mirror of
https://github.com/mozilla/gecko-dev.git
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364 lines
12 KiB
C++
364 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "CanvasLayerOGL.h"
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#include "GLContext.h" // for GLContext
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#include "GLScreenBuffer.h" // for GLScreenBuffer
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#include "SharedSurface.h" // for SharedSurface
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#include "SharedSurfaceGL.h" // for SharedSurface_Basic, etc
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#include "SurfaceStream.h" // for SurfaceStream, etc
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#include "SurfaceTypes.h" // for SharedSurfaceType, etc
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#include "gfx3DMatrix.h" // for gfx3DMatrix
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#include "gfxImageSurface.h" // for gfxImageSurface
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#include "gfxPlatform.h" // for gfxPlatform
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#include "mozilla/Assertions.h" // for MOZ_ASSERT, etc
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#include "mozilla/gfx/Types.h" // for SurfaceFormat, etc
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#include "nsDebug.h" // for NS_ABORT_IF_FALSE, etc
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#include "nsPoint.h" // for nsIntPoint
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#include "nsRect.h" // for nsIntRect
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#include "nsRegion.h" // for nsIntRegion
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#include "nsSize.h" // for nsIntSize
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#include "LayerManagerOGL.h" // for LayerOGL::GLContext, etc
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#ifdef XP_MACOSX
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#include "mozilla/gfx/MacIOSurface.h"
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#include "SharedSurfaceIO.h"
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#endif
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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 GL_PROVIDER_GLX
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#include "GLXLibrary.h" // for GLXLibrary, sDefGLXLib
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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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using namespace mozilla::gfx;
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static void
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MakeTextureIfNeeded(GLContext* gl, GLuint& aTexture)
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{
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if (aTexture != 0)
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return;
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gl->fGenTextures(1, &aTexture);
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gl->fActiveTexture(LOCAL_GL_TEXTURE0);
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gl->fBindTexture(LOCAL_GL_TEXTURE_2D, aTexture);
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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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#ifdef XP_MACOSX
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static GLuint
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MakeIOSurfaceTexture(void* aCGIOSurfaceContext, mozilla::gl::GLContext* aGL)
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{
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GLuint ioSurfaceTexture;
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aGL->MakeCurrent();
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aGL->fGenTextures(1, &ioSurfaceTexture);
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aGL->fActiveTexture(LOCAL_GL_TEXTURE0);
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aGL->fBindTexture(LOCAL_GL_TEXTURE_RECTANGLE_ARB, ioSurfaceTexture);
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aGL->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB, LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_LINEAR);
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aGL->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB, LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_LINEAR);
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aGL->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE);
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aGL->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE);
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RefPtr<MacIOSurface> ioSurface = MacIOSurface::IOSurfaceContextGetSurface((CGContextRef)aCGIOSurfaceContext);
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void *nativeCtx = aGL->GetNativeData(GLContext::NativeGLContext);
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ioSurface->CGLTexImageIOSurface2D(nativeCtx);
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aGL->fBindTexture(LOCAL_GL_TEXTURE_RECTANGLE_ARB, 0);
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return ioSurfaceTexture;
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}
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#endif
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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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CleanupResources();
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mDestroyed = 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 == nullptr, "BasicCanvasLayer::Initialize called twice!");
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if (aData.mGLContext != nullptr &&
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aData.mSurface != nullptr)
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{
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NS_WARNING("CanvasLayerOGL can't have both surface and WebGLContext");
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return;
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}
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mOGLManager->MakeCurrent();
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if (aData.mDrawTarget &&
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aData.mDrawTarget->GetNativeSurface(gfx::NATIVE_SURFACE_CGCONTEXT_ACCELERATED)) {
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mDrawTarget = aData.mDrawTarget;
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mNeedsYFlip = false;
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mBounds.SetRect(0, 0, aData.mSize.width, aData.mSize.height);
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return;
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} else if (aData.mDrawTarget) {
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mDrawTarget = aData.mDrawTarget;
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mCanvasSurface = gfxPlatform::GetPlatform()->CreateThebesSurfaceAliasForDrawTarget_hack(mDrawTarget);
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mNeedsYFlip = false;
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} else if (aData.mSurface) {
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mCanvasSurface = aData.mSurface;
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mNeedsYFlip = false;
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#if defined(GL_PROVIDER_GLX)
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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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mLayerProgram = ShaderProgramFromContentType(aData.mSurface->GetContentType());
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MakeTextureIfNeeded(gl(), mUploadTexture);
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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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mGLContext = aData.mGLContext;
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NS_ASSERTION(mGLContext->IsOffscreen(), "Canvas GLContext must be offscreen.");
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mIsGLAlphaPremult = aData.mIsGLAlphaPremult;
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mNeedsYFlip = true;
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// [OGL Layers, MTC] WebGL layer init.
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GLScreenBuffer* screen = mGLContext->Screen();
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SurfaceStreamType streamType =
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SurfaceStream::ChooseGLStreamType(SurfaceStream::MainThread,
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screen->PreserveBuffer());
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SurfaceFactory_GL* factory = nullptr;
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if (!mForceReadback) {
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factory = new SurfaceFactory_GLTexture(mGLContext, gl(), screen->Caps());
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}
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if (factory) {
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screen->Morph(factory, streamType);
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}
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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 = 0;
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gl()->fGetIntegerv(LOCAL_GL_MAX_TEXTURE_SIZE, &texSize);
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MOZ_ASSERT(texSize != 0);
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if (mBounds.width > (2 + texSize) || mBounds.height > (2 + texSize)) {
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mDelayedUpdates = true;
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MakeTextureIfNeeded(gl(), mUploadTexture);
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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 || mDrawTarget,
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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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/**
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* Following UpdateSurface(), mTexture on context this->gl() should contain the data we want,
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* unless mDelayedUpdates is true because of a too-large surface.
