BakedOpDispatcher.cpp revision c0f3f2f8c0c2fa97099e5f3c5e3860653ce0f261 
1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "BakedOpDispatcher.h"
18
19#include "BakedOpRenderer.h"
20#include "Caches.h"
21#include "Glop.h"
22#include "GlopBuilder.h"
23#include "Patch.h"
24#include "PathTessellator.h"
25#include "renderstate/OffscreenBufferPool.h"
26#include "renderstate/RenderState.h"
27#include "utils/GLUtils.h"
28#include "VertexBuffer.h"
29
30#include <algorithm>
31#include <math.h>
32#include <SkPaintDefaults.h>
33
34namespace android {
35namespace uirenderer {
36
37static void storeTexturedRect(TextureVertex* vertices, const Rect& bounds, const Rect& texCoord) {
38    vertices[0] = { bounds.left, bounds.top, texCoord.left, texCoord.top };
39    vertices[1] = { bounds.right, bounds.top, texCoord.right, texCoord.top };
40    vertices[2] = { bounds.left, bounds.bottom, texCoord.left, texCoord.bottom };
41    vertices[3] = { bounds.right, bounds.bottom, texCoord.right, texCoord.bottom };
42}
43
44void BakedOpDispatcher::onMergedBitmapOps(BakedOpRenderer& renderer,
45        const MergedBakedOpList& opList) {
46
47    const BakedOpState& firstState = *(opList.states[0]);
48    const SkBitmap* bitmap = (static_cast<const BitmapOp*>(opList.states[0]->op))->bitmap;
49
50    AssetAtlas::Entry* entry = renderer.renderState().assetAtlas().getEntry(bitmap->pixelRef());
51    Texture* texture = entry ? entry->texture : renderer.caches().textureCache.get(bitmap);
52    if (!texture) return;
53    const AutoTexture autoCleanup(texture);
54
55    TextureVertex vertices[opList.count * 4];
56    Rect texCoords(0, 0, 1, 1);
57    if (entry) {
58        entry->uvMapper.map(texCoords);
59    }
60    for (size_t i = 0; i < opList.count; i++) {
61        const BakedOpState& state = *(opList.states[i]);
62        TextureVertex* rectVerts = &vertices[i * 4];
63        Rect opBounds = state.computedState.clippedBounds;
64        if (CC_LIKELY(state.computedState.transform.isPureTranslate())) {
65            // pure translate, so snap (same behavior as onBitmapOp)
66            opBounds.snapToPixelBoundaries();
67        }
68        storeTexturedRect(rectVerts, opBounds, texCoords);
69        renderer.dirtyRenderTarget(opBounds);
70    }
71
72    const int textureFillFlags = (bitmap->colorType() == kAlpha_8_SkColorType)
73            ? TextureFillFlags::IsAlphaMaskTexture : TextureFillFlags::None;
74    Glop glop;
75    GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
76            .setRoundRectClipState(firstState.roundRectClipState)
77            .setMeshTexturedIndexedQuads(vertices, opList.count * 6)
78            .setFillTexturePaint(*texture, textureFillFlags, firstState.op->paint, firstState.alpha)
79            .setTransform(Matrix4::identity(), TransformFlags::None)
80            .setModelViewIdentityEmptyBounds()
81            .build();
82    ClipRect renderTargetClip(opList.clip);
83    const ClipBase* clip = opList.clipSideFlags ? &renderTargetClip : nullptr;
84    renderer.renderGlop(nullptr, clip, glop);
85}
86
87void BakedOpDispatcher::onMergedPatchOps(BakedOpRenderer& renderer,
88        const MergedBakedOpList& opList) {
89    const PatchOp& firstOp = *(static_cast<const PatchOp*>(opList.states[0]->op));
90    const BakedOpState& firstState = *(opList.states[0]);
91    AssetAtlas::Entry* entry = renderer.renderState().assetAtlas().getEntry(
92            firstOp.bitmap->pixelRef());
93
94    // Batches will usually contain a small number of items so it's
95    // worth performing a first iteration to count the exact number
96    // of vertices we need in the new mesh
97    uint32_t totalVertices = 0;
98
99    for (size_t i = 0; i < opList.count; i++) {
100        const PatchOp& op = *(static_cast<const PatchOp*>(opList.states[i]->op));
101
102        // TODO: cache mesh lookups
103        const Patch* opMesh = renderer.caches().patchCache.get(
104                entry, op.bitmap->width(), op.bitmap->height(),
105                op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(), op.patch);
106        totalVertices += opMesh->verticesCount;
107    }
108
109    const bool dirtyRenderTarget = renderer.offscreenRenderTarget();
110
111    uint32_t indexCount = 0;
112
113    TextureVertex vertices[totalVertices];
114    TextureVertex* vertex = &vertices[0];
115    // Create a mesh that contains the transformed vertices for all the
116    // 9-patch objects that are part of the batch. Note that onDefer()
117    // enforces ops drawn by this function to have a pure translate or
118    // identity matrix
119    for (size_t i = 0; i < opList.count; i++) {
120        const PatchOp& op = *(static_cast<const PatchOp*>(opList.states[i]->op));
121        const BakedOpState& state = *opList.states[i];
122
123        // TODO: cache mesh lookups
124        const Patch* opMesh = renderer.caches().patchCache.get(
125                entry, op.bitmap->width(), op.bitmap->height(),
126                op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(), op.patch);
127
128
129        uint32_t vertexCount = opMesh->verticesCount;
130        if (vertexCount == 0) continue;
131
132        // We use the bounds to know where to translate our vertices
133        // Using patchOp->state.mBounds wouldn't work because these
134        // bounds are clipped
135        const float tx = floorf(state.computedState.transform.getTranslateX()
136                + op.unmappedBounds.left + 0.5f);
137        const float ty = floorf(state.computedState.transform.getTranslateY()
138                + op.unmappedBounds.top + 0.5f);
139
140        // Copy & transform all the vertices for the current operation
141        TextureVertex* opVertices = opMesh->vertices.get();
142        for (uint32_t j = 0; j < vertexCount; j++, opVertices++) {
143            TextureVertex::set(vertex++,
144                    opVertices->x + tx, opVertices->y + ty,
145                    opVertices->u, opVertices->v);
146        }
147
148        // Dirty the current layer if possible. When the 9-patch does not
149        // contain empty quads we can take a shortcut and simply set the
150        // dirty rect to the object's bounds.
