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- /*
- * Copyright 2019 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- // This test only works with the GPU backend.
- #include "gm/gm.h"
- #include "include/core/SkBitmap.h"
- #include "include/core/SkBlendMode.h"
- #include "include/core/SkCanvas.h"
- #include "include/core/SkColor.h"
- #include "include/core/SkColorFilter.h"
- #include "include/core/SkData.h"
- #include "include/core/SkFilterQuality.h"
- #include "include/core/SkFont.h"
- #include "include/core/SkImage.h"
- #include "include/core/SkImageFilter.h"
- #include "include/core/SkImageInfo.h"
- #include "include/core/SkMaskFilter.h"
- #include "include/core/SkMatrix.h"
- #include "include/core/SkPaint.h"
- #include "include/core/SkPoint.h"
- #include "include/core/SkRect.h"
- #include "include/core/SkRefCnt.h"
- #include "include/core/SkScalar.h"
- #include "include/core/SkShader.h"
- #include "include/core/SkSize.h"
- #include "include/core/SkString.h"
- #include "include/core/SkTileMode.h"
- #include "include/core/SkTypeface.h"
- #include "include/core/SkTypes.h"
- #include "include/effects/SkColorMatrix.h"
- #include "include/effects/SkGradientShader.h"
- #include "include/effects/SkMorphologyImageFilter.h"
- #include "include/effects/SkShaderMaskFilter.h"
- #include "include/private/SkTArray.h"
- #include "src/core/SkLineClipper.h"
- #include "tools/Resources.h"
- #include "tools/gpu/YUVUtils.h"
- #include <array>
- #include <memory>
- #include <utility>
- // This GM mimics the draw calls used by complex compositors that focus on drawing rectangles
- // and quadrilaterals with per-edge AA, with complex images, effects, and seamless tiling.
- // It will be updated to reflect the patterns seen in Chromium's SkiaRenderer. It is currently
- // restricted to adding draw ops directly in Ganesh since there is no fully-specified public API.
- static constexpr SkScalar kTileWidth = 40;
- static constexpr SkScalar kTileHeight = 30;
- static constexpr int kRowCount = 4;
- static constexpr int kColCount = 3;
- // To mimic Chromium's BSP clipping strategy, a set of three lines formed by triangle edges
- // of the below points are used to clip against the regular tile grid. The tile grid occupies
- // a 120 x 120 rectangle (40px * 3 cols by 30px * 4 rows).
- static constexpr SkPoint kClipP1 = {1.75f * kTileWidth, 0.8f * kTileHeight};
- static constexpr SkPoint kClipP2 = {0.6f * kTileWidth, 2.f * kTileHeight};
- static constexpr SkPoint kClipP3 = {2.9f * kTileWidth, 3.5f * kTileHeight};
- ///////////////////////////////////////////////////////////////////////////////////////////////
- // Utilities for operating on lines and tiles
- ///////////////////////////////////////////////////////////////////////////////////////////////
- // p0 and p1 form a segment contained the tile grid, so extends them by a large enough margin
- // that the output points stored in 'line' are outside the tile grid (thus effectively infinite).
- static void clipping_line_segment(const SkPoint& p0, const SkPoint& p1, SkPoint line[2]) {
- SkVector v = p1 - p0;
- // 10f was chosen as a balance between large enough to scale the currently set clip
- // points outside of the tile grid, but small enough to preserve precision.
- line[0] = p0 - v * 10.f;
- line[1] = p1 + v * 10.f;
- }
- // Returns true if line segment (p0-p1) intersects with line segment (l0-l1); if true is returned,
- // the intersection point is stored in 'intersect'.
- static bool intersect_line_segments(const SkPoint& p0, const SkPoint& p1,
- const SkPoint& l0, const SkPoint& l1, SkPoint* intersect) {
- static constexpr SkScalar kHorizontalTolerance = 0.01f; // Pretty conservative
- // Use doubles for accuracy, since the clipping strategy used below can create T
- // junctions, and lower precision could artificially create gaps
- double pY = (double) p1.fY - (double) p0.fY;
- double pX = (double) p1.fX - (double) p0.fX;
- double lY = (double) l1.fY - (double) l0.fY;
- double lX = (double) l1.fX - (double) l0.fX;
- double plY = (double) p0.fY - (double) l0.fY;
- double plX = (double) p0.fX - (double) l0.fX;
- if (SkScalarNearlyZero(pY, kHorizontalTolerance)) {
- if (SkScalarNearlyZero(lY, kHorizontalTolerance)) {
- // Two horizontal lines
- return false;
- } else {
- // Recalculate but swap p and l
- return intersect_line_segments(l0, l1, p0, p1, intersect);
- }
- }
- // Up to now, the line segments do not form an invalid intersection
- double lNumerator = plX * pY - plY * pX;
- double lDenom = lX * pY - lY * pX;
- if (SkScalarNearlyZero(lDenom)) {
- // Parallel or identical
- return false;
- }
- // Calculate alphaL that provides the intersection point along (l0-l1), e.g. l0+alphaL*(l1-l0)
- double alphaL = lNumerator / lDenom;
- if (alphaL < 0.0 || alphaL > 1.0) {
- // Outside of the l segment
- return false;
- }
- // Calculate alphaP from the valid alphaL (since it could be outside p segment)
- // double alphaP = (alphaL * l.fY - pl.fY) / p.fY;
- double alphaP = (alphaL * lY - plY) / pY;
- if (alphaP < 0.0 || alphaP > 1.0) {
- // Outside of p segment
- return false;
- }
- // Is valid, so calculate the actual intersection point
- *intersect = l1 * SkScalar(alphaL) + l0 * SkScalar(1.0 - alphaL);
- return true;
- }
- // Draw a line through the two points, outset by a fixed length in screen space
- static void draw_outset_line(SkCanvas* canvas, const SkMatrix& local, const SkPoint pts[2],
- const SkPaint& paint) {
- static constexpr SkScalar kLineOutset = 10.f;
- SkPoint mapped[2];
- local.mapPoints(mapped, pts, 2);
- SkVector v = mapped[1] - mapped[0];
- v.setLength(v.length() + kLineOutset);
- canvas->drawLine(mapped[1] - v, mapped[0] + v, paint);
- }
- // Draw grid of red lines at interior tile boundaries.
