The Tor Browser: content/canvas/src/WebGLProgram.cpp@6474c204b198 (annotated)

content/canvas/src/WebGLProgram.cpp@6474c204b198 (annotated)

content/canvas/src/WebGLProgram.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "WebGLContext.h"
 #include "WebGLShader.h"
 #include "WebGLProgram.h"
 #include "mozilla/dom/WebGLRenderingContextBinding.h"
 #include "GLContext.h"
 using namespace mozilla;
 /** Takes an ASCII string like "foo[i]", turns it into "foo" and returns "[i]" in bracketPart
   *
   * \param string input/output: the string to split, becomes the string without the bracket part
   * \param bracketPart output: gets the bracket part.
   *
   * Notice that if there are multiple brackets like "foo[i].bar[j]", only the last bracket is split.
   */
 static bool SplitLastSquareBracket(nsACString& string, nsCString& bracketPart)
 {
     MOZ_ASSERT(bracketPart.IsEmpty(), "SplitLastSquareBracket must be called with empty bracketPart string");
     if (string.IsEmpty())
         return false;
     char *string_start = string.BeginWriting();
     char *s = string_start + string.Length() - 1;
     if (*s != ']')
         return false;
     while (*s != '[' && s != string_start)
         s--;
     if (*s != '[')
         return false;
     bracketPart.Assign(s);
     *s = 0;
     string.EndWriting();
     string.SetLength(s - string_start);
     return true;
 }
 JSObject*
 WebGLProgram::WrapObject(JSContext *cx) {
     return dom::WebGLProgramBinding::Wrap(cx, this);
 }
 WebGLProgram::WebGLProgram(WebGLContext *context)
     : WebGLContextBoundObject(context)
     , mLinkStatus(false)
     , mGeneration(0)
     , mAttribMaxNameLength(0)
 {
     SetIsDOMBinding();
     mContext->MakeContextCurrent();
     mGLName = mContext->gl->fCreateProgram();
     mContext->mPrograms.insertBack(this);
 }
 void
 WebGLProgram::Delete() {
     DetachShaders();
     mContext->MakeContextCurrent();
     mContext->gl->fDeleteProgram(mGLName);
     LinkedListElement<WebGLProgram>::removeFrom(mContext->mPrograms);
 }
 bool
 WebGLProgram::AttachShader(WebGLShader *shader) {
     if (ContainsShader(shader))
         return false;
     mAttachedShaders.AppendElement(shader);
     mContext->MakeContextCurrent();
     mContext->gl->fAttachShader(GLName(), shader->GLName());
     return true;
 }
 bool
 WebGLProgram::DetachShader(WebGLShader *shader) {
     if (!mAttachedShaders.RemoveElement(shader))
         return false;
     mContext->MakeContextCurrent();
     mContext->gl->fDetachShader(GLName(), shader->GLName());
     return true;
 }
 bool
 WebGLProgram::HasAttachedShaderOfType(GLenum shaderType) {
     for (uint32_t i = 0; i < mAttachedShaders.Length(); ++i) {
         if (mAttachedShaders[i] && mAttachedShaders[i]->ShaderType() == shaderType) {
             return true;
         }
     }
     return false;
 }
 bool
 WebGLProgram::HasBadShaderAttached() {
     for (uint32_t i = 0; i < mAttachedShaders.Length(); ++i) {
         if (mAttachedShaders[i] && !mAttachedShaders[i]->CompileStatus()) {
             return true;
         }
     }
     return false;
 }
 size_t
 WebGLProgram::UpperBoundNumSamplerUniforms() {
     size_t numSamplerUniforms = 0;
     for (size_t i = 0; i < mAttachedShaders.Length(); ++i) {
         const WebGLShader *shader = mAttachedShaders[i];
         if (!shader)
             continue;
         for (size_t j = 0; j < shader->mUniformInfos.Length(); ++j) {
             WebGLUniformInfo u = shader->mUniformInfos[j];
             if (u.type == SH_SAMPLER_2D ||
                 u.type == SH_SAMPLER_CUBE)
             {
                 numSamplerUniforms += u.arraySize;
             }
         }
     }
     return numSamplerUniforms;
 }
 void
 WebGLProgram::MapIdentifier(const nsACString& name, nsCString *mappedName) {
     if (!mIdentifierMap) {
         // if the identifier map doesn't exist yet, build it now
         mIdentifierMap = new CStringMap;
         for (size_t i = 0; i < mAttachedShaders.Length(); i++) {
             for (size_t j = 0; j < mAttachedShaders[i]->mAttributes.Length(); j++) {
                 const WebGLMappedIdentifier& attrib = mAttachedShaders[i]->mAttributes[j];
                 mIdentifierMap->Put(attrib.original, attrib.mapped);
             }
             for (size_t j = 0; j < mAttachedShaders[i]->mUniforms.Length(); j++) {
                 const WebGLMappedIdentifier& uniform = mAttachedShaders[i]->mUniforms[j];
