mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-07-05 12:29:01 +00:00
1774 lines
59 KiB
C++
1774 lines
59 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "CompositorOGL.h"
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#include <stddef.h> // for size_t
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#include <stdint.h> // for uint32_t, uint8_t
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#include <stdlib.h> // for free, malloc
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#include "GLContextProvider.h" // for GLContextProvider
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#include "GLContext.h" // for GLContext
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#include "GLUploadHelpers.h"
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#include "Layers.h" // for WriteSnapshotToDumpFile
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#include "LayerScope.h" // for LayerScope
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#include "gfxCrashReporterUtils.h" // for ScopedGfxFeatureReporter
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#include "gfxEnv.h" // for gfxEnv
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#include "gfxPlatform.h" // for gfxPlatform
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#include "gfxPrefs.h" // for gfxPrefs
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#include "gfxRect.h" // for gfxRect
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#include "gfxUtils.h" // for gfxUtils, etc
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#include "mozilla/ArrayUtils.h" // for ArrayLength
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#include "mozilla/Preferences.h" // for Preferences
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#include "mozilla/gfx/BasePoint.h" // for BasePoint
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#include "mozilla/gfx/Matrix.h" // for Matrix4x4, Matrix
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#include "mozilla/layers/LayerManagerComposite.h" // for LayerComposite, etc
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#include "mozilla/layers/CompositingRenderTargetOGL.h"
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#include "mozilla/layers/Effects.h" // for EffectChain, TexturedEffect, etc
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#include "mozilla/layers/TextureHost.h" // for TextureSource, etc
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#include "mozilla/layers/TextureHostOGL.h" // for TextureSourceOGL, etc
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#include "mozilla/mozalloc.h" // for operator delete, etc
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#include "nsAppRunner.h"
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#include "nsAString.h"
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#include "nsIConsoleService.h" // for nsIConsoleService, etc
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#include "nsIWidget.h" // for nsIWidget
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#include "nsLiteralString.h" // for NS_LITERAL_STRING
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#include "nsMathUtils.h" // for NS_roundf
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#include "nsRect.h" // for mozilla::gfx::IntRect
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#include "nsServiceManagerUtils.h" // for do_GetService
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#include "nsString.h" // for nsString, nsAutoCString, etc
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#include "ScopedGLHelpers.h"
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#include "GLReadTexImageHelper.h"
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#include "GLBlitTextureImageHelper.h"
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#include "HeapCopyOfStackArray.h"
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#if MOZ_WIDGET_ANDROID
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#include "TexturePoolOGL.h"
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#endif
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#ifdef XP_MACOSX
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#include "nsCocoaFeatures.h"
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#endif
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#include "GeckoProfiler.h"
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namespace mozilla {
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using namespace std;
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using namespace gfx;
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namespace layers {
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using namespace mozilla::gl;
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static void
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BindMaskForProgram(ShaderProgramOGL* aProgram, TextureSourceOGL* aSourceMask,
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GLenum aTexUnit, const gfx::Matrix4x4& aTransform)
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{
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MOZ_ASSERT(LOCAL_GL_TEXTURE0 <= aTexUnit && aTexUnit <= LOCAL_GL_TEXTURE31);
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aSourceMask->BindTexture(aTexUnit, gfx::Filter::LINEAR);
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aProgram->SetMaskTextureUnit(aTexUnit - LOCAL_GL_TEXTURE0);
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aProgram->SetMaskLayerTransform(aTransform);
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}
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CompositorOGL::CompositorOGL(nsIWidget *aWidget, int aSurfaceWidth,
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int aSurfaceHeight, bool aUseExternalSurfaceSize)
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: mWidget(aWidget)
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, mWidgetSize(-1, -1)
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, mSurfaceSize(aSurfaceWidth, aSurfaceHeight)
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, mHasBGRA(0)
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, mUseExternalSurfaceSize(aUseExternalSurfaceSize)
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, mFrameInProgress(false)
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, mDestroyed(false)
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, mViewportSize(0, 0)
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, mCurrentProgram(nullptr)
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{
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MOZ_COUNT_CTOR(CompositorOGL);
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}
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CompositorOGL::~CompositorOGL()
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{
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MOZ_COUNT_DTOR(CompositorOGL);
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Destroy();
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}
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already_AddRefed<mozilla::gl::GLContext>
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CompositorOGL::CreateContext()
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{
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RefPtr<GLContext> context;
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// Used by mock widget to create an offscreen context
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void* widgetOpenGLContext = mWidget->GetNativeData(NS_NATIVE_OPENGL_CONTEXT);
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if (widgetOpenGLContext) {
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GLContext* alreadyRefed = reinterpret_cast<GLContext*>(widgetOpenGLContext);
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return already_AddRefed<GLContext>(alreadyRefed);
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}
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#ifdef XP_WIN
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if (gfxEnv::LayersPreferEGL()) {
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printf_stderr("Trying GL layers...\n");
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context = gl::GLContextProviderEGL::CreateForWindow(mWidget, false);
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}
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#endif
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// Allow to create offscreen GL context for main Layer Manager
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if (!context && gfxEnv::LayersPreferOffscreen()) {
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SurfaceCaps caps = SurfaceCaps::ForRGB();
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caps.preserve = false;
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caps.bpp16 = gfxPlatform::GetPlatform()->GetOffscreenFormat() == gfxImageFormat::RGB16_565;
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context = GLContextProvider::CreateOffscreen(mSurfaceSize,
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caps, CreateContextFlags::REQUIRE_COMPAT_PROFILE);
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}
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if (!context) {
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context = gl::GLContextProvider::CreateForWindow(mWidget,
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gfxPlatform::GetPlatform()->RequiresAcceleratedGLContextForCompositorOGL());
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}
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if (!context) {
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NS_WARNING("Failed to create CompositorOGL context");
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}
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#ifdef MOZ_WIDGET_GONK
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mWidget->SetNativeData(NS_NATIVE_OPENGL_CONTEXT,
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reinterpret_cast<uintptr_t>(context.get()));
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#endif
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return context.forget();
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}
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void
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CompositorOGL::Destroy()
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{
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if (mTexturePool) {
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mTexturePool->Clear();
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mTexturePool = nullptr;
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}
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if (!mDestroyed) {
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mDestroyed = true;
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CleanupResources();
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}
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}
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void
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CompositorOGL::CleanupResources()
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{
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if (!mGLContext)
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return;
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#ifdef MOZ_WIDGET_GONK
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mWidget->SetNativeData(NS_NATIVE_OPENGL_CONTEXT,
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reinterpret_cast<uintptr_t>(nullptr));
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#endif
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RefPtr<GLContext> ctx = mGLContext->GetSharedContext();
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if (!ctx) {
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ctx = mGLContext;
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}
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if (!ctx->MakeCurrent()) {
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// Leak resources!
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mQuadVBO = 0;
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mGLContext = nullptr;
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mPrograms.clear();
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return;
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}
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for (std::map<ShaderConfigOGL, ShaderProgramOGL *>::iterator iter = mPrograms.begin();
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iter != mPrograms.end();
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iter++) {
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delete iter->second;
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}
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mPrograms.clear();
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ctx->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0);
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if (mQuadVBO) {
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ctx->fDeleteBuffers(1, &mQuadVBO);
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mQuadVBO = 0;
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}
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DestroyVR(ctx);
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mGLContext->MakeCurrent();
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mBlitTextureImageHelper = nullptr;
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mContextStateTracker.DestroyOGL(mGLContext);
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// On the main thread the Widget will be destroyed soon and calling MakeCurrent
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// after that could cause a crash (at least with GLX, see bug 1059793), unless
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// context is marked as destroyed.
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// There may be some textures still alive that will try to call MakeCurrent on
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// the context so let's make sure it is marked destroyed now.
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mGLContext->MarkDestroyed();
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mGLContext = nullptr;
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}
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bool
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CompositorOGL::Initialize()
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{
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bool force = gfxPrefs::LayersAccelerationForceEnabled();
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ScopedGfxFeatureReporter reporter("GL Layers", force);
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// Do not allow double initialization
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MOZ_ASSERT(mGLContext == nullptr, "Don't reinitialize CompositorOGL");
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mGLContext = CreateContext();
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#ifdef MOZ_WIDGET_ANDROID
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if (!mGLContext)
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NS_RUNTIMEABORT("We need a context on Android");
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#endif
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if (!mGLContext)
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return false;
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MakeCurrent();
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mHasBGRA =
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mGLContext->IsExtensionSupported(gl::GLContext::EXT_texture_format_BGRA8888) ||
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mGLContext->IsExtensionSupported(gl::GLContext::EXT_bgra);
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mGLContext->fBlendFuncSeparate(LOCAL_GL_ONE, LOCAL_GL_ONE_MINUS_SRC_ALPHA,
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LOCAL_GL_ONE, LOCAL_GL_ONE_MINUS_SRC_ALPHA);
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mGLContext->fEnable(LOCAL_GL_BLEND);
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// initialise a common shader to check that we can actually compile a shader
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RefPtr<EffectSolidColor> effect = new EffectSolidColor(Color(0, 0, 0, 0));
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ShaderConfigOGL config = GetShaderConfigFor(effect);
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if (!GetShaderProgramFor(config)) {
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return false;
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}
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if (mGLContext->WorkAroundDriverBugs()) {
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/**
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* We'll test the ability here to bind NPOT textures to a framebuffer, if
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* this fails we'll try ARB_texture_rectangle.
