inline void GrDistanceFieldTextContext::init(GrRenderTarget* rt, const GrClip& clip,
const GrPaint& paint, const SkPaint& skPaint,
const SkIRect& regionClipBounds) {
GrTextContext::init(rt, clip, paint, skPaint, regionClipBounds);
fStrike = NULL;
const SkMatrix& ctm = fViewMatrix;
// getMaxScale doesn't support perspective, so neither do we at the moment
SkASSERT(!ctm.hasPerspective());
SkScalar maxScale = ctm.getMaxScale();
SkScalar textSize = fSkPaint.getTextSize();
SkScalar scaledTextSize = textSize;
// if we have non-unity scale, we need to choose our base text size
// based on the SkPaint's text size multiplied by the max scale factor
// TODO: do we need to do this if we're scaling down (i.e. maxScale < 1)?
if (maxScale > 0 && !SkScalarNearlyEqual(maxScale, SK_Scalar1)) {
scaledTextSize *= maxScale;
}
fVertices = NULL;
fCurrVertex = 0;
fAllocVertexCount = 0;
fTotalVertexCount = 0;
if (scaledTextSize <= kSmallDFFontLimit) {
fTextRatio = textSize / kSmallDFFontSize;
fSkPaint.setTextSize(SkIntToScalar(kSmallDFFontSize));
#if DEBUG_TEXT_SIZE
fSkPaint.setColor(SkColorSetARGB(0xFF, 0x00, 0x00, 0x7F));
fPaint.setColor(GrColorPackRGBA(0x00, 0x00, 0x7F, 0xFF));
#endif
} else if (scaledTextSize <= kMediumDFFontLimit) {
fTextRatio = textSize / kMediumDFFontSize;
fSkPaint.setTextSize(SkIntToScalar(kMediumDFFontSize));
#if DEBUG_TEXT_SIZE
fSkPaint.setColor(SkColorSetARGB(0xFF, 0x00, 0x3F, 0x00));
fPaint.setColor(GrColorPackRGBA(0x00, 0x3F, 0x00, 0xFF));
#endif
} else {
fTextRatio = textSize / kLargeDFFontSize;
fSkPaint.setTextSize(SkIntToScalar(kLargeDFFontSize));
#if DEBUG_TEXT_SIZE
fSkPaint.setColor(SkColorSetARGB(0xFF, 0x7F, 0x00, 0x00));
fPaint.setColor(GrColorPackRGBA(0x7F, 0x00, 0x00, 0xFF));
#endif
}
fUseLCDText = fSkPaint.isLCDRenderText();
fSkPaint.setLCDRenderText(false);
fSkPaint.setAutohinted(false);
fSkPaint.setHinting(SkPaint::kNormal_Hinting);
fSkPaint.setSubpixelText(true);
}
static void test_clear(skiatest::Reporter* reporter, GrContext* context,
GrTexture* rectangleTexture) {
if (rectangleTexture->asRenderTarget()) {
sk_sp<GrDrawContext> dc(
context->drawContext(sk_ref_sp(rectangleTexture->asRenderTarget()),
nullptr));
if (!dc) {
ERRORF(reporter, "Could not get GrDrawContext for rectangle texture.");
return;
}
// Clear the whole thing.
GrColor color0 = GrColorPackRGBA(0xA, 0xB, 0xC, 0xD);
dc->clear(nullptr, color0, false);
int w = rectangleTexture->width();
int h = rectangleTexture->height();
int pixelCnt = w * h;
SkAutoTMalloc<uint32_t> expectedPixels(pixelCnt);
// The clear color is a GrColor, our readback is to kRGBA_8888, which may be different.
uint32_t expectedColor0 = 0;
uint8_t* expectedBytes0 = SkTCast<uint8_t*>(&expectedColor0);
expectedBytes0[0] = GrColorUnpackR(color0);
expectedBytes0[1] = GrColorUnpackG(color0);
expectedBytes0[2] = GrColorUnpackB(color0);
expectedBytes0[3] = GrColorUnpackA(color0);
for (int i = 0; i < rectangleTexture->width() * rectangleTexture->height(); ++i) {
expectedPixels.get()[i] = expectedColor0;
}
// Clear the the top to a different color.
GrColor color1 = GrColorPackRGBA(0x1, 0x2, 0x3, 0x4);
SkIRect rect = SkIRect::MakeWH(w, h/2);
dc->clear(&rect, color1, false);
uint32_t expectedColor1 = 0;
uint8_t* expectedBytes1 = SkTCast<uint8_t*>(&expectedColor1);
expectedBytes1[0] = GrColorUnpackR(color1);
expectedBytes1[1] = GrColorUnpackG(color1);
expectedBytes1[2] = GrColorUnpackB(color1);
expectedBytes1[3] = GrColorUnpackA(color1);
for (int y = 0; y < h/2; ++y) {
for (int x = 0; x < w; ++x) {
expectedPixels.get()[y * h + x] = expectedColor1;
}
}
test_read_pixels(reporter, context, rectangleTexture, expectedPixels.get());
}
}
void test_write_pixels(skiatest::Reporter* reporter,
GrSurfaceContext* dstContext, bool expectedToWork,
const char* testName) {
int pixelCnt = dstContext->width() * dstContext->height();
SkAutoTMalloc<uint32_t> pixels(pixelCnt);
for (int y = 0; y < dstContext->width(); ++y) {
for (int x = 0; x < dstContext->height(); ++x) {
pixels.get()[y * dstContext->width() + x] =
GrPremulColor(GrColorPackRGBA(x, y, x + y, 2*y));
}
}
SkImageInfo ii = SkImageInfo::Make(dstContext->width(), dstContext->height(),
kRGBA_8888_SkColorType, kPremul_SkAlphaType);
bool write = dstContext->writePixels(ii, pixels.get(), 0, 0, 0);
if (!write) {
if (expectedToWork) {
ERRORF(reporter, "%s: Error writing to texture.", testName);
}
return;
}
if (write && !expectedToWork) {
ERRORF(reporter, "%s: writePixels succeeded when it wasn't supposed to.", testName);
return;
}
test_read_pixels(reporter, dstContext, pixels.get(), testName);
}
bool does_full_buffer_contain_correct_color(GrColor* buffer,
GrColor clearColor,
GrPixelConfig config,
int width,
int height) {
GrColor matchColor;
if (kRGBA_8888_GrPixelConfig == config) {
matchColor = clearColor;
} else if (kBGRA_8888_GrPixelConfig) {
// Hack to flip the R, B componets in the GrColor so that the comparrison will work below
matchColor = GrColorPackRGBA(GrColorUnpackB(clearColor),
GrColorUnpackG(clearColor),
GrColorUnpackR(clearColor),
GrColorUnpackA(clearColor));
} else {
// currently only supporting rgba_8888 and bgra_8888
return false;
}
for (int j = 0; j < height; ++j) {
for (int i = 0; i < width; ++i) {
if (buffer[j * width + i] != matchColor) {
return false;
}
}
}
return true;
}
void test_copy_to_surface(skiatest::Reporter* reporter, GrProxyProvider* proxyProvider,
GrSurfaceContext* dstContext, const char* testName) {
int pixelCnt = dstContext->width() * dstContext->height();
SkAutoTMalloc<uint32_t> pixels(pixelCnt);
for (int y = 0; y < dstContext->width(); ++y) {
for (int x = 0; x < dstContext->height(); ++x) {
pixels.get()[y * dstContext->width() + x] =
GrPremulColor(GrColorPackRGBA(y, x, x * y, 2*y));
}
}
GrSurfaceDesc copySrcDesc;
copySrcDesc.fWidth = dstContext->width();
copySrcDesc.fHeight = dstContext->height();
copySrcDesc.fConfig = kRGBA_8888_GrPixelConfig;
for (auto flags : { kNone_GrSurfaceFlags, kRenderTarget_GrSurfaceFlag }) {
copySrcDesc.fFlags = flags;
copySrcDesc.fOrigin = (kNone_GrSurfaceFlags == flags) ? kTopLeft_GrSurfaceOrigin
: kBottomLeft_GrSurfaceOrigin;
sk_sp<GrTextureProxy> src = proxyProvider->createTextureProxy(copySrcDesc, SkBudgeted::kYes,
pixels.get(), 0);
dstContext->copy(src.get());
test_read_pixels(reporter, dstContext, pixels.get(), testName);
}
}
static void test_clear(skiatest::Reporter* reporter, GrSurfaceContext* rectContext) {
if (GrRenderTargetContext* rtc = rectContext->asRenderTargetContext()) {
// Clear the whole thing.
