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thorvg/src/renderer/sw_engine/tvgSwRenderer.cpp
Hermet Park 4768331b3b sw_engine: support hue, color, saturation, luminosity, hardmix blends 
- Hue: Creates a result color with the luminance and saturation
  of the base color and the hue of the blend color.

- Color: Creates a result color with the luminance of the base color
  and the hue and saturation of the blend color. This preserves the gray
  levels in the image and is useful for coloring monochrome images and
  for tinting color images.

- Luminosity: reates a result color with the hue and saturation of the base color
  and the luminance of the blend color. This mode creates the inverse effect of
  Color mode.

- Saturation: Creates a result color with the luminance and hue of
  the base color and the saturation of the blend color. Painting with this mode
  in an area with no (0) saturation (gray) causes no change.

- HardMix: Adds the bottom & top. If the resulting sum for a channel is 255 or
  greater, it receives a value of 255; if less than 255, a value of 0.

issue: https://github.com/thorvg/thorvg/issues/2701
2025-07-23 00:37:19 +09:00

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/*
* Copyright (c) 2020 - 2025 the ThorVG project. All rights reserved.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifdef THORVG_SW_OPENMP_SUPPORT
#include <omp.h>
#endif
#include <algorithm>
#include <atomic>
#include "tvgSwCommon.h"
#include "tvgTaskScheduler.h"
#include "tvgSwRenderer.h"
/************************************************************************/
/* Internal Class Implementation */
/************************************************************************/
static atomic<int32_t> rendererCnt{-1};
static SwMpool* globalMpool = nullptr;
static uint32_t threadsCnt = 0;
struct SwTask : Task
{
SwSurface* surface = nullptr;
SwMpool* mpool = nullptr;
RenderRegion curBox = {}; //current rendering region
RenderRegion prvBox = {}; //previous rendering region
Matrix transform;
Array<RenderData> clips;
RenderDirtyRegion* dirtyRegion;
RenderUpdateFlag flags = RenderUpdateFlag::None;
uint8_t opacity;
bool pushed : 1; //Pushed into task list?
bool disposed : 1; //Disposed task?
bool nodirty : 1; //target for partial rendering?
SwTask() : pushed(false), disposed(false) {}
const RenderRegion& bounds()
{
done();
return curBox;
}
void invisible()
{
curBox.reset();
if (!nodirty) dirtyRegion->add(prvBox, curBox);
}
virtual void dispose() = 0;
virtual bool clip(SwRle* target) = 0;
virtual ~SwTask() {}
};
struct SwShapeTask : SwTask
{
SwShape shape;
const RenderShape* rshape = nullptr;
bool clipper = false;
/* We assume that if the stroke width is greater than 2,
the shape's outline beneath the stroke could be adequately covered by the stroke drawing.
Therefore, antialiasing is disabled under this condition.
Additionally, the stroke style should not be dashed. */
bool antialiasing(float strokeWidth)
{
return strokeWidth < 2.0f || rshape->stroke->dash.count > 0 || rshape->stroke->first || rshape->trimpath() || rshape->stroke->color.a < 255;
}
float validStrokeWidth(bool clipper)
{
if (!rshape->stroke) return 0.0f;
auto width = rshape->stroke->width;
if (tvg::zero(width)) return 0.0f;
if (!clipper && (!rshape->stroke->fill && (MULTIPLY(rshape->stroke->color.a, opacity) == 0))) return 0.0f;
if (tvg::zero(rshape->stroke->trim.begin - rshape->stroke->trim.end)) return 0.0f;
return (width * sqrt(transform.e11 * transform.e11 + transform.e12 * transform.e12));
}
bool clip(SwRle* target) override
{
if (shape.strokeRle) return rleClip(target, shape.strokeRle);
if (shape.fastTrack) return rleClip(target, &curBox);
if (shape.rle) return rleClip(target, shape.rle);
return false;
}
void run(unsigned tid) override
{
//invisible
if (opacity == 0 && !clipper) {
if (flags & RenderUpdateFlag::Color) invisible();
return;
}
auto strokeWidth = validStrokeWidth(clipper);
RenderRegion renderBox{};
auto updateShape = flags & (RenderUpdateFlag::Path | RenderUpdateFlag::Transform | RenderUpdateFlag::Clip);
auto updateFill = false;
//Shape