- static void draw_tile_boundaries(SkCanvas* canvas, const SkMatrix& local) {
- SkPaint paint;
- paint.setAntiAlias(true);
- paint.setColor(SK_ColorRED);
- paint.setStyle(SkPaint::kStroke_Style);
- paint.setStrokeWidth(0.f);
- for (int x = 1; x < kColCount; ++x) {
- SkPoint pts[] = {{x * kTileWidth, 0}, {x * kTileWidth, kRowCount * kTileHeight}};
- draw_outset_line(canvas, local, pts, paint);
- }
- for (int y = 1; y < kRowCount; ++y) {
- SkPoint pts[] = {{0, y * kTileHeight}, {kTileWidth * kColCount, y * kTileHeight}};
- draw_outset_line(canvas, local, pts, paint);
- }
- }
- // Draw the arbitrary clipping/split boundaries that intersect the tile grid as green lines
- static void draw_clipping_boundaries(SkCanvas* canvas, const SkMatrix& local) {
- SkPaint paint;
- paint.setAntiAlias(true);
- paint.setColor(SK_ColorGREEN);
- paint.setStyle(SkPaint::kStroke_Style);
- paint.setStrokeWidth(0.f);
- // Clip the "infinite" line segments to a rectangular region outside the tile grid
- SkRect border = SkRect::MakeWH(kTileWidth * kColCount, kTileHeight * kRowCount);
- // Draw p1 to p2
- SkPoint line[2];
- SkPoint clippedLine[2];
- clipping_line_segment(kClipP1, kClipP2, line);
- SkAssertResult(SkLineClipper::IntersectLine(line, border, clippedLine));
- draw_outset_line(canvas, local, clippedLine, paint);
- // Draw p2 to p3
- clipping_line_segment(kClipP2, kClipP3, line);
- SkAssertResult(SkLineClipper::IntersectLine(line, border, clippedLine));
- draw_outset_line(canvas, local, clippedLine, paint);
- // Draw p3 to p1
- clipping_line_segment(kClipP3, kClipP1, line);
- SkAssertResult(SkLineClipper::IntersectLine(line, border, clippedLine));
- draw_outset_line(canvas, local, clippedLine, paint);
- }
- static void draw_text(SkCanvas* canvas, const char* text) {
- canvas->drawString(text, 0, 0, SkFont(nullptr, 12), SkPaint());
- }
- /////////////////////////////////////////////////////////////////////////////////////////////////
- // Abstraction for rendering a possibly clipped tile, that can apply different effects to mimic
- // the Chromium quad types, and a generic GM template to arrange renderers x transforms in a grid
- /////////////////////////////////////////////////////////////////////////////////////////////////
- class ClipTileRenderer : public SkRefCntBase {
- public:
- virtual ~ClipTileRenderer() {}
- // Draw the base rect, possibly clipped by 'clip' if that is not null. The edges to antialias
- // are specified in 'edgeAA' (to make manipulation easier than an unsigned bitfield). 'tileID'
- // represents the location of rect within the tile grid, 'quadID' is the unique ID of the clip
- // region within the tile (reset for each tile).
- //
- // The edgeAA order matches that of clip, so it refers to top, right, bottom, left.
- // Return draw count
- virtual int drawTile(SkCanvas* canvas, const SkRect& rect, const SkPoint clip[4],
- const bool edgeAA[4], int tileID, int quadID) = 0;
- virtual void drawBanner(SkCanvas* canvas) = 0;
- // Return draw count
- virtual int drawTiles(SkCanvas* canvas) {
- // All three lines in a list
- SkPoint lines[6];
- clipping_line_segment(kClipP1, kClipP2, lines);
- clipping_line_segment(kClipP2, kClipP3, lines + 2);
- clipping_line_segment(kClipP3, kClipP1, lines + 4);
- bool edgeAA[4];
- int tileID = 0;
- int drawCount = 0;
- for (int i = 0; i < kRowCount; ++i) {
- for (int j = 0; j < kColCount; ++j) {
- // The unclipped tile geometry
- SkRect tile = SkRect::MakeXYWH(j * kTileWidth, i * kTileHeight,
- kTileWidth, kTileHeight);
- // Base edge AA flags if there are no clips; clipped lines will only turn off edges
- edgeAA[0] = i == 0; // Top
- edgeAA[1] = j == kColCount - 1; // Right
- edgeAA[2] = i == kRowCount - 1; // Bottom
- edgeAA[3] = j == 0; // Left
- // Now clip against the 3 lines formed by kClipPx and split into general purpose
- // quads as needed.
- int quadCount = 0;
- drawCount += this->clipTile(canvas, tileID, tile, nullptr, edgeAA, lines, 3,
- &quadCount);
- tileID++;
- }
- }
- return drawCount;
- }
- protected:
- SkCanvas::QuadAAFlags maskToFlags(const bool edgeAA[4]) const {
- unsigned flags = (edgeAA[0] * SkCanvas::kTop_QuadAAFlag) |
- (edgeAA[1] * SkCanvas::kRight_QuadAAFlag) |
- (edgeAA[2] * SkCanvas::kBottom_QuadAAFlag) |
- (edgeAA[3] * SkCanvas::kLeft_QuadAAFlag);
- return static_cast<SkCanvas::QuadAAFlags>(flags);
- }
- // Recursively splits the quadrilateral against the segments stored in 'lines', which must be
- // 2 * lineCount long. Increments 'quadCount' for each split quadrilateral, and invokes the
- // drawTile at leaves.
