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400 lines
11 KiB
C++
400 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 Corporation code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2010
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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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*
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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 "mozilla/layers/PLayers.h"
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#include "mozilla/layers/ShadowLayers.h"
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#include "gfxSharedImageSurface.h"
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#include "CanvasLayerOGL.h"
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#include "gfxImageSurface.h"
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#include "gfxContext.h"
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#include "GLContextProvider.h"
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#ifdef XP_WIN
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#include "gfxWindowsSurface.h"
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#include "WGLLibrary.h"
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#endif
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#ifdef XP_MACOSX
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#include <OpenGL/OpenGL.h>
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#endif
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#ifdef MOZ_X11
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#include "gfxXlibSurface.h"
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#endif
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using namespace mozilla;
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using namespace mozilla::layers;
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using namespace mozilla::gl;
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void
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CanvasLayerOGL::Destroy()
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{
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if (!mDestroyed) {
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if (mTexture) {
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GLContext *cx = mOGLManager->glForResources();
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cx->MakeCurrent();
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cx->fDeleteTextures(1, &mTexture);
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}
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mDestroyed = PR_TRUE;
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}
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}
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void
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CanvasLayerOGL::Initialize(const Data& aData)
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{
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NS_ASSERTION(mCanvasSurface == nsnull, "BasicCanvasLayer::Initialize called twice!");
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if (aData.mGLContext != nsnull &&
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aData.mSurface != nsnull)
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{
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NS_WARNING("CanvasLayerOGL can't have both surface and GLContext");
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return;
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}
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mOGLManager->MakeCurrent();
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if (aData.mSurface) {
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mCanvasSurface = aData.mSurface;
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mNeedsYFlip = PR_FALSE;
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#if defined(MOZ_WIDGET_GTK2) && !defined(MOZ_PLATFORM_MAEMO)
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if (aData.mSurface->GetType() == gfxASurface::SurfaceTypeXlib) {
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gfxXlibSurface *xsurf = static_cast<gfxXlibSurface*>(aData.mSurface);
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mPixmap = xsurf->GetGLXPixmap();
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if (mPixmap) {
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if (aData.mSurface->GetContentType() == gfxASurface::CONTENT_COLOR_ALPHA) {
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mLayerProgram = gl::RGBALayerProgramType;
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} else {
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mLayerProgram = gl::RGBXLayerProgramType;
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}
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MakeTexture();
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}
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}
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#endif
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} else if (aData.mGLContext) {
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if (!aData.mGLContext->IsOffscreen()) {
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NS_WARNING("CanvasLayerOGL with a non-offscreen GL context given");
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return;
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}
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mCanvasGLContext = aData.mGLContext;
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mGLBufferIsPremultiplied = aData.mGLBufferIsPremultiplied;
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mNeedsYFlip = PR_TRUE;
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} else {
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NS_WARNING("CanvasLayerOGL::Initialize called without surface or GL context!");
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return;
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}
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mBounds.SetRect(0, 0, aData.mSize.width, aData.mSize.height);
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// Check the maximum texture size supported by GL. glTexImage2D supports
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// images of up to 2 + GL_MAX_TEXTURE_SIZE
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GLint texSize = gl()->GetMaxTextureSize();
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if (mBounds.width > (2 + texSize) || mBounds.height > (2 + texSize)) {
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mDelayedUpdates = PR_TRUE;
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MakeTexture();
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// This should only ever occur with 2d canvas, WebGL can't already have a texture
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// of this size can it?