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*/
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GLenum textureTargets[] = {
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LOCAL_GL_TEXTURE_2D,
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LOCAL_GL_NONE
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};
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if (!mGLContext->IsGLES()) {
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// No TEXTURE_RECTANGLE_ARB available on ES2
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textureTargets[1] = LOCAL_GL_TEXTURE_RECTANGLE_ARB;
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}
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mFBOTextureTarget = LOCAL_GL_NONE;
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GLuint testFBO = 0;
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mGLContext->fGenFramebuffers(1, &testFBO);
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GLuint testTexture = 0;
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for (uint32_t i = 0; i < ArrayLength(textureTargets); i++) {
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GLenum target = textureTargets[i];
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if (!target)
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continue;
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mGLContext->fGenTextures(1, &testTexture);
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mGLContext->fBindTexture(target, testTexture);
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mGLContext->fTexParameteri(target,
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LOCAL_GL_TEXTURE_MIN_FILTER,
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LOCAL_GL_NEAREST);
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mGLContext->fTexParameteri(target,
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LOCAL_GL_TEXTURE_MAG_FILTER,
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LOCAL_GL_NEAREST);
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mGLContext->fTexImage2D(target,
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0,
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LOCAL_GL_RGBA,
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5, 3, /* sufficiently NPOT */
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0,
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LOCAL_GL_RGBA,
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LOCAL_GL_UNSIGNED_BYTE,
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nullptr);
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// unbind this texture, in preparation for binding it to the FBO
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mGLContext->fBindTexture(target, 0);
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mGLContext->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, testFBO);
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mGLContext->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER,
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LOCAL_GL_COLOR_ATTACHMENT0,
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target,
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testTexture,
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0);
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if (mGLContext->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER) ==
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LOCAL_GL_FRAMEBUFFER_COMPLETE)
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{
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mFBOTextureTarget = target;
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mGLContext->fDeleteTextures(1, &testTexture);
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break;
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}
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mGLContext->fDeleteTextures(1, &testTexture);
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}
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if (testFBO) {
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mGLContext->fDeleteFramebuffers(1, &testFBO);
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}
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if (mFBOTextureTarget == LOCAL_GL_NONE) {
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/* Unable to find a texture target that works with FBOs and NPOT textures */
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return false;
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}
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} else {
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// not trying to work around driver bugs, so TEXTURE_2D should just work
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mFBOTextureTarget = LOCAL_GL_TEXTURE_2D;
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}
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// back to default framebuffer, to avoid confusion
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mGLContext->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0);
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if (mFBOTextureTarget == LOCAL_GL_TEXTURE_RECTANGLE_ARB) {
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/* If we're using TEXTURE_RECTANGLE, then we must have the ARB
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* extension -- the EXT variant does not provide support for
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* texture rectangle access inside GLSL (sampler2DRect,
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* texture2DRect).
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*/
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if (!mGLContext->IsExtensionSupported(gl::GLContext::ARB_texture_rectangle))
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return false;
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}
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/* Create a simple quad VBO */
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mGLContext->fGenBuffers(1, &mQuadVBO);
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mGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, mQuadVBO);
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// 4 quads, with the number of the quad (vertexID) encoded in w.
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GLfloat vertices[] = {
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0.0f, 0.0f, 0.0f, 0.0f,
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1.0f, 0.0f, 0.0f, 0.0f,
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0.0f, 1.0f, 0.0f, 0.0f,
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1.0f, 0.0f, 0.0f, 0.0f,
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0.0f, 1.0f, 0.0f, 0.0f,
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1.0f, 1.0f, 0.0f, 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f,
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1.0f, 0.0f, 0.0f, 1.0f,
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0.0f, 1.0f, 0.0f, 1.0f,
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1.0f, 0.0f, 0.0f, 1.0f,
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0.0f, 1.0f, 0.0f, 1.0f,
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1.0f, 1.0f, 0.0f, 1.0f,
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0.0f, 0.0f, 0.0f, 2.0f,
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1.0f, 0.0f, 0.0f, 2.0f,
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0.0f, 1.0f, 0.0f, 2.0f,
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1.0f, 0.0f, 0.0f, 2.0f,
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0.0f, 1.0f, 0.0f, 2.0f,
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1.0f, 1.0f, 0.0f, 2.0f,
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0.0f, 0.0f, 0.0f, 3.0f,
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1.0f, 0.0f, 0.0f, 3.0f,
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0.0f, 1.0f, 0.0f, 3.0f,
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1.0f, 0.0f, 0.0f, 3.0f,
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0.0f, 1.0f, 0.0f, 3.0f,
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1.0f, 1.0f, 0.0f, 3.0f,
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};
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HeapCopyOfStackArray<GLfloat> verticesOnHeap(vertices);
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mGLContext->fBufferData(LOCAL_GL_ARRAY_BUFFER,
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verticesOnHeap.ByteLength(),
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verticesOnHeap.Data(),
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LOCAL_GL_STATIC_DRAW);
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mGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, 0);
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nsCOMPtr<nsIConsoleService>
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console(do_GetService(NS_CONSOLESERVICE_CONTRACTID));
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if (console) {
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nsString msg;
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msg +=
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NS_LITERAL_STRING("OpenGL compositor Initialized Succesfully.\nVersion: ");
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msg += NS_ConvertUTF8toUTF16(
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nsDependentCString((const char*)mGLContext->fGetString(LOCAL_GL_VERSION)));
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msg += NS_LITERAL_STRING("\nVendor: ");
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msg += NS_ConvertUTF8toUTF16(
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nsDependentCString((const char*)mGLContext->fGetString(LOCAL_GL_VENDOR)));
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msg += NS_LITERAL_STRING("\nRenderer: ");
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msg += NS_ConvertUTF8toUTF16(
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nsDependentCString((const char*)mGLContext->fGetString(LOCAL_GL_RENDERER)));
|
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msg += NS_LITERAL_STRING("\nFBO Texture Target: ");
|
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if (mFBOTextureTarget == LOCAL_GL_TEXTURE_2D)
|
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msg += NS_LITERAL_STRING("TEXTURE_2D");
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else
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msg += NS_LITERAL_STRING("TEXTURE_RECTANGLE");
|
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console->LogStringMessage(msg.get());
|
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}
|
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|
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mVR.mInitialized = false;
|
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if (gfxPrefs::VREnabled()) {
|
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if (!InitializeVR()) {
|
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NS_WARNING("Failed to initialize VR in CompositorOGL");
|
||
}
|
||
}
|
||
|
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reporter.SetSuccessful();
|
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return true;
|
||
}
|
||
|
||
/*
|
||
* Returns a size that is equal to, or larger than and closest to,
|
||
* aSize where both width and height are powers of two.
|
||
* If the OpenGL setup is capable of using non-POT textures,
|
||
* then it will just return aSize.
|
||
*/
|
||
static IntSize
|
||
CalculatePOTSize(const IntSize& aSize, GLContext* gl)
|
||
{
|
||
if (CanUploadNonPowerOfTwo(gl))
|
||
return aSize;
|
||
|
||
return IntSize(NextPowerOfTwo(aSize.width), NextPowerOfTwo(aSize.height));
|
||
}
|
||
|
||
// |aRect| is the rectangle we want to draw to. We will draw it with
|
||
// up to 4 draw commands if necessary to avoid wrapping.
|
||
// |aTexCoordRect| is the rectangle from the texture that we want to
|
||
// draw using the given program.
|
||
// |aTexture| is the texture we are drawing. Its actual size can be
|
||
// larger than the rectangle given by |texCoordRect|.
|
||
void
|
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CompositorOGL::BindAndDrawQuadWithTextureRect(ShaderProgramOGL *aProg,
|
||
const Rect& aRect,
|
||
const Rect& aTexCoordRect,
|
||
TextureSource *aTexture)
|
||
{
|
||
Rect scaledTexCoordRect = aTexCoordRect;
|
||
|
||
// If the OpenGL setup does not support non-power-of-two textures then the
|
||
// texture's width and height will have been increased to the next
|
||
// power-of-two (unless already a power of two). In that case we must scale
|
||
// the texture coordinates to account for that.
|
||
if (!CanUploadNonPowerOfTwo(mGLContext)) {
|
||
const IntSize& textureSize = aTexture->GetSize();
|
||
const IntSize potSize = CalculatePOTSize(textureSize, mGLContext);
|
||
if (potSize != textureSize) {
|
||
const float xScale = (float)textureSize.width / (float)potSize.width;
|
||
const float yScale = (float)textureSize.height / (float)potSize.height;
|
||
scaledTexCoordRect.Scale(xScale, yScale);
|
||
}
|
||
}
|
||
|
||
Rect layerRects[4];
|
||
Rect textureRects[4];
|
||
size_t rects = DecomposeIntoNoRepeatRects(aRect,
|
||
scaledTexCoordRect,
|
||
&layerRects,
|
||
&textureRects);
|
||
|
||
BindAndDrawQuads(aProg, rects, layerRects, textureRects);
|
||
}
|
||
|
||
void
|
||
CompositorOGL::PrepareViewport(CompositingRenderTargetOGL* aRenderTarget)
|
||
{
|
||
MOZ_ASSERT(aRenderTarget);
|
||
const gfx::IntSize& size = aRenderTarget->mInitParams.mSize;
|
||
|
||
// Set the viewport correctly.
|
||
mGLContext->fViewport(0, 0, size.width, size.height);
|
||
|
||
mRenderBound = Rect(0, 0, size.width, size.height);
|
||
|
||
mViewportSize = size;
|
||
|
||
if (!aRenderTarget->HasComplexProjection()) {
|
||
// We flip the view matrix around so that everything is right-side up; we're
|
||
// drawing directly into the window's back buffer, so this keeps things
|
||
// looking correct.
|
||
// XXX: We keep track of whether the window size changed, so we could skip
|
||
// this update if it hadn't changed since the last call.
|
||
|
||
// Matrix to transform (0, 0, aWidth, aHeight) to viewport space (-1.0, 1.0,
|
||
// 2, 2) and flip the contents.
|
||
Matrix viewMatrix;
|
||
if (mGLContext->IsOffscreen() && !gIsGtest) {
|
||
// In case of rendering via GL Offscreen context, disable Y-Flipping
|
||
viewMatrix.PreTranslate(-1.0, -1.0);
|
||
viewMatrix.PreScale(2.0f / float(size.width), 2.0f / float(size.height));
|
||
} else {
|
||
viewMatrix.PreTranslate(-1.0, 1.0);
|
||
viewMatrix.PreScale(2.0f / float(size.width), 2.0f / float(size.height));
|
||
viewMatrix.PreScale(1.0f, -1.0f);
|
||
}
|
||
|
||
MOZ_ASSERT(mCurrentRenderTarget, "No destination");
|
||
// If we're drawing directly to the window then we want to offset
|
||
// drawing by the render offset.
