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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.simplereference.sglrGLContext');
goog.require('framework.common.tcuPixelFormat');
goog.require('framework.common.tcuTexture');
goog.require('framework.common.tcuTextureUtil');
goog.require('framework.delibs.debase.deMath');
goog.require('framework.delibs.debase.deUtil');
goog.require('framework.opengl.gluShaderProgram');
goog.require('framework.opengl.gluShaderUtil');
goog.require('framework.opengl.gluTextureUtil');
goog.require('framework.opengl.simplereference.sglrShaderProgram');
goog.require('framework.referencerenderer.rrDefs');
goog.require('framework.referencerenderer.rrMultisamplePixelBufferAccess');
goog.require('framework.referencerenderer.rrRenderState');
goog.require('framework.referencerenderer.rrRenderer');
goog.require('framework.referencerenderer.rrVertexAttrib');
goog.scope(function() {
var sglrGLContext = framework.opengl.simplereference.sglrGLContext;
var tcuTexture = framework.common.tcuTexture;
var deUtil = framework.delibs.debase.deUtil;
var deMath = framework.delibs.debase.deMath;
var tcuTextureUtil = framework.common.tcuTextureUtil;
var tcuPixelFormat = framework.common.tcuPixelFormat;
var gluShaderProgram = framework.opengl.gluShaderProgram;
var gluShaderUtil = framework.opengl.gluShaderUtil;
var gluTextureUtil = framework.opengl.gluTextureUtil;
var sglrShaderProgram = framework.opengl.simplereference.sglrShaderProgram;
var rrDefs = framework.referencerenderer.rrDefs;
var rrMultisamplePixelBufferAccess = framework.referencerenderer.rrMultisamplePixelBufferAccess;
var rrRenderer = framework.referencerenderer.rrRenderer;
var rrRenderState = framework.referencerenderer.rrRenderState;
var rrVertexAttrib = framework.referencerenderer.rrVertexAttrib;
var DE_ASSERT = function(x) {
if (!x)
throw new Error('Assert failed');
};
/**
* sglrGLContext.GLContext wraps the standard WebGL context to be able to be used interchangeably with the ReferenceContext
* @constructor
* @extends {WebGL2RenderingContext}
* @param {?WebGL2RenderingContext} context
* @param {Array<number>=} viewport
*/
sglrGLContext.GLContext = function(context, viewport) {
DE_ASSERT(context);
var functionwrapper = function(context, fname) {
return function() {
return context[fname].apply(context, arguments);
};
};
var wrap = {};
for (var i in context) {
try {
if (typeof context[i] == 'function') {
wrap[i] = functionwrapper(context, i);
} else {
wrap[i] = context[i];
}
} catch (e) {
throw new Error('GLContext: Error accessing ' + i);
}
}
if (viewport)
context.viewport(viewport[0], viewport[1], viewport[2], viewport[3]);
/**
* createProgram
* @override
* @param {sglrShaderProgram.ShaderProgram=} shader
* @return {!WebGLProgram}
*/
this.createProgram = function(shader) {
var program = new gluShaderProgram.ShaderProgram(
context,
gluShaderProgram.makeVtxFragSources(
shader.m_vertSrc,
shader.m_fragSrc
)
);
if (!program.isOk()) {
bufferedLogToConsole(program.toString());
testFailedOptions('Compile failed', true);
}
return program.getProgram();
};
wrap['createProgram'] = this.createProgram;
/**
* Draws quads from vertex arrays
* @param {number} primitive Primitive type
* @param {number} first First vertex to begin drawing with
* @param {number} count Number of vertices
*/
var drawQuads = function(primitive, first, count) {
context.drawArrays(primitive, first, count);
};
wrap['drawQuads'] = drawQuads;
/**
* @return {number}
*/
var getWidth = function() {
if(viewport)
return viewport[2];
else
return context.drawingBufferWidth;
};
wrap['getWidth'] = getWidth;
/**
* @return {number}
*/
var getHeight = function() {
if(viewport)
return viewport[3];
else
return context.drawingBufferHeight;
};
wrap['getHeight'] = getHeight;
/**
* @param {number} x
* @param {number} y
* @param {number} width
* @param {number} height
* @param {number} format
* @param {number} dataType
* @param {ArrayBuffer|ArrayBufferView} data
*/
var readPixels = function(x, y, width, height, format, dataType, data) {
/** @type {?ArrayBufferView} */ var dataArr;
if (!ArrayBuffer.isView(data)) {
var type = gluTextureUtil.mapGLChannelType(dataType, true);
var dataArrType = tcuTexture.getTypedArray(type);
dataArr = new dataArrType(data);
} else {
dataArr = /** @type {?ArrayBufferView} */ (data);
}
context.readPixels(x, y, width, height, format, dataType, dataArr);
};
wrap['readPixels'] = readPixels;
/**
* @param {number} target
* @param {number} level
* @param {number} internalFormat
* @param {number} width
* @param {number} height
*/
var texImage2DDelegate = function(target, level, internalFormat, width, height) {
var format;
var dataType;
switch(internalFormat)
{
case gl.ALPHA:
case gl.LUMINANCE:
case gl.LUMINANCE_ALPHA:
case gl.RGB:
case gl.RGBA:
format = internalFormat;
dataType = gl.UNSIGNED_BYTE;
break;
default:
{
var transferFmt = gluTextureUtil.getTransferFormat(gluTextureUtil.mapGLInternalFormat(internalFormat));
format = transferFmt.format;
dataType = transferFmt.dataType;
break;
}
}
context.texImage2D(target, level, internalFormat, width, height, 0, format, dataType, null);
};
wrap['texImage2DDelegate'] = texImage2DDelegate;
return wrap;
};
/**
* createProgram - This had to be added here as dummy to remove a warning when the only context used is GLContext (no reference context)
* @override
* @param {sglrShaderProgram.ShaderProgram=} shader
* @return {!WebGLProgram}
*/
sglrGLContext.GLContext.prototype.createProgram = function(shader) {return this.createProgram();};
/**
* @param ctx GL-like context
* @param {string} name
* @return {boolean}
*/
sglrGLContext.isExtensionSupported = function(ctx, name) {
var extns = ctx.getSupportedExtensions();
var found = false;
if (extns) {
var index = extns.indexOf(name);
if (index != -1)
found = true;
}
return found;
};
});
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