BakedOpDispatcher.cpp revision e8c3c813b0e3ac98304b17a751ce6e436e252bd9 
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, op.glyphs, op.glyphCount, textShadow.radius, op.positions);
205    // If the drop shadow exceeds the max texture size or couldn't be
206    // allocated, skip drawing
207    if (!texture) return;
208    const AutoTexture autoCleanup(texture);
209
210    const float sx = op.x - texture->left + textShadow.dx;
211    const float sy = op.y - texture->top + textShadow.dy;
212
213    Glop glop;
214    GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
215            .setRoundRectClipState(state.roundRectClipState)
216            .setMeshTexturedUnitQuad(nullptr)
217            .setFillShadowTexturePaint(*texture, textShadow.color, *op.paint, state.alpha)
218            .setTransform(state.computedState.transform, TransformFlags::None)
219            .setModelViewMapUnitToRect(Rect(sx, sy, sx + texture->width(), sy + texture->height()))
220            .build();
221    renderer.renderGlop(state, glop);
222}
223
224enum class TextRenderType {
225    Defer,
226    Flush
227};
228
229static void renderTextOp(BakedOpRenderer& renderer, const TextOp& op, const BakedOpState& state,
230        const ClipBase* renderClip, TextRenderType renderType) {
231    FontRenderer& fontRenderer = renderer.caches().fontRenderer.getFontRenderer();
232
233    if (CC_UNLIKELY(PaintUtils::hasTextShadow(op.paint))) {
234        fontRenderer.setFont(op.paint, SkMatrix::I());
235        renderTextShadow(renderer, fontRenderer, op, state);
236    }
237
238    float x = op.x;
239    float y = op.y;
240    const Matrix4& transform = state.computedState.transform;
241    const bool pureTranslate = transform.isPureTranslate();
242    if (CC_LIKELY(pureTranslate)) {
243        x = floorf(x + transform.getTranslateX() + 0.5f);
244        y = floorf(y + transform.getTranslateY() + 0.5f);
245        fontRenderer.setFont(op.paint, SkMatrix::I());
246        fontRenderer.setTextureFiltering(false);
247    } else if (CC_UNLIKELY(transform.isPerspective())) {
248        fontRenderer.setFont(op.paint, SkMatrix::I());
249        fontRenderer.setTextureFiltering(true);
250    } else {
251        // We only pass a partial transform to the font renderer. That partial
252        // matrix defines how glyphs are rasterized. Typically we want glyphs
253        // to be rasterized at their final size on screen, which means the partial
254        // matrix needs to take the scale factor into account.
255        // When a partial matrix is used to transform glyphs during rasterization,
256        // the mesh is generated with the inverse transform (in the case of scale,
257        // the mesh is generated at 1.0 / scale for instance.) This allows us to
258        // apply the full transform matrix at draw time in the vertex shader.
259        // Applying the full matrix in the shader is the easiest way to handle
260        // rotation and perspective and allows us to always generated quads in the
261        // font renderer which greatly simplifies the code, clipping in particular.
262        float sx, sy;
263        transform.decomposeScale(sx, sy);
264        fontRenderer.setFont(op.paint, SkMatrix::MakeScale(
265                roundf(std::max(1.0f, sx)),
266                roundf(std::max(1.0f, sy))));
267        fontRenderer.setTextureFiltering(true);
268    }
269    Rect layerBounds(FLT_MAX / 2.0f, FLT_MAX / 2.0f, FLT_MIN / 2.0f, FLT_MIN / 2.0f);
270
271    int alpha = PaintUtils::getAlphaDirect(op.paint) * state.alpha;
272    SkXfermode::Mode mode = PaintUtils::getXfermodeDirect(op.paint);
273    TextDrawFunctor functor(&renderer, &state, renderClip,
274            x, y, pureTranslate, alpha, mode, op.paint);
275
276    bool forceFinish = (renderType == TextRenderType::Flush);
277    bool mustDirtyRenderTarget = renderer.offscreenRenderTarget();
278    const Rect* localOpClip = pureTranslate ? &state.computedState.clipRect() : nullptr;
279    fontRenderer.renderPosText(op.paint, localOpClip, op.glyphs, op.glyphCount, x, y,
280            op.positions, mustDirtyRenderTarget ? &layerBounds : nullptr, &functor, forceFinish);
281
