gecko/gfx/layers/opengl/CanvasLayerOGL.cpp

364 lines
12 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "CanvasLayerOGL.h"
#include "GLContext.h" // for GLContext
#include "GLScreenBuffer.h" // for GLScreenBuffer
#include "SharedSurface.h" // for SharedSurface
#include "SharedSurfaceGL.h" // for SharedSurface_Basic, etc
#include "SurfaceStream.h" // for SurfaceStream, etc
#include "SurfaceTypes.h" // for SharedSurfaceType, etc
#include "gfx3DMatrix.h" // for gfx3DMatrix
#include "gfxImageSurface.h" // for gfxImageSurface
#include "gfxPlatform.h" // for gfxPlatform
#include "mozilla/Assertions.h" // for MOZ_ASSERT, etc
#include "mozilla/gfx/Types.h" // for SurfaceFormat, etc
#include "nsDebug.h" // for NS_ABORT_IF_FALSE, etc
#include "nsPoint.h" // for nsIntPoint
#include "nsRect.h" // for nsIntRect
#include "nsRegion.h" // for nsIntRegion
#include "nsSize.h" // for nsIntSize
#include "LayerManagerOGL.h" // for LayerOGL::GLContext, etc
#ifdef XP_MACOSX
#include "mozilla/gfx/MacIOSurface.h"
#include "SharedSurfaceIO.h"
#endif
#ifdef XP_WIN
#include "gfxWindowsSurface.h"
#include "WGLLibrary.h"
#endif
#ifdef XP_MACOSX
#include <OpenGL/OpenGL.h>
#endif
#ifdef GL_PROVIDER_GLX
#include "GLXLibrary.h" // for GLXLibrary, sDefGLXLib
#include "gfxXlibSurface.h"
#endif
using namespace mozilla;
using namespace mozilla::layers;
using namespace mozilla::gl;
using namespace mozilla::gfx;
static void
MakeTextureIfNeeded(GLContext* gl, GLuint& aTexture)
{
if (aTexture != 0)
return;
gl->fGenTextures(1, &aTexture);
gl->fActiveTexture(LOCAL_GL_TEXTURE0);
gl->fBindTexture(LOCAL_GL_TEXTURE_2D, aTexture);
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_LINEAR);
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_LINEAR);
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE);
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE);
}
#ifdef XP_MACOSX
static GLuint
MakeIOSurfaceTexture(void* aCGIOSurfaceContext, mozilla::gl::GLContext* aGL)
{
GLuint ioSurfaceTexture;
aGL->MakeCurrent();
aGL->fGenTextures(1, &ioSurfaceTexture);
aGL->fActiveTexture(LOCAL_GL_TEXTURE0);
aGL->fBindTexture(LOCAL_GL_TEXTURE_RECTANGLE_ARB, ioSurfaceTexture);
aGL->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB, LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_LINEAR);
aGL->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB, LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_LINEAR);
aGL->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE);
aGL->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE);
RefPtr<MacIOSurface> ioSurface = MacIOSurface::IOSurfaceContextGetSurface((CGContextRef)aCGIOSurfaceContext);
void *nativeCtx = aGL->GetNativeData(GLContext::NativeGLContext);
ioSurface->CGLTexImageIOSurface2D(nativeCtx);
aGL->fBindTexture(LOCAL_GL_TEXTURE_RECTANGLE_ARB, 0);
return ioSurfaceTexture;
}
#endif
void
CanvasLayerOGL::Destroy()
{
if (!mDestroyed) {
CleanupResources();
mDestroyed = true;
}
}
void
CanvasLayerOGL::Initialize(const Data& aData)
{
NS_ASSERTION(mCanvasSurface == nullptr, "BasicCanvasLayer::Initialize called twice!");
if (aData.mGLContext != nullptr &&
aData.mSurface != nullptr)
{
NS_WARNING("CanvasLayerOGL can't have both surface and WebGLContext");
return;
}
mOGLManager->MakeCurrent();
if (aData.mDrawTarget &&
aData.mDrawTarget->GetNativeSurface(gfx::NATIVE_SURFACE_CGCONTEXT_ACCELERATED)) {
mDrawTarget = aData.mDrawTarget;
mNeedsYFlip = false;
mBounds.SetRect(0, 0, aData.mSize.width, aData.mSize.height);
return;
} else if (aData.mDrawTarget) {
mDrawTarget = aData.mDrawTarget;
mCanvasSurface = gfxPlatform::GetPlatform()->CreateThebesSurfaceAliasForDrawTarget_hack(mDrawTarget);
mNeedsYFlip = false;
} else if (aData.mSurface) {
mCanvasSurface = aData.mSurface;
mNeedsYFlip = false;
#if defined(GL_PROVIDER_GLX)
if (aData.mSurface->GetType() == gfxASurface::SurfaceTypeXlib) {
gfxXlibSurface *xsurf = static_cast<gfxXlibSurface*>(aData.mSurface);
mPixmap = xsurf->GetGLXPixmap();
if (mPixmap) {
mLayerProgram = ShaderProgramFromContentType(aData.mSurface->GetContentType());
MakeTextureIfNeeded(gl(), mUploadTexture);
}
}
#endif
} else if (aData.mGLContext) {
mGLContext = aData.mGLContext;
NS_ASSERTION(mGLContext->IsOffscreen(), "Canvas GLContext must be offscreen.");
mIsGLAlphaPremult = aData.mIsGLAlphaPremult;
mNeedsYFlip = true;
// [OGL Layers, MTC] WebGL layer init.
