mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-11 12:25:53 +00:00
df8b1437b6
Backed out changeset 65ad9d8860d6 (bug 877115) Backed out changeset bf8095c168fb (bug 877115) Backed out changeset 290ad5863615 (bug 877115) Backed out changeset 4488ec28910e (bug 877115) Backed out changeset 45f8859c6fd6 (bug 877115) Backed out changeset 111cc426fa9e (bug 877115)
692 lines
17 KiB
C++
692 lines
17 KiB
C++
/* -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40; -*- */
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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 "GLScreenBuffer.h"
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#include <cstring>
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#include "gfxImageSurface.h"
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#include "GLContext.h"
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#include "GLBlitHelper.h"
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#include "SharedSurfaceGL.h"
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#include "SurfaceStream.h"
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#ifdef MOZ_WIDGET_GONK
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#include "SharedSurfaceGralloc.h"
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#include "nsXULAppAPI.h"
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#endif
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#ifdef XP_MACOSX
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#include "SharedSurfaceIO.h"
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#endif
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#include "ScopedGLHelpers.h"
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using namespace mozilla::gfx;
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namespace mozilla {
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namespace gl {
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GLScreenBuffer*
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GLScreenBuffer::Create(GLContext* gl,
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const gfxIntSize& size,
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const SurfaceCaps& caps)
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{
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if (caps.antialias &&
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!gl->IsSupported(GLFeature::framebuffer_multisample))
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{
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return nullptr;
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}
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SurfaceFactory_GL* factory = nullptr;
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#ifdef MOZ_WIDGET_GONK
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/* On B2G, we want a Gralloc factory, and we want one right at the start */
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if (!factory &&
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XRE_GetProcessType() != GeckoProcessType_Default)
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{
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factory = new SurfaceFactory_Gralloc(gl, caps);
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}
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#endif
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#ifdef XP_MACOSX
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/* On OSX, we want an IOSurface factory, and we want one right at the start */
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if (!factory)
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{
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factory = new SurfaceFactory_IOSurface(gl, caps);
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}
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#endif
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if (!factory)
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factory = new SurfaceFactory_Basic(gl, caps);
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SurfaceStream* stream = SurfaceStream::CreateForType(
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SurfaceStream::ChooseGLStreamType(SurfaceStream::MainThread,
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caps.preserve),
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gl,
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nullptr);
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return new GLScreenBuffer(gl, caps, factory, stream);
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}
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GLScreenBuffer::~GLScreenBuffer()
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{
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delete mStream;
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delete mDraw;
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delete mRead;
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// bug 914823: it is crucial to destroy the Factory _after_ we destroy
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// the SharedSurfaces around here! Reason: the shared surfaces will want
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// to ask the Allocator (e.g. the ClientLayerManager) to destroy their
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// buffers, but that Allocator may be kept alive by the Factory,
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// as it currently the case in SurfaceFactory_Gralloc holding a nsRefPtr
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// to the Allocator!
