зеркало из https://github.com/mozilla/pjs.git
372 строки
17 KiB
C++
372 строки
17 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Mozilla Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2009
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Vladimir Vukicevic <vladimir@pobox.com>
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* Mark Steele <mwsteele@gmail.com>
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* Bas Schouten <bschouten@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include <string.h>
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#include <stdio.h>
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#include "prlink.h"
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#include "GLContext.h"
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#include "GLContextProvider.h"
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namespace mozilla {
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namespace gl {
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// define this here since it's global to GLContextProvider, not any
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// specific implementation
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typedef GLContextProvider::ContextFormat ContextFormat;
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const ContextFormat ContextFormat::BasicRGBA32Format(ContextFormat::BasicRGBA32);
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#define MAX_SYMBOL_LENGTH 128
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#define MAX_SYMBOL_NAMES 5
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PRBool
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LibrarySymbolLoader::OpenLibrary(const char *library)
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{
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PRLibSpec lspec;
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lspec.type = PR_LibSpec_Pathname;
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lspec.value.pathname = library;
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mLibrary = PR_LoadLibraryWithFlags(lspec, PR_LD_LAZY | PR_LD_LOCAL);
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if (!mLibrary)
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return PR_FALSE;
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return PR_TRUE;
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}
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PRBool
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LibrarySymbolLoader::LoadSymbols(SymLoadStruct *firstStruct, PRBool tryplatform, const char *prefix)
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{
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return LoadSymbols(mLibrary, firstStruct, tryplatform ? mLookupFunc : nsnull, prefix);
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}
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PRFuncPtr
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LibrarySymbolLoader::LookupSymbol(PRLibrary *lib,
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const char *sym,
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PlatformLookupFunction lookupFunction)
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{
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PRFuncPtr res = 0;
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// try finding it in the library directly, if we have one
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if (lib) {
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res = PR_FindFunctionSymbol(lib, sym);
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}
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// try finding it in the process
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if (!res) {
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PRLibrary *leakedLibRef;
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res = PR_FindFunctionSymbolAndLibrary(sym, &leakedLibRef);
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}
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// no? then try looking it up via the lookup symbol
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if (!res && lookupFunction) {
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res = lookupFunction(sym);
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}
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return res;
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}
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PRBool
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LibrarySymbolLoader::LoadSymbols(PRLibrary *lib,
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SymLoadStruct *firstStruct,
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PlatformLookupFunction lookupFunction,
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const char *prefix)
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{
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char sbuf[MAX_SYMBOL_LENGTH * 2];
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SymLoadStruct *ss = firstStruct;
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while (ss->symPointer) {
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*ss->symPointer = 0;
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for (int i = 0; i < MAX_SYMBOL_NAMES; i++) {
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if (ss->symNames[i] == nsnull)
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break;
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const char *s = ss->symNames[i];
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if (prefix && *prefix != 0) {
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strcpy(sbuf, prefix);
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strcat(sbuf, ss->symNames[i]);
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s = sbuf;
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}
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PRFuncPtr p = LookupSymbol(lib, s, lookupFunction);
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if (p) {
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*ss->symPointer = p;
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break;
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}
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}
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if (*ss->symPointer == 0) {
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fprintf (stderr, "Can't find symbol '%s'\n", ss->symNames[0]);
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return PR_FALSE;
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}
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ss++;
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}
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return PR_TRUE;
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}
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/*
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* XXX - we should really know the ARB/EXT variants of these
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* instead of only handling the symbol if it's exposed directly.