- int clipTile(SkCanvas* canvas, int tileID, const SkRect& baseRect, const SkPoint quad[4],
- const bool edgeAA[4], const SkPoint lines[], int lineCount, int* quadCount) {
- if (lineCount == 0) {
- // No lines, so end recursion by drawing the tile. If the tile was never split then
- // 'quad' remains null so that drawTile() can differentiate how it should draw.
- int draws = this->drawTile(canvas, baseRect, quad, edgeAA, tileID, *quadCount);
- *quadCount = *quadCount + 1;
- return draws;
- }
- static constexpr int kTL = 0; // Top-left point index in points array
- static constexpr int kTR = 1; // Top-right point index in points array
- static constexpr int kBR = 2; // Bottom-right point index in points array
- static constexpr int kBL = 3; // Bottom-left point index in points array
- static constexpr int kS0 = 4; // First split point index in points array
- static constexpr int kS1 = 5; // Second split point index in points array
- SkPoint points[6];
- if (quad) {
- // Copy the original 4 points into set of points to consider
- for (int i = 0; i < 4; ++i) {
- points[i] = quad[i];
- }
- } else {
- // Haven't been split yet, so fill in based on the rect
- baseRect.toQuad(points);
- }
- // Consider the first line against the 4 quad edges in tile, which should have 0,1, or 2
- // intersection points since the tile is convex.
- int splitIndices[2]; // Edge that was intersected
- int intersectionCount = 0;
- for (int i = 0; i < 4; ++i) {
- SkPoint intersect;
- if (intersect_line_segments(points[i], points[i == 3 ? 0 : i + 1],
- lines[0], lines[1], &intersect)) {
- // If the intersected point is the same as the last found intersection, the line
- // runs through a vertex, so don't double count it
- bool duplicate = false;
- for (int j = 0; j < intersectionCount; ++j) {
- if (SkScalarNearlyZero((intersect - points[kS0 + j]).length())) {
- duplicate = true;
- break;
- }
- }
- if (!duplicate) {
- points[kS0 + intersectionCount] = intersect;
- splitIndices[intersectionCount] = i;
- intersectionCount++;
- }
- }
- }
- if (intersectionCount < 2) {
- // Either the first line never intersected the quad (count == 0), or it intersected at a
- // single vertex without going through quad area (count == 1), so check next line
- return this->clipTile(
- canvas, tileID, baseRect, quad, edgeAA, lines + 2, lineCount - 1, quadCount);
- }
- SkASSERT(intersectionCount == 2);
- // Split the tile points into 2+ sub quads and recurse to the next lines, which may or may
- // not further split the tile. Since the configurations are relatively simple, the possible
- // splits are hardcoded below; subtile quad orderings are such that the sub tiles remain in
- // clockwise order and match expected edges for QuadAAFlags. subtile indices refer to the
- // 6-element 'points' array.
- SkSTArray<3, std::array<int, 4>> subtiles;
- int s2 = -1; // Index of an original vertex chosen for a artificial split
- if (splitIndices[1] - splitIndices[0] == 2) {
- // Opposite edges, so the split trivially forms 2 sub quads
- if (splitIndices[0] == 0) {
- subtiles.push_back({{kTL, kS0, kS1, kBL}});
- subtiles.push_back({{kS0, kTR, kBR, kS1}});
- } else {
- subtiles.push_back({{kTL, kTR, kS0, kS1}});
- subtiles.push_back({{kS1, kS0, kBR, kBL}});
- }
- } else {
- // Adjacent edges, which makes for a more complicated split, since it forms a degenerate
- // quad (triangle) and a pentagon that must be artificially split. The pentagon is split
- // using one of the original vertices (remembered in 's2'), which adds an additional
- // degenerate quad, but ensures there are no T-junctions.
- switch(splitIndices[0]) {
- case 0:
- // Could be connected to edge 1 or edge 3
- if (splitIndices[1] == 1) {
- s2 = kBL;
- subtiles.push_back({{kS0, kTR, kS1, kS0}}); // degenerate
- subtiles.push_back({{kTL, kS0, edgeAA[0] ? kS0 : kBL, kBL}}); // degenerate
- subtiles.push_back({{kS0, kS1, kBR, kBL}});
- } else {
- SkASSERT(splitIndices[1] == 3);
- s2 = kBR;
- subtiles.push_back({{kTL, kS0, kS1, kS1}}); // degenerate
- subtiles.push_back({{kS1, edgeAA[3] ? kS1 : kBR, kBR, kBL}}); // degenerate
- subtiles.push_back({{kS0, kTR, kBR, kS1}});
- }
- break;
- case 1:
- // Edge 0 handled above, should only be connected to edge 2
- SkASSERT(splitIndices[1] == 2);
- s2 = kTL;
- subtiles.push_back({{kS0, kS0, kBR, kS1}}); // degenerate
- subtiles.push_back({{kTL, kTR, kS0, edgeAA[1] ? kS0 : kTL}}); // degenerate
- subtiles.push_back({{kTL, kS0, kS1, kBL}});
- break;
- case 2:
- // Edge 1 handled above, should only be connected to edge 3
- SkASSERT(splitIndices[1] == 3);
- s2 = kTR;
- subtiles.push_back({{kS1, kS0, kS0, kBL}}); // degenerate
- subtiles.push_back({{edgeAA[2] ? kS0 : kTR, kTR, kBR, kS0}}); // degenerate
- subtiles.push_back({{kTL, kTR, kS0, kS1}});
- break;
- case 3:
- // Fall through, an adjacent edge split that hits edge 3 should have first found
- // been found with edge 0 or edge 2 for the other end
- default:
- SkASSERT(false);
- return 0;
- }
- }
- SkPoint sub[4];
- bool subAA[4];
- int draws = 0;
- for (int i = 0; i < subtiles.count(); ++i) {
- // Fill in the quad points and update edge AA rules for new interior edges
- for (int j = 0; j < 4; ++j) {
- int p = subtiles[i][j];
- sub[j] = points[p];
- int np = j == 3 ? subtiles[i][0] : subtiles[i][j + 1];
- // The "new" edges are the edges that connect between the two split points or
- // between a split point and the chosen s2 point. Otherwise the edge remains aligned
- // with the original shape, so should preserve the AA setting.