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delete mFactory;
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}
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void
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GLScreenBuffer::BindAsFramebuffer(GLContext* const gl, GLenum target) const
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{
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GLuint drawFB = DrawFB();
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GLuint readFB = ReadFB();
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if (!gl->IsSupported(GLFeature::framebuffer_blit)) {
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MOZ_ASSERT(drawFB == readFB);
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gl->raw_fBindFramebuffer(target, readFB);
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return;
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}
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switch (target) {
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case LOCAL_GL_FRAMEBUFFER:
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gl->raw_fBindFramebuffer(LOCAL_GL_DRAW_FRAMEBUFFER_EXT, drawFB);
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gl->raw_fBindFramebuffer(LOCAL_GL_READ_FRAMEBUFFER_EXT, readFB);
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break;
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case LOCAL_GL_DRAW_FRAMEBUFFER_EXT:
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if (!gl->IsSupported(GLFeature::framebuffer_blit))
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NS_WARNING("DRAW_FRAMEBUFFER requested but unavailable.");
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gl->raw_fBindFramebuffer(LOCAL_GL_DRAW_FRAMEBUFFER_EXT, drawFB);
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break;
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case LOCAL_GL_READ_FRAMEBUFFER_EXT:
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if (!gl->IsSupported(GLFeature::framebuffer_blit))
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NS_WARNING("READ_FRAMEBUFFER requested but unavailable.");
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gl->raw_fBindFramebuffer(LOCAL_GL_READ_FRAMEBUFFER_EXT, readFB);
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break;
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default:
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MOZ_CRASH("Bad `target` for BindFramebuffer.");
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}
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}
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void
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GLScreenBuffer::BindFB(GLuint fb)
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{
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GLuint drawFB = DrawFB();
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GLuint readFB = ReadFB();
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mUserDrawFB = fb;
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mUserReadFB = fb;
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mInternalDrawFB = (fb == 0) ? drawFB : fb;
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mInternalReadFB = (fb == 0) ? readFB : fb;
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if (mInternalDrawFB == mInternalReadFB) {
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mGL->raw_fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, mInternalDrawFB);
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} else {
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MOZ_ASSERT(mGL->IsSupported(GLFeature::framebuffer_blit));
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mGL->raw_fBindFramebuffer(LOCAL_GL_DRAW_FRAMEBUFFER_EXT, mInternalDrawFB);
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mGL->raw_fBindFramebuffer(LOCAL_GL_READ_FRAMEBUFFER_EXT, mInternalReadFB);
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}
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#ifdef DEBUG
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mInInternalMode_DrawFB = false;
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mInInternalMode_ReadFB = false;
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#endif
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}
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void
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GLScreenBuffer::BindDrawFB(GLuint fb)
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{
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if (!mGL->IsSupported(GLFeature::framebuffer_blit)) {
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NS_WARNING("DRAW_FRAMEBUFFER requested, but unsupported.");
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mGL->raw_fBindFramebuffer(LOCAL_GL_DRAW_FRAMEBUFFER_EXT, fb);
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} else {
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GLuint drawFB = DrawFB();
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mUserDrawFB = fb;
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mInternalDrawFB = (fb == 0) ? drawFB : fb;
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mGL->raw_fBindFramebuffer(LOCAL_GL_DRAW_FRAMEBUFFER_EXT, mInternalDrawFB);
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}
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#ifdef DEBUG
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mInInternalMode_DrawFB = false;
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#endif
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}
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void
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GLScreenBuffer::BindReadFB(GLuint fb)
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{
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if (!mGL->IsSupported(GLFeature::framebuffer_blit)) {
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NS_WARNING("READ_FRAMEBUFFER requested, but unsupported.");
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mGL->raw_fBindFramebuffer(LOCAL_GL_READ_FRAMEBUFFER_EXT, fb);
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} else {
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GLuint readFB = ReadFB();
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mUserReadFB = fb;
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mInternalReadFB = (fb == 0) ? readFB : fb;
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mGL->raw_fBindFramebuffer(LOCAL_GL_READ_FRAMEBUFFER_EXT, mInternalReadFB);
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}
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#ifdef DEBUG
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mInInternalMode_ReadFB = false;
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#endif
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}
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void
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GLScreenBuffer::BindDrawFB_Internal(GLuint fb)
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{
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mInternalDrawFB = mUserDrawFB = fb;
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mGL->raw_fBindFramebuffer(LOCAL_GL_DRAW_FRAMEBUFFER_EXT, mInternalDrawFB);
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#ifdef DEBUG
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mInInternalMode_DrawFB = true;
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#endif
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}
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void
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GLScreenBuffer::BindReadFB_Internal(GLuint fb)
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{
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mInternalReadFB = mUserReadFB = fb;
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mGL->raw_fBindFramebuffer(LOCAL_GL_READ_FRAMEBUFFER_EXT, mInternalReadFB);
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#ifdef DEBUG
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mInInternalMode_ReadFB = true;
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#endif
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}
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GLuint
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GLScreenBuffer::GetDrawFB() const
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{
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#ifdef DEBUG
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MOZ_ASSERT(mGL->IsCurrent());
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MOZ_ASSERT(!mInInternalMode_DrawFB);
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// Don't need a branch here, because:
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// LOCAL_GL_DRAW_FRAMEBUFFER_BINDING_EXT == LOCAL_GL_FRAMEBUFFER_BINDING == 0x8CA6
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// We use raw_ here because this is debug code and we need to see what
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// the driver thinks.