GrColor color0 = GrColorPackRGBA(0xA, 0xB, 0xC, 0xD);
rtc->clear(nullptr, color0, GrRenderTargetContext::CanClearFullscreen::kNo);
int w = rtc->width();
int h = rtc->height();
int pixelCnt = w * h;
SkAutoTMalloc<uint32_t> expectedPixels(pixelCnt);
// The clear color is a GrColor, our readback is to kRGBA_8888, which may be different.
uint32_t expectedColor0 = 0;
uint8_t* expectedBytes0 = SkTCast<uint8_t*>(&expectedColor0);
expectedBytes0[0] = GrColorUnpackR(color0);
expectedBytes0[1] = GrColorUnpackG(color0);
expectedBytes0[2] = GrColorUnpackB(color0);
expectedBytes0[3] = GrColorUnpackA(color0);
for (int i = 0; i < rtc->width() * rtc->height(); ++i) {
expectedPixels.get()[i] = expectedColor0;
}
// Clear the the top to a different color.
GrColor color1 = GrColorPackRGBA(0x1, 0x2, 0x3, 0x4);
SkIRect rect = SkIRect::MakeWH(w, h/2);
rtc->clear(&rect, color1, GrRenderTargetContext::CanClearFullscreen::kNo);
uint32_t expectedColor1 = 0;
uint8_t* expectedBytes1 = SkTCast<uint8_t*>(&expectedColor1);
expectedBytes1[0] = GrColorUnpackR(color1);
expectedBytes1[1] = GrColorUnpackG(color1);
expectedBytes1[2] = GrColorUnpackB(color1);
expectedBytes1[3] = GrColorUnpackA(color1);
for (int y = 0; y < h/2; ++y) {
for (int x = 0; x < w; ++x) {
expectedPixels.get()[y * h + x] = expectedColor1;
}
}
test_read_pixels(reporter, rtc, expectedPixels.get(), "RectangleTexture-clear");
}
}
GrXferProcessor::OptFlags
PDLCDXferProcessor::onGetOptimizations(const GrPipelineOptimizations& optimizations,
bool doesStencilWrite,
GrColor* overrideColor,
const GrCaps& caps) const {
// We want to force our primary output to be alpha * Coverage, where alpha is the alpha
// value of the blend the constant. We should already have valid blend coeff's if we are at
// a point where we have RGB coverage. We don't need any color stages since the known color
// output is already baked into the blendConstant.
*overrideColor = GrColorPackRGBA(fAlpha, fAlpha, fAlpha, fAlpha);
return GrXferProcessor::kOverrideColor_OptFlag;
}
const GrFragmentProcessor* ModeColorFilterEffect::TestCreate(GrProcessorTestData* d) {
SkXfermode::Mode mode = SkXfermode::kDst_Mode;
while (SkXfermode::kDst_Mode == mode) {
mode = static_cast<SkXfermode::Mode>(d->fRandom->nextRangeU(0, SkXfermode::kLastCoeffMode));
}
// pick a random premul color
uint8_t alpha = d->fRandom->nextULessThan(256);
GrColor color = GrColorPackRGBA(d->fRandom->nextRangeU(0, alpha),
d->fRandom->nextRangeU(0, alpha),
d->fRandom->nextRangeU(0, alpha),
alpha);
return ModeColorFilterEffect::Create(color, mode);
}
void basic_clear_test(skiatest::Reporter* reporter, GrContext* context, GrPixelConfig config) {
GrVkGpu* gpu = static_cast<GrVkGpu*>(context->getGpu());
gpu->discard(NULL);
SkAutoTMalloc<GrColor> buffer(25);
GrSurfaceDesc surfDesc;
surfDesc.fFlags = kRenderTarget_GrSurfaceFlag;
surfDesc.fOrigin = kTopLeft_GrSurfaceOrigin;
surfDesc.fWidth = 5;
surfDesc.fHeight = 5;
surfDesc.fConfig = config;
surfDesc.fSampleCnt = 0;
GrTexture* tex = gpu->createTexture(surfDesc, false, nullptr, 0);
SkASSERT(tex);
SkASSERT(tex->asRenderTarget());
SkIRect rect = SkIRect::MakeWH(5, 5);
gpu->clear(rect, GrColor_TRANSPARENT_BLACK, tex->asRenderTarget());
gpu->readPixels(tex, 0, 0, 5, 5, config, (void*)buffer.get(), 0);
REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(buffer.get(),
GrColor_TRANSPARENT_BLACK,
config,
5,
5));
gpu->clear(rect, GrColor_WHITE, tex->asRenderTarget());
gpu->readPixels(tex, 0, 0, 5, 5, config, (void*)buffer.get(), 0);
REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(buffer.get(),
GrColor_WHITE,
config,
5,
5));
GrColor myColor = GrColorPackRGBA(0xFF, 0x7F, 0x40, 0x20);
gpu->clear(rect, myColor, tex->asRenderTarget());
gpu->readPixels(tex, 0, 0, 5, 5, config, (void*)buffer.get(), 0);
REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(buffer.get(),
myColor,
config,
5,
5));
}
bool GrAndroidPathRenderer::onDrawPath(const SkPath& origPath,
const SkStrokeRec& stroke,
GrDrawTarget* target,
bool antiAlias) {
// generate verts using Android algorithm
android::uirenderer::VertexBuffer vertices;
android::uirenderer::PathRenderer::ConvexPathVertices(origPath, stroke, antiAlias, NULL,
&vertices);
// set vertex layout depending on anti-alias
GrVertexLayout layout = antiAlias ? GrDrawState::kCoverage_VertexLayoutBit : 0;
// allocate our vert buffer
int vertCount = vertices.getSize();
GrDrawTarget::AutoReleaseGeometry geo(target, layout, vertCount, 0);
if (!geo.succeeded()) {
GrPrintf("Failed to get space for vertices!\n");
return false;
}
// copy android verts to our vertex buffer
if (antiAlias) {
ColorVertex* outVert = reinterpret_cast<ColorVertex*>(geo.vertices());
android::uirenderer::AlphaVertex* inVert =
reinterpret_cast<android::uirenderer::AlphaVertex*>(vertices.getBuffer());
for (int i = 0; i < vertCount; ++i) {
// copy vertex position
outVert->pos.set(inVert->position[0], inVert->position[1]);
// copy alpha
int coverage = static_cast<int>(inVert->alpha * 0xff);
outVert->color = GrColorPackRGBA(coverage, coverage, coverage, coverage);
++outVert;
++inVert;
}
} else {
size_t vsize = GrDrawState::VertexSize(layout);
size_t copySize = vsize*vertCount;
