608 lines
20 KiB
C++
608 lines
20 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "mozilla/layers/Compositor.h"
|
|
#include "base/message_loop.h" // for MessageLoop
|
|
#include "mozilla/layers/CompositorBridgeParent.h" // for CompositorBridgeParent
|
|
#include "mozilla/layers/Effects.h" // for Effect, EffectChain, etc
|
|
#include "mozilla/layers/TextureClient.h"
|
|
#include "mozilla/layers/TextureHost.h"
|
|
#include "mozilla/layers/CompositorThread.h"
|
|
#include "mozilla/mozalloc.h" // for operator delete, etc
|
|
#include "gfx2DGlue.h"
|
|
#include "nsAppRunner.h"
|
|
|
|
namespace mozilla {
|
|
|
|
namespace layers {
|
|
|
|
Compositor::Compositor(widget::CompositorWidget* aWidget,
|
|
CompositorBridgeParent* aParent)
|
|
: mCompositorID(0)
|
|
, mDiagnosticTypes(DiagnosticTypes::NO_DIAGNOSTIC)
|
|
, mParent(aParent)
|
|
, mPixelsPerFrame(0)
|
|
, mPixelsFilled(0)
|
|
, mScreenRotation(ROTATION_0)
|
|
, mWidget(aWidget)
|
|
, mIsDestroyed(false)
|
|
#if defined(MOZ_WIDGET_ANDROID)
|
|
// If the default color isn't white for Fennec, there is a black
|
|
// flash before the first page of a tab is loaded.
|
|
, mClearColor(1.0, 1.0, 1.0, 1.0)
|
|
, mDefaultClearColor(1.0, 1.0, 1.0, 1.0)
|
|
#else
|
|
, mClearColor(0.0, 0.0, 0.0, 0.0)
|
|
, mDefaultClearColor(0.0, 0.0, 0.0, 0.0)
|
|
#endif
|
|
{
|
|
}
|
|
|
|
Compositor::~Compositor()
|
|
{
|
|
ReadUnlockTextures();
|
|
}
|
|
|
|
void
|
|
Compositor::Destroy()
|
|
{
|
|
ReadUnlockTextures();
|
|
FlushPendingNotifyNotUsed();
|
|
mIsDestroyed = true;
|
|
}
|
|
|
|
void
|
|
Compositor::EndFrame()
|
|
{
|
|
ReadUnlockTextures();
|
|
mLastCompositionEndTime = TimeStamp::Now();
|
|
}
|
|
|
|
void
|
|
Compositor::ReadUnlockTextures()
|
|
{
|
|
for (auto& texture : mUnlockAfterComposition) {
|
|
texture->ReadUnlock();
|
|
}
|
|
mUnlockAfterComposition.Clear();
|
|
}
|
|
|
|
void
|
|
Compositor::UnlockAfterComposition(TextureHost* aTexture)
|
|
{
|
|
mUnlockAfterComposition.AppendElement(aTexture);
|
|
}
|
|
|
|
void
|
|
Compositor::NotifyNotUsedAfterComposition(TextureHost* aTextureHost)
|
|
{
|
|
MOZ_ASSERT(!mIsDestroyed);
|
|
|
|
mNotifyNotUsedAfterComposition.AppendElement(aTextureHost);
|
|
|
|
// If Compositor holds many TextureHosts without compositing,
|
|
// the TextureHosts should be flushed to reduce memory consumption.
