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6536947736
The rectangle parameter is currently not used --- all callers always pass the full canvas bounds. In the long term, we probably won't want this parameter since all implementations should be doing accelerated drawing direct to buffers with no intermediate copies, hence there will be no need to optimize the size of those copies. Plus, performance-sensitive testcases tend to paint most or all of the canvas on every frame anyway.
290 lines
9.0 KiB
C++
290 lines
9.0 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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* Bas Schouten <bschouten@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "CanvasLayerD3D9.h"
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#include "gfxImageSurface.h"
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#include "gfxWindowsSurface.h"
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#include "gfxWindowsPlatform.h"
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namespace mozilla {
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namespace layers {
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CanvasLayerD3D9::~CanvasLayerD3D9()
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{
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if (mD3DManager) {
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mD3DManager->deviceManager()->mLayersWithResources.RemoveElement(this);
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}
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}
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void
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CanvasLayerD3D9::Initialize(const Data& aData)
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{
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NS_ASSERTION(mSurface == nsnull, "BasicCanvasLayer::Initialize called twice!");
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if (aData.mSurface) {
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mSurface = aData.mSurface;
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NS_ASSERTION(aData.mGLContext == nsnull,
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"CanvasLayer can't have both surface and GLContext");
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mNeedsYFlip = PR_FALSE;
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mDataIsPremultiplied = PR_TRUE;
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} else if (aData.mGLContext) {
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NS_ASSERTION(aData.mGLContext->IsOffscreen(), "canvas gl context isn't offscreen");
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mGLContext = aData.mGLContext;
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mCanvasFramebuffer = mGLContext->GetOffscreenFBO();
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mDataIsPremultiplied = aData.mGLBufferIsPremultiplied;
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mNeedsYFlip = PR_TRUE;
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} else {
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NS_ERROR("CanvasLayer created without mSurface or mGLContext?");
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}
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mBounds.SetRect(0, 0, aData.mSize.width, aData.mSize.height);
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CreateTexture();
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}
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void
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CanvasLayerD3D9::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 (!mTexture) {
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CreateTexture();
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NS_WARNING("CanvasLayerD3D9::Updated called but no texture present!");
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return;
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}
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if (mGLContext) {
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// WebGL reads entire surface.
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D3DLOCKED_RECT r;
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HRESULT hr = mTexture->LockRect(0, &r, NULL, 0);
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if (FAILED(hr)) {
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NS_WARNING("Failed to lock CanvasLayer texture.");
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return;
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}
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PRUint8 *destination;
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if (r.Pitch != mBounds.width * 4) {
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destination = new PRUint8[mBounds.width * mBounds.height * 4];
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} else {
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destination = (PRUint8*)r.pBits;
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}
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// We have to flush to ensure that any buffered GL operations are
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// in the framebuffer before we read.
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mGLContext->fFlush();
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PRUint32 currentFramebuffer = 0;
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mGLContext->fGetIntegerv(LOCAL_GL_FRAMEBUFFER_BINDING, (GLint*)¤tFramebuffer);
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// Make sure that we read pixels from the correct framebuffer, regardless
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// of what's currently bound.
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if (currentFramebuffer != mCanvasFramebuffer)
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mGLContext->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, mCanvasFramebuffer);
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nsRefPtr<gfxImageSurface> tmpSurface =
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new gfxImageSurface(destination,
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gfxIntSize(mBounds.width, mBounds.height),
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mBounds.width * 4,
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gfxASurface::ImageFormatARGB32);
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mGLContext->ReadPixelsIntoImageSurface(0, 0,
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mBounds.width, mBounds.height,
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tmpSurface);
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tmpSurface = nsnull;
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// Put back the previous framebuffer binding.
