static GrTexture* load_yuv_texture(GrContext* ctx, const GrUniqueKey& optionalKey,
const SkBitmap& bm, const GrSurfaceDesc& desc) {
// Subsets are not supported, the whole pixelRef is loaded when using YUV decoding
SkPixelRef* pixelRef = bm.pixelRef();
if ((nullptr == pixelRef) ||
(pixelRef->info().width() != bm.info().width()) ||
(pixelRef->info().height() != bm.info().height())) {
return nullptr;
}
const bool useCache = optionalKey.isValid();
SkYUVPlanesCache::Info yuvInfo;
SkAutoTUnref<SkCachedData> cachedData;
SkAutoMalloc storage;
if (useCache) {
cachedData.reset(SkYUVPlanesCache::FindAndRef(pixelRef->getGenerationID(), &yuvInfo));
}
void* planes[3];
if (cachedData.get()) {
planes[0] = (void*)cachedData->data();
planes[1] = (uint8_t*)planes[0] + yuvInfo.fSizeInMemory[0];
planes[2] = (uint8_t*)planes[1] + yuvInfo.fSizeInMemory[1];
} else {
// Fetch yuv plane sizes for memory allocation. Here, width and height can be
// rounded up to JPEG block size and be larger than the image's width and height.
if (!pixelRef->getYUV8Planes(yuvInfo.fSize, nullptr, nullptr, nullptr)) {
return nullptr;
}
// Allocate the memory for YUV
size_t totalSize(0);
for (int i = 0; i < 3; ++i) {
yuvInfo.fRowBytes[i] = yuvInfo.fSize[i].fWidth;
yuvInfo.fSizeInMemory[i] = yuvInfo.fRowBytes[i] * yuvInfo.fSize[i].fHeight;
totalSize += yuvInfo.fSizeInMemory[i];
}
if (useCache) {
cachedData.reset(SkResourceCache::NewCachedData(totalSize));
planes[0] = cachedData->writable_data();
} else {
storage.reset(totalSize);
planes[0] = storage.get();
}
planes[1] = (uint8_t*)planes[0] + yuvInfo.fSizeInMemory[0];
planes[2] = (uint8_t*)planes[1] + yuvInfo.fSizeInMemory[1];
// Get the YUV planes and update plane sizes to actual image size
if (!pixelRef->getYUV8Planes(yuvInfo.fSize, planes, yuvInfo.fRowBytes,
&yuvInfo.fColorSpace)) {
return nullptr;
}
if (useCache) {
// Decoding is done, cache the resulting YUV planes
SkYUVPlanesCache::Add(pixelRef->getGenerationID(), cachedData, &yuvInfo);
}
}
GrSurfaceDesc yuvDesc;
yuvDesc.fConfig = kAlpha_8_GrPixelConfig;
SkAutoTUnref<GrTexture> yuvTextures[3];
for (int i = 0; i < 3; ++i) {
yuvDesc.fWidth = yuvInfo.fSize[i].fWidth;
yuvDesc.fHeight = yuvInfo.fSize[i].fHeight;
bool needsExactTexture =
(yuvDesc.fWidth != yuvInfo.fSize[0].fWidth) ||
(yuvDesc.fHeight != yuvInfo.fSize[0].fHeight);
if (needsExactTexture) {
yuvTextures[i].reset(ctx->textureProvider()->createTexture(yuvDesc, true));
} else {
yuvTextures[i].reset(ctx->textureProvider()->createApproxTexture(yuvDesc));
}
if (!yuvTextures[i] ||
!yuvTextures[i]->writePixels(0, 0, yuvDesc.fWidth, yuvDesc.fHeight,
yuvDesc.fConfig, planes[i], yuvInfo.fRowBytes[i])) {
return nullptr;
}
}
GrSurfaceDesc rtDesc = desc;
rtDesc.fFlags = rtDesc.fFlags | kRenderTarget_GrSurfaceFlag;
GrTexture* result = create_texture_for_bmp(ctx, optionalKey, rtDesc, pixelRef, nullptr, 0);
if (!result) {
return nullptr;
}
GrRenderTarget* renderTarget = result->asRenderTarget();
SkASSERT(renderTarget);
GrPaint paint;
SkAutoTUnref<GrFragmentProcessor>
yuvToRgbProcessor(GrYUVtoRGBEffect::Create(paint.getProcessorDataManager(), yuvTextures[0],
yuvTextures[1], yuvTextures[2],
yuvInfo.fSize, yuvInfo.fColorSpace));
paint.addColorFragmentProcessor(yuvToRgbProcessor);
SkRect r = SkRect::MakeWH(SkIntToScalar(yuvInfo.fSize[0].fWidth),
SkIntToScalar(yuvInfo.fSize[0].fHeight));
GrDrawContext* drawContext = ctx->drawContext();
if (!drawContext) {
return nullptr;
}
drawContext->drawRect(renderTarget, GrClip::WideOpen(), paint, SkMatrix::I(), r);
return result;
}
sk_sp<SkImage> SkImage::MakeFromYUVTexturesCopy(GrContext* ctx , SkYUVColorSpace colorSpace,
const GrBackendObject yuvTextureHandles[3],
const SkISize yuvSizes[3],
GrSurfaceOrigin origin) {
const SkBudgeted budgeted = SkBudgeted::kYes;
if (yuvSizes[0].fWidth <= 0 || yuvSizes[0].fHeight <= 0 ||
yuvSizes[1].fWidth <= 0 || yuvSizes[1].fHeight <= 0 ||
yuvSizes[2].fWidth <= 0 || yuvSizes[2].fHeight <= 0) {
return nullptr;
}
static const GrPixelConfig kConfig = kAlpha_8_GrPixelConfig;
GrBackendTextureDesc yDesc;
yDesc.fConfig = kConfig;
yDesc.fOrigin = origin;
yDesc.fSampleCnt = 0;
yDesc.fTextureHandle = yuvTextureHandles[0];
yDesc.fWidth = yuvSizes[0].fWidth;
yDesc.fHeight = yuvSizes[0].fHeight;
GrBackendTextureDesc uDesc;
uDesc.fConfig = kConfig;
uDesc.fOrigin = origin;
uDesc.fSampleCnt = 0;
uDesc.fTextureHandle = yuvTextureHandles[1];
uDesc.fWidth = yuvSizes[1].fWidth;
uDesc.fHeight = yuvSizes[1].fHeight;
GrBackendTextureDesc vDesc;
vDesc.fConfig = kConfig;
vDesc.fOrigin = origin;
vDesc.fSampleCnt = 0;
vDesc.fTextureHandle = yuvTextureHandles[2];
vDesc.fWidth = yuvSizes[2].fWidth;
vDesc.fHeight = yuvSizes[2].fHeight;
SkAutoTUnref<GrTexture> yTex(ctx->textureProvider()->wrapBackendTexture(
yDesc, kBorrow_GrWrapOwnership));
SkAutoTUnref<GrTexture> uTex(ctx->textureProvider()->wrapBackendTexture(
uDesc, kBorrow_GrWrapOwnership));
SkAutoTUnref<GrTexture> vTex(ctx->textureProvider()->wrapBackendTexture(
vDesc, kBorrow_GrWrapOwnership));
if (!yTex || !uTex || !vTex) {
return nullptr;
}
const int width = yuvSizes[0].fWidth;
const int height = yuvSizes[0].fHeight;
// Needs to be a render target in order to draw to it for the yuv->rgb conversion.
sk_sp<GrDrawContext> drawContext(ctx->newDrawContext(SkBackingFit::kExact,
width, height,
kRGBA_8888_GrPixelConfig,
0,
origin));
if (!drawContext) {
return nullptr;
}
GrPaint paint;
paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
paint.addColorFragmentProcessor(GrYUVEffect::CreateYUVToRGB(yTex, uTex, vTex, yuvSizes,
colorSpace))->unref();
const SkRect rect = SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height));
drawContext->drawRect(GrNoClip(), paint, SkMatrix::I(), rect);
ctx->flushSurfaceWrites(drawContext->accessRenderTarget());
return sk_make_sp<SkImage_Gpu>(width, height, kNeedNewImageUniqueID,
kOpaque_SkAlphaType,
drawContext->asTexture().get(), budgeted);
}
// creates a new texture that is the input texture scaled up. If optionalKey is valid it will be
// set on the new texture. stretch controls whether the scaling is done using nearest or bilerp
// filtering and the size to stretch the texture to.