|
|
const int thresholdCount = 5;
|
|
const double thresholdSec = 2.0f;
|
|
if (mNotifyNotUsedAfterComposition.Length() > thresholdCount) {
|
|
TimeDuration duration = mLastCompositionEndTime ? TimeStamp::Now() - mLastCompositionEndTime : TimeDuration();
|
|
// Check if we could flush
|
|
if (duration.ToSeconds() > thresholdSec) {
|
|
FlushPendingNotifyNotUsed();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
Compositor::FlushPendingNotifyNotUsed()
|
|
{
|
|
for (auto& textureHost : mNotifyNotUsedAfterComposition) {
|
|
textureHost->CallNotifyNotUsed();
|
|
}
|
|
mNotifyNotUsedAfterComposition.Clear();
|
|
}
|
|
|
|
/* static */ void
|
|
Compositor::AssertOnCompositorThread()
|
|
{
|
|
MOZ_ASSERT(!CompositorThreadHolder::Loop() ||
|
|
CompositorThreadHolder::Loop() == MessageLoop::current(),
|
|
"Can only call this from the compositor thread!");
|
|
}
|
|
|
|
bool
|
|
Compositor::ShouldDrawDiagnostics(DiagnosticFlags aFlags)
|
|
{
|
|
if ((aFlags & DiagnosticFlags::TILE) && !(mDiagnosticTypes & DiagnosticTypes::TILE_BORDERS)) {
|
|
return false;
|
|
}
|
|
if ((aFlags & DiagnosticFlags::BIGIMAGE) &&
|
|
!(mDiagnosticTypes & DiagnosticTypes::BIGIMAGE_BORDERS)) {
|
|
return false;
|
|
}
|
|
if (mDiagnosticTypes == DiagnosticTypes::NO_DIAGNOSTIC) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void
|
|
Compositor::DrawDiagnostics(DiagnosticFlags aFlags,
|
|
const nsIntRegion& aVisibleRegion,
|
|
const gfx::IntRect& aClipRect,
|
|
const gfx::Matrix4x4& aTransform,
|
|
uint32_t aFlashCounter)
|
|
{
|
|
if (!ShouldDrawDiagnostics(aFlags)) {
|
|
return;
|
|
}
|
|
|
|
if (aVisibleRegion.GetNumRects() > 1) {
|
|
for (auto iter = aVisibleRegion.RectIter(); !iter.Done(); iter.Next()) {
|
|
DrawDiagnostics(aFlags | DiagnosticFlags::REGION_RECT,
|
|
IntRectToRect(iter.Get()), aClipRect, aTransform,
|
|
aFlashCounter);
|
|
}
|
|
}
|
|
|
|
DrawDiagnostics(aFlags, IntRectToRect(aVisibleRegion.GetBounds()),
|
|
aClipRect, aTransform, aFlashCounter);
|
|
}
|
|
|
|
void
|
|
Compositor::DrawDiagnostics(DiagnosticFlags aFlags,
|
|
const gfx::Rect& aVisibleRect,
|
|
const gfx::IntRect& aClipRect,
|
|
const gfx::Matrix4x4& aTransform,
|
|
uint32_t aFlashCounter)
|
|
{
|
|
if (!ShouldDrawDiagnostics(aFlags)) {
|
|
return;
|
|
}
|
|
|
|
DrawDiagnosticsInternal(aFlags, aVisibleRect, aClipRect, aTransform,
|
|
aFlashCounter);
|
|
}
|
|
|
|
void
|
|
Compositor::DrawDiagnosticsInternal(DiagnosticFlags aFlags,
|
|
const gfx::Rect& aVisibleRect,
|
|
const gfx::IntRect& aClipRect,
|
|
const gfx::Matrix4x4& aTransform,
|
|
uint32_t aFlashCounter)
|
|
{
|
|
#if defined(ANDROID)
|
|
int lWidth = 10;
|
|
#else
|
|
int lWidth = 2;
|
|
#endif
|
|
|
|
gfx::Color color;
|
|
if (aFlags & DiagnosticFlags::CONTENT) {
|
|
color = gfx::Color(0.0f, 1.0f, 0.0f, 1.0f); // green
|
|
if (aFlags & DiagnosticFlags::COMPONENT_ALPHA) {
|
|
color = gfx::Color(0.0f, 1.0f, 1.0f, 1.0f); // greenish blue
|
|
}
|
|
} else if (aFlags & DiagnosticFlags::IMAGE) {
|
|
if (aFlags & DiagnosticFlags::NV12) {
|
|
color = gfx::Color(1.0f, 1.0f, 0.0f, 1.0f); // yellow
|
|
} else if (aFlags & DiagnosticFlags::YCBCR) {
|
|
color = gfx::Color(1.0f, 0.55f, 0.0f, 1.0f); // orange
|
|
} else {
|
|
color = gfx::Color(1.0f, 0.0f, 0.0f, 1.0f); // red
|
|
}
|
|
} else if (aFlags & DiagnosticFlags::COLOR) {
|
|
color = gfx::Color(0.0f, 0.0f, 1.0f, 1.0f); // blue
|
|
} else if (aFlags & DiagnosticFlags::CONTAINER) {
|
|
color = gfx::Color(0.8f, 0.0f, 0.8f, 1.0f); // purple
|
|
}
|
|
|
|
// make tile borders a bit more transparent to keep layer borders readable.