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if (currentFramebuffer != mCanvasFramebuffer)
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mGLContext->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, currentFramebuffer);
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if (r.Pitch != mBounds.width * 4) {
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for (int y = 0; y < mBounds.height; y++) {
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memcpy((PRUint8*)r.pBits + r.Pitch * y,
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destination + mBounds.width * 4 * y,
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mBounds.width * 4);
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}
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delete [] destination;
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}
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mTexture->UnlockRect(0);
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} else if (mSurface) {
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RECT r;
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r.left = mBounds.x;
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r.top = mBounds.y;
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r.right = mBounds.XMost();
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r.bottom = mBounds.YMost();
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D3DLOCKED_RECT lockedRect;
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HRESULT hr = mTexture->LockRect(0, &lockedRect, &r, 0);
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if (FAILED(hr)) {
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NS_WARNING("Failed to lock CanvasLayer texture.");
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return;
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}
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nsRefPtr<gfxImageSurface> sourceSurface;
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if (mSurface->GetType() == gfxASurface::SurfaceTypeWin32) {
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sourceSurface = mSurface->GetAsImageSurface();
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} else if (mSurface->GetType() == gfxASurface::SurfaceTypeImage) {
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sourceSurface = static_cast<gfxImageSurface*>(mSurface.get());
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if (sourceSurface->Format() != gfxASurface::ImageFormatARGB32 &&
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sourceSurface->Format() != gfxASurface::ImageFormatRGB24)
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{
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mTexture->UnlockRect(0);
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return;
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}
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} else {
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sourceSurface = new gfxImageSurface(gfxIntSize(mBounds.width, mBounds.height),
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gfxASurface::ImageFormatARGB32);
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nsRefPtr<gfxContext> ctx = new gfxContext(sourceSurface);
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ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
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ctx->SetSource(mSurface);
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ctx->Paint();
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}
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PRUint8 *startBits = sourceSurface->Data();
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PRUint32 sourceStride = sourceSurface->Stride();
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if (sourceSurface->Format() != gfxASurface::ImageFormatARGB32) {
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mHasAlpha = false;
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} else {
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mHasAlpha = true;
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}
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for (int y = 0; y < mBounds.height; y++) {
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memcpy((PRUint8*)lockedRect.pBits + lockedRect.Pitch * y,
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startBits + sourceStride * y,
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mBounds.width * 4);
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}
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mTexture->UnlockRect(0);
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}
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}
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Layer*
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CanvasLayerD3D9::GetLayer()
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{
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return this;
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}
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void
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CanvasLayerD3D9::RenderLayer()
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{
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UpdateSurface();
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if (!mTexture)
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return;
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/*
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* We flip the Y axis here, note we can only do this because we are in
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* CULL_NONE mode!
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*/
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ShaderConstantRect quad(0, 0, mBounds.width, mBounds.height);
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if (mNeedsYFlip) {
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quad.mHeight = (float)-mBounds.height;
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quad.mY = (float)mBounds.height;
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}
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device()->SetVertexShaderConstantF(CBvLayerQuad, quad, 1);
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SetShaderTransformAndOpacity();
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if (mHasAlpha) {
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mD3DManager->SetShaderMode(DeviceManagerD3D9::RGBALAYER);
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} else {
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mD3DManager->SetShaderMode(DeviceManagerD3D9::RGBLAYER);
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}
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if (mFilter == gfxPattern::FILTER_NEAREST) {
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device()->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_POINT);
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device()->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_POINT);
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}
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if (!mDataIsPremultiplied) {
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device()->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);
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device()->SetRenderState(D3DRS_SEPARATEALPHABLENDENABLE, TRUE);
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}
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device()->SetTexture(0, mTexture);
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device()->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2);
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if (!mDataIsPremultiplied) {
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device()->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_ONE);
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device()->SetRenderState(D3DRS_SEPARATEALPHABLENDENABLE, FALSE);
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}
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if (mFilter == gfxPattern::FILTER_NEAREST) {
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device()->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
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device()->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
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}
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}
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void
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CanvasLayerD3D9::CleanResources()
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{
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if (mD3DManager->deviceManager()->HasDynamicTextures()) {
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// In this case we have a texture in POOL_DEFAULT
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mTexture = nsnull;
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}
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}
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void
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CanvasLayerD3D9::LayerManagerDestroyed()
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{
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mD3DManager->deviceManager()->mLayersWithResources.RemoveElement(this);
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mD3DManager = nsnull;
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}
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void
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CanvasLayerD3D9::CreateTexture()
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{
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if (mD3DManager->deviceManager()->HasDynamicTextures()) {
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device()->CreateTexture(mBounds.width, mBounds.height, 1, D3DUSAGE_DYNAMIC,
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D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT,
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getter_AddRefs(mTexture), NULL);
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} else {
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// D3DPOOL_MANAGED is fine here since we require Dynamic Textures for D3D9Ex
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// devices.
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device()->CreateTexture(mBounds.width, mBounds.height, 1, 0,
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D3DFMT_A8R8G8B8, D3DPOOL_MANAGED,
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getter_AddRefs(mTexture), NULL);
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}
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}
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} /* namespace layers */
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} /* namespace mozilla */
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