1 files changed, 190 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/deqp/framework/referencerenderer/rrMultisamplePixelBufferAccess.js b/dom/canvas/test/webgl-conf/checkout/deqp/framework/referencerenderer/rrMultisamplePixelBufferAccess.js
new file mode 100644
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+++ b/dom/canvas/test/webgl-conf/checkout/deqp/framework/referencerenderer/rrMultisamplePixelBufferAccess.js
@@ -0,0 +1,190 @@
+/*-------------------------------------------------------------------------
+ * 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.rrMultisamplePixelBufferAccess');
+goog.require('framework.common.tcuTexture');
+goog.require('framework.common.tcuTextureUtil');
+goog.require('framework.delibs.debase.deMath');
+
+goog.scope(function() {
+
+var rrMultisamplePixelBufferAccess = framework.referencerenderer.rrMultisamplePixelBufferAccess;
+var tcuTexture = framework.common.tcuTexture;
+var deMath = framework.delibs.debase.deMath;
+var tcuTextureUtil = framework.common.tcuTextureUtil;
+
+var DE_ASSERT = function(x) {
+    if (!x)
+        throw new Error('Assert failed');
+};
+
+/**
+ * \brief Read-write pixel data access to multisampled buffers.
+ *
+ * Multisampled data access follows the multisampled indexing convention.
+ *
+ * Prevents accidental usage of non-multisampled buffer as multisampled
+ * with PixelBufferAccess.
+ * @constructor
+ * @param {tcuTexture.PixelBufferAccess=} rawAccess
+ */
+rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess = function(rawAccess) {
+    this.m_access = rawAccess || new tcuTexture.PixelBufferAccess({
+                                            width: 0,
+                                            height: 0});
+};
+
+/**
+ * @return {tcuTexture.PixelBufferAccess}
+ */
+rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess.prototype.raw = function() { return this.m_access; };
+
+/**
+ * @return {boolean}
+ */
+rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess.prototype.isEmpty = function() { return this.m_access.isEmpty(); };
+
+/**
+ * @return {number}
+ */
+rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess.prototype.getNumSamples = function() { return this.raw().getWidth(); };
+
+/**
+ * @return {tcuTexture.PixelBufferAccess}
+ */
+rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess.prototype.toSinglesampleAccess = function() {
+    DE_ASSERT(this.getNumSamples() == 1);
+
+    return new tcuTexture.PixelBufferAccess({
+                                  format: this.m_access.getFormat(),
+                                  width: this.m_access.getHeight(),
+                                  height: this.m_access.getDepth(),
+                                  depth: 1,
+                                  rowPitch: this.m_access.getSlicePitch(),
+                                  slicePitch: this.m_access.getSlicePitch() * this.m_access.getDepth(),
+                                  data: this.m_access.m_data,
+                                  offset: this.m_access.m_offset});
+};
+
+/**
+ * @param {tcuTexture.PixelBufferAccess} original
+ * @return {rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess}
+ */
+rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess.fromSinglesampleAccess = function(original) {
+    return new rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess(
+                new tcuTexture.PixelBufferAccess({
+                                format: original.getFormat(),
+                                width: 1,
+                                height: original.getWidth(),
+                                depth: original.getHeight(),
+                                rowPitch: original.getFormat().getPixelSize(),
+                                slicePitch: original.getRowPitch(),
+                                data: original.m_data,
+                                offset: original.m_offset}));
+};
+
+/**
+ * @param {tcuTexture.PixelBufferAccess} multisampledAccess
+ * @return {rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess}
+ */
+rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess.fromMultisampleAccess = function(multisampledAccess) {
+    return new rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess(multisampledAccess);
+};
+
+/**
+ * @param {Array<number>} region
+ * @return {rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess}
+ */
+rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess.prototype.getSubregion = function(region) {
+    var x = region[0];
+    var y = region[1];
+    var width = region[2];
+    var height = region[3];
+
+    return rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess.fromMultisampleAccess(tcuTextureUtil.getSubregion(this.raw(), 0, x, y, this.getNumSamples(), width, height));
+};
+
+/**
+ * @return {Array<number>} [x, y, width, height]
+ */
+rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess.prototype.getBufferSize = function() {
+    return [0, 0, this.raw().getHeight(), this.raw().getDepth()];
+};
+
+/**
+ * @param {tcuTexture.PixelBufferAccess} dst
+ */
+rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess.prototype.resolveMultisampleColorBuffer = function(dst) {
+    var src = this;
+    DE_ASSERT(dst.getWidth() == src.raw().getHeight());
+    DE_ASSERT(dst.getHeight() == src.raw().getDepth());
+
+    var numSamples = src.getNumSamples();
+    var sum = [0, 0, 0, 0];
+    for (var y = 0; y < dst.getHeight(); y++) {
+        for (var x = 0; x < dst.getWidth(); x++) {
+            sum[0] = 0;
+            sum[1] = 0;
+            sum[2] = 0;
+            sum[3] = 0;
+
+            for (var s = 0; s < src.raw().getWidth(); s++) {
+                var pixel = src.raw().getPixel(s, x, y);
+                sum[0] += pixel[0];
+                sum[1] += pixel[1];
+                sum[2] += pixel[2];
+                sum[3] += pixel[3];
+            }
+
+            sum[0] /= numSamples;
+            sum[1] /= numSamples;
+            sum[2] /= numSamples;
+            sum[3] /= numSamples;
+
+            dst.setPixel(sum, x, y);
+        }
+    }
+};
+
+/**
+ * @param {number} x
+ * @param {number} y
+ * @return {Array<number>}
+ */
+rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess.prototype.resolveMultisamplePixel = function(x, y) {
+    var sum = [0, 0, 0, 0];
+    for (var s = 0; s < this.getNumSamples(); s++)
+        sum = deMath.add(sum, this.raw().getPixel(s, x, y));
+
+    for (var i = 0; i < sum.length; i++)
+        sum[i] = sum[i] / this.getNumSamples();
+
+    return sum;
+};
+
+/**
+ * @param {Array<number>} color
+ */
+rrMultisamplePixelBufferAccess.MultisamplePixelBufferAccess.prototype.clear = function(color) {
+    this.raw().clear(color);
+};
+
+});