if (updateShape || flags & (RenderUpdateFlag::Color | RenderUpdateFlag::Gradient)) {
updateFill = (MULTIPLY(rshape->color.a, opacity) || rshape->fill);
if (updateShape) shapeReset(&shape);
if (updateFill || clipper) {
if (shapePrepare(&shape, rshape, transform, curBox, renderBox, mpool, tid, clips.count > 0 ? true : false)) {
if (!shapeGenRle(&shape, rshape, antialiasing(strokeWidth))) goto err;
} else {
updateFill = false;
renderBox.reset();
}
}
}
//Fill
if (updateFill) {
if (auto fill = rshape->fill) {
auto ctable = (flags & RenderUpdateFlag::Gradient) ? true : false;
if (ctable) shapeResetFill(&shape);
if (!shapeGenFillColors(&shape, fill, transform, surface, opacity, ctable)) goto err;
}
}
//Stroke
if (updateShape || flags & RenderUpdateFlag::Stroke) {
if (strokeWidth > 0.0f) {
shapeResetStroke(&shape, rshape, transform);
if (!shapeGenStrokeRle(&shape, rshape, transform, curBox, renderBox, mpool, tid)) goto err;
if (auto fill = rshape->strokeFill()) {
auto ctable = (flags & RenderUpdateFlag::GradientStroke) ? true : false;
if (ctable) shapeResetStrokeFill(&shape);
if (!shapeGenStrokeFillColors(&shape, fill, transform, surface, opacity, ctable)) goto err;
}
} else {
shapeDelStroke(&shape);
}
}
//Clear current task memorypool here if the clippers would use the same memory pool
shapeDelOutline(&shape, mpool, tid);
//Clip Path
ARRAY_FOREACH(p, clips) {
auto clipper = static_cast<SwTask*>(*p);
auto clipShapeRle = shape.rle ? clipper->clip(shape.rle) : true;
auto clipStrokeRle = shape.strokeRle ? clipper->clip(shape.strokeRle) : true;
if (!clipShapeRle && !clipStrokeRle) goto err;
}
curBox = renderBox; //sync
if (!nodirty) dirtyRegion->add(prvBox, curBox);
return;
err:
shapeReset(&shape);
rleReset(shape.strokeRle);
shapeDelOutline(&shape, mpool, tid);
invisible();
}
void dispose() override
{
shapeFree(&shape);
}
};
struct SwImageTask : SwTask
{
SwImage image;
RenderSurface* source; //Image source
bool clip(SwRle* target) override
{
TVGERR("SW_ENGINE", "Image is used as ClipPath?");
return true;
}
void run(unsigned tid) override
{
//invisible
if (opacity == 0) {
if (flags & RenderUpdateFlag::Color) invisible();
return;
}
auto clipBox = curBox;
//Convert colorspace if it's not aligned.
rasterConvertCS(source, surface->cs);
rasterPremultiply(source);
image.data = source->data;
image.w = source->w;
image.h = source->h;
image.stride = source->stride;
image.channelSize = source->channelSize;
//Invisible shape turned to visible by alpha.
if ((flags & (RenderUpdateFlag::Image | RenderUpdateFlag::Transform | RenderUpdateFlag::Color)) && (opacity > 0)) {
imageReset(&image);
if (!image.data || image.w == 0 || image.h == 0) goto end;
if (!imagePrepare(&image, transform, clipBox, curBox, mpool, tid)) goto end;
if (clips.count > 0) {
if (!imageGenRle(&image, curBox, false)) goto end;
if (image.rle) {
//Clear current task memorypool here if the clippers would use the same memory pool
imageDelOutline(&image, mpool, tid);
ARRAY_FOREACH(p, clips) {
auto clipper = static_cast<SwTask*>(*p);
if (!clipper->clip(image.rle)) goto err;
}
if (!nodirty) dirtyRegion->add(prvBox, curBox);
return;
}
}
}
goto end;
err:
curBox.reset();
rleReset(image.rle);
end:
imageDelOutline(&image, mpool, tid);
if (!nodirty) dirtyRegion->add(prvBox, curBox);
}
void dispose() override
{
imageFree(&image);
}
};
/************************************************************************/
/* External Class Implementation */
/************************************************************************/
SwRenderer::SwRenderer()
{
if (TaskScheduler::onthread()) {
TVGLOG("SW_RENDERER", "Running on a non-dominant thread!, Renderer(%p)", this);
mpool = mpoolInit(threadsCnt);
sharedMpool = false;
} else {
mpool = globalMpool;
sharedMpool = true;
}
++rendererCnt;
}
SwRenderer::~SwRenderer()
{
clearCompositors();
delete(surface);
if (!sharedMpool) mpoolTerm(mpool);
--rendererCnt;
}
bool SwRenderer::clear()
{
if (surface) {
fulldraw = true;
return rasterClear(surface, 0, 0, surface->w, surface->h);
}
return false;
}
bool SwRenderer::sync()
{
//clear if the rendering was not triggered.
