/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (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.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is * the Mozilla Foundation. * Portions created by the Initial Developer are Copyright (C) 2009 * the Initial Developer. All Rights Reserved. * * Contributor(s): * Vladimir Vukicevic * Mark Steele * Bas Schouten * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ #include #include #include "prlink.h" #include "prenv.h" #include "nsThreadUtils.h" #include "gfxPlatform.h" #include "GLContext.h" #include "GLContextProvider.h" #include "gfxCrashReporterUtils.h" #include "gfxUtils.h" #include "mozilla/Util.h" // for DebugOnly namespace mozilla { namespace gl { #ifdef DEBUG // see comment near declaration in GLContext.h. Should be thread-local. GLContext* GLContext::sCurrentGLContext = nsnull; #endif // define this here since it's global to GLContextProvider, not any // specific implementation const ContextFormat ContextFormat::BasicRGBA32Format(ContextFormat::BasicRGBA32); #define MAX_SYMBOL_LENGTH 128 #define MAX_SYMBOL_NAMES 5 PRBool LibrarySymbolLoader::OpenLibrary(const char *library) { PRLibSpec lspec; lspec.type = PR_LibSpec_Pathname; lspec.value.pathname = library; mLibrary = PR_LoadLibraryWithFlags(lspec, PR_LD_LAZY | PR_LD_LOCAL); if (!mLibrary) return PR_FALSE; return PR_TRUE; } PRBool LibrarySymbolLoader::LoadSymbols(SymLoadStruct *firstStruct, PRBool tryplatform, const char *prefix) { return LoadSymbols(mLibrary, firstStruct, tryplatform ? mLookupFunc : nsnull, prefix); } PRFuncPtr LibrarySymbolLoader::LookupSymbol(PRLibrary *lib, const char *sym, PlatformLookupFunction lookupFunction) { PRFuncPtr res = 0; // try finding it in the library directly, if we have one if (lib) { res = PR_FindFunctionSymbol(lib, sym); } // then try looking it up via the lookup symbol if (!res && lookupFunction) { res = lookupFunction(sym); } // finally just try finding it in the process if (!res) { PRLibrary *leakedLibRef; res = PR_FindFunctionSymbolAndLibrary(sym, &leakedLibRef); } return res; } PRBool LibrarySymbolLoader::LoadSymbols(PRLibrary *lib, SymLoadStruct *firstStruct, PlatformLookupFunction lookupFunction, const char *prefix) { char sbuf[MAX_SYMBOL_LENGTH * 2]; int failCount = 0; SymLoadStruct *ss = firstStruct; while (ss->symPointer) { *ss->symPointer = 0; for (int i = 0; i < MAX_SYMBOL_NAMES; i++) { if (ss->symNames[i] == nsnull) break; const char *s = ss->symNames[i]; if (prefix && *prefix != 0) { strcpy(sbuf, prefix); strcat(sbuf, ss->symNames[i]); s = sbuf; } PRFuncPtr p = LookupSymbol(lib, s, lookupFunction); if (p) { *ss->symPointer = p; break; } } if (*ss->symPointer == 0) { fprintf (stderr, "Can't find symbol '%s'\n", ss->symNames[0]); failCount++; } ss++; } return failCount == 0 ? PR_TRUE : PR_FALSE; } /* * XXX - we should really know the ARB/EXT variants of these * instead of only handling the symbol if it's exposed directly. */ PRBool GLContext::InitWithPrefix(const char *prefix, PRBool trygl) { ScopedGfxFeatureReporter reporter("GL Context"); if (mInitialized) { reporter.SetSuccessful(); return PR_TRUE; } SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fActiveTexture, { "ActiveTexture", "ActiveTextureARB", NULL } }, { (PRFuncPtr*) &mSymbols.fAttachShader, { "AttachShader", "AttachShaderARB", NULL } }, { (PRFuncPtr*) &mSymbols.fBindAttribLocation, { "BindAttribLocation", "BindAttribLocationARB", NULL } }, { (PRFuncPtr*) &mSymbols.fBindBuffer, { "BindBuffer", "BindBufferARB", NULL } }, { (PRFuncPtr*) &mSymbols.fBindTexture, { "BindTexture", "BindTextureARB", NULL } }, { (PRFuncPtr*) &mSymbols.fBlendColor, { "BlendColor", NULL } }, { (PRFuncPtr*) &mSymbols.fBlendEquation, { "BlendEquation", NULL } }, { (PRFuncPtr*) &mSymbols.fBlendEquationSeparate, { "BlendEquationSeparate", "BlendEquationSeparateEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fBlendFunc, { "BlendFunc", NULL } }, { (PRFuncPtr*) &mSymbols.fBlendFuncSeparate, { "BlendFuncSeparate", "BlendFuncSeparateEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fBufferData, { "BufferData", NULL } }, { (PRFuncPtr*) &mSymbols.fBufferSubData, { "BufferSubData", NULL } }, { (PRFuncPtr*) &mSymbols.fClear, { "Clear", NULL } }, { (PRFuncPtr*) &mSymbols.fClearColor, { "ClearColor", NULL } }, { (PRFuncPtr*) &mSymbols.fClearStencil, { "ClearStencil", NULL } }, { (PRFuncPtr*) &mSymbols.fColorMask, { "ColorMask", NULL } }, { (PRFuncPtr*) &mSymbols.fCullFace, { "CullFace", NULL } }, { (PRFuncPtr*) &mSymbols.fDetachShader, { "DetachShader", "DetachShaderARB", NULL } }, { (PRFuncPtr*) &mSymbols.fDepthFunc, { "DepthFunc", NULL } }, { (PRFuncPtr*) &mSymbols.fDepthMask, { "DepthMask", NULL } }, { (PRFuncPtr*) &mSymbols.fDisable, { "Disable", NULL } }, { (PRFuncPtr*) &mSymbols.fDisableVertexAttribArray, { "DisableVertexAttribArray", "DisableVertexAttribArrayARB", NULL } }, { (PRFuncPtr*) &mSymbols.fDrawArrays, { "DrawArrays", NULL } }, { (PRFuncPtr*) &mSymbols.fDrawElements, { "DrawElements", NULL } }, { (PRFuncPtr*) &mSymbols.fEnable, { "Enable", NULL } }, { (PRFuncPtr*) &mSymbols.fEnableVertexAttribArray, { "EnableVertexAttribArray", "EnableVertexAttribArrayARB", NULL } }, { (PRFuncPtr*) &mSymbols.fFinish, { "Finish", NULL } }, { (PRFuncPtr*) &mSymbols.fFlush, { "Flush", NULL } }, { (PRFuncPtr*) &mSymbols.fFrontFace, { "FrontFace", NULL } }, { (PRFuncPtr*) &mSymbols.fGetActiveAttrib, { "GetActiveAttrib", "GetActiveAttribARB", NULL } }, { (PRFuncPtr*) &mSymbols.fGetActiveUniform, { "GetActiveUniform", "GetActiveUniformARB", NULL } }, { (PRFuncPtr*) &mSymbols.fGetAttachedShaders, { "GetAttachedShaders", "GetAttachedShadersARB", NULL } }, { (PRFuncPtr*) &mSymbols.fGetAttribLocation, { "GetAttribLocation", "GetAttribLocationARB", NULL } }, { (PRFuncPtr*) &mSymbols.fGetIntegerv, { "GetIntegerv", NULL } }, { (PRFuncPtr*) &mSymbols.fGetFloatv, { "GetFloatv", NULL } }, { (PRFuncPtr*) &mSymbols.fGetBooleanv, { "GetBooleanv", NULL } }, { (PRFuncPtr*) &mSymbols.fGetBufferParameteriv, { "GetBufferParameteriv", "GetBufferParameterivARB", NULL } }, { (PRFuncPtr*) &mSymbols.fGetError, { "GetError", NULL } }, { (PRFuncPtr*) &mSymbols.fGetProgramiv, { "GetProgramiv", "GetProgramivARB", NULL } }, { (PRFuncPtr*) &mSymbols.fGetProgramInfoLog, { "GetProgramInfoLog", "GetProgramInfoLogARB", NULL } }, { (PRFuncPtr*) &mSymbols.fTexParameteri, { "TexParameteri", NULL } }, { (PRFuncPtr*) &mSymbols.fTexParameterf, { "TexParameterf", NULL } }, { (PRFuncPtr*) &mSymbols.fGetString, { "GetString", NULL } }, { (PRFuncPtr*) &mSymbols.fGetTexParameterfv, { "GetTexParameterfv", NULL } }, { (PRFuncPtr*) &mSymbols.fGetTexParameteriv, { "GetTexParameteriv", NULL } }, { (PRFuncPtr*) &mSymbols.fGetUniformfv, { "GetUniformfv", "GetUniformfvARB", NULL } }, { (PRFuncPtr*) &mSymbols.fGetUniformiv, { "GetUniformiv", "GetUniformivARB", NULL } }, { (PRFuncPtr*) &mSymbols.fGetUniformLocation, { "GetUniformLocation", "GetUniformLocationARB", NULL } }, { (PRFuncPtr*) &mSymbols.fGetVertexAttribfv, { "GetVertexAttribfv", "GetVertexAttribfvARB", NULL } }, { (PRFuncPtr*) &mSymbols.fGetVertexAttribiv, { "GetVertexAttribiv", "GetVertexAttribivARB", NULL } }, { (PRFuncPtr*) &mSymbols.fHint, { "Hint", NULL } }, { (PRFuncPtr*) &mSymbols.fIsBuffer, { "IsBuffer", "IsBufferARB", NULL } }, { (PRFuncPtr*) &mSymbols.fIsEnabled, { "IsEnabled", NULL } }, { (PRFuncPtr*) &mSymbols.fIsProgram, { "IsProgram", "IsProgramARB", NULL } }, { (PRFuncPtr*) &mSymbols.fIsShader, { "IsShader", "IsShaderARB", NULL } }, { (PRFuncPtr*) &mSymbols.fIsTexture, { "IsTexture", "IsTextureARB", NULL } }, { (PRFuncPtr*) &mSymbols.fLineWidth, { "LineWidth", NULL } }, { (PRFuncPtr*) &mSymbols.fLinkProgram, { "LinkProgram", "LinkProgramARB", NULL } }, { (PRFuncPtr*) &mSymbols.fPixelStorei, { "PixelStorei", NULL } }, { (PRFuncPtr*) &mSymbols.fPolygonOffset, { "PolygonOffset", NULL } }, { (PRFuncPtr*) &mSymbols.fReadPixels, { "ReadPixels", NULL } }, { (PRFuncPtr*) &mSymbols.fSampleCoverage, { "SampleCoverage", NULL } }, { (PRFuncPtr*) &mSymbols.fScissor, { "Scissor", NULL } }, { (PRFuncPtr*) &mSymbols.fStencilFunc, { "StencilFunc", NULL } }, { (PRFuncPtr*) &mSymbols.fStencilFuncSeparate, { "StencilFuncSeparate", "StencilFuncSeparateEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fStencilMask, { "StencilMask", NULL } }, { (PRFuncPtr*) &mSymbols.fStencilMaskSeparate, { "StencilMaskSeparate", "StencilMaskSeparateEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fStencilOp, { "StencilOp", NULL } }, { (PRFuncPtr*) &mSymbols.fStencilOpSeparate, { "StencilOpSeparate", "StencilOpSeparateEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fTexImage2D, { "TexImage2D", NULL } }, { (PRFuncPtr*) &mSymbols.fTexSubImage2D, { "TexSubImage2D", NULL } }, { (PRFuncPtr*) &mSymbols.fUniform1f, { "Uniform1f", NULL } }, { (PRFuncPtr*) &mSymbols.fUniform1fv, { "Uniform1fv", NULL } }, { (PRFuncPtr*) &mSymbols.fUniform1i, { "Uniform1i", NULL } }, { (PRFuncPtr*) &mSymbols.fUniform1iv, { "Uniform1iv", NULL } }, { (PRFuncPtr*) &mSymbols.fUniform2f, { "Uniform2f", NULL } }, { (PRFuncPtr*) &mSymbols.fUniform2fv, { "Uniform2fv", NULL } }, { (PRFuncPtr*) &mSymbols.fUniform2i, { "Uniform2i", NULL } }, { (PRFuncPtr*) &mSymbols.fUniform2iv, { "Uniform2iv", NULL } }, { (PRFuncPtr*) &mSymbols.fUniform3f, { "Uniform3f", NULL } }, { (PRFuncPtr*) &mSymbols.fUniform3fv, { "Uniform3fv", NULL } }, { (PRFuncPtr*) &mSymbols.fUniform3i, { "Uniform3i", NULL } }, { (PRFuncPtr*) &mSymbols.fUniform3iv, { "Uniform3iv", NULL } }, { (PRFuncPtr*) &mSymbols.fUniform4f, { "Uniform4f", NULL } }, { (PRFuncPtr*) &mSymbols.fUniform4fv, { "Uniform4fv", NULL } }, { (PRFuncPtr*) &mSymbols.fUniform4i, { "Uniform4i", NULL } }, { (PRFuncPtr*) &mSymbols.fUniform4iv, { "Uniform4iv", NULL } }, { (PRFuncPtr*) &mSymbols.fUniformMatrix2fv, { "UniformMatrix2fv", NULL } }, { (PRFuncPtr*) &mSymbols.fUniformMatrix3fv, { "UniformMatrix3fv", NULL } }, { (PRFuncPtr*) &mSymbols.fUniformMatrix4fv, { "UniformMatrix4fv", NULL } }, { (PRFuncPtr*) &mSymbols.fUseProgram, { "UseProgram", NULL } }, { (PRFuncPtr*) &mSymbols.fValidateProgram, { "ValidateProgram", NULL } }, { (PRFuncPtr*) &mSymbols.fVertexAttribPointer, { "VertexAttribPointer", NULL } }, { (PRFuncPtr*) &mSymbols.fVertexAttrib1f, { "VertexAttrib1f", NULL } }, { (PRFuncPtr*) &mSymbols.fVertexAttrib2f, { "VertexAttrib2f", NULL } }, { (PRFuncPtr*) &mSymbols.fVertexAttrib3f, { "VertexAttrib3f", NULL } }, { (PRFuncPtr*) &mSymbols.fVertexAttrib4f, { "VertexAttrib4f", NULL } }, { (PRFuncPtr*) &mSymbols.fVertexAttrib1fv, { "VertexAttrib1fv", NULL } }, { (PRFuncPtr*) &mSymbols.fVertexAttrib2fv, { "VertexAttrib2fv", NULL } }, { (PRFuncPtr*) &mSymbols.fVertexAttrib3fv, { "VertexAttrib3fv", NULL } }, { (PRFuncPtr*) &mSymbols.fVertexAttrib4fv, { "VertexAttrib4fv", NULL } }, { (PRFuncPtr*) &mSymbols.fViewport, { "Viewport", NULL } }, { (PRFuncPtr*) &mSymbols.fCompileShader, { "CompileShader", NULL } }, { (PRFuncPtr*) &mSymbols.fCopyTexImage2D, { "CopyTexImage2D", NULL } }, { (PRFuncPtr*) &mSymbols.fCopyTexSubImage2D, { "CopyTexSubImage2D", NULL } }, { (PRFuncPtr*) &mSymbols.fGetShaderiv, { "GetShaderiv", NULL } }, { (PRFuncPtr*) &mSymbols.fGetShaderInfoLog, { "GetShaderInfoLog", NULL } }, { (PRFuncPtr*) &mSymbols.fGetShaderSource, { "GetShaderSource", NULL } }, { (PRFuncPtr*) &mSymbols.fShaderSource, { "ShaderSource", NULL } }, { (PRFuncPtr*) &mSymbols.fVertexAttribPointer, { "VertexAttribPointer", NULL } }, { (PRFuncPtr*) &mSymbols.fBindFramebuffer, { "BindFramebuffer", "BindFramebufferEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fBindRenderbuffer, { "BindRenderbuffer", "BindRenderbufferEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fCheckFramebufferStatus, { "CheckFramebufferStatus", "CheckFramebufferStatusEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fFramebufferRenderbuffer, { "FramebufferRenderbuffer", "FramebufferRenderbufferEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fFramebufferTexture2D, { "FramebufferTexture2D", "FramebufferTexture2DEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fGenerateMipmap, { "GenerateMipmap", "GenerateMipmapEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fGetFramebufferAttachmentParameteriv, { "GetFramebufferAttachmentParameteriv", "GetFramebufferAttachmentParameterivEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fGetRenderbufferParameteriv, { "GetRenderbufferParameteriv", "GetRenderbufferParameterivEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fIsFramebuffer, { "IsFramebuffer", "IsFramebufferEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fIsRenderbuffer, { "IsRenderbuffer", "IsRenderbufferEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fRenderbufferStorage, { "RenderbufferStorage", "RenderbufferStorageEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fGenBuffers, { "GenBuffers", "GenBuffersARB", NULL } }, { (PRFuncPtr*) &mSymbols.fGenTextures, { "GenTextures", NULL } }, { (PRFuncPtr*) &mSymbols.fCreateProgram, { "CreateProgram", "CreateProgramARB", NULL } }, { (PRFuncPtr*) &mSymbols.fCreateShader, { "CreateShader", "CreateShaderARB", NULL } }, { (PRFuncPtr*) &mSymbols.fGenFramebuffers, { "GenFramebuffers", "GenFramebuffersEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fGenRenderbuffers, { "GenRenderbuffers", "GenRenderbuffersEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fDeleteBuffers, { "DeleteBuffers", "DeleteBuffersARB", NULL } }, { (PRFuncPtr*) &mSymbols.fDeleteTextures, { "DeleteTextures", "DeleteTexturesARB", NULL } }, { (PRFuncPtr*) &mSymbols.fDeleteProgram, { "DeleteProgram", "DeleteProgramARB", NULL } }, { (PRFuncPtr*) &mSymbols.fDeleteShader, { "DeleteShader", "DeleteShaderARB", NULL } }, { (PRFuncPtr*) &mSymbols.fDeleteFramebuffers, { "DeleteFramebuffers", "DeleteFramebuffersEXT", NULL } }, { (PRFuncPtr*) &mSymbols.fDeleteRenderbuffers, { "DeleteRenderbuffers", "DeleteRenderbuffersEXT", NULL } }, { mIsGLES2 ? (PRFuncPtr*) &mSymbols.fClearDepthf : (PRFuncPtr*) &mSymbols.fClearDepth, { mIsGLES2 ? "ClearDepthf" : "ClearDepth", NULL } }, { mIsGLES2 ? (PRFuncPtr*) &mSymbols.fDepthRangef : (PRFuncPtr*) &mSymbols.fDepthRange, { mIsGLES2 ? "DepthRangef" : "DepthRange", NULL } }, // XXX FIXME -- we shouldn't be using glReadBuffer! { mIsGLES2 ? (PRFuncPtr*) NULL : (PRFuncPtr*) &mSymbols.fReadBuffer, { mIsGLES2 ? NULL : "ReadBuffer", NULL } }, { mIsGLES2 ? (PRFuncPtr*) NULL : (PRFuncPtr*) &mSymbols.fMapBuffer, { mIsGLES2 ? NULL : "MapBuffer", NULL } }, { mIsGLES2 ? (PRFuncPtr*) NULL : (PRFuncPtr*) &mSymbols.fUnmapBuffer, { mIsGLES2 ? NULL : "UnmapBuffer", NULL } }, { NULL, { NULL } }, }; mInitialized = LoadSymbols(&symbols[0], trygl, prefix); const char *glVendorString; if (mInitialized) { glVendorString = (const char *)fGetString(LOCAL_GL_VENDOR); const char *vendorMatchStrings[VendorOther] = { "Intel", "NVIDIA", "ATI", "Qualcomm" }; mVendor = VendorOther; for (int i = 0; i < VendorOther; ++i) { if (DoesVendorStringMatch(glVendorString, vendorMatchStrings[i])) { mVendor = i; break; } } } if (mInitialized) { #ifdef DEBUG static bool once = false; if (!once) { const char *vendors[VendorOther] = { "Intel", "NVIDIA", "ATI", "Qualcomm" }; once = true; if (mVendor < VendorOther) { printf_stderr("OpenGL vendor ('%s') recognized as: %s\n", glVendorString, vendors[mVendor]); } else { printf_stderr("OpenGL vendor ('%s') unrecognized\n", glVendorString); } } #endif InitExtensions(); NS_ASSERTION(!IsExtensionSupported(GLContext::ARB_pixel_buffer_object) || (mSymbols.fMapBuffer && mSymbols.fUnmapBuffer), "ARB_pixel_buffer_object supported without glMapBuffer/UnmapBuffer being available!"); GLint v[4]; fGetIntegerv(LOCAL_GL_SCISSOR_BOX, v); mScissorStack.AppendElement(nsIntRect(v[0], v[1], v[2], v[3])); fGetIntegerv(LOCAL_GL_VIEWPORT, v); mViewportStack.AppendElement(nsIntRect(v[0], v[1], v[2], v[3])); fGetIntegerv(LOCAL_GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); fGetIntegerv(LOCAL_GL_MAX_RENDERBUFFER_SIZE, &mMaxRenderbufferSize); UpdateActualFormat(); } #ifdef DEBUG if (PR_GetEnv("MOZ_GL_DEBUG")) mDebugMode |= DebugEnabled; // enables extra verbose output, informing of the start and finish of every GL call. // useful e.g. to record information to investigate graphics system crashes/lockups if (PR_GetEnv("MOZ_GL_DEBUG_VERBOSE")) mDebugMode |= DebugTrace; // aborts on GL error. Can be useful to debug quicker code that is known not to generate any GL error in principle. if (PR_GetEnv("MOZ_GL_DEBUG_ABORT_ON_ERROR")) mDebugMode |= DebugAbortOnError; #endif if (mInitialized) reporter.SetSuccessful(); else { // if initialization fails, ensure all symbols are zero, to avoid hard-to-understand bugs mSymbols.Zero(); } return mInitialized; } // should match the order of GLExtensions static const char *sExtensionNames[] = { "GL_EXT_framebuffer_object", "GL_ARB_framebuffer_object", "GL_ARB_texture_rectangle", "GL_EXT_bgra", "GL_EXT_texture_format_BGRA8888", "GL_OES_depth24", "GL_OES_depth32", "GL_OES_stencil8", "GL_OES_texture_npot", "GL_OES_depth_texture", "GL_OES_packed_depth_stencil", "GL_IMG_read_format", "GL_EXT_read_format_bgra", "GL_APPLE_client_storage", "GL_ARB_texture_non_power_of_two", "GL_ARB_pixel_buffer_object", "GL_ARB_ES2_compatibility", NULL }; void GLContext::InitExtensions() { MakeCurrent(); const GLubyte *extensions = fGetString(LOCAL_GL_EXTENSIONS); char *exts = strdup((char *)extensions); #ifdef DEBUG static bool once = false; #else const bool once = true; #endif if (!once) { printf_stderr("GL extensions: %s\n", exts); } char *s = exts; bool done = false; while (!done) { char *space = strchr(s, ' '); if (space) { *space = '\0'; } else { done = true; } for (int i = 0; sExtensionNames[i]; ++i) { if (strcmp(s, sExtensionNames[i]) == 0) { if (!once) { printf_stderr("Found extension %s\n", s); } mAvailableExtensions[i] = 1; } } s = space+1; } free(exts); #ifdef DEBUG once = true; #endif } PRBool GLContext::IsExtensionSupported(const char *extension) { return ListHasExtension(fGetString(LOCAL_GL_EXTENSIONS), extension); } // Common code for checking for both GL extensions and GLX extensions. PRBool GLContext::ListHasExtension(const GLubyte *extensions, const char *extension) { // fix bug 612572 - we were crashing as we were calling this function with extensions==null if (extensions == nsnull || extension == nsnull) return PR_FALSE; const GLubyte *start; GLubyte *where, *terminator; /* Extension names should not have spaces. */ where = (GLubyte *) strchr(extension, ' '); if (where || *extension == '\0') return PR_FALSE; /* * It takes a bit of care to be fool-proof about parsing the * OpenGL extensions string. Don't be fooled by sub-strings, * etc. */ start = extensions; for (;;) { where = (GLubyte *) strstr((const char *) start, extension); if (!where) { break; } terminator = where + strlen(extension); if (where == start || *(where - 1) == ' ') { if (*terminator == ' ' || *terminator == '\0') { return PR_TRUE; } } start = terminator; } return PR_FALSE; } already_AddRefed GLContext::CreateTextureImage(const nsIntSize& aSize, TextureImage::ContentType aContentType, GLenum aWrapMode, PRBool aUseNearestFilter) { MakeCurrent(); GLuint texture; fGenTextures(1, &texture); fActiveTexture(LOCAL_GL_TEXTURE0); fBindTexture(LOCAL_GL_TEXTURE_2D, texture); GLint texfilter = aUseNearestFilter ? LOCAL_GL_NEAREST : LOCAL_GL_LINEAR; fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER, texfilter); fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER, texfilter); fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_S, aWrapMode); fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T, aWrapMode); return CreateBasicTextureImage(texture, aSize, aWrapMode, aContentType, this); } BasicTextureImage::~BasicTextureImage() { GLContext *ctx = mGLContext; if (ctx->IsDestroyed() || !NS_IsMainThread()) { ctx = ctx->GetSharedContext(); } // If we have a context, then we need to delete the texture; // if we don't have a context (either real or shared), // then they went away when the contex was deleted, because it // was the only one that had access to it. if (ctx && !ctx->IsDestroyed()) { mGLContext->MakeCurrent(); mGLContext->fDeleteTextures(1, &mTexture); } } gfxASurface* BasicTextureImage::BeginUpdate(nsIntRegion& aRegion) { NS_ASSERTION(!mUpdateSurface, "BeginUpdate() without EndUpdate()?"); // determine the region the client will need to repaint ImageFormat format = (GetContentType() == gfxASurface::CONTENT_COLOR) ? gfxASurface::ImageFormatRGB24 : gfxASurface::ImageFormatARGB32; if (mTextureState != Valid) { // if the texture hasn't been initialized yet, or something important // changed, we need to recreate our backing surface and force the // client to paint everything mUpdateRegion = nsIntRect(nsIntPoint(0, 0), mSize); } else { mUpdateRegion = aRegion; } aRegion = mUpdateRegion; nsIntRect rgnSize = mUpdateRegion.GetBounds(); if (!nsIntRect(nsIntPoint(0, 0), mSize).Contains(rgnSize)) { NS_ERROR("update outside of image"); return NULL; } mUpdateSurface = GetSurfaceForUpdate(gfxIntSize(rgnSize.width, rgnSize.height), format); if (!mUpdateSurface || mUpdateSurface->CairoStatus()) { mUpdateSurface = NULL; return NULL; } mUpdateSurface->SetDeviceOffset(gfxPoint(-rgnSize.x, -rgnSize.y)); return mUpdateSurface; } void BasicTextureImage::EndUpdate() { NS_ASSERTION(!!mUpdateSurface, "EndUpdate() without BeginUpdate()?"); // FIXME: this is the slow boat. Make me fast (with GLXPixmap?). // Undo the device offset that BeginUpdate set; doesn't much matter for us here, // but important if we ever do anything directly with the surface. mUpdateSurface->SetDeviceOffset(gfxPoint(0, 0)); bool relative = FinishedSurfaceUpdate(); mShaderType = mGLContext->UploadSurfaceToTexture(mUpdateSurface, mUpdateRegion, mTexture, mTextureState == Created, mUpdateOffset, relative); FinishedSurfaceUpload(); mUpdateSurface = nsnull; mTextureState = Valid; } void BasicTextureImage::BindTexture(GLenum aTextureUnit) { mGLContext->fActiveTexture(aTextureUnit); mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture); mGLContext->fActiveTexture(LOCAL_GL_TEXTURE0); } already_AddRefed BasicTextureImage::GetSurfaceForUpdate(const gfxIntSize& aSize, ImageFormat aFmt) { return gfxPlatform::GetPlatform()-> CreateOffscreenSurface(aSize, gfxASurface::ContentFromFormat(aFmt)); } bool BasicTextureImage::FinishedSurfaceUpdate() { return false; } void BasicTextureImage::FinishedSurfaceUpload() { } bool BasicTextureImage::DirectUpdate(gfxASurface* aSurf, const nsIntRegion& aRegion, const nsIntPoint& aFrom /* = nsIntPoint(0, 0) */) { nsIntRect bounds = aRegion.GetBounds(); nsIntRegion region; if (mTextureState != Valid) { bounds = nsIntRect(0, 0, mSize.width, mSize.height); region = nsIntRegion(bounds); } else { region = aRegion; } mShaderType = mGLContext->UploadSurfaceToTexture(aSurf, region, mTexture, mTextureState == Created, bounds.TopLeft() + aFrom, PR_FALSE); mTextureState = Valid; return true; } void BasicTextureImage::Resize(const nsIntSize& aSize) { NS_ASSERTION(!mUpdateSurface, "Resize() while in update?"); mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture); mGLContext->fTexImage2D(LOCAL_GL_TEXTURE_2D, 0, LOCAL_GL_RGBA, aSize.width, aSize.height, 0, LOCAL_GL_RGBA, LOCAL_GL_UNSIGNED_BYTE, NULL); mTextureState = Allocated; mSize = aSize; } TiledTextureImage::TiledTextureImage(GLContext* aGL, nsIntSize aSize, TextureImage::ContentType aContentType, PRBool aUseNearestFilter) : TextureImage(aSize, LOCAL_GL_CLAMP_TO_EDGE, aContentType, aUseNearestFilter) , mCurrentImage(0) , mInUpdate(PR_FALSE) , mGL(aGL) , mUseNearestFilter(aUseNearestFilter) , mTextureState(Created) { mTileSize = mGL->GetMaxTextureSize(); if (aSize != nsIntSize(0,0)) { Resize(aSize); } } TiledTextureImage::~TiledTextureImage() { } bool TiledTextureImage::DirectUpdate(gfxASurface* aSurf, const nsIntRegion& aRegion, const nsIntPoint& aFrom /* = nsIntPoint(0, 0) */) { nsIntRect bounds = aRegion.GetBounds(); nsIntRegion region; if (mTextureState != Valid) { bounds = nsIntRect(0, 0, mSize.width, mSize.height); region = nsIntRegion(bounds); } else { region = aRegion; } PRBool result = PR_TRUE; for (unsigned i = 0; i < mImages.Length(); i++) { unsigned int xPos = (i % mColumns) * mTileSize; unsigned int yPos = (i / mColumns) * mTileSize; nsIntRegion tileRegion; tileRegion.And(region, nsIntRect(nsIntPoint(xPos,yPos), mImages[i]->GetSize())); // intersect with tile if (tileRegion.IsEmpty()) continue; tileRegion.MoveBy(-xPos, -yPos); // translate into tile local space result &= mImages[i]->DirectUpdate(aSurf, tileRegion, aFrom + nsIntPoint(xPos, yPos)); } mShaderType = mImages[0]->GetShaderProgramType(); mIsRGBFormat = mImages[0]->IsRGB(); mTextureState = Valid; return result; } gfxASurface* TiledTextureImage::BeginUpdate(nsIntRegion& aRegion) { NS_ASSERTION(!mInUpdate, "nested update"); mInUpdate = PR_TRUE; if (mTextureState != Valid) { // if the texture hasn't been initialized yet, or something important // changed, we need to recreate our backing surface and force the // client to paint everything mUpdateRegion = nsIntRect(nsIntPoint(0, 0), mSize); } else { mUpdateRegion = aRegion; } for (unsigned i = 0; i < mImages.Length(); i++) { unsigned int xPos = (i % mColumns) * mTileSize; unsigned int yPos = (i / mColumns) * mTileSize; nsIntRegion imageRegion = nsIntRegion(nsIntRect(nsIntPoint(xPos,yPos), mImages[i]->GetSize())); // a single Image can handle this update request if (imageRegion.Contains(aRegion)) { // adjust for tile offset aRegion.MoveBy(-xPos, -yPos); // forward the actual call nsRefPtr surface = mImages[i]->BeginUpdate(aRegion); // caller expects container space aRegion.MoveBy(xPos, yPos); // we don't have a temp surface mUpdateSurface = nsnull; // remember which image to EndUpdate mCurrentImage = i; return surface.get(); } } // update covers multiple Images - create a temp surface to paint in gfxASurface::gfxImageFormat format = (GetContentType() == gfxASurface::CONTENT_COLOR) ? gfxASurface::ImageFormatRGB24 : gfxASurface::ImageFormatARGB32; nsIntRect bounds = aRegion.GetBounds(); mUpdateSurface = gfxPlatform::GetPlatform()-> CreateOffscreenSurface(gfxIntSize(bounds.width, bounds.height), gfxASurface::ContentFromFormat(format)); mUpdateSurface->SetDeviceOffset(gfxPoint(-bounds.x, -bounds.y)); return mUpdateSurface; } void TiledTextureImage::EndUpdate() { NS_ASSERTION(mInUpdate, "EndUpdate not in update"); if (!mUpdateSurface) { // update was to a single TextureImage mImages[mCurrentImage]->EndUpdate(); mInUpdate = PR_FALSE; mTextureState = Valid; mShaderType = mImages[mCurrentImage]->GetShaderProgramType(); mIsRGBFormat = mImages[mCurrentImage]->IsRGB(); return; } // upload tiles from temp surface for (unsigned i = 0; i < mImages.Length(); i++) { unsigned int xPos = (i % mColumns) * mTileSize; unsigned int yPos = (i / mColumns) * mTileSize; nsIntRect imageRect = nsIntRect(nsIntPoint(xPos,yPos), mImages[i]->GetSize()); nsIntRegion subregion; subregion.And(mUpdateRegion, imageRect); if (subregion.IsEmpty()) continue; subregion.MoveBy(-xPos, -yPos); // Tile-local space // copy tile from temp surface gfxASurface* surf = mImages[i]->BeginUpdate(subregion); nsRefPtr ctx = new gfxContext(surf); gfxUtils::ClipToRegion(ctx, subregion); ctx->SetOperator(gfxContext::OPERATOR_SOURCE); ctx->SetSource(mUpdateSurface, gfxPoint(-xPos, -yPos)); ctx->Paint(); mImages[i]->EndUpdate(); } mUpdateSurface = nsnull; mInUpdate = PR_FALSE; mShaderType = mImages[0]->GetShaderProgramType(); mIsRGBFormat = mImages[0]->IsRGB(); } void TiledTextureImage::BeginTileIteration() { mCurrentImage = 0; } PRBool TiledTextureImage::NextTile() { if (mCurrentImage + 1 < mImages.Length()) { mCurrentImage++; return PR_TRUE; } return PR_FALSE; } nsIntRect TiledTextureImage::GetTileRect() { nsIntRect rect = mImages[mCurrentImage]->GetTileRect(); unsigned int xPos = (mCurrentImage % mColumns) * mTileSize; unsigned int yPos = (mCurrentImage / mColumns) * mTileSize; rect.MoveTo(xPos, yPos); return rect; } void TiledTextureImage::BindTexture(GLenum aTextureUnit) { mImages[mCurrentImage]->BindTexture(aTextureUnit); } /* * simple resize, just discards everything. we can be more clever just * adding or discarding tiles, but do we want this? */ void TiledTextureImage::Resize(const nsIntSize& aSize) { if (mSize == aSize && mTextureState != Created) { return; } mSize = aSize; mImages.Clear(); // calculate rows and columns, rounding up mColumns = (aSize.width + mTileSize - 1) / mTileSize; mRows = (aSize.height + mTileSize - 1) / mTileSize; for (unsigned int row = 0; row < mRows; row++) { for (unsigned int col = 0; col < mColumns; col++) { nsIntSize size( // use tilesize first, then the remainder (col+1) * mTileSize > (unsigned int)aSize.width ? aSize.width % mTileSize : mTileSize, (row+1) * mTileSize > (unsigned int)aSize.height ? aSize.height % mTileSize : mTileSize); nsRefPtr teximg = mGL->TileGenFunc(size, mContentType, mUseNearestFilter); mImages.AppendElement(teximg.forget()); } } mTextureState = Allocated; } PRBool GLContext::ResizeOffscreenFBO(const gfxIntSize& aSize) { if (!IsOffscreenSizeAllowed(aSize)) return PR_FALSE; MakeCurrent(); bool alpha = mCreationFormat.alpha > 0; int depth = mCreationFormat.depth; int stencil = mCreationFormat.stencil; bool firstTime = (mOffscreenFBO == 0); GLuint curBoundTexture = 0; GLuint curBoundRenderbuffer = 0; GLuint curBoundFramebuffer = 0; GLint viewport[4]; bool useDepthStencil = !mIsGLES2 || IsExtensionSupported(OES_packed_depth_stencil); // save a few things for later restoring fGetIntegerv(LOCAL_GL_TEXTURE_BINDING_2D, (GLint*) &curBoundTexture); fGetIntegerv(LOCAL_GL_FRAMEBUFFER_BINDING, (GLint*) &curBoundFramebuffer); fGetIntegerv(LOCAL_GL_RENDERBUFFER_BINDING, (GLint*) &curBoundRenderbuffer); fGetIntegerv(LOCAL_GL_VIEWPORT, viewport); // the context format of what we're defining; // for some reason, UpdateActualFormat isn't working with a bound FBO. ContextFormat cf; // If this is the first time we're going through this, we need // to create the objects we'll use. Otherwise, just bind them. if (firstTime) { fGenTextures(1, &mOffscreenTexture); fBindTexture(LOCAL_GL_TEXTURE_2D, mOffscreenTexture); fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_LINEAR); fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_LINEAR); fGenFramebuffers(1, &mOffscreenFBO); fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, mOffscreenFBO); if (depth && stencil && useDepthStencil) { fGenRenderbuffers(1, &mOffscreenDepthRB); } else { if (depth) { fGenRenderbuffers(1, &mOffscreenDepthRB); } if (stencil) { fGenRenderbuffers(1, &mOffscreenStencilRB); } } } else { fBindTexture(LOCAL_GL_TEXTURE_2D, mOffscreenTexture); fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, mOffscreenFBO); } // resize the FBO components if (alpha) { fTexImage2D(LOCAL_GL_TEXTURE_2D, 0, LOCAL_GL_RGBA, aSize.width, aSize.height, 0, LOCAL_GL_RGBA, LOCAL_GL_UNSIGNED_BYTE, NULL); cf.red = cf.green = cf.blue = cf.alpha = 8; } else { fTexImage2D(LOCAL_GL_TEXTURE_2D, 0, LOCAL_GL_RGB, aSize.width, aSize.height, 0, LOCAL_GL_RGB, #ifdef XP_WIN LOCAL_GL_UNSIGNED_BYTE, #else mIsGLES2 ? LOCAL_GL_UNSIGNED_SHORT_5_6_5 : LOCAL_GL_UNSIGNED_BYTE, #endif NULL); #ifdef XP_WIN cf.red = cf.green = cf.blue = 8; #else cf.red = 5; cf.green = 6; cf.blue = 5; #endif cf.alpha = 0; } if (depth && stencil && useDepthStencil) { fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, mOffscreenDepthRB); fRenderbufferStorage(LOCAL_GL_RENDERBUFFER, LOCAL_GL_DEPTH24_STENCIL8, aSize.width, aSize.height); cf.depth = 24; cf.stencil = 8; } else { if (depth) { GLenum depthType; if (mIsGLES2) { if (IsExtensionSupported(OES_depth32)) { depthType = LOCAL_GL_DEPTH_COMPONENT32; } else if (IsExtensionSupported(OES_depth24)) { depthType = LOCAL_GL_DEPTH_COMPONENT24; } else { depthType = LOCAL_GL_DEPTH_COMPONENT16; } } else { depthType = LOCAL_GL_DEPTH_COMPONENT24; } fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, mOffscreenDepthRB); fRenderbufferStorage(LOCAL_GL_RENDERBUFFER, mIsGLES2 ? LOCAL_GL_DEPTH_COMPONENT16 : LOCAL_GL_DEPTH_COMPONENT24, aSize.width, aSize.height); cf.depth = mIsGLES2 ? 