memcpy(geo.vertices(), vertices.getBuffer(), copySize);
}
// render it
target->drawNonIndexed(kTriangleStrip_GrPrimitiveType, 0, vertCount);
return true;
}
static void test_write_pixels(skiatest::Reporter* reporter, GrContext* context,
GrTexture* rectangleTexture) {
int pixelCnt = rectangleTexture->width() * rectangleTexture->height();
SkAutoTMalloc<uint32_t> pixels(pixelCnt);
for (int y = 0; y < rectangleTexture->width(); ++y) {
for (int x = 0; x < rectangleTexture->height(); ++x) {
pixels.get()[y * rectangleTexture->width() + x] = GrColorPackRGBA(x, y, x + y, x * y);
}
}
bool write = rectangleTexture->writePixels(0, 0, rectangleTexture->width(),
rectangleTexture->height(), kRGBA_8888_GrPixelConfig,
pixels.get());
if (!write) {
ERRORF(reporter, "Error writing to rectangle texture.");
}
test_read_pixels(reporter, context, rectangleTexture, pixels.get());
}
GrFragmentProcessor* ModeColorFilterEffect::TestCreate(SkRandom* rand,
GrContext*,
const GrDrawTargetCaps&,
GrTexture*[]) {
SkXfermode::Mode mode = SkXfermode::kDst_Mode;
while (SkXfermode::kDst_Mode == mode) {
mode = static_cast<SkXfermode::Mode>(rand->nextRangeU(0, SkXfermode::kLastCoeffMode));
}
// pick a random premul color
uint8_t alpha = rand->nextULessThan(256);
GrColor color = GrColorPackRGBA(rand->nextRangeU(0, alpha),
rand->nextRangeU(0, alpha),
rand->nextRangeU(0, alpha),
alpha);
return ModeColorFilterEffect::Create(color, mode);
}
/**
* Move the result of the software mask generation back to the gpu
*/
void GrSWMaskHelper::toTexture(GrTexture *texture, uint8_t alpha) {
SkAutoLockPixels alp(fBM);
// The destination texture is almost always larger than "fBM". Clear
// it appropriately so we don't get mask artifacts outside of the path's
// bounding box
// "texture" needs to be installed as the render target for the clear
// and the texture upload but cannot remain the render target upon
// return. Callers typically use it as a texture and it would then
// be both source and dest.
GrDrawState::AutoRenderTargetRestore artr(fContext->getGpu()->drawState(),
texture->asRenderTarget());
fContext->getGpu()->clear(NULL, GrColorPackRGBA(alpha, alpha, alpha, alpha));
texture->writePixels(0, 0, fBM.width(), fBM.height(),
kAlpha_8_GrPixelConfig,
fBM.getPixels(), fBM.rowBytes());
}
static void test_copy_surface_dst(skiatest::Reporter* reporter, GrContext* context,
GrTexture* rectangleTexture) {
int pixelCnt = rectangleTexture->width() * rectangleTexture->height();
SkAutoTMalloc<uint32_t> pixels(pixelCnt);
for (int y = 0; y < rectangleTexture->width(); ++y) {
for (int x = 0; x < rectangleTexture->height(); ++x) {
pixels.get()[y * rectangleTexture->width() + x] = GrColorPackRGBA(y, x, x * y, x *+ y);
}
}
GrSurfaceDesc copySrcDesc;
copySrcDesc.fConfig = kRGBA_8888_GrPixelConfig;
copySrcDesc.fWidth = rectangleTexture->width();
copySrcDesc.fHeight = rectangleTexture->height();
copySrcDesc.fFlags = kRenderTarget_GrSurfaceFlag;
SkAutoTUnref<GrTexture> src(context->textureProvider()->createTexture(
copySrcDesc, SkBudgeted::kYes, pixels.get(), 0));
context->copySurface(rectangleTexture, src);
test_read_pixels(reporter, context, rectangleTexture, pixels.get());
}
bool SkPerlinNoiseShader::asFragmentProcessor(GrContext* context, const SkPaint& paint,
const SkMatrix& viewM,
const SkMatrix* externalLocalMatrix,
GrColor* paintColor, GrFragmentProcessor** fp) const {
SkASSERT(context);
*paintColor = SkColor2GrColorJustAlpha(paint.getColor());
SkMatrix localMatrix = this->getLocalMatrix();
if (externalLocalMatrix) {
localMatrix.preConcat(*externalLocalMatrix);
}
SkMatrix matrix = viewM;
matrix.preConcat(localMatrix);
if (0 == fNumOctaves) {
if (kFractalNoise_Type == fType) {
uint32_t alpha = paint.getAlpha() >> 1;
uint32_t rgb = alpha >> 1;
*paintColor = GrColorPackRGBA(rgb, rgb, rgb, alpha);
} else {
const GrFragmentProcessor* GrConstColorProcessor::TestCreate(GrProcessorTestData* d) {
GrColor color;
int colorPicker = d->fRandom->nextULessThan(3);
switch (colorPicker) {
case 0: {
uint32_t a = d->fRandom->nextULessThan(0x100);
uint32_t r = d->fRandom->nextULessThan(a+1);
uint32_t g = d->fRandom->nextULessThan(a+1);
uint32_t b = d->fRandom->nextULessThan(a+1);
color = GrColorPackRGBA(r, g, b, a);
break;
}
case 1:
color = 0;
break;
case 2:
color = d->fRandom->nextULessThan(0x100);
color = color | (color << 8) | (color << 16) | (color << 24);
break;
}
InputMode mode = static_cast<InputMode>(d->fRandom->nextULessThan(kInputModeCnt));
return GrConstColorProcessor::Create(color, mode);
}
GrXferProcessor::OptFlags
PorterDuffXferProcessor::getOptimizations(const GrProcOptInfo& colorPOI,
const GrProcOptInfo& coveragePOI,
bool doesStencilWrite,
GrColor* overrideColor,
const GrDrawTargetCaps& caps) {
GrXferProcessor::OptFlags optFlags;
// Optimizations when doing RGB Coverage
if (coveragePOI.isFourChannelOutput()) {
// We want to force our primary output to be alpha * Coverage, where alpha is the alpha
// value of the blend the constant. We should already have valid blend coeff's if we are at
// a point where we have RGB coverage. We don't need any color stages since the known color
// output is already baked into the blendConstant.