                 mIdentifierMap->Put(uniform.original, uniform.mapped);
             }
         }
     }
     nsCString mutableName(name);
     nsCString bracketPart;
     bool hadBracketPart = SplitLastSquareBracket(mutableName, bracketPart);
     if (hadBracketPart)
         mutableName.AppendLiteral("[0]");
     if (mIdentifierMap->Get(mutableName, mappedName)) {
         if (hadBracketPart) {
             nsCString mappedBracketPart;
             bool mappedHadBracketPart = SplitLastSquareBracket(*mappedName, mappedBracketPart);
             if (mappedHadBracketPart)
                 mappedName->Append(bracketPart);
         }
         return;
     }
     // not found? We might be in the situation we have a uniform array name and the GL's glGetActiveUniform
     // returned its name without [0], as is allowed by desktop GL but not in ES. Let's then try with [0].
     mutableName.AppendLiteral("[0]");
     if (mIdentifierMap->Get(mutableName, mappedName))
         return;
     // not found? return name unchanged. This case happens e.g. on bad user input, or when
     // we're not using identifier mapping, or if we didn't store an identifier in the map because
     // e.g. its mapping is trivial (as happens for short identifiers)
     mappedName->Assign(name);
 }
 void
 WebGLProgram::ReverseMapIdentifier(const nsACString& name, nsCString *reverseMappedName) {
     if (!mIdentifierReverseMap) {
         // if the identifier reverse map doesn't exist yet, build it now
         mIdentifierReverseMap = new CStringMap;
         for (size_t i = 0; i < mAttachedShaders.Length(); i++) {
             for (size_t j = 0; j < mAttachedShaders[i]->mAttributes.Length(); j++) {
                 const WebGLMappedIdentifier& attrib = mAttachedShaders[i]->mAttributes[j];
                 mIdentifierReverseMap->Put(attrib.mapped, attrib.original);
             }
             for (size_t j = 0; j < mAttachedShaders[i]->mUniforms.Length(); j++) {
                 const WebGLMappedIdentifier& uniform = mAttachedShaders[i]->mUniforms[j];
                 mIdentifierReverseMap->Put(uniform.mapped, uniform.original);
             }
         }
     }
     nsCString mutableName(name);
     nsCString bracketPart;
     bool hadBracketPart = SplitLastSquareBracket(mutableName, bracketPart);
     if (hadBracketPart)
         mutableName.AppendLiteral("[0]");
     if (mIdentifierReverseMap->Get(mutableName, reverseMappedName)) {
         if (hadBracketPart) {
             nsCString reverseMappedBracketPart;
             bool reverseMappedHadBracketPart = SplitLastSquareBracket(*reverseMappedName, reverseMappedBracketPart);
             if (reverseMappedHadBracketPart)
                 reverseMappedName->Append(bracketPart);
         }
         return;
     }
     // not found? We might be in the situation we have a uniform array name and the GL's glGetActiveUniform
     // returned its name without [0], as is allowed by desktop GL but not in ES. Let's then try with [0].
     mutableName.AppendLiteral("[0]");
     if (mIdentifierReverseMap->Get(mutableName, reverseMappedName))
         return;
     // not found? return name unchanged. This case happens e.g. on bad user input, or when
     // we're not using identifier mapping, or if we didn't store an identifier in the map because
     // e.g. its mapping is trivial (as happens for short identifiers)
     reverseMappedName->Assign(name);
 }
 WebGLUniformInfo
 WebGLProgram::GetUniformInfoForMappedIdentifier(const nsACString& name) {
     nsCString mutableName(name);
     nsCString bracketPart;
     bool hadBracketPart = SplitLastSquareBracket(mutableName, bracketPart);
     // if there is a bracket, we're either an array or an entry in an array.
     if (hadBracketPart)
         mutableName.AppendLiteral("[0]");
     WebGLUniformInfo info;
     mUniformInfoMap->Get(mutableName, &info);
     // we don't check if that Get failed, as if it did, it left info with default values
     return info;
 }
 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_1(WebGLProgram, mAttachedShaders)
 NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(WebGLProgram, AddRef)
 NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(WebGLProgram, Release)

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content/canvas/src/WebGLProgram.cpp@6474c204b198 (annotated)

content/canvas/src/WebGLProgram.cpp