16 : 24; } if (stencil) { fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, mOffscreenStencilRB); fRenderbufferStorage(LOCAL_GL_RENDERBUFFER, LOCAL_GL_STENCIL_INDEX8, aSize.width, aSize.height); cf.stencil = 8; } } // Now assemble the FBO, if we're creating one // for the first time. if (firstTime) { fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0, LOCAL_GL_TEXTURE_2D, mOffscreenTexture, 0); if (depth && stencil && useDepthStencil) { fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_DEPTH_ATTACHMENT, LOCAL_GL_RENDERBUFFER, mOffscreenDepthRB); fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_STENCIL_ATTACHMENT, LOCAL_GL_RENDERBUFFER, mOffscreenDepthRB); } else { if (depth) { fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_DEPTH_ATTACHMENT, LOCAL_GL_RENDERBUFFER, mOffscreenDepthRB); } if (stencil) { fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_STENCIL_ATTACHMENT, LOCAL_GL_RENDERBUFFER, mOffscreenStencilRB); } } } // We should be all resized. Check for framebuffer completeness. GLenum status = fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER); if (status != LOCAL_GL_FRAMEBUFFER_COMPLETE) { NS_WARNING("Error resizing offscreen framebuffer -- framebuffer not complete"); return PR_FALSE; } mOffscreenSize = aSize; mOffscreenActualSize = aSize; if (firstTime) { // UpdateActualFormat() doesn't work for some reason, with a // FBO bound, even though it should. //UpdateActualFormat(); mActualFormat = cf; #ifdef DEBUG printf_stderr("Created offscreen FBO: r: %d g: %d b: %d a: %d depth: %d stencil: %d\n", mActualFormat.red, mActualFormat.green, mActualFormat.blue, mActualFormat.alpha, mActualFormat.depth, mActualFormat.stencil); #endif } // We're good, and the framebuffer is already attached, so let's // clear out our new framebuffer; otherwise we'll end up displaying // random memory. We saved all of these things earlier so that we // can restore them. fViewport(0, 0, aSize.width, aSize.height); // Clear the new framebuffer with the full viewport ClearSafely(); // Ok, now restore the GL state back to what it was before the resize took place. fBindTexture(LOCAL_GL_TEXTURE_2D, curBoundTexture); fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, curBoundRenderbuffer); fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, curBoundFramebuffer); // -don't- restore the viewport the first time through this, since // the previous one isn't valid. if (!firstTime) fViewport(viewport[0], viewport[1], viewport[2], viewport[3]); return PR_TRUE; } void GLContext::DeleteOffscreenFBO() { fDeleteFramebuffers(1, &mOffscreenFBO); fDeleteTextures(1, &mOffscreenTexture); fDeleteRenderbuffers(1, &mOffscreenDepthRB); fDeleteRenderbuffers(1, &mOffscreenStencilRB); mOffscreenFBO = 0; mOffscreenTexture = 0; mOffscreenDepthRB = 0; mOffscreenStencilRB = 0; } void GLContext::ClearSafely() { // bug 659349 --- we must be very careful here: clearing a GL framebuffer is nontrivial, relies on a lot of state, // and in the case of the backbuffer of a WebGL context, state is exposed to scripts. // // The code here is taken from WebGLContext::ForceClearFramebufferWithDefaultValues, but I didn't find a good way of // sharing code with it. WebGL's code is somewhat performance-critical as it is typically called on every frame, so // WebGL keeps track of GL state to avoid having to query it everytime, and also tries to only do work for actually // present buffers (e.g. stencil buffer). Doing that here seems like premature optimization, // as ClearSafely() is called only when e.g. a canvas is resized, not on every animation frame. realGLboolean scissorTestEnabled; realGLboolean ditherEnabled; realGLboolean colorWriteMask[4]; realGLboolean depthWriteMask; GLint stencilWriteMaskFront, stencilWriteMaskBack; GLfloat colorClearValue[4]; GLfloat depthClearValue; GLint stencilClearValue; // save current GL state fGetBooleanv(LOCAL_GL_SCISSOR_TEST, &scissorTestEnabled); fGetBooleanv(LOCAL_GL_DITHER, &ditherEnabled); fGetBooleanv(LOCAL_GL_COLOR_WRITEMASK, colorWriteMask); fGetBooleanv(LOCAL_GL_DEPTH_WRITEMASK, &depthWriteMask); fGetIntegerv(LOCAL_GL_STENCIL_WRITEMASK, &stencilWriteMaskFront); fGetIntegerv(LOCAL_GL_STENCIL_BACK_WRITEMASK, &stencilWriteMaskBack); fGetFloatv(LOCAL_GL_COLOR_CLEAR_VALUE, colorClearValue); fGetFloatv(LOCAL_GL_DEPTH_CLEAR_VALUE, &depthClearValue); fGetIntegerv(LOCAL_GL_STENCIL_CLEAR_VALUE, &stencilClearValue); // prepare GL state for clearing fDisable(LOCAL_GL_SCISSOR_TEST); fDisable(LOCAL_GL_DITHER); PushViewportRect(nsIntRect(0, 0, mOffscreenSize.width, mOffscreenSize.height)); fColorMask(1, 1, 1, 1); fClearColor(0.f, 0.f, 0.f, 0.f); fDepthMask(1); fClearDepth(1.0f); fStencilMask(0xffffffff); fClearStencil(0); // do clear fClear(LOCAL_GL_COLOR_BUFFER_BIT | LOCAL_GL_DEPTH_BUFFER_BIT | LOCAL_GL_STENCIL_BUFFER_BIT); // restore GL state after clearing fColorMask(colorWriteMask[0], colorWriteMask[1], colorWriteMask[2], colorWriteMask[3]); fClearColor(colorClearValue[0], colorClearValue[1], colorClearValue[2], colorClearValue[3]); fDepthMask(depthWriteMask); fClearDepth(depthClearValue); fStencilMaskSeparate(LOCAL_GL_FRONT, stencilWriteMaskFront); fStencilMaskSeparate(LOCAL_GL_BACK, stencilWriteMaskBack); fClearStencil(stencilClearValue); PopViewportRect(); if (ditherEnabled) fEnable(LOCAL_GL_DITHER); else fDisable(LOCAL_GL_DITHER); if (scissorTestEnabled) fEnable(LOCAL_GL_SCISSOR_TEST); else fDisable(LOCAL_GL_SCISSOR_TEST); } void GLContext::UpdateActualFormat() { ContextFormat nf; fGetIntegerv(LOCAL_GL_RED_BITS, (GLint*) &nf.red); fGetIntegerv(LOCAL_GL_GREEN_BITS, (GLint*) &nf.green); fGetIntegerv(LOCAL_GL_BLUE_BITS, (GLint*) &nf.blue); fGetIntegerv(LOCAL_GL_ALPHA_BITS, (GLint*) &nf.alpha); fGetIntegerv(LOCAL_GL_DEPTH_BITS, (GLint*) &nf.depth); fGetIntegerv(LOCAL_GL_STENCIL_BITS, (GLint*) &nf.stencil); mActualFormat = nf; } void GLContext::MarkDestroyed() { if (IsDestroyed()) return; MakeCurrent(); DeleteOffscreenFBO(); fDeleteProgram(mBlitProgram); mBlitProgram = 0; fDeleteFramebuffers(1, &mBlitFramebuffer); mBlitFramebuffer = 0; mSymbols.Zero(); } already_AddRefed GLContext::ReadTextureImage(GLuint aTexture, const gfxIntSize& aSize, GLenum aTextureFormat) { MakeCurrent(); nsRefPtr isurf; GLint oldrb, oldfb, oldprog, oldPackAlignment; GLint success; GLuint rb = 0, fb = 0; GLuint vs = 0, fs = 0, prog = 0; const char *vShader = "attribute vec4 aVertex;\n" "attribute vec2 aTexCoord;\n" "varying vec2 vTexCoord;\n" "void main() { gl_Position = aVertex; vTexCoord = aTexCoord; }"; const char *fShader = "#ifdef GL_ES\n" "precision mediump float;\n" "#endif\n" "varying vec2 vTexCoord;\n" "uniform sampler2D uTexture;\n" "void main() { gl_FragColor = texture2D(uTexture, vTexCoord); }"; float verts[4*4] = { -1.0f, -1.0f, 0.0f, 1.0f, 1.0f, -1.0f, 0.0f, 1.0f, -1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f }; float texcoords[2*4] = { 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f }; fGetIntegerv(LOCAL_GL_RENDERBUFFER_BINDING, &oldrb); fGetIntegerv(LOCAL_GL_FRAMEBUFFER_BINDING, &oldfb); fGetIntegerv(LOCAL_GL_CURRENT_PROGRAM, &oldprog); fGetIntegerv(LOCAL_GL_PACK_ALIGNMENT, &oldPackAlignment); PushViewportRect(nsIntRect(0, 0, aSize.width, aSize.height)); fGenRenderbuffers(1, &rb); fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, rb); fRenderbufferStorage(LOCAL_GL_RENDERBUFFER, LOCAL_GL_RGBA, aSize.width, aSize.height); fGenFramebuffers(1, &fb); fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, fb); fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0, LOCAL_GL_RENDERBUFFER, rb); if (fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER) != LOCAL_GL_FRAMEBUFFER_COMPLETE) { goto cleanup; } vs = fCreateShader(LOCAL_GL_VERTEX_SHADER); fs = fCreateShader(LOCAL_GL_FRAGMENT_SHADER); fShaderSource(vs, 1, (const GLchar**) &vShader, NULL); fShaderSource(fs, 1, (const GLchar**) &fShader, NULL); prog = fCreateProgram(); fAttachShader(prog, vs); fAttachShader(prog, fs); fBindAttribLocation(prog, 