- if ((p >= kS0 && (np == s2 || np >= kS0)) ||
- ((np >= kS0) && (p == s2 || p >= kS0))) {
- // New edge
- subAA[j] = false;
- } else {
- // The subtiles indices were arranged so that their edge ordering was still top,
- // right, bottom, left so 'j' can be used to access edgeAA
- subAA[j] = edgeAA[j];
- }
- }
- // Split the sub quad with the next line
- draws += this->clipTile(canvas, tileID, baseRect, sub, subAA, lines + 2, lineCount - 1,
- quadCount);
- }
- return draws;
- }
- };
- static constexpr int kMatrixCount = 5;
- class CompositorGM : public skiagm::GM {
- public:
- CompositorGM(const char* name, sk_sp<ClipTileRenderer> renderer)
- : fName(name) {
- fRenderers.push_back(std::move(renderer));
- }
- CompositorGM(const char* name, const SkTArray<sk_sp<ClipTileRenderer>> renderers)
- : fRenderers(renderers)
- , fName(name) {}
- protected:
- SkISize onISize() override {
- // The GM draws a grid of renderers (rows) x transforms (col). Within each cell, the
- // renderer draws the transformed tile grid, which is approximately
- // (kColCount*kTileWidth, kRowCount*kTileHeight), although it has additional line
- // visualizations and can be transformed outside of those rectangular bounds (i.e. persp),
- // so pad the cell dimensions to be conservative. Must also account for the banner text.
- static constexpr SkScalar kCellWidth = 1.3f * kColCount * kTileWidth;
- static constexpr SkScalar kCellHeight = 1.3f * kRowCount * kTileHeight;
- return SkISize::Make(SkScalarRoundToInt(kCellWidth * kMatrixCount + 175.f),
- SkScalarRoundToInt(kCellHeight * fRenderers.count() + 75.f));
- }
- SkString onShortName() override {
- SkString fullName;
- fullName.appendf("compositor_quads_%s", fName.c_str());
- return fullName;
- }
- void onOnceBeforeDraw() override {
- this->configureMatrices();
- }
- void onDraw(SkCanvas* canvas) override {
- static constexpr SkScalar kGap = 40.f;
- static constexpr SkScalar kBannerWidth = 120.f;
- static constexpr SkScalar kOffset = 15.f;
- SkTArray<int> drawCounts(fRenderers.count());
- drawCounts.push_back_n(fRenderers.count(), 0);
- canvas->save();
- canvas->translate(kOffset + kBannerWidth, kOffset);
- for (int i = 0; i < fMatrices.count(); ++i) {
- canvas->save();
- draw_text(canvas, fMatrixNames[i].c_str());
- canvas->translate(0.f, kGap);
- for (int j = 0; j < fRenderers.count(); ++j) {
- canvas->save();
- draw_tile_boundaries(canvas, fMatrices[i]);
- draw_clipping_boundaries(canvas, fMatrices[i]);
- canvas->concat(fMatrices[i]);
- drawCounts[j] += fRenderers[j]->drawTiles(canvas);
- canvas->restore();
- // And advance to the next row
- canvas->translate(0.f, kGap + kRowCount * kTileHeight);
- }
- // Reset back to the left edge
- canvas->restore();
- // And advance to the next column
- canvas->translate(kGap + kColCount * kTileWidth, 0.f);
- }
- canvas->restore();
- // Print a row header, with total draw counts
- canvas->save();
- canvas->translate(kOffset, kGap + 0.5f * kRowCount * kTileHeight);
- for (int j = 0; j < fRenderers.count(); ++j) {
- fRenderers[j]->drawBanner(canvas);
- canvas->translate(0.f, 15.f);
- draw_text(canvas, SkStringPrintf("Draws = %d", drawCounts[j]).c_str());
- canvas->translate(0.f, kGap + kRowCount * kTileHeight);
- }
- canvas->restore();
- }
- private:
- SkTArray<sk_sp<ClipTileRenderer>> fRenderers;
- SkTArray<SkMatrix> fMatrices;
- SkTArray<SkString> fMatrixNames;
- SkString fName;
- void configureMatrices() {
- fMatrices.reset();
- fMatrixNames.reset();
- fMatrices.push_back_n(kMatrixCount);
- // Identity
- fMatrices[0].setIdentity();
- fMatrixNames.push_back(SkString("Identity"));
- // Translate/scale
- fMatrices[1].setTranslate(5.5f, 20.25f);
- fMatrices[1].postScale(.9f, .7f);
- fMatrixNames.push_back(SkString("T+S"));
- // Rotation
- fMatrices[2].setRotate(20.0f);
- fMatrices[2].preTranslate(15.f, -20.f);
- fMatrixNames.push_back(SkString("Rotate"));
- // Skew
- fMatrices[3].setSkew(.5f, .25f);
- fMatrices[3].preTranslate(-30.f, 0.f);
- fMatrixNames.push_back(SkString("Skew"));
- // Perspective
- SkPoint src[4];
- SkRect::MakeWH(kColCount * kTileWidth, kRowCount * kTileHeight).toQuad(src);
- SkPoint dst[4] = {{0, 0},
- {kColCount * kTileWidth + 10.f, 15.f},
- {kColCount * kTileWidth - 28.f, kRowCount * kTileHeight + 40.f},
- {25.f, kRowCount * kTileHeight - 15.f}};
- SkAssertResult(fMatrices[4].setPolyToPoly(src, dst, 4));
- fMatrices[4].preTranslate(0.f, 10.f);
- fMatrixNames.push_back(SkString("Perspective"));
- SkASSERT(fMatrices.count() == fMatrixNames.count());
- }
- typedef skiagm::GM INHERITED;
- };
- ////////////////////////////////////////////////////////////////////////////////////////////////
- // Implementations of TileRenderer that color the clipped tiles in various ways
- ////////////////////////////////////////////////////////////////////////////////////////////////
- class DebugTileRenderer : public ClipTileRenderer {
- public:
- static sk_sp<ClipTileRenderer> Make() {
- // Since aa override is disabled, the quad flags arg doesn't matter.