151        if (dirtyRenderTarget) {
152            if (!opMesh->hasEmptyQuads) {
153                renderer.dirtyRenderTarget(Rect(tx, ty,
154                        tx + op.unmappedBounds.getWidth(), ty + op.unmappedBounds.getHeight()));
155            } else {
156                const size_t count = opMesh->quads.size();
157                for (size_t i = 0; i < count; i++) {
158                    const Rect& quadBounds = opMesh->quads[i];
159                    const float x = tx + quadBounds.left;
160                    const float y = ty + quadBounds.top;
161                    renderer.dirtyRenderTarget(Rect(x, y,
162                            x + quadBounds.getWidth(), y + quadBounds.getHeight()));
163                }
164            }
165        }
166
167        indexCount += opMesh->indexCount;
168    }
169
170
171    Texture* texture = entry ? entry->texture : renderer.caches().textureCache.get(firstOp.bitmap);
172    if (!texture) return;
173    const AutoTexture autoCleanup(texture);
174
175    // 9 patches are built for stretching - always filter
176    int textureFillFlags = TextureFillFlags::ForceFilter;
177    if (firstOp.bitmap->colorType() == kAlpha_8_SkColorType) {
178        textureFillFlags |= TextureFillFlags::IsAlphaMaskTexture;
179    }
180    Glop glop;
181    GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
182            .setRoundRectClipState(firstState.roundRectClipState)
183            .setMeshTexturedIndexedQuads(vertices, indexCount)
184            .setFillTexturePaint(*texture, textureFillFlags, firstOp.paint, firstState.alpha)
185            .setTransform(Matrix4::identity(), TransformFlags::None)
186            .setModelViewIdentityEmptyBounds()
187            .build();
188    ClipRect renderTargetClip(opList.clip);
189    const ClipBase* clip = opList.clipSideFlags ? &renderTargetClip : nullptr;
190    renderer.renderGlop(nullptr, clip, glop);
191}
192
193static void renderTextShadow(BakedOpRenderer& renderer, FontRenderer& fontRenderer,
194        const TextOp& op, const BakedOpState& state) {
195    renderer.caches().textureState().activateTexture(0);
196
197    PaintUtils::TextShadow textShadow;
198    if (!PaintUtils::getTextShadow(op.paint, &textShadow)) {
199        LOG_ALWAYS_FATAL("failed to query shadow attributes");
200    }
201
202    renderer.caches().dropShadowCache.setFontRenderer(fontRenderer);
203    ShadowTexture* texture = renderer.caches().dropShadowCache.get(
204            op.paint, (const char*) op.glyphs,
205            op.glyphCount, textShadow.radius, op.positions);
206    // If the drop shadow exceeds the max texture size or couldn't be
207    // allocated, skip drawing
208    if (!texture) return;
209    const AutoTexture autoCleanup(texture);
210
211    const float sx = op.x - texture->left + textShadow.dx;
212    const float sy = op.y - texture->top + textShadow.dy;
213
214    Glop glop;
215    GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
216            .setRoundRectClipState(state.roundRectClipState)
217            .setMeshTexturedUnitQuad(nullptr)
218            .setFillShadowTexturePaint(*texture, textShadow.color, *op.paint, state.alpha)
219            .setTransform(state.computedState.transform, TransformFlags::None)
220            .setModelViewMapUnitToRect(Rect(sx, sy, sx + texture->width(), sy + texture->height()))
221            .build();
222    renderer.renderGlop(state, glop);
223}
224
225enum class TextRenderType {
226    Defer,
227    Flush
228};
229
230static void renderTextOp(BakedOpRenderer& renderer, const TextOp& op, const BakedOpState& state,
231        const ClipBase* renderClip, TextRenderType renderType) {
232    FontRenderer& fontRenderer = renderer.caches().fontRenderer.getFontRenderer();
233
234    if (CC_UNLIKELY(PaintUtils::hasTextShadow(op.paint))) {
235        fontRenderer.setFont(op.paint, SkMatrix::I());
236        renderTextShadow(renderer, fontRenderer, op, state);
237    }
238
239    float x = op.x;
240    float y = op.y;
241    const Matrix4& transform = state.computedState.transform;
242    const bool pureTranslate = transform.isPureTranslate();
243    if (CC_LIKELY(pureTranslate)) {
244        x = floorf(x + transform.getTranslateX() + 0.5f);
245        y = floorf(y + transform.getTranslateY() + 0.5f);
246        fontRenderer.setFont(op.paint, SkMatrix::I());
247        fontRenderer.setTextureFiltering(false);
248    } else if (CC_UNLIKELY(transform.isPerspective())) {
249        fontRenderer.setFont(op.paint, SkMatrix::I());
250        fontRenderer.setTextureFiltering(true);
251    } else {
252        // We only pass a partial transform to the font renderer. That partial
253        // matrix defines how glyphs are rasterized. Typically we want glyphs
254        // to be rasterized at their final size on screen, which means the partial
255        // matrix needs to take the scale factor into account.