uint8_t alpha = GrColorUnpackA(fBlendConstant);
*overrideColor = GrColorPackRGBA(alpha, alpha, alpha, alpha);
optFlags = GrXferProcessor::kOverrideColor_OptFlag;
} else {
optFlags = this->internalGetOptimizations(colorPOI,
coveragePOI,
doesStencilWrite);
}
this->calcOutputTypes(optFlags, caps, coveragePOI.isSolidWhite());
return optFlags;
}
void sub_clear_test(skiatest::Reporter* reporter, GrContext* context, GrPixelConfig config) {
const int width = 10;
const int height = 10;
const int subWidth = width/2;
const int subHeight = height/2;
GrVkGpu* gpu = static_cast<GrVkGpu*>(context->getGpu());
gpu->discard(NULL);
SkAutoTMalloc<GrColor> buffer(width * height);
SkAutoTMalloc<GrColor> subBuffer(subWidth * subHeight);
GrSurfaceDesc surfDesc;
surfDesc.fFlags = kRenderTarget_GrSurfaceFlag;
surfDesc.fOrigin = kTopLeft_GrSurfaceOrigin;
surfDesc.fWidth = width;
surfDesc.fHeight = height;
surfDesc.fConfig = config;
surfDesc.fSampleCnt = 0;
GrTexture* tex = gpu->createTexture(surfDesc, false, nullptr, 0);
SkASSERT(tex);
SkASSERT(tex->asRenderTarget());
SkIRect fullRect = SkIRect::MakeWH(10, 10);
gpu->clear(fullRect, GrColor_TRANSPARENT_BLACK, tex->asRenderTarget());
gpu->readPixels(tex, 0, 0, width, height, config, (void*)buffer.get(), 0);
REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(buffer.get(),
GrColor_TRANSPARENT_BLACK,
config,
width,
height));
SkIRect rect;
rect = SkIRect::MakeXYWH(0, 0, subWidth, subHeight);
gpu->clear(rect, GrColor_WHITE, tex->asRenderTarget());
rect = SkIRect::MakeXYWH(subWidth, 0, subWidth, subHeight);
gpu->clear(rect, GrColor_WHITE, tex->asRenderTarget());
rect = SkIRect::MakeXYWH(0, subHeight, subWidth, subHeight);
gpu->clear(rect, GrColor_WHITE, tex->asRenderTarget());
// Should fail since bottom right sub area has not been cleared to white
gpu->readPixels(tex, 0, 0, width, height, config, (void*)buffer.get(), 0);
REPORTER_ASSERT(reporter, !does_full_buffer_contain_correct_color(buffer.get(),
GrColor_WHITE,
config,
width,
height));
rect = SkIRect::MakeXYWH(subWidth, subHeight, subWidth, subHeight);
gpu->clear(rect, GrColor_WHITE, tex->asRenderTarget());
gpu->readPixels(tex, 0, 0, width, height, config, (void*)buffer.get(), 0);
REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(buffer.get(),
GrColor_WHITE,
config,
width,
height));
// Try different colors and that each sub area has correct color
GrColor subColor1 = GrColorPackRGBA(0xFF, 0x00, 0x00, 0xFF);
GrColor subColor2 = GrColorPackRGBA(0x00, 0xFF, 0x00, 0xFF);
GrColor subColor3 = GrColorPackRGBA(0x00, 0x00, 0xFF, 0xFF);
GrColor subColor4 = GrColorPackRGBA(0xFF, 0xFF, 0x00, 0xFF);
rect = SkIRect::MakeXYWH(0, 0, subWidth, subHeight);
gpu->clear(rect, subColor1, tex->asRenderTarget());
rect = SkIRect::MakeXYWH(subWidth, 0, subWidth, subHeight);
gpu->clear(rect, subColor2, tex->asRenderTarget());
rect = SkIRect::MakeXYWH(0, subHeight, subWidth, subHeight);
gpu->clear(rect, subColor3, tex->asRenderTarget());
rect = SkIRect::MakeXYWH(subWidth, subHeight, subWidth, subHeight);
gpu->clear(rect, subColor4, tex->asRenderTarget());
gpu->readPixels(tex, 0, 0, subWidth, subHeight, config, (void*)subBuffer.get(), 0);
REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(subBuffer.get(),
subColor1,
config,
subWidth,
subHeight));
gpu->readPixels(tex, subWidth, 0, subWidth, subHeight, config, (void*)subBuffer.get(), 0);
REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(subBuffer.get(),
subColor2,
config,
subWidth,
subHeight));
gpu->readPixels(tex, 0, subHeight, subWidth, subHeight, config, (void*)subBuffer.get(), 0);
REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(subBuffer.get(),
subColor3,
config,
subWidth,
subHeight));
gpu->readPixels(tex, subWidth, subHeight, subWidth, subHeight,
config, (void*)subBuffer.get(), 0);
REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(subBuffer.get(),
subColor4,
config,
subWidth,
subHeight));
}
bool LightingShader::asFragmentProcessor(GrContext* context, const SkPaint& paint,
const SkMatrix& viewM, const SkMatrix* localMatrix,
GrColor* color, GrProcessorDataManager*,
GrFragmentProcessor** fp) const {
// we assume diffuse and normal maps have same width and height
// TODO: support different sizes
SkASSERT(fDiffuseMap.width() == fNormalMap.width() &&
fDiffuseMap.height() == fNormalMap.height());
SkMatrix matrix;
matrix.setIDiv(fDiffuseMap.width(), fDiffuseMap.height());
SkMatrix lmInverse;
if (!this->getLocalMatrix().invert(&lmInverse)) {
return false;
}
if (localMatrix) {
SkMatrix inv;
if (!localMatrix->invert(&inv)) {
return false;
}
lmInverse.postConcat(inv);
}
matrix.preConcat(lmInverse);
// Must set wrap and filter on the sampler before requesting a texture. In two places below
// we check the matrix scale factors to determine how to interpret the filter quality setting.
// This completely ignores the complexity of the drawVertices case where explicit local coords
// are provided by the caller.
GrTextureParams::FilterMode textureFilterMode = GrTextureParams::kBilerp_FilterMode;
switch (paint.getFilterQuality()) {
case kNone_SkFilterQuality:
textureFilterMode = GrTextureParams::kNone_FilterMode;
break;
case kLow_SkFilterQuality:
textureFilterMode = GrTextureParams::kBilerp_FilterMode;
break;
case kMedium_SkFilterQuality:{
SkMatrix matrix;
matrix.setConcat(viewM, this->getLocalMatrix());
if (matrix.getMinScale() < SK_Scalar1) {
textureFilterMode = GrTextureParams::kMipMap_FilterMode;
} else {
// Don't trigger MIP level generation unnecessarily.
textureFilterMode = GrTextureParams::kBilerp_FilterMode;
}
break;
}
case kHigh_SkFilterQuality:
default:
SkErrorInternals::SetError(kInvalidPaint_SkError,
"Sorry, I don't understand the filtering "
"mode you asked for. Falling back to "
"MIPMaps.");
textureFilterMode = GrTextureParams::kMipMap_FilterMode;
break;
}
// TODO: support other tile modes
GrTextureParams params(kClamp_TileMode, textureFilterMode);
SkAutoTUnref<GrTexture> diffuseTexture(GrRefCachedBitmapTexture(context, fDiffuseMap, ¶ms));
if (!diffuseTexture) {
SkErrorInternals::SetError(kInternalError_SkError,
"Couldn't convert bitmap to texture.");
return false;
}
SkAutoTUnref<GrTexture> normalTexture(GrRefCachedBitmapTexture(context, fNormalMap, ¶ms));
if (!normalTexture) {
SkErrorInternals::SetError(kInternalError_SkError,
"Couldn't convert bitmap to texture.");
return false;
}
GrColor lightColor = GrColorPackRGBA(SkColorGetR(fLight.fColor), SkColorGetG(fLight.fColor),
SkColorGetB(fLight.fColor), SkColorGetA(fLight.fColor));
GrColor ambientColor = GrColorPackRGBA(SkColorGetR(fAmbientColor), SkColorGetG(fAmbientColor),
SkColorGetB(fAmbientColor), SkColorGetA(fAmbientColor));
*fp = SkNEW_ARGS(LightingFP, (diffuseTexture, normalTexture, matrix,
fLight.fDirection, lightColor, ambientColor));
*color = GrColorPackA4(paint.getAlpha());
return true;
}
void onComputeInvariantOutput(GrInvariantOutput* inout) const override {
// The output is always black. The alpha value for the color passed in is arbitrary.
