1aa1f5fcba
TBR:egdaniel@google.com Change-Id: Ia471dfc1278bcbeb2b485e4deeb3e932060c50a6 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/343576 Reviewed-by: Brian Salomon <bsalomon@google.com> Commit-Queue: Brian Salomon <bsalomon@google.com>
223 lines
8.7 KiB
C++
223 lines
8.7 KiB
C++
/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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// This test only works with the GPU backend.
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#include "gm/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkFont.h"
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#include "include/core/SkFontTypes.h"
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#include "include/core/SkMatrix.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkPoint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkShader.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkTileMode.h"
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#include "include/core/SkTypeface.h"
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#include "include/core/SkTypes.h"
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#include "include/effects/SkGradientShader.h"
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#include "include/gpu/GrConfig.h"
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#include "include/private/GrTypesPriv.h"
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#include "include/private/SkColorData.h"
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#include "src/core/SkMatrixProvider.h"
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#include "src/gpu/GrColor.h"
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#include "src/gpu/GrFragmentProcessor.h"
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#include "src/gpu/GrPaint.h"
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#include "src/gpu/GrSurfaceDrawContext.h"
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#include "src/gpu/SkGr.h"
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#include "src/gpu/effects/generated/GrConstColorProcessor.h"
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#include "src/gpu/ops/GrDrawOp.h"
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#include "src/gpu/ops/GrFillRectOp.h"
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#include "tools/ToolUtils.h"
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#include "tools/gpu/TestOps.h"
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#include <utility>
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namespace skiagm {
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/**
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* This GM directly exercises GrConstColorProcessor, ModulateRGBA and ModulateAlpha.
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*/
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class ColorProcessor : public GpuGM {
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public:
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enum class TestMode {
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kConstColor,
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kModulateRGBA,
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kModulateAlpha
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};
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ColorProcessor(TestMode mode) : fMode(mode) {
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this->setBGColor(0xFFDDDDDD);
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}
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protected:
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SkString onShortName() override {
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switch (fMode) {
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case TestMode::kConstColor: return SkString("const_color_processor");
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case TestMode::kModulateRGBA: return SkString("modulate_rgba");
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case TestMode::kModulateAlpha: return SkString("modulate_alpha");
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}
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SkUNREACHABLE;
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}
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SkISize onISize() override {
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return SkISize::Make(kWidth, kHeight);
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}
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void onOnceBeforeDraw() override {
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SkColor colors[] = { 0xFFFF0000, 0x2000FF00, 0xFF0000FF};
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SkPoint pts[] = { SkPoint::Make(0, 0), SkPoint::Make(kRectSize, kRectSize) };
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fShader = SkGradientShader::MakeLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors),
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SkTileMode::kClamp);
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}
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void onDraw(GrRecordingContext* context, GrSurfaceDrawContext* surfaceDrawContext,
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SkCanvas* canvas) override {
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constexpr GrColor kColors[] = {
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0xFFFFFFFF,
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0xFFFF00FF,
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0x80000000,
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0x00000000,
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};
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constexpr GrColor kPaintColors[] = {
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0xFFFFFFFF,
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0xFF0000FF,
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0x80000080,
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0x00000000,
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};
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SkScalar y = kPad;
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SkScalar x = kPad;
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SkScalar maxW = 0;
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for (size_t paintType = 0; paintType < SK_ARRAY_COUNT(kPaintColors) + 1; ++paintType) {
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for (size_t procColor = 0; procColor < SK_ARRAY_COUNT(kColors); ++procColor) {
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// translate by x,y for the canvas draws and the test target draws.
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canvas->save();
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canvas->translate(x, y);
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// rect to draw
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SkRect renderRect = SkRect::MakeXYWH(0, 0, kRectSize, kRectSize);
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// Create a base-layer FP for the const color processor to draw on top of.
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std::unique_ptr<GrFragmentProcessor> baseFP;
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if (paintType >= SK_ARRAY_COUNT(kPaintColors)) {
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GrColorInfo colorInfo;
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GrFPArgs args(context, SkSimpleMatrixProvider(SkMatrix::I()),
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kHigh_SkFilterQuality, &colorInfo);
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baseFP = as_SB(fShader)->asFragmentProcessor(args);
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} else {
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baseFP = GrConstColorProcessor::Make(
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SkPMColor4f::FromBytes_RGBA(kPaintColors[paintType]));
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}
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// Layer a color/modulation FP on top of the base layer, using various colors.