- return sk_sp<ClipTileRenderer>(new DebugTileRenderer(SkCanvas::kAll_QuadAAFlags, false));
- }
- static sk_sp<ClipTileRenderer> MakeAA() {
- return sk_sp<ClipTileRenderer>(new DebugTileRenderer(SkCanvas::kAll_QuadAAFlags, true));
- }
- static sk_sp<ClipTileRenderer> MakeNonAA() {
- return sk_sp<ClipTileRenderer>(new DebugTileRenderer(SkCanvas::kNone_QuadAAFlags, true));
- }
- int drawTile(SkCanvas* canvas, const SkRect& rect, const SkPoint clip[4], const bool edgeAA[4],
- int tileID, int quadID) override {
- // Colorize the tile based on its grid position and quad ID
- int i = tileID / kColCount;
- int j = tileID % kColCount;
- SkColor4f c = {(i + 1.f) / kRowCount, (j + 1.f) / kColCount, .4f, 1.f};
- float alpha = quadID / 10.f;
- c.fR = c.fR * (1 - alpha) + alpha;
- c.fG = c.fG * (1 - alpha) + alpha;
- c.fB = c.fB * (1 - alpha) + alpha;
- c.fA = c.fA * (1 - alpha) + alpha;
- SkCanvas::QuadAAFlags aaFlags = fEnableAAOverride ? fAAOverride : this->maskToFlags(edgeAA);
- canvas->experimental_DrawEdgeAAQuad(
- rect, clip, aaFlags, c.toSkColor(), SkBlendMode::kSrcOver);
- return 1;
- }
- void drawBanner(SkCanvas* canvas) override {
- draw_text(canvas, "Edge AA");
- canvas->translate(0.f, 15.f);
- SkString config;
- static const char* kFormat = "Ext(%s) - Int(%s)";
- if (fEnableAAOverride) {
- SkASSERT(fAAOverride == SkCanvas::kAll_QuadAAFlags ||
- fAAOverride == SkCanvas::kNone_QuadAAFlags);
- if (fAAOverride == SkCanvas::kAll_QuadAAFlags) {
- config.appendf(kFormat, "yes", "yes");
- } else {
- config.appendf(kFormat, "no", "no");
- }
- } else {
- config.appendf(kFormat, "yes", "no");
- }
- draw_text(canvas, config.c_str());
- }
- private:
- SkCanvas::QuadAAFlags fAAOverride;
- bool fEnableAAOverride;
- DebugTileRenderer(SkCanvas::QuadAAFlags aa, bool enableAAOverrde)
- : fAAOverride(aa)
- , fEnableAAOverride(enableAAOverrde) {}
- typedef ClipTileRenderer INHERITED;
- };
- // Tests tmp_drawEdgeAAQuad
- class SolidColorRenderer : public ClipTileRenderer {
- public:
- static sk_sp<ClipTileRenderer> Make(const SkColor4f& color) {
- return sk_sp<ClipTileRenderer>(new SolidColorRenderer(color));
- }
- int drawTile(SkCanvas* canvas, const SkRect& rect, const SkPoint clip[4], const bool edgeAA[4],
- int tileID, int quadID) override {
- canvas->experimental_DrawEdgeAAQuad(rect, clip, this->maskToFlags(edgeAA),
- fColor.toSkColor(), SkBlendMode::kSrcOver);
- return 1;
- }
- void drawBanner(SkCanvas* canvas) override {
- draw_text(canvas, "Solid Color");
- }
- private:
- SkColor4f fColor;
- SolidColorRenderer(const SkColor4f& color) : fColor(color) {}
- typedef ClipTileRenderer INHERITED;
- };
- // Tests drawEdgeAAImageSet(), but can batch the entries together in different ways
- class TextureSetRenderer : public ClipTileRenderer {
- public:
- static sk_sp<ClipTileRenderer> MakeUnbatched(sk_sp<SkImage> image) {
- return Make("Texture", "", std::move(image), nullptr, nullptr, nullptr, nullptr,
- 1.f, true, 0);
- }
- static sk_sp<ClipTileRenderer> MakeBatched(sk_sp<SkImage> image, int transformCount) {
- const char* subtitle = transformCount == 0 ? "" : "w/ xforms";
- return Make("Texture Set", subtitle, std::move(image), nullptr, nullptr, nullptr, nullptr,
- 1.f, false, transformCount);
- }
- static sk_sp<ClipTileRenderer> MakeShader(const char* name, sk_sp<SkImage> image,
- sk_sp<SkShader> shader, bool local) {
- return Make("Shader", name, std::move(image), std::move(shader),
- nullptr, nullptr, nullptr, 1.f, local, 0);
- }
- static sk_sp<ClipTileRenderer> MakeColorFilter(const char* name, sk_sp<SkImage> image,
- sk_sp<SkColorFilter> filter) {
- return Make("Color Filter", name, std::move(image), nullptr, std::move(filter), nullptr,
- nullptr, 1.f, false, 0);
- }
- static sk_sp<ClipTileRenderer> MakeImageFilter(const char* name, sk_sp<SkImage> image,
- sk_sp<SkImageFilter> filter) {
- return Make("Image Filter", name, std::move(image), nullptr, nullptr, std::move(filter),
- nullptr, 1.f, false, 0);
- }
- static sk_sp<ClipTileRenderer> MakeMaskFilter(const char* name, sk_sp<SkImage> image,
- sk_sp<SkMaskFilter> filter) {
- return Make("Mask Filter", name, std::move(image), nullptr, nullptr, nullptr,
