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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm/gm.h"
#include "gm/verifiers/gmverifier.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkBlendMode.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkFilterQuality.h"
#include "include/core/SkFont.h"
#include "include/core/SkFontTypes.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkRect.h"
#include "include/core/SkShader.h"
#include "include/core/SkTileMode.h"
#include "include/core/SkTypeface.h"
#include "include/gpu/GrRecordingContext.h"
#include "src/core/SkTraceEvent.h"
#include "tools/ToolUtils.h"
#include <stdarg.h>
class GrRenderTargetContext;
using namespace skiagm;
constexpr char GM::kErrorMsg_DrawSkippedGpuOnly[];
static void draw_failure_message(SkCanvas* canvas, const char format[], ...) {
SkString failureMsg;
va_list argp;
va_start(argp, format);
failureMsg.appendVAList(format, argp);
va_end(argp);
constexpr SkScalar kOffset = 5.0f;
canvas->drawColor(SkColorSetRGB(200,0,0));
SkFont font;
SkRect bounds;
font.measureText(failureMsg.c_str(), failureMsg.size(), SkTextEncoding::kUTF8, &bounds);
SkPaint textPaint(SkColors::kWhite);
canvas->drawString(failureMsg, kOffset, bounds.height() + kOffset, font, textPaint);
}
static void draw_gpu_only_message(SkCanvas* canvas) {
SkBitmap bmp;
bmp.allocN32Pixels(128, 64);
SkCanvas bmpCanvas(bmp);
bmpCanvas.drawColor(SK_ColorWHITE);
SkFont font(ToolUtils::create_portable_typeface(), 20);
SkPaint paint(SkColors::kRed);
bmpCanvas.drawString("GPU Only", 20, 40, font, paint);
SkMatrix localM;
localM.setRotate(35.f);
localM.postTranslate(10.f, 0.f);
paint.setShader(bmp.makeShader(SkTileMode::kMirror, SkTileMode::kMirror, &localM));
paint.setFilterQuality(kMedium_SkFilterQuality);
canvas->drawPaint(paint);
}
static void handle_gm_failure(SkCanvas* canvas, DrawResult result, const SkString& errorMsg) {
if (DrawResult::kFail == result) {
draw_failure_message(canvas, "DRAW FAILED: %s", errorMsg.c_str());
} else if (SkString(GM::kErrorMsg_DrawSkippedGpuOnly) == errorMsg) {
draw_gpu_only_message(canvas);
} else {
draw_failure_message(canvas, "DRAW SKIPPED: %s", errorMsg.c_str());
}
}
GM::GM(SkColor bgColor) {
fMode = kGM_Mode;
fBGColor = bgColor;
}
GM::~GM() {}
DrawResult GM::gpuSetup(GrDirectContext* context, SkCanvas* canvas, SkString* errorMsg) {
TRACE_EVENT1("GM", TRACE_FUNC, "name", TRACE_STR_COPY(this->getName()));
if (!fGpuSetup) {
// When drawn in viewer, gpuSetup will be called multiple times with the same
// GrContext.
fGpuSetup = true;
fGpuSetupResult = this->onGpuSetup(context, errorMsg);
}
if (DrawResult::kOk != fGpuSetupResult) {
handle_gm_failure(canvas, fGpuSetupResult, *errorMsg);
}
return fGpuSetupResult;
}
void GM::gpuTeardown() {
this->onGpuTeardown();
// After 'gpuTeardown' a GM can be reused with a different GrContext. Reset the flag
// so 'onGpuSetup' will be called.