|
|
if (aFlags & DiagnosticFlags::TILE ||
|
|
aFlags & DiagnosticFlags::BIGIMAGE ||
|
|
aFlags & DiagnosticFlags::REGION_RECT) {
|
|
lWidth = 1;
|
|
color.r *= 0.7f;
|
|
color.g *= 0.7f;
|
|
color.b *= 0.7f;
|
|
color.a = color.a * 0.5f;
|
|
} else {
|
|
color.a = color.a * 0.7f;
|
|
}
|
|
|
|
|
|
if (mDiagnosticTypes & DiagnosticTypes::FLASH_BORDERS) {
|
|
float flash = (float)aFlashCounter / (float)DIAGNOSTIC_FLASH_COUNTER_MAX;
|
|
color.r *= flash;
|
|
color.g *= flash;
|
|
color.b *= flash;
|
|
}
|
|
|
|
SlowDrawRect(aVisibleRect, color, aClipRect, aTransform, lWidth);
|
|
}
|
|
|
|
static void
|
|
UpdateTextureCoordinates(gfx::TexturedTriangle& aTriangle,
|
|
const gfx::Rect& aRect,
|
|
const gfx::Rect& aIntersection,
|
|
gfx::Rect aTextureCoords)
|
|
{
|
|
// Calculate the relative offset of the intersection within the layer.
|
|
float dx = (aIntersection.x - aRect.x) / aRect.width;
|
|
float dy = (aIntersection.y - aRect.y) / aRect.height;
|
|
|
|
// Update the texture offset.
|
|
float x = aTextureCoords.x + dx * aTextureCoords.width;
|
|
float y = aTextureCoords.y + dy * aTextureCoords.height;
|
|
|
|
// Scale the texture width and height.
|
|
float w = aTextureCoords.width * aIntersection.width / aRect.width;
|
|
float h = aTextureCoords.height * aIntersection.height / aRect.height;
|
|
|
|
static const auto ValidateAndClamp = [](float& f) {
|
|
// Allow some numerical inaccuracy.
|
|
MOZ_ASSERT(f >= -0.0001f && f <= 1.0001f);
|
|
|
|
if (f >= 1.0f) f = 1.0f;
|
|
if (f <= 0.0f) f = 0.0f;
|
|
};
|
|
|
|
auto UpdatePoint = [&](const gfx::Point& p, gfx::Point& t)
|
|
{
|
|
t.x = x + (p.x - aIntersection.x) / aIntersection.width * w;
|
|
t.y = y + (p.y - aIntersection.y) / aIntersection.height * h;
|
|
|
|
ValidateAndClamp(t.x);
|
|
ValidateAndClamp(t.y);
|
|
};
|
|
|
|
UpdatePoint(aTriangle.p1, aTriangle.textureCoords.p1);
|
|
UpdatePoint(aTriangle.p2, aTriangle.textureCoords.p2);
|
|
UpdatePoint(aTriangle.p3, aTriangle.textureCoords.p3);
|
|
}
|
|
|
|
void
|
|
Compositor::DrawGeometry(const gfx::Rect& aRect,
|
|
const gfx::IntRect& aClipRect,
|
|
const EffectChain& aEffectChain,
|
|
gfx::Float aOpacity,
|
|
const gfx::Matrix4x4& aTransform,
|
|
const gfx::Rect& aVisibleRect,
|
|
const Maybe<gfx::Polygon3D>& aGeometry)
|
|
{
|
|
if (!aGeometry) {
|
|
DrawQuad(aRect, aClipRect, aEffectChain,
|
|
aOpacity, aTransform, aVisibleRect);
|
|
return;
|
|
}
|
|
|
|
// Cull invisible polygons.