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NS_ABORT_IF_FALSE(mCanvasSurface,
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"Invalid texture size when WebGL surface already exists at that size?");
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}
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}
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void
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CanvasLayerOGL::MakeTexture()
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{
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if (mTexture != 0)
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return;
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gl()->fGenTextures(1, &mTexture);
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gl()->fActiveTexture(LOCAL_GL_TEXTURE0);
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gl()->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
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gl()->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_LINEAR);
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gl()->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_LINEAR);
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gl()->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE);
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gl()->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE);
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}
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void
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CanvasLayerOGL::UpdateSurface()
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{
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if (!mDirty)
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return;
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mDirty = PR_FALSE;
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if (mDestroyed || mDelayedUpdates) {
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return;
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}
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#if defined(MOZ_WIDGET_GTK2) && !defined(MOZ_PLATFORM_MAEMO)
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if (mPixmap) {
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return;
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}
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#endif
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mOGLManager->MakeCurrent();
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if (mCanvasGLContext &&
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mCanvasGLContext->GetContextType() == gl()->GetContextType())
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{
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if (gl()->BindOffscreenNeedsTexture(mCanvasGLContext) &&
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mTexture == 0)
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{
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MakeTexture();
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}
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} else {
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nsRefPtr<gfxASurface> updatedAreaSurface;
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if (mCanvasSurface) {
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updatedAreaSurface = mCanvasSurface;
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} else if (mCanvasGLContext) {
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nsRefPtr<gfxImageSurface> updatedAreaImageSurface =
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new gfxImageSurface(gfxIntSize(mBounds.width, mBounds.height),
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gfxASurface::ImageFormatARGB32);
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mCanvasGLContext->ReadPixelsIntoImageSurface(0, 0,
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mBounds.width,
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mBounds.height,
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updatedAreaImageSurface);
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updatedAreaSurface = updatedAreaImageSurface;
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}
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mLayerProgram =
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gl()->UploadSurfaceToTexture(updatedAreaSurface,
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mBounds,
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mTexture,
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false,
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nsIntPoint(0, 0));
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}
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}
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void
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CanvasLayerOGL::RenderLayer(int aPreviousDestination,
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const nsIntPoint& aOffset)
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{
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UpdateSurface();
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FireDidTransactionCallback();
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mOGLManager->MakeCurrent();
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// XXX We're going to need a different program depending on if
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// mGLBufferIsPremultiplied is TRUE or not. The RGBLayerProgram
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// assumes that it's true.
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gl()->fActiveTexture(LOCAL_GL_TEXTURE0);
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if (mTexture) {
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gl()->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
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}
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ColorTextureLayerProgram *program = nsnull;
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bool useGLContext = mCanvasGLContext &&
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mCanvasGLContext->GetContextType() == gl()->GetContextType();
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nsIntRect drawRect = mBounds;
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if (useGLContext) {
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mCanvasGLContext->MakeCurrent();
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mCanvasGLContext->fFlush();
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gl()->MakeCurrent();
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gl()->BindTex2DOffscreen(mCanvasGLContext);
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program = mOGLManager->GetBasicLayerProgram(CanUseOpaqueSurface(), PR_TRUE);
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} else if (mDelayedUpdates) {
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NS_ABORT_IF_FALSE(mCanvasSurface, "WebGL canvases should always be using full texture upload");
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drawRect.IntersectRect(drawRect, GetEffectiveVisibleRegion().GetBounds());
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mLayerProgram =
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gl()->UploadSurfaceToTexture(mCanvasSurface,
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nsIntRect(0, 0, drawRect.width, drawRect.height),
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mTexture,
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true,
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drawRect.TopLeft());
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}
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if (!program) {
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program = mOGLManager->GetColorTextureLayerProgram(mLayerProgram);
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}
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#if defined(MOZ_WIDGET_GTK2) && !defined(MOZ_PLATFORM_MAEMO)
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if (mPixmap && !mDelayedUpdates) {
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sGLXLibrary.BindTexImage(mPixmap);
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}
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#endif
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gl()->ApplyFilterToBoundTexture(mFilter);
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program->Activate();
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program->SetLayerQuadRect(drawRect);
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program->SetLayerTransform(GetEffectiveTransform());
