7fde8e1728
This almost gets gms to be iwyu clean. The last bit is around gm.cpp and the tracing framework and its use of atomic. Will also need a way of keeping things from regressing, which is difficult due to needing to do this outside-in. Change-Id: I1393531e99da8b0f1a29f55c53c86d53f459af7d Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211593 Reviewed-by: Herb Derby <herb@google.com> Commit-Queue: Ben Wagner <bungeman@google.com>
288 lines
10 KiB
C++
288 lines
10 KiB
C++
/*
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* Copyright 2016 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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#include "gm/gm.h"
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#include "include/core/SkBitmap.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/SkFontStyle.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/SkPoint3.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/SkTypeface.h"
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#include "src/core/SkNormalSource.h"
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#include "src/shaders/SkLightingShader.h"
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#include "src/shaders/SkLights.h"
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#include "tools/ToolUtils.h"
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#include <initializer_list>
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#include <utility>
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// Create a truncated pyramid normal map
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static SkBitmap make_frustum_normalmap(int texSize) {
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SkBitmap frustum;
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frustum.allocN32Pixels(texSize, texSize);
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ToolUtils::create_frustum_normal_map(&frustum, SkIRect::MakeWH(texSize, texSize));
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return frustum;
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}
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namespace skiagm {
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// This GM exercises lighting shaders. Specifically, nullptr arguments, scaling when using
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// normal maps, paint transparency, zero directional lights, multiple directional lights.
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class LightingShader2GM : public GM {
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public:
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LightingShader2GM() : fRect(SkRect::MakeIWH(kTexSize, kTexSize)) {
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this->setBGColor(ToolUtils::color_to_565(0xFF0000CC));
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}
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protected:
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SkString onShortName() override {
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return SkString("lightingshader2");
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}
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SkISize onISize() override {
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return SkISize::Make(600, 740);
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}
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void onOnceBeforeDraw() override {
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// The light direction is towards the light with +Z coming out of the screen
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const SkVector3 kLightFromUpperRight = SkVector3::Make(0.788f, 0.394f, 0.473f);
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const SkVector3 kLightFromUpperLeft = SkVector3::Make(-0.788f, 0.394f, 0.473f);
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// Standard set of lights
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{
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SkLights::Builder builder;
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builder.add(SkLights::Light::MakeDirectional(SkColor3f::Make(1.0f, 1.0f, 1.0f),
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kLightFromUpperRight));
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builder.setAmbientLightColor(SkColor3f::Make(0.2f, 0.2f, 0.2f));
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fLights = builder.finish();
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}
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// No directional lights
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{
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SkLights::Builder builder;
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builder.setAmbientLightColor(SkColor3f::Make(0.2f, 0.2f, 0.2f));
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fLightsNoDir = builder.finish();
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}
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// Two directional lights
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{
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SkLights::Builder builder;
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builder.add(SkLights::Light::MakeDirectional(SkColor3f::Make(1.0f, 0.0f, 0.0f),
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kLightFromUpperRight));
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builder.add(SkLights::Light::MakeDirectional(SkColor3f::Make(0.0f, 1.0f, 0.0f),
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kLightFromUpperLeft));
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builder.setAmbientLightColor(SkColor3f::Make(0.2f, 0.2f, 0.2f));
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fLightsTwoDir = builder.finish();
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}
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SkMatrix matrix;
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SkRect bitmapBounds = SkRect::MakeIWH(kTexSize, kTexSize);
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matrix.setRectToRect(bitmapBounds, fRect, SkMatrix::kFill_ScaleToFit);
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SkBitmap opaqueDiffuseMap = ToolUtils::create_checkerboard_bitmap(
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kTexSize, kTexSize, SK_ColorBLACK, 0xFF808080, 8);
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fOpaqueDiffuse = opaqueDiffuseMap.makeShader(&matrix);
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SkBitmap translucentDiffuseMap =
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ToolUtils::create_checkerboard_bitmap(kTexSize,
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kTexSize,
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SkColorSetARGB(0x55, 0x00, 0x00, 0x00),
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SkColorSetARGB(0x55, 0x80, 0x80, 0x80),
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8);
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fTranslucentDiffuse = translucentDiffuseMap.makeShader(&matrix);
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SkBitmap normalMap = make_frustum_normalmap(kTexSize);
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fNormalMapShader = normalMap.makeShader(&matrix);
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}
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// Scales shape around origin, rotates shape around origin, then translates shape to origin
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void positionCTM(SkCanvas *canvas, SkScalar scaleX, SkScalar scaleY, SkScalar rotate) const {
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canvas->translate(kTexSize/2.0f, kTexSize/2.0f);
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canvas->scale(scaleX, scaleY);
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canvas->rotate(rotate);
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canvas->translate(-kTexSize/2.0f, -kTexSize/2.0f);
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}
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void drawRect(SkCanvas* canvas, SkScalar scaleX, SkScalar scaleY,
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SkScalar rotate, bool useNormalSource, bool useDiffuseShader,
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bool useTranslucentPaint, bool useTranslucentShader, sk_sp<SkLights> lights) {
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canvas->save();
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this->positionCTM(canvas, scaleX, scaleY, rotate);
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const SkMatrix& ctm = canvas->getTotalMatrix();
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SkPaint paint;
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sk_sp<SkNormalSource> normalSource = nullptr;
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sk_sp<SkShader> diffuseShader = nullptr;
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if (useNormalSource) {
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normalSource = SkNormalSource::MakeFromNormalMap(fNormalMapShader, ctm);
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}
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if (useDiffuseShader) {
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diffuseShader = (useTranslucentShader) ? fTranslucentDiffuse : fOpaqueDiffuse;
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} else {