ARRAY_FOREACH(p, tasks) {
if ((*p)->disposed) delete(*p);
else {
(*p)->done();
(*p)->pushed = false;
}
}
tasks.clear();
return true;
}
bool SwRenderer::target(pixel_t* data, uint32_t stride, uint32_t w, uint32_t h, ColorSpace cs)
{
if (!data || stride == 0 || w == 0 || h == 0 || w > stride) return false;
clearCompositors();
if (!surface) surface = new SwSurface;
surface->data = data;
surface->stride = stride;
surface->w = w;
surface->h = h;
surface->cs = cs;
surface->channelSize = CHANNEL_SIZE(cs);
surface->premultiplied = true;
dirtyRegion.init(w, h);
fulldraw = true; //reset the screen
return rasterCompositor(surface);
}
bool SwRenderer::preUpdate()
{
return surface != nullptr;
}
bool SwRenderer::postUpdate()
{
return true;
}
bool SwRenderer::preRender()
{
if (!surface) return false;
if (fulldraw || dirtyRegion.deactivated()) return true;
ARRAY_FOREACH(p, tasks) (*p)->done();
dirtyRegion.commit();
//clear buffer for partial regions
for (int idx = 0; idx < RenderDirtyRegion::PARTITIONING; ++idx) {
ARRAY_FOREACH(p, dirtyRegion.get(idx)) {
rasterClear(surface, p->x(), p->y(), p->w(), p->h());
}
}
return true;
}
void SwRenderer::clearCompositors()
{
//Free Composite Caches
ARRAY_FOREACH(p, compositors) {
tvg::free((*p)->compositor->image.data);
delete((*p)->compositor);
delete(*p);
}
compositors.reset();
}
bool SwRenderer::postRender()
{
//Unmultiply alpha if needed
if (surface->cs == ColorSpace::ABGR8888S || surface->cs == ColorSpace::ARGB8888S) {
rasterUnpremultiply(surface);
}
dirtyRegion.clear();
fulldraw = false;
return true;
}
void SwRenderer::damage(RenderData rd, const RenderRegion& region)
{
SwTask* task = static_cast<SwTask*>(rd);
if (dirtyRegion.deactivated() || (task && task->opacity == 0)) return;
dirtyRegion.add(region);
}
bool SwRenderer::partial(bool disable)
{
return dirtyRegion.deactivate(disable);
}
bool SwRenderer::renderImage(RenderData data)
{
auto task = static_cast<SwImageTask*>(data);
task->done();
if (task->opacity == 0) return true;
auto raster = [&](SwSurface* surface, const SwImage& image, const Matrix& transform, const RenderRegion& bbox, uint8_t opacity) {
if (bbox.invalid() || bbox.x() >= surface->w || bbox.y() >= surface->h) return true;
//RLE Image
if (image.rle) {
if (image.direct) return rasterDirectRleImage(surface, image, bbox, opacity);
else if (image.scaled) return rasterScaledRleImage(surface, image, transform, bbox, opacity);
else {
//create a intermediate buffer for rle clipping
auto cmp = request(sizeof(pixel_t), false);
cmp->compositor->method = MaskMethod::None;
cmp->compositor->valid = true;
cmp->compositor->image.rle = image.rle;
rasterClear(cmp, bbox.x(), bbox.y(), bbox.w(), bbox.h());
rasterTexmapPolygon(cmp, image, transform, bbox, 255);
return rasterDirectRleImage(surface, cmp->compositor->image, bbox, opacity);
}
//Whole Image
} else {
if (image.direct) return rasterDirectImage(surface, image, bbox, opacity);
else if (image.scaled) return rasterScaledImage(surface, image, transform, bbox, opacity);
else return rasterTexmapPolygon(surface, image, transform, bbox, opacity);
}
};
//full scene or partial rendering
if (fulldraw || task->nodirty || task->pushed || dirtyRegion.deactivated()) {
raster(surface, task->image, task->transform, task->curBox, task->opacity);
} else {
for (int idx = 0; idx < RenderDirtyRegion::PARTITIONING; ++idx) {
if (!dirtyRegion.partition(idx).intersected(task->curBox)) continue;
ARRAY_FOREACH(p, dirtyRegion.get(idx)) {
if (task->curBox.min.x >= p->max.x) break; //dirtyRegion is sorted in x order
if (task->curBox.intersected(*p)) {
auto bbox = RenderRegion::intersect(task->curBox, *p);
raster(surface, task->image, task->transform, bbox, task->opacity);
}
}
}
}
task->prvBox = task->curBox;
return true;
}
bool SwRenderer::renderShape(RenderData data)
{
auto task = static_cast<SwShapeTask*>(data);
if (!task) return false;
