forked from mirrors/gecko-dev
a71d0035ad
This commit adds a buffer unrotate operation to DrawTarget. It's initially implemented with LockBits in DrawTarget. DrawTargetDual overrides the implementation to pass on the operation to it's DrawTargets. No override is given for DrawTargetCapture as we intentionally avoid this code path when async painting as it can fail. This is needed so that RotatedBuffer can expose a single DrawTarget, which can be a DrawTarget (for normal alpha), DrawTargetDual (for component alpha), or DrawTargetCapture (when async painting). MozReview-Commit-ID: csjjZ733hl --HG-- rename : gfx/layers/BufferUnrotate.cpp => gfx/2d/BufferUnrotate.cpp rename : gfx/layers/BufferUnrotate.h => gfx/2d/BufferUnrotate.h extra : rebase_source : 5d96e2a5d36a01f2f9992adb37830e56436c7c35 extra : source : 64cb50b227e0ae604653f03ce2e892493126392e
323 lines
9.7 KiB
C++
323 lines
9.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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 "2D.h"
|
|
#include "Logging.h"
|
|
#include "PathHelpers.h"
|
|
#include "Tools.h"
|
|
|
|
#include "DrawTargetCapture.h"
|
|
|
|
#include "BufferEdgePad.h"
|
|
#include "BufferUnrotate.h"
|
|
|
|
#ifdef BUILD_ARM_NEON
|
|
#include "mozilla/arm.h"
|
|
#include "LuminanceNEON.h"
|
|
#endif
|
|
|
|
namespace mozilla {
|
|
namespace gfx {
|
|
|
|
/**
|
|
* Byte offsets of channels in a native packed gfxColor or cairo image surface.
|
|
*/
|
|
#ifdef IS_BIG_ENDIAN
|
|
#define GFX_ARGB32_OFFSET_A 0
|
|
#define GFX_ARGB32_OFFSET_R 1
|
|
#define GFX_ARGB32_OFFSET_G 2
|
|
#define GFX_ARGB32_OFFSET_B 3
|
|
#else
|
|
#define GFX_ARGB32_OFFSET_A 3
|
|
#define GFX_ARGB32_OFFSET_R 2
|
|
#define GFX_ARGB32_OFFSET_G 1
|
|
#define GFX_ARGB32_OFFSET_B 0
|
|
#endif
|
|
|
|
// c = n / 255
|
|
// c <= 0.04045 ? c / 12.92 : pow((c + 0.055) / 1.055, 2.4)) * 255 + 0.5
|
|
static const uint8_t gsRGBToLinearRGBMap[256] = {
|
|
0, 0, 0, 0, 0, 0, 0, 1,
|
|
1, 1, 1, 1, 1, 1, 1, 1,
|
|
1, 1, 2, 2, 2, 2, 2, 2,
|
|
2, 2, 3, 3, 3, 3, 3, 3,
|
|
4, 4, 4, 4, 4, 5, 5, 5,
|
|
5, 6, 6, 6, 6, 7, 7, 7,
|
|
8, 8, 8, 8, 9, 9, 9, 10,
|
|
10, 10, 11, 11, 12, 12, 12, 13,
|
|
13, 13, 14, 14, 15, 15, 16, 16,
|
|
17, 17, 17, 18, 18, 19, 19, 20,
|
|
20, 21, 22, 22, 23, 23, 24, 24,
|
|
25, 25, 26, 27, 27, 28, 29, 29,
|
|
30, 30, 31, 32, 32, 33, 34, 35,
|
|
35, 36, 37, 37, 38, 39, 40, 41,
|
|
41, 42, 43, 44, 45, 45, 46, 47,
|
|
48, 49, 50, 51, 51, 52, 53, 54,
|
|
55, 56, 57, 58, 59, 60, 61, 62,
|
|
63, 64, 65, 66, 67, 68, 69, 70,
|
|
71, 72, 73, 74, 76, 77, 78, 79,
|
|
80, 81, 82, 84, 85, 86, 87, 88,
|
|
90, 91, 92, 93, 95, 96, 97, 99,
|
|
100, 101, 103, 104, 105, 107, 108, 109,
|
|
111, 112, 114, 115, 116, 118, 119, 121,
|
|
122, 124, 125, 127, 128, 130, 131, 133,
|
|
134, 136, 138, 139, 141, 142, 144, 146,
|
|
147, 149, 151, 152, 154, 156, 157, 159,
|
|
161, 163, 164, 166, 168, 170, 171, 173,
|
|
175, 177, 179, 181, 183, 184, 186, 188,
|
|
190, 192, 194, 196, 198, 200, 202, 204,
|
|
206, 208, 210, 212, 214, 216, 218, 220,
|
|
222, 224, 226, 229, 231, 233, 235, 237,
|
|
239, 242, 244, 246, 248, 250, 253, 255
|
|
};
|
|
|
|
static void
|
|
ComputesRGBLuminanceMask(const uint8_t *aSourceData,
|
|
int32_t aSourceStride,
|
|
uint8_t *aDestData,
|
|
int32_t aDestStride,
|
|
const IntSize &aSize,
|
|
float aOpacity)
|
|
{
|
|
#ifdef BUILD_ARM_NEON
|