|
||
if (!mTarget && mCurrentRenderTarget->IsWindow()) {
|
||
viewMatrix.PreTranslate(mRenderOffset.x, mRenderOffset.y);
|
||
}
|
||
|
||
Matrix4x4 matrix3d = Matrix4x4::From2D(viewMatrix);
|
||
matrix3d._33 = 0.0f;
|
||
mProjMatrix = matrix3d;
|
||
mGLContext->fDepthRange(0.0f, 1.0f);
|
||
} else {
|
||
// XXX take into account mRenderOffset
|
||
bool depthEnable;
|
||
float zNear, zFar;
|
||
aRenderTarget->GetProjection(mProjMatrix, depthEnable, zNear, zFar);
|
||
mGLContext->fDepthRange(zNear, zFar);
|
||
}
|
||
}
|
||
|
||
already_AddRefed<CompositingRenderTarget>
|
||
CompositorOGL::CreateRenderTarget(const IntRect &aRect, SurfaceInitMode aInit)
|
||
{
|
||
MOZ_ASSERT(aRect.width != 0 && aRect.height != 0, "Trying to create a render target of invalid size");
|
||
|
||
if (aRect.width * aRect.height == 0) {
|
||
return nullptr;
|
||
}
|
||
|
||
GLuint tex = 0;
|
||
GLuint fbo = 0;
|
||
CreateFBOWithTexture(aRect, false, 0, &fbo, &tex);
|
||
RefPtr<CompositingRenderTargetOGL> surface
|
||
= new CompositingRenderTargetOGL(this, aRect.TopLeft(), tex, fbo);
|
||
surface->Initialize(aRect.Size(), mFBOTextureTarget, aInit);
|
||
return surface.forget();
|
||
}
|
||
|
||
already_AddRefed<CompositingRenderTarget>
|
||
CompositorOGL::CreateRenderTargetFromSource(const IntRect &aRect,
|
||
const CompositingRenderTarget *aSource,
|
||
const IntPoint &aSourcePoint)
|
||
{
|
||
MOZ_ASSERT(aRect.width != 0 && aRect.height != 0, "Trying to create a render target of invalid size");
|
||
|
||
if (aRect.width * aRect.height == 0) {
|
||
return nullptr;
|
||
}
|
||
|
||
GLuint tex = 0;
|
||
GLuint fbo = 0;
|
||
const CompositingRenderTargetOGL* sourceSurface
|
||
= static_cast<const CompositingRenderTargetOGL*>(aSource);
|
||
IntRect sourceRect(aSourcePoint, aRect.Size());
|
||
if (aSource) {
|
||
CreateFBOWithTexture(sourceRect, true, sourceSurface->GetFBO(),
|
||
&fbo, &tex);
|
||
} else {
|
||
CreateFBOWithTexture(sourceRect, true, 0,
|
||
&fbo, &tex);
|
||
}
|
||
|
||
RefPtr<CompositingRenderTargetOGL> surface
|
||
= new CompositingRenderTargetOGL(this, aRect.TopLeft(), tex, fbo);
|
||
surface->Initialize(aRect.Size(),
|
||
mFBOTextureTarget,
|
||
INIT_MODE_NONE);
|
||
return surface.forget();
|
||
}
|
||
|
||
void
|
||
CompositorOGL::SetRenderTarget(CompositingRenderTarget *aSurface)
|
||
{
|
||
MOZ_ASSERT(aSurface);
|
||
CompositingRenderTargetOGL* surface
|
||
= static_cast<CompositingRenderTargetOGL*>(aSurface);
|
||
if (mCurrentRenderTarget != surface) {
|
||
mCurrentRenderTarget = surface;
|
||
if (mCurrentRenderTarget) {
|
||
mContextStateTracker.PopOGLSection(gl(), "Frame");
|
||
}
|
||
mContextStateTracker.PushOGLSection(gl(), "Frame");
|
||
surface->BindRenderTarget();
|
||
}
|
||
|
||
PrepareViewport(mCurrentRenderTarget);
|
||
}
|
||
|
||
CompositingRenderTarget*
|
||
CompositorOGL::GetCurrentRenderTarget() const
|
||
{
|
||
return mCurrentRenderTarget;
|
||
}
|
||
|
||
static GLenum
|
||
GetFrameBufferInternalFormat(GLContext* gl,
|
||
GLuint aFrameBuffer,
|
||
nsIWidget* aWidget)
|
||
{
|
||
if (aFrameBuffer == 0) { // default framebuffer
|
||
return aWidget->GetGLFrameBufferFormat();
|
||
}
|
||
return LOCAL_GL_RGBA;
|
||
}
|
||
|
||
void
|
||
CompositorOGL::ClearRect(const gfx::Rect& aRect)
|
||
{
|
||
// Map aRect to OGL coordinates, origin:bottom-left
|
||
GLint y = mViewportSize.height - (aRect.y + aRect.height);
|
||
|
||
ScopedGLState scopedScissorTestState(mGLContext, LOCAL_GL_SCISSOR_TEST, true);
|
||
ScopedScissorRect autoScissorRect(mGLContext, aRect.x, y, aRect.width, aRect.height);
|
||
mGLContext->fClearColor(0.0, 0.0, 0.0, 0.0);
|
||
mGLContext->fClear(LOCAL_GL_COLOR_BUFFER_BIT | LOCAL_GL_DEPTH_BUFFER_BIT);
|
||
}
|
||
|
||
void
|
||
CompositorOGL::BeginFrame(const nsIntRegion& aInvalidRegion,
|
||
const Rect *aClipRectIn,
|
||
const Rect& aRenderBounds,
|
||
Rect *aClipRectOut,
|
||
Rect *aRenderBoundsOut)
|
||
{
|
||
PROFILER_LABEL("CompositorOGL", "BeginFrame",
|
||
js::ProfileEntry::Category::GRAPHICS);
|
||
|
||
MOZ_ASSERT(!mFrameInProgress, "frame still in progress (should have called EndFrame");
|
||
|
||
gfx::Rect rect;
|
||
if (mUseExternalSurfaceSize) {
|
||
rect = gfx::Rect(0, 0, mSurfaceSize.width, mSurfaceSize.height);
|
||
} else {
|
||
rect = gfx::Rect(aRenderBounds.x, aRenderBounds.y, aRenderBounds.width, aRenderBounds.height);
|
||
}
|
||
|
||
if (aRenderBoundsOut) {
|
||
*aRenderBoundsOut = rect;
|
||
}
|
||
|
||
GLint width = rect.width;
|
||
GLint height = rect.height;
|
||
|
||
// We can't draw anything to something with no area
|
||
// so just return
|
||
if (width == 0 || height == 0)
|
||
return;
|
||
|
||
// We're about to actually draw a frame.
|
||
mFrameInProgress = true;
|
||
|
||
// If the widget size changed, we have to force a MakeCurrent
|
||
// to make sure that GL sees the updated widget size.
|
||
if (mWidgetSize.width != width ||
|
||
mWidgetSize.height != height)
|
||
{
|
||
MakeCurrent(ForceMakeCurrent);
|
||
|
||
mWidgetSize.width = width;
|
||
mWidgetSize.height = height;
|
||
} else {
|
||
MakeCurrent();
|
||
}
|
||
|
||
mPixelsPerFrame = width * height;
|
||
mPixelsFilled = 0;
|
||
|
||
#if MOZ_WIDGET_ANDROID
|
||
TexturePoolOGL::Fill(gl());
|
||
#endif
|
||
|
||
// Default blend function implements "OVER"
|
||
mGLContext->fBlendFuncSeparate(LOCAL_GL_ONE, LOCAL_GL_ONE_MINUS_SRC_ALPHA,
|
||
LOCAL_GL_ONE, LOCAL_GL_ONE_MINUS_SRC_ALPHA);
|
||
mGLContext->fEnable(LOCAL_GL_BLEND);
|
||
|
||
// Make sure SCISSOR is enabled before setting the render target, since the RT
|
||
// assumes scissor is enabled while it does clears.
|
||
mGLContext->fEnable(LOCAL_GL_SCISSOR_TEST);
|
||
|
||
// Prefer the native windowing system's provided window size for the viewport.
|
||
IntSize viewportSize = mGLContext->GetTargetSize().valueOr(mWidgetSize);
|
||
if (viewportSize != mWidgetSize) {
|
||
mGLContext->fScissor(0, 0, viewportSize.width, viewportSize.height);
|
||
}
|
||
|
||
RefPtr<CompositingRenderTargetOGL> rt =
|
||
CompositingRenderTargetOGL::RenderTargetForWindow(this, viewportSize);
|
||
SetRenderTarget(rt);
|
||
|
||
#ifdef DEBUG
|
||
mWindowRenderTarget = mCurrentRenderTarget;
|
||
#endif
|
||
|
||
if (aClipRectOut && !aClipRectIn) {
|
||
aClipRectOut->SetRect(0, 0, width, height);
|
||
}
|
||
|
||
// If the Android compositor is being used, this clear will be done in
|
||
// DrawWindowUnderlay. Make sure the bits used here match up with those used
|
||
// in mobile/android/base/gfx/LayerRenderer.java
|
||
#ifndef MOZ_WIDGET_ANDROID
|
||
mGLContext->fClearColor(0.0, 0.0, 0.0, 0.0);
|
||
mGLContext->fClear(LOCAL_GL_COLOR_BUFFER_BIT | LOCAL_GL_DEPTH_BUFFER_BIT);
|
||
#endif
|
||
}
|
||
|
||
void
|
||
CompositorOGL::CreateFBOWithTexture(const IntRect& aRect, bool aCopyFromSource,
|
||
GLuint aSourceFrameBuffer,
|
||
GLuint *aFBO, GLuint *aTexture)
|
||
{
|
||
// we're about to create a framebuffer backed by textures to use as an intermediate
|
||
// surface. What to do if its size (as given by aRect) would exceed the
|
||
// maximum texture size supported by the GL? The present code chooses the compromise
|
||
// of just clamping the framebuffer's size to the max supported size.
|
||
// This gives us a lower resolution rendering of the intermediate surface (children layers).
|
||
// See bug 827170 for a discussion.