282    if (mustDirtyRenderTarget) {
283        if (!pureTranslate) {
284            transform.mapRect(layerBounds);
285        }
286        renderer.dirtyRenderTarget(layerBounds);
287    }
288}
289
290void BakedOpDispatcher::onMergedTextOps(BakedOpRenderer& renderer,
291        const MergedBakedOpList& opList) {
292    ClipRect renderTargetClip(opList.clip);
293    const ClipBase* clip = opList.clipSideFlags ? &renderTargetClip : nullptr;
294    for (size_t i = 0; i < opList.count; i++) {
295        const BakedOpState& state = *(opList.states[i]);
296        const TextOp& op = *(static_cast<const TextOp*>(state.op));
297        TextRenderType renderType = (i + 1 == opList.count)
298                ? TextRenderType::Flush : TextRenderType::Defer;
299        renderTextOp(renderer, op, state, clip, renderType);
300    }
301}
302
303namespace VertexBufferRenderFlags {
304    enum {
305        Offset = 0x1,
306        ShadowInterp = 0x2,
307    };
308}
309
310static void renderVertexBuffer(BakedOpRenderer& renderer, const BakedOpState& state,
311        const VertexBuffer& vertexBuffer, float translateX, float translateY,
312        const SkPaint& paint, int vertexBufferRenderFlags) {
313    if (CC_LIKELY(vertexBuffer.getVertexCount())) {
314        bool shadowInterp = vertexBufferRenderFlags & VertexBufferRenderFlags::ShadowInterp;
315        const int transformFlags = TransformFlags::OffsetByFudgeFactor;
316        Glop glop;
317        GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
318                .setRoundRectClipState(state.roundRectClipState)
319                .setMeshVertexBuffer(vertexBuffer, shadowInterp)
320                .setFillPaint(paint, state.alpha)
321                .setTransform(state.computedState.transform, transformFlags)
322                .setModelViewOffsetRect(translateX, translateY, vertexBuffer.getBounds())
323                .build();
324        renderer.renderGlop(state, glop);
325    }
326}
327
328static void renderConvexPath(BakedOpRenderer& renderer, const BakedOpState& state,
329        const SkPath& path, const SkPaint& paint) {
330    VertexBuffer vertexBuffer;
331    // TODO: try clipping large paths to viewport
332    PathTessellator::tessellatePath(path, &paint, state.computedState.transform, vertexBuffer);
333    renderVertexBuffer(renderer, state, vertexBuffer, 0.0f, 0.0f, paint, 0);
334}
335
336static void renderPathTexture(BakedOpRenderer& renderer, const BakedOpState& state,
337        PathTexture& texture, const RecordedOp& op) {
338    Rect dest(texture.width(), texture.height());
339    dest.translate(texture.left - texture.offset,
340            texture.top - texture.offset);
341    Glop glop;
342    GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
343            .setRoundRectClipState(state.roundRectClipState)
344            .setMeshTexturedUnitQuad(nullptr)
345            .setFillPathTexturePaint(texture, *(op.paint), state.alpha)
346            .setTransform(state.computedState.transform,  TransformFlags::None)
347            .setModelViewMapUnitToRect(dest)
348            .build();
349    renderer.renderGlop(state, glop);
350}
351
352SkRect getBoundsOfFill(const RecordedOp& op) {
353    SkRect bounds = op.unmappedBounds.toSkRect();
354    if (op.paint->getStyle() == SkPaint::kStrokeAndFill_Style) {
355        float outsetDistance = op.paint->getStrokeWidth() / 2;
356        bounds.outset(outsetDistance, outsetDistance);
357    }
358    return bounds;
359}
360
361void BakedOpDispatcher::onArcOp(BakedOpRenderer& renderer, const ArcOp& op, const BakedOpState& state) {
362    // TODO: support fills (accounting for concavity if useCenter && sweepAngle > 180)
363    if (op.paint->getStyle() != SkPaint::kStroke_Style
364            || op.paint->getPathEffect() != nullptr
365            || op.useCenter) {
366        PathTexture* texture = renderer.caches().pathCache.getArc(
367                op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(),
368                op.startAngle, op.sweepAngle, op.useCenter, op.paint);
369        const AutoTexture holder(texture);
370        if (CC_LIKELY(holder.texture)) {
371            renderPathTexture(renderer, state, *texture, op);
