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gecko/gfx/layers/opengl/CanvasLayerOGL.cpp

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/* -*- 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 "ipc/AutoOpenSurface.h"
#include "mozilla/layers/PLayers.h"
#include "mozilla/layers/ShadowLayers.h"
#include "gfxSharedImageSurface.h"
#include "CanvasLayerOGL.h"
#include "gfxImageSurface.h"
#include "gfxContext.h"
#include "GLContextProvider.h"
#include "gfxPlatform.h"
#ifdef XP_MACOSX
#include "mozilla/gfx/MacIOSurface.h"
#endif
#ifdef XP_WIN
#include "gfxWindowsSurface.h"
#include "WGLLibrary.h"
#endif
#ifdef XP_MACOSX
#include <OpenGL/OpenGL.h>
#endif
#ifdef MOZ_X11
#include "gfxXlibSurface.h"
#endif
using namespace mozilla;
using namespace mozilla::layers;
using namespace mozilla::gl;
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);
}
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 GLContext");
return;
}
mOGLManager->MakeCurrent();
if (aData.mDrawTarget) {
mDrawTarget = aData.mDrawTarget;
mCanvasSurface = gfxPlatform::GetPlatform()->GetThebesSurfaceForDrawTarget(mDrawTarget);
mNeedsYFlip = false;
} else if (aData.mSurface) {
mCanvasSurface = aData.mSurface;
mNeedsYFlip = false;
#if defined(MOZ_X11) && !defined(MOZ_PLATFORM_MAEMO)
if (aData.mSurface->GetType() == gfxASurface::SurfaceTypeXlib) {
gfxXlibSurface *xsurf = static_cast<gfxXlibSurface*>(aData.mSurface);
mPixmap = xsurf->GetGLXPixmap();
if (mPixmap) {
if (aData.mSurface->GetContentType() == gfxASurface::CONTENT_COLOR_ALPHA) {
mLayerProgram = gl::RGBALayerProgramType;
} else {
mLayerProgram = gl::RGBXLayerProgramType;
}
MakeTextureIfNeeded(gl(), mTexture);
}
}
#endif
} else if (aData.mGLContext) {
if (!aData.mGLContext->IsOffscreen()) {
NS_WARNING("CanvasLayerOGL with a non-offscreen GL context given");
return;
}
mCanvasGLContext = aData.mGLContext;
mGLBufferIsPremultiplied = aData.mGLBufferIsPremultiplied;
mNeedsYFlip = mCanvasGLContext->GetOffscreenTexture() != 0;
} 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 = gl()->GetMaxTextureSize();
if (mBounds.width > (2 + texSize) || mBounds.height > (2 + texSize)) {
mDelayedUpdates = true;
MakeTextureIfNeeded(gl(), mTexture);
// 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?");
}
}
#ifdef XP_MACOSX
static GLuint
MakeIOSurfaceTexture(void* aCGIOSurfaceContext, mozilla::gl::GLContext* aGL)
{
GLuint ioSurfaceTexture;
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,
LOCAL_GL_RGBA, LOCAL_GL_BGRA,
LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV, 0);
aGL->fBindTexture(LOCAL_GL_TEXTURE_RECTANGLE_ARB, 0);
return ioSurfaceTexture;
}
#else
static GLuint