|
|
if (aRect.Intersect(aGeometry->BoundingBox()).IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
gfx::Polygon3D clipped = aGeometry->ClipPolygon(aRect);
|
|
nsTArray<gfx::Triangle> triangles = clipped.ToTriangles();
|
|
|
|
for (gfx::Triangle& geometry : triangles) {
|
|
const gfx::Rect intersection = aRect.Intersect(geometry.BoundingBox());
|
|
|
|
// Cull invisible triangles.
|
|
if (intersection.IsEmpty()) {
|
|
continue;
|
|
}
|
|
|
|
MOZ_ASSERT(aRect.width > 0.0f && aRect.height > 0.0f);
|
|
MOZ_ASSERT(intersection.width > 0.0f && intersection.height > 0.0f);
|
|
|
|
gfx::TexturedTriangle triangle(Move(geometry));
|
|
triangle.width = aRect.width;
|
|
triangle.height = aRect.height;
|
|
|
|
// Since the texture was created for non-split geometry, we need to
|
|
// update the texture coordinates to account for the split.
|
|
if (aEffectChain.mPrimaryEffect->mType == EffectTypes::RGB) {
|
|
TexturedEffect* texturedEffect =
|
|
static_cast<TexturedEffect*>(aEffectChain.mPrimaryEffect.get());
|
|
|
|
UpdateTextureCoordinates(triangle, aRect, intersection,
|
|
texturedEffect->mTextureCoords);
|
|
}
|
|
|
|
DrawTriangle(triangle, aClipRect, aEffectChain,
|
|
aOpacity, aTransform, aVisibleRect);
|
|
}
|
|
}
|
|
|
|
void
|
|
Compositor::SlowDrawRect(const gfx::Rect& aRect, const gfx::Color& aColor,
|
|
const gfx::IntRect& aClipRect,
|
|
const gfx::Matrix4x4& aTransform, int aStrokeWidth)
|
|
{
|
|
// TODO This should draw a rect using a single draw call but since
|
|
// this is only used for debugging overlays it's not worth optimizing ATM.
|
|
float opacity = 1.0f;
|
|
EffectChain effects;
|
|
|
|
effects.mPrimaryEffect = new EffectSolidColor(aColor);
|
|
// left
|
|
this->DrawQuad(gfx::Rect(aRect.x, aRect.y,
|
|
aStrokeWidth, aRect.height),
|
|
aClipRect, effects, opacity,
|
|
aTransform);
|
|
// top
|
|
this->DrawQuad(gfx::Rect(aRect.x + aStrokeWidth, aRect.y,
|
|
aRect.width - 2 * aStrokeWidth, aStrokeWidth),
|
|
aClipRect, effects, opacity,
|
|
aTransform);
|
|
// right
|
|
this->DrawQuad(gfx::Rect(aRect.x + aRect.width - aStrokeWidth, aRect.y,
|
|
aStrokeWidth, aRect.height),
|
|
aClipRect, effects, opacity,
|
|
aTransform);
|
|
// bottom
|
|
this->DrawQuad(gfx::Rect(aRect.x + aStrokeWidth, aRect.y + aRect.height - aStrokeWidth,
|
|
aRect.width - 2 * aStrokeWidth, aStrokeWidth),
|
|
aClipRect, effects, opacity,
|
|
aTransform);
|
|
}
|
|
|
|
void
|
|
Compositor::FillRect(const gfx::Rect& aRect, const gfx::Color& aColor,
|
|
const gfx::IntRect& aClipRect,
|
|
const gfx::Matrix4x4& aTransform)
|
|
{
|
|
float opacity = 1.0f;
|
|
EffectChain effects;
|
|
|
|
effects.mPrimaryEffect = new EffectSolidColor(aColor);
|
|
this->DrawQuad(aRect,
|
|
aClipRect, effects, opacity,
|
|
aTransform);
|
