void GrContext::drawFontCache(const SkRect& rect, GrMaskFormat format, const SkPaint& paint,
GrRenderTarget* target) {
GrBatchFontCache* cache = this->getBatchFontCache();
GrTexture* atlas = cache->getTexture(format);
SkAutoTUnref<GrDrawContext> drawContext(this->drawContext(target));
// TODO: add drawContext method to encapsulate this.
GrPaint grPaint;
SkMatrix mat;
mat.reset();
if (!SkPaintToGrPaint(this, paint, mat, &grPaint)) {
return;
}
SkMatrix textureMat;
textureMat.reset();
// TODO: use setScaleTranslate()
textureMat[SkMatrix::kMScaleX] = 1.0f/rect.width();
textureMat[SkMatrix::kMScaleY] = 1.0f/rect.height();
textureMat[SkMatrix::kMTransX] = -rect.fLeft/rect.width();
textureMat[SkMatrix::kMTransY] = -rect.fTop/rect.height();
grPaint.addColorTextureProcessor(atlas, textureMat);
GrClip clip;
drawContext->drawRect(clip, grPaint, mat, rect);
}
sk_sp<SkImage> SkImage_Gpu::onMakeColorSpace(sk_sp<SkColorSpace> colorSpace) const {
sk_sp<SkColorSpace> srcSpace = fColorSpace ? fColorSpace : SkColorSpace::MakeSRGB();
auto xform = GrNonlinearColorSpaceXformEffect::Make(srcSpace.get(), colorSpace.get());
if (!xform) {
return sk_ref_sp(const_cast<SkImage_Gpu*>(this));
}
sk_sp<GrRenderTargetContext> renderTargetContext(fContext->makeRenderTargetContext(
SkBackingFit::kExact, this->width(), this->height(), kRGBA_8888_GrPixelConfig, nullptr));
if (!renderTargetContext) {
return nullptr;
}
GrPaint paint;
paint.setPorterDuffXPFactory(SkBlendMode::kSrc);
paint.addColorTextureProcessor(fContext->resourceProvider(), fProxy, nullptr, SkMatrix::I());
paint.addColorFragmentProcessor(std::move(xform));
const SkRect rect = SkRect::MakeIWH(this->width(), this->height());
renderTargetContext->drawRect(GrNoClip(), std::move(paint), GrAA::kNo, SkMatrix::I(), rect);
if (!renderTargetContext->asTextureProxy()) {
return nullptr;
}
// MDB: this call is okay bc we know 'renderTargetContext' was exact
return sk_make_sp<SkImage_Gpu>(fContext, kNeedNewImageUniqueID,
fAlphaType, renderTargetContext->asTextureProxyRef(),
std::move(colorSpace), fBudgeted);
}
bool SkXfermodeImageFilter::filterImageGPU(Proxy* proxy,
const SkBitmap& src,
const Context& ctx,
SkBitmap* result,
SkIPoint* offset) const {
SkBitmap background = src;
SkIPoint backgroundOffset = SkIPoint::Make(0, 0);
if (getInput(0) && !getInput(0)->getInputResultGPU(proxy, src, ctx, &background,
&backgroundOffset)) {
return onFilterImage(proxy, src, ctx, result, offset);
}
GrTexture* backgroundTex = background.getTexture();
SkBitmap foreground = src;
SkIPoint foregroundOffset = SkIPoint::Make(0, 0);
if (getInput(1) && !getInput(1)->getInputResultGPU(proxy, src, ctx, &foreground,
&foregroundOffset)) {
return onFilterImage(proxy, src, ctx, result, offset);
}
GrTexture* foregroundTex = foreground.getTexture();
GrContext* context = foregroundTex->getContext();
GrFragmentProcessor* xferProcessor = NULL;
GrSurfaceDesc desc;
desc.fFlags = kRenderTarget_GrSurfaceFlag | kNoStencil_GrSurfaceFlag;
desc.fWidth = src.width();
desc.fHeight = src.height();
desc.fConfig = kSkia8888_GrPixelConfig;
SkAutoTUnref<GrTexture> dst(
context->refScratchTexture(desc, GrContext::kApprox_ScratchTexMatch));
if (!dst) {
return false;
}
GrContext::AutoRenderTarget art(context, dst->asRenderTarget());
if (!fMode || !fMode->asFragmentProcessor(&xferProcessor, backgroundTex)) {
// canFilterImageGPU() should've taken care of this
SkASSERT(false);
return false;
}
SkMatrix foregroundMatrix = GrCoordTransform::MakeDivByTextureWHMatrix(foregroundTex);
foregroundMatrix.preTranslate(SkIntToScalar(backgroundOffset.fX-foregroundOffset.fX),
SkIntToScalar(backgroundOffset.fY-foregroundOffset.fY));
SkRect srcRect;