256        // When a partial matrix is used to transform glyphs during rasterization,
257        // the mesh is generated with the inverse transform (in the case of scale,
258        // the mesh is generated at 1.0 / scale for instance.) This allows us to
259        // apply the full transform matrix at draw time in the vertex shader.
260        // Applying the full matrix in the shader is the easiest way to handle
261        // rotation and perspective and allows us to always generated quads in the
262        // font renderer which greatly simplifies the code, clipping in particular.
263        float sx, sy;
264        transform.decomposeScale(sx, sy);
265        fontRenderer.setFont(op.paint, SkMatrix::MakeScale(
266                roundf(std::max(1.0f, sx)),
267                roundf(std::max(1.0f, sy))));
268        fontRenderer.setTextureFiltering(true);
269    }
270    Rect layerBounds(FLT_MAX / 2.0f, FLT_MAX / 2.0f, FLT_MIN / 2.0f, FLT_MIN / 2.0f);
271
272    int alpha = PaintUtils::getAlphaDirect(op.paint) * state.alpha;
273    SkXfermode::Mode mode = PaintUtils::getXfermodeDirect(op.paint);
274    TextDrawFunctor functor(&renderer, &state, renderClip,
275            x, y, pureTranslate, alpha, mode, op.paint);
276
277    bool forceFinish = (renderType == TextRenderType::Flush);
278    bool mustDirtyRenderTarget = renderer.offscreenRenderTarget();
279    const Rect* localOpClip = pureTranslate ? &state.computedState.clipRect() : nullptr;
280    fontRenderer.renderPosText(op.paint, localOpClip,
281            (const char*) op.glyphs, op.glyphCount, x, y,
282            op.positions, mustDirtyRenderTarget ? &layerBounds : nullptr, &functor, forceFinish);
283
284    if (mustDirtyRenderTarget) {
285        if (!pureTranslate) {
286            transform.mapRect(layerBounds);
287        }
288        renderer.dirtyRenderTarget(layerBounds);
289    }
290}
291
292void BakedOpDispatcher::onMergedTextOps(BakedOpRenderer& renderer,
293        const MergedBakedOpList& opList) {
294    ClipRect renderTargetClip(opList.clip);
295    const ClipBase* clip = opList.clipSideFlags ? &renderTargetClip : nullptr;
296    for (size_t i = 0; i < opList.count; i++) {
297        const BakedOpState& state = *(opList.states[i]);
298        const TextOp& op = *(static_cast<const TextOp*>(state.op));
299        TextRenderType renderType = (i + 1 == opList.count)
300                ? TextRenderType::Flush : TextRenderType::Defer;
301        renderTextOp(renderer, op, state, clip, renderType);
302    }
303}
304
305namespace VertexBufferRenderFlags {
306    enum {
307        Offset = 0x1,
308        ShadowInterp = 0x2,
309    };
310}
311
312static void renderVertexBuffer(BakedOpRenderer& renderer, const BakedOpState& state,
313        const VertexBuffer& vertexBuffer, float translateX, float translateY,
314        const SkPaint& paint, int vertexBufferRenderFlags) {
315    if (CC_LIKELY(vertexBuffer.getVertexCount())) {
316        bool shadowInterp = vertexBufferRenderFlags & VertexBufferRenderFlags::ShadowInterp;
317        const int transformFlags = TransformFlags::OffsetByFudgeFactor;
318        Glop glop;
319        GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
320                .setRoundRectClipState(state.roundRectClipState)
321                .setMeshVertexBuffer(vertexBuffer, shadowInterp)
322                .setFillPaint(paint, state.alpha)
323                .setTransform(state.computedState.transform, transformFlags)
324                .setModelViewOffsetRect(translateX, translateY, vertexBuffer.getBounds())
325                .build();
326        renderer.renderGlop(state, glop);
327    }
328}
329
330static void renderConvexPath(BakedOpRenderer& renderer, const BakedOpState& state,
331        const SkPath& path, const SkPaint& paint) {
332    VertexBuffer vertexBuffer;
333    // TODO: try clipping large paths to viewport
334    PathTessellator::tessellatePath(path, &paint, state.computedState.transform, vertexBuffer);
335    renderVertexBuffer(renderer, state, vertexBuffer, 0.0f, 0.0f, paint, 0);
336}
337
338static void renderPathTexture(BakedOpRenderer& renderer, const BakedOpState& state,
339        PathTexture& texture, const RecordedOp& op) {
340    Rect dest(texture.width(), texture.height());
341    dest.translate(texture.left - texture.offset,
342            texture.top - texture.offset);
343    Glop glop;
344    GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
345            .setRoundRectClipState(state.roundRectClipState)
346            .setMeshTexturedUnitQuad(nullptr)
347            .setFillPathTexturePaint(texture, *(op.paint), state.alpha)
348            .setTransform(state.computedState.transform,  TransformFlags::None)
349            .setModelViewMapUnitToRect(dest)
350            .build();