task->done();
if (task->opacity == 0) return true;
auto fill = [](SwShapeTask* task, SwSurface* surface, const RenderRegion& bbox) {
if (auto fill = task->rshape->fill) {
rasterGradientShape(surface, &task->shape, bbox, fill, task->opacity);
} else {
RenderColor c;
task->rshape->fillColor(&c.r, &c.g, &c.b, &c.a);
c.a = MULTIPLY(task->opacity, c.a);
if (c.a > 0) rasterShape(surface, &task->shape, bbox, c);
}
};
auto stroke = [](SwShapeTask* task, SwSurface* surface, const RenderRegion& bbox) {
if (auto strokeFill = task->rshape->strokeFill()) {
rasterGradientStroke(surface, &task->shape, bbox, strokeFill, task->opacity);
} else {
RenderColor c;
if (task->rshape->strokeFill(&c.r, &c.g, &c.b, &c.a)) {
c.a = MULTIPLY(task->opacity, c.a);
if (c.a > 0) rasterStroke(surface, &task->shape, bbox, c);
}
}
};
//full scene or partial rendering
if (fulldraw || task->nodirty || task->pushed || dirtyRegion.deactivated()) {
if (task->rshape->strokeFirst()) {
stroke(task, surface, task->curBox);
fill(task, surface, task->shape.bbox);
} else {
fill(task, surface, task->shape.bbox);
stroke(task, surface, task->curBox);
}
} else {
for (int idx = 0; idx < RenderDirtyRegion::PARTITIONING; ++idx) {
if (!dirtyRegion.partition(idx).intersected(task->curBox)) continue;
ARRAY_FOREACH(p, dirtyRegion.get(idx)) {
if (task->curBox.min.x >= p->max.x) break; //dirtyRegion is sorted in x order
if (task->rshape->strokeFirst()) {
if (task->rshape->stroke && task->curBox.intersected(*p)) stroke(task, surface, RenderRegion::intersect(task->curBox, *p));
if (task->shape.bbox.intersected(*p)) fill(task, surface, RenderRegion::intersect(task->shape.bbox, *p));
} else {
if (task->shape.bbox.intersected(*p)) fill(task, surface, RenderRegion::intersect(task->shape.bbox, *p));
if (task->rshape->stroke && task->curBox.intersected(*p)) stroke(task, surface, RenderRegion::intersect(task->curBox, *p));
}
}
}
}
task->prvBox = task->curBox;
return true;
}
bool SwRenderer::blend(BlendMethod method)
{
if (surface->blendMethod == method) return true;
surface->blendMethod = method;
switch (method) {
case BlendMethod::Normal:
case BlendMethod::Composition:
surface->blender = nullptr;
break;
case BlendMethod::Multiply:
surface->blender = opBlendMultiply;
break;
case BlendMethod::Screen:
surface->blender = opBlendScreen;
break;
case BlendMethod::Overlay:
surface->blender = opBlendOverlay;
break;
case BlendMethod::Darken:
surface->blender = opBlendDarken;
break;
case BlendMethod::Lighten:
surface->blender = opBlendLighten;
break;
case BlendMethod::ColorDodge:
surface->blender = opBlendColorDodge;
break;
case BlendMethod::ColorBurn:
surface->blender = opBlendColorBurn;
break;
case BlendMethod::HardLight:
surface->blender = opBlendHardLight;
break;
case BlendMethod::SoftLight:
surface->blender = opBlendSoftLight;
break;
case BlendMethod::Difference:
surface->blender = opBlendDifference;
break;
case BlendMethod::Exclusion:
surface->blender = opBlendExclusion;
break;
case BlendMethod::Hue:
surface->blender = opBlendHue;
break;
case BlendMethod::Saturation:
surface->blender = opBlendSaturation;
break;
case BlendMethod::Color:
surface->blender = opBlendColor;
break;
case BlendMethod::Luminosity:
surface->blender = opBlendLuminosity;
break;
case BlendMethod::Add:
surface->blender = opBlendAdd;
break;
case BlendMethod::HardMix:
surface->blender = opBlendHardMix;
break;
default:
TVGLOG("SW_ENGINE", "Non supported blending option = %d", (int) method);
surface->blender = nullptr;
break;
}
return false;
}
RenderRegion SwRenderer::region(RenderData data)
{
if (data) return static_cast<SwTask*>(data)->bounds();
return {};
}
bool SwRenderer::beginComposite(RenderCompositor* cmp, MaskMethod method, uint8_t opacity)
{
if (!cmp) return false;
auto p = static_cast<SwCompositor*>(cmp);
p->method = method;
p->opacity = opacity;
//Current Context?