- std::move(filter), 1.f, false, 0);
- }
- static sk_sp<ClipTileRenderer> MakeAlpha(sk_sp<SkImage> image, SkScalar alpha) {
- return Make("Alpha", SkStringPrintf("a = %.2f", alpha).c_str(), std::move(image), nullptr,
- nullptr, nullptr, nullptr, alpha, false, 0);
- }
- static sk_sp<ClipTileRenderer> Make(const char* topBanner, const char* bottomBanner,
- sk_sp<SkImage> image, sk_sp<SkShader> shader,
- sk_sp<SkColorFilter> colorFilter,
- sk_sp<SkImageFilter> imageFilter,
- sk_sp<SkMaskFilter> maskFilter, SkScalar paintAlpha,
- bool resetAfterEachQuad, int transformCount) {
- return sk_sp<ClipTileRenderer>(new TextureSetRenderer(topBanner, bottomBanner,
- std::move(image), std::move(shader), std::move(colorFilter), std::move(imageFilter),
- std::move(maskFilter), paintAlpha, resetAfterEachQuad, transformCount));
- }
- int drawTiles(SkCanvas* canvas) override {
- int draws = this->INHERITED::drawTiles(canvas);
- // Push the last tile set
- draws += this->drawAndReset(canvas);
- return draws;
- }
- int drawTile(SkCanvas* canvas, const SkRect& rect, const SkPoint clip[4], const bool edgeAA[4],
- int tileID, int quadID) override {
- // Now don't actually draw the tile, accumulate it in the growing entry set
- bool hasClip = false;
- if (clip) {
- // Record the four points into fDstClips
- fDstClips.push_back_n(4, clip);
- hasClip = true;
- }
- int matrixIdx = -1;
- if (!fResetEachQuad && fTransformBatchCount > 0) {
- // Handle transform batching. This works by capturing the CTM of the first tile draw,
- // and then calculate the difference between that and future CTMs for later tiles.
- if (fPreViewMatrices.count() == 0) {
- fBaseCTM = canvas->getTotalMatrix();
- fPreViewMatrices.push_back(SkMatrix::I());
- matrixIdx = 0;
- } else {
- // Calculate matrix s.t. getTotalMatrix() = fBaseCTM * M
- SkMatrix invBase;
- if (!fBaseCTM.invert(&invBase)) {
- SkDebugf("Cannot invert CTM, transform batching will not be correct.\n");
- } else {
- SkMatrix preView = SkMatrix::Concat(invBase, canvas->getTotalMatrix());
- if (preView != fPreViewMatrices[fPreViewMatrices.count() - 1]) {
- // Add the new matrix
- fPreViewMatrices.push_back(preView);
- } // else re-use the last matrix
- matrixIdx = fPreViewMatrices.count() - 1;
- }
- }
- }
- // This acts like the whole image is rendered over the entire tile grid, so derive local
- // coordinates from 'rect', based on the grid to image transform.
- SkMatrix gridToImage = SkMatrix::MakeRectToRect(SkRect::MakeWH(kColCount * kTileWidth,
- kRowCount * kTileHeight),
- SkRect::MakeWH(fImage->width(),
- fImage->height()),
- SkMatrix::kFill_ScaleToFit);
- SkRect localRect = gridToImage.mapRect(rect);
- // drawTextureSet automatically derives appropriate local quad from localRect if clipPtr
- // is not null.
- fSetEntries.push_back(
- {fImage, localRect, rect, matrixIdx, 1.f, this->maskToFlags(edgeAA), hasClip});
- if (fResetEachQuad) {
- // Only ever draw one entry at a time
- return this->drawAndReset(canvas);
- } else {
- return 0;
- }
- }
- void drawBanner(SkCanvas* canvas) override {
- if (fTopBanner.size() > 0) {
- draw_text(canvas, fTopBanner.c_str());
- }
- canvas->translate(0.f, 15.f);
- if (fBottomBanner.size() > 0) {
- draw_text(canvas, fBottomBanner.c_str());
- }
- }
- private:
- SkString fTopBanner;
- SkString fBottomBanner;
- sk_sp<SkImage> fImage;
- sk_sp<SkShader> fShader;
- sk_sp<SkColorFilter> fColorFilter;
- sk_sp<SkImageFilter> fImageFilter;
- sk_sp<SkMaskFilter> fMaskFilter;
- SkScalar fPaintAlpha;
- // Batching rules
- bool fResetEachQuad;
- int fTransformBatchCount;
- SkTArray<SkPoint> fDstClips;
- SkTArray<SkMatrix> fPreViewMatrices;
- SkTArray<SkCanvas::ImageSetEntry> fSetEntries;
- SkMatrix fBaseCTM;
- int fBatchCount;
- TextureSetRenderer(const char* topBanner,
- const char* bottomBanner,
- sk_sp<SkImage> image,
- sk_sp<SkShader> shader,
- sk_sp<SkColorFilter> colorFilter,
- sk_sp<SkImageFilter> imageFilter,
- sk_sp<SkMaskFilter> maskFilter,
- SkScalar paintAlpha,
- bool resetEachQuad,
- int transformBatchCount)
- : fTopBanner(topBanner)
- , fBottomBanner(bottomBanner)