351    renderer.renderGlop(state, glop);
352}
353
354SkRect getBoundsOfFill(const RecordedOp& op) {
355    SkRect bounds = op.unmappedBounds.toSkRect();
356    if (op.paint->getStyle() == SkPaint::kStrokeAndFill_Style) {
357        float outsetDistance = op.paint->getStrokeWidth() / 2;
358        bounds.outset(outsetDistance, outsetDistance);
359    }
360    return bounds;
361}
362
363void BakedOpDispatcher::onArcOp(BakedOpRenderer& renderer, const ArcOp& op, const BakedOpState& state) {
364    // TODO: support fills (accounting for concavity if useCenter && sweepAngle > 180)
365    if (op.paint->getStyle() != SkPaint::kStroke_Style
366            || op.paint->getPathEffect() != nullptr
367            || op.useCenter) {
368        PathTexture* texture = renderer.caches().pathCache.getArc(
369                op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(),
370                op.startAngle, op.sweepAngle, op.useCenter, op.paint);
371        const AutoTexture holder(texture);
372        if (CC_LIKELY(holder.texture)) {
373            renderPathTexture(renderer, state, *texture, op);
374        }
375    } else {
376        SkRect rect = getBoundsOfFill(op);
377        SkPath path;
378        if (op.useCenter) {
379            path.moveTo(rect.centerX(), rect.centerY());
380        }
381        path.arcTo(rect, op.startAngle, op.sweepAngle, !op.useCenter);
382        if (op.useCenter) {
383            path.close();
384        }
385        renderConvexPath(renderer, state, path, *(op.paint));
386    }
387}
388
389void BakedOpDispatcher::onBitmapOp(BakedOpRenderer& renderer, const BitmapOp& op, const BakedOpState& state) {
390    Texture* texture = renderer.getTexture(op.bitmap);
391    if (!texture) return;
392    const AutoTexture autoCleanup(texture);
393
394    const int textureFillFlags = (op.bitmap->colorType() == kAlpha_8_SkColorType)
395            ? TextureFillFlags::IsAlphaMaskTexture : TextureFillFlags::None;
396    Glop glop;
397    GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
398            .setRoundRectClipState(state.roundRectClipState)
399            .setMeshTexturedUnitQuad(texture->uvMapper)
400            .setFillTexturePaint(*texture, textureFillFlags, op.paint, state.alpha)
401            .setTransform(state.computedState.transform, TransformFlags::None)
402            .setModelViewMapUnitToRectSnap(Rect(texture->width(), texture->height()))
403            .build();
404    renderer.renderGlop(state, glop);
405}
406
407void BakedOpDispatcher::onBitmapMeshOp(BakedOpRenderer& renderer, const BitmapMeshOp& op, const BakedOpState& state) {
408    const static UvMapper defaultUvMapper;
409    const uint32_t elementCount = op.meshWidth * op.meshHeight * 6;
410
411    std::unique_ptr<ColorTextureVertex[]> mesh(new ColorTextureVertex[elementCount]);
412    ColorTextureVertex* vertex = &mesh[0];
413
414    const int* colors = op.colors;
415    std::unique_ptr<int[]> tempColors;
416    if (!colors) {
417        uint32_t colorsCount = (op.meshWidth + 1) * (op.meshHeight + 1);
418        tempColors.reset(new int[colorsCount]);
419        memset(tempColors.get(), 0xff, colorsCount * sizeof(int));
420        colors = tempColors.get();
421    }
422
423    Texture* texture = renderer.renderState().assetAtlas().getEntryTexture(op.bitmap->pixelRef());
424    const UvMapper& mapper(texture && texture->uvMapper ? *texture->uvMapper : defaultUvMapper);
425
426    for (int32_t y = 0; y < op.meshHeight; y++) {
427        for (int32_t x = 0; x < op.meshWidth; x++) {
428            uint32_t i = (y * (op.meshWidth + 1) + x) * 2;
429
430            float u1 = float(x) / op.meshWidth;
431            float u2 = float(x + 1) / op.meshWidth;
432            float v1 = float(y) / op.meshHeight;
433            float v2 = float(y + 1) / op.meshHeight;
434
435            mapper.map(u1, v1, u2, v2);
436
437            int ax = i + (op.meshWidth + 1) * 2;
438            int ay = ax + 1;
439            int bx = i;
440            int by = bx + 1;
441            int cx = i + 2;
442            int cy = cx + 1;
443            int dx = i + (op.meshWidth + 1) * 2 + 2;
444            int dy = dx + 1;
445
446            const float* vertices = op.vertices;
447            ColorTextureVertex::set(vertex++, vertices[dx], vertices[dy], u2, v2, colors[dx / 2]);
448            ColorTextureVertex::set(vertex++, vertices[ax], vertices[ay], u1, v2, colors[ax / 2]);
449            ColorTextureVertex::set(vertex++, vertices[bx], vertices[by], u1, v1, colors[bx / 2]);
450
451            ColorTextureVertex::set(vertex++, vertices[dx], vertices[dy], u2, v2, colors[dx / 2]);
452            ColorTextureVertex::set(vertex++, vertices[bx], vertices[by], u1, v1, colors[bx / 2]);