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GLuint actual = 0;
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mGL->raw_fGetIntegerv(LOCAL_GL_DRAW_FRAMEBUFFER_BINDING_EXT, (GLint*)&actual);
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GLuint predicted = mInternalDrawFB;
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if (predicted != actual) {
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printf_stderr("Misprediction: Bound draw FB predicted: %d. Was: %d.\n",
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predicted, actual);
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MOZ_ASSERT(false, "Draw FB binding misprediction!");
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}
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#endif
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return mUserDrawFB;
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}
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GLuint
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GLScreenBuffer::GetReadFB() const
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{
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#ifdef DEBUG
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MOZ_ASSERT(mGL->IsCurrent());
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MOZ_ASSERT(!mInInternalMode_ReadFB);
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// We use raw_ here because this is debug code and we need to see what
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// the driver thinks.
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GLuint actual = 0;
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if (mGL->IsSupported(GLFeature::framebuffer_blit))
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mGL->raw_fGetIntegerv(LOCAL_GL_READ_FRAMEBUFFER_BINDING_EXT, (GLint*)&actual);
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else
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mGL->raw_fGetIntegerv(LOCAL_GL_FRAMEBUFFER_BINDING, (GLint*)&actual);
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GLuint predicted = mInternalReadFB;
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if (predicted != actual) {
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printf_stderr("Misprediction: Bound read FB predicted: %d. Was: %d.\n",
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predicted, actual);
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MOZ_ASSERT(false, "Read FB binding misprediction!");
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}
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#endif
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return mUserReadFB;
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}
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GLuint
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GLScreenBuffer::GetFB() const
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{
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MOZ_ASSERT(GetDrawFB() == GetReadFB());
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return GetDrawFB();
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}
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void
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GLScreenBuffer::DeletingFB(GLuint fb)
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{
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if (fb == mInternalDrawFB) {
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mInternalDrawFB = 0;
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mUserDrawFB = 0;
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}
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if (fb == mInternalReadFB) {
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mInternalReadFB = 0;
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mUserReadFB = 0;
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}
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}
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void
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GLScreenBuffer::AfterDrawCall()
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{
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if (mUserDrawFB != 0)
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return;
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RequireBlit();
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}
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void
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GLScreenBuffer::BeforeReadCall()
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{
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if (mUserReadFB != 0)
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return;
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AssureBlitted();
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}
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bool
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GLScreenBuffer::ReadPixels(GLint x, GLint y, GLsizei width, GLsizei height,
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GLenum format, GLenum type, GLvoid *pixels)
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{
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// If the currently bound framebuffer is backed by a SharedSurface_GL
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// then it might want to override how we read pixel data from it.
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// This is normally only the default framebuffer, but we can also
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// have SharedSurfaces bound to other framebuffers when doing
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// readback for BasicLayers.