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std::unique_ptr<GrFragmentProcessor> colorFP;
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switch (fMode) {
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case TestMode::kConstColor:
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colorFP = GrConstColorProcessor::Make(
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SkPMColor4f::FromBytes_RGBA(kColors[procColor]));
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break;
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case TestMode::kModulateRGBA:
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colorFP = GrFragmentProcessor::ModulateRGBA(
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std::move(baseFP), SkPMColor4f::FromBytes_RGBA(kColors[procColor]));
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break;
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case TestMode::kModulateAlpha:
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colorFP = GrFragmentProcessor::ModulateAlpha(
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std::move(baseFP), SkPMColor4f::FromBytes_RGBA(kColors[procColor]));
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break;
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}
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// Render the FP tree.
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if (auto op = sk_gpu_test::test_ops::MakeRect(context,
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std::move(colorFP),
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renderRect.makeOffset(x, y),
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renderRect,
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SkMatrix::I())) {
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surfaceDrawContext->addDrawOp(std::move(op));
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}
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// Draw labels for the input to the processor and the processor to the right of
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// the test rect. The input label appears above the processor label.
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SkFont labelFont;
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labelFont.setTypeface(ToolUtils::create_portable_typeface());
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labelFont.setEdging(SkFont::Edging::kAntiAlias);
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labelFont.setSize(10.f);
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SkPaint labelPaint;
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labelPaint.setAntiAlias(true);
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SkString inputLabel("Input: ");
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if (paintType >= SK_ARRAY_COUNT(kPaintColors)) {
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inputLabel.append("gradient");
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} else {
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inputLabel.appendf("0x%08x", kPaintColors[paintType]);
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}
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SkString procLabel;
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procLabel.printf("Proc: [0x%08x]", kColors[procColor]);
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SkRect inputLabelBounds;
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// get the bounds of the text in order to position it
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labelFont.measureText(inputLabel.c_str(), inputLabel.size(),
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SkTextEncoding::kUTF8, &inputLabelBounds);
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canvas->drawString(inputLabel, renderRect.fRight + kPad, -inputLabelBounds.fTop,
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labelFont, labelPaint);
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// update the bounds to reflect the offset we used to draw it.
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inputLabelBounds.offset(renderRect.fRight + kPad, -inputLabelBounds.fTop);
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SkRect procLabelBounds;
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labelFont.measureText(procLabel.c_str(), procLabel.size(),
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SkTextEncoding::kUTF8, &procLabelBounds);
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canvas->drawString(procLabel, renderRect.fRight + kPad,
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inputLabelBounds.fBottom + 2.f - procLabelBounds.fTop,
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labelFont, labelPaint);
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procLabelBounds.offset(renderRect.fRight + kPad,
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inputLabelBounds.fBottom + 2.f - procLabelBounds.fTop);
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labelPaint.setStrokeWidth(0);
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labelPaint.setStyle(SkPaint::kStroke_Style);
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canvas->drawRect(renderRect, labelPaint);
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canvas->restore();
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// update x and y for the next test case.
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SkScalar height = renderRect.height();
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SkScalar width = std::max(inputLabelBounds.fRight, procLabelBounds.fRight);
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maxW = std::max(maxW, width);
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y += height + kPad;
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if (y + height > kHeight) {
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y = kPad;
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x += maxW + kPad;
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maxW = 0;
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}
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}
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}
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}
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private:
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// Use this as a way of generating an input FP
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sk_sp<SkShader> fShader;
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TestMode fMode;
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static constexpr SkScalar kPad = 10.f;
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static constexpr SkScalar kRectSize = 20.f;
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static constexpr int kWidth = 820;
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static constexpr int kHeight = 500;
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using INHERITED = GM;
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};
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DEF_GM(return new ColorProcessor{ColorProcessor::TestMode::kConstColor};)
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DEF_GM(return new ColorProcessor{ColorProcessor::TestMode::kModulateRGBA};)
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DEF_GM(return new ColorProcessor{ColorProcessor::TestMode::kModulateAlpha};)
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} // namespace skiagm
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