453            ColorTextureVertex::set(vertex++, vertices[cx], vertices[cy], u2, v1, colors[cx / 2]);
454        }
455    }
456
457    if (!texture) {
458        texture = renderer.caches().textureCache.get(op.bitmap);
459        if (!texture) {
460            return;
461        }
462    }
463    const AutoTexture autoCleanup(texture);
464
465    /*
466     * TODO: handle alpha_8 textures correctly by applying paint color, but *not*
467     * shader in that case to mimic the behavior in SkiaCanvas::drawBitmapMesh.
468     */
469    const int textureFillFlags = TextureFillFlags::None;
470    Glop glop;
471    GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
472            .setRoundRectClipState(state.roundRectClipState)
473            .setMeshColoredTexturedMesh(mesh.get(), elementCount)
474            .setFillTexturePaint(*texture, textureFillFlags, op.paint, state.alpha)
475            .setTransform(state.computedState.transform,  TransformFlags::None)
476            .setModelViewOffsetRect(0, 0, op.unmappedBounds)
477            .build();
478    renderer.renderGlop(state, glop);
479}
480
481void BakedOpDispatcher::onBitmapRectOp(BakedOpRenderer& renderer, const BitmapRectOp& op, const BakedOpState& state) {
482    Texture* texture = renderer.getTexture(op.bitmap);
483    if (!texture) return;
484    const AutoTexture autoCleanup(texture);
485
486    Rect uv(std::max(0.0f, op.src.left / texture->width()),
487            std::max(0.0f, op.src.top / texture->height()),
488            std::min(1.0f, op.src.right / texture->width()),
489            std::min(1.0f, op.src.bottom / texture->height()));
490
491    const int textureFillFlags = (op.bitmap->colorType() == kAlpha_8_SkColorType)
492            ? TextureFillFlags::IsAlphaMaskTexture : TextureFillFlags::None;
493    const bool tryToSnap = MathUtils::areEqual(op.src.getWidth(), op.unmappedBounds.getWidth())
494            && MathUtils::areEqual(op.src.getHeight(), op.unmappedBounds.getHeight());
495    Glop glop;
496    GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
497            .setRoundRectClipState(state.roundRectClipState)
498            .setMeshTexturedUvQuad(texture->uvMapper, uv)
499            .setFillTexturePaint(*texture, textureFillFlags, op.paint, state.alpha)
500            .setTransform(state.computedState.transform, TransformFlags::None)
501            .setModelViewMapUnitToRectOptionalSnap(tryToSnap, op.unmappedBounds)
502            .build();
503    renderer.renderGlop(state, glop);
504}
505
506void BakedOpDispatcher::onFunctorOp(BakedOpRenderer& renderer, const FunctorOp& op, const BakedOpState& state) {
507    renderer.renderFunctor(op, state);
508}
509
510void BakedOpDispatcher::onLinesOp(BakedOpRenderer& renderer, const LinesOp& op, const BakedOpState& state) {
511    VertexBuffer buffer;
512    PathTessellator::tessellateLines(op.points, op.floatCount, op.paint,
513            state.computedState.transform, buffer);
514    int displayFlags = op.paint->isAntiAlias() ? 0 : VertexBufferRenderFlags::Offset;
515    renderVertexBuffer(renderer, state, buffer, 0, 0, *(op.paint), displayFlags);
516}
517
518void BakedOpDispatcher::onOvalOp(BakedOpRenderer& renderer, const OvalOp& op, const BakedOpState& state) {
519    if (op.paint->getPathEffect() != nullptr) {
520        PathTexture* texture = renderer.caches().pathCache.getOval(
521                op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(), op.paint);
522        const AutoTexture holder(texture);
523        if (CC_LIKELY(holder.texture)) {
524            renderPathTexture(renderer, state, *texture, op);
525        }
526    } else {
527        SkPath path;
528        SkRect rect = getBoundsOfFill(op);
529        path.addOval(rect);
530        renderConvexPath(renderer, state, path, *(op.paint));
531    }
532}
533
534void BakedOpDispatcher::onPatchOp(BakedOpRenderer& renderer, const PatchOp& op, const BakedOpState& state) {
535    // 9 patches are built for stretching - always filter
536    int textureFillFlags = TextureFillFlags::ForceFilter;
537    if (op.bitmap->colorType() == kAlpha_8_SkColorType) {
538        textureFillFlags |= TextureFillFlags::IsAlphaMaskTexture;
539    }
540
541    // TODO: avoid redoing the below work each frame:
542    AssetAtlas::Entry* entry = renderer.renderState().assetAtlas().getEntry(op.bitmap->pixelRef());
543    const Patch* mesh = renderer.caches().patchCache.get(
544            entry, op.bitmap->width(), op.bitmap->height(),
545            op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(), op.patch);
546
547    Texture* texture = entry ? entry->texture : renderer.caches().textureCache.get(op.bitmap);
548    if (CC_LIKELY(texture)) {
549        const AutoTexture autoCleanup(texture);
550        Glop glop;
551        GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