GrTexture* stretch_texture(GrTexture* inputTexture, const Stretch& stretch,
SkPixelRef* pixelRef,
const GrUniqueKey& optionalKey) {
SkASSERT(Stretch::kNone_Type != stretch.fType);
GrContext* context = inputTexture->getContext();
SkASSERT(context);
const GrCaps* caps = context->caps();
// Either it's a cache miss or the original wasn't cached to begin with.
GrSurfaceDesc rtDesc = inputTexture->desc();
rtDesc.fFlags = rtDesc.fFlags | kRenderTarget_GrSurfaceFlag;
rtDesc.fWidth = stretch.fWidth;
rtDesc.fHeight = stretch.fHeight;
rtDesc.fConfig = GrMakePixelConfigUncompressed(rtDesc.fConfig);
// If the config isn't renderable try converting to either A8 or an 32 bit config. Otherwise,
// fail.
if (!caps->isConfigRenderable(rtDesc.fConfig, false)) {
if (GrPixelConfigIsAlphaOnly(rtDesc.fConfig)) {
if (caps->isConfigRenderable(kAlpha_8_GrPixelConfig, false)) {
rtDesc.fConfig = kAlpha_8_GrPixelConfig;
} else if (caps->isConfigRenderable(kSkia8888_GrPixelConfig, false)) {
rtDesc.fConfig = kSkia8888_GrPixelConfig;
} else {
return nullptr;
}
} else if (kRGB_GrColorComponentFlags ==
(kRGB_GrColorComponentFlags & GrPixelConfigComponentMask(rtDesc.fConfig))) {
if (caps->isConfigRenderable(kSkia8888_GrPixelConfig, false)) {
rtDesc.fConfig = kSkia8888_GrPixelConfig;
} else {
return nullptr;
}
} else {
return nullptr;
}
}
GrTexture* stretched = create_texture_for_bmp(context, optionalKey, rtDesc, pixelRef, nullptr, 0);
if (!stretched) {
return nullptr;
}
GrPaint paint;
// If filtering is not desired then we want to ensure all texels in the resampled image are
// copies of texels from the original.
GrTextureParams params(SkShader::kClamp_TileMode,
Stretch::kBilerp_Type == stretch.fType ?
GrTextureParams::kBilerp_FilterMode :
GrTextureParams::kNone_FilterMode);
paint.addColorTextureProcessor(inputTexture, SkMatrix::I(), params);
SkRect rect = SkRect::MakeWH(SkIntToScalar(rtDesc.fWidth), SkIntToScalar(rtDesc.fHeight));
SkRect localRect = SkRect::MakeWH(1.f, 1.f);
GrDrawContext* drawContext = context->drawContext();
if (!drawContext) {
return nullptr;
}
drawContext->drawNonAARectToRect(stretched->asRenderTarget(), GrClip::WideOpen(), paint,
SkMatrix::I(), rect, localRect);
return stretched;
}
GrTexture* GaussianBlur(GrContext* context,
GrTexture* srcTexture,
bool canClobberSrc,
const SkRect& rect,
bool cropToRect,
float sigmaX,
float sigmaY) {
SkASSERT(NULL != context);
GrContext::AutoRenderTarget art(context);
GrContext::AutoMatrix am;
am.setIdentity(context);
SkIRect clearRect;
int scaleFactorX, radiusX;
int scaleFactorY, radiusY;
sigmaX = adjust_sigma(sigmaX, &scaleFactorX, &radiusX);
sigmaY = adjust_sigma(sigmaY, &scaleFactorY, &radiusY);
SkRect srcRect(rect);
scale_rect(&srcRect, 1.0f / scaleFactorX, 1.0f / scaleFactorY);
srcRect.roundOut();
scale_rect(&srcRect, static_cast<float>(scaleFactorX),
static_cast<float>(scaleFactorY));
GrContext::AutoClip acs(context, SkRect::MakeWH(srcRect.width(), srcRect.height()));
SkASSERT(kBGRA_8888_GrPixelConfig == srcTexture->config() ||
kRGBA_8888_GrPixelConfig == srcTexture->config() ||
kAlpha_8_GrPixelConfig == srcTexture->config());
GrTextureDesc desc;
desc.fFlags = kRenderTarget_GrTextureFlagBit | kNoStencil_GrTextureFlagBit;
desc.fWidth = SkScalarFloorToInt(srcRect.width());
desc.fHeight = SkScalarFloorToInt(srcRect.height());
desc.fConfig = srcTexture->config();
GrAutoScratchTexture temp1, temp2;
GrTexture* dstTexture = temp1.set(context, desc);
GrTexture* tempTexture = canClobberSrc ? srcTexture : temp2.set(context, desc);
if (NULL == dstTexture || NULL == tempTexture) {
return NULL;
}
for (int i = 1; i < scaleFactorX || i < scaleFactorY; i *= 2) {
GrPaint paint;
SkMatrix matrix;
matrix.setIDiv(srcTexture->width(), srcTexture->height());
context->setRenderTarget(dstTexture->asRenderTarget());
SkRect dstRect(srcRect);
if (cropToRect && i == 1) {
dstRect.offset(-dstRect.fLeft, -dstRect.fTop);
SkRect domain;
matrix.mapRect(&domain, rect);
domain.inset(i < scaleFactorX ? SK_ScalarHalf / srcTexture->width() : 0.0f,
i < scaleFactorY ? SK_ScalarHalf / srcTexture->height() : 0.0f);
SkAutoTUnref<GrEffectRef> effect(GrTextureDomainEffect::Create(
srcTexture,
matrix,
domain,
GrTextureDomainEffect::kDecal_WrapMode,
GrTextureParams::kBilerp_FilterMode));
paint.addColorEffect(effect);
} else {
GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
paint.addColorTextureEffect(srcTexture, matrix, params);
}
scale_rect(&dstRect, i < scaleFactorX ? 0.5f : 1.0f,
i < scaleFactorY ? 0.5f : 1.0f);
context->drawRectToRect(paint, dstRect, srcRect);
srcRect = dstRect;
srcTexture = dstTexture;
SkTSwap(dstTexture, tempTexture);
}
SkIRect srcIRect;
srcRect.roundOut(&srcIRect);
if (sigmaX > 0.0f) {
if (scaleFactorX > 1) {
// Clear out a radius to the right of the srcRect to prevent the
// X convolution from reading garbage.
clearRect = SkIRect::MakeXYWH(srcIRect.fRight, srcIRect.fTop,
radiusX, srcIRect.height());
context->clear(&clearRect, 0x0, false);
}
context->setRenderTarget(dstTexture->asRenderTarget());
SkRect dstRect = SkRect::MakeWH(srcRect.width(), srcRect.height());
convolve_gaussian(context, srcRect, dstRect, srcTexture,
Gr1DKernelEffect::kX_Direction, radiusX, sigmaX, cropToRect);
srcTexture = dstTexture;
srcRect = dstRect;
SkTSwap(dstTexture, tempTexture);
}
if (sigmaY > 0.0f) {
if (scaleFactorY > 1 || sigmaX > 0.0f) {
// Clear out a radius below the srcRect to prevent the Y
// convolution from reading garbage.
clearRect = SkIRect::MakeXYWH(srcIRect.fLeft, srcIRect.fBottom,
srcIRect.width(), radiusY);
context->clear(&clearRect, 0x0, false);
}
context->setRenderTarget(dstTexture->asRenderTarget());
SkRect dstRect = SkRect::MakeWH(srcRect.width(), srcRect.height());
convolve_gaussian(context, srcRect, dstRect, srcTexture,
Gr1DKernelEffect::kY_Direction, radiusY, sigmaY, cropToRect);
srcTexture = dstTexture;
srcRect = dstRect;
SkTSwap(dstTexture, tempTexture);
}
if (scaleFactorX > 1 || scaleFactorY > 1) {
// Clear one pixel to the right and below, to accommodate bilinear
// upsampling.
clearRect = SkIRect::MakeXYWH(srcIRect.fLeft, srcIRect.fBottom,
srcIRect.width() + 1, 1);
context->clear(&clearRect, 0x0, false);
clearRect = SkIRect::MakeXYWH(srcIRect.fRight, srcIRect.fTop,
1, srcIRect.height());
context->clear(&clearRect, 0x0, false);
SkMatrix matrix;
matrix.setIDiv(srcTexture->width(), srcTexture->height());
context->setRenderTarget(dstTexture->asRenderTarget());
GrPaint paint;
// FIXME: this should be mitchell, not bilinear.
GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
paint.addColorTextureEffect(srcTexture, matrix, params);
SkRect dstRect(srcRect);
scale_rect(&dstRect, (float) scaleFactorX, (float) scaleFactorY);
context->drawRectToRect(paint, dstRect, srcRect);
srcRect = dstRect;
srcTexture = dstTexture;
SkTSwap(dstTexture, tempTexture);
}
if (srcTexture == temp1.texture()) {
return temp1.detach();
} else if (srcTexture == temp2.texture()) {
return temp2.detach();
} else {
srcTexture->ref();
return srcTexture;
}
}
bool GrDrawingManager::ProgramUnitTest(GrContext* context, int maxStages, int maxLevels) {
GrDrawingManager* drawingManager = context->contextPriv().drawingManager();
sk_sp<GrTextureProxy> proxies[2];
// setup dummy textures
GrSurfaceDesc dummyDesc;
dummyDesc.fFlags = kRenderTarget_GrSurfaceFlag;
dummyDesc.fOrigin = kBottomLeft_GrSurfaceOrigin;
dummyDesc.fConfig = kRGBA_8888_GrPixelConfig;
dummyDesc.fWidth = 34;
dummyDesc.fHeight = 18;
proxies[0] = GrSurfaceProxy::MakeDeferred(context->resourceProvider(),
dummyDesc, SkBudgeted::kNo, nullptr, 0);
dummyDesc.fFlags = kNone_GrSurfaceFlags;
dummyDesc.fOrigin = kTopLeft_GrSurfaceOrigin;
dummyDesc.fConfig = kAlpha_8_GrPixelConfig;
dummyDesc.fWidth = 16;
dummyDesc.fHeight = 22;
proxies[1] = GrSurfaceProxy::MakeDeferred(context->resourceProvider(),
dummyDesc, SkBudgeted::kNo, nullptr, 0);
if (!proxies[0] || !proxies[1]) {
SkDebugf("Could not allocate dummy textures");
return false;
}
// dummy scissor state
GrScissorState scissor;
SkRandom random;
static const int NUM_TESTS = 1024;
for (int t = 0; t < NUM_TESTS; t++) {
// setup random render target(can fail)
sk_sp<GrRenderTargetContext> renderTargetContext(random_render_target_context(
context, &random, context->caps()));
if (!renderTargetContext) {
SkDebugf("Could not allocate renderTargetContext");
return false;
}
GrPaint paint;
GrProcessorTestData ptd(&random, context, renderTargetContext.get(), proxies);
set_random_color_coverage_stages(&paint, &ptd, maxStages, maxLevels);
set_random_xpf(&paint, &ptd);
set_random_state(&paint, &random);
GrDrawRandomOp(&random, renderTargetContext.get(), std::move(paint));
}
// Flush everything, test passes if flush is successful(ie, no asserts are hit, no crashes)
drawingManager->flush(nullptr);
// Validate that GrFPs work correctly without an input.
sk_sp<GrRenderTargetContext> renderTargetContext(context->makeDeferredRenderTargetContext(
SkBackingFit::kExact,
kRenderTargetWidth,
kRenderTargetHeight,
kRGBA_8888_GrPixelConfig,
nullptr));
if (!renderTargetContext) {
SkDebugf("Could not allocate a renderTargetContext");
return false;
}
int fpFactoryCnt = GrProcessorTestFactory<GrFragmentProcessor>::Count();
for (int i = 0; i < fpFactoryCnt; ++i) {
// Since FP factories internally randomize, call each 10 times.
for (int j = 0; j < 10; ++j) {
GrProcessorTestData ptd(&random, context, renderTargetContext.get(), proxies);
GrPaint paint;
paint.setXPFactory(GrPorterDuffXPFactory::Get(SkBlendMode::kSrc));
sk_sp<GrFragmentProcessor> fp(
GrProcessorTestFactory<GrFragmentProcessor>::MakeIdx(i, &ptd));
sk_sp<GrFragmentProcessor> blockFP(
BlockInputFragmentProcessor::Make(std::move(fp)));
paint.addColorFragmentProcessor(std::move(blockFP));
GrDrawRandomOp(&random, renderTargetContext.get(), std::move(paint));
drawingManager->flush(nullptr);
}
}
return true;
}
GrTexture* GaussianBlur(GrContext* context,
GrTexture* srcTexture,
bool canClobberSrc,
const SkRect& rect,
bool cropToRect,
float sigmaX,
float sigmaY) {
SkASSERT(context);
SkIRect clearRect;
int scaleFactorX, radiusX;
int scaleFactorY, radiusY;
int maxTextureSize = context->getMaxTextureSize();
sigmaX = adjust_sigma(sigmaX, maxTextureSize, &scaleFactorX, &radiusX);
sigmaY = adjust_sigma(sigmaY, maxTextureSize, &scaleFactorY, &radiusY);
SkRect srcRect(rect);
scale_rect(&srcRect, 1.0f / scaleFactorX, 1.0f / scaleFactorY);
srcRect.roundOut(&srcRect);
scale_rect(&srcRect, static_cast<float>(scaleFactorX),
static_cast<float>(scaleFactorY));
// setup new clip
GrClip clip(SkRect::MakeWH(srcRect.width(), srcRect.height()));
SkASSERT(kBGRA_8888_GrPixelConfig == srcTexture->config() ||
kRGBA_8888_GrPixelConfig == srcTexture->config() ||
kAlpha_8_GrPixelConfig == srcTexture->config());
GrSurfaceDesc desc;
desc.fFlags = kRenderTarget_GrSurfaceFlag;
desc.fWidth = SkScalarFloorToInt(srcRect.width());
desc.fHeight = SkScalarFloorToInt(srcRect.height());
desc.fConfig = srcTexture->config();
GrTexture* dstTexture;
GrTexture* tempTexture;
SkAutoTUnref<GrTexture> temp1, temp2;
temp1.reset(context->textureProvider()->refScratchTexture(
desc, GrTextureProvider::kApprox_ScratchTexMatch));
dstTexture = temp1.get();
if (canClobberSrc) {
tempTexture = srcTexture;
} else {
temp2.reset(context->textureProvider()->refScratchTexture(
desc, GrTextureProvider::kApprox_ScratchTexMatch));
tempTexture = temp2.get();
}
if (NULL == dstTexture || NULL == tempTexture) {
return NULL;
}
GrDrawContext* drawContext = context->drawContext();
if (!drawContext) {
return NULL;
}
for (int i = 1; i < scaleFactorX || i < scaleFactorY; i *= 2) {
GrPaint paint;
SkMatrix matrix;
matrix.setIDiv(srcTexture->width(), srcTexture->height());
SkRect dstRect(srcRect);
if (cropToRect && i == 1) {
dstRect.offset(-dstRect.fLeft, -dstRect.fTop);
SkRect domain;
matrix.mapRect(&domain, rect);
domain.inset(i < scaleFactorX ? SK_ScalarHalf / srcTexture->width() : 0.0f,
i < scaleFactorY ? SK_ScalarHalf / srcTexture->height() : 0.0f);
SkAutoTUnref<GrFragmentProcessor> fp( GrTextureDomainEffect::Create(
srcTexture,
matrix,
domain,
GrTextureDomain::kDecal_Mode,
GrTextureParams::kBilerp_FilterMode));
paint.addColorProcessor(fp);
} else {
GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
paint.addColorTextureProcessor(srcTexture, matrix, params);
}
scale_rect(&dstRect, i < scaleFactorX ? 0.5f : 1.0f,
i < scaleFactorY ? 0.5f : 1.0f);
drawContext->drawNonAARectToRect(dstTexture->asRenderTarget(), clip, paint, SkMatrix::I(),
dstRect, srcRect);
srcRect = dstRect;
srcTexture = dstTexture;
SkTSwap(dstTexture, tempTexture);
}
const SkIRect srcIRect = srcRect.roundOut();
// For really small blurs(Certainly no wider than 5x5 on desktop gpus) it is faster to just
// launch a single non separable kernel vs two launches
if (sigmaX > 0.0f && sigmaY > 0 &&
(2 * radiusX + 1) * (2 * radiusY + 1) <= MAX_KERNEL_SIZE) {
// We shouldn't be scaling because this is a small size blur
SkASSERT((scaleFactorX == scaleFactorY) == 1);
SkRect dstRect = SkRect::MakeWH(srcRect.width(), srcRect.height());
convolve_gaussian_2d(drawContext, dstTexture->asRenderTarget(), clip, srcRect, dstRect,
srcTexture, radiusX, radiusY, sigmaX, sigmaY, cropToRect, srcIRect);
srcTexture = dstTexture;
srcRect = dstRect;
SkTSwap(dstTexture, tempTexture);
} else {
if (sigmaX > 0.0f) {
if (scaleFactorX > 1) {
// Clear out a radius to the right of the srcRect to prevent the
// X convolution from reading garbage.