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SharedSurface_GL* surf;
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if (GetReadFB() == 0) {
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surf = SharedSurf();
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} else {
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surf = mGL->mFBOMapping[GetReadFB()];
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}
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if (surf) {
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return surf->ReadPixels(x, y, width, height, format, type, pixels);
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}
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return false;
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}
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void
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GLScreenBuffer::RequireBlit()
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{
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mNeedsBlit = true;
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}
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void
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GLScreenBuffer::AssureBlitted()
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{
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if (!mNeedsBlit)
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return;
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if (mDraw) {
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GLuint drawFB = DrawFB();
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GLuint readFB = ReadFB();
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MOZ_ASSERT(drawFB != 0);
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MOZ_ASSERT(drawFB != readFB);
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MOZ_ASSERT(mGL->IsSupported(GLFeature::framebuffer_blit));
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MOZ_ASSERT(mDraw->Size() == mRead->Size());
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ScopedBindFramebuffer boundFB(mGL);
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ScopedGLState scissor(mGL, LOCAL_GL_SCISSOR_TEST, false);
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BindReadFB_Internal(drawFB);
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BindDrawFB_Internal(readFB);
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const gfxIntSize& srcSize = mDraw->Size();
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const gfxIntSize& destSize = mRead->Size();
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mGL->raw_fBlitFramebuffer(0, 0, srcSize.width, srcSize.height,
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0, 0, destSize.width, destSize.height,
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LOCAL_GL_COLOR_BUFFER_BIT,
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LOCAL_GL_NEAREST);
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// Done!
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}
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mNeedsBlit = false;
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}
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void
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GLScreenBuffer::Morph(SurfaceFactory_GL* newFactory, SurfaceStreamType streamType)
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{
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MOZ_ASSERT(mStream);
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if (newFactory) {
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delete mFactory;
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mFactory = newFactory;
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}
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if (mStream->mType == streamType)
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return;
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SurfaceStream* newStream = SurfaceStream::CreateForType(streamType, mGL, mStream);
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MOZ_ASSERT(newStream);
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delete mStream;
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mStream = newStream;
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}
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void
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GLScreenBuffer::Attach(SharedSurface* surface, const gfxIntSize& size)
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{
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ScopedBindFramebuffer autoFB(mGL);
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SharedSurface_GL* surf = SharedSurface_GL::Cast(surface);
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if (mRead && SharedSurf())
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SharedSurf()->UnlockProd();
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surf->LockProd();
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if (mRead &&
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surf->AttachType() == SharedSurf()->AttachType() &&
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size == Size())
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{
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// Same size, same type, ready for reuse!
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mRead->Attach(surf);
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} else {
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// Else something changed, so resize:
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DrawBuffer* draw = CreateDraw(size); // Can be null.
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ReadBuffer* read = CreateRead(surf);
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MOZ_ASSERT(read); // Should never fail if SwapProd succeeded.
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delete mDraw;
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delete mRead;
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mDraw = draw;
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mRead = read;
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}
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// Check that we're all set up.
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MOZ_ASSERT(SharedSurf() == surf);
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if (!PreserveBuffer()) {
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// DiscardFramebuffer here could help perf on some mobile platforms.
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}
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}
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bool
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GLScreenBuffer::Swap(const gfxIntSize& size)
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{
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SharedSurface* nextSurf = mStream->SwapProducer(mFactory, size);
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if (!nextSurf) {
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SurfaceFactory_Basic basicFactory(mGL, mFactory->Caps());
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nextSurf = mStream->SwapProducer(&basicFactory, size);
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if (!nextSurf)
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return false;
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NS_WARNING("SwapProd failed for sophisticated Factory type, fell back to Basic.");
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}
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MOZ_ASSERT(nextSurf);
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Attach(nextSurf, size);
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return true;