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*/
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PRBool
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GLContext::InitWithPrefix(const char *prefix, PRBool trygl)
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{
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if (mInitialized) {
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return PR_TRUE;
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}
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SymLoadStruct symbols[] = {
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{ (PRFuncPtr*) &fActiveTexture, { "ActiveTexture", "ActiveTextureARB", NULL } },
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{ (PRFuncPtr*) &fAttachShader, { "AttachShader", "AttachShaderARB", NULL } },
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{ (PRFuncPtr*) &fBindAttribLocation, { "BindAttribLocation", "BindAttribLocationARB", NULL } },
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{ (PRFuncPtr*) &fBindBuffer, { "BindBuffer", "BindBufferARB", NULL } },
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{ (PRFuncPtr*) &fBindTexture, { "BindTexture", "BindTextureARB", NULL } },
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{ (PRFuncPtr*) &fBlendColor, { "BlendColor", NULL } },
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{ (PRFuncPtr*) &fBlendEquation, { "BlendEquation", NULL } },
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{ (PRFuncPtr*) &fBlendEquationSeparate, { "BlendEquationSeparate", "BlendEquationSeparateEXT", NULL } },
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{ (PRFuncPtr*) &fBlendFunc, { "BlendFunc", NULL } },
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{ (PRFuncPtr*) &fBlendFuncSeparate, { "BlendFuncSeparate", "BlendFuncSeparateEXT", NULL } },
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{ (PRFuncPtr*) &fBufferData, { "BufferData", NULL } },
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{ (PRFuncPtr*) &fBufferSubData, { "BufferSubData", NULL } },
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{ (PRFuncPtr*) &fClear, { "Clear", NULL } },
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{ (PRFuncPtr*) &fClearColor, { "ClearColor", NULL } },
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#ifdef USE_GLES2
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{ (PRFuncPtr*) &fClearDepthf, { "ClearDepthf", NULL } },
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#else
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{ (PRFuncPtr*) &fClearDepth, { "ClearDepth", NULL } },
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#endif
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{ (PRFuncPtr*) &fClearStencil, { "ClearStencil", NULL } },
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{ (PRFuncPtr*) &fColorMask, { "ColorMask", NULL } },
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{ (PRFuncPtr*) &fCreateProgram, { "CreateProgram", "CreateProgramARB", NULL } },
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{ (PRFuncPtr*) &fCreateShader, { "CreateShader", "CreateShaderARB", NULL } },
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{ (PRFuncPtr*) &fCullFace, { "CullFace", NULL } },
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{ (PRFuncPtr*) &fDeleteBuffers, { "DeleteBuffers", "DeleteBuffersARB", NULL } },
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{ (PRFuncPtr*) &fDeleteTextures, { "DeleteTextures", "DeleteTexturesARB", NULL } },
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{ (PRFuncPtr*) &fDeleteProgram, { "DeleteProgram", "DeleteProgramARB", NULL } },
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{ (PRFuncPtr*) &fDeleteShader, { "DeleteShader", "DeleteShaderARB", NULL } },
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{ (PRFuncPtr*) &fDetachShader, { "DetachShader", "DetachShaderARB", NULL } },
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{ (PRFuncPtr*) &fDepthFunc, { "DepthFunc", NULL } },
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{ (PRFuncPtr*) &fDepthMask, { "DepthMask", NULL } },
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#ifdef USE_GLES2
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{ (PRFuncPtr*) &fDepthRangef, { "DepthRangef", NULL } },
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#else
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{ (PRFuncPtr*) &fDepthRange, { "DepthRange", NULL } },
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#endif
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{ (PRFuncPtr*) &fDisable, { "Disable", NULL } },
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#ifndef USE_GLES2
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{ (PRFuncPtr*) &fDisableClientState, { "DisableClientState", NULL } },
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#endif
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{ (PRFuncPtr*) &fDisableVertexAttribArray, { "DisableVertexAttribArray", "DisableVertexAttribArrayARB", NULL } },
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{ (PRFuncPtr*) &fDrawArrays, { "DrawArrays", NULL } },
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{ (PRFuncPtr*) &fDrawElements, { "DrawElements", NULL } },
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{ (PRFuncPtr*) &fEnable, { "Enable", NULL } },
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#ifndef USE_GLES2
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{ (PRFuncPtr*) &fEnableClientState, { "EnableClientState", NULL } },
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#endif