|
}
|
|
|
|
|
|
static float
|
|
WrapTexCoord(float v)
|
|
{
|
|
// This should return values in range [0, 1.0)
|
|
return v - floorf(v);
|
|
}
|
|
|
|
static void
|
|
SetRects(size_t n,
|
|
decomposedRectArrayT* aLayerRects,
|
|
decomposedRectArrayT* aTextureRects,
|
|
float x0, float y0, float x1, float y1,
|
|
float tx0, float ty0, float tx1, float ty1,
|
|
bool flip_y)
|
|
{
|
|
if (flip_y) {
|
|
std::swap(ty0, ty1);
|
|
}
|
|
(*aLayerRects)[n] = gfx::Rect(x0, y0, x1 - x0, y1 - y0);
|
|
(*aTextureRects)[n] = gfx::Rect(tx0, ty0, tx1 - tx0, ty1 - ty0);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
static inline bool
|
|
FuzzyEqual(float a, float b)
|
|
{
|
|
return fabs(a - b) < 0.0001f;
|
|
}
|
|
static inline bool
|
|
FuzzyLTE(float a, float b)
|
|
{
|
|
return a <= b + 0.0001f;
|
|
}
|
|
#endif
|
|
|
|
size_t
|
|
DecomposeIntoNoRepeatRects(const gfx::Rect& aRect,
|
|
const gfx::Rect& aTexCoordRect,
|
|
decomposedRectArrayT* aLayerRects,
|
|
decomposedRectArrayT* aTextureRects)
|
|
{
|
|
gfx::Rect texCoordRect = aTexCoordRect;
|
|
|
|
// If the texture should be flipped, it will have negative height. Detect that
|
|
// here and compensate for it. We will flip each rect as we emit it.
|
|
bool flipped = false;
|
|
if (texCoordRect.height < 0) {
|
|
flipped = true;
|
|
texCoordRect.y += texCoordRect.height;
|
|
texCoordRect.height = -texCoordRect.height;
|
|
}
|
|
|
|
// Wrap the texture coordinates so they are within [0,1] and cap width/height
|
|
// at 1. We rely on this below.
|
|
texCoordRect = gfx::Rect(gfx::Point(WrapTexCoord(texCoordRect.x),
|
|
WrapTexCoord(texCoordRect.y)),
|
|
gfx::Size(std::min(texCoordRect.width, 1.0f),
|
|
std::min(texCoordRect.height, 1.0f)));
|
|
|
|
NS_ASSERTION(texCoordRect.x >= 0.0f && texCoordRect.x <= 1.0f &&
|
|
texCoordRect.y >= 0.0f && texCoordRect.y <= 1.0f &&
|
|
texCoordRect.width >= 0.0f && texCoordRect.width <= 1.0f &&
|
|
texCoordRect.height >= 0.0f && texCoordRect.height <= 1.0f &&
|
|
texCoordRect.XMost() >= 0.0f && texCoordRect.XMost() <= 2.0f &&
|
|
texCoordRect.YMost() >= 0.0f && texCoordRect.YMost() <= 2.0f,
|
|
"We just wrapped the texture coordinates, didn't we?");
|
|
|
|
// Get the top left and bottom right points of the rectangle. Note that
|
|
// tl.x/tl.y are within [0,1] but br.x/br.y are within [0,2].
|
|
gfx::Point tl = texCoordRect.TopLeft();
|
|
gfx::Point br = texCoordRect.BottomRight();
|
|
|
|
NS_ASSERTION(tl.x >= 0.0f && tl.x <= 1.0f &&
|
|
tl.y >= 0.0f && tl.y <= 1.0f &&
|
|
br.x >= tl.x && br.x <= 2.0f &&
|
|
br.y >= tl.y && br.y <= 2.0f &&
|
|
FuzzyLTE(br.x - tl.x, 1.0f) &&
|
|
FuzzyLTE(br.y - tl.y, 1.0f),
|
|
"Somehow generated invalid texture coordinates");
|
|
|
|
// Then check if we wrap in either the x or y axis.
