
* Read the viewport contents into this surface
* @param {*=} ctx WebGL or ref context
* @param {(Array<number>|{x: number, y: number, width: number, height: number})=} view
*/
tcuSurface.Surface.prototype.readViewport = function(ctx, view) {
ctx = ctx || gl;
var v = view || /** @type {Array<number>} */ (ctx.getParameter(gl.VIEWPORT));
/** @type {number} */ var x;
/** @type {number} */ var y;
/** @type {number} */ var width;
/** @type {number} */ var height;
if (v instanceof Array || ArrayBuffer.isView(v)) {
x = v[0];
y = v[1];
width = v[2];
height = v[3];
} else {
x = v.x;
y = v.y;
width = v.width;
height = v.height;
}
if (width != this.m_width || height != this.m_height)
this.setSize(width, height);
ctx.readPixels(x, y, width, height, gl.RGBA, gl.UNSIGNED_BYTE, this.m_pixels);
};
/**
* @return {Uint8Array}
*/
tcuSurface.Surface.prototype.getPixels = function() { return this.m_pixels || null; };
/**
* @return {tcuTexture.PixelBufferAccess} Pixel Buffer Access object
*/
tcuSurface.Surface.prototype.getAccess = function() {
return new tcuTexture.PixelBufferAccess({
format: new tcuTexture.TextureFormat(tcuTexture.ChannelOrder.RGBA, tcuTexture.ChannelType.UNORM_INT8),
width: this.m_width,
height: this.m_height,
data: this.m_data
});
};
tcuSurface.Surface.prototype.getSubAccess = function(x, y, width, height) {
/* TODO: Implement. the deqp getSubAccess() looks broken. It will probably fail if
* x != 0 or width != m_width
*/
throw new Error('Unimplemented');
};
});
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