MakeIOSurfaceTexture(void* aCGIOSurfaceContext, mozilla::gl::GLContext* aGL)
{
NS_RUNTIMEABORT("Not implemented");
return 0;
}
#endif
/**
* 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 (!mDirty)
return;
mDirty = false;
if (mDestroyed || mDelayedUpdates) {
return;
}
#if defined(MOZ_X11) && !defined(MOZ_PLATFORM_MAEMO)
if (mPixmap) {
return;
}
#endif
if (mCanvasGLContext) {
mCanvasGLContext->MakeCurrent();
}
if (mCanvasGLContext &&
!mForceReadback &&
mCanvasGLContext->GetContextType() == gl()->GetContextType())
{
DiscardTempSurface();
// Can texture share, just make sure it's resolved first
mCanvasGLContext->GuaranteeResolve();
if (gl()->BindOffscreenNeedsTexture(mCanvasGLContext) &&
mTexture == 0)
{
mOGLManager->MakeCurrent();
MakeTextureIfNeeded(gl(), mTexture);
}
return;
}
nsRefPtr<gfxASurface> updatedAreaSurface;
if (mCanvasGLContext) {
gfxIntSize size(mBounds.width, mBounds.height);
nsRefPtr<gfxImageSurface> updatedAreaImageSurface =
GetTempSurface(size, gfxASurface::ImageFormatARGB32);
updatedAreaImageSurface->Flush();
mCanvasGLContext->ReadScreenIntoImageSurface(updatedAreaImageSurface);
updatedAreaImageSurface->MarkDirty();
updatedAreaSurface = updatedAreaImageSurface;
} else if (mCanvasSurface) {
updatedAreaSurface = mCanvasSurface;
} else {
MOZ_NOT_REACHED("Unhandled canvas layer type.");
return;
}
mOGLManager->MakeCurrent();
mLayerProgram = gl()->UploadSurfaceToTexture(updatedAreaSurface,
mBounds,
mTexture,
false,
nsIntPoint(0, 0));
}
void
CanvasLayerOGL::RenderLayer(int aPreviousDestination,
const nsIntPoint& aOffset)
{
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;
bool useGLContext = mCanvasGLContext &&
!mForceReadback &&
mCanvasGLContext->GetContextType() == gl()->GetContextType();
nsIntRect drawRect = mBounds;
if (useGLContext) {
gl()->BindTex2DOffscreen(mCanvasGLContext);
program = mOGLManager->GetBasicLayerProgram(CanUseOpaqueSurface(),
true,
GetMaskLayer() ? Mask2d : MaskNone);
} else if (mDelayedUpdates) {
NS_ABORT_IF_FALSE(mCanvasSurface || mDrawTarget, "WebGL canvases should always be using full texture upload");
drawRect.IntersectRect(drawRect, GetEffectiveVisibleRegion().GetBounds());
mLayerProgram =
gl()->UploadSurfaceToTexture(mCanvasSurface,
nsIntRect(0, 0, drawRect.width, drawRect.height),
mTexture,
true,
drawRect.TopLeft());
}
if (!program) {
program = mOGLManager->GetProgram(mLayerProgram, GetMaskLayer());
}
#if defined(MOZ_X11) && !defined(MOZ_PLATFORM_MAEMO)
if (mPixmap && !mDelayedUpdates) {
sDefGLXLib.BindTexImage(mPixmap);
}
#endif
gl()->ApplyFilterToBoundTexture(mFilter);
program->Activate();
if (mLayerProgram == gl::RGBARectLayerProgramType) {
// This is used by IOSurface that use 0,0...w,h coordinate rather then 0,0..1,1.
