mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
691 lines
17 KiB
C++
691 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 "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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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->IsExtensionSupported(GLContext::EXT_framebuffer_blit) ||
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mGL->IsExtensionSupported(GLContext::ANGLE_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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gl->CreateRenderbuffersForOffscreen(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);
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MOZ_ASSERT(gl->IsFramebufferComplete(fb));
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return new DrawBuffer(gl, size, fb, colorMSRB, depthRB, stencilRB);
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}
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DrawBuffer::~DrawBuffer()
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{
|
|
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;
|
|
|
|
gl->CreateRenderbuffersForOffscreen(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 */
|