0, "aVertex"); fBindAttribLocation(prog, 1, "aTexCoord"); fLinkProgram(prog); fGetProgramiv(prog, LOCAL_GL_LINK_STATUS, &success); if (!success) { goto cleanup; } fUseProgram(prog); fEnableVertexAttribArray(0); fEnableVertexAttribArray(1); fVertexAttribPointer(0, 4, LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0, verts); fVertexAttribPointer(1, 2, LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0, texcoords); fActiveTexture(LOCAL_GL_TEXTURE0); fBindTexture(LOCAL_GL_TEXTURE_2D, aTexture); fUniform1i(fGetUniformLocation(prog, "uTexture"), 0); fDrawArrays(LOCAL_GL_TRIANGLE_STRIP, 0, 4); fDisableVertexAttribArray(1); fDisableVertexAttribArray(0); isurf = new gfxImageSurface(aSize, gfxASurface::ImageFormatARGB32); if (!isurf || isurf->CairoStatus()) { isurf = nsnull; goto cleanup; } if (oldPackAlignment != 4) fPixelStorei(LOCAL_GL_PACK_ALIGNMENT, 4); fReadPixels(0, 0, aSize.width, aSize.height, LOCAL_GL_RGBA, LOCAL_GL_UNSIGNED_BYTE, isurf->Data()); if (oldPackAlignment != 4) fPixelStorei(LOCAL_GL_PACK_ALIGNMENT, oldPackAlignment); cleanup: // note that deleting 0 has no effect in any of these calls fDeleteRenderbuffers(1, &rb); fDeleteFramebuffers(1, &fb); fDeleteShader(vs); fDeleteShader(fs); fDeleteProgram(prog); fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, oldrb); fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, oldfb); fUseProgram(oldprog); PopViewportRect(); return isurf.forget(); } void GLContext::ReadPixelsIntoImageSurface(GLint aX, GLint aY, GLsizei aWidth, GLsizei aHeight, gfxImageSurface *aDest) { MakeCurrent(); if (aDest->Format() != gfxASurface::ImageFormatARGB32 && aDest->Format() != gfxASurface::ImageFormatRGB24) { NS_WARNING("ReadPixelsIntoImageSurface called with invalid image format"); return; } if (aDest->Width() != aWidth || aDest->Height() != aHeight || aDest->Stride() != aWidth * 4) { NS_WARNING("ReadPixelsIntoImageSurface called with wrong size or stride surface"); return; } GLint currentPackAlignment = 0; fGetIntegerv(LOCAL_GL_PACK_ALIGNMENT, ¤tPackAlignment); fPixelStorei(LOCAL_GL_PACK_ALIGNMENT, 4); // defaults for desktop GLenum format = LOCAL_GL_BGRA; GLenum datatype = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV; bool swap = false; if (IsGLES2()) { datatype = LOCAL_GL_UNSIGNED_BYTE; if (IsExtensionSupported(gl::GLContext::EXT_read_format_bgra) || IsExtensionSupported(gl::GLContext::IMG_read_format) || IsExtensionSupported(gl::GLContext::EXT_bgra)) { format = LOCAL_GL_BGRA; } else { format = LOCAL_GL_RGBA; swap = true; } } fReadPixels(0, 0, aWidth, aHeight, format, datatype, aDest->Data()); if (swap) { // swap B and R bytes for (int j = 0; j < aHeight; ++j) { PRUint32 *row = (PRUint32*) (aDest->Data() + aDest->Stride() * j); for (int i = 0; i < aWidth; ++i) { *row = (*row & 0xff00ff00) | ((*row & 0xff) << 16) | ((*row & 0xff0000) >> 16); row++; } } } fPixelStorei(LOCAL_GL_PACK_ALIGNMENT, currentPackAlignment); } void GLContext::BlitTextureImage(TextureImage *aSrc, const nsIntRect& aSrcRect, TextureImage *aDst, const nsIntRect& aDstRect) { NS_ASSERTION(!aSrc->InUpdate(), "Source texture is in update!"); NS_ASSERTION(!aDst->InUpdate(), "Destination texture is in update!"); if (aSrcRect.IsEmpty() || aDstRect.IsEmpty()) return; // only save/restore this stuff on Qualcomm Adreno, to work // around an apparent bug int savedFb = 0; if (mVendor == VendorQualcomm) { fGetIntegerv(LOCAL_GL_FRAMEBUFFER_BINDING, &savedFb); } fDisable(LOCAL_GL_SCISSOR_TEST); fDisable(LOCAL_GL_BLEND); // 2.0 means scale up by two float blitScaleX = float(aDstRect.width) / float(aSrcRect.width); float blitScaleY = float(aDstRect.height) / float(aSrcRect.height); // We start iterating over all destination tiles aDst->BeginTileIteration(); do { // calculate portion of the tile that is going to be painted to nsIntRect dstSubRect; nsIntRect dstTextureRect = aDst->GetTileRect(); dstSubRect.IntersectRect(aDstRect, dstTextureRect); // this tile is not part of the destination rectangle aDstRect if (dstSubRect.IsEmpty()) continue; // (*) transform the rect of this tile into the rectangle defined by aSrcRect... nsIntRect dstInSrcRect(dstSubRect); dstInSrcRect.MoveBy(-aDstRect.TopLeft()); // ...which might be of different size, hence scale accordingly dstInSrcRect.ScaleRoundOut(1.0f / blitScaleX, 1.0f / blitScaleY); dstInSrcRect.MoveBy(aSrcRect.TopLeft()); SetBlitFramebufferForDestTexture(aDst->GetTextureID()); UseBlitProgram(); aSrc->BeginTileIteration(); // now iterate over all tiles in the source Image... do { // calculate portion of the source tile that is in the source rect nsIntRect srcSubRect; nsIntRect srcTextureRect = aSrc->GetTileRect(); srcSubRect.IntersectRect(aSrcRect, srcTextureRect); // this tile is not part of the source rect if (srcSubRect.IsEmpty()) { continue; } // calculate intersection of source rect with destination rect srcSubRect.IntersectRect(srcSubRect, dstInSrcRect); // this tile does not overlap the current destination tile if (srcSubRect.IsEmpty()) { continue; } // We now have the intersection of // the current source tile // and the desired source rectangle // and the destination tile // and the desired destination rectange // in destination space. // We need to transform this back into destination space, inverting the transform from (*) nsIntRect srcSubInDstRect(srcSubRect); srcSubInDstRect.MoveBy(-aSrcRect.TopLeft()); srcSubInDstRect.ScaleRoundOut(blitScaleX, blitScaleY); srcSubInDstRect.MoveBy(aDstRect.TopLeft()); // we transform these rectangles to be relative to the current src and dst tiles, respectively nsIntSize srcSize = srcTextureRect.Size(); nsIntSize dstSize = dstTextureRect.Size(); srcSubRect.MoveBy(-srcTextureRect.x, -srcTextureRect.y); srcSubInDstRect.MoveBy(-dstTextureRect.x, -dstTextureRect.y); float dx0 = 2.0 * float(srcSubInDstRect.x) / float(dstSize.width) - 1.0; float dy0 = 2.0 * float(srcSubInDstRect.y) / float(dstSize.height) - 1.0; float dx1 = 2.0 * float(srcSubInDstRect.x + srcSubInDstRect.width) / float(dstSize.width) - 1.0; float dy1 = 2.0 * float(srcSubInDstRect.y + srcSubInDstRect.height) / float(dstSize.height) - 1.0; PushViewportRect(nsIntRect(0, 0, dstSize.width, dstSize.height)); RectTriangles rects; if (aSrc->GetWrapMode() == LOCAL_GL_REPEAT) { rects.addRect(/* dest rectangle */ dx0, dy0, dx1, dy1, /* tex coords */ srcSubRect.x / float(srcSize.width), srcSubRect.y / float(srcSize.height), srcSubRect.XMost() / float(srcSize.width), srcSubRect.YMost() / float(srcSize.height)); } else { DecomposeIntoNoRepeatTriangles(srcSubRect, srcSize, rects); // now put the coords into the d[xy]0 .. d[xy]1 coordinate space // from the 0..1 that it comes out of decompose RectTriangles::vert_coord* v = (RectTriangles::vert_coord*)rects.vertexPointer(); for (unsigned int i = 0; i < rects.elements(); ++i) { v[i].x = (v[i].x * (dx1 - dx0)) + dx0; v[i].y = (v[i].y * (dy1 - dy0)) + dy0; } } TextureImage::ScopedBindTexture texBind(aSrc, LOCAL_GL_TEXTURE0); fBindBuffer(LOCAL_GL_ARRAY_BUFFER, 0); fVertexAttribPointer(0, 2, LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0, rects.vertexPointer()); fVertexAttribPointer(1, 2, LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0, rects.texCoordPointer()); fEnableVertexAttribArray(0); fEnableVertexAttribArray(1); fDrawArrays(LOCAL_GL_TRIANGLES, 0, rects.elements()); fDisableVertexAttribArray(0); fDisableVertexAttribArray(1); PopViewportRect(); } while (aSrc->NextTile()); } while (aDst->NextTile()); fVertexAttribPointer(0, 2, LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0, NULL); fVertexAttribPointer(1, 2, LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0, NULL); // unbind the previous texture from the framebuffer SetBlitFramebufferForDestTexture(0); // then put back the previous framebuffer, and don't // enable stencil if it wasn't enabled on entry to work // around Adreno 200 bug that causes us to crash if // we enable scissor test while the current FBO is invalid // (which it will be, once we assign texture 