clearRect = SkIRect::MakeXYWH(srcIRect.fRight, srcIRect.fTop,
radiusX, srcIRect.height());
drawContext->clear(srcTexture->asRenderTarget(), &clearRect, 0x0, false);
}
SkRect dstRect = SkRect::MakeWH(srcRect.width(), srcRect.height());
convolve_gaussian(drawContext, dstTexture->asRenderTarget(), clip, srcRect, dstRect,
srcTexture, Gr1DKernelEffect::kX_Direction, radiusX, sigmaX,
cropToRect);
srcTexture = dstTexture;
srcRect = dstRect;
SkTSwap(dstTexture, tempTexture);
}
if (sigmaY > 0.0f) {
if (scaleFactorY > 1 || sigmaX > 0.0f) {
// Clear out a radius below the srcRect to prevent the Y
// convolution from reading garbage.
clearRect = SkIRect::MakeXYWH(srcIRect.fLeft, srcIRect.fBottom,
srcIRect.width(), radiusY);
drawContext->clear(srcTexture->asRenderTarget(), &clearRect, 0x0, false);
}
SkRect dstRect = SkRect::MakeWH(srcRect.width(), srcRect.height());
convolve_gaussian(drawContext, dstTexture->asRenderTarget(), clip, srcRect,
dstRect, srcTexture, Gr1DKernelEffect::kY_Direction, radiusY, sigmaY,
cropToRect);
srcTexture = dstTexture;
srcRect = dstRect;
SkTSwap(dstTexture, tempTexture);
}
}
if (scaleFactorX > 1 || scaleFactorY > 1) {
// Clear one pixel to the right and below, to accommodate bilinear
// upsampling.
clearRect = SkIRect::MakeXYWH(srcIRect.fLeft, srcIRect.fBottom,
srcIRect.width() + 1, 1);
drawContext->clear(srcTexture->asRenderTarget(), &clearRect, 0x0, false);
clearRect = SkIRect::MakeXYWH(srcIRect.fRight, srcIRect.fTop,
1, srcIRect.height());
drawContext->clear(srcTexture->asRenderTarget(), &clearRect, 0x0, false);
SkMatrix matrix;
matrix.setIDiv(srcTexture->width(), srcTexture->height());
GrPaint paint;
// FIXME: this should be mitchell, not bilinear.
GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
paint.addColorTextureProcessor(srcTexture, matrix, params);
SkRect dstRect(srcRect);
scale_rect(&dstRect, (float) scaleFactorX, (float) scaleFactorY);
drawContext->drawNonAARectToRect(dstTexture->asRenderTarget(), clip, paint,
SkMatrix::I(), dstRect, srcRect);
srcRect = dstRect;
srcTexture = dstTexture;
SkTSwap(dstTexture, tempTexture);
}
return SkRef(srcTexture);
}
bool GrDefaultPathRenderer::internalDrawPath(GrDrawContext* drawContext,
const GrPaint& paint,
const GrUserStencilSettings& userStencilSettings,
const GrClip& clip,
const SkMatrix& viewMatrix,
const GrShape& shape,
bool stencilOnly) {
SkPath path;
shape.asPath(&path);
SkScalar hairlineCoverage;
uint8_t newCoverage = 0xff;
bool isHairline = false;
if (IsStrokeHairlineOrEquivalent(shape.style(), viewMatrix, &hairlineCoverage)) {
newCoverage = SkScalarRoundToInt(hairlineCoverage * 0xff);
isHairline = true;
} else {
SkASSERT(shape.style().isSimpleFill());
}
int passCount = 0;
const GrUserStencilSettings* passes[3];
GrDrawFace drawFace[3];
bool reverse = false;
bool lastPassIsBounds;
if (isHairline) {
passCount = 1;
if (stencilOnly) {
passes[0] = &gDirectToStencil;
} else {
passes[0] = &userStencilSettings;
}
lastPassIsBounds = false;
drawFace[0] = GrDrawFace::kBoth;
} else {
if (single_pass_shape(shape)) {
passCount = 1;
if (stencilOnly) {
passes[0] = &gDirectToStencil;
} else {
passes[0] = &userStencilSettings;
}
drawFace[0] = GrDrawFace::kBoth;
lastPassIsBounds = false;
} else {
switch (path.getFillType()) {
case SkPath::kInverseEvenOdd_FillType:
reverse = true;
// fallthrough
case SkPath::kEvenOdd_FillType:
passes[0] = &gEOStencilPass;
if (stencilOnly) {
passCount = 1;
lastPassIsBounds = false;
} else {
passCount = 2;
lastPassIsBounds = true;
if (reverse) {
passes[1] = &gInvEOColorPass;
} else {
passes[1] = &gEOColorPass;
}
}
drawFace[0] = drawFace[1] = GrDrawFace::kBoth;
break;
case SkPath::kInverseWinding_FillType:
reverse = true;
// fallthrough
case SkPath::kWinding_FillType:
if (fSeparateStencil) {
if (fStencilWrapOps) {
passes[0] = &gWindStencilSeparateWithWrap;
} else {
passes[0] = &gWindStencilSeparateNoWrap;
}
passCount = 2;
drawFace[0] = GrDrawFace::kBoth;
} else {
if (fStencilWrapOps) {
passes[0] = &gWindSingleStencilWithWrapInc;
passes[1] = &gWindSingleStencilWithWrapDec;
} else {
passes[0] = &gWindSingleStencilNoWrapInc;
passes[1] = &gWindSingleStencilNoWrapDec;
}
// which is cw and which is ccw is arbitrary.