inout->setToOther(kRGB_GrColorComponentFlags, GrColorPackRGBA(0, 0, 0, 0),
GrInvariantOutput::kWill_ReadInput);
}
static inline GrColor skcolor_to_grcolor_nopremultiply(SkColor c) {
unsigned r = SkColorGetR(c);
unsigned g = SkColorGetG(c);
unsigned b = SkColorGetB(c);
return GrColorPackRGBA(r, g, b, 0xff);
}
bool GrPaint::getOpaqueAndKnownColor(GrColor* solidColor,
uint32_t* solidColorKnownComponents) const {
// TODO: Share this implementation with GrDrawState
GrColor coverage = GrColorPackRGBA(fCoverage, fCoverage, fCoverage, fCoverage);
uint32_t coverageComps = kRGBA_GrColorComponentFlags;
int count = fCoverageStages.count();
for (int i = 0; i < count; ++i) {
(*fCoverageStages[i].getEffect())->getConstantColorComponents(&coverage, &coverageComps);
}
if (kRGBA_GrColorComponentFlags != coverageComps || 0xffffffff != coverage) {
return false;
}
GrColor color = fColor;
uint32_t colorComps = kRGBA_GrColorComponentFlags;
count = fColorStages.count();
for (int i = 0; i < count; ++i) {
(*fColorStages[i].getEffect())->getConstantColorComponents(&color, &colorComps);
}
SkASSERT((NULL == solidColor) == (NULL == solidColorKnownComponents));
GrBlendCoeff srcCoeff = fSrcBlendCoeff;
GrBlendCoeff dstCoeff = fDstBlendCoeff;
GrSimplifyBlend(&srcCoeff, &dstCoeff, color, colorComps, 0, 0, 0);
bool opaque = kZero_GrBlendCoeff == dstCoeff && !GrBlendCoeffRefsDst(srcCoeff);
if (NULL != solidColor) {
if (opaque) {
switch (srcCoeff) {
case kZero_GrBlendCoeff:
*solidColor = 0;
*solidColorKnownComponents = kRGBA_GrColorComponentFlags;
break;
case kOne_GrBlendCoeff:
*solidColor = color;
*solidColorKnownComponents = colorComps;
break;
// The src coeff should never refer to the src and if it refers to dst then opaque
// should have been false.
case kSC_GrBlendCoeff:
case kISC_GrBlendCoeff:
case kDC_GrBlendCoeff:
case kIDC_GrBlendCoeff:
case kSA_GrBlendCoeff:
case kISA_GrBlendCoeff:
case kDA_GrBlendCoeff:
case kIDA_GrBlendCoeff:
default:
SkFAIL("srcCoeff should not refer to src or dst.");
break;
// TODO: update this once GrPaint actually has a const color.
case kConstC_GrBlendCoeff:
case kIConstC_GrBlendCoeff:
case kConstA_GrBlendCoeff:
case kIConstA_GrBlendCoeff:
*solidColorKnownComponents = 0;
break;
}
} else {
solidColorKnownComponents = 0;
}
}
return opaque;
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ReadWriteAlpha, reporter, ctxInfo) {
GrContext* context = ctxInfo.grContext();
unsigned char alphaData[X_SIZE * Y_SIZE];
static const int kClearValue = 0x2;
bool match;
static const size_t kRowBytes[] = {0, X_SIZE, X_SIZE + 1, 2 * X_SIZE - 1};
{
GrSurfaceDesc desc;
desc.fFlags = kNone_GrSurfaceFlags;
desc.fConfig = kAlpha_8_GrPixelConfig; // it is a single channel texture
desc.fWidth = X_SIZE;
desc.fHeight = Y_SIZE;
// We are initializing the texture with zeros here
memset(alphaData, 0, X_SIZE * Y_SIZE);
sk_sp<GrTextureProxy> proxy(GrSurfaceProxy::MakeDeferred(context->resourceProvider(),
desc,
SkBudgeted::kNo,
alphaData, 0));
if (!proxy) {
ERRORF(reporter, "Could not create alpha texture.");
return;
}
sk_sp<GrSurfaceContext> sContext(context->contextPriv().makeWrappedSurfaceContext(
std::move(proxy), nullptr));
const SkImageInfo ii = SkImageInfo::MakeA8(X_SIZE, Y_SIZE);
sk_sp<SkSurface> surf(SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, ii));
// create a distinctive texture
for (int y = 0; y < Y_SIZE; ++y) {
for (int x = 0; x < X_SIZE; ++x) {
alphaData[y * X_SIZE + x] = y*X_SIZE+x;
}
}
for (auto rowBytes : kRowBytes) {
// upload the texture (do per-rowbytes iteration because we may overwrite below).
bool result = sContext->writePixels(ii, alphaData, 0, 0, 0);
REPORTER_ASSERT_MESSAGE(reporter, result, "Initial A8 writePixels failed");
size_t nonZeroRowBytes = rowBytes ? rowBytes : X_SIZE;
std::unique_ptr<uint8_t[]> readback(new uint8_t[nonZeroRowBytes * Y_SIZE]);
// clear readback to something non-zero so we can detect readback failures
memset(readback.get(), kClearValue, nonZeroRowBytes * Y_SIZE);
// read the texture back
result = sContext->readPixels(ii, readback.get(), rowBytes, 0, 0);
REPORTER_ASSERT_MESSAGE(reporter, result, "Initial A8 readPixels failed");
// make sure the original & read back versions match
SkString msg;
msg.printf("rb:%d A8", SkToU32(rowBytes));
validate_alpha_data(reporter, X_SIZE, Y_SIZE, readback.get(), nonZeroRowBytes,
alphaData, msg);
// Now try writing to a single channel surface (if we could create one).
if (surf) {
SkCanvas* canvas = surf->getCanvas();
SkPaint paint;
const SkRect rect = SkRect::MakeLTRB(-10, -10, X_SIZE + 10, Y_SIZE + 10);
paint.setColor(SK_ColorWHITE);
canvas->drawRect(rect, paint);
memset(readback.get(), kClearValue, nonZeroRowBytes * Y_SIZE);
result = surf->readPixels(ii, readback.get(), nonZeroRowBytes, 0, 0);
REPORTER_ASSERT_MESSAGE(reporter, result, "A8 readPixels after clear failed");
match = true;
for (int y = 0; y < Y_SIZE && match; ++y) {
for (int x = 0; x < X_SIZE && match; ++x) {
uint8_t rbValue = readback.get()[y * nonZeroRowBytes + x];
if (0xFF != rbValue) {
ERRORF(reporter,
"Failed alpha readback after clear. Expected: 0xFF, Got: 0x%02x"
" at (%d,%d), rb:%d", rbValue, x, y, SkToU32(rowBytes));
match = false;
}
}
}
}
}
}
static const GrPixelConfig kRGBAConfigs[] {
kRGBA_8888_GrPixelConfig,
kBGRA_8888_GrPixelConfig,
kSRGBA_8888_GrPixelConfig
};
for (int y = 0; y < Y_SIZE; ++y) {
for (int x = 0; x < X_SIZE; ++x) {
alphaData[y * X_SIZE + x] = y*X_SIZE+x;
}
}
const SkImageInfo dstInfo = SkImageInfo::Make(X_SIZE, Y_SIZE,
kAlpha_8_SkColorType,
kPremul_SkAlphaType);
// Attempt to read back just alpha from a RGBA/BGRA texture. Once with a texture-only src and
// once with a render target.
for (auto config : kRGBAConfigs) {
for (int rt = 0; rt < 2; ++rt) {
GrSurfaceDesc desc;
desc.fFlags = rt ? kRenderTarget_GrSurfaceFlag : kNone_GrSurfaceFlags;
desc.fConfig = config;
desc.fWidth = X_SIZE;
desc.fHeight = Y_SIZE;
uint32_t rgbaData[X_SIZE * Y_SIZE];
// Make the alpha channel of the rgba texture come from alphaData.