- , fImage(std::move(image))
- , fShader(std::move(shader))
- , fColorFilter(std::move(colorFilter))
- , fImageFilter(std::move(imageFilter))
- , fMaskFilter(std::move(maskFilter))
- , fPaintAlpha(paintAlpha)
- , fResetEachQuad(resetEachQuad)
- , fTransformBatchCount(transformBatchCount)
- , fBatchCount(0) {
- SkASSERT(transformBatchCount >= 0 && (!resetEachQuad || transformBatchCount == 0));
- }
- void configureTilePaint(const SkRect& rect, SkPaint* paint) const {
- paint->setAntiAlias(true);
- paint->setFilterQuality(kLow_SkFilterQuality);
- paint->setBlendMode(SkBlendMode::kSrcOver);
- // Send non-white RGB, that should be ignored
- paint->setColor4f({1.f, 0.4f, 0.25f, fPaintAlpha}, nullptr);
- if (fShader) {
- if (fResetEachQuad) {
- // Apply a local transform in the shader to map from the tile rectangle to (0,0,w,h)
- static const SkRect kTarget = SkRect::MakeWH(kTileWidth, kTileHeight);
- SkMatrix local = SkMatrix::MakeRectToRect(kTarget, rect,
- SkMatrix::kFill_ScaleToFit);
- paint->setShader(fShader->makeWithLocalMatrix(local));
- } else {
- paint->setShader(fShader);
- }
- }
- paint->setColorFilter(fColorFilter);
- paint->setImageFilter(fImageFilter);
- paint->setMaskFilter(fMaskFilter);
- }
- int drawAndReset(SkCanvas* canvas) {
- // Early out if there's nothing to draw
- if (fSetEntries.count() == 0) {
- SkASSERT(fDstClips.count() == 0 && fPreViewMatrices.count() == 0);
- return 0;
- }
- if (!fResetEachQuad && fTransformBatchCount > 0) {
- // A batch is completed
- fBatchCount++;
- if (fBatchCount < fTransformBatchCount) {
- // Haven't hit the point to submit yet, but end the current tile
- return 0;
- }
- // Submitting all tiles back to where fBaseCTM was the canvas' matrix, while the
- // canvas currently has the CTM of the last tile batch, so reset it.
- canvas->setMatrix(fBaseCTM);
- }
- #ifdef SK_DEBUG
- int expectedDstClipCount = 0;
- for (int i = 0; i < fSetEntries.count(); ++i) {
- expectedDstClipCount += 4 * fSetEntries[i].fHasClip;
- SkASSERT(fSetEntries[i].fMatrixIndex < 0 ||
- fSetEntries[i].fMatrixIndex < fPreViewMatrices.count());
- }
- SkASSERT(expectedDstClipCount == fDstClips.count());
- #endif
- SkPaint paint;
- SkRect lastTileRect = fSetEntries[fSetEntries.count() - 1].fDstRect;
- this->configureTilePaint(lastTileRect, &paint);
- canvas->experimental_DrawEdgeAAImageSet(
- fSetEntries.begin(), fSetEntries.count(), fDstClips.begin(),
- fPreViewMatrices.begin(), &paint, SkCanvas::kFast_SrcRectConstraint);
- // Reset for next tile
- fDstClips.reset();
- fPreViewMatrices.reset();
- fSetEntries.reset();
- fBatchCount = 0;
- return 1;
- }
- typedef ClipTileRenderer INHERITED;
- };
- class YUVTextureSetRenderer : public ClipTileRenderer {
- public:
- static sk_sp<ClipTileRenderer> MakeFromJPEG(sk_sp<SkData> imageData) {
- return sk_sp<ClipTileRenderer>(new YUVTextureSetRenderer(std::move(imageData)));
- }
- int drawTiles(SkCanvas* canvas) override {
- // Refresh the SkImage at the start, so that it's not attempted for every set entry
- if (fYUVData) {
- fImage = fYUVData->refImage(canvas->getGrContext());
- if (!fImage) {
- return 0;
- }
- }
- int draws = this->INHERITED::drawTiles(canvas);
- // Push the last tile set
- draws += this->drawAndReset(canvas);
- return draws;
- }
- int drawTile(SkCanvas* canvas, const SkRect& rect, const SkPoint clip[4], const bool edgeAA[4],
- int tileID, int quadID) override {
- SkASSERT(fImage);
- // Now don't actually draw the tile, accumulate it in the growing entry set
- bool hasClip = false;
- if (clip) {
- // Record the four points into fDstClips
- fDstClips.push_back_n(4, clip);
- hasClip = true;
- }
- // This acts like the whole image is rendered over the entire tile grid, so derive local
- // coordinates from 'rect', based on the grid to image transform.
- SkMatrix gridToImage = SkMatrix::MakeRectToRect(SkRect::MakeWH(kColCount * kTileWidth,
- kRowCount * kTileHeight),
- SkRect::MakeWH(fImage->width(),
- fImage->height()),
- SkMatrix::kFill_ScaleToFit);
- SkRect localRect = gridToImage.mapRect(rect);
- // drawTextureSet automatically derives appropriate local quad from localRect if clipPtr
- // is not null.