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}
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bool
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GLScreenBuffer::PublishFrame(const gfxIntSize& size)
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{
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AssureBlitted();
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bool good = Swap(size);
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return good;
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}
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bool
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GLScreenBuffer::Resize(const gfxIntSize& size)
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{
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SharedSurface* surface = mStream->Resize(mFactory, size);
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if (!surface)
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return false;
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Attach(surface, size);
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return true;
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}
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DrawBuffer*
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GLScreenBuffer::CreateDraw(const gfxIntSize& size)
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{
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GLContext* gl = mFactory->GL();
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const GLFormats& formats = mFactory->Formats();
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const SurfaceCaps& caps = mFactory->DrawCaps();
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return DrawBuffer::Create(gl, caps, formats, size);
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}
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ReadBuffer*
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GLScreenBuffer::CreateRead(SharedSurface_GL* surf)
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{
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GLContext* gl = mFactory->GL();
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const GLFormats& formats = mFactory->Formats();
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const SurfaceCaps& caps = mFactory->ReadCaps();
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return ReadBuffer::Create(gl, caps, formats, surf);
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}
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void
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GLScreenBuffer::Readback(SharedSurface_GL* src, gfxImageSurface* dest)
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{
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MOZ_ASSERT(src && dest);
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MOZ_ASSERT(dest->GetSize() == src->Size());
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MOZ_ASSERT(dest->Format() == (src->HasAlpha() ? gfxImageFormatARGB32
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: gfxImageFormatRGB24));
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mGL->MakeCurrent();
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bool needsSwap = src != SharedSurf();
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if (needsSwap) {
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SharedSurf()->UnlockProd();
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src->LockProd();
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}
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ReadBuffer* buffer = CreateRead(src);
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MOZ_ASSERT(buffer);
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ScopedBindFramebuffer autoFB(mGL, buffer->FB());
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mGL->ReadPixelsIntoImageSurface(dest);
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delete buffer;
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if (needsSwap) {
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src->UnlockProd();
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SharedSurf()->LockProd();
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}
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}
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DrawBuffer*
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DrawBuffer::Create(GLContext* const gl,
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const SurfaceCaps& caps,
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const GLFormats& formats,
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const gfxIntSize& size)
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{
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if (!caps.color) {
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MOZ_ASSERT(!caps.alpha && !caps.depth && !caps.stencil);
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// Nothing is needed.
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return nullptr;
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}
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GLuint colorMSRB = 0;
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GLuint depthRB = 0;
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GLuint stencilRB = 0;
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GLuint* pColorMSRB = caps.antialias ? &colorMSRB : nullptr;
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GLuint* pDepthRB = caps.depth ? &depthRB : nullptr;
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GLuint* pStencilRB = caps.stencil ? &stencilRB : nullptr;
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if (!formats.color_rbFormat)
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pColorMSRB = nullptr;
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if (pDepthRB && pStencilRB) {
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if (!formats.depth && !formats.depthStencil)
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pDepthRB = nullptr;
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if (!formats.stencil && !formats.depthStencil)
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pStencilRB = nullptr;
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} else {
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if (!formats.depth)
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pDepthRB = nullptr;
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if (!formats.stencil)
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pStencilRB = nullptr;
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}
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CreateRenderbuffersForOffscreen(gl, formats, size, caps.antialias,
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pColorMSRB, pDepthRB, pStencilRB);
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GLuint fb = 0;
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gl->fGenFramebuffers(1, &fb);
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gl->AttachBuffersToFB(0, colorMSRB, depthRB, stencilRB, fb);
|
|
MOZ_ASSERT(gl->IsFramebufferComplete(fb));
|
|
|
|
return new DrawBuffer(gl, size, fb, colorMSRB, depthRB, stencilRB);
|
|
}
|
|
|
|
DrawBuffer::~DrawBuffer()
|
|
{
|
|
mGL->MakeCurrent();
|
|
|
|
GLuint fb = mFB;
|
|
GLuint rbs[] = {
|
|
mColorMSRB,
|
|
mDepthRB,
|
|
mStencilRB
|
|
};
|
|
|
|
mGL->fDeleteFramebuffers(1, &fb);
|
|
mGL->fDeleteRenderbuffers(3, rbs);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ReadBuffer*
|
|
ReadBuffer::Create(GLContext* gl,
|
|
const SurfaceCaps& caps,
|
|
const GLFormats& formats,
|
|
SharedSurface_GL* surf)
|
|
{
|
|
MOZ_ASSERT(surf);
|
|
|
|
if (surf->AttachType() == AttachmentType::Screen) {
|
|
// Don't need anything. Our read buffer will be the 'screen'.