552                .setRoundRectClipState(state.roundRectClipState)
553                .setMeshPatchQuads(*mesh)
554                .setFillTexturePaint(*texture, textureFillFlags, op.paint, state.alpha)
555                .setTransform(state.computedState.transform, TransformFlags::None)
556                .setModelViewOffsetRectSnap(op.unmappedBounds.left, op.unmappedBounds.top,
557                        Rect(op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight()))
558                .build();
559        renderer.renderGlop(state, glop);
560    }
561}
562
563void BakedOpDispatcher::onPathOp(BakedOpRenderer& renderer, const PathOp& op, const BakedOpState& state) {
564    PathTexture* texture = renderer.caches().pathCache.get(op.path, op.paint);
565    const AutoTexture holder(texture);
566    if (CC_LIKELY(holder.texture)) {
567        renderPathTexture(renderer, state, *texture, op);
568    }
569}
570
571void BakedOpDispatcher::onPointsOp(BakedOpRenderer& renderer, const PointsOp& op, const BakedOpState& state) {
572    VertexBuffer buffer;
573    PathTessellator::tessellatePoints(op.points, op.floatCount, op.paint,
574            state.computedState.transform, buffer);
575    int displayFlags = op.paint->isAntiAlias() ? 0 : VertexBufferRenderFlags::Offset;
576    renderVertexBuffer(renderer, state, buffer, 0, 0, *(op.paint), displayFlags);
577}
578
579// See SkPaintDefaults.h
580#define SkPaintDefaults_MiterLimit SkIntToScalar(4)
581
582void BakedOpDispatcher::onRectOp(BakedOpRenderer& renderer, const RectOp& op, const BakedOpState& state) {
583    if (op.paint->getStyle() != SkPaint::kFill_Style) {
584        // only fill + default miter is supported by drawConvexPath, since others must handle joins
585        static_assert(SkPaintDefaults_MiterLimit == 4.0f, "Miter limit has changed");
586        if (CC_UNLIKELY(op.paint->getPathEffect() != nullptr
587                || op.paint->getStrokeJoin() != SkPaint::kMiter_Join
588                || op.paint->getStrokeMiter() != SkPaintDefaults_MiterLimit)) {
589             PathTexture* texture = renderer.caches().pathCache.getRect(
590                     op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(), op.paint);
591             const AutoTexture holder(texture);
592             if (CC_LIKELY(holder.texture)) {
593                 renderPathTexture(renderer, state, *texture, op);
594             }
595        } else {
596            SkPath path;
597            path.addRect(getBoundsOfFill(op));
598            renderConvexPath(renderer, state, path, *(op.paint));
599        }
600    } else {
601        if (op.paint->isAntiAlias() && !state.computedState.transform.isSimple()) {
602            SkPath path;
603            path.addRect(op.unmappedBounds.toSkRect());
604            renderConvexPath(renderer, state, path, *(op.paint));
605        } else {
606            // render simple unit quad, no tessellation required
607            Glop glop;
608            GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
609                    .setRoundRectClipState(state.roundRectClipState)
610                    .setMeshUnitQuad()
611                    .setFillPaint(*op.paint, state.alpha)
612                    .setTransform(state.computedState.transform, TransformFlags::None)
613                    .setModelViewMapUnitToRect(op.unmappedBounds)
614                    .build();
615            renderer.renderGlop(state, glop);
616        }
617    }
618}
619
620void BakedOpDispatcher::onRoundRectOp(BakedOpRenderer& renderer, const RoundRectOp& op, const BakedOpState& state) {
621    if (op.paint->getPathEffect() != nullptr) {
622        PathTexture* texture = renderer.caches().pathCache.getRoundRect(
623                op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(),
624                op.rx, op.ry, op.paint);
625        const AutoTexture holder(texture);
626        if (CC_LIKELY(holder.texture)) {
627            renderPathTexture(renderer, state, *texture, op);
628        }
629    } else {
630        const VertexBuffer* buffer = renderer.caches().tessellationCache.getRoundRect(
631                state.computedState.transform, *(op.paint),
632                op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(), op.rx, op.ry);
633        renderVertexBuffer(renderer, state, *buffer,
634                op.unmappedBounds.left, op.unmappedBounds.top, *(op.paint), 0);
635    }
636}
637
638static void renderShadow(BakedOpRenderer& renderer, const BakedOpState& state, float casterAlpha,
639        const VertexBuffer* ambientShadowVertexBuffer, const VertexBuffer* spotShadowVertexBuffer) {
640    SkPaint paint;
641    paint.setAntiAlias(true); // want to use AlphaVertex
642
643    // The caller has made sure casterAlpha > 0.