if (p->method != MaskMethod::None) {
surface = p->recoverSfc;
surface->compositor = p;
}
return true;
}
const RenderSurface* SwRenderer::mainSurface()
{
return surface;
}
SwSurface* SwRenderer::request(int channelSize, bool square)
{
SwSurface* cmp = nullptr;
uint32_t w, h;
if (square) {
//Same Dimensional Size is demanded for the Post Processing Fast Flipping
w = h = std::max(surface->w, surface->h);
} else {
w = surface->w;
h = surface->h;
}
//Use cached data
ARRAY_FOREACH(p, compositors) {
auto cur = *p;
if (cur->compositor->valid && cur->compositor->image.channelSize == channelSize) {
if (w == cur->w && h == cur->h) {
cmp = *p;
break;
}
}
}
//New Composition
if (!cmp) {
//Inherits attributes from main surface
cmp = new SwSurface(surface);
cmp->compositor = new SwCompositor;
cmp->compositor->image.data = tvg::malloc<pixel_t*>(channelSize * w * h);
cmp->w = cmp->compositor->image.w = w;
cmp->h = cmp->compositor->image.h = h;
cmp->stride = cmp->compositor->image.stride = w;
cmp->compositor->image.direct = true;
cmp->compositor->valid = true;
cmp->channelSize = cmp->compositor->image.channelSize = channelSize;
compositors.push(cmp);
}
//Sync. This may have been modified by post-processing.
cmp->data = cmp->compositor->image.data;
return cmp;
}
RenderCompositor* SwRenderer::target(const RenderRegion& region, ColorSpace cs, CompositionFlag flags)
{
auto bbox = RenderRegion::intersect(region, {{0, 0}, {int32_t(surface->w), int32_t(surface->h)}});
if (bbox.invalid()) return nullptr;
auto cmp = request(CHANNEL_SIZE(cs), (flags & CompositionFlag::PostProcessing));
cmp->compositor->recoverSfc = surface;
cmp->compositor->recoverCmp = surface->compositor;
cmp->compositor->valid = false;
cmp->compositor->bbox = bbox;
/* TODO: Currently, only blending might work.
Blending and composition must be handled together. */
rasterClear(cmp, bbox.x(), bbox.y(), bbox.w(), bbox.h());
//Switch render target
surface = cmp;
return cmp->compositor;
}
bool SwRenderer::endComposite(RenderCompositor* cmp)
{
if (!cmp) return false;
auto p = static_cast<SwCompositor*>(cmp);
//Recover Context
surface = p->recoverSfc;
surface->compositor = p->recoverCmp;
//only invalid (currently used) surface can be composited
if (p->valid) return true;
p->valid = true;
//Default is alpha blending
if (p->method == MaskMethod::None) {
return rasterDirectImage(surface, p->image, p->bbox, p->opacity);
}
return true;
}
void SwRenderer::prepare(RenderEffect* effect, const Matrix& transform)
{
switch (effect->type) {
case SceneEffect::GaussianBlur: effectGaussianBlurUpdate(static_cast<RenderEffectGaussianBlur*>(effect), transform); break;
case SceneEffect::DropShadow: effectDropShadowUpdate(static_cast<RenderEffectDropShadow*>(effect), transform); break;
case SceneEffect::Fill: effectFillUpdate(static_cast<RenderEffectFill*>(effect)); break;
case SceneEffect::Tint: effectTintUpdate(static_cast<RenderEffectTint*>(effect)); break;
case SceneEffect::Tritone: effectTritoneUpdate(static_cast<RenderEffectTritone*>(effect)); break;
default: break;
}
}
bool SwRenderer::region(RenderEffect* effect)
{
switch (effect->type) {
case SceneEffect::GaussianBlur: return effectGaussianBlurRegion(static_cast<RenderEffectGaussianBlur*>(effect));
case SceneEffect::DropShadow: return effectDropShadowRegion(static_cast<RenderEffectDropShadow*>(effect));
default: return false;
}
}
bool SwRenderer::render(RenderCompositor* cmp, const RenderEffect* effect, bool direct)
{
auto p = static_cast<SwCompositor*>(cmp);
if (p->image.channelSize != sizeof(uint32_t)) {