drawFace[0] = GrDrawFace::kCW;
drawFace[1] = GrDrawFace::kCCW;
passCount = 3;
}
if (stencilOnly) {
lastPassIsBounds = false;
--passCount;
} else {
lastPassIsBounds = true;
drawFace[passCount-1] = GrDrawFace::kBoth;
if (reverse) {
passes[passCount-1] = &gInvWindColorPass;
} else {
passes[passCount-1] = &gWindColorPass;
}
}
break;
default:
SkDEBUGFAIL("Unknown path fFill!");
return false;
}
}
}
SkScalar tol = GrPathUtils::kDefaultTolerance;
SkScalar srcSpaceTol = GrPathUtils::scaleToleranceToSrc(tol, viewMatrix, path.getBounds());
SkRect devBounds;
GetPathDevBounds(path, drawContext->width(), drawContext->height(), viewMatrix, &devBounds);
for (int p = 0; p < passCount; ++p) {
if (lastPassIsBounds && (p == passCount-1)) {
SkRect bounds;
SkMatrix localMatrix = SkMatrix::I();
if (reverse) {
// draw over the dev bounds (which will be the whole dst surface for inv fill).
bounds = devBounds;
SkMatrix vmi;
// mapRect through persp matrix may not be correct
if (!viewMatrix.hasPerspective() && viewMatrix.invert(&vmi)) {
vmi.mapRect(&bounds);
} else {
if (!viewMatrix.invert(&localMatrix)) {
return false;
}
}
} else {
bounds = path.getBounds();
}
const SkMatrix& viewM = (reverse && viewMatrix.hasPerspective()) ? SkMatrix::I() :
viewMatrix;
SkAutoTUnref<GrDrawBatch> batch(
GrRectBatchFactory::CreateNonAAFill(paint.getColor(), viewM, bounds, nullptr,
&localMatrix));
SkASSERT(GrDrawFace::kBoth == drawFace[p]);
GrPipelineBuilder pipelineBuilder(paint, drawContext->mustUseHWAA(paint));
pipelineBuilder.setDrawFace(drawFace[p]);
pipelineBuilder.setUserStencil(passes[p]);
drawContext->drawBatch(pipelineBuilder, clip, batch);
} else {
SkAutoTUnref<GrDrawBatch> batch(new DefaultPathBatch(paint.getColor(), path,
srcSpaceTol,
newCoverage, viewMatrix,
isHairline, devBounds));
GrPipelineBuilder pipelineBuilder(paint, drawContext->mustUseHWAA(paint));
pipelineBuilder.setDrawFace(drawFace[p]);
pipelineBuilder.setUserStencil(passes[p]);
if (passCount > 1) {
pipelineBuilder.setDisableColorXPFactory();
}
drawContext->drawBatch(pipelineBuilder, clip, batch);
}
}
return true;
}
sk_sp<SkSpecialImage> SkXfermodeImageFilter::filterImageGPU(SkSpecialImage* source,
sk_sp<SkSpecialImage> background,
const SkIPoint& backgroundOffset,
sk_sp<SkSpecialImage> foreground,
const SkIPoint& foregroundOffset,
const SkIRect& bounds) const {
SkASSERT(source->isTextureBacked());
GrContext* context = source->getContext();
sk_sp<GrTexture> backgroundTex, foregroundTex;
if (background) {
backgroundTex = background->asTextureRef(context);
}
if (foreground) {
foregroundTex = foreground->asTextureRef(context);
}
GrPaint paint;
// SRGBTODO: AllowSRGBInputs?
sk_sp<GrFragmentProcessor> bgFP;
if (backgroundTex) {
SkMatrix backgroundMatrix;
backgroundMatrix.setIDiv(backgroundTex->width(), backgroundTex->height());
backgroundMatrix.preTranslate(SkIntToScalar(-backgroundOffset.fX),
SkIntToScalar(-backgroundOffset.fY));
bgFP = GrTextureDomainEffect::Make(
backgroundTex.get(), backgroundMatrix,
GrTextureDomain::MakeTexelDomain(backgroundTex.get(),
background->subset()),
GrTextureDomain::kDecal_Mode,
GrTextureParams::kNone_FilterMode);
} else {
bgFP = GrConstColorProcessor::Make(GrColor_TRANSPARENT_BLACK,
GrConstColorProcessor::kIgnore_InputMode);
}
if (foregroundTex) {
SkMatrix foregroundMatrix;
foregroundMatrix.setIDiv(foregroundTex->width(), foregroundTex->height());
foregroundMatrix.preTranslate(SkIntToScalar(-foregroundOffset.fX),
SkIntToScalar(-foregroundOffset.fY));
sk_sp<GrFragmentProcessor> foregroundFP;
foregroundFP = GrTextureDomainEffect::Make(
foregroundTex.get(), foregroundMatrix,
GrTextureDomain::MakeTexelDomain(foregroundTex.get(),
foreground->subset()),
GrTextureDomain::kDecal_Mode,
GrTextureParams::kNone_FilterMode);
paint.addColorFragmentProcessor(std::move(foregroundFP));
// A null fMode is interpreted to mean kSrcOver_Mode (to match raster).
SkAutoTUnref<SkXfermode> mode(SkSafeRef(fMode.get()));
if (!mode) {
// It would be awesome to use SkXfermode::Create here but it knows better
// than us and won't return a kSrcOver_Mode SkXfermode. That means we
// have to get one the hard way.
struct ProcCoeff rec;
rec.fProc = SkXfermode::GetProc(SkXfermode::kSrcOver_Mode);
SkXfermode::ModeAsCoeff(SkXfermode::kSrcOver_Mode, &rec.fSC, &rec.fDC);
mode.reset(new SkProcCoeffXfermode(rec, SkXfermode::kSrcOver_Mode));
}
sk_sp<GrFragmentProcessor> xferFP(
mode->makeFragmentProcessorForImageFilter(std::move(bgFP)));
// A null 'xferFP' here means kSrc_Mode was used in which case we can just proceed
if (xferFP) {
paint.addColorFragmentProcessor(std::move(xferFP));
}
} else {
paint.addColorFragmentProcessor(std::move(bgFP));
}
paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
sk_sp<GrDrawContext> drawContext(context->newDrawContext(SkBackingFit::kApprox,
bounds.width(), bounds.height(),
kSkia8888_GrPixelConfig));
if (!drawContext) {
return nullptr;
}
SkMatrix matrix;
matrix.setTranslate(SkIntToScalar(-bounds.left()), SkIntToScalar(-bounds.top()));
drawContext->drawRect(GrNoClip(), paint, matrix, SkRect::Make(bounds));
return SkSpecialImage::MakeFromGpu(SkIRect::MakeWH(bounds.width(), bounds.height()),
kNeedNewImageUniqueID_SpecialImage,
drawContext->asTexture());
}
static sk_sp<SkImage> make_from_yuv_textures_copy(GrContext* ctx, SkYUVColorSpace colorSpace,
bool nv12,
const GrBackendObject yuvTextureHandles[],
const SkISize yuvSizes[],
GrSurfaceOrigin origin,
sk_sp<SkColorSpace> imageColorSpace) {
const SkBudgeted budgeted = SkBudgeted::kYes;
if (yuvSizes[0].fWidth <= 0 || yuvSizes[0].fHeight <= 0 || yuvSizes[1].fWidth <= 0 ||
yuvSizes[1].fHeight <= 0) {
return nullptr;
}
if (!nv12 && (yuvSizes[2].fWidth <= 0 || yuvSizes[2].fHeight <= 0)) {
return nullptr;
}
const GrPixelConfig kConfig = nv12 ? kRGBA_8888_GrPixelConfig : kAlpha_8_GrPixelConfig;
GrBackendTextureDesc yDesc;
yDesc.fConfig = kConfig;
yDesc.fOrigin = origin;
yDesc.fSampleCnt = 0;
yDesc.fTextureHandle = yuvTextureHandles[0];
yDesc.fWidth = yuvSizes[0].fWidth;
yDesc.fHeight = yuvSizes[0].fHeight;
GrBackendTextureDesc uDesc;
uDesc.fConfig = kConfig;
uDesc.fOrigin = origin;
uDesc.fSampleCnt = 0;
uDesc.fTextureHandle = yuvTextureHandles[1];
uDesc.fWidth = yuvSizes[1].fWidth;
uDesc.fHeight = yuvSizes[1].fHeight;
sk_sp<GrSurfaceProxy> yProxy = GrSurfaceProxy::MakeWrappedBackend(ctx, yDesc);
sk_sp<GrSurfaceProxy> uProxy = GrSurfaceProxy::MakeWrappedBackend(ctx, uDesc);
sk_sp<GrSurfaceProxy> vProxy;
if (nv12) {
vProxy = uProxy;
} else {
GrBackendTextureDesc vDesc;
vDesc.fConfig = kConfig;
vDesc.fOrigin = origin;
vDesc.fSampleCnt = 0;
vDesc.fTextureHandle = yuvTextureHandles[2];
vDesc.fWidth = yuvSizes[2].fWidth;
vDesc.fHeight = yuvSizes[2].fHeight;
vProxy = GrSurfaceProxy::MakeWrappedBackend(ctx, vDesc);
}
if (!yProxy || !uProxy || !vProxy) {
return nullptr;
}
const int width = yuvSizes[0].fWidth;
const int height = yuvSizes[0].fHeight;
// Needs to be a render target in order to draw to it for the yuv->rgb conversion.