src.getBounds(&srcRect);
GrPaint paint;
paint.addColorTextureProcessor(foregroundTex, foregroundMatrix);
paint.addColorProcessor(xferProcessor)->unref();
context->drawRect(paint, srcRect);
offset->fX = backgroundOffset.fX;
offset->fY = backgroundOffset.fY;
WrapTexture(dst, src.width(), src.height(), result);
return true;
}
sk_sp<GrTextureProxy> GrTextureProducer::CopyOnGpu(GrContext* context,
sk_sp<GrTextureProxy> inputProxy,
const CopyParams& copyParams,
bool dstWillRequireMipMaps) {
SkASSERT(context);
const SkRect dstRect = SkRect::MakeIWH(copyParams.fWidth, copyParams.fHeight);
GrMipMapped mipMapped = dstWillRequireMipMaps ? GrMipMapped::kYes : GrMipMapped::kNo;
SkRect localRect = SkRect::MakeWH(inputProxy->width(), inputProxy->height());
bool needsDomain = false;
bool resizing = false;
if (copyParams.fFilter != GrSamplerState::Filter::kNearest) {
bool resizing = localRect.width() != dstRect.width() ||
localRect.height() != dstRect.height();
needsDomain = resizing && !GrProxyProvider::IsFunctionallyExact(inputProxy.get());
}
if (copyParams.fFilter == GrSamplerState::Filter::kNearest && !needsDomain && !resizing &&
dstWillRequireMipMaps) {
sk_sp<GrTextureProxy> proxy = GrCopyBaseMipMapToTextureProxy(context, inputProxy.get());
if (proxy) {
return proxy;
}
}
sk_sp<GrRenderTargetContext> copyRTC =
context->contextPriv().makeDeferredRenderTargetContextWithFallback(
SkBackingFit::kExact, dstRect.width(), dstRect.height(), inputProxy->config(),
nullptr, 1, mipMapped, inputProxy->origin());
if (!copyRTC) {
return nullptr;
}
GrPaint paint;
if (needsDomain) {
const SkRect domain = localRect.makeInset(0.5f, 0.5f);
// This would cause us to read values from outside the subset. Surely, the caller knows
// better!
SkASSERT(copyParams.fFilter != GrSamplerState::Filter::kMipMap);
paint.addColorFragmentProcessor(
GrTextureDomainEffect::Make(std::move(inputProxy), SkMatrix::I(), domain,
GrTextureDomain::kClamp_Mode, copyParams.fFilter));
} else {
GrSamplerState samplerState(GrSamplerState::WrapMode::kClamp, copyParams.fFilter);
paint.addColorTextureProcessor(std::move(inputProxy), SkMatrix::I(), samplerState);
}
paint.setPorterDuffXPFactory(SkBlendMode::kSrc);
copyRTC->fillRectToRect(GrNoClip(), std::move(paint), GrAA::kNo, SkMatrix::I(), dstRect,
localRect);
return copyRTC->asTextureProxyRef();
}
void SkGpuDevice::drawTexture(GrTexture* tex, const SkRect& dst, const SkPaint& paint) {
GrPaint grPaint;
SkMatrix mat;
mat.reset();
if (!SkPaintToGrPaint(this->context(), paint, mat,
this->surfaceProps().isGammaCorrect(), &grPaint)) {
return;
}
SkMatrix textureMat;
textureMat.reset();
textureMat[SkMatrix::kMScaleX] = 1.0f/dst.width();
textureMat[SkMatrix::kMScaleY] = 1.0f/dst.height();
textureMat[SkMatrix::kMTransX] = -dst.fLeft/dst.width();
textureMat[SkMatrix::kMTransY] = -dst.fTop/dst.height();
grPaint.addColorTextureProcessor(tex, textureMat);
fDrawContext->drawRect(GrNoClip(), grPaint, mat, dst);
}
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->caps()->maxTextureSize();
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(
paint.getProcessorDataManager(),
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);
}
static GrTexture* copy_on_gpu(GrTexture* inputTexture, const SkIRect* subset,
const CopyParams& copyParams) {
SkASSERT(!subset || !subset->isEmpty());
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 = copyParams.fWidth;
rtDesc.fHeight = copyParams.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;
}
}
SkAutoTUnref<GrTexture> copy(context->textureProvider()->createTexture(rtDesc,
SkBudgeted::kYes));
if (!copy) {
return nullptr;
}
// TODO: If no scaling is being performed then use copySurface.