TVGERR("SW_ENGINE", "Not supported grayscale Gaussian Blur!");
return false;
}
switch (effect->type) {
case SceneEffect::GaussianBlur: {
return effectGaussianBlur(p, request(surface->channelSize, true), static_cast<const RenderEffectGaussianBlur*>(effect));
}
case SceneEffect::DropShadow: {
auto cmp1 = request(surface->channelSize, true);
cmp1->compositor->valid = false;
auto cmp2 = request(surface->channelSize, true);
SwSurface* surfaces[] = {cmp1, cmp2};
auto ret = effectDropShadow(p, surfaces, static_cast<const RenderEffectDropShadow*>(effect), direct);
cmp1->compositor->valid = true;
return ret;
}
case SceneEffect::Fill: {
return effectFill(p, static_cast<const RenderEffectFill*>(effect), direct);
}
case SceneEffect::Tint: {
return effectTint(p, static_cast<const RenderEffectTint*>(effect), direct);
}
case SceneEffect::Tritone: {
return effectTritone(p, static_cast<const RenderEffectTritone*>(effect), direct);
}
default: return false;
}
}
void SwRenderer::dispose(RenderEffect* effect)
{
tvg::free(effect->rd);
effect->rd = nullptr;
}
ColorSpace SwRenderer::colorSpace()
{
if (surface) return surface->cs;
else return ColorSpace::Unknown;
}
void SwRenderer::dispose(RenderData data)
{
auto task = static_cast<SwTask*>(data);
task->done();
task->dispose();
if (task->pushed) task->disposed = true;
else delete(task);
}
void* SwRenderer::prepareCommon(SwTask* task, const Matrix& transform, const Array<RenderData>& clips, uint8_t opacity, RenderUpdateFlag flags)
{
if (!surface || (transform.e11 == 0.0f && transform.e12 == 0.0f) || (transform.e21 == 0.0f && transform.e22 == 0.0f)) return task; //invalid
task->surface = surface;
task->mpool = mpool;
task->curBox = RenderRegion::intersect(vport, {{0, 0}, {int32_t(surface->w), int32_t(surface->h)}});
task->transform = transform;
task->clips = clips;
task->dirtyRegion = &dirtyRegion;
task->opacity = opacity;
task->nodirty = dirtyRegion.deactivated();
task->flags = flags;
if (!task->pushed) {
task->pushed = true;
tasks.push(task);
}
//TODO: Failed threading them. It would be better if it's possible.
//See: https://github.com/thorvg/thorvg/issues/1409
//Guarantee composition targets get ready.
if (flags & RenderUpdateFlag::Clip) {
ARRAY_FOREACH(p, clips) {
static_cast<SwTask*>(*p)->done();
}
}
if (flags) TaskScheduler::request(task);
return task;
}
RenderData SwRenderer::prepare(RenderSurface* surface, RenderData data, const Matrix& transform, Array<RenderData>& clips, uint8_t opacity, RenderUpdateFlag flags)
{
auto task = static_cast<SwImageTask*>(data);
if (task) task->done();
else {
task = new SwImageTask;
task->source = surface;
}
return prepareCommon(task, transform, clips, opacity, flags);
}
RenderData SwRenderer::prepare(const RenderShape& rshape, RenderData data, const Matrix& transform, Array<RenderData>& clips, uint8_t opacity, RenderUpdateFlag flags, bool clipper)
{
auto task = static_cast<SwShapeTask*>(data);
if (task) task->done();
else {
task = new SwShapeTask;
task->rshape = &rshape;
}
task->clipper = clipper;
return prepareCommon(task, transform, clips, opacity, flags);
}
bool SwRenderer::term()
{
if (rendererCnt > 0) return false;
mpoolTerm(globalMpool);
globalMpool = nullptr;
rendererCnt = -1;
return true;
}
SwRenderer* SwRenderer::gen(uint32_t threads)
{
//initialize engine
if (rendererCnt == -1) {
#ifdef THORVG_SW_OPENMP_SUPPORT
omp_set_num_threads(threads);
#endif
//Share the memory pool among the renderer
globalMpool = mpoolInit(threads);
threadsCnt = threads;
rendererCnt = 0;
}
return new SwRenderer;
}
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