|
||
IntRect clampedRect = aRect;
|
||
int32_t maxTexSize = GetMaxTextureSize();
|
||
clampedRect.width = std::min(clampedRect.width, maxTexSize);
|
||
clampedRect.height = std::min(clampedRect.height, maxTexSize);
|
||
|
||
GLuint tex, fbo;
|
||
|
||
mGLContext->fActiveTexture(LOCAL_GL_TEXTURE0);
|
||
mGLContext->fGenTextures(1, &tex);
|
||
mGLContext->fBindTexture(mFBOTextureTarget, tex);
|
||
|
||
if (aCopyFromSource) {
|
||
GLuint curFBO = mCurrentRenderTarget->GetFBO();
|
||
if (curFBO != aSourceFrameBuffer) {
|
||
mGLContext->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, aSourceFrameBuffer);
|
||
}
|
||
|
||
// We're going to create an RGBA temporary fbo. But to
|
||
// CopyTexImage() from the current framebuffer, the framebuffer's
|
||
// format has to be compatible with the new texture's. So we
|
||
// check the format of the framebuffer here and take a slow path
|
||
// if it's incompatible.
|
||
GLenum format =
|
||
GetFrameBufferInternalFormat(gl(), aSourceFrameBuffer, mWidget);
|
||
|
||
bool isFormatCompatibleWithRGBA
|
||
= gl()->IsGLES() ? (format == LOCAL_GL_RGBA)
|
||
: true;
|
||
|
||
if (isFormatCompatibleWithRGBA) {
|
||
mGLContext->fCopyTexImage2D(mFBOTextureTarget,
|
||
0,
|
||
LOCAL_GL_RGBA,
|
||
clampedRect.x, FlipY(clampedRect.y + clampedRect.height),
|
||
clampedRect.width, clampedRect.height,
|
||
0);
|
||
} else {
|
||
// Curses, incompatible formats. Take a slow path.
|
||
|
||
// RGBA
|
||
size_t bufferSize = clampedRect.width * clampedRect.height * 4;
|
||
auto buf = MakeUnique<uint8_t[]>(bufferSize);
|
||
|
||
mGLContext->fReadPixels(clampedRect.x, clampedRect.y,
|
||
clampedRect.width, clampedRect.height,
|
||
LOCAL_GL_RGBA,
|
||
LOCAL_GL_UNSIGNED_BYTE,
|
||
buf.get());
|
||
mGLContext->fTexImage2D(mFBOTextureTarget,
|
||
0,
|
||
LOCAL_GL_RGBA,
|
||
clampedRect.width, clampedRect.height,
|
||
0,
|
||
LOCAL_GL_RGBA,
|
||
LOCAL_GL_UNSIGNED_BYTE,
|
||
buf.get());
|
||
}
|
||
GLenum error = mGLContext->fGetError();
|
||
if (error != LOCAL_GL_NO_ERROR) {
|
||
nsAutoCString msg;
|
||
msg.AppendPrintf("Texture initialization failed! -- error 0x%x, Source %d, Source format %d, RGBA Compat %d",
|
||
error, aSourceFrameBuffer, format, isFormatCompatibleWithRGBA);
|
||
NS_ERROR(msg.get());
|
||
}
|
||
} else {
|
||
mGLContext->fTexImage2D(mFBOTextureTarget,
|
||
0,
|
||
LOCAL_GL_RGBA,
|
||
clampedRect.width, clampedRect.height,
|
||
0,
|
||
LOCAL_GL_RGBA,
|
||
LOCAL_GL_UNSIGNED_BYTE,
|
||
nullptr);
|
||
}
|
||
mGLContext->fTexParameteri(mFBOTextureTarget, LOCAL_GL_TEXTURE_MIN_FILTER,
|
||
LOCAL_GL_LINEAR);
|
||
mGLContext->fTexParameteri(mFBOTextureTarget, LOCAL_GL_TEXTURE_MAG_FILTER,
|
||
LOCAL_GL_LINEAR);
|
||
mGLContext->fTexParameteri(mFBOTextureTarget, LOCAL_GL_TEXTURE_WRAP_S,
|
||
LOCAL_GL_CLAMP_TO_EDGE);
|
||
mGLContext->fTexParameteri(mFBOTextureTarget, LOCAL_GL_TEXTURE_WRAP_T,
|
||
LOCAL_GL_CLAMP_TO_EDGE);
|
||
mGLContext->fBindTexture(mFBOTextureTarget, 0);
|
||
|
||
mGLContext->fGenFramebuffers(1, &fbo);
|
||
|
||
*aFBO = fbo;
|
||
*aTexture = tex;
|
||
}
|
||
|
||
ShaderConfigOGL
|
||
CompositorOGL::GetShaderConfigFor(Effect *aEffect,
|
||
MaskType aMask,
|
||
gfx::CompositionOp aOp,
|
||
bool aColorMatrix,
|
||
bool aDEAAEnabled) const
|
||
{
|
||
ShaderConfigOGL config;
|
||
|
||
switch(aEffect->mType) {
|
||
case EffectTypes::SOLID_COLOR:
|
||
config.SetRenderColor(true);
|
||
break;
|
||
case EffectTypes::YCBCR:
|
||
config.SetYCbCr(true);
|
||
break;
|
||
case EffectTypes::NV12:
|
||
config.SetNV12(true);
|
||
config.SetTextureTarget(LOCAL_GL_TEXTURE_RECTANGLE_ARB);
|
||
break;
|
||
case EffectTypes::COMPONENT_ALPHA:
|
||
{
|
||
config.SetComponentAlpha(true);
|
||
EffectComponentAlpha* effectComponentAlpha =
|
||
static_cast<EffectComponentAlpha*>(aEffect);
|
||
gfx::SurfaceFormat format = effectComponentAlpha->mOnWhite->GetFormat();
|
||
config.SetRBSwap(format == gfx::SurfaceFormat::B8G8R8A8 ||
|
||
format == gfx::SurfaceFormat::B8G8R8X8);
|
||
break;
|
||
}
|
||
case EffectTypes::RENDER_TARGET:
|
||
config.SetTextureTarget(mFBOTextureTarget);
|
||
break;
|
||
default:
|
||
{
|
||
MOZ_ASSERT(aEffect->mType == EffectTypes::RGB);
|
||
TexturedEffect* texturedEffect =
|
||
static_cast<TexturedEffect*>(aEffect);
|
||
TextureSourceOGL* source = texturedEffect->mTexture->AsSourceOGL();
|
||
MOZ_ASSERT_IF(source->GetTextureTarget() == LOCAL_GL_TEXTURE_EXTERNAL,
|
||
source->GetFormat() == gfx::SurfaceFormat::R8G8B8A8 ||
|
||
source->GetFormat() == gfx::SurfaceFormat::R8G8B8X8);
|
||
MOZ_ASSERT_IF(source->GetTextureTarget() == LOCAL_GL_TEXTURE_RECTANGLE_ARB,
|
||
source->GetFormat() == gfx::SurfaceFormat::R8G8B8A8 ||
|
||
source->GetFormat() == gfx::SurfaceFormat::R8G8B8X8 ||
|
||
source->GetFormat() == gfx::SurfaceFormat::R5G6B5_UINT16);
|
||
config = ShaderConfigFromTargetAndFormat(source->GetTextureTarget(),
|
||
source->GetFormat());
|
||
break;
|
||
}
|
||
}
|
||
config.SetColorMatrix(aColorMatrix);
|
||
config.SetMask2D(aMask == MaskType::Mask2d);
|
||
config.SetMask3D(aMask == MaskType::Mask3d);
|
||
config.SetDEAA(aDEAAEnabled);
|
||
return config;
|
||
}
|
||
|
||
ShaderProgramOGL*
|
||
CompositorOGL::GetShaderProgramFor(const ShaderConfigOGL &aConfig)
|
||
{
|
||
std::map<ShaderConfigOGL, ShaderProgramOGL *>::iterator iter = mPrograms.find(aConfig);
|
||
if (iter != mPrograms.end())
|
||
return iter->second;
|
||
|
||
ProgramProfileOGL profile = ProgramProfileOGL::GetProfileFor(aConfig);
|
||
ShaderProgramOGL *shader = new ShaderProgramOGL(gl(), profile);
|
||
if (!shader->Initialize()) {
|
||
delete shader;
|
||
return nullptr;
|
||
}
|
||
|
||
mPrograms[aConfig] = shader;
|
||
return shader;
|
||
}
|
||
|
||
void
|
||
CompositorOGL::ActivateProgram(ShaderProgramOGL* aProg)
|
||
{
|
||
if (mCurrentProgram != aProg) {
|
||
gl()->fUseProgram(aProg->GetProgram());
|
||
mCurrentProgram = aProg;
|
||
}
|
||
}
|
||
|
||
void
|
||
CompositorOGL::ResetProgram()
|
||
{
|
||
mCurrentProgram = nullptr;
|
||
}
|
||
|
||
|
||
|
||
static bool SetBlendMode(GLContext* aGL, gfx::CompositionOp aBlendMode, bool aIsPremultiplied = true)
|
||
{
|
||
if (aBlendMode == gfx::CompositionOp::OP_OVER && aIsPremultiplied) {
|
||
return false;
|
||
}
|
||
|
||
GLenum srcBlend;
|
||
GLenum dstBlend;
|
||
GLenum srcAlphaBlend = LOCAL_GL_ONE;
|
||
GLenum dstAlphaBlend = LOCAL_GL_ONE_MINUS_SRC_ALPHA;
|
||
|
||
switch (aBlendMode) {
|
||
case gfx::CompositionOp::OP_OVER:
|
||
MOZ_ASSERT(!aIsPremultiplied);
|
||
srcBlend = LOCAL_GL_SRC_ALPHA;
|
||
dstBlend = LOCAL_GL_ONE_MINUS_SRC_ALPHA;
|
||
break;
|
||
case gfx::CompositionOp::OP_SOURCE:
|
||
srcBlend = aIsPremultiplied ? LOCAL_GL_ONE : LOCAL_GL_SRC_ALPHA;
|
||
dstBlend = LOCAL_GL_ZERO;
|
||
srcAlphaBlend = LOCAL_GL_ONE;
|
||
dstAlphaBlend = LOCAL_GL_ZERO;
|
||
break;
|
||
default:
|
||
MOZ_ASSERT_UNREACHABLE("Unsupported blend mode!");
|
||
return false;
|
||
}
|
||
|
||
aGL->fBlendFuncSeparate(srcBlend, dstBlend,
|
||
srcAlphaBlend, dstAlphaBlend);
|
||
return true;
|
||
}
|
||
|
||
gfx::Point3D
|
||
CompositorOGL::GetLineCoefficients(const gfx::Point& aPoint1,
|
||
const gfx::Point& aPoint2)
|
||
{
|
||
// Return standard coefficients for a line between aPoint1 and aPoint2
|
||
// for standard line equation:
|
||
//
|
||
// Ax + By + C = 0
|
||
//
|
||
// A = (p1.y – p2.y)
|
||
// B = (p2.x – p1.x)
|
||
// C = (p1.x * p2.y) – (p2.x * p1.y)
|
||
|
||
gfx::Point3D coeffecients;
|
||
coeffecients.x = aPoint1.y - aPoint2.y;
|
||
coeffecients.y = aPoint2.x - aPoint1.x;
|
||
coeffecients.z = aPoint1.x * aPoint2.y - aPoint2.x * aPoint1.y;
|
||
|
||
coeffecients *= 1.0f / sqrtf(coeffecients.x * coeffecients.x +
|
||
coeffecients.y * coeffecients.y);
|
||
|
||
// Offset outwards by 0.5 pixel as the edge is considered to be 1 pixel
|
||
// wide and included within the interior of the polygon
|
||
coeffecients.z += 0.5f;
|
||
|
||
return coeffecients;
|
||
}
|
||
|
||
void
|
||
CompositorOGL::DrawQuad(const Rect& aRect,
|
||
const Rect& aClipRect,
|
||
const EffectChain &aEffectChain,
|
||
Float aOpacity,
|
||
const gfx::Matrix4x4& aTransform,
|
||
const gfx::Rect& aVisibleRect)
|
||
{
|
||
PROFILER_LABEL("CompositorOGL", "DrawQuad",
|
||
js::ProfileEntry::Category::GRAPHICS);
|
||
|
||
MOZ_ASSERT(mFrameInProgress, "frame not started");
|
||
MOZ_ASSERT(mCurrentRenderTarget, "No destination");
|
||
|
||
if (aEffectChain.mPrimaryEffect->mType == EffectTypes::VR_DISTORTION) {
|
||
DrawVRDistortion(aRect, aClipRect, aEffectChain, aOpacity, aTransform);
|
||
return;
|
||
}
|
||
|
||
IntPoint offset = mCurrentRenderTarget->GetOrigin();
|
||
Rect renderBound = mRenderBound;
|
||
renderBound.IntersectRect(renderBound, aClipRect);
|
||
renderBound.MoveBy(offset);
|
||
|
||
Rect destRect = aTransform.TransformAndClipBounds(aRect, renderBound);
|
||
|
||
// XXX: This doesn't handle 3D transforms. It also doesn't handled rotated
|
||
// quads. Fix me.