|
if (mozilla::supports_neon()) {
|
|
ComputesRGBLuminanceMask_NEON(aSourceData, aSourceStride,
|
|
aDestData, aDestStride,
|
|
aSize, aOpacity);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
int32_t redFactor = 55 * aOpacity; // 255 * 0.2125 * opacity
|
|
int32_t greenFactor = 183 * aOpacity; // 255 * 0.7154 * opacity
|
|
int32_t blueFactor = 18 * aOpacity; // 255 * 0.0721
|
|
int32_t sourceOffset = aSourceStride - 4 * aSize.width;
|
|
const uint8_t *sourcePixel = aSourceData;
|
|
int32_t destOffset = aDestStride - aSize.width;
|
|
uint8_t *destPixel = aDestData;
|
|
|
|
for (int32_t y = 0; y < aSize.height; y++) {
|
|
for (int32_t x = 0; x < aSize.width; x++) {
|
|
uint8_t a = sourcePixel[GFX_ARGB32_OFFSET_A];
|
|
|
|
if (a) {
|
|
*destPixel = (redFactor * sourcePixel[GFX_ARGB32_OFFSET_R] +
|
|
greenFactor * sourcePixel[GFX_ARGB32_OFFSET_G] +
|
|
blueFactor * sourcePixel[GFX_ARGB32_OFFSET_B]) >> 8;
|
|
} else {
|
|
*destPixel = 0;
|
|
}
|
|
sourcePixel += 4;
|
|
destPixel++;
|
|
}
|
|
sourcePixel += sourceOffset;
|
|
destPixel += destOffset;
|
|
}
|
|
}
|
|
|
|
static void
|
|
ComputeLinearRGBLuminanceMask(const uint8_t *aSourceData,
|
|
int32_t aSourceStride,
|
|
uint8_t *aDestData,
|
|
int32_t aDestStride,
|
|
const IntSize &aSize,
|
|
float aOpacity)
|
|
{
|
|
int32_t redFactor = 55 * aOpacity; // 255 * 0.2125 * opacity
|
|
int32_t greenFactor = 183 * aOpacity; // 255 * 0.7154 * opacity
|
|
int32_t blueFactor = 18 * aOpacity; // 255 * 0.0721
|
|
int32_t sourceOffset = aSourceStride - 4 * aSize.width;
|
|
const uint8_t *sourcePixel = aSourceData;
|
|
int32_t destOffset = aDestStride - aSize.width;
|
|
uint8_t *destPixel = aDestData;
|
|
|
|
for (int32_t y = 0; y < aSize.height; y++) {
|
|
for (int32_t x = 0; x < aSize.width; x++) {
|
|
uint8_t a = sourcePixel[GFX_ARGB32_OFFSET_A];
|
|
|
|
// unpremultiply
|
|
if (a) {
|
|
if (a == 255) {
|
|
/* sRGB -> linearRGB -> intensity */
|
|
*destPixel =
|
|
static_cast<uint8_t>
|
|
((gsRGBToLinearRGBMap[sourcePixel[GFX_ARGB32_OFFSET_R]] *
|
|
redFactor +
|
|
gsRGBToLinearRGBMap[sourcePixel[GFX_ARGB32_OFFSET_G]] *
|
|
greenFactor +
|
|
gsRGBToLinearRGBMap[sourcePixel[GFX_ARGB32_OFFSET_B]] *
|
|
blueFactor) >> 8);
|
|
} else {
|
|
uint8_t tempPixel[4];
|
|
tempPixel[GFX_ARGB32_OFFSET_B] =
|
|
(255 * sourcePixel[GFX_ARGB32_OFFSET_B]) / a;
|
|
tempPixel[GFX_ARGB32_OFFSET_G] =
|
|
(255 * sourcePixel[GFX_ARGB32_OFFSET_G]) / a;
|
|
tempPixel[GFX_ARGB32_OFFSET_R] =
|
|
(255 * sourcePixel[GFX_ARGB32_OFFSET_R]) / a;
|
|
|
|
/* sRGB -> linearRGB -> intensity */
|
|
*destPixel =
|
|
static_cast<uint8_t>
|
|
(((gsRGBToLinearRGBMap[tempPixel[GFX_ARGB32_OFFSET_R]] *
|
|
redFactor +
|
|
gsRGBToLinearRGBMap[tempPixel[GFX_ARGB32_OFFSET_G]] *
|
|
greenFactor +
|
|
gsRGBToLinearRGBMap[tempPixel[GFX_ARGB32_OFFSET_B]] *
|
|
blueFactor) >> 8) * (a / 255.0f));
|
|
}
|
|
} else {
|
|
*destPixel = 0;
|
|
}
|
|
sourcePixel += 4;
|
|
destPixel++;
|
|
}
|
|
sourcePixel += sourceOffset;
|
|
destPixel += destOffset;
|
|
}
|
|
}
|
|
|
|
void
|
|
DrawTarget::DrawCapturedDT(DrawTargetCapture *aCaptureDT,
|
|
const Matrix& aTransform)
|
|
{
|
|
if (aTransform.HasNonIntegerTranslation()) {
|
|
gfxWarning() << "Non integer translations are not supported for DrawCaptureDT at this time!";
|
|
return;
|
|
}
|
|
static_cast<DrawTargetCaptureImpl*>(aCaptureDT)->ReplayToDrawTarget(this, aTransform);