- fSetEntries.push_back(
- {fImage, localRect, rect, -1, 1.f, this->maskToFlags(edgeAA), hasClip});
- return 0;
- }
- void drawBanner(SkCanvas* canvas) override {
- draw_text(canvas, "Texture");
- canvas->translate(0.f, 15.f);
- draw_text(canvas, "YUV - GPU Only");
- }
- private:
- std::unique_ptr<sk_gpu_test::LazyYUVImage> fYUVData;
- // The last accessed SkImage from fYUVData, held here for easy access by drawTile
- sk_sp<SkImage> fImage;
- SkTArray<SkPoint> fDstClips;
- SkTArray<SkCanvas::ImageSetEntry> fSetEntries;
- YUVTextureSetRenderer(sk_sp<SkData> jpegData)
- : fYUVData(sk_gpu_test::LazyYUVImage::Make(std::move(jpegData)))
- , fImage(nullptr) {}
- int drawAndReset(SkCanvas* canvas) {
- // Early out if there's nothing to draw
- if (fSetEntries.count() == 0) {
- SkASSERT(fDstClips.count() == 0);
- return 0;
- }
- #ifdef SK_DEBUG
- int expectedDstClipCount = 0;
- for (int i = 0; i < fSetEntries.count(); ++i) {
- expectedDstClipCount += 4 * fSetEntries[i].fHasClip;
- }
- SkASSERT(expectedDstClipCount == fDstClips.count());
- #endif
- SkPaint paint;
- paint.setAntiAlias(true);
- paint.setFilterQuality(kLow_SkFilterQuality);
- paint.setBlendMode(SkBlendMode::kSrcOver);
- canvas->experimental_DrawEdgeAAImageSet(
- fSetEntries.begin(), fSetEntries.count(), fDstClips.begin(), nullptr, &paint,
- SkCanvas::kFast_SrcRectConstraint);
- // Reset for next tile
- fDstClips.reset();
- fSetEntries.reset();
- return 1;
- }
- typedef ClipTileRenderer INHERITED;
- };
- static SkTArray<sk_sp<ClipTileRenderer>> make_debug_renderers() {
- SkTArray<sk_sp<ClipTileRenderer>> renderers;
- renderers.push_back(DebugTileRenderer::Make());
- renderers.push_back(DebugTileRenderer::MakeAA());
- renderers.push_back(DebugTileRenderer::MakeNonAA());
- return renderers;
- }
- static SkTArray<sk_sp<ClipTileRenderer>> make_shader_renderers() {
- static constexpr SkPoint kPts[] = { {0.f, 0.f}, {0.25f * kTileWidth, 0.25f * kTileHeight} };
- static constexpr SkColor kColors[] = { SK_ColorBLUE, SK_ColorWHITE };
- auto gradient = SkGradientShader::MakeLinear(kPts, kColors, nullptr, 2,
- SkTileMode::kMirror);
- auto info = SkImageInfo::Make(1, 1, kAlpha_8_SkColorType, kOpaque_SkAlphaType);
- SkBitmap bm;
- bm.allocPixels(info);
- bm.eraseColor(SK_ColorWHITE);
- sk_sp<SkImage> image = SkImage::MakeFromBitmap(bm);
- SkTArray<sk_sp<ClipTileRenderer>> renderers;
- renderers.push_back(TextureSetRenderer::MakeShader("Gradient", image, gradient, false));
- renderers.push_back(TextureSetRenderer::MakeShader("Local Gradient", image, gradient, true));
- return renderers;
- }
- static SkTArray<sk_sp<ClipTileRenderer>> make_image_renderers() {
- sk_sp<SkImage> mandrill = GetResourceAsImage("images/mandrill_512.png");
- SkTArray<sk_sp<ClipTileRenderer>> renderers;
- renderers.push_back(TextureSetRenderer::MakeUnbatched(mandrill));
- renderers.push_back(TextureSetRenderer::MakeBatched(mandrill, 0));
- renderers.push_back(TextureSetRenderer::MakeBatched(mandrill, kMatrixCount));
- renderers.push_back(YUVTextureSetRenderer::MakeFromJPEG(
- GetResourceAsData("images/mandrill_h1v1.jpg")));
- return renderers;
- }
- static SkTArray<sk_sp<ClipTileRenderer>> make_filtered_renderers() {
- sk_sp<SkImage> mandrill = GetResourceAsImage("images/mandrill_512.png");
- SkColorMatrix cm;
- cm.setSaturation(10);
- sk_sp<SkColorFilter> colorFilter = SkColorFilters::Matrix(cm);
- sk_sp<SkImageFilter> imageFilter = SkDilateImageFilter::Make(8, 8, nullptr);
- static constexpr SkColor kAlphas[] = { SK_ColorTRANSPARENT, SK_ColorBLACK };
- auto alphaGradient = SkGradientShader::MakeRadial(
- {0.5f * kTileWidth * kColCount, 0.5f * kTileHeight * kRowCount},
- 0.25f * kTileWidth * kColCount, kAlphas, nullptr, 2, SkTileMode::kClamp);
- sk_sp<SkMaskFilter> maskFilter = SkShaderMaskFilter::Make(std::move(alphaGradient));
- SkTArray<sk_sp<ClipTileRenderer>> renderers;
- renderers.push_back(TextureSetRenderer::MakeAlpha(mandrill, 0.5f));
- renderers.push_back(TextureSetRenderer::MakeColorFilter("Saturation", mandrill,
- std::move(colorFilter)));
- // NOTE: won't draw correctly until SkCanvas' AutoLoopers are used to handle image filters
- renderers.push_back(TextureSetRenderer::MakeImageFilter("Dilate", mandrill,
- std::move(imageFilter)));
- renderers.push_back(TextureSetRenderer::MakeMaskFilter("Shader", mandrill,
- std::move(maskFilter)));
- // NOTE: blur mask filters do work (tested locally), but visually they don't make much
- // sense, since each quad is blurred independently
- return renderers;
- }
- DEF_GM(return new CompositorGM("debug", make_debug_renderers());)
- DEF_GM(return new CompositorGM("color", SolidColorRenderer::Make({.2f, .8f, .3f, 1.f}));)
- DEF_GM(return new CompositorGM("shader", make_shader_renderers());)
- DEF_GM(return new CompositorGM("image", make_image_renderers());)
- DEF_GM(return new CompositorGM("filter", make_filtered_renderers());)
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