644    uint8_t ambientShadowAlpha = renderer.getLightInfo().ambientShadowAlpha;
645    if (CC_UNLIKELY(Properties::overrideAmbientShadowStrength >= 0)) {
646        ambientShadowAlpha = Properties::overrideAmbientShadowStrength;
647    }
648    if (ambientShadowVertexBuffer && ambientShadowAlpha > 0) {
649        paint.setAlpha((uint8_t)(casterAlpha * ambientShadowAlpha));
650        renderVertexBuffer(renderer, state, *ambientShadowVertexBuffer, 0, 0,
651                paint, VertexBufferRenderFlags::ShadowInterp);
652    }
653
654    uint8_t spotShadowAlpha = renderer.getLightInfo().spotShadowAlpha;
655    if (CC_UNLIKELY(Properties::overrideSpotShadowStrength >= 0)) {
656        spotShadowAlpha = Properties::overrideSpotShadowStrength;
657    }
658    if (spotShadowVertexBuffer && spotShadowAlpha > 0) {
659        paint.setAlpha((uint8_t)(casterAlpha * spotShadowAlpha));
660        renderVertexBuffer(renderer, state, *spotShadowVertexBuffer, 0, 0,
661                paint, VertexBufferRenderFlags::ShadowInterp);
662    }
663}
664
665void BakedOpDispatcher::onShadowOp(BakedOpRenderer& renderer, const ShadowOp& op, const BakedOpState& state) {
666    TessellationCache::vertexBuffer_pair_t buffers;
667    renderer.caches().tessellationCache.getShadowBuffers(&state.computedState.transform,
668            op.localClipRect, op.casterAlpha >= 1.0f, op.casterPath,
669            &op.shadowMatrixXY, &op.shadowMatrixZ,
670            op.lightCenter, renderer.getLightInfo().lightRadius,
671            buffers);
672
673    renderShadow(renderer, state, op.casterAlpha, buffers.first, buffers.second);
674}
675
676void BakedOpDispatcher::onSimpleRectsOp(BakedOpRenderer& renderer, const SimpleRectsOp& op, const BakedOpState& state) {
677    Glop glop;
678    GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
679            .setRoundRectClipState(state.roundRectClipState)
680            .setMeshIndexedQuads(&op.vertices[0], op.vertexCount / 4)
681            .setFillPaint(*op.paint, state.alpha)
682            .setTransform(state.computedState.transform, TransformFlags::None)
683            .setModelViewOffsetRect(0, 0, op.unmappedBounds)
684            .build();
685    renderer.renderGlop(state, glop);
686}
687
688void BakedOpDispatcher::onTextOp(BakedOpRenderer& renderer, const TextOp& op, const BakedOpState& state) {
689    renderTextOp(renderer, op, state, state.computedState.getClipIfNeeded(), TextRenderType::Flush);
690}
691
692void BakedOpDispatcher::onTextOnPathOp(BakedOpRenderer& renderer, const TextOnPathOp& op, const BakedOpState& state) {
693    // Note: can't trust clipSideFlags since we record with unmappedBounds == clip.