|
|
bool xwrap = br.x > 1.0f;
|
|
bool ywrap = br.y > 1.0f;
|
|
|
|
// If xwrap is false, the texture will be sampled from tl.x .. br.x.
|
|
// If xwrap is true, then it will be split into tl.x .. 1.0, and
|
|
// 0.0 .. WrapTexCoord(br.x). Same for the Y axis. The destination
|
|
// rectangle is also split appropriately, according to the calculated
|
|
// xmid/ymid values.
|
|
if (!xwrap && !ywrap) {
|
|
SetRects(0, aLayerRects, aTextureRects,
|
|
aRect.x, aRect.y, aRect.XMost(), aRect.YMost(),
|
|
tl.x, tl.y, br.x, br.y,
|
|
flipped);
|
|
return 1;
|
|
}
|
|
|
|
// If we are dealing with wrapping br.x and br.y are greater than 1.0 so
|
|
// wrap them here as well.
|
|
br = gfx::Point(xwrap ? WrapTexCoord(br.x) : br.x,
|
|
ywrap ? WrapTexCoord(br.y) : br.y);
|
|
|
|
// If we wrap around along the x axis, we will draw first from
|
|
// tl.x .. 1.0 and then from 0.0 .. br.x (which we just wrapped above).
|
|
// The same applies for the Y axis. The midpoints we calculate here are
|
|
// only valid if we actually wrap around.
|
|
GLfloat xmid = aRect.x + (1.0f - tl.x) / texCoordRect.width * aRect.width;
|
|
GLfloat ymid = aRect.y + (1.0f - tl.y) / texCoordRect.height * aRect.height;
|
|
|
|
// Due to floating-point inaccuracy, we have to use XMost()-x and YMost()-y
|
|
// to calculate width and height, respectively, to ensure that size will
|
|
// remain consistent going from absolute to relative and back again.
|
|
NS_ASSERTION(!xwrap ||
|
|
(xmid >= aRect.x &&
|
|
xmid <= aRect.XMost() &&
|
|
FuzzyEqual((xmid - aRect.x) + (aRect.XMost() - xmid), aRect.XMost() - aRect.x)),
|
|
"xmid should be within [x,XMost()] and the wrapped rect should have the same width");
|
|
NS_ASSERTION(!ywrap ||
|
|
(ymid >= aRect.y &&
|
|
ymid <= aRect.YMost() &&
|
|
FuzzyEqual((ymid - aRect.y) + (aRect.YMost() - ymid), aRect.YMost() - aRect.y)),
|
|
"ymid should be within [y,YMost()] and the wrapped rect should have the same height");
|
|
|
|
if (!xwrap && ywrap) {
|
|
SetRects(0, aLayerRects, aTextureRects,
|
|
aRect.x, aRect.y, aRect.XMost(), ymid,
|
|
tl.x, tl.y, br.x, 1.0f,
|
|
flipped);
|
|
SetRects(1, aLayerRects, aTextureRects,
|
|
aRect.x, ymid, aRect.XMost(), aRect.YMost(),
|
|
tl.x, 0.0f, br.x, br.y,
|
|
flipped);
|
|
return 2;
|
|
}
|
|
|
|
if (xwrap && !ywrap) {
|
|
SetRects(0, aLayerRects, aTextureRects,
|
|
aRect.x, aRect.y, xmid, aRect.YMost(),
|
|
tl.x, tl.y, 1.0f, br.y,
|
|
flipped);
|
|
SetRects(1, aLayerRects, aTextureRects,
|
|
xmid, aRect.y, aRect.XMost(), aRect.YMost(),
|
|
0.0f, tl.y, br.x, br.y,
|
|
flipped);
|
|
return 2;
|
|
}
|
|
|
|
SetRects(0, aLayerRects, aTextureRects,
|
|
aRect.x, aRect.y, xmid, ymid,
|
|
tl.x, tl.y, 1.0f, 1.0f,
|
|
flipped);
|
|
SetRects(1, aLayerRects, aTextureRects,
|
|
xmid, aRect.y, aRect.XMost(), ymid,
|
|
0.0f, tl.y, br.x, 1.0f,
|
|
flipped);
|
|
SetRects(2, aLayerRects, aTextureRects,
|
|
aRect.x, ymid, xmid, aRect.YMost(),
|
|
tl.x, 0.0f, 1.0f, br.y,
|
|
flipped);
|
|
SetRects(3, aLayerRects, aTextureRects,
|
|
xmid, ymid, aRect.XMost(), aRect.YMost(),
|
|
0.0f, 0.0f, br.x, br.y,
|
|
flipped);
|
|
return 4;
|
|
}
|
|
|
|
gfx::IntRect
|
|
Compositor::ComputeBackdropCopyRect(const gfx::Rect& aRect,
|
|
const gfx::IntRect& aClipRect,
|
|
const gfx::Matrix4x4& aTransform,
|
|
gfx::Matrix4x4* aOutTransform,
|
|
gfx::Rect* aOutLayerQuad)
|
|
{
|
|
// Compute the clip.