|
|
|
|
return new ReadBuffer(gl,
|
|
0, 0, 0,
|
|
surf);
|
|
}
|
|
|
|
GLuint depthRB = 0;
|
|
GLuint stencilRB = 0;
|
|
|
|
GLuint* pDepthRB = caps.depth ? &depthRB : nullptr;
|
|
GLuint* pStencilRB = caps.stencil ? &stencilRB : nullptr;
|
|
|
|
CreateRenderbuffersForOffscreen(gl, formats, surf->Size(), caps.antialias,
|
|
nullptr, pDepthRB, pStencilRB);
|
|
|
|
GLuint colorTex = 0;
|
|
GLuint colorRB = 0;
|
|
GLenum target = 0;
|
|
|
|
switch (surf->AttachType()) {
|
|
case AttachmentType::GLTexture:
|
|
colorTex = surf->Texture();
|
|
target = surf->TextureTarget();
|
|
break;
|
|
case AttachmentType::GLRenderbuffer:
|
|
colorRB = surf->Renderbuffer();
|
|
break;
|
|
default:
|
|
MOZ_CRASH("Unknown attachment type?");
|
|
}
|
|
MOZ_ASSERT(colorTex || colorRB);
|
|
|
|
GLuint fb = 0;
|
|
gl->fGenFramebuffers(1, &fb);
|
|
gl->AttachBuffersToFB(colorTex, colorRB, depthRB, stencilRB, fb, target);
|
|
gl->mFBOMapping[fb] = surf;
|
|
|
|
MOZ_ASSERT(gl->IsFramebufferComplete(fb));
|
|
|
|
return new ReadBuffer(gl,
|
|
fb, depthRB, stencilRB,
|
|
surf);
|
|
}
|
|
|
|
ReadBuffer::~ReadBuffer()
|
|
{
|
|
mGL->MakeCurrent();
|
|
|
|
GLuint fb = mFB;
|
|
GLuint rbs[] = {
|
|
mDepthRB,
|
|
mStencilRB
|
|
};
|
|
|
|
mGL->fDeleteFramebuffers(1, &fb);
|
|
mGL->fDeleteRenderbuffers(2, rbs);
|
|
mGL->mFBOMapping.erase(mFB);
|
|
}
|
|
|
|
void
|
|
ReadBuffer::Attach(SharedSurface_GL* surf)
|
|
{
|
|
MOZ_ASSERT(surf && mSurf);
|
|
MOZ_ASSERT(surf->AttachType() == mSurf->AttachType());
|
|
MOZ_ASSERT(surf->Size() == mSurf->Size());
|
|
|
|
// Nothing else is needed for AttachType Screen.
|
|
if (surf->AttachType() != AttachmentType::Screen) {
|
|
GLuint colorTex = 0;
|
|
GLuint colorRB = 0;
|
|
GLenum target = 0;
|
|
|
|
switch (surf->AttachType()) {
|
|
case AttachmentType::GLTexture:
|
|
colorTex = surf->Texture();
|
|
target = surf->TextureTarget();
|
|
break;
|
|
case AttachmentType::GLRenderbuffer:
|
|
colorRB = surf->Renderbuffer();
|
|
break;
|
|
default:
|
|
MOZ_CRASH("Unknown attachment type?");
|
|
}
|
|
|
|
mGL->AttachBuffersToFB(colorTex, colorRB, 0, 0, mFB, target);
|
|
mGL->mFBOMapping[mFB] = surf;
|
|
MOZ_ASSERT(mGL->IsFramebufferComplete(mFB));
|
|
}
|
|
|
|
mSurf = surf;
|
|
}
|
|
|
|
const gfxIntSize&
|
|
ReadBuffer::Size() const
|
|
{
|
|
return mSurf->Size();
|
|
}
|
|
|
|
} /* namespace gl */
|
|
} /* namespace mozilla */
|