GLScreenBuffer* screen = mGLContext->Screen();
SurfaceStreamType streamType =
SurfaceStream::ChooseGLStreamType(SurfaceStream::MainThread,
screen->PreserveBuffer());
SurfaceFactory_GL* factory = nullptr;
if (!mForceReadback) {
factory = new SurfaceFactory_GLTexture(mGLContext, gl(), screen->Caps());
}
if (factory) {
screen->Morph(factory, streamType);
}
} else {
NS_WARNING("CanvasLayerOGL::Initialize called without surface or GL context!");
return;
}
mBounds.SetRect(0, 0, aData.mSize.width, aData.mSize.height);
// Check the maximum texture size supported by GL. glTexImage2D supports
// images of up to 2 + GL_MAX_TEXTURE_SIZE
GLint texSize = 0;
gl()->fGetIntegerv(LOCAL_GL_MAX_TEXTURE_SIZE, &texSize);
MOZ_ASSERT(texSize != 0);
if (mBounds.width > (2 + texSize) || mBounds.height > (2 + texSize)) {
mDelayedUpdates = true;
MakeTextureIfNeeded(gl(), mUploadTexture);
// This should only ever occur with 2d canvas, WebGL can't already have a texture
// of this size can it?
NS_ABORT_IF_FALSE(mCanvasSurface || mDrawTarget,
"Invalid texture size when WebGL surface already exists at that size?");
}
}
/**
* Following UpdateSurface(), mTexture on context this->gl() should contain the data we want,
* unless mDelayedUpdates is true because of a too-large surface.
*/
void
CanvasLayerOGL::UpdateSurface()
{
if (!IsDirty())
return;
Painted();
if (mDestroyed || mDelayedUpdates) {
return;
}
#if defined(GL_PROVIDER_GLX)
if (mPixmap) {
return;
}
#endif
gfxASurface* updatedSurface = nullptr;
gfxImageSurface* temporarySurface = nullptr;
bool nothingToShow = false;
if (mGLContext) {
SharedSurface* surf = mGLContext->RequestFrame();
if (surf) {
mLayerProgram = surf->HasAlpha() ? RGBALayerProgramType
: RGBXLayerProgramType;
switch (surf->Type()) {
case SharedSurfaceType::Basic: {
SharedSurface_Basic* readbackSurf = SharedSurface_Basic::Cast(surf);
updatedSurface = readbackSurf->GetData();
break;
}
case SharedSurfaceType::GLTextureShare: {
SharedSurface_GLTexture* textureSurf = SharedSurface_GLTexture::Cast(surf);
mTexture = textureSurf->Texture();
break;
}
#ifdef XP_MACOSX
case SharedSurfaceType::IOSurface: {
SharedSurface_IOSurface *ioSurf = SharedSurface_IOSurface::Cast(surf);
mTexture = ioSurf->Texture();
mTextureTarget = ioSurf->TextureTarget();
mLayerProgram = ioSurf->HasAlpha() ? RGBARectLayerProgramType : RGBXRectLayerProgramType;
break;
}
#endif
default:
MOZ_CRASH("Unacceptable SharedSurface type.");
}
} else {
nothingToShow = true;
}
} else if (mCanvasSurface) {
#ifdef XP_MACOSX
if (mDrawTarget && mDrawTarget->GetNativeSurface(gfx::NATIVE_SURFACE_CGCONTEXT_ACCELERATED)) {
if (!mTexture) {
mTexture = MakeIOSurfaceTexture((CGContextRef)mDrawTarget->GetNativeSurface(
gfx::NATIVE_SURFACE_CGCONTEXT_ACCELERATED),
gl());
mTextureTarget = LOCAL_GL_TEXTURE_RECTANGLE_ARB;