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{ (PRFuncPtr*) &fEnableVertexAttribArray, { "EnableVertexAttribArray", "EnableVertexAttribArrayARB", NULL } },
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{ (PRFuncPtr*) &fFinish, { "Finish", NULL } },
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{ (PRFuncPtr*) &fFlush, { "Flush", NULL } },
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{ (PRFuncPtr*) &fFrontFace, { "FrontFace", NULL } },
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{ (PRFuncPtr*) &fGetActiveAttrib, { "GetActiveAttrib", "GetActiveAttribARB", NULL } },
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{ (PRFuncPtr*) &fGetActiveUniform, { "GetActiveUniform", "GetActiveUniformARB", NULL } },
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{ (PRFuncPtr*) &fGetAttachedShaders, { "GetAttachedShaders", "GetAttachedShadersARB", NULL } },
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{ (PRFuncPtr*) &fGetAttribLocation, { "GetAttribLocation", "GetAttribLocationARB", NULL } },
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{ (PRFuncPtr*) &fGetIntegerv, { "GetIntegerv", NULL } },
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{ (PRFuncPtr*) &fGetFloatv, { "GetFloatv", NULL } },
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{ (PRFuncPtr*) &fGetBooleanv, { "GetBooleanv", NULL } },
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{ (PRFuncPtr*) &fGetBufferParameteriv, { "GetBufferParameteriv", "GetBufferParameterivARB", NULL } },
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{ (PRFuncPtr*) &fGenBuffers, { "GenBuffers", "GenBuffersARB", NULL } },
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{ (PRFuncPtr*) &fGenTextures, { "GenTextures", NULL } },
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{ (PRFuncPtr*) &fGetError, { "GetError", NULL } },
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{ (PRFuncPtr*) &fGetProgramiv, { "GetProgramiv", "GetProgramivARB", NULL } },
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{ (PRFuncPtr*) &fGetProgramInfoLog, { "GetProgramInfoLog", "GetProgramInfoLogARB", NULL } },
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#ifndef USE_GLES2
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{ (PRFuncPtr*) &fTexCoordPointer, { "TexCoordPointer", NULL } },
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#endif
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{ (PRFuncPtr*) &fTexParameteri, { "TexParameteri", NULL } },
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{ (PRFuncPtr*) &fTexParameterf, { "TexParameterf", NULL } },
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{ (PRFuncPtr*) &fGetString, { "GetString", NULL } },
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{ (PRFuncPtr*) &fGetTexParameterfv, { "GetTexParameterfv", NULL } },
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{ (PRFuncPtr*) &fGetTexParameteriv, { "GetTexParameteriv", NULL } },
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{ (PRFuncPtr*) &fGetUniformfv, { "GetUniformfv", "GetUniformfvARB", NULL } },
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{ (PRFuncPtr*) &fGetUniformiv, { "GetUniformiv", "GetUniformivARB", NULL } },
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{ (PRFuncPtr*) &fGetUniformLocation, { "GetUniformLocation", "GetUniformLocationARB", NULL } },
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{ (PRFuncPtr*) &fGetVertexAttribfv, { "GetVertexAttribfv", "GetVertexAttribfvARB", NULL } },
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{ (PRFuncPtr*) &fGetVertexAttribiv, { "GetVertexAttribiv", "GetVertexAttribivARB", NULL } },
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{ (PRFuncPtr*) &fHint, { "Hint", NULL } },
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{ (PRFuncPtr*) &fIsBuffer, { "IsBuffer", "IsBufferARB", NULL } },
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{ (PRFuncPtr*) &fIsEnabled, { "IsEnabled", NULL } },
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{ (PRFuncPtr*) &fIsProgram, { "IsProgram", "IsProgramARB", NULL } },
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{ (PRFuncPtr*) &fIsShader, { "IsShader", "IsShaderARB", NULL } },
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{ (PRFuncPtr*) &fIsTexture, { "IsTexture", "IsTextureARB", NULL } },
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{ (PRFuncPtr*) &fLineWidth, { "LineWidth", NULL } },
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{ (PRFuncPtr*) &fLinkProgram, { "LinkProgram", "LinkProgramARB", NULL } },
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{ (PRFuncPtr*) &fPixelStorei, { "PixelStorei", NULL } },
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{ (PRFuncPtr*) &fPolygonOffset, { "PolygonOffset", NULL } },
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#ifndef USE_GLES2
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{ (PRFuncPtr*) &fReadBuffer, { "ReadBuffer", NULL } },
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#endif
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{ (PRFuncPtr*) &fReadPixels, { "ReadPixels", NULL } },
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{ (PRFuncPtr*) &fSampleCoverage, { "SampleCoverage", NULL } },
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{ (PRFuncPtr*) &fScissor, { "Scissor", NULL } },
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{ (PRFuncPtr*) &fStencilFunc, { "StencilFunc", NULL } },
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{ (PRFuncPtr*) &fStencilFuncSeparate, { "StencilFuncSeparate", "StencilFuncSeparateEXT", NULL } },