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program->SetLayerOpacity(GetEffectiveOpacity());
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program->SetRenderOffset(aOffset);
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program->SetTextureUnit(0);
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mOGLManager->BindAndDrawQuad(program, mNeedsYFlip ? true : false);
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#if defined(MOZ_WIDGET_GTK2) && !defined(MOZ_PLATFORM_MAEMO)
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if (mPixmap && !mDelayedUpdates) {
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sGLXLibrary.ReleaseTexImage(mPixmap);
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}
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#endif
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if (useGLContext) {
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gl()->UnbindTex2DOffscreen(mCanvasGLContext);
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}
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}
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ShadowCanvasLayerOGL::ShadowCanvasLayerOGL(LayerManagerOGL* aManager)
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: ShadowCanvasLayer(aManager, nsnull)
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, LayerOGL(aManager)
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, mNeedsYFlip(PR_FALSE)
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{
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mImplData = static_cast<LayerOGL*>(this);
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}
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ShadowCanvasLayerOGL::~ShadowCanvasLayerOGL()
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{}
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void
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ShadowCanvasLayerOGL::Initialize(const Data& aData)
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{
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NS_RUNTIMEABORT("Incompatibe surface type");
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}
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void
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ShadowCanvasLayerOGL::Init(const CanvasSurface& aNewFront, bool needYFlip)
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{
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nsRefPtr<gfxASurface> surf = ShadowLayerForwarder::OpenDescriptor(aNewFront);
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mTexImage = gl()->CreateTextureImage(surf->GetSize(),
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surf->GetContentType(),
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LOCAL_GL_CLAMP_TO_EDGE);
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mNeedsYFlip = needYFlip;
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}
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void
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ShadowCanvasLayerOGL::Swap(const CanvasSurface& aNewFront,
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bool needYFlip,
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CanvasSurface* aNewBack)
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{
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if (!mDestroyed) {
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nsRefPtr<gfxASurface> surf = ShadowLayerForwarder::OpenDescriptor(aNewFront);
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gfxIntSize sz = surf->GetSize();
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if (!mTexImage || mTexImage->GetSize() != sz) {
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Init(aNewFront, needYFlip);
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}
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nsIntRegion updateRegion(nsIntRect(0, 0, sz.width, sz.height));
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mTexImage->DirectUpdate(surf, updateRegion);
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}
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*aNewBack = aNewFront;
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}
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void
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ShadowCanvasLayerOGL::DestroyFrontBuffer()
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{
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mTexImage = nsnull;
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}
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void
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ShadowCanvasLayerOGL::Disconnect()
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{
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Destroy();
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}
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void
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ShadowCanvasLayerOGL::Destroy()
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{
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if (!mDestroyed) {
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mDestroyed = PR_TRUE;
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mTexImage = nsnull;
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}
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}
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Layer*
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ShadowCanvasLayerOGL::GetLayer()
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{
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return this;
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}
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void
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ShadowCanvasLayerOGL::RenderLayer(int aPreviousFrameBuffer,
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const nsIntPoint& aOffset)
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{
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mOGLManager->MakeCurrent();
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ColorTextureLayerProgram *program =
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mOGLManager->GetColorTextureLayerProgram(mTexImage->GetShaderProgramType());
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gfx3DMatrix effectiveTransform = GetEffectiveTransform();
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#ifdef ANDROID
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// Bug 691354
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// Using the LINEAR filter we get unexplained artifacts.
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// Use NEAREST when no scaling is required.
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gfxMatrix matrix;
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bool is2D = GetEffectiveTransform().Is2D(&matrix);
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if (is2D && !matrix.HasNonTranslationOrFlip()) {
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mTexImage->SetFilter(gfxPattern::FILTER_NEAREST);
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} else {
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mTexImage->SetFilter(mFilter);
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}
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#else
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mTexImage->SetFilter(mFilter);
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#endif
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program->Activate();
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program->SetLayerTransform(effectiveTransform);
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program->SetLayerOpacity(GetEffectiveOpacity());
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program->SetRenderOffset(aOffset);
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program->SetTextureUnit(0);
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mTexImage->BeginTileIteration();
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do {
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TextureImage::ScopedBindTextureAndApplyFilter texBind(mTexImage, LOCAL_GL_TEXTURE0);
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program->SetLayerQuadRect(mTexImage->GetTileRect());
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mOGLManager->BindAndDrawQuad(program, mNeedsYFlip); // FIXME flip order of tiles?
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} while (mTexImage->NextTile());
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}
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