sk_sp<GrRenderTargetContext> renderTargetContext(ctx->makeRenderTargetContext(
SkBackingFit::kExact,
width, height,
kRGBA_8888_GrPixelConfig,
std::move(imageColorSpace),
0,
origin));
if (!renderTargetContext) {
return nullptr;
}
GrPaint paint;
paint.setPorterDuffXPFactory(SkBlendMode::kSrc);
paint.addColorFragmentProcessor(
GrYUVEffect::MakeYUVToRGB(ctx->resourceProvider(),
sk_ref_sp(yProxy->asTextureProxy()),
sk_ref_sp(uProxy->asTextureProxy()),
sk_ref_sp(vProxy->asTextureProxy()), yuvSizes, colorSpace, nv12));
const SkRect rect = SkRect::MakeIWH(width, height);
renderTargetContext->drawRect(GrNoClip(), std::move(paint), GrAA::kNo, SkMatrix::I(), rect);
if (!renderTargetContext->asSurfaceProxy()) {
return nullptr;
}
ctx->contextPriv().flushSurfaceWrites(renderTargetContext->asSurfaceProxy());
// MDB: this call is okay bc we know 'renderTargetContext' was exact
return sk_make_sp<SkImage_Gpu>(ctx, kNeedNewImageUniqueID,
kOpaque_SkAlphaType, renderTargetContext->asTextureProxyRef(),
renderTargetContext->refColorSpace(), budgeted);
}
bool SkDisplacementMapEffect::filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx,
SkBitmap* result, SkIPoint* offset) const {
SkBitmap colorBM = src;
SkIPoint colorOffset = SkIPoint::Make(0, 0);
if (!this->filterInputGPU(1, proxy, src, ctx, &colorBM, &colorOffset)) {
return false;
}
SkBitmap displacementBM = src;
SkIPoint displacementOffset = SkIPoint::Make(0, 0);
if (!this->filterInputGPU(0, proxy, src, ctx, &displacementBM, &displacementOffset)) {
return false;
}
SkIRect bounds;
// Since GrDisplacementMapEffect does bounds checking on color pixel access, we don't need to
// pad the color bitmap to bounds here.
if (!this->applyCropRect(ctx, colorBM, colorOffset, &bounds)) {
return false;
}
SkIRect displBounds;
if (!this->applyCropRect(ctx, proxy, displacementBM,
&displacementOffset, &displBounds, &displacementBM)) {
return false;
}
if (!bounds.intersect(displBounds)) {
return false;
}
GrTexture* color = colorBM.getTexture();
GrTexture* displacement = displacementBM.getTexture();
GrContext* context = color->getContext();
GrSurfaceDesc desc;
desc.fFlags = kRenderTarget_GrSurfaceFlag;
desc.fWidth = bounds.width();
desc.fHeight = bounds.height();
desc.fConfig = kSkia8888_GrPixelConfig;
SkAutoTUnref<GrTexture> dst(context->textureProvider()->createApproxTexture(desc));
if (!dst) {
return false;
}
SkVector scale = SkVector::Make(fScale, fScale);
ctx.ctm().mapVectors(&scale, 1);
GrPaint paint;
SkMatrix offsetMatrix = GrCoordTransform::MakeDivByTextureWHMatrix(displacement);
offsetMatrix.preTranslate(SkIntToScalar(colorOffset.fX - displacementOffset.fX),
SkIntToScalar(colorOffset.fY - displacementOffset.fY));
paint.addColorFragmentProcessor(
GrDisplacementMapEffect::Create(fXChannelSelector,
fYChannelSelector,
scale,
displacement,
offsetMatrix,
color,
colorBM.dimensions()))->unref();
paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
SkIRect colorBounds = bounds;
colorBounds.offset(-colorOffset);
SkMatrix matrix;
matrix.setTranslate(-SkIntToScalar(colorBounds.x()),
-SkIntToScalar(colorBounds.y()));
SkAutoTUnref<GrDrawContext> drawContext(context->drawContext(dst->asRenderTarget()));
if (!drawContext) {
return false;
}
drawContext->drawRect(GrClip::WideOpen(), paint, matrix, SkRect::Make(colorBounds));
offset->fX = bounds.left();
offset->fY = bounds.top();
GrWrapTextureInBitmap(dst, bounds.width(), bounds.height(), false, result);
return true;
}
GrTexture* GaussianBlur(GrContext* context,
GrTexture* srcTexture,
bool canClobberSrc,
const SkRect& dstBounds,
const SkRect* srcBounds,
float sigmaX,
float sigmaY,
GrTextureProvider::SizeConstraint constraint) {
SkASSERT(context);
SkIRect clearRect;
int scaleFactorX, radiusX;
int scaleFactorY, radiusY;
int maxTextureSize = context->caps()->maxTextureSize();
sigmaX = adjust_sigma(sigmaX, maxTextureSize, &scaleFactorX, &radiusX);
sigmaY = adjust_sigma(sigmaY, maxTextureSize, &scaleFactorY, &radiusY);
SkPoint srcOffset = SkPoint::Make(-dstBounds.x(), -dstBounds.y());
SkRect localDstBounds = SkRect::MakeWH(dstBounds.width(), dstBounds.height());
SkRect localSrcBounds;
SkRect srcRect;
if (srcBounds) {
srcRect = localSrcBounds = *srcBounds;
srcRect.offset(srcOffset);
srcBounds = &localSrcBounds;
} else {
srcRect = localDstBounds;
}
scale_rect(&srcRect, 1.0f / scaleFactorX, 1.0f / scaleFactorY);
srcRect.roundOut(&srcRect);
scale_rect(&srcRect, static_cast<float>(scaleFactorX),
static_cast<float>(scaleFactorY));
// setup new clip
GrClip clip(localDstBounds);
SkASSERT(kBGRA_8888_GrPixelConfig == srcTexture->config() ||
kRGBA_8888_GrPixelConfig == srcTexture->config() ||
kAlpha_8_GrPixelConfig == srcTexture->config());
GrSurfaceDesc desc;
desc.fFlags = kRenderTarget_GrSurfaceFlag;
desc.fWidth = SkScalarFloorToInt(dstBounds.width());
desc.fHeight = SkScalarFloorToInt(dstBounds.height());
desc.fConfig = srcTexture->config();
GrTexture* dstTexture;
GrTexture* tempTexture;
SkAutoTUnref<GrTexture> temp1, temp2;
temp1.reset(context->textureProvider()->createTexture(desc, constraint));
dstTexture = temp1.get();
if (canClobberSrc) {
tempTexture = srcTexture;
} else {
temp2.reset(context->textureProvider()->createTexture(desc, constraint));
tempTexture = temp2.get();
}
if (nullptr == dstTexture || nullptr == tempTexture) {
return nullptr;
}
SkAutoTUnref<GrDrawContext> srcDrawContext;
for (int i = 1; i < scaleFactorX || i < scaleFactorY; i *= 2) {
GrPaint paint;
SkMatrix matrix;
matrix.setIDiv(srcTexture->width(), srcTexture->height());
SkRect dstRect(srcRect);
if (srcBounds && i == 1) {
SkRect domain;
matrix.mapRect(&domain, *srcBounds);
domain.inset((i < scaleFactorX) ? SK_ScalarHalf / srcTexture->width() : 0.0f,
(i < scaleFactorY) ? SK_ScalarHalf / srcTexture->height() : 0.0f);
SkAutoTUnref<const GrFragmentProcessor> fp(GrTextureDomainEffect::Create(
srcTexture,
matrix,
domain,
GrTextureDomain::kDecal_Mode,
GrTextureParams::kBilerp_FilterMode));
paint.addColorFragmentProcessor(fp);
srcRect.offset(-srcOffset);
srcOffset.set(0, 0);
} else {
GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
paint.addColorTextureProcessor(srcTexture, matrix, params);
}
paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
scale_rect(&dstRect, i < scaleFactorX ? 0.5f : 1.0f,
i < scaleFactorY ? 0.5f : 1.0f);
SkAutoTUnref<GrDrawContext> dstDrawContext(
context->drawContext(dstTexture->asRenderTarget()));
if (!dstDrawContext) {
return nullptr;
}
dstDrawContext->fillRectToRect(clip, paint, SkMatrix::I(), dstRect, srcRect);
srcDrawContext.swap(dstDrawContext);