GrPaint paint;
paint.setGammaCorrect(true);
// TODO: Initializing these values for no reason cause the compiler is complaining
SkScalar sx = 0.f;
SkScalar sy = 0.f;
if (subset) {
sx = 1.f / inputTexture->width();
sy = 1.f / inputTexture->height();
}
if (copyParams.fFilter != GrTextureParams::kNone_FilterMode && subset &&
(subset->width() != copyParams.fWidth || subset->height() != copyParams.fHeight)) {
SkRect domain;
domain.fLeft = (subset->fLeft + 0.5f) * sx;
domain.fTop = (subset->fTop + 0.5f)* sy;
domain.fRight = (subset->fRight - 0.5f) * sx;
domain.fBottom = (subset->fBottom - 0.5f) * sy;
// This would cause us to read values from outside the subset. Surely, the caller knows
// better!
SkASSERT(copyParams.fFilter != GrTextureParams::kMipMap_FilterMode);
paint.addColorFragmentProcessor(
GrTextureDomainEffect::Make(inputTexture, SkMatrix::I(), domain,
GrTextureDomain::kClamp_Mode,
copyParams.fFilter));
} else {
GrTextureParams params(SkShader::kClamp_TileMode, copyParams.fFilter);
paint.addColorTextureProcessor(inputTexture, SkMatrix::I(), params);
}
paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
SkRect localRect;
if (subset) {
localRect = SkRect::Make(*subset);
localRect.fLeft *= sx;
localRect.fTop *= sy;
localRect.fRight *= sx;
localRect.fBottom *= sy;
} else {
localRect = SkRect::MakeWH(1.f, 1.f);
}
sk_sp<GrDrawContext> drawContext(context->drawContext(sk_ref_sp(copy->asRenderTarget())));
if (!drawContext) {
return nullptr;
}
SkRect dstRect = SkRect::MakeWH(SkIntToScalar(rtDesc.fWidth), SkIntToScalar(rtDesc.fHeight));
drawContext->fillRectToRect(GrNoClip(), paint, SkMatrix::I(), dstRect, localRect);
return copy.release();
}
// 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 SkGrStretch& stretch,
SkPixelRef* pixelRef,
const GrUniqueKey& optionalKey) {
SkASSERT(SkGrStretch::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;
}
}
SkAutoTUnref<GrTexture> stretched(GrCreateTextureForPixels(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,
SkGrStretch::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);
SkAutoTUnref<GrDrawContext> drawContext(context->drawContext());
if (!drawContext) {
return nullptr;
}
drawContext->drawNonAARectToRect(stretched->asRenderTarget(), GrClip::WideOpen(), paint,
SkMatrix::I(), rect, localRect);
return stretched.detach();
}
DEF_GPUTEST_FOR_GL_RENDERING_CONTEXTS(SRGBMipMaps, reporter, ctxInfo) {
GrContext* context = ctxInfo.grContext();
if (!context->caps()->srgbSupport()) {
return;
}
const int rtS = 16;
const int texS = rtS * 2;
// Fill texture with a dither of black and 60% sRGB (~ 32.5% linear) gray. Although there is
// only one likely failure mode (doing a direct downsample of the sRGB values), this pattern
// maximizes the minimum error across all three conceivable failure modes:
// 1) Likely incorrect:
// (A + B) / 2
// 2) No input decode, decode output:
// linear_to_srgb((A + B) / 2)
// 3) Decode input, no output encode:
// (srgb_to_linear(A) + srgb_to_linear(B)) / 2
const U8CPU srgb60 = sk_float_round2int(0.6f * 255.0f);
static const SkPMColor colors[2] = {
SkPackARGB32(0xFF, srgb60, srgb60, srgb60),
SkPackARGB32(0xFF, 0x00, 0x00, 0x00)
};
uint32_t texData[texS * texS];
for (int y = 0; y < texS; ++y) {
for (int x = 0; x < texS; ++x) {
texData[y * texS + x] = colors[(x + y) % 2];
}
}
// We can be pretty generous with the error detection, thanks to the choice of input.