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{ (PRFuncPtr*) &fStencilMask, { "StencilMask", NULL } },
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{ (PRFuncPtr*) &fStencilMaskSeparate, { "StencilMaskSeparate", "StencilMaskSeparateEXT", NULL } },
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{ (PRFuncPtr*) &fStencilOp, { "StencilOp", NULL } },
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{ (PRFuncPtr*) &fStencilOpSeparate, { "StencilOpSeparate", "StencilOpSeparateEXT", NULL } },
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#ifndef USE_GLES2
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{ (PRFuncPtr*) &fTexEnvf, { "TexEnvf", NULL } },
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#endif
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{ (PRFuncPtr*) &fTexImage2D, { "TexImage2D", NULL } },
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{ (PRFuncPtr*) &fTexSubImage2D, { "TexSubImage2D", NULL } },
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{ (PRFuncPtr*) &fUniform1f, { "Uniform1f", NULL } },
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{ (PRFuncPtr*) &fUniform1fv, { "Uniform1fv", NULL } },
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{ (PRFuncPtr*) &fUniform1i, { "Uniform1i", NULL } },
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{ (PRFuncPtr*) &fUniform1iv, { "Uniform1iv", NULL } },
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{ (PRFuncPtr*) &fUniform2f, { "Uniform2f", NULL } },
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{ (PRFuncPtr*) &fUniform2fv, { "Uniform2fv", NULL } },
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{ (PRFuncPtr*) &fUniform2i, { "Uniform2i", NULL } },
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{ (PRFuncPtr*) &fUniform2iv, { "Uniform2iv", NULL } },
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{ (PRFuncPtr*) &fUniform3f, { "Uniform3f", NULL } },
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{ (PRFuncPtr*) &fUniform3fv, { "Uniform3fv", NULL } },
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{ (PRFuncPtr*) &fUniform3i, { "Uniform3i", NULL } },
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{ (PRFuncPtr*) &fUniform3iv, { "Uniform3iv", NULL } },
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{ (PRFuncPtr*) &fUniform4f, { "Uniform4f", NULL } },
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{ (PRFuncPtr*) &fUniform4fv, { "Uniform4fv", NULL } },
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{ (PRFuncPtr*) &fUniform4i, { "Uniform4i", NULL } },
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{ (PRFuncPtr*) &fUniform4iv, { "Uniform4iv", NULL } },
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{ (PRFuncPtr*) &fUniformMatrix2fv, { "UniformMatrix2fv", NULL } },
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{ (PRFuncPtr*) &fUniformMatrix3fv, { "UniformMatrix3fv", NULL } },
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{ (PRFuncPtr*) &fUniformMatrix4fv, { "UniformMatrix4fv", NULL } },
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{ (PRFuncPtr*) &fUseProgram, { "UseProgram", NULL } },
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{ (PRFuncPtr*) &fValidateProgram, { "ValidateProgram", NULL } },
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{ (PRFuncPtr*) &fVertexAttribPointer, { "VertexAttribPointer", NULL } },
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{ (PRFuncPtr*) &fVertexAttrib1f, { "VertexAttrib1f", NULL } },
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{ (PRFuncPtr*) &fVertexAttrib2f, { "VertexAttrib2f", NULL } },
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{ (PRFuncPtr*) &fVertexAttrib3f, { "VertexAttrib3f", NULL } },
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{ (PRFuncPtr*) &fVertexAttrib4f, { "VertexAttrib4f", NULL } },
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{ (PRFuncPtr*) &fVertexAttrib1fv, { "VertexAttrib1fv", NULL } },
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{ (PRFuncPtr*) &fVertexAttrib2fv, { "VertexAttrib2fv", NULL } },
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{ (PRFuncPtr*) &fVertexAttrib3fv, { "VertexAttrib3fv", NULL } },
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{ (PRFuncPtr*) &fVertexAttrib4fv, { "VertexAttrib4fv", NULL } },
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#ifndef USE_GLES2
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{ (PRFuncPtr*) &fVertexPointer, { "VertexPointer", NULL } },
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#endif
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{ (PRFuncPtr*) &fViewport, { "Viewport", NULL } },
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{ (PRFuncPtr*) &fCompileShader, { "CompileShader", NULL } },
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{ (PRFuncPtr*) &fCopyTexImage2D, { "CopyTexImage2D", NULL } },
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{ (PRFuncPtr*) &fCopyTexSubImage2D, { "CopyTexSubImage2D", NULL } },
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{ (PRFuncPtr*) &fGetShaderiv, { "GetShaderiv", NULL } },
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{ (PRFuncPtr*) &fGetShaderInfoLog, { "GetShaderInfoLog", NULL } },
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{ (PRFuncPtr*) &fGetShaderSource, { "GetShaderSource", NULL } },
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{ (PRFuncPtr*) &fShaderSource, { "ShaderSource", NULL } },
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{ (PRFuncPtr*) &fVertexAttribPointer, { "VertexAttribPointer", NULL } },