|
||
mPixelsFilled += destRect.width * destRect.height;
|
||
|
||
// Do a simple culling if this rect is out of target buffer.
|
||
// Inflate a small size to avoid some numerical imprecision issue.
|
||
destRect.Inflate(1, 1);
|
||
destRect.MoveBy(-offset);
|
||
if (!mRenderBound.Intersects(destRect)) {
|
||
return;
|
||
}
|
||
|
||
LayerScope::DrawBegin();
|
||
|
||
Rect clipRect = aClipRect;
|
||
// aClipRect is in destination coordinate space (after all
|
||
// transforms and offsets have been applied) so if our
|
||
// drawing is going to be shifted by mRenderOffset then we need
|
||
// to shift the clip rect by the same amount.
|
||
if (!mTarget && mCurrentRenderTarget->IsWindow()) {
|
||
clipRect.MoveBy(mRenderOffset.x, mRenderOffset.y);
|
||
}
|
||
IntRect intClipRect;
|
||
clipRect.ToIntRect(&intClipRect);
|
||
|
||
gl()->fScissor(intClipRect.x, FlipY(intClipRect.y + intClipRect.height),
|
||
intClipRect.width, intClipRect.height);
|
||
|
||
MaskType maskType;
|
||
EffectMask* effectMask;
|
||
TextureSourceOGL* sourceMask = nullptr;
|
||
gfx::Matrix4x4 maskQuadTransform;
|
||
if (aEffectChain.mSecondaryEffects[EffectTypes::MASK]) {
|
||
effectMask = static_cast<EffectMask*>(aEffectChain.mSecondaryEffects[EffectTypes::MASK].get());
|
||
sourceMask = effectMask->mMaskTexture->AsSourceOGL();
|
||
|
||
// NS_ASSERTION(textureMask->IsAlpha(),
|
||
// "OpenGL mask layers must be backed by alpha surfaces");
|
||
|
||
// We're assuming that the gl backend won't cheat and use NPOT
|
||
// textures when glContext says it can't (which seems to happen
|
||
// on a mac when you force POT textures)
|
||
IntSize maskSize = CalculatePOTSize(effectMask->mSize, mGLContext);
|
||
|
||
const gfx::Matrix4x4& maskTransform = effectMask->mMaskTransform;
|
||
NS_ASSERTION(maskTransform.Is2D(), "How did we end up with a 3D transform here?!");
|
||
Rect bounds = Rect(Point(), Size(maskSize));
|
||
bounds = maskTransform.As2D().TransformBounds(bounds);
|
||
|
||
maskQuadTransform._11 = 1.0f/bounds.width;
|
||
maskQuadTransform._22 = 1.0f/bounds.height;
|
||
maskQuadTransform._41 = float(-bounds.x)/bounds.width;
|
||
maskQuadTransform._42 = float(-bounds.y)/bounds.height;
|
||
|
||
maskType = effectMask->mIs3D
|
||
? MaskType::Mask3d
|
||
: MaskType::Mask2d;
|
||
} else {
|
||
maskType = MaskType::MaskNone;
|
||
}
|
||
|
||
// Determine the color if this is a color shader and fold the opacity into
|
||
// the color since color shaders don't have an opacity uniform.
|
||
Color color;
|
||
if (aEffectChain.mPrimaryEffect->mType == EffectTypes::SOLID_COLOR) {
|
||
EffectSolidColor* effectSolidColor =
|
||
static_cast<EffectSolidColor*>(aEffectChain.mPrimaryEffect.get());
|
||
color = effectSolidColor->mColor;
|
||
|
||
Float opacity = aOpacity * color.a;
|
||
color.r *= opacity;
|
||
color.g *= opacity;
|
||
color.b *= opacity;
|
||
color.a = opacity;
|
||
|
||
// We can fold opacity into the color, so no need to consider it further.
|
||
aOpacity = 1.f;
|
||
}
|
||
|
||
gfx::CompositionOp blendMode = gfx::CompositionOp::OP_OVER;
|
||
if (aEffectChain.mSecondaryEffects[EffectTypes::BLEND_MODE]) {
|
||
EffectBlendMode *blendEffect =
|
||
static_cast<EffectBlendMode*>(aEffectChain.mSecondaryEffects[EffectTypes::BLEND_MODE].get());
|
||
blendMode = blendEffect->mBlendMode;
|
||
}
|
||
|
||
// Only apply DEAA to quads that have been transformed such that aliasing
|
||
// could be visible
|
||
bool bEnableAA = gfxPrefs::LayersDEAAEnabled() &&
|
||
!aTransform.Is2DIntegerTranslation();
|
||
|
||
bool colorMatrix = aEffectChain.mSecondaryEffects[EffectTypes::COLOR_MATRIX];
|
||
ShaderConfigOGL config = GetShaderConfigFor(aEffectChain.mPrimaryEffect,
|
||
maskType, blendMode, colorMatrix,
|
||
bEnableAA);
|
||
config.SetOpacity(aOpacity != 1.f);
|
||
ShaderProgramOGL *program = GetShaderProgramFor(config);
|
||
ActivateProgram(program);
|
||
program->SetProjectionMatrix(mProjMatrix);
|
||
program->SetLayerTransform(aTransform);
|
||
LayerScope::SetLayerTransform(aTransform);
|
||
if (colorMatrix) {
|
||
EffectColorMatrix* effectColorMatrix =
|
||
static_cast<EffectColorMatrix*>(aEffectChain.mSecondaryEffects[EffectTypes::COLOR_MATRIX].get());
|
||
program->SetColorMatrix(effectColorMatrix->mColorMatrix);
|
||
}
|
||
|
||
program->SetRenderOffset(offset.x, offset.y);
|
||
LayerScope::SetRenderOffset(offset.x, offset.y);
|
||
|
||
if (aOpacity != 1.f)
|
||
program->SetLayerOpacity(aOpacity);
|
||
if (config.mFeatures & ENABLE_TEXTURE_RECT) {
|
||
TexturedEffect* texturedEffect =
|
||
static_cast<TexturedEffect*>(aEffectChain.mPrimaryEffect.get());
|
||
TextureSourceOGL* source = texturedEffect->mTexture->AsSourceOGL();
|
||
// This is used by IOSurface that use 0,0...w,h coordinate rather then 0,0..1,1.
|
||
program->SetTexCoordMultiplier(source->GetSize().width, source->GetSize().height);
|
||
}
|
||
|
||
// XXX kip - These calculations could be performed once per layer rather than
|
||
// for every tile. This might belong in Compositor.cpp once DEAA
|
||
// is implemented for DirectX.