program->SetTexCoordMultiplier(mDrawTarget->GetSize().width, mDrawTarget->GetSize().height);
}
program->SetLayerQuadRect(drawRect);
program->SetLayerTransform(GetEffectiveTransform());
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(MOZ_X11) && !defined(MOZ_PLATFORM_MAEMO)
if (mPixmap && !mDelayedUpdates) {
sDefGLXLib.ReleaseTexImage(mPixmap);
}
#endif
if (useGLContext) {
gl()->UnbindTex2DOffscreen(mCanvasGLContext);
}
}
void
CanvasLayerOGL::CleanupResources()
{
if (mTexture) {
gl()->MakeCurrent();
gl()->fDeleteTextures(1, &mTexture);
}
}
static bool
IsValidSharedTexDescriptor(const SurfaceDescriptor& aDescriptor)
{
return aDescriptor.type() == SurfaceDescriptor::TSharedTextureDescriptor;
}
ShadowCanvasLayerOGL::ShadowCanvasLayerOGL(LayerManagerOGL* aManager)
: ShadowCanvasLayer(aManager, nullptr)
, LayerOGL(aManager)
, mNeedsYFlip(false)
, mTexture(0)
{
mImplData = static_cast<LayerOGL*>(this);
}
ShadowCanvasLayerOGL::~ShadowCanvasLayerOGL()
{}
void
ShadowCanvasLayerOGL::Initialize(const Data& aData)
{
NS_RUNTIMEABORT("Incompatibe surface type");
}
void
ShadowCanvasLayerOGL::Init(const CanvasSurface& aNewFront, bool needYFlip)
{
AutoOpenSurface autoSurf(OPEN_READ_ONLY, aNewFront);
mNeedsYFlip = needYFlip;
mTexImage = gl()->CreateTextureImage(autoSurf.Size(),
autoSurf.ContentType(),
LOCAL_GL_CLAMP_TO_EDGE,
mNeedsYFlip ? TextureImage::NeedsYFlip : TextureImage::NoFlags);
}
void
ShadowCanvasLayerOGL::Swap(const CanvasSurface& aNewFront,
bool needYFlip,
CanvasSurface* aNewBack)
{
if (mDestroyed) {
*aNewBack = aNewFront;
return;
}
if (nsRefPtr<TextureImage> texImage =
ShadowLayerManager::OpenDescriptorForDirectTexturing(
gl(), aNewFront.get_SurfaceDescriptor(), LOCAL_GL_CLAMP_TO_EDGE)) {
if (mTexImage &&
(mTexImage->GetSize() != texImage->GetSize() ||
mTexImage->GetContentType() != texImage->GetContentType())) {
mTexImage = nullptr;
DestroyFrontBuffer();
}
mTexImage = texImage;
*aNewBack = IsSurfaceDescriptorValid(mFrontBufferDescriptor) ?
CanvasSurface(mFrontBufferDescriptor) : CanvasSurface(null_t());
mFrontBufferDescriptor = aNewFront;
mNeedsYFlip = needYFlip;
} else if (IsValidSharedTexDescriptor(aNewFront)) {
MakeTextureIfNeeded(gl(), mTexture);
if (!IsValidSharedTexDescriptor(mFrontBufferDescriptor)) {
mFrontBufferDescriptor = SharedTextureDescriptor(TextureImage::ThreadShared, 0, nsIntSize(0, 0), false);
}
*aNewBack = mFrontBufferDescriptor;
mFrontBufferDescriptor = aNewFront;
mNeedsYFlip = needYFlip;
} else {
AutoOpenSurface autoSurf(OPEN_READ_ONLY, aNewFront);
gfxIntSize sz = autoSurf.Size();
if (!mTexImage || mTexImage->GetSize() != sz ||
mTexImage->GetContentType() != autoSurf.ContentType()) {
Init(aNewFront, needYFlip);
}
nsIntRegion updateRegion(nsIntRect(0, 0, sz.width, sz.height));
mTexImage->DirectUpdate(autoSurf.Get(), updateRegion);
*aNewBack = aNewFront;
}
}
void
ShadowCanvasLayerOGL::DestroyFrontBuffer()
{
mTexImage = nullptr;
if (mTexture) {
gl()->MakeCurrent();
gl()->fDeleteTextures(1, &mTexture);
}
if (IsValidSharedTexDescriptor(mFrontBufferDescriptor)) {
SharedTextureDescriptor texDescriptor = mFrontBufferDescriptor.get_SharedTextureDescriptor();
gl()->ReleaseSharedHandle(texDescriptor.shareType(), texDescriptor.handle());
mFrontBufferDescriptor = SurfaceDescriptor();
}
}
void
ShadowCanvasLayerOGL::Disconnect()
{
Destroy();
}
void
ShadowCanvasLayerOGL::Destroy()
{
if (!mDestroyed) {
mDestroyed = true;
DestroyFrontBuffer();
}
}
Layer*
ShadowCanvasLayerOGL::GetLayer()
{
return this;
}
void
ShadowCanvasLayerOGL::RenderLayer(int aPreviousFrameBuffer,
const nsIntPoint& aOffset)
{
if (!mTexImage && !IsValidSharedTexDescriptor(mFrontBufferDescriptor)) {
return;
}
if (mOGLManager->CompositingDisabled()) {
return;
}
mOGLManager->MakeCurrent();
gfx3DMatrix effectiveTransform = GetEffectiveTransform();
gfxPattern::GraphicsFilter filter = mFilter;
#ifdef ANDROID
// Bug 691354
// Using the LINEAR filter we get unexplained artifacts.
