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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.referencerenderer.rrShadingContext');
goog.require('framework.referencerenderer.rrFragmentOperations');
goog.require('framework.delibs.debase.deMath');
goog.require('framework.referencerenderer.rrDefs');
goog.require('framework.referencerenderer.rrFragmentOperations');
goog.require('framework.referencerenderer.rrGenericVector');
goog.scope(function() {
var rrShadingContext = framework.referencerenderer.rrShadingContext;
var deMath = framework.delibs.debase.deMath;
var rrDefs = framework.referencerenderer.rrDefs;
var rrFragmentOperations = framework.referencerenderer.rrFragmentOperations;
var rrGenericVector = framework.referencerenderer.rrGenericVector;
var DE_ASSERT = function(x) {
if (!x)
throw new Error('Assert failed');
};
/**
* Fragment shading context
*
* Contains per-primitive information used in fragment shading
* @constructor
* @param {Array<Array<number>>} varying0 (GenericVec4*)
* @param {Array<Array<number>>} varying1 (GenericVec4*)
* @param {Array<Array<number>>} varying2 (GenericVec4*)
*/
rrShadingContext.FragmentShadingContext = function(varying0, varying1, varying2) {
/** @type {Array<Array<Array<number>>>} */ this.varyings = [varying0, varying1, varying2]; //!< Vertex shader outputs. Pointer will be NULL if there is no such vertex.
this.m_width = 0xFFFFFFFF;
this.m_height = 0xFFFFFFFF;
};
/**
* @param {number} width
* @param {number} height
*/
rrShadingContext.FragmentShadingContext.prototype.setSize = function(width, height) {
this.m_width = width;
this.m_height = height;
};
rrShadingContext.FragmentShadingContext.prototype.getWidth = function() {
return this.m_width;
};
rrShadingContext.FragmentShadingContext.prototype.getHeight = function() {
return this.m_height;
};
// Read Varying
/**
* @param {rrFragmentOperations.Fragment} packet
* @param {rrShadingContext.FragmentShadingContext} context
* @param {number} varyingLoc
* @return {Array<number>} (Vector<T, 4>)
*/
rrShadingContext.readTriangleVarying = function(packet, context, varyingLoc) {
var result = deMath.scale(
context.varyings[0][varyingLoc],
packet.barycentric[0]
);
if (context.varyings[1])
result = deMath.add(result, deMath.scale(
context.varyings[1][varyingLoc],
packet.barycentric[1]
));
if (context.varyings[2])
result = deMath.add(result, deMath.scale(
context.varyings[2][varyingLoc],
packet.barycentric[2]
));
return result;
};
/**
* @param {rrFragmentOperations.Fragment} packet
* @param {rrShadingContext.FragmentShadingContext} context
* @param {number} varyingLoc
* @return {Array<number>} (Vector<T, 4>)
*/
rrShadingContext.readVarying = function(packet, context, varyingLoc) {
return rrShadingContext.readTriangleVarying(packet, context, varyingLoc);
};
});
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