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{ (PRFuncPtr*) &fBindFramebuffer, { "BindFramebuffer", "BindFramebufferEXT", NULL } },
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{ (PRFuncPtr*) &fBindRenderbuffer, { "BindRenderbuffer", "BindRenderbufferEXT", NULL } },
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{ (PRFuncPtr*) &fCheckFramebufferStatus, { "CheckFramebufferStatus", "CheckFramebufferStatusEXT", NULL } },
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{ (PRFuncPtr*) &fDeleteFramebuffers, { "DeleteFramebuffers", "DeleteFramebuffersEXT", NULL } },
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{ (PRFuncPtr*) &fDeleteRenderbuffers, { "DeleteRenderbuffers", "DeleteRenderbuffersEXT", NULL } },
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{ (PRFuncPtr*) &fFramebufferRenderbuffer, { "FramebufferRenderbuffer", "FramebufferRenderbufferEXT", NULL } },
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{ (PRFuncPtr*) &fFramebufferTexture2D, { "FramebufferTexture2D", "FramebufferTexture2DEXT", NULL } },
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{ (PRFuncPtr*) &fGenerateMipmap, { "GenerateMipmap", "GenerateMipmapEXT", NULL } },
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{ (PRFuncPtr*) &fGenFramebuffers, { "GenFramebuffers", "GenFramebuffersEXT", NULL } },
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{ (PRFuncPtr*) &fGenRenderbuffers, { "GenRenderbuffers", "GenRenderbuffersEXT", NULL } },
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{ (PRFuncPtr*) &fGetFramebufferAttachmentParameteriv, { "GetFramebufferAttachmentParameteriv", "GetFramebufferAttachmentParameterivEXT", NULL } },
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{ (PRFuncPtr*) &fGetRenderbufferParameteriv, { "GetRenderbufferParameteriv", "GetRenderbufferParameterivEXT", NULL } },
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{ (PRFuncPtr*) &fIsFramebuffer, { "IsFramebuffer", "IsFramebufferEXT", NULL } },
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{ (PRFuncPtr*) &fIsRenderbuffer, { "IsRenderbuffer", "IsRenderbufferEXT", NULL } },
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{ (PRFuncPtr*) &fRenderbufferStorage, { "RenderbufferStorage", "RenderbufferStorageEXT", NULL } },
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#if 0
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{ (PRFuncPtr*) &fMapBuffer, { "MapBuffer", NULL } },
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{ (PRFuncPtr*) &fUnmapBuffer, { "UnmapBuffer", NULL } },
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#endif
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{ NULL, { NULL } },
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};
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mInitialized = LoadSymbols(&symbols[0], trygl, prefix);
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return mInitialized;
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}
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PRBool
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GLContext::IsExtensionSupported(const char *extension)
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{
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const GLubyte *extensions = NULL;
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const GLubyte *start;
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GLubyte *where, *terminator;
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/* Extension names should not have spaces. */
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where = (GLubyte *) strchr(extension, ' ');
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if (where || *extension == '\0')
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return PR_FALSE;
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extensions = fGetString(LOCAL_GL_EXTENSIONS);
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/*
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* It takes a bit of care to be fool-proof about parsing the
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* OpenGL extensions string. Don't be fooled by sub-strings,
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* etc.
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*/
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start = extensions;
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for (;;) {
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where = (GLubyte *) strstr((const char *) start, extension);
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if (!where) {
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break;
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}
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terminator = where + strlen(extension);
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if (where == start || *(where - 1) == ' ') {
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if (*terminator == ' ' || *terminator == '\0') {
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return PR_TRUE;
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}
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}
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start = terminator;
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}
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return PR_FALSE;
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}
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} /* namespace gl */
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} /* namespace mozilla */
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