0 to the color // attachment) if (mVendor == VendorQualcomm) { fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, savedFb); } fEnable(LOCAL_GL_SCISSOR_TEST); fEnable(LOCAL_GL_BLEND); } static unsigned int DataOffset(gfxImageSurface *aSurf, const nsIntPoint &aPoint) { unsigned int data = aPoint.y * aSurf->Stride(); data += aPoint.x * gfxASurface::BytePerPixelFromFormat(aSurf->Format()); return data; } ShaderProgramType GLContext::UploadSurfaceToTexture(gfxASurface *aSurface, const nsIntRegion& aDstRegion, GLuint& aTexture, bool aOverwrite, const nsIntPoint& aSrcPoint, bool aPixelBuffer) { bool textureInited = aOverwrite ? false : true; MakeCurrent(); fActiveTexture(LOCAL_GL_TEXTURE0); if (!aTexture) { fGenTextures(1, &aTexture); fBindTexture(LOCAL_GL_TEXTURE_2D, aTexture); fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_LINEAR); fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_LINEAR); fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE); fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE); textureInited = false; } else { fBindTexture(LOCAL_GL_TEXTURE_2D, aTexture); } nsIntRegion paintRegion; if (!textureInited) { paintRegion = nsIntRegion(aDstRegion.GetBounds()); } else { paintRegion = aDstRegion; } nsRefPtr imageSurface = aSurface->GetAsImageSurface(); unsigned char* data = NULL; if (!imageSurface || (imageSurface->Format() != gfxASurface::ImageFormatARGB32 && imageSurface->Format() != gfxASurface::ImageFormatRGB24 && imageSurface->Format() != gfxASurface::ImageFormatRGB16_565 && imageSurface->Format() != gfxASurface::ImageFormatA8)) { // We can't get suitable pixel data for the surface, make a copy nsIntRect bounds = aDstRegion.GetBounds(); imageSurface = new gfxImageSurface(gfxIntSize(bounds.width, bounds.height), gfxASurface::ImageFormatARGB32); nsRefPtr context = new gfxContext(imageSurface); context->Translate(-gfxPoint(aSrcPoint.x, aSrcPoint.y)); context->SetSource(aSurface); context->Paint(); data = imageSurface->Data(); NS_ASSERTION(!aPixelBuffer, "Must be using an image compatible surface with pixel buffers!"); } else { // If a pixel buffer is bound the data pointer parameter is relative // to the start of the data block. if (!aPixelBuffer) { data = imageSurface->Data(); } data += DataOffset(imageSurface, aSrcPoint); } GLenum format; GLenum internalformat; GLenum type; PRInt32 pixelSize = gfxASurface::BytePerPixelFromFormat(imageSurface->Format()); ShaderProgramType shader; switch (imageSurface->Format()) { case gfxASurface::ImageFormatARGB32: format = LOCAL_GL_RGBA; type = LOCAL_GL_UNSIGNED_BYTE; shader = BGRALayerProgramType; break; case gfxASurface::ImageFormatRGB24: // Treat RGB24 surfaces as RGBA32 except for the shader // program used. format = LOCAL_GL_RGBA; type = LOCAL_GL_UNSIGNED_BYTE; shader = BGRXLayerProgramType; break; case gfxASurface::ImageFormatRGB16_565: format = LOCAL_GL_RGB; type = LOCAL_GL_UNSIGNED_SHORT_5_6_5; shader = RGBALayerProgramType; break; case gfxASurface::ImageFormatA8: format = LOCAL_GL_LUMINANCE; type = LOCAL_GL_UNSIGNED_BYTE; // We don't have a specific luminance shader shader = ShaderProgramType(0); break; default: NS_ASSERTION(false, "Unhandled image surface format!"); format = 0; type = 0; shader = ShaderProgramType(0); } #ifndef USE_GLES2 fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, imageSurface->Stride() / pixelSize); internalformat = LOCAL_GL_RGBA; #else internalformat = format; #endif nsIntRegionRectIterator iter(paintRegion); const nsIntRect *iterRect; // Top left point of the region's bounding rectangle. nsIntPoint topLeft = paintRegion.GetBounds().TopLeft(); while ((iterRect = iter.Next())) { // The inital data pointer is at the top left point of the region's // bounding rectangle. We need to find the offset of this rect // within the region and adjust the data pointer accordingly. unsigned char *rectData = data + DataOffset(imageSurface, iterRect->TopLeft() - topLeft); #ifdef USE_GLES2 if (imageSurface->Stride() != iterRect->width * pixelSize) { // Not using the whole row of texture data and GLES doesn't // support GL_UNPACK_ROW_LENGTH. We need to upload each row // separately. if (!textureInited) { fTexImage2D(LOCAL_GL_TEXTURE_2D, 0, internalformat, iterRect->width, iterRect->height, 0, format, type, NULL); } for (int h = 0; h < iterRect->height; h++) { fTexSubImage2D(LOCAL_GL_TEXTURE_2D, 0, iterRect->x, iterRect->y+h, iterRect->width, 1, format, type, rectData); rectData += imageSurface->Stride(); } continue; } #endif if (textureInited) { fTexSubImage2D(LOCAL_GL_TEXTURE_2D, 0, iterRect->x, iterRect->y, iterRect->width, iterRect->height, format, type, rectData); } else { fTexImage2D(LOCAL_GL_TEXTURE_2D, 0, internalformat, iterRect->width, iterRect->height, 0, format, type, rectData); } } #ifndef USE_GLES2 fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, 0); #endif return shader; } void GLContext::RectTriangles::addRect(GLfloat x0, GLfloat y0, GLfloat x1, GLfloat y1, GLfloat tx0, GLfloat ty0, GLfloat tx1, GLfloat ty1) { vert_coord v; v.x = x0; v.y = y0; vertexCoords.AppendElement(v); v.x = x1; v.y = y0; vertexCoords.AppendElement(v); v.x = x0; v.y = y1; vertexCoords.AppendElement(v); v.x = x0; v.y = y1; vertexCoords.AppendElement(v); v.x = x1; v.y = y0; vertexCoords.AppendElement(v); v.x = x1; v.y = y1; vertexCoords.AppendElement(v); tex_coord t; t.u = tx0; t.v = ty0; texCoords.AppendElement(t); t.u = tx1; t.v = ty0; texCoords.AppendElement(t); t.u = tx0; t.v = ty1; texCoords.AppendElement(t); t.u = tx0; t.v = ty1; texCoords.AppendElement(t); t.u = tx1; t.v = ty0; texCoords.AppendElement(t); t.u = tx1; t.v = ty1; texCoords.AppendElement(t); } static GLfloat WrapTexCoord(GLfloat v) { // fmodf gives negative results for negative numbers; // that is, fmodf(0.75, 1.0) == 0.75, but // fmodf(-0.75, 1.0) == -0.75. For the negative case, // the result we need is 0.25, so we add 1.0f. if (v < 0.0f) { return 1.0f + fmodf(v, 1.0f); } return fmodf(v, 1.0f); } void GLContext::DecomposeIntoNoRepeatTriangles(const nsIntRect& aTexCoordRect, const nsIntSize& aTexSize, RectTriangles& aRects) { // normalize this nsIntRect tcr(aTexCoordRect); while (tcr.x > aTexSize.width) tcr.x -= aTexSize.width; while (tcr.y > aTexSize.height) tcr.y -= aTexSize.height; // Compute top left and bottom right tex coordinates GLfloat tl[2] = { GLfloat(tcr.x) / GLfloat(aTexSize.width), GLfloat(tcr.y) / GLfloat(aTexSize.height) }; GLfloat br[2] = { GLfloat(tcr.XMost()) / GLfloat(aTexSize.width), GLfloat(tcr.YMost()) / GLfloat(aTexSize.height) }; // then check if we wrap in either the x or y axis; if we do, // then also use fmod to figure out the "true" non-wrapping // texture coordinates. bool xwrap = false, ywrap = false; if (tcr.x < 0 || tcr.x > aTexSize.width || tcr.XMost() < 0 || tcr.XMost() > aTexSize.width) { xwrap = true; tl[0] = WrapTexCoord(tl[0]); br[0] = WrapTexCoord(br[0]); } if (tcr.y < 0 || tcr.y > aTexSize.height || tcr.YMost() < 0 || tcr.YMost() > aTexSize.height) { ywrap = true; tl[1] = WrapTexCoord(tl[1]); br[1] = WrapTexCoord(br[1]); } NS_ASSERTION(tl[0] >= 0.0f && tl[0] <= 1.0f && tl[1] >= 0.0f && tl[1] <= 1.0f && br[0] >= 0.0f && br[0] <= 1.0f && br[1] >= 0.0f && br[1] <= 1.0f, "Somehow generated invalid texture coordinates"); // If xwrap is false, the texture will be sampled from tl[0] // .. br[0]. If xwrap is true, then it will be split into tl[0] // .. 