for (int y = 0; y < Y_SIZE; ++y) {
for (int x = 0; x < X_SIZE; ++x) {
rgbaData[y * X_SIZE + x] = GrColorPackRGBA(6, 7, 8, alphaData[y * X_SIZE + x]);
}
}
sk_sp<GrTextureProxy> proxy =
GrSurfaceProxy::MakeDeferred(context->resourceProvider(), desc, SkBudgeted::kNo,
rgbaData, 0);
if (!proxy) {
// We always expect to be able to create a RGBA texture
if (!rt && kRGBA_8888_GrPixelConfig == desc.fConfig) {
ERRORF(reporter, "Failed to create RGBA texture.");
}
continue;
}
sk_sp<GrSurfaceContext> sContext = context->contextPriv().makeWrappedSurfaceContext(
std::move(proxy), nullptr);
for (auto rowBytes : kRowBytes) {
size_t nonZeroRowBytes = rowBytes ? rowBytes : X_SIZE;
std::unique_ptr<uint8_t[]> readback(new uint8_t[nonZeroRowBytes * Y_SIZE]);
// Clear so we don't accidentally see values from previous iteration.
memset(readback.get(), kClearValue, nonZeroRowBytes * Y_SIZE);
// read the texture back
bool result = sContext->readPixels(dstInfo, readback.get(), rowBytes, 0, 0);
REPORTER_ASSERT_MESSAGE(reporter, result, "8888 readPixels failed");
// make sure the original & read back versions match
SkString msg;
msg.printf("rt:%d, rb:%d 8888", rt, SkToU32(rowBytes));
validate_alpha_data(reporter, X_SIZE, Y_SIZE, readback.get(), nonZeroRowBytes,
alphaData, msg);
}
}
}
}
static void test_getConstantColorComponents(skiatest::Reporter* reporter, GrContext* grContext) {
struct GetConstantComponentTestCase {
// "Shape drawn with"
uint32_t inputComponents; // "rgb of", "red of", "alpha of", ...
GrColor inputColor; // "[color]"
SkColor filterColor; // "with filter color [color]"
SkXfermode::Mode filterMode; // "in mode [mode]"
// "produces"
uint32_t outputComponents; // "rgb of", "red of", "alpha of", ...
GrColor outputColor; // "[color]"
};
// Shorthands.
enum {
kR = kR_GrColorComponentFlag,
kG = kG_GrColorComponentFlag,
kB = kB_GrColorComponentFlag,
kA = kA_GrColorComponentFlag,
kRGB = kRGB_GrColorComponentFlags,
kRGBA = kRGBA_GrColorComponentFlags
};
// Note: below, SkColors are non-premultiplied, where as GrColors are premultiplied.
const SkColor c1 = SkColorSetARGB(200, 200, 200, 200);
const SkColor c2 = SkColorSetARGB(60, 60, 60, 60);
const GrColor gr_c1 = SkColor2GrColor(c1);
const GrColor gr_c2 = SkColor2GrColor(c2);
const GrColor gr_black = GrColorPackRGBA(0, 0, 0, 0);
const GrColor gr_white = GrColorPackRGBA(255, 255, 255, 255);
const GrColor gr_whiteTrans = GrColorPackRGBA(128, 128, 128, 128);
GetConstantComponentTestCase filterTests[] = {
// A color filtered with Clear produces black.
{ kRGBA, gr_white, SK_ColorBLACK, SkXfermode::kClear_Mode, kRGBA, gr_black },
{ kRGBA, gr_c1, SK_ColorWHITE, SkXfermode::kClear_Mode, kRGBA, gr_black },
{ kR, gr_white, c1, SkXfermode::kClear_Mode, kRGBA, gr_black },
// A color filtered with a color in mode Src, produces the filter color.
{ kRGBA, gr_c2, c1, SkXfermode::kSrc_Mode, kRGBA, gr_c1 },
{ kA, gr_c1, c1, SkXfermode::kSrc_Mode, kRGBA, gr_c1 },
// A color filtered with SrcOver produces a color.
{ kRGBA, gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kSrcOver_Mode, kRGBA, GrColorPackRGBA(164, 164, 164, 192)},
// An unknown color with known alpha filtered with SrcOver produces an unknown color with known alpha.
{ kA , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kSrcOver_Mode, kA , GrColorPackRGBA(0, 0, 0, 192)},
// A color with unknown alpha filtered with SrcOver produces a color with unknown alpha.
{ kRGB , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kSrcOver_Mode, kRGB, GrColorPackRGBA(164, 164, 164, 0)},
// A color filtered with DstOver produces a color.
{ kRGBA, gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kDstOver_Mode, kRGBA, GrColorPackRGBA(178, 178, 178, 192)},
// An unknown color with known alpha filtered with DstOver produces an unknown color with known alpha.
{ kA , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kDstOver_Mode, kA , GrColorPackRGBA(0, 0, 0, 192)},
// A color with unknown alpha filtered with DstOver produces an unknown color.
{ kRGB , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kDstOver_Mode, 0 , gr_black},
// An unknown color with known alpha and red component filtered with Multiply produces an unknown color with known red and alpha.
{ kR|kA , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kModulate_Mode, kR|kA, GrColorPackRGBA(50, 0, 0, 64) }
};
for (size_t i = 0; i < SK_ARRAY_COUNT(filterTests); ++i) {
const GetConstantComponentTestCase& test = filterTests[i];
SkAutoTUnref<SkColorFilter> cf(SkColorFilter::CreateModeFilter(test.filterColor, test.filterMode));
SkAutoTUnref<GrEffectRef> grEffect(cf->asNewEffect(grContext));
GrColor color = test.inputColor;
uint32_t components = test.inputComponents;
grEffect->get()->getConstantColorComponents(&color, &components);
REPORTER_ASSERT(reporter, filterColor(color, components) == test.outputColor);
REPORTER_ASSERT(reporter, test.outputComponents == components);
}
}
bool GrPaint::getOpaqueAndKnownColor(GrColor* solidColor,
uint32_t* solidColorKnownComponents) const {
// TODO: Share this implementation with GrDrawState
GrProcessor::InvariantOutput inout;
inout.fColor = GrColorPackRGBA(fCoverage, fCoverage, fCoverage, fCoverage);
inout.fValidFlags = kRGBA_GrColorComponentFlags;
inout.fIsSingleComponent = false;
int count = fCoverageStages.count();
for (int i = 0; i < count; ++i) {
fCoverageStages[i].getProcessor()->computeInvariantOutput(&inout);
}
if (!inout.isSolidWhite()) {
return false;
}
inout.fColor = fColor;
inout.fValidFlags = kRGBA_GrColorComponentFlags;
inout.fIsSingleComponent = false;
count = fColorStages.count();
for (int i = 0; i < count; ++i) {
fColorStages[i].getProcessor()->computeInvariantOutput(&inout);
}
SkASSERT((NULL == solidColor) == (NULL == solidColorKnownComponents));
GrBlendCoeff srcCoeff = fSrcBlendCoeff;
GrBlendCoeff dstCoeff = fDstBlendCoeff;
GrSimplifyBlend(&srcCoeff, &dstCoeff, inout.fColor, inout.fValidFlags,
0, 0, 0);
bool opaque = kZero_GrBlendCoeff == dstCoeff && !GrBlendCoeffRefsDst(srcCoeff);
if (solidColor) {
if (opaque) {
switch (srcCoeff) {
case kZero_GrBlendCoeff:
*solidColor = 0;
*solidColorKnownComponents = kRGBA_GrColorComponentFlags;
break;
case kOne_GrBlendCoeff:
*solidColor = inout.fColor;
*solidColorKnownComponents = inout.fValidFlags;
break;
// The src coeff should never refer to the src and if it refers to dst then opaque
// should have been false.