mLayerProgram = RGBARectLayerProgramType;
}
mDrawTarget->Flush();
return;
}
#endif
updatedSurface = mCanvasSurface;
} else {
MOZ_CRASH("Unhandled canvas layer type.");
}
if (updatedSurface) {
mOGLManager->MakeCurrent();
gfx::SurfaceFormat format =
gl()->UploadSurfaceToTexture(updatedSurface,
mBounds,
mUploadTexture,
true,//false,
nsIntPoint(0, 0));
mLayerProgram = ShaderProgramFromSurfaceFormat(format);
mTexture = mUploadTexture;
if (temporarySurface)
delete temporarySurface;
}
MOZ_ASSERT(mTexture || nothingToShow);
}
void
CanvasLayerOGL::RenderLayer(int aPreviousDestination,
const nsIntPoint& aOffset)
{
FirePreTransactionCallback();
UpdateSurface();
if (mOGLManager->CompositingDisabled()) {
return;
}
FireDidTransactionCallback();
mOGLManager->MakeCurrent();
// XXX We're going to need a different program depending on if
// mGLBufferIsPremultiplied is TRUE or not. The RGBLayerProgram
// assumes that it's true.
gl()->fActiveTexture(LOCAL_GL_TEXTURE0);
if (mTexture) {
gl()->fBindTexture(mTextureTarget, mTexture);
}
ShaderProgramOGL *program = nullptr;
nsIntRect drawRect = mBounds;
if (mDelayedUpdates) {
NS_ABORT_IF_FALSE(mCanvasSurface || mDrawTarget, "WebGL canvases should always be using full texture upload");
drawRect.IntersectRect(drawRect, GetEffectiveVisibleRegion().GetBounds());
gfx::SurfaceFormat format =
gl()->UploadSurfaceToTexture(mCanvasSurface,
nsIntRect(0, 0, drawRect.width, drawRect.height),
mUploadTexture,
true,
drawRect.TopLeft());
mLayerProgram = ShaderProgramFromSurfaceFormat(format);
mTexture = mUploadTexture;
}
if (!program) {
program = mOGLManager->GetProgram(mLayerProgram, GetMaskLayer());
}
#if defined(GL_PROVIDER_GLX)
if (mPixmap && !mDelayedUpdates) {
sDefGLXLib.BindTexImage(mPixmap);
}
#endif
gl()->ApplyFilterToBoundTexture(mFilter);
program->Activate();
if (mLayerProgram == RGBARectLayerProgramType ||
mLayerProgram == RGBXRectLayerProgramType) {
// This is used by IOSurface that use 0,0...w,h coordinate rather then 0,0..1,1.
program->SetTexCoordMultiplier(mBounds.width, mBounds.height);
}
program->SetLayerQuadRect(drawRect);
program->SetLayerTransform(GetEffectiveTransform());
program->SetTextureTransform(gfx3DMatrix());
program->SetLayerOpacity(GetEffectiveOpacity());
program->SetRenderOffset(aOffset);
program->SetTextureUnit(0);
program->LoadMask(GetMaskLayer());
if (gl()->CanUploadNonPowerOfTwo()) {
mOGLManager->BindAndDrawQuad(program, mNeedsYFlip ? true : false);
} else {
mOGLManager->BindAndDrawQuadWithTextureRect(program, drawRect, drawRect.Size());
}
#if defined(GL_PROVIDER_GLX)
if (mPixmap && !mDelayedUpdates) {
sDefGLXLib.ReleaseTexImage(mPixmap);
}
#endif
}
void
CanvasLayerOGL::CleanupResources()
{
if (mUploadTexture) {
gl()->MakeCurrent();
gl()->fDeleteTextures(1, &mUploadTexture);
mUploadTexture = 0;
}
}