1.0, and 0.0 .. br[0]. Same for the Y axis. The // destination rectangle is also split appropriately, according // to the calculated xmid/ymid values. // There isn't a 1:1 mapping between tex coords and destination coords; // when computing midpoints, we have to take that into account. We // need to map the texture coords, which are (in the wrap case): // |tl->1| and |0->br| to the |0->1| range of the vertex coords. So // we have the length (1-tl)+(br) that needs to map into 0->1. // These are only valid if there is wrap involved, they won't be used // otherwise. GLfloat xlen = (1.0f - tl[0]) + br[0]; GLfloat ylen = (1.0f - tl[1]) + br[1]; NS_ASSERTION(!xwrap || xlen > 0.0f, "xlen isn't > 0, what's going on?"); NS_ASSERTION(!ywrap || ylen > 0.0f, "ylen isn't > 0, what's going on?"); NS_ASSERTION(aTexCoordRect.width <= aTexSize.width && aTexCoordRect.height <= aTexSize.height, "tex coord rect would cause tiling!"); if (!xwrap && !ywrap) { aRects.addRect(0.0f, 0.0f, 1.0f, 1.0f, tl[0], tl[1], br[0], br[1]); } else if (!xwrap && ywrap) { GLfloat ymid = (1.0f - tl[1]) / ylen; aRects.addRect(0.0f, 0.0f, 1.0f, ymid, tl[0], tl[1], br[0], 1.0f); aRects.addRect(0.0f, ymid, 1.0f, 1.0f, tl[0], 0.0f, br[0], br[1]); } else if (xwrap && !ywrap) { GLfloat xmid = (1.0f - tl[0]) / xlen; aRects.addRect(0.0f, 0.0f, xmid, 1.0f, tl[0], tl[1], 1.0f, br[1]); aRects.addRect(xmid, 0.0f, 1.0f, 1.0f, 0.0f, tl[1], br[0], br[1]); } else { GLfloat xmid = (1.0f - tl[0]) / xlen; GLfloat ymid = (1.0f - tl[1]) / ylen; aRects.addRect(0.0f, 0.0f, xmid, ymid, tl[0], tl[1], 1.0f, 1.0f); aRects.addRect(xmid, 0.0f, 1.0f, ymid, 0.0f, tl[1], br[0], 1.0f); aRects.addRect(0.0f, ymid, xmid, 1.0f, tl[0], 0.0f, 1.0f, br[1]); aRects.addRect(xmid, ymid, 1.0f, 1.0f, 0.0f, 0.0f, br[0], br[1]); } } void GLContext::UseBlitProgram() { if (mBlitProgram) { fUseProgram(mBlitProgram); return; } mBlitProgram = fCreateProgram(); GLuint shaders[2]; shaders[0] = fCreateShader(LOCAL_GL_VERTEX_SHADER); shaders[1] = fCreateShader(LOCAL_GL_FRAGMENT_SHADER); const char *blitVSSrc = "attribute vec2 aVertex;" "attribute vec2 aTexCoord;" "varying vec2 vTexCoord;" "void main() {" " vTexCoord = aTexCoord;" " gl_Position = vec4(aVertex, 0.0, 1.0);" "}"; const char *blitFSSrc = "#ifdef GL_ES\nprecision mediump float;\n#endif\n" "uniform sampler2D uSrcTexture;" "varying vec2 vTexCoord;" "void main() {" " gl_FragColor = texture2D(uSrcTexture, vTexCoord);" "}"; fShaderSource(shaders[0], 1, (const GLchar**) &blitVSSrc, NULL); fShaderSource(shaders[1], 1, (const GLchar**) &blitFSSrc, NULL); for (int i = 0; i < 2; ++i) { GLint success, len = 0; fCompileShader(shaders[i]); fGetShaderiv(shaders[i], LOCAL_GL_COMPILE_STATUS, &success); NS_ASSERTION(success, "Shader compilation failed!"); if (!success) { nsCAutoString log; fGetShaderiv(shaders[i], LOCAL_GL_INFO_LOG_LENGTH, (GLint*) &len); log.SetCapacity(len); fGetShaderInfoLog(shaders[i], len, (GLint*) &len, (char*) log.BeginWriting()); log.SetLength(len); printf_stderr("Shader %d compilation failed:\n%s\n", log.get()); return; } fAttachShader(mBlitProgram, shaders[i]); fDeleteShader(shaders[i]); } fBindAttribLocation(mBlitProgram, 0, "aVertex"); fBindAttribLocation(mBlitProgram, 1, "aTexCoord"); fLinkProgram(mBlitProgram); GLint success, len = 0; fGetProgramiv(mBlitProgram, LOCAL_GL_LINK_STATUS, &success); NS_ASSERTION(success, "Shader linking failed!"); if (!success) { nsCAutoString log; fGetProgramiv(mBlitProgram, LOCAL_GL_INFO_LOG_LENGTH, (GLint*) &len); log.SetCapacity(len); fGetProgramInfoLog(mBlitProgram, len, (GLint*) &len, (char*) log.BeginWriting()); log.SetLength(len); printf_stderr("Program linking failed:\n%s\n", log.get()); return; } fUseProgram(mBlitProgram); fUniform1i(fGetUniformLocation(mBlitProgram, "uSrcTexture"), 0); } void GLContext::SetBlitFramebufferForDestTexture(GLuint aTexture) { if (!mBlitFramebuffer) { fGenFramebuffers(1, &mBlitFramebuffer); } fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, mBlitFramebuffer); fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0, LOCAL_GL_TEXTURE_2D, aTexture, 0); if (aTexture) { DebugOnly status = fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER); // Note: if you are hitting this assertion, it is likely that // your texture is not texture complete -- that is, you // allocated a texture name, but didn't actually define its // size via a call to TexImage2D. NS_ASSERTION(status == LOCAL_GL_FRAMEBUFFER_COMPLETE, "Framebuffer not complete!"); } } #ifdef DEBUG void GLContext::CreatedProgram(GLContext *aOrigin, GLuint aName) { mTrackedPrograms.AppendElement(NamedResource(aOrigin, aName)); } void GLContext::CreatedShader(GLContext *aOrigin, GLuint aName) { mTrackedShaders.AppendElement(NamedResource(aOrigin, aName)); } void GLContext::CreatedBuffers(GLContext *aOrigin, GLsizei aCount, GLuint *aNames) { for (GLsizei i = 0; i < aCount; ++i) { mTrackedBuffers.AppendElement(NamedResource(aOrigin, aNames[i])); } } void GLContext::CreatedTextures(GLContext *aOrigin, GLsizei aCount, GLuint *aNames) { for (GLsizei i = 0; i < aCount; ++i) { mTrackedTextures.AppendElement(NamedResource(aOrigin, aNames[i])); } } void GLContext::CreatedFramebuffers(GLContext *aOrigin, GLsizei aCount, GLuint *aNames) { for (GLsizei i = 0; i < aCount; ++i) { mTrackedFramebuffers.AppendElement(NamedResource(aOrigin, aNames[i])); } } void GLContext::CreatedRenderbuffers(GLContext *aOrigin, GLsizei aCount, GLuint *aNames) { for (GLsizei i = 0; i < aCount; ++i) { mTrackedRenderbuffers.AppendElement(NamedResource(aOrigin, aNames[i])); } } static void RemoveNamesFromArray(GLContext *aOrigin, GLsizei aCount, GLuint *aNames, nsTArray& aArray) { for (GLsizei j = 0; j < aCount; ++j) { GLuint name = aNames[j]; // name 0 can be ignored if (name == 0) continue; PRBool found = PR_FALSE; for (PRUint32 i = 0; i < aArray.Length(); ++i) { if (aArray[i].name == name) { aArray.RemoveElementAt(i); found = PR_TRUE; break; } } #ifdef DEBUG if (!found) { printf_stderr("GL Context %p deleting resource %d, which doesn't exist!\n", aOrigin, name); } #endif } } void GLContext::DeletedProgram(GLContext *aOrigin, GLuint aName) { RemoveNamesFromArray(aOrigin, 1, &aName, mTrackedPrograms); } void GLContext::DeletedShader(GLContext *aOrigin, GLuint aName) { RemoveNamesFromArray(aOrigin, 1, &aName, mTrackedShaders); } void GLContext::DeletedBuffers(GLContext *aOrigin, GLsizei aCount, GLuint *aNames) { RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedBuffers); } void GLContext::DeletedTextures(GLContext *aOrigin, GLsizei aCount, GLuint *aNames) { RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedTextures); } void GLContext::DeletedFramebuffers(GLContext *aOrigin, GLsizei aCount, GLuint *aNames) { RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedFramebuffers); } void GLContext::DeletedRenderbuffers(GLContext *aOrigin, GLsizei aCount, GLuint *aNames) { RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedRenderbuffers); } static void MarkContextDestroyedInArray(GLContext *aContext, nsTArray& aArray) { for (PRUint32 i = 0; i < aArray.Length(); ++i) { if (aArray[i].origin == aContext) aArray[i].originDeleted = PR_TRUE; } } void GLContext::SharedContextDestroyed(GLContext *aChild) { MarkContextDestroyedInArray(aChild, mTrackedPrograms); MarkContextDestroyedInArray(aChild, mTrackedShaders); MarkContextDestroyedInArray(aChild, mTrackedTextures); MarkContextDestroyedInArray(aChild, mTrackedFramebuffers); MarkContextDestroyedInArray(aChild, mTrackedRenderbuffers); MarkContextDestroyedInArray(aChild, mTrackedBuffers); } static void ReportArrayContents(const nsTArray& aArray) { nsTArray copy(aArray); copy.Sort(); GLContext *lastContext = NULL; for (PRUint32 i = 0; i < copy.Length(); ++i) { if (lastContext != copy[i].origin) { if (lastContext) printf_stderr("\n"); printf_stderr(" [%p - %s] ", copy[i].origin, copy[i].originDeleted ? "deleted" : "live"); lastContext = copy[i].origin; } printf_stderr("%d ", copy[i].name); } printf_stderr("\n"); } void GLContext::ReportOutstandingNames() { printf_stderr("== GLContext %p ==\n", this); printf_stderr("Outstanding Textures:\n"); ReportArrayContents(mTrackedTextures); printf_stderr("Outstanding Buffers:\n"); ReportArrayContents(mTrackedBuffers); printf_stderr("Outstanding Programs:\n"); ReportArrayContents(mTrackedPrograms); printf_stderr("Outstanding Shaders:\n"); ReportArrayContents(mTrackedShaders); printf_stderr("Outstanding Framebuffers:\n"); ReportArrayContents(mTrackedFramebuffers); printf_stderr("Outstanding Renderbuffers:\n"); ReportArrayContents(mTrackedRenderbuffers); } #endif /* DEBUG */ } /* namespace gl */ } /* namespace mozilla */