// The closest likely failure mode is off by > 0.1, so anything that encodes within
// 10/255 of optimal is more than good enough for this test.
const U8CPU expectedSRGB = sk_float_round2int(
linear_to_srgb(srgb_to_linear(srgb60 / 255.0f) / 2.0f) * 255.0f);
const U8CPU expectedLinear = srgb60 / 2;
const U8CPU error = 10;
// Create our test texture
GrSurfaceDesc desc;
desc.fFlags = kNone_GrSurfaceFlags;
desc.fConfig = kSRGBA_8888_GrPixelConfig;
desc.fWidth = texS;
desc.fHeight = texS;
GrTextureProvider* texProvider = context->textureProvider();
SkAutoTUnref<GrTexture> texture(texProvider->createTexture(desc, SkBudgeted::kNo, texData, 0));
// Create two render target contexts (L32 and S32)
sk_sp<SkColorSpace> srgbColorSpace = SkColorSpace::MakeNamed(SkColorSpace::kSRGB_Named);
sk_sp<GrRenderTargetContext> l32RenderTargetContext = context->makeRenderTargetContext(
SkBackingFit::kExact, rtS, rtS, kRGBA_8888_GrPixelConfig, nullptr);
sk_sp<GrRenderTargetContext> s32RenderTargetContext = context->makeRenderTargetContext(
SkBackingFit::kExact, rtS, rtS, kSRGBA_8888_GrPixelConfig, std::move(srgbColorSpace));
SkRect rect = SkRect::MakeWH(SkIntToScalar(rtS), SkIntToScalar(rtS));
GrNoClip noClip;
GrPaint paint;
paint.setPorterDuffXPFactory(SkBlendMode::kSrc);
GrTextureParams mipMapParams(SkShader::kRepeat_TileMode, GrTextureParams::kMipMap_FilterMode);
paint.addColorTextureProcessor(texture, nullptr, SkMatrix::MakeScale(0.5f), mipMapParams);
// 1) Draw texture to S32 surface (should generate/use sRGB mips)
paint.setGammaCorrect(true);
s32RenderTargetContext->drawRect(noClip, paint, SkMatrix::I(), rect);
read_and_check_pixels(reporter, s32RenderTargetContext->asTexture().get(), expectedSRGB, error,
"first render of sRGB");
// 2) Draw texture to L32 surface (should generate/use linear mips)
paint.setGammaCorrect(false);
l32RenderTargetContext->drawRect(noClip, paint, SkMatrix::I(), rect);
read_and_check_pixels(reporter, l32RenderTargetContext->asTexture().get(), expectedLinear,
error, "re-render as linear");
// 3) Go back to sRGB
paint.setGammaCorrect(true);
s32RenderTargetContext->drawRect(noClip, paint, SkMatrix::I(), rect);
read_and_check_pixels(reporter, s32RenderTargetContext->asTexture().get(), expectedSRGB, error,
"re-render as sRGB");
}
static GrTexture* copy_on_gpu(GrTexture* inputTexture, const SkIRect* subset,
const CopyParams& copyParams) {
SkASSERT(!subset || !subset->isEmpty());
GrContext* context = inputTexture->getContext();
SkASSERT(context);
GrPixelConfig config = GrMakePixelConfigUncompressed(inputTexture->config());
sk_sp<GrDrawContext> copyDC = context->makeDrawContextWithFallback(SkBackingFit::kExact,
copyParams.fWidth,
copyParams.fHeight,
config, nullptr);
if (!copyDC) {
return nullptr;
}
GrPaint paint;
paint.setGammaCorrect(true);
SkScalar sx SK_INIT_TO_AVOID_WARNING;
SkScalar sy SK_INIT_TO_AVOID_WARNING;
if (subset) {
sx = 1.f / inputTexture->width();
sy = 1.f / inputTexture->height();
}
if (copyParams.fFilter != GrTextureParams::kNone_FilterMode && subset &&
(subset->width() != copyParams.fWidth || subset->height() != copyParams.fHeight)) {
SkRect domain;
domain.fLeft = (subset->fLeft + 0.5f) * sx;
domain.fTop = (subset->fTop + 0.5f)* sy;
domain.fRight = (subset->fRight - 0.5f) * sx;
domain.fBottom = (subset->fBottom - 0.5f) * sy;
// This would cause us to read values from outside the subset. Surely, the caller knows
// better!