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*/
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void
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CanvasLayerOGL::UpdateSurface()
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{
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if (!IsDirty())
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return;
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Painted();
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if (mDestroyed || mDelayedUpdates) {
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return;
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}
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#if defined(GL_PROVIDER_GLX)
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if (mPixmap) {
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return;
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}
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#endif
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gfxASurface* updatedSurface = nullptr;
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gfxImageSurface* temporarySurface = nullptr;
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bool nothingToShow = false;
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if (mGLContext) {
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SharedSurface* surf = mGLContext->RequestFrame();
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if (surf) {
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mLayerProgram = surf->HasAlpha() ? RGBALayerProgramType
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: RGBXLayerProgramType;
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switch (surf->Type()) {
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case SharedSurfaceType::Basic: {
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SharedSurface_Basic* readbackSurf = SharedSurface_Basic::Cast(surf);
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updatedSurface = readbackSurf->GetData();
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break;
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}
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case SharedSurfaceType::GLTextureShare: {
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SharedSurface_GLTexture* textureSurf = SharedSurface_GLTexture::Cast(surf);
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mTexture = textureSurf->Texture();
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break;
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}
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#ifdef XP_MACOSX
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case SharedSurfaceType::IOSurface: {
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SharedSurface_IOSurface *ioSurf = SharedSurface_IOSurface::Cast(surf);
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mTexture = ioSurf->Texture();
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mTextureTarget = ioSurf->TextureTarget();
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mLayerProgram = ioSurf->HasAlpha() ? RGBARectLayerProgramType : RGBXRectLayerProgramType;
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break;
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}
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#endif
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default:
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MOZ_CRASH("Unacceptable SharedSurface type.");
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}
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} else {
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nothingToShow = true;
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}
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} else if (mCanvasSurface) {
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#ifdef XP_MACOSX
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if (mDrawTarget && mDrawTarget->GetNativeSurface(gfx::NATIVE_SURFACE_CGCONTEXT_ACCELERATED)) {
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if (!mTexture) {
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mTexture = MakeIOSurfaceTexture((CGContextRef)mDrawTarget->GetNativeSurface(
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gfx::NATIVE_SURFACE_CGCONTEXT_ACCELERATED),
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gl());
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mTextureTarget = LOCAL_GL_TEXTURE_RECTANGLE_ARB;
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mLayerProgram = RGBARectLayerProgramType;
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}
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mDrawTarget->Flush();
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return;
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}
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#endif
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updatedSurface = mCanvasSurface;
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} else {
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MOZ_CRASH("Unhandled canvas layer type.");
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}
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if (updatedSurface) {
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mOGLManager->MakeCurrent();
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gfx::SurfaceFormat format =
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gl()->UploadSurfaceToTexture(updatedSurface,
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mBounds,
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mUploadTexture,
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true,//false,
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nsIntPoint(0, 0));
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mLayerProgram = ShaderProgramFromSurfaceFormat(format);
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mTexture = mUploadTexture;
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if (temporarySurface)
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delete temporarySurface;
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}
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MOZ_ASSERT(mTexture || nothingToShow);
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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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FirePreTransactionCallback();
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UpdateSurface();
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if (mOGLManager->CompositingDisabled()) {
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return;
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}
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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(mTextureTarget, mTexture);
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}
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ShaderProgramOGL *program = nullptr;
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nsIntRect drawRect = mBounds;
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if (mDelayedUpdates) {
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NS_ABORT_IF_FALSE(mCanvasSurface || mDrawTarget, "WebGL canvases should always be using full texture upload");
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drawRect.IntersectRect(drawRect, GetEffectiveVisibleRegion().GetBounds());
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gfx::SurfaceFormat format =
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gl()->UploadSurfaceToTexture(mCanvasSurface,
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nsIntRect(0, 0, drawRect.width, drawRect.height),
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mUploadTexture,
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true,
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drawRect.TopLeft());
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mLayerProgram = ShaderProgramFromSurfaceFormat(format);
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mTexture = mUploadTexture;
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}
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if (!program) {
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program = mOGLManager->GetProgram(mLayerProgram, GetMaskLayer());
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}
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#if defined(GL_PROVIDER_GLX)
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if (mPixmap && !mDelayedUpdates) {
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sDefGLXLib.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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if (mLayerProgram == RGBARectLayerProgramType ||
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mLayerProgram == RGBXRectLayerProgramType) {
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// This is used by IOSurface that use 0,0...w,h coordinate rather then 0,0..1,1.
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program->SetTexCoordMultiplier(mBounds.width, mBounds.height);
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}
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program->SetLayerQuadRect(drawRect);
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program->SetLayerTransform(GetEffectiveTransform());
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program->SetTextureTransform(gfx3DMatrix());
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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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program->LoadMask(GetMaskLayer());
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if (gl()->CanUploadNonPowerOfTwo()) {
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mOGLManager->BindAndDrawQuad(program, mNeedsYFlip ? true : false);
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} else {
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mOGLManager->BindAndDrawQuadWithTextureRect(program, drawRect, drawRect.Size());
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}
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#if defined(GL_PROVIDER_GLX)
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if (mPixmap && !mDelayedUpdates) {
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sDefGLXLib.ReleaseTexImage(mPixmap);
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}
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#endif
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}
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void
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CanvasLayerOGL::CleanupResources()
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{
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if (mUploadTexture) {
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gl()->MakeCurrent();
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gl()->fDeleteTextures(1, &mUploadTexture);
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mUploadTexture = 0;
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}
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}
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