case kSC_GrBlendCoeff:
case kISC_GrBlendCoeff:
case kDC_GrBlendCoeff:
case kIDC_GrBlendCoeff:
case kSA_GrBlendCoeff:
case kISA_GrBlendCoeff:
case kDA_GrBlendCoeff:
case kIDA_GrBlendCoeff:
default:
SkFAIL("srcCoeff should not refer to src or dst.");
break;
// TODO: update this once GrPaint actually has a const color.
case kConstC_GrBlendCoeff:
case kIConstC_GrBlendCoeff:
case kConstA_GrBlendCoeff:
case kIConstA_GrBlendCoeff:
*solidColorKnownComponents = 0;
break;
}
} else {
solidColorKnownComponents = 0;
}
}
return opaque;
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ReadWriteAlpha, reporter, context) {
unsigned char alphaData[X_SIZE * Y_SIZE];
bool match;
static const size_t kRowBytes[] = {0, X_SIZE, X_SIZE + 1, 2 * X_SIZE - 1};
for (int rt = 0; rt < 2; ++rt) {
GrSurfaceDesc desc;
// let Skia know we will be using this texture as a render target
desc.fFlags = rt ? kRenderTarget_GrSurfaceFlag : kNone_GrSurfaceFlags;
// it is a single channel texture
desc.fConfig = kAlpha_8_GrPixelConfig;
desc.fWidth = X_SIZE;
desc.fHeight = Y_SIZE;
// We are initializing the texture with zeros here
memset(alphaData, 0, X_SIZE * Y_SIZE);
SkAutoTUnref<GrTexture> texture(
context->textureProvider()->createTexture(desc, SkBudgeted::kNo , alphaData, 0));
if (!texture) {
if (!rt) {
ERRORF(reporter, "Could not create alpha texture.");
}
continue;
}
// create a distinctive texture
for (int y = 0; y < Y_SIZE; ++y) {
for (int x = 0; x < X_SIZE; ++x) {
alphaData[y * X_SIZE + x] = y*X_SIZE+x;
}
}
for (auto rowBytes : kRowBytes) {
// upload the texture (do per-rowbytes iteration because we may overwrite below).
texture->writePixels(0, 0, desc.fWidth, desc.fHeight, desc.fConfig,
alphaData, 0);
size_t nonZeroRowBytes = rowBytes ? rowBytes : X_SIZE;
SkAutoTDeleteArray<uint8_t> readback(new uint8_t[nonZeroRowBytes * Y_SIZE]);
// clear readback to something non-zero so we can detect readback failures
memset(readback.get(), 0x1, nonZeroRowBytes * Y_SIZE);
// read the texture back
texture->readPixels(0, 0, desc.fWidth, desc.fHeight, desc.fConfig,
readback.get(), rowBytes);
// make sure the original & read back versions match
SkString msg;
msg.printf("rt:%d, rb:%d", rt, SkToU32(rowBytes));
validate_alpha_data(reporter, X_SIZE, Y_SIZE, readback.get(), nonZeroRowBytes,
alphaData, msg);
// Now try writing on the single channel texture (if we could create as a RT).
if (texture->asRenderTarget()) {
SkSurfaceProps props(SkSurfaceProps::kLegacyFontHost_InitType);
SkAutoTUnref<SkBaseDevice> device(SkGpuDevice::Create(
texture->asRenderTarget(), &props, SkGpuDevice::kUninit_InitContents));
SkCanvas canvas(device);
SkPaint paint;
const SkRect rect = SkRect::MakeLTRB(-10, -10, X_SIZE + 10, Y_SIZE + 10);
paint.setColor(SK_ColorWHITE);
canvas.drawRect(rect, paint);
memset(readback.get(), 0x1, nonZeroRowBytes * Y_SIZE);
texture->readPixels(0, 0, desc.fWidth, desc.fHeight, desc.fConfig, readback.get(),
rowBytes);
match = true;
for (int y = 0; y < Y_SIZE && match; ++y) {
for (int x = 0; x < X_SIZE && match; ++x) {
uint8_t rbValue = readback.get()[y * nonZeroRowBytes + x];
if (0xFF != rbValue) {
ERRORF(reporter,
"Failed alpha readback after clear. Expected: 0xFF, Got: 0x%02x"
" at (%d,%d), rb:%d", rbValue, x, y, SkToU32(rowBytes));
match = false;
}
}
}
}
}
}
static const GrPixelConfig kRGBAConfigs[] {
kRGBA_8888_GrPixelConfig,
kBGRA_8888_GrPixelConfig,
kSRGBA_8888_GrPixelConfig
};
for (int y = 0; y < Y_SIZE; ++y) {
for (int x = 0; x < X_SIZE; ++x) {
alphaData[y * X_SIZE + x] = y*X_SIZE+x;
}
}
// Attempt to read back just alpha from a RGBA/BGRA texture. Once with a texture-only src and
// once with a render target.
for (auto cfg : kRGBAConfigs) {
for (int rt = 0; rt < 2; ++rt) {
GrSurfaceDesc desc;
desc.fFlags = rt ? kRenderTarget_GrSurfaceFlag : kNone_GrSurfaceFlags;
desc.fConfig = cfg;
desc.fWidth = X_SIZE;
desc.fHeight = Y_SIZE;
uint32_t rgbaData[X_SIZE * Y_SIZE];
// Make the alpha channel of the rgba texture come from alphaData.
for (int y = 0; y < Y_SIZE; ++y) {
for (int x = 0; x < X_SIZE; ++x) {
rgbaData[y * X_SIZE + x] = GrColorPackRGBA(6, 7, 8, alphaData[y * X_SIZE + x]);
}
}
SkAutoTUnref<GrTexture> texture(
context->textureProvider()->createTexture(desc, SkBudgeted::kNo, rgbaData, 0));
if (!texture) {
// We always expect to be able to create a RGBA texture
if (!rt && kRGBA_8888_GrPixelConfig == desc.fConfig) {
ERRORF(reporter, "Failed to create RGBA texture.");
}
continue;
}
for (auto rowBytes : kRowBytes) {
size_t nonZeroRowBytes = rowBytes ? rowBytes : X_SIZE;
SkAutoTDeleteArray<uint8_t> readback(new uint8_t[nonZeroRowBytes * Y_SIZE]);
// Clear so we don't accidentally see values from previous iteration.
memset(readback.get(), 0x0, nonZeroRowBytes * Y_SIZE);
// read the texture back
texture->readPixels(0, 0, desc.fWidth, desc.fHeight, kAlpha_8_GrPixelConfig,
readback.get(), rowBytes);
// make sure the original & read back versions match
SkString msg;
msg.printf("rt:%d, rb:%d", rt, SkToU32(rowBytes));
validate_alpha_data(reporter, X_SIZE, Y_SIZE, readback.get(), nonZeroRowBytes,
alphaData, msg);
}
}
}
}
static void test_getConstantColorComponents(skiatest::Reporter* reporter, GrContext* grContext) {
struct GetConstantComponentTestCase {
// "Shape drawn with"
uint32_t inputComponents; // "rgb of", "red of", "alpha of", ...
GrColor inputColor; // "[color]"
SkColor filterColor; // "with filter color [color]"
SkXfermode::Mode filterMode; // "in mode [mode]"
// "produces"
uint32_t outputComponents; // "rgb of", "red of", "alpha of", ...