SkASSERT(copyParams.fFilter != GrTextureParams::kMipMap_FilterMode);
paint.addColorFragmentProcessor(
GrTextureDomainEffect::Make(inputTexture, nullptr, SkMatrix::I(), domain,
GrTextureDomain::kClamp_Mode,
copyParams.fFilter));
} else {
GrTextureParams params(SkShader::kClamp_TileMode, copyParams.fFilter);
paint.addColorTextureProcessor(inputTexture, nullptr, SkMatrix::I(), params);
}
paint.setPorterDuffXPFactory(SkBlendMode::kSrc);
SkRect localRect;
if (subset) {
localRect = SkRect::Make(*subset);
localRect.fLeft *= sx;
localRect.fTop *= sy;
localRect.fRight *= sx;
localRect.fBottom *= sy;
} else {
localRect = SkRect::MakeWH(1.f, 1.f);
}
SkRect dstRect = SkRect::MakeIWH(copyParams.fWidth, copyParams.fHeight);
copyDC->fillRectToRect(GrNoClip(), paint, SkMatrix::I(), dstRect, localRect);
return copyDC->asTexture().release();
}
sk_sp<GrDrawContext> GaussianBlur(GrContext* context,
GrTexture* origSrc,
sk_sp<SkColorSpace> colorSpace,
const SkIRect& dstBounds,
const SkIRect* srcBounds,
float sigmaX,
float sigmaY,
SkBackingFit fit) {
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);
SkASSERT(sigmaX || sigmaY);
SkIPoint srcOffset = SkIPoint::Make(-dstBounds.x(), -dstBounds.y());
SkIRect localDstBounds = SkIRect::MakeWH(dstBounds.width(), dstBounds.height());
SkIRect localSrcBounds;
SkIRect srcRect;
if (srcBounds) {
srcRect = localSrcBounds = *srcBounds;
srcRect.offset(srcOffset);
srcBounds = &localSrcBounds;
} else {
srcRect = localDstBounds;
}
scale_irect_roundout(&srcRect, 1.0f / scaleFactorX, 1.0f / scaleFactorY);
scale_irect(&srcRect, scaleFactorX, scaleFactorY);
// setup new clip
GrFixedClip clip(localDstBounds);
sk_sp<GrTexture> srcTexture(sk_ref_sp(origSrc));
SkASSERT(kBGRA_8888_GrPixelConfig == srcTexture->config() ||
kRGBA_8888_GrPixelConfig == srcTexture->config() ||
kSRGBA_8888_GrPixelConfig == srcTexture->config() ||
kSBGRA_8888_GrPixelConfig == srcTexture->config() ||
kRGBA_half_GrPixelConfig == srcTexture->config() ||
kAlpha_8_GrPixelConfig == srcTexture->config());
const int width = dstBounds.width();
const int height = dstBounds.height();
const GrPixelConfig config = srcTexture->config();
sk_sp<GrDrawContext> dstDrawContext(context->makeDrawContext(fit,
width, height, config, colorSpace,
0, kDefault_GrSurfaceOrigin));
if (!dstDrawContext) {
return nullptr;
}
// 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));
convolve_gaussian_2d(dstDrawContext.get(), clip, localDstBounds, srcOffset,
srcTexture.get(), radiusX, radiusY, sigmaX, sigmaY, srcBounds);
return dstDrawContext;
}
sk_sp<GrDrawContext> tmpDrawContext(context->makeDrawContext(fit,
width, height, config, colorSpace,
0, kDefault_GrSurfaceOrigin));
if (!tmpDrawContext) {
return nullptr;
}
sk_sp<GrDrawContext> srcDrawContext;
SkASSERT(SkIsPow2(scaleFactorX) && SkIsPow2(scaleFactorY));
for (int i = 1; i < scaleFactorX || i < scaleFactorY; i *= 2) {
GrPaint paint;
paint.setGammaCorrect(dstDrawContext->isGammaCorrect());
SkMatrix matrix;
matrix.setIDiv(srcTexture->width(), srcTexture->height());
SkIRect dstRect(srcRect);
if (srcBounds && i == 1) {
SkRect domain;
matrix.mapRect(&domain, SkRect::Make(*srcBounds));
domain.inset((i < scaleFactorX) ? SK_ScalarHalf / srcTexture->width() : 0.0f,
(i < scaleFactorY) ? SK_ScalarHalf / srcTexture->height() : 0.0f);
sk_sp<GrFragmentProcessor> fp(GrTextureDomainEffect::Make(
srcTexture.get(),
nullptr,
matrix,
domain,
GrTextureDomain::kDecal_Mode,
GrTextureParams::kBilerp_FilterMode));
paint.addColorFragmentProcessor(std::move(fp));
srcRect.offset(-srcOffset);
srcOffset.set(0, 0);
} else {
GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
paint.addColorTextureProcessor(srcTexture.get(), nullptr, matrix, params);
}
paint.setPorterDuffXPFactory(SkBlendMode::kSrc);
shrink_irect_by_2(&dstRect, i < scaleFactorX, i < scaleFactorY);
dstDrawContext->fillRectToRect(clip, paint, SkMatrix::I(),
SkRect::Make(dstRect), SkRect::Make(srcRect));
srcDrawContext = dstDrawContext;
srcRect = dstRect;
srcTexture = srcDrawContext->asTexture();
dstDrawContext.swap(tmpDrawContext);
localSrcBounds = srcRect;
}
srcRect = localDstBounds;
scale_irect_roundout(&srcRect, 1.0f / scaleFactorX, 1.0f / scaleFactorY);
if (sigmaX > 0.0f) {
if (scaleFactorX > 1) {
SkASSERT(srcDrawContext);
// Clear out a radius to the right of the srcRect to prevent the
// X convolution from reading garbage.