372        }
373    } else {
374        SkRect rect = getBoundsOfFill(op);
375        SkPath path;
376        if (op.useCenter) {
377            path.moveTo(rect.centerX(), rect.centerY());
378        }
379        path.arcTo(rect, op.startAngle, op.sweepAngle, !op.useCenter);
380        if (op.useCenter) {
381            path.close();
382        }
383        renderConvexPath(renderer, state, path, *(op.paint));
384    }
385}
386
387void BakedOpDispatcher::onBitmapOp(BakedOpRenderer& renderer, const BitmapOp& op, const BakedOpState& state) {
388    Texture* texture = renderer.getTexture(op.bitmap);
389    if (!texture) return;
390    const AutoTexture autoCleanup(texture);
391
392    const int textureFillFlags = (op.bitmap->colorType() == kAlpha_8_SkColorType)
393            ? TextureFillFlags::IsAlphaMaskTexture : TextureFillFlags::None;
394    Glop glop;
395    GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
396            .setRoundRectClipState(state.roundRectClipState)
397            .setMeshTexturedUnitQuad(texture->uvMapper)
398            .setFillTexturePaint(*texture, textureFillFlags, op.paint, state.alpha)
399            .setTransform(state.computedState.transform, TransformFlags::None)
400            .setModelViewMapUnitToRectSnap(Rect(texture->width(), texture->height()))
401            .build();
402    renderer.renderGlop(state, glop);
403}
404
405void BakedOpDispatcher::onBitmapMeshOp(BakedOpRenderer& renderer, const BitmapMeshOp& op, const BakedOpState& state) {
406    const static UvMapper defaultUvMapper;
407    const uint32_t elementCount = op.meshWidth * op.meshHeight * 6;
408
409    std::unique_ptr<ColorTextureVertex[]> mesh(new ColorTextureVertex[elementCount]);
410    ColorTextureVertex* vertex = &mesh[0];
411
412    const int* colors = op.colors;
413    std::unique_ptr<int[]> tempColors;
414    if (!colors) {
415        uint32_t colorsCount = (op.meshWidth + 1) * (op.meshHeight + 1);
416        tempColors.reset(new int[colorsCount]);
417        memset(tempColors.get(), 0xff, colorsCount * sizeof(int));
418        colors = tempColors.get();
419    }
420
421    Texture* texture = renderer.renderState().assetAtlas().getEntryTexture(op.bitmap->pixelRef());
422    const UvMapper& mapper(texture && texture->uvMapper ? *texture->uvMapper : defaultUvMapper);
423
424    for (int32_t y = 0; y < op.meshHeight; y++) {
425        for (int32_t x = 0; x < op.meshWidth; x++) {
426            uint32_t i = (y * (op.meshWidth + 1) + x) * 2;
427
428            float u1 = float(x) / op.meshWidth;
429            float u2 = float(x + 1) / op.meshWidth;
430            float v1 = float(y) / op.meshHeight;
431            float v2 = float(y + 1) / op.meshHeight;
432
433            mapper.map(u1, v1, u2, v2);
434
435            int ax = i + (op.meshWidth + 1) * 2;
436            int ay = ax + 1;
437            int bx = i;
438            int by = bx + 1;
439            int cx = i + 2;
440            int cy = cx + 1;
441            int dx = i + (op.meshWidth + 1) * 2 + 2;
442            int dy = dx + 1;
443
444            const float* vertices = op.vertices;
445            ColorTextureVertex::set(vertex++, vertices[dx], vertices[dy], u2, v2, colors[dx / 2]);
446            ColorTextureVertex::set(vertex++, vertices[ax], vertices[ay], u1, v2, colors[ax / 2]);
447            ColorTextureVertex::set(vertex++, vertices[bx], vertices[by], u1, v1, colors[bx / 2]);
448
449            ColorTextureVertex::set(vertex++, vertices[dx], vertices[dy], u2, v2, colors[dx / 2]);
450            ColorTextureVertex::set(vertex++, vertices[bx], vertices[by], u1, v1, colors[bx / 2]);
451            ColorTextureVertex::set(vertex++, vertices[cx], vertices[cy], u2, v1, colors[cx / 2]);
452        }
453    }
454
455    if (!texture) {
456        texture = renderer.caches().textureCache.get(op.bitmap);
457        if (!texture) {
458            return;
459        }
460    }
461    const AutoTexture autoCleanup(texture);
462
463    /*
464     * TODO: handle alpha_8 textures correctly by applying paint color, but *not*
465     * shader in that case to mimic the behavior in SkiaCanvas::drawBitmapMesh.