|
|
gfx::IntPoint rtOffset = GetCurrentRenderTarget()->GetOrigin();
|
|
gfx::IntSize rtSize = GetCurrentRenderTarget()->GetSize();
|
|
|
|
gfx::IntRect renderBounds(0, 0, rtSize.width, rtSize.height);
|
|
renderBounds.IntersectRect(renderBounds, aClipRect);
|
|
renderBounds.MoveBy(rtOffset);
|
|
|
|
// Apply the layer transform.
|
|
gfx::RectDouble dest = aTransform.TransformAndClipBounds(
|
|
gfx::RectDouble(aRect.x, aRect.y, aRect.width, aRect.height),
|
|
gfx::RectDouble(renderBounds.x, renderBounds.y, renderBounds.width, renderBounds.height));
|
|
dest -= rtOffset;
|
|
|
|
// Ensure we don't round out to -1, which trips up Direct3D.
|
|
dest.IntersectRect(dest, gfx::RectDouble(0, 0, rtSize.width, rtSize.height));
|
|
|
|
if (aOutLayerQuad) {
|
|
*aOutLayerQuad = gfx::Rect(dest.x, dest.y, dest.width, dest.height);
|
|
}
|
|
|
|
// Round out to integer.
|
|
gfx::IntRect result;
|
|
dest.RoundOut();
|
|
dest.ToIntRect(&result);
|
|
|
|
// Create a transform from adjusted clip space to render target space,
|
|
// translate it for the backdrop rect, then transform it into the backdrop's
|
|
// uv-space.
|
|
gfx::Matrix4x4 transform;
|
|
transform.PostScale(rtSize.width, rtSize.height, 1.0);
|
|
transform.PostTranslate(-result.x, -result.y, 0.0);
|
|
transform.PostScale(1 / float(result.width), 1 / float(result.height), 1.0);
|
|
*aOutTransform = transform;
|
|
return result;
|
|
}
|
|
|
|
gfx::IntRect
|
|
Compositor::ComputeBackdropCopyRect(const gfx::Triangle& aTriangle,
|
|
const gfx::IntRect& aClipRect,
|
|
const gfx::Matrix4x4& aTransform,
|
|
gfx::Matrix4x4* aOutTransform,
|
|
gfx::Rect* aOutLayerQuad)
|
|
{
|
|
gfx::Rect boundingBox = aTriangle.BoundingBox();
|
|
return ComputeBackdropCopyRect(boundingBox, aClipRect, aTransform,
|
|
aOutTransform, aOutLayerQuad);
|
|
}
|
|
|
|
void
|
|
Compositor::SetInvalid()
|
|
{
|
|
mParent = nullptr;
|
|
}
|
|
|
|
bool
|
|
Compositor::IsValid() const
|
|
{
|
|
return !!mParent;
|
|
}
|
|
|
|
void
|
|
Compositor::SetDispAcquireFence(Layer* aLayer)
|
|
{
|
|
}
|
|
|
|
} // namespace layers
|
|
} // namespace mozilla
|