694    // TODO: respect clipSideFlags, once we record with bounds
695    auto renderTargetClip = state.computedState.clipState;
696
697    FontRenderer& fontRenderer = renderer.caches().fontRenderer.getFontRenderer();
698    fontRenderer.setFont(op.paint, SkMatrix::I());
699    fontRenderer.setTextureFiltering(true);
700
701    Rect layerBounds(FLT_MAX / 2.0f, FLT_MAX / 2.0f, FLT_MIN / 2.0f, FLT_MIN / 2.0f);
702
703    int alpha = PaintUtils::getAlphaDirect(op.paint) * state.alpha;
704    SkXfermode::Mode mode = PaintUtils::getXfermodeDirect(op.paint);
705    TextDrawFunctor functor(&renderer, &state, renderTargetClip,
706            0.0f, 0.0f, false, alpha, mode, op.paint);
707
708    bool mustDirtyRenderTarget = renderer.offscreenRenderTarget();
709    const Rect localSpaceClip = state.computedState.computeLocalSpaceClip();
710    if (fontRenderer.renderTextOnPath(op.paint, &localSpaceClip,
711            reinterpret_cast<const char*>(op.glyphs), op.glyphCount,
712            op.path, op.hOffset, op.vOffset,
713            mustDirtyRenderTarget ? &layerBounds : nullptr, &functor)) {
714        if (mustDirtyRenderTarget) {
715            // manually dirty render target, since TextDrawFunctor won't
716            state.computedState.transform.mapRect(layerBounds);
717            renderer.dirtyRenderTarget(layerBounds);
718        }
719    }
720}
721
722void BakedOpDispatcher::onTextureLayerOp(BakedOpRenderer& renderer, const TextureLayerOp& op, const BakedOpState& state) {
723    const bool tryToSnap = !op.layer->getForceFilter();
724    float alpha = (op.layer->getAlpha() / 255.0f) * state.alpha;
725    Glop glop;
726    GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
727            .setRoundRectClipState(state.roundRectClipState)
728            .setMeshTexturedUvQuad(nullptr, Rect(0, 1, 1, 0)) // TODO: simplify with VBO
729            .setFillTextureLayer(*(op.layer), alpha)
730            .setTransform(state.computedState.transform, TransformFlags::None)
731            .setModelViewMapUnitToRectOptionalSnap(tryToSnap, Rect(op.layer->getWidth(), op.layer->getHeight()))
732            .build();
733    renderer.renderGlop(state, glop);
734}
735
736void BakedOpDispatcher::onLayerOp(BakedOpRenderer& renderer, const LayerOp& op, const BakedOpState& state) {
737    // Note that we don't use op->paint in this function - it's never set on a LayerOp
738    OffscreenBuffer* buffer = *op.layerHandle;
739
740    if (CC_UNLIKELY(!buffer)) {
741        // Layer was not allocated, which can occur if there were no draw ops inside. We draw the
742        // equivalent by drawing a rect with the same layer properties (alpha/xfer/filter).
743        SkPaint paint;
744        paint.setAlpha(op.alpha * 255);
745        paint.setXfermodeMode(op.mode);
746        paint.setColorFilter(op.colorFilter);
747        RectOp rectOp(op.unmappedBounds, op.localMatrix, op.localClip, &paint);
748        BakedOpDispatcher::onRectOp(renderer, rectOp, state);
749    } else {
750        float layerAlpha = op.alpha * state.alpha;
751        Glop glop;
752        GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
753                .setRoundRectClipState(state.roundRectClipState)
754                .setMeshTexturedIndexedVbo(buffer->vbo, buffer->elementCount)
755                .setFillLayer(buffer->texture, op.colorFilter, layerAlpha, op.mode, Blend::ModeOrderSwap::NoSwap)
756                .setTransform(state.computedState.transform, TransformFlags::None)
757                .setModelViewOffsetRectSnap(op.unmappedBounds.left, op.unmappedBounds.top,
758                        Rect(op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight()))
759                .build();
760        renderer.renderGlop(state, glop);
761
762        if (op.destroy) {
763            renderer.renderState().layerPool().putOrDelete(buffer);
764        }
765    }
766}
767
768void BakedOpDispatcher::onCopyToLayerOp(BakedOpRenderer& renderer, const CopyToLayerOp& op, const BakedOpState& state) {
769    LOG_ALWAYS_FATAL_IF(*(op.layerHandle) != nullptr, "layer already exists!");
770    *(op.layerHandle) = renderer.copyToLayer(state.computedState.clippedBounds);
771    LOG_ALWAYS_FATAL_IF(*op.layerHandle == nullptr, "layer copy failed");
772}
773
774void BakedOpDispatcher::onCopyFromLayerOp(BakedOpRenderer& renderer, const CopyFromLayerOp& op, const BakedOpState& state) {
775    LOG_ALWAYS_FATAL_IF(*op.layerHandle == nullptr, "no layer to draw underneath!");
776    if (!state.computedState.clippedBounds.isEmpty()) {
777        if (op.paint && op.paint->getAlpha() < 255) {
778            SkPaint layerPaint;
779            layerPaint.setAlpha(op.paint->getAlpha());
780            layerPaint.setXfermodeMode(SkXfermode::kDstIn_Mode);
781            layerPaint.setColorFilter(op.paint->getColorFilter());
782            RectOp rectOp(state.computedState.clippedBounds, Matrix4::identity(), nullptr, &layerPaint);
783            BakedOpDispatcher::onRectOp(renderer, rectOp, state);
784        }
785
786        OffscreenBuffer& layer = **(op.layerHandle);
787        auto mode = PaintUtils::getXfermodeDirect(op.paint);
788        Glop glop;
789        GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
790                .setRoundRectClipState(state.roundRectClipState)
791                .setMeshTexturedUvQuad(nullptr, layer.getTextureCoordinates())
792                .setFillLayer(layer.texture, nullptr, 1.0f, mode, Blend::ModeOrderSwap::Swap)
793                .setTransform(state.computedState.transform, TransformFlags::None)
794                .setModelViewMapUnitToRect(state.computedState.clippedBounds)
795                .build();
796        renderer.renderGlop(state, glop);
797    }
798    renderer.renderState().layerPool().putOrDelete(*op.layerHandle);
799}
800
801} // namespace uirenderer
802} // namespace android
803