|
||
if (bEnableAA) {
|
||
// Calculate the transformed vertices of aVisibleRect in screen space
|
||
// pixels, mirroring the calculations in the vertex shader
|
||
Matrix4x4 flatTransform = aTransform;
|
||
flatTransform.PostTranslate(-offset.x, -offset.y, 0.0f);
|
||
flatTransform *= mProjMatrix;
|
||
|
||
Rect viewportClip = Rect(-1.0f, -1.0f, 2.0f, 2.0f);
|
||
size_t edgeCount = 0;
|
||
Point3D coefficients[4];
|
||
|
||
Point points[Matrix4x4::kTransformAndClipRectMaxVerts];
|
||
size_t pointCount = flatTransform.TransformAndClipRect(aVisibleRect, viewportClip, points);
|
||
for (size_t i = 0; i < pointCount; i++) {
|
||
points[i] = Point((points[i].x * 0.5f + 0.5f) * mViewportSize.width,
|
||
(points[i].y * 0.5f + 0.5f) * mViewportSize.height);
|
||
}
|
||
if (pointCount > 2) {
|
||
// Use shoelace formula on a triangle in the clipped quad to determine if
|
||
// winding order is reversed. Iterate through the triangles until one is
|
||
// found with a non-zero area.
|
||
float winding = 0.0f;
|
||
size_t wp = 0;
|
||
while (winding == 0.0f && wp < pointCount) {
|
||
int wp1 = (wp + 1) % pointCount;
|
||
int wp2 = (wp + 2) % pointCount;
|
||
winding = (points[wp1].x - points[wp].x) * (points[wp1].y + points[wp].y) +
|
||
(points[wp2].x - points[wp1].x) * (points[wp2].y + points[wp1].y) +
|
||
(points[wp].x - points[wp2].x) * (points[wp].y + points[wp2].y);
|
||
wp++;
|
||
}
|
||
bool frontFacing = winding >= 0.0f;
|
||
|
||
// Calculate the line coefficients used by the DEAA shader to determine the
|
||
// sub-pixel coverage of the edge pixels
|
||
for (size_t i=0; i<pointCount; i++) {
|
||
const Point& p1 = points[i];
|
||
const Point& p2 = points[(i + 1) % pointCount];
|
||
// Create a DEAA edge for any non-straight lines, to a maximum of 4
|
||
if (p1.x != p2.x && p1.y != p2.y && edgeCount < 4) {
|
||
if (frontFacing) {
|
||
coefficients[edgeCount++] = GetLineCoefficients(p2, p1);
|
||
} else {
|
||
coefficients[edgeCount++] = GetLineCoefficients(p1, p2);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// The coefficients that are not needed must not cull any fragments.
|
||
// We fill these unused coefficients with a clipping plane that has no
|
||
// effect.
|
||
for (size_t i = edgeCount; i < 4; i++) {
|
||
coefficients[i] = Point3D(0.0f, 1.0f, mViewportSize.height);
|
||
}
|
||
|
||
// Set uniforms required by DEAA shader
|
||
Matrix4x4 transformInverted = aTransform;
|
||
transformInverted.Invert();
|
||
program->SetLayerTransformInverse(transformInverted);
|
||
program->SetDEAAEdges(coefficients);
|
||
program->SetVisibleCenter(aVisibleRect.Center());
|
||
program->SetViewportSize(mViewportSize);
|
||
}
|
||
|
||
bool didSetBlendMode = false;
|
||
|
||
switch (aEffectChain.mPrimaryEffect->mType) {
|
||
case EffectTypes::SOLID_COLOR: {
|
||
program->SetRenderColor(color);
|
||
|
||
if (maskType != MaskType::MaskNone) {
|
||
BindMaskForProgram(program, sourceMask, LOCAL_GL_TEXTURE0, maskQuadTransform);
|
||
}
|
||
|
||
didSetBlendMode = SetBlendMode(gl(), blendMode);
|
||
|
||
BindAndDrawQuad(program, aRect);
|
||
}
|
||
break;
|
||
|
||
case EffectTypes::RGB: {
|
||
TexturedEffect* texturedEffect =
|
||
static_cast<TexturedEffect*>(aEffectChain.mPrimaryEffect.get());
|
||
TextureSource *source = texturedEffect->mTexture;
|
||
|
||
didSetBlendMode = SetBlendMode(gl(), blendMode, texturedEffect->mPremultiplied);
|
||
|
||
gfx::Filter filter = texturedEffect->mFilter;
|
||
Matrix4x4 textureTransform = source->AsSourceOGL()->GetTextureTransform();
|
||
|
||
#ifdef MOZ_WIDGET_ANDROID
|
||
gfx::Matrix textureTransform2D;
|
||
if (filter != gfx::Filter::POINT &&
|
||
aTransform.Is2DIntegerTranslation() &&
|
||
textureTransform.Is2D(&textureTransform2D) &&
|
||
textureTransform2D.HasOnlyIntegerTranslation()) {
|
||
// On Android we encounter small resampling errors in what should be
|
||
// pixel-aligned compositing operations. This works around them. This
|
||
// code should not be needed!
|
||
filter = gfx::Filter::POINT;
|
||
}
|
||
#endif
|
||
source->AsSourceOGL()->BindTexture(LOCAL_GL_TEXTURE0, filter);
|
||
|
||
program->SetTextureUnit(0);
|
||
program->SetTextureTransform(textureTransform);
|
||
|
||
if (maskType != MaskType::MaskNone) {
|
||
BindMaskForProgram(program, sourceMask, LOCAL_GL_TEXTURE1, maskQuadTransform);
|
||
}
|
||
|
||
BindAndDrawQuadWithTextureRect(program, aRect, texturedEffect->mTextureCoords, source);
|
||
}
|
||
break;
|
||
case EffectTypes::YCBCR: {
|
||
EffectYCbCr* effectYCbCr =
|
||
static_cast<EffectYCbCr*>(aEffectChain.mPrimaryEffect.get());
|
||
TextureSource* sourceYCbCr = effectYCbCr->mTexture;
|
||
const int Y = 0, Cb = 1, Cr = 2;
|
||
TextureSourceOGL* sourceY = sourceYCbCr->GetSubSource(Y)->AsSourceOGL();
|
||
TextureSourceOGL* sourceCb = sourceYCbCr->GetSubSource(Cb)->AsSourceOGL();
|
||
TextureSourceOGL* sourceCr = sourceYCbCr->GetSubSource(Cr)->AsSourceOGL();
|
||
|
||
if (!sourceY || !sourceCb || !sourceCr) {
|
||
NS_WARNING("Invalid layer texture.");
|
||
return;
|
||
}
|
||
|
||
sourceY->BindTexture(LOCAL_GL_TEXTURE0, effectYCbCr->mFilter);
|
||
sourceCb->BindTexture(LOCAL_GL_TEXTURE1, effectYCbCr->mFilter);
|
||
sourceCr->BindTexture(LOCAL_GL_TEXTURE2, effectYCbCr->mFilter);
|
||
|
||
program->SetYCbCrTextureUnits(Y, Cb, Cr);
|
||
program->SetTextureTransform(Matrix4x4());
|
||
|
||
if (maskType != MaskType::MaskNone) {
|
||
BindMaskForProgram(program, sourceMask, LOCAL_GL_TEXTURE3, maskQuadTransform);
|
||
}
|
||
didSetBlendMode = SetBlendMode(gl(), blendMode);
|
||
BindAndDrawQuadWithTextureRect(program,
|
||
aRect,
|
||
effectYCbCr->mTextureCoords,
|
||
sourceYCbCr->GetSubSource(Y));
|
||
}
|
||
break;
|
||
case EffectTypes::NV12: {
|
||
EffectNV12* effectNV12 =
|
||
static_cast<EffectNV12*>(aEffectChain.mPrimaryEffect.get());
|
||
TextureSource* sourceNV12 = effectNV12->mTexture;
|
||
const int Y = 0, CbCr = 1;
|
||
TextureSourceOGL* sourceY = sourceNV12->GetSubSource(Y)->AsSourceOGL();
|
||
TextureSourceOGL* sourceCbCr = sourceNV12->GetSubSource(CbCr)->AsSourceOGL();
|
||
|
||
if (!sourceY || !sourceCbCr) {
|
||
NS_WARNING("Invalid layer texture.");
|
||
return;
|
||
}
|
||
|
||
sourceY->BindTexture(LOCAL_GL_TEXTURE0, effectNV12->mFilter);
|
||
sourceCbCr->BindTexture(LOCAL_GL_TEXTURE1, effectNV12->mFilter);
|
||
|
||
if (config.mFeatures & ENABLE_TEXTURE_RECT) {
|
||
// This is used by IOSurface that use 0,0...w,h coordinate rather then 0,0..1,1.
|
||
program->SetCbCrTexCoordMultiplier(sourceCbCr->GetSize().width, sourceCbCr->GetSize().height);
|
||
}
|
||
|
||
program->SetNV12TextureUnits(Y, CbCr);
|
||
program->SetTextureTransform(Matrix4x4());
|
||
|
||
if (maskType != MaskType::MaskNone) {
|
||
BindMaskForProgram(program, sourceMask, LOCAL_GL_TEXTURE2, maskQuadTransform);
|
||
}
|
||
didSetBlendMode = SetBlendMode(gl(), blendMode);
|
||
BindAndDrawQuadWithTextureRect(program,
|
||
aRect,
|
||
effectNV12->mTextureCoords,
|
||
sourceNV12->GetSubSource(Y));
|
||
}
|
||
break;
|
||
case EffectTypes::RENDER_TARGET: {
|
||
EffectRenderTarget* effectRenderTarget =
|
||
static_cast<EffectRenderTarget*>(aEffectChain.mPrimaryEffect.get());
|
||
RefPtr<CompositingRenderTargetOGL> surface
|
||
= static_cast<CompositingRenderTargetOGL*>(effectRenderTarget->mRenderTarget.get());
|
||
|
||
surface->BindTexture(LOCAL_GL_TEXTURE0, mFBOTextureTarget);
|
||
|
||
// Drawing is always flipped, but when copying between surfaces we want to avoid
|
||
// this, so apply a flip here to cancel the other one out.
|
||
Matrix transform;
|
||
transform.PreTranslate(0.0, 1.0);
|
||
transform.PreScale(1.0f, -1.0f);
|
||
program->SetTextureTransform(Matrix4x4::From2D(transform));
|
||
program->SetTextureUnit(0);
|
||
|
||
if (maskType != MaskType::MaskNone) {
|
||
BindMaskForProgram(program, sourceMask, LOCAL_GL_TEXTURE1, maskQuadTransform);
|
||
}
|
||
|
||
if (config.mFeatures & ENABLE_TEXTURE_RECT) {
|
||
// 2DRect case, get the multiplier right for a sampler2DRect
|
||
program->SetTexCoordMultiplier(aRect.width, aRect.height);
|
||
}
|
||
|
||
// Drawing is always flipped, but when copying between surfaces we want to avoid
|
||
// this. Pass true for the flip parameter to introduce a second flip
|
||
// that cancels the other one out.