466     */
467    const int textureFillFlags = TextureFillFlags::None;
468    Glop glop;
469    GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
470            .setRoundRectClipState(state.roundRectClipState)
471            .setMeshColoredTexturedMesh(mesh.get(), elementCount)
472            .setFillTexturePaint(*texture, textureFillFlags, op.paint, state.alpha)
473            .setTransform(state.computedState.transform,  TransformFlags::None)
474            .setModelViewOffsetRect(0, 0, op.unmappedBounds)
475            .build();
476    renderer.renderGlop(state, glop);
477}
478
479void BakedOpDispatcher::onBitmapRectOp(BakedOpRenderer& renderer, const BitmapRectOp& op, const BakedOpState& state) {
480    Texture* texture = renderer.getTexture(op.bitmap);
481    if (!texture) return;
482    const AutoTexture autoCleanup(texture);
483
484    Rect uv(std::max(0.0f, op.src.left / texture->width()),
485            std::max(0.0f, op.src.top / texture->height()),
486            std::min(1.0f, op.src.right / texture->width()),
487            std::min(1.0f, op.src.bottom / texture->height()));
488
489    const int textureFillFlags = (op.bitmap->colorType() == kAlpha_8_SkColorType)
490            ? TextureFillFlags::IsAlphaMaskTexture : TextureFillFlags::None;
491    const bool tryToSnap = MathUtils::areEqual(op.src.getWidth(), op.unmappedBounds.getWidth())
492            && MathUtils::areEqual(op.src.getHeight(), op.unmappedBounds.getHeight());
493    Glop glop;
494    GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
495            .setRoundRectClipState(state.roundRectClipState)
496            .setMeshTexturedUvQuad(texture->uvMapper, uv)
497            .setFillTexturePaint(*texture, textureFillFlags, op.paint, state.alpha)
498            .setTransform(state.computedState.transform, TransformFlags::None)
499            .setModelViewMapUnitToRectOptionalSnap(tryToSnap, op.unmappedBounds)
500            .build();
501    renderer.renderGlop(state, glop);
502}
503
504void BakedOpDispatcher::onFunctorOp(BakedOpRenderer& renderer, const FunctorOp& op, const BakedOpState& state) {
505    renderer.renderFunctor(op, state);
506}
507
508void BakedOpDispatcher::onLinesOp(BakedOpRenderer& renderer, const LinesOp& op, const BakedOpState& state) {
509    VertexBuffer buffer;
510    PathTessellator::tessellateLines(op.points, op.floatCount, op.paint,
511            state.computedState.transform, buffer);
512    int displayFlags = op.paint->isAntiAlias() ? 0 : VertexBufferRenderFlags::Offset;
513    renderVertexBuffer(renderer, state, buffer, 0, 0, *(op.paint), displayFlags);
514}
515
516void BakedOpDispatcher::onOvalOp(BakedOpRenderer& renderer, const OvalOp& op, const BakedOpState& state) {
517    if (op.paint->getPathEffect() != nullptr) {
518        PathTexture* texture = renderer.caches().pathCache.getOval(
519                op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(), op.paint);
520        const AutoTexture holder(texture);
521        if (CC_LIKELY(holder.texture)) {
522            renderPathTexture(renderer, state, *texture, op);
523        }
524    } else {
525        SkPath path;
526        SkRect rect = getBoundsOfFill(op);
527        path.addOval(rect);
528        renderConvexPath(renderer, state, path, *(op.paint));
529    }
530}
531
532void BakedOpDispatcher::onPatchOp(BakedOpRenderer& renderer, const PatchOp& op, const BakedOpState& state) {
533    // 9 patches are built for stretching - always filter
534    int textureFillFlags = TextureFillFlags::ForceFilter;
535    if (op.bitmap->colorType() == kAlpha_8_SkColorType) {
536        textureFillFlags |= TextureFillFlags::IsAlphaMaskTexture;
537    }
538
539    // TODO: avoid redoing the below work each frame:
540    AssetAtlas::Entry* entry = renderer.renderState().assetAtlas().getEntry(op.bitmap->pixelRef());
541    const Patch* mesh = renderer.caches().patchCache.get(
542            entry, op.bitmap->width(), op.bitmap->height(),
543            op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(), op.patch);
544
545    Texture* texture = entry ? entry->texture : renderer.caches().textureCache.get(op.bitmap);
546    if (CC_LIKELY(texture)) {
547        const AutoTexture autoCleanup(texture);
548        Glop glop;
549        GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
550                .setRoundRectClipState(state.roundRectClipState)
551                .setMeshPatchQuads(*mesh)
552                .setFillTexturePaint(*texture, textureFillFlags, op.paint, state.alpha)
553                .setTransform(state.computedState.transform, TransformFlags::None)