// Use NEAREST when no scaling is required.
gfxMatrix matrix;
bool is2D = GetEffectiveTransform().Is2D(&matrix);
if (is2D && !matrix.HasNonTranslationOrFlip()) {
filter = gfxPattern::FILTER_NEAREST;
}
#endif
ShaderProgramOGL *program;
if (IsValidSharedTexDescriptor(mFrontBufferDescriptor)) {
program = mOGLManager->GetBasicLayerProgram(CanUseOpaqueSurface(),
true,
GetMaskLayer() ? Mask2d : MaskNone);
} else {
program = mOGLManager->GetProgram(mTexImage->GetShaderProgramType(),
GetMaskLayer());
}
program->Activate();
program->SetLayerTransform(effectiveTransform);
program->SetLayerOpacity(GetEffectiveOpacity());
program->SetRenderOffset(aOffset);
program->SetTextureUnit(0);
program->LoadMask(GetMaskLayer());
if (IsValidSharedTexDescriptor(mFrontBufferDescriptor)) {
// Shared texture handle rendering path, single texture rendering
SharedTextureDescriptor texDescriptor = mFrontBufferDescriptor.get_SharedTextureDescriptor();
gl()->fActiveTexture(LOCAL_GL_TEXTURE0);
gl()->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
if (!gl()->AttachSharedHandle(texDescriptor.shareType(), texDescriptor.handle())) {
NS_ERROR("Failed to attach shared texture handle");
return;
}
gl()->ApplyFilterToBoundTexture(filter);
program->SetLayerQuadRect(nsIntRect(nsIntPoint(0, 0), texDescriptor.size()));
mOGLManager->BindAndDrawQuad(program, mNeedsYFlip);
gl()->DetachSharedHandle(texDescriptor.shareType(), texDescriptor.handle());
gl()->fBindTexture(LOCAL_GL_TEXTURE_2D, 0);
} else {
// Tiled texture image rendering path
mTexImage->SetFilter(filter);
mTexImage->BeginTileIteration();
if (gl()->CanUploadNonPowerOfTwo()) {
do {
TextureImage::ScopedBindTextureAndApplyFilter texBind(mTexImage, LOCAL_GL_TEXTURE0);
program->SetLayerQuadRect(mTexImage->GetTileRect());
mOGLManager->BindAndDrawQuad(program, mNeedsYFlip); // FIXME flip order of tiles?
} while (mTexImage->NextTile());
} else {
do {
TextureImage::ScopedBindTextureAndApplyFilter texBind(mTexImage, LOCAL_GL_TEXTURE0);
program->SetLayerQuadRect(mTexImage->GetTileRect());
// We can't use BindAndDrawQuad because that always uploads the whole texture from 0.0f -> 1.0f
// in x and y. We use BindAndDrawQuadWithTextureRect to actually draw a subrect of the texture
// We need to reset the origin to 0,0 from the tile rect because the tile originates at 0,0 in the
// actual texture, even though its origin in the composed (tiled) texture is not 0,0
// FIXME: we need to handle mNeedsYFlip, Bug #728625
mOGLManager->BindAndDrawQuadWithTextureRect(program,
nsIntRect(0, 0, mTexImage->GetTileRect().width,
mTexImage->GetTileRect().height),
mTexImage->GetTileRect().Size(),
mTexImage->GetWrapMode(),
mNeedsYFlip);
} while (mTexImage->NextTile());
}
}
}
void
ShadowCanvasLayerOGL::CleanupResources()
{
DestroyFrontBuffer();
}
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