srcRect = dstRect;
srcTexture = dstTexture;
SkTSwap(dstTexture, tempTexture);
localSrcBounds = srcRect;
}
// For really small blurs (certainly no wider than 5x5 on desktop gpus) it is faster to just
// launch a single non separable kernel vs two launches
if (sigmaX > 0.0f && sigmaY > 0.0f &&
(2 * radiusX + 1) * (2 * radiusY + 1) <= MAX_KERNEL_SIZE) {
// We shouldn't be scaling because this is a small size blur
SkASSERT((1 == scaleFactorX) && (1 == scaleFactorY));
SkAutoTUnref<GrDrawContext> dstDrawContext(
context->drawContext(dstTexture->asRenderTarget()));
if (!dstDrawContext) {
return nullptr;
}
convolve_gaussian_2d(dstDrawContext, clip, srcRect,
srcTexture, radiusX, radiusY, sigmaX, sigmaY, srcBounds);
srcDrawContext.swap(dstDrawContext);
srcRect.offsetTo(0, 0);
srcTexture = dstTexture;
SkTSwap(dstTexture, tempTexture);
} else {
srcRect = localDstBounds;
scale_rect(&srcRect, 1.0f / scaleFactorX, 1.0f / scaleFactorY);
srcRect.roundOut(&srcRect);
const SkIRect srcIRect = srcRect.roundOut();
if (sigmaX > 0.0f) {
if (scaleFactorX > 1) {
// TODO: if we pass in the source draw context we don't need this here
if (!srcDrawContext) {
srcDrawContext.reset(context->drawContext(srcTexture->asRenderTarget()));
if (!srcDrawContext) {
return nullptr;
}
}
// Clear out a radius to the right of the srcRect to prevent the
// X convolution from reading garbage.
clearRect = SkIRect::MakeXYWH(srcIRect.fRight, srcIRect.fTop,
radiusX, srcIRect.height());
srcDrawContext->clear(&clearRect, 0x0, false);
}
SkAutoTUnref<GrDrawContext> dstDrawContext(
context->drawContext(dstTexture->asRenderTarget()));
if (!dstDrawContext) {
return nullptr;
}
convolve_gaussian(dstDrawContext, clip, srcRect,
srcTexture, Gr1DKernelEffect::kX_Direction, radiusX, sigmaX,
srcBounds, srcOffset);
srcDrawContext.swap(dstDrawContext);
srcTexture = dstTexture;
srcRect.offsetTo(0, 0);
SkTSwap(dstTexture, tempTexture);
localSrcBounds = srcRect;
srcOffset.set(0, 0);
}
if (sigmaY > 0.0f) {
if (scaleFactorY > 1 || sigmaX > 0.0f) {
// TODO: if we pass in the source draw context we don't need this here
if (!srcDrawContext) {
srcDrawContext.reset(context->drawContext(srcTexture->asRenderTarget()));
if (!srcDrawContext) {
return nullptr;
}
}
// Clear out a radius below the srcRect to prevent the Y
// convolution from reading garbage.
clearRect = SkIRect::MakeXYWH(srcIRect.fLeft, srcIRect.fBottom,
srcIRect.width(), radiusY);
srcDrawContext->clear(&clearRect, 0x0, false);
}
SkAutoTUnref<GrDrawContext> dstDrawContext(
context->drawContext(dstTexture->asRenderTarget()));
if (!dstDrawContext) {
return nullptr;
}
convolve_gaussian(dstDrawContext, clip, srcRect,
srcTexture, Gr1DKernelEffect::kY_Direction, radiusY, sigmaY,
srcBounds, srcOffset);
srcDrawContext.swap(dstDrawContext);
srcTexture = dstTexture;
srcRect.offsetTo(0, 0);
SkTSwap(dstTexture, tempTexture);
}
}
const SkIRect srcIRect = srcRect.roundOut();
if (scaleFactorX > 1 || scaleFactorY > 1) {
SkASSERT(srcDrawContext);
// Clear one pixel to the right and below, to accommodate bilinear
// upsampling.
clearRect = SkIRect::MakeXYWH(srcIRect.fLeft, srcIRect.fBottom,
srcIRect.width() + 1, 1);
srcDrawContext->clear(&clearRect, 0x0, false);
clearRect = SkIRect::MakeXYWH(srcIRect.fRight, srcIRect.fTop,
1, srcIRect.height());
srcDrawContext->clear(&clearRect, 0x0, false);
SkMatrix matrix;
matrix.setIDiv(srcTexture->width(), srcTexture->height());
GrPaint paint;
// FIXME: this should be mitchell, not bilinear.
GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
paint.addColorTextureProcessor(srcTexture, matrix, params);
paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
SkRect dstRect(srcRect);
scale_rect(&dstRect, (float) scaleFactorX, (float) scaleFactorY);
SkAutoTUnref<GrDrawContext> dstDrawContext(
context->drawContext(dstTexture->asRenderTarget()));
if (!dstDrawContext) {
return nullptr;
}
dstDrawContext->fillRectToRect(clip, paint, SkMatrix::I(), dstRect, srcRect);
srcDrawContext.swap(dstDrawContext);
srcRect = dstRect;
srcTexture = dstTexture;
SkTSwap(dstTexture, tempTexture);
}
return SkRef(srcTexture);
}
bool GrDashingEffect::DrawDashLine(const SkPoint pts[2], const GrPaint& paint,
const GrStrokeInfo& strokeInfo, GrGpu* gpu,
GrDrawTarget* target, const SkMatrix& vm) {
if (!can_fast_path_dash(pts, strokeInfo, *target, vm)) {
return false;
}
const SkPathEffect::DashInfo& info = strokeInfo.getDashInfo();
SkPaint::Cap cap = strokeInfo.getStrokeRec().getCap();
SkScalar srcStrokeWidth = strokeInfo.getStrokeRec().getWidth();
// the phase should be normalized to be [0, sum of all intervals)
SkASSERT(info.fPhase >= 0 && info.fPhase < info.fIntervals[0] + info.fIntervals[1]);
SkScalar srcPhase = info.fPhase;
// Rotate the src pts so they are aligned horizontally with pts[0].fX < pts[1].fX
SkMatrix srcRotInv;
SkPoint ptsRot[2];
if (pts[0].fY != pts[1].fY || pts[0].fX > pts[1].fX) {
SkMatrix rotMatrix;
align_to_x_axis(pts, &rotMatrix, ptsRot);
if(!rotMatrix.invert(&srcRotInv)) {
GrPrintf("Failed to create invertible rotation matrix!\n");
return false;
}
} else {
srcRotInv.reset();
memcpy(ptsRot, pts, 2 * sizeof(SkPoint));
}
bool useAA = paint.isAntiAlias();
// Scale corrections of intervals and stroke from view matrix
SkScalar parallelScale;
SkScalar perpScale;
calc_dash_scaling(¶llelScale, &perpScale, vm, ptsRot);
bool hasCap = SkPaint::kSquare_Cap == cap && 0 != srcStrokeWidth;
// We always want to at least stroke out half a pixel on each side in device space
// so 0.5f / perpScale gives us this min in src space
SkScalar halfSrcStroke = SkMaxScalar(srcStrokeWidth * 0.5f, 0.5f / perpScale);
SkScalar strokeAdj;
if (!hasCap) {
strokeAdj = 0.f;
} else {
strokeAdj = halfSrcStroke;
}
SkScalar startAdj = 0;
SkMatrix combinedMatrix = srcRotInv;
combinedMatrix.postConcat(vm);
bool lineDone = false;
SkRect startRect;
bool hasStartRect = false;
// If we are using AA, check to see if we are drawing a partial dash at the start. If so
// draw it separately here and adjust our start point accordingly
if (useAA) {
if (srcPhase > 0 && srcPhase < info.fIntervals[0]) {
SkPoint startPts[2];
startPts[0] = ptsRot[0];
startPts[1].fY = startPts[0].fY;
startPts[1].fX = SkMinScalar(startPts[0].fX + info.fIntervals[0] - srcPhase,
ptsRot[1].fX);
startRect.set(startPts, 2);
startRect.outset(strokeAdj, halfSrcStroke);
hasStartRect = true;
startAdj = info.fIntervals[0] + info.fIntervals[1] - srcPhase;
}
}
// adjustments for start and end of bounding rect so we only draw dash intervals
// contained in the original line segment.