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paint.setColor(SK_ColorGREEN);
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}
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if (useTranslucentPaint) {
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paint.setAlpha(0x99);
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}
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paint.setShader(SkLightingShader::Make(std::move(diffuseShader), std::move(normalSource),
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std::move(lights)));
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canvas->drawRect(fRect, paint);
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canvas->restore();
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}
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void onDraw(SkCanvas* canvas) override {
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SkPaint labelPaint;
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SkFont font(ToolUtils::create_portable_typeface("sans-serif", SkFontStyle()), kLabelSize);
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int gridNum = 0;
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// Running through all possible bool parameter combinations
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for (bool useNormalSource : {true, false}) {
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for (bool useDiffuseShader : {true, false}) {
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for (bool useTranslucentPaint : {true, false}) {
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for (bool useTranslucentShader : {true, false}) {
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// Determining position
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SkScalar xPos = (gridNum % kGridColumnNum) * kGridCellWidth;
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SkScalar yPos = (gridNum / kGridColumnNum) * kGridCellWidth;
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canvas->save();
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canvas->translate(xPos, yPos);
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this->drawRect(canvas, 1.0f, 1.0f, 0.f, useNormalSource, useDiffuseShader,
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useTranslucentPaint, useTranslucentShader, fLights);
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// Drawing labels
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canvas->translate(0.0f, SkIntToScalar(kTexSize));
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{
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canvas->translate(0.0f, kLabelSize);
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SkString label;
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label.appendf("useNormalSource: %d", useNormalSource);
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canvas->drawString(label, 0.0f, 0.0f, font, labelPaint);
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}
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{
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canvas->translate(0.0f, kLabelSize);
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SkString label;
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label.appendf("useDiffuseShader: %d", useDiffuseShader);
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canvas->drawString(label, 0.0f, 0.0f, font, labelPaint);
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}
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{
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canvas->translate(0.0f, kLabelSize);
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SkString label;
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label.appendf("useTranslucentPaint: %d", useTranslucentPaint);
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canvas->drawString(label, 0.0f, 0.0f, font, labelPaint);
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}
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{
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canvas->translate(0.0f, kLabelSize);
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SkString label;
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label.appendf("useTranslucentShader: %d", useTranslucentShader);
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canvas->drawString(label, 0.0f, 0.0f, font, labelPaint);
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}
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canvas->restore();
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gridNum++;
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}
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}
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}
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}
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// Rotation/scale test
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{
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SkScalar xPos = (gridNum % kGridColumnNum) * kGridCellWidth;
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SkScalar yPos = (gridNum / kGridColumnNum) * kGridCellWidth;
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canvas->save();
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canvas->translate(xPos, yPos);
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this->drawRect(canvas, 0.6f, 0.6f, 45.0f, true, true, true, true, fLights);
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canvas->restore();
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gridNum++;
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}
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// Anisotropic scale test
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{
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SkScalar xPos = (gridNum % kGridColumnNum) * kGridCellWidth;
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SkScalar yPos = (gridNum / kGridColumnNum) * kGridCellWidth;
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canvas->save();
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canvas->translate(xPos, yPos);
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this->drawRect(canvas, 0.6f, 0.4f, 30.0f, true, true, true, true, fLights);
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canvas->restore();
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gridNum++;
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}
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// No directional lights test
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{
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SkScalar xPos = (gridNum % kGridColumnNum) * kGridCellWidth;
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SkScalar yPos = (gridNum / kGridColumnNum) * kGridCellWidth;
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canvas->save();
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canvas->translate(xPos, yPos);
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this->drawRect(canvas, 1.0f, 1.0f, 0.0f, true, true, false, false, fLightsNoDir);
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canvas->restore();
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gridNum++;
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}
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// Two directional lights test
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{
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SkScalar xPos = (gridNum % kGridColumnNum) * kGridCellWidth;
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SkScalar yPos = (gridNum / kGridColumnNum) * kGridCellWidth;
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canvas->save();
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canvas->translate(xPos, yPos);
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this->drawRect(canvas, 1.0f, 1.0f, 0.0f, true, true, false, false, fLightsTwoDir);
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canvas->restore();
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gridNum++;
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}
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}
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private:
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static constexpr int kTexSize = 96;
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static constexpr int kNumBooleanParams = 4;
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static constexpr SkScalar kLabelSize = 10.0f;
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static constexpr int kGridColumnNum = 4;
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static constexpr SkScalar kGridCellWidth = kTexSize + 20.0f + kNumBooleanParams * kLabelSize;
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sk_sp<SkShader> fOpaqueDiffuse;
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sk_sp<SkShader> fTranslucentDiffuse;
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sk_sp<SkShader> fNormalMapShader;
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const SkRect fRect;
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sk_sp<SkLights> fLights;
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sk_sp<SkLights> fLightsNoDir;
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sk_sp<SkLights> fLightsTwoDir;
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return new LightingShader2GM;)
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}
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