|
||
didSetBlendMode = SetBlendMode(gl(), blendMode);
|
||
BindAndDrawQuad(program, aRect);
|
||
}
|
||
break;
|
||
case EffectTypes::COMPONENT_ALPHA: {
|
||
MOZ_ASSERT(gfxPrefs::ComponentAlphaEnabled());
|
||
MOZ_ASSERT(blendMode == gfx::CompositionOp::OP_OVER, "Can't support blend modes with component alpha!");
|
||
EffectComponentAlpha* effectComponentAlpha =
|
||
static_cast<EffectComponentAlpha*>(aEffectChain.mPrimaryEffect.get());
|
||
TextureSourceOGL* sourceOnWhite = effectComponentAlpha->mOnWhite->AsSourceOGL();
|
||
TextureSourceOGL* sourceOnBlack = effectComponentAlpha->mOnBlack->AsSourceOGL();
|
||
|
||
if (!sourceOnBlack->IsValid() ||
|
||
!sourceOnWhite->IsValid()) {
|
||
NS_WARNING("Invalid layer texture for component alpha");
|
||
return;
|
||
}
|
||
|
||
sourceOnBlack->BindTexture(LOCAL_GL_TEXTURE0, effectComponentAlpha->mFilter);
|
||
sourceOnWhite->BindTexture(LOCAL_GL_TEXTURE1, effectComponentAlpha->mFilter);
|
||
|
||
program->SetBlackTextureUnit(0);
|
||
program->SetWhiteTextureUnit(1);
|
||
program->SetTextureTransform(Matrix4x4());
|
||
|
||
if (maskType != MaskType::MaskNone) {
|
||
BindMaskForProgram(program, sourceMask, LOCAL_GL_TEXTURE2, maskQuadTransform);
|
||
}
|
||
// Pass 1.
|
||
gl()->fBlendFuncSeparate(LOCAL_GL_ZERO, LOCAL_GL_ONE_MINUS_SRC_COLOR,
|
||
LOCAL_GL_ONE, LOCAL_GL_ONE);
|
||
program->SetTexturePass2(false);
|
||
BindAndDrawQuadWithTextureRect(program,
|
||
aRect,
|
||
effectComponentAlpha->mTextureCoords,
|
||
effectComponentAlpha->mOnBlack);
|
||
|
||
// Pass 2.
|
||
gl()->fBlendFuncSeparate(LOCAL_GL_ONE, LOCAL_GL_ONE,
|
||
LOCAL_GL_ONE, LOCAL_GL_ONE);
|
||
|
||
#ifdef XP_MACOSX
|
||
if (gl()->WorkAroundDriverBugs() &&
|
||
gl()->Vendor() == GLVendor::NVIDIA &&
|
||
!nsCocoaFeatures::OnMavericksOrLater()) {
|
||
// Bug 987497: With some GPUs the nvidia driver on 10.8 and below
|
||
// won't pick up the TexturePass2 uniform change below if we don't do
|
||
// something to force it. Re-activating the shader seems to be one way
|
||
// of achieving that.
|
||
GLint program;
|
||
mGLContext->fGetIntegerv(LOCAL_GL_CURRENT_PROGRAM, &program);
|
||
mGLContext->fUseProgram(program);
|
||
}
|
||
#endif
|
||
|
||
program->SetTexturePass2(true);
|
||
BindAndDrawQuadWithTextureRect(program,
|
||
aRect,
|
||
effectComponentAlpha->mTextureCoords,
|
||
effectComponentAlpha->mOnBlack);
|
||
|
||
mGLContext->fBlendFuncSeparate(LOCAL_GL_ONE, LOCAL_GL_ONE_MINUS_SRC_ALPHA,
|
||
LOCAL_GL_ONE, LOCAL_GL_ONE_MINUS_SRC_ALPHA);
|
||
}
|
||
break;
|
||
default:
|
||
MOZ_ASSERT(false, "Unhandled effect type");
|
||
break;
|
||
}
|
||
|
||
if (didSetBlendMode) {
|
||
gl()->fBlendFuncSeparate(LOCAL_GL_ONE, LOCAL_GL_ONE_MINUS_SRC_ALPHA,
|
||
LOCAL_GL_ONE, LOCAL_GL_ONE_MINUS_SRC_ALPHA);
|
||
}
|
||
|
||
// in case rendering has used some other GL context
|
||
MakeCurrent();
|
||
LayerScope::DrawEnd(mGLContext, aEffectChain, aRect.width, aRect.height);
|
||
}
|
||
|
||
void
|
||
CompositorOGL::EndFrame()
|
||
{
|
||
PROFILER_LABEL("CompositorOGL", "EndFrame",
|
||
js::ProfileEntry::Category::GRAPHICS);
|
||
|
||
MOZ_ASSERT(mCurrentRenderTarget == mWindowRenderTarget, "Rendering target not properly restored");
|
||
|
||
#ifdef MOZ_DUMP_PAINTING
|
||
if (gfxEnv::DumpCompositorTextures()) {
|
||
LayoutDeviceIntRect rect;
|
||
if (mUseExternalSurfaceSize) {
|
||
rect = LayoutDeviceIntRect(0, 0, mSurfaceSize.width, mSurfaceSize.height);
|
||
} else {
|
||
mWidget->GetBounds(rect);
|
||
}
|
||
RefPtr<DrawTarget> target = gfxPlatform::GetPlatform()->CreateOffscreenContentDrawTarget(IntSize(rect.width, rect.height), SurfaceFormat::B8G8R8A8);
|
||
if (target) {
|
||
CopyToTarget(target, nsIntPoint(), Matrix());
|
||
WriteSnapshotToDumpFile(this, target);
|
||
}
|
||
}
|
||
#endif
|
||
|
||
mContextStateTracker.PopOGLSection(gl(), "Frame");
|
||
|
||
mFrameInProgress = false;
|
||
|
||
if (mTarget) {
|
||
CopyToTarget(mTarget, mTargetBounds.TopLeft(), Matrix());
|
||
mGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, 0);
|
||
mCurrentRenderTarget = nullptr;
|
||
return;
|
||
}
|
||
|
||
if (mTexturePool) {
|
||
mTexturePool->EndFrame();
|
||
}
|
||
|
||
// If our window size changed during composition, we should discard the frame.
|
||
// We don't need to worry about rescheduling a composite, as widget
|
||
// implementations handle this in their expose event listeners.
|
||
// See bug 1184534. TODO: implement this for single-buffered targets?
|
||
IntSize targetSize = mGLContext->GetTargetSize().valueOr(mViewportSize);
|
||
if (!(mCurrentRenderTarget->IsWindow() && targetSize != mViewportSize)) {
|
||
mGLContext->SwapBuffers();
|
||
}
|
||
|
||
mCurrentRenderTarget = nullptr;
|
||
|
||
mGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, 0);
|
||
|
||
// Unbind all textures
|
||
mGLContext->fActiveTexture(LOCAL_GL_TEXTURE0);
|
||
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, 0);
|
||
if (!mGLContext->IsGLES()) {
|
||
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_RECTANGLE_ARB, 0);
|
||
}
|
||
|
||
mGLContext->fActiveTexture(LOCAL_GL_TEXTURE1);
|
||
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, 0);
|
||
if (!mGLContext->IsGLES()) {
|
||
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_RECTANGLE_ARB, 0);
|
||
}
|
||
|
||
mGLContext->fActiveTexture(LOCAL_GL_TEXTURE2);
|
||
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, 0);
|
||
if (!mGLContext->IsGLES()) {
|
||
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_RECTANGLE_ARB, 0);
|
||
}
|
||
}
|
||
|
||
void
|
||
CompositorOGL::EndFrameForExternalComposition(const gfx::Matrix& aTransform)
|
||
{
|
||
MOZ_ASSERT(!mTarget);
|
||
if (mTexturePool) {
|
||
mTexturePool->EndFrame();
|
||
}
|
||
}
|
||
|
||
void
|
||
CompositorOGL::SetDestinationSurfaceSize(const IntSize& aSize)
|
||
{
|
||
mSurfaceSize.width = aSize.width;
|
||
mSurfaceSize.height = aSize.height;
|
||
}
|
||
|
||
void
|
||
CompositorOGL::CopyToTarget(DrawTarget* aTarget, const nsIntPoint& aTopLeft, const gfx::Matrix& aTransform)
|
||
{
|
||
MOZ_ASSERT(aTarget);
|
||
IntRect rect;
|
||
if (mUseExternalSurfaceSize) {
|
||
rect = IntRect(0, 0, mSurfaceSize.width, mSurfaceSize.height);
|
||
} else {
|
||
rect = IntRect(0, 0, mWidgetSize.width, mWidgetSize.height);
|
||
}
|
||
GLint width = rect.width;
|
||
GLint height = rect.height;
|
||
|
||
if ((int64_t(width) * int64_t(height) * int64_t(4)) > INT32_MAX) {
|
||
NS_ERROR("Widget size too big - integer overflow!");
|
||
return;
|
||
}
|
||
|
||
mGLContext->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0);
|
||
|
||
if (!mGLContext->IsGLES()) {
|
||
// GLES2 promises that binding to any custom FBO will attach
|
||
// to GL_COLOR_ATTACHMENT0 attachment point.
|
||
mGLContext->fReadBuffer(LOCAL_GL_BACK);
|
||
}
|
||
|
||
RefPtr<DataSourceSurface> source =
|
||
Factory::CreateDataSourceSurface(rect.Size(), gfx::SurfaceFormat::B8G8R8A8);
|
||
if (NS_WARN_IF(!source)) {
|
||
return;
|
||
}
|
||
|
||
ReadPixelsIntoDataSurface(mGLContext, source);
|
||
|
||
// Map from GL space to Cairo space and reverse the world transform.