clearRect = SkIRect::MakeXYWH(srcRect.fRight, srcRect.fTop,
radiusX, srcRect.height());
srcDrawContext->clear(&clearRect, 0x0, false);
}
convolve_gaussian(dstDrawContext.get(), clip, srcRect,
srcTexture.get(), Gr1DKernelEffect::kX_Direction, radiusX, sigmaX,
srcBounds, srcOffset);
srcDrawContext = dstDrawContext;
srcTexture = srcDrawContext->asTexture();
srcRect.offsetTo(0, 0);
dstDrawContext.swap(tmpDrawContext);
localSrcBounds = srcRect;
srcOffset.set(0, 0);
}
if (sigmaY > 0.0f) {
if (scaleFactorY > 1 || sigmaX > 0.0f) {
SkASSERT(srcDrawContext);
// Clear out a radius below the srcRect to prevent the Y
// convolution from reading garbage.
clearRect = SkIRect::MakeXYWH(srcRect.fLeft, srcRect.fBottom,
srcRect.width(), radiusY);
srcDrawContext->clear(&clearRect, 0x0, false);
}
convolve_gaussian(dstDrawContext.get(), clip, srcRect,
srcTexture.get(), Gr1DKernelEffect::kY_Direction, radiusY, sigmaY,
srcBounds, srcOffset);
srcDrawContext = dstDrawContext;
srcRect.offsetTo(0, 0);
dstDrawContext.swap(tmpDrawContext);
}
SkASSERT(srcDrawContext);
srcTexture = nullptr; // we don't use this from here on out
if (scaleFactorX > 1 || scaleFactorY > 1) {
// Clear one pixel to the right and below, to accommodate bilinear upsampling.
clearRect = SkIRect::MakeXYWH(srcRect.fLeft, srcRect.fBottom, srcRect.width() + 1, 1);
srcDrawContext->clear(&clearRect, 0x0, false);
clearRect = SkIRect::MakeXYWH(srcRect.fRight, srcRect.fTop, 1, srcRect.height());
srcDrawContext->clear(&clearRect, 0x0, false);
SkMatrix matrix;
matrix.setIDiv(srcDrawContext->width(), srcDrawContext->height());
GrPaint paint;
paint.setGammaCorrect(dstDrawContext->isGammaCorrect());
// FIXME: this should be mitchell, not bilinear.
GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
sk_sp<GrTexture> tex(srcDrawContext->asTexture());
paint.addColorTextureProcessor(tex.get(), nullptr, matrix, params);
paint.setPorterDuffXPFactory(SkBlendMode::kSrc);
SkIRect dstRect(srcRect);
scale_irect(&dstRect, scaleFactorX, scaleFactorY);
dstDrawContext->fillRectToRect(clip, paint, SkMatrix::I(),
SkRect::Make(dstRect), SkRect::Make(srcRect));
srcDrawContext = dstDrawContext;
srcRect = dstRect;
dstDrawContext.swap(tmpDrawContext);
}
return srcDrawContext;
}
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
srcRect = localDstBounds;
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, srcOffset,
srcTexture, radiusX, radiusY, sigmaX, sigmaY, srcBounds);
srcDrawContext.swap(dstDrawContext);
srcRect.offsetTo(0, 0);
srcTexture = dstTexture;
SkTSwap(dstTexture, tempTexture);
} else {
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);
}