startAdj += calc_start_adjustment(info);
if (startAdj != 0) {
ptsRot[0].fX += startAdj;
srcPhase = 0;
}
SkScalar endingInterval = 0;
SkScalar endAdj = calc_end_adjustment(info, ptsRot, srcPhase, &endingInterval);
ptsRot[1].fX -= endAdj;
if (ptsRot[0].fX >= ptsRot[1].fX) {
lineDone = true;
}
SkRect endRect;
bool hasEndRect = false;
// If we are using AA, check to see if we are drawing a partial dash at then end. If so
// draw it separately here and adjust our end point accordingly
if (useAA && !lineDone) {
// If we adjusted the end then we will not be drawing a partial dash at the end.
// If we didn't adjust the end point then we just need to make sure the ending
// dash isn't a full dash
if (0 == endAdj && endingInterval != info.fIntervals[0]) {
SkPoint endPts[2];
endPts[1] = ptsRot[1];
endPts[0].fY = endPts[1].fY;
endPts[0].fX = endPts[1].fX - endingInterval;
endRect.set(endPts, 2);
endRect.outset(strokeAdj, halfSrcStroke);
hasEndRect = true;
endAdj = endingInterval + info.fIntervals[1];
ptsRot[1].fX -= endAdj;
if (ptsRot[0].fX >= ptsRot[1].fX) {
lineDone = true;
}
}
}
if (startAdj != 0) {
srcPhase = 0;
}
// Change the dashing info from src space into device space
SkScalar devIntervals[2];
devIntervals[0] = info.fIntervals[0] * parallelScale;
devIntervals[1] = info.fIntervals[1] * parallelScale;
SkScalar devPhase = srcPhase * parallelScale;
SkScalar strokeWidth = srcStrokeWidth * perpScale;
if ((strokeWidth < 1.f && !useAA) || 0.f == strokeWidth) {
strokeWidth = 1.f;
}
SkScalar halfDevStroke = strokeWidth * 0.5f;
if (SkPaint::kSquare_Cap == cap && 0 != srcStrokeWidth) {
// add cap to on interveal and remove from off interval
devIntervals[0] += strokeWidth;
devIntervals[1] -= strokeWidth;
}
SkScalar startOffset = devIntervals[1] * 0.5f + devPhase;
SkScalar bloatX = useAA ? 0.5f / parallelScale : 0.f;
SkScalar bloatY = useAA ? 0.5f / perpScale : 0.f;
SkScalar devBloat = useAA ? 0.5f : 0.f;
GrDrawState* drawState = target->drawState();
if (devIntervals[1] <= 0.f && useAA) {
// Case when we end up drawing a solid AA rect
// Reset the start rect to draw this single solid rect
// but it requires to upload a new intervals uniform so we can mimic
// one giant dash
ptsRot[0].fX -= hasStartRect ? startAdj : 0;
ptsRot[1].fX += hasEndRect ? endAdj : 0;
startRect.set(ptsRot, 2);
startRect.outset(strokeAdj, halfSrcStroke);
hasStartRect = true;
hasEndRect = false;
lineDone = true;
SkPoint devicePts[2];
vm.mapPoints(devicePts, ptsRot, 2);
SkScalar lineLength = SkPoint::Distance(devicePts[0], devicePts[1]);
if (hasCap) {
lineLength += 2.f * halfDevStroke;
}
devIntervals[0] = lineLength;
}
if (devIntervals[1] > 0.f || useAA) {
SkPathEffect::DashInfo devInfo;
devInfo.fPhase = devPhase;
devInfo.fCount = 2;
devInfo.fIntervals = devIntervals;
GrEffectEdgeType edgeType= useAA ? kFillAA_GrEffectEdgeType :
kFillBW_GrEffectEdgeType;
drawState->addCoverageEffect(
GrDashingEffect::Create(edgeType, devInfo, strokeWidth), 1)->unref();
}
// Set up the vertex data for the line and start/end dashes
drawState->setVertexAttribs<gDashLineVertexAttribs>(SK_ARRAY_COUNT(gDashLineVertexAttribs));
int totalRectCnt = 0;
totalRectCnt += !lineDone ? 1 : 0;
totalRectCnt += hasStartRect ? 1 : 0;
totalRectCnt += hasEndRect ? 1 : 0;
GrDrawTarget::AutoReleaseGeometry geo(target, totalRectCnt * 4, 0);
if (!geo.succeeded()) {
GrPrintf("Failed to get space for vertices!\n");
return false;
}
DashLineVertex* verts = reinterpret_cast<DashLineVertex*>(geo.vertices());
int curVIdx = 0;
// Draw interior part of dashed line
if (!lineDone) {
SkPoint devicePts[2];
vm.mapPoints(devicePts, ptsRot, 2);
SkScalar lineLength = SkPoint::Distance(devicePts[0], devicePts[1]);
if (hasCap) {
lineLength += 2.f * halfDevStroke;
}
SkRect bounds;
bounds.set(ptsRot[0].fX, ptsRot[0].fY, ptsRot[1].fX, ptsRot[1].fY);
bounds.outset(bloatX + strokeAdj, bloatY + halfSrcStroke);
setup_dashed_rect(bounds, verts, curVIdx, combinedMatrix, startOffset, devBloat,
lineLength, halfDevStroke);
curVIdx += 4;
}
if (hasStartRect) {
SkASSERT(useAA); // so that we know bloatX and bloatY have been set
startRect.outset(bloatX, bloatY);
setup_dashed_rect(startRect, verts, curVIdx, combinedMatrix, startOffset, devBloat,
devIntervals[0], halfDevStroke);
curVIdx += 4;
}
if (hasEndRect) {
SkASSERT(useAA); // so that we know bloatX and bloatY have been set
endRect.outset(bloatX, bloatY);
setup_dashed_rect(endRect, verts, curVIdx, combinedMatrix, startOffset, devBloat,
devIntervals[0], halfDevStroke);
}
target->setIndexSourceToBuffer(gpu->getContext()->getQuadIndexBuffer());
target->drawIndexedInstances(kTriangles_GrPrimitiveType, totalRectCnt, 4, 6);
target->resetIndexSource();
return true;
}