GrColor outputColor; // "[color]"
};
// Shorthands.
enum {
kR = kR_GrColorComponentFlag,
kG = kG_GrColorComponentFlag,
kB = kB_GrColorComponentFlag,
kA = kA_GrColorComponentFlag,
kRGB = kRGB_GrColorComponentFlags,
kRGBA = kRGBA_GrColorComponentFlags
};
// Note: below, SkColors are non-premultiplied, where as GrColors are premultiplied.
const SkColor c1 = SkColorSetARGB(200, 200, 200, 200);
const SkColor c2 = SkColorSetARGB(60, 60, 60, 60);
const GrColor gr_c1 = SkColor2GrColor(c1);
const GrColor gr_c2 = SkColor2GrColor(c2);
const GrColor gr_black = GrColorPackA4(0);
const GrColor gr_white = GrColorPackA4(255);
const GrColor gr_whiteTrans = GrColorPackA4(128);
GetConstantComponentTestCase filterTests[] = {
// A color filtered with Clear produces black.
{ kRGBA, gr_white, SK_ColorBLACK, SkXfermode::kClear_Mode, kRGBA, gr_black },
{ kRGBA, gr_c1, SK_ColorWHITE, SkXfermode::kClear_Mode, kRGBA, gr_black },
{ kR, gr_white, c1, SkXfermode::kClear_Mode, kRGBA, gr_black },
// A color filtered with a color in mode Src, produces the filter color.
{ kRGBA, gr_c2, c1, SkXfermode::kSrc_Mode, kRGBA, gr_c1 },
{ kA, gr_c1, c1, SkXfermode::kSrc_Mode, kRGBA, gr_c1 },
// A color filtered with SrcOver produces a color.
{ kRGBA, gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kSrcOver_Mode, kRGBA, GrColorPackRGBA(164, 164, 164, 192)},
// An unknown color with known alpha filtered with SrcOver produces an unknown color with known alpha.
{ kA , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kSrcOver_Mode, kA , GrColorPackRGBA(0, 0, 0, 192)},
// A color with unknown alpha filtered with SrcOver produces a color with unknown alpha.
{ kRGB , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kSrcOver_Mode, kRGB, GrColorPackRGBA(164, 164, 164, 0)},
// A color filtered with DstOver produces a color.
{ kRGBA, gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kDstOver_Mode, kRGBA, GrColorPackRGBA(178, 178, 178, 192)},
// An unknown color with known alpha filtered with DstOver produces an unknown color with known alpha.
{ kA , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kDstOver_Mode, kA , GrColorPackRGBA(0, 0, 0, 192)},
// A color with unknown alpha filtered with DstOver produces an unknown color.
{ kRGB , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kDstOver_Mode, 0 , gr_black},
// An unknown color with known alpha and red component filtered with Multiply produces an unknown color with known red and alpha.
{ kR|kA , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kModulate_Mode, kR|kA, GrColorPackRGBA(50, 0, 0, 64) }
};
GrPaint paint;
for (size_t i = 0; i < SK_ARRAY_COUNT(filterTests); ++i) {
const GetConstantComponentTestCase& test = filterTests[i];
SkAutoTUnref<SkColorFilter> cf(SkColorFilter::CreateModeFilter(test.filterColor, test.filterMode));
SkTDArray<const GrFragmentProcessor*> array;
bool hasFrag = cf->asFragmentProcessors(grContext, paint.getProcessorDataManager(), &array);
REPORTER_ASSERT(reporter, hasFrag);
REPORTER_ASSERT(reporter, 1 == array.count());
GrInvariantOutput inout(test.inputColor,
static_cast<GrColorComponentFlags>(test.inputComponents),
false);
array[0]->computeInvariantOutput(&inout);
REPORTER_ASSERT(reporter, filterColor(inout.color(), inout.validFlags()) == test.outputColor);
REPORTER_ASSERT(reporter, test.outputComponents == inout.validFlags());
array[0]->unref();
}
}
bool GrAndroidPathRenderer::onDrawPath(const SkPath& origPath,
const SkStrokeRec& stroke,
GrDrawTarget* target,
bool antiAlias) {
// generate verts using Android algorithm
android::uirenderer::VertexBuffer vertices;
android::uirenderer::PathRenderer::ConvexPathVertices(origPath, stroke, antiAlias, NULL,
&vertices);
// set vertex attributes depending on anti-alias
GrDrawState* drawState = target->drawState();
if (antiAlias) {
// position + coverage
GrVertexAttrib attribs[] = {
GrVertexAttrib(kVec2f_GrVertexAttribType, 0),
GrVertexAttrib(kVec4ub_GrVertexAttribType, sizeof(GrPoint))
};
drawState->setVertexAttribs(attribs, SK_ARRAY_COUNT(attribs));
drawState->setAttribIndex(GrDrawState::kPosition_AttribIndex, 0);
drawState->setAttribIndex(GrDrawState::kCoverage_AttribIndex, 1);
drawState->setAttribBindings(GrDrawState::kCoverage_AttribBindingsBit);
} else {
drawState->setDefaultVertexAttribs();
}
// allocate our vert buffer
int vertCount = vertices.getSize();
GrDrawTarget::AutoReleaseGeometry geo(target, vertCount, 0);
if (!geo.succeeded()) {
SkDebugf("Failed to get space for vertices!\n");
return false;
}
// copy android verts to our vertex buffer
if (antiAlias) {
SkASSERT(sizeof(ColorVertex) == drawState->getVertexSize());
ColorVertex* outVert = reinterpret_cast<ColorVertex*>(geo.vertices());
android::uirenderer::AlphaVertex* inVert =
reinterpret_cast<android::uirenderer::AlphaVertex*>(vertices.getBuffer());
for (int i = 0; i < vertCount; ++i) {
// copy vertex position
outVert->pos.set(inVert->position[0], inVert->position[1]);
// copy alpha
int coverage = static_cast<int>(inVert->alpha * 0xff);
outVert->color = GrColorPackRGBA(coverage, coverage, coverage, coverage);
++outVert;
++inVert;
}
} else {
size_t vsize = drawState->getVertexSize();
size_t copySize = vsize*vertCount;
memcpy(geo.vertices(), vertices.getBuffer(), copySize);
}
// render it
target->drawNonIndexed(kTriangleStrip_GrPrimitiveType, 0, vertCount);
return true;
}
using ScissorState = GrPipeline::ScissorState;
static constexpr int kScreenSize = 6;
static constexpr int kNumMeshes = 4;
static constexpr int kScreenSplitX = kScreenSize/2;
static constexpr int kScreenSplitY = kScreenSize/2;
static const GrPipeline::DynamicState kDynamicStates[kNumMeshes] = {
{SkIRect::MakeLTRB(0, 0, kScreenSplitX, kScreenSplitY)},
{SkIRect::MakeLTRB(0, kScreenSplitY, kScreenSplitX, kScreenSize)},
{SkIRect::MakeLTRB(kScreenSplitX, 0, kScreenSize, kScreenSplitY)},
{SkIRect::MakeLTRB(kScreenSplitX, kScreenSplitY, kScreenSize, kScreenSize)},
};
static const GrColor kMeshColors[kNumMeshes] {
GrColorPackRGBA(255, 0, 0, 255),
GrColorPackRGBA(0, 255, 0, 255),
GrColorPackRGBA(0, 0, 255, 255),
GrColorPackRGBA(0, 0, 0, 255)
};
struct Vertex {
float fX;
float fY;
GrColor fColor;
};
class GrPipelineDynamicStateTestProcessor : public GrGeometryProcessor {
public:
GrPipelineDynamicStateTestProcessor()
: fVertex(this->addVertexAttrib("vertex", kVec2f_GrVertexAttribType))