|
|
}
|
|
|
|
void
|
|
DrawTarget::PushDeviceSpaceClipRects(const IntRect* aRects, uint32_t aCount)
|
|
{
|
|
Matrix oldTransform = GetTransform();
|
|
SetTransform(Matrix());
|
|
|
|
RefPtr<PathBuilder> pathBuilder = CreatePathBuilder();
|
|
for (uint32_t i = 0; i < aCount; i++) {
|
|
AppendRectToPath(pathBuilder, Rect(aRects[i]));
|
|
}
|
|
RefPtr<Path> path = pathBuilder->Finish();
|
|
PushClip(path);
|
|
|
|
SetTransform(oldTransform);
|
|
}
|
|
|
|
void
|
|
DrawTarget::StrokeGlyphs(ScaledFont* aFont,
|
|
const GlyphBuffer& aBuffer,
|
|
const Pattern& aPattern,
|
|
const StrokeOptions& aStrokeOptions,
|
|
const DrawOptions& aOptions)
|
|
{
|
|
RefPtr<Path> path = aFont->GetPathForGlyphs(aBuffer, this);
|
|
Stroke(path, aPattern, aStrokeOptions, aOptions);
|
|
}
|
|
|
|
already_AddRefed<SourceSurface>
|
|
DrawTarget::IntoLuminanceSource(LuminanceType aMaskType, float aOpacity)
|
|
{
|
|
RefPtr<SourceSurface> surface = Snapshot();
|
|
if (!surface) {
|
|
return nullptr;
|
|
}
|
|
|
|
IntSize size = surface->GetSize();
|
|
|
|
RefPtr<DataSourceSurface> maskSurface = surface->GetDataSurface();
|
|
if (!maskSurface) {
|
|
return nullptr;
|
|
}
|
|
|
|
DataSourceSurface::MappedSurface map;
|
|
if (!maskSurface->Map(DataSourceSurface::MapType::READ, &map)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Create alpha channel mask for output
|
|
RefPtr<DataSourceSurface> destMaskSurface =
|
|
Factory::CreateDataSourceSurface(size, SurfaceFormat::A8);
|
|
if (!destMaskSurface) {
|
|
return nullptr;
|
|
}
|
|
DataSourceSurface::MappedSurface destMap;
|
|
if (!destMaskSurface->Map(DataSourceSurface::MapType::WRITE, &destMap)) {
|
|
return nullptr;
|
|
}
|
|
|
|
switch (aMaskType) {
|
|
case LuminanceType::LUMINANCE:
|
|
{
|
|
ComputesRGBLuminanceMask(map.mData, map.mStride,
|
|
destMap.mData, destMap.mStride,
|
|
size, aOpacity);
|
|
break;
|
|
}
|
|
case LuminanceType::LINEARRGB:
|
|
{
|
|
ComputeLinearRGBLuminanceMask(map.mData, map.mStride,
|
|
destMap.mData, destMap.mStride,
|
|
size, aOpacity);
|
|
break;
|
|
}
|
|
}
|
|
|
|
maskSurface->Unmap();
|
|
destMaskSurface->Unmap();
|
|
|
|
return destMaskSurface.forget();
|
|
}
|
|
|
|
void
|
|
DrawTarget::Blur(const AlphaBoxBlur& aBlur)
|
|
{
|
|
uint8_t* data;
|
|
IntSize size;
|
|
int32_t stride;
|
|
SurfaceFormat format;
|
|
if (!LockBits(&data, &size, &stride, &format)) {
|
|
gfxWarning() << "Cannot perform in-place blur on non-data DrawTarget";
|
|
return;
|
|
}
|
|
|
|
// Sanity check that the blur size matches the draw target.
|
|
MOZ_ASSERT(size == aBlur.GetSize());
|
|
MOZ_ASSERT(stride == aBlur.GetStride());
|
|
aBlur.Blur(data);
|
|
|
|
ReleaseBits(data);
|
|
}
|
|
|
|
void
|
|
DrawTarget::PadEdges(const IntRegion& aRegion)
|
|
{
|
|
PadDrawTargetOutFromRegion(this, aRegion);
|
|
}
|
|
|
|
bool
|
|
DrawTarget::Unrotate(IntPoint aRotation)
|
|
{
|
|
unsigned char* data;
|
|
IntSize size;
|
|
int32_t stride;
|
|
SurfaceFormat format;
|
|
|
|
if (LockBits(&data, &size, &stride, &format)) {
|
|
uint8_t bytesPerPixel = BytesPerPixel(format);
|
|
BufferUnrotate(data,
|
|
size.width * bytesPerPixel,
|
|
size.height, stride,
|
|
aRotation.x * bytesPerPixel,
|
|
aRotation.y);
|
|
ReleaseBits(data);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
} // namespace gfx
|
|
} // namespace mozilla
|