fGpuSetup = false;
}
DrawResult GM::draw(SkCanvas* canvas, SkString* errorMsg) {
TRACE_EVENT1("GM", TRACE_FUNC, "name", TRACE_STR_COPY(this->getName()));
this->drawBackground(canvas);
return this->drawContent(canvas, errorMsg);
}
DrawResult GM::drawContent(SkCanvas* canvas, SkString* errorMsg) {
TRACE_EVENT0("GM", TRACE_FUNC);
this->onceBeforeDraw();
SkAutoCanvasRestore acr(canvas, true);
DrawResult drawResult = this->onDraw(canvas, errorMsg);
if (DrawResult::kOk != drawResult) {
handle_gm_failure(canvas, drawResult, *errorMsg);
}
return drawResult;
}
void GM::drawBackground(SkCanvas* canvas) {
TRACE_EVENT0("GM", TRACE_FUNC);
this->onceBeforeDraw();
canvas->drawColor(fBGColor, SkBlendMode::kSrc);
}
DrawResult GM::onDraw(SkCanvas* canvas, SkString* errorMsg) {
this->onDraw(canvas);
return DrawResult::kOk;
}
void GM::onDraw(SkCanvas*) { SK_ABORT("Not implemented."); }
SkISize SimpleGM::onISize() { return fSize; }
SkString SimpleGM::onShortName() { return fName; }
DrawResult SimpleGM::onDraw(SkCanvas* canvas, SkString* errorMsg) {
return fDrawProc(canvas, errorMsg);
}
SkISize SimpleGpuGM::onISize() { return fSize; }
SkString SimpleGpuGM::onShortName() { return fName; }
DrawResult SimpleGpuGM::onDraw(GrRecordingContext* ctx, GrRenderTargetContext* rtc,
SkCanvas* canvas, SkString* errorMsg) {
return fDrawProc(ctx, rtc, canvas, errorMsg);
}
const char* GM::getName() {
if (fShortName.size() == 0) {
fShortName = this->onShortName();
}
return fShortName.c_str();
}
void GM::setBGColor(SkColor color) {
fBGColor = color;
}
bool GM::animate(double nanos) { return this->onAnimate(nanos); }
bool GM::runAsBench() const { return false; }
void GM::modifyGrContextOptions(GrContextOptions* options) {}
std::unique_ptr<verifiers::VerifierList> GM::getVerifiers() const {
// No verifiers by default.
return nullptr;
}
void GM::onOnceBeforeDraw() {}
bool GM::onAnimate(double /*nanos*/) { return false; }
bool GM::onChar(SkUnichar uni) { return false; }
bool GM::onGetControls(SkMetaData*) { return false; }
void GM::onSetControls(const SkMetaData&) {}
/////////////////////////////////////////////////////////////////////////////////////////////
void GM::drawSizeBounds(SkCanvas* canvas, SkColor color) {
canvas->drawRect(SkRect::Make(this->getISize()), SkPaint(SkColor4f::FromColor(color)));
}
// need to explicitly declare this, or we get some weird infinite loop llist
template GMRegistry* GMRegistry::gHead;
DrawResult GpuGM::onDraw(GrRecordingContext* ctx, GrRenderTargetContext* rtc, SkCanvas* canvas,
SkString* errorMsg) {
this->onDraw(ctx, rtc, canvas);
return DrawResult::kOk;
}
void GpuGM::onDraw(GrRecordingContext*, GrRenderTargetContext*, SkCanvas*) {
SK_ABORT("Not implemented.");
}
DrawResult GpuGM::onDraw(SkCanvas* canvas, SkString* errorMsg) {
auto ctx = canvas->recordingContext();
GrRenderTargetContext* rtc = canvas->internal_private_accessTopLayerRenderTargetContext();
if (!ctx || !rtc) {
*errorMsg = kErrorMsg_DrawSkippedGpuOnly;
return DrawResult::kSkip;
}
if (ctx->abandoned()) {
*errorMsg = "GrContext abandoned.";
return DrawResult::kSkip;
}
return this->onDraw(ctx, rtc, canvas, errorMsg);
}
template <typename Fn>
static void mark(SkCanvas* canvas, SkScalar x, SkScalar y, Fn&& fn) {
SkPaint alpha;
alpha.setAlpha(0x50);
canvas->saveLayer(nullptr, &alpha);
canvas->translate(x,y);
canvas->scale(2,2);
fn();
canvas->restore();
}
void MarkGMGood(SkCanvas* canvas, SkScalar x, SkScalar y) {
mark(canvas, x,y, [&]{
// A green circle.
canvas->drawCircle(0, 0, 12, SkPaint(SkColor4f::FromColor(SkColorSetRGB(27, 158, 119))));
// Cut out a check mark.
SkPaint paint(SkColors::kTransparent);
paint.setBlendMode(SkBlendMode::kSrc);
paint.setStrokeWidth(2);
paint.setStyle(SkPaint::kStroke_Style);
canvas->drawLine(-6, 0,
-1, 5, paint);
canvas->drawLine(-1, +5,
+7, -5, paint);
});
}
void MarkGMBad(SkCanvas* canvas, SkScalar x, SkScalar y) {
mark(canvas, x,y, [&] {
// A red circle.
canvas->drawCircle(0,0, 12, SkPaint(SkColor4f::FromColor(SkColorSetRGB(231, 41, 138))));
// Cut out an 'X'.
SkPaint paint(SkColors::kTransparent);
paint.setBlendMode(SkBlendMode::kSrc);
paint.setStrokeWidth(2);
paint.setStyle(SkPaint::kStroke_Style);
canvas->drawLine(-5,-5,
+5,+5, paint);
canvas->drawLine(+5,-5,
-5,+5, paint);
});
}