|
||
Matrix glToCairoTransform = aTransform;
|
||
glToCairoTransform.Invert();
|
||
glToCairoTransform.PreScale(1.0, -1.0);
|
||
glToCairoTransform.PreTranslate(0.0, -height);
|
||
|
||
glToCairoTransform.PostTranslate(-aTopLeft.x, -aTopLeft.y);
|
||
|
||
Matrix oldMatrix = aTarget->GetTransform();
|
||
aTarget->SetTransform(glToCairoTransform);
|
||
Rect floatRect = Rect(rect.x, rect.y, rect.width, rect.height);
|
||
aTarget->DrawSurface(source, floatRect, floatRect, DrawSurfaceOptions(), DrawOptions(1.0f, CompositionOp::OP_SOURCE));
|
||
aTarget->SetTransform(oldMatrix);
|
||
aTarget->Flush();
|
||
}
|
||
|
||
void
|
||
CompositorOGL::Pause()
|
||
{
|
||
#ifdef MOZ_WIDGET_ANDROID
|
||
if (!gl() || gl()->IsDestroyed())
|
||
return;
|
||
|
||
// ReleaseSurface internally calls MakeCurrent.
|
||
gl()->ReleaseSurface();
|
||
#endif
|
||
}
|
||
|
||
bool
|
||
CompositorOGL::Resume()
|
||
{
|
||
#if defined(MOZ_WIDGET_ANDROID) || defined(MOZ_WIDGET_UIKIT)
|
||
if (!gl() || gl()->IsDestroyed())
|
||
return false;
|
||
|
||
// RenewSurface internally calls MakeCurrent.
|
||
return gl()->RenewSurface();
|
||
#endif
|
||
return true;
|
||
}
|
||
|
||
already_AddRefed<DataTextureSource>
|
||
CompositorOGL::CreateDataTextureSource(TextureFlags aFlags)
|
||
{
|
||
return MakeAndAddRef<TextureImageTextureSourceOGL>(this, aFlags);
|
||
}
|
||
|
||
bool
|
||
CompositorOGL::SupportsPartialTextureUpdate()
|
||
{
|
||
return CanUploadSubTextures(mGLContext);
|
||
}
|
||
|
||
int32_t
|
||
CompositorOGL::GetMaxTextureSize() const
|
||
{
|
||
MOZ_ASSERT(mGLContext);
|
||
GLint texSize = 0;
|
||
mGLContext->fGetIntegerv(LOCAL_GL_MAX_TEXTURE_SIZE,
|
||
&texSize);
|
||
MOZ_ASSERT(texSize != 0);
|
||
return texSize;
|
||
}
|
||
|
||
void
|
||
CompositorOGL::MakeCurrent(MakeCurrentFlags aFlags) {
|
||
if (mDestroyed) {
|
||
NS_WARNING("Call on destroyed layer manager");
|
||
return;
|
||
}
|
||
mGLContext->MakeCurrent(aFlags & ForceMakeCurrent);
|
||
}
|
||
|
||
void
|
||
CompositorOGL::BindAndDrawQuads(ShaderProgramOGL *aProg,
|
||
int aQuads,
|
||
const Rect* aLayerRects,
|
||
const Rect* aTextureRects)
|
||
{
|
||
NS_ASSERTION(aProg->HasInitialized(), "Shader program not correctly initialized");
|
||
|
||
const GLuint coordAttribIndex = 0;
|
||
|
||
mGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, mQuadVBO);
|
||
mGLContext->fVertexAttribPointer(coordAttribIndex, 4,
|
||
LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0,
|
||
(GLvoid*) 0);
|
||
mGLContext->fEnableVertexAttribArray(coordAttribIndex);
|
||
|
||
aProg->SetLayerRects(aLayerRects);
|
||
if (aProg->GetTextureCount() > 0) {
|
||
aProg->SetTextureRects(aTextureRects);
|
||
}
|
||
|
||
// We are using GL_TRIANGLES here because the Mac Intel drivers fail to properly
|
||
// process uniform arrays with GL_TRIANGLE_STRIP. Go figure.
|
||
mGLContext->fDrawArrays(LOCAL_GL_TRIANGLES, 0, 6 * aQuads);
|
||
LayerScope::SetDrawRects(aQuads, aLayerRects, aTextureRects);
|
||
}
|
||
|
||
GLBlitTextureImageHelper*
|
||
CompositorOGL::BlitTextureImageHelper()
|
||
{
|
||
if (!mBlitTextureImageHelper) {
|
||
mBlitTextureImageHelper = MakeUnique<GLBlitTextureImageHelper>(this);
|
||
}
|
||
|
||
return mBlitTextureImageHelper.get();
|
||
}
|
||
|
||
|
||
|
||
GLuint
|
||
CompositorOGL::GetTemporaryTexture(GLenum aTarget, GLenum aUnit)
|
||
{
|
||
if (!mTexturePool) {
|
||
#ifdef MOZ_WIDGET_GONK
|
||
mTexturePool = new PerFrameTexturePoolOGL(gl());
|
||
#else
|
||
mTexturePool = new PerUnitTexturePoolOGL(gl());
|
||
#endif
|
||
}
|
||
return mTexturePool->GetTexture(aTarget, aUnit);
|
||
}
|
||
|
||
GLuint
|
||
PerUnitTexturePoolOGL::GetTexture(GLenum aTarget, GLenum aTextureUnit)
|
||
{
|
||
if (mTextureTarget == 0) {
|
||
mTextureTarget = aTarget;
|
||
}
|
||
MOZ_ASSERT(mTextureTarget == aTarget);
|
||
|
||
size_t index = aTextureUnit - LOCAL_GL_TEXTURE0;
|
||
// lazily grow the array of temporary textures
|
||
if (mTextures.Length() <= index) {
|
||
size_t prevLength = mTextures.Length();
|
||
mTextures.SetLength(index + 1);
|
||
for(unsigned int i = prevLength; i <= index; ++i) {
|
||
mTextures[i] = 0;
|
||
}
|
||
}
|
||
// lazily initialize the temporary textures
|
||
if (!mTextures[index]) {
|
||
if (!mGL->MakeCurrent()) {
|
||
return 0;
|
||
}
|
||
mGL->fGenTextures(1, &mTextures[index]);
|
||
mGL->fBindTexture(aTarget, mTextures[index]);
|
||
mGL->fTexParameteri(aTarget, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE);
|
||
mGL->fTexParameteri(aTarget, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE);
|
||
}
|
||
return mTextures[index];
|
||
}
|
||
|
||
void
|
||
PerUnitTexturePoolOGL::DestroyTextures()
|
||
{
|
||
if (mGL && mGL->MakeCurrent()) {
|
||
if (mTextures.Length() > 0) {
|
||
mGL->fDeleteTextures(mTextures.Length(), &mTextures[0]);
|
||
}
|
||
}
|
||
mTextures.SetLength(0);
|
||
}
|
||
|
||
void
|
||
PerFrameTexturePoolOGL::DestroyTextures()
|
||
{
|
||
if (!mGL->MakeCurrent()) {
|
||
return;
|
||
}
|
||
|
||
if (mUnusedTextures.Length() > 0) {
|
||
mGL->fDeleteTextures(mUnusedTextures.Length(), &mUnusedTextures[0]);
|
||
mUnusedTextures.Clear();
|
||
}
|
||
|
||
if (mCreatedTextures.Length() > 0) {
|
||
mGL->fDeleteTextures(mCreatedTextures.Length(), &mCreatedTextures[0]);
|
||
mCreatedTextures.Clear();
|
||
}
|
||
}
|
||
|
||
GLuint
|
||
PerFrameTexturePoolOGL::GetTexture(GLenum aTarget, GLenum)
|
||
{
|
||
if (mTextureTarget == 0) {
|
||
mTextureTarget = aTarget;
|
||
}
|
||
|
||
// The pool should always use the same texture target because it is illegal
|
||
// to change the target of an already exisiting gl texture.
|
||
// If we need to use several targets, a pool with several sub-pools (one per
|
||
// target) will have to be implemented.
|
||
// At the moment this pool is only used with tiling on b2g so we always need
|
||
// the same target.
|
||
MOZ_ASSERT(mTextureTarget == aTarget);
|
||
|
||
GLuint texture = 0;
|
||
|
||
if (!mUnusedTextures.IsEmpty()) {
|
||
// Try to reuse one from the unused pile first
|
||
texture = mUnusedTextures[0];
|
||
mUnusedTextures.RemoveElementAt(0);
|
||
} else if (mGL->MakeCurrent()) {
|
||
// There isn't one to reuse, create one.
|
||
mGL->fGenTextures(1, &texture);
|
||
mGL->fBindTexture(aTarget, texture);
|
||
mGL->fTexParameteri(aTarget, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE);
|
||
mGL->fTexParameteri(aTarget, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE);
|
||
}
|
||
|
||
if (texture) {
|
||
mCreatedTextures.AppendElement(texture);
|
||
}
|
||
|
||
return texture;
|
||
}
|
||
|
||
void
|
||
PerFrameTexturePoolOGL::EndFrame()
|
||
{
|
||
if (!mGL->MakeCurrent()) {
|
||
// this means the context got destroyed underneith us somehow, and the driver
|
||
// already has destroyed the textures.
|
||
mCreatedTextures.Clear();
|
||
mUnusedTextures.Clear();
|
||
return;
|
||
}
|
||
|
||
// Some platforms have issues unlocking Gralloc buffers even when they're
|
||
// rebound.
|
||
if (gfxPrefs::OverzealousGrallocUnlocking()) {
|
||
mUnusedTextures.AppendElements(mCreatedTextures);
|
||
mCreatedTextures.Clear();
|
||
}
|
||
|
||
// Delete unused textures
|
||
for (size_t i = 0; i < mUnusedTextures.Length(); i++) {
|
||
GLuint texture = mUnusedTextures[i];
|
||
mGL->fDeleteTextures(1, &texture);
|
||
}
|
||
mUnusedTextures.Clear();
|
||
|
||
// Move all created textures into the unused pile
|
||
mUnusedTextures.AppendElements(mCreatedTextures);
|
||
mCreatedTextures.Clear();
|
||
}
|
||
|
||
} // namespace layers
|
||
} // namespace mozilla
|