554                .setModelViewOffsetRectSnap(op.unmappedBounds.left, op.unmappedBounds.top,
555                        Rect(op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight()))
556                .build();
557        renderer.renderGlop(state, glop);
558    }
559}
560
561void BakedOpDispatcher::onPathOp(BakedOpRenderer& renderer, const PathOp& op, const BakedOpState& state) {
562    PathTexture* texture = renderer.caches().pathCache.get(op.path, op.paint);
563    const AutoTexture holder(texture);
564    if (CC_LIKELY(holder.texture)) {
565        renderPathTexture(renderer, state, *texture, op);
566    }
567}
568
569void BakedOpDispatcher::onPointsOp(BakedOpRenderer& renderer, const PointsOp& op, const BakedOpState& state) {
570    VertexBuffer buffer;
571    PathTessellator::tessellatePoints(op.points, op.floatCount, op.paint,
572            state.computedState.transform, buffer);
573    int displayFlags = op.paint->isAntiAlias() ? 0 : VertexBufferRenderFlags::Offset;
574    renderVertexBuffer(renderer, state, buffer, 0, 0, *(op.paint), displayFlags);
575}
576
577// See SkPaintDefaults.h
578#define SkPaintDefaults_MiterLimit SkIntToScalar(4)
579
580void BakedOpDispatcher::onRectOp(BakedOpRenderer& renderer, const RectOp& op, const BakedOpState& state) {
581    if (op.paint->getStyle() != SkPaint::kFill_Style) {
582        // only fill + default miter is supported by drawConvexPath, since others must handle joins
583        static_assert(SkPaintDefaults_MiterLimit == 4.0f, "Miter limit has changed");
584        if (CC_UNLIKELY(op.paint->getPathEffect() != nullptr
585                || op.paint->getStrokeJoin() != SkPaint::kMiter_Join
586                || op.paint->getStrokeMiter() != SkPaintDefaults_MiterLimit)) {
587             PathTexture* texture = renderer.caches().pathCache.getRect(
588                     op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(), op.paint);
589             const AutoTexture holder(texture);
590             if (CC_LIKELY(holder.texture)) {
591                 renderPathTexture(renderer, state, *texture, op);
592             }
593        } else {
594            SkPath path;
595            path.addRect(getBoundsOfFill(op));
596            renderConvexPath(renderer, state, path, *(op.paint));
597        }
598    } else {
599        if (op.paint->isAntiAlias() && !state.computedState.transform.isSimple()) {
600            SkPath path;
601            path.addRect(op.unmappedBounds.toSkRect());
602            renderConvexPath(renderer, state, path, *(op.paint));
603        } else {
604            // render simple unit quad, no tessellation required
605            Glop glop;
606            GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
607                    .setRoundRectClipState(state.roundRectClipState)
608                    .setMeshUnitQuad()
609                    .setFillPaint(*op.paint, state.alpha)
610                    .setTransform(state.computedState.transform, TransformFlags::None)
611                    .setModelViewMapUnitToRect(op.unmappedBounds)
612                    .build();
613            renderer.renderGlop(state, glop);
614        }
615    }
616}
617
618void BakedOpDispatcher::onRoundRectOp(BakedOpRenderer& renderer, const RoundRectOp& op, const BakedOpState& state) {
619    if (op.paint->getPathEffect() != nullptr) {
620        PathTexture* texture = renderer.caches().pathCache.getRoundRect(
621                op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(),
622                op.rx, op.ry, op.paint);
623        const AutoTexture holder(texture);
624        if (CC_LIKELY(holder.texture)) {
625            renderPathTexture(renderer, state, *texture, op);
626        }
627    } else {
628        const VertexBuffer* buffer = renderer.caches().tessellationCache.getRoundRect(
629                state.computedState.transform, *(op.paint),
630                op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(), op.rx, op.ry);
631        renderVertexBuffer(renderer, state, *buffer,
632                op.unmappedBounds.left, op.unmappedBounds.top, *(op.paint), 0);
633    }
634}
635
636static void renderShadow(BakedOpRenderer& renderer, const BakedOpState& state, float casterAlpha,
637        const VertexBuffer* ambientShadowVertexBuffer, const VertexBuffer* spotShadowVertexBuffer) {
638    SkPaint paint;
639    paint.setAntiAlias(true); // want to use AlphaVertex
640
641    // The caller has made sure casterAlpha > 0.
642    uint8_t ambientShadowAlpha = renderer.getLightInfo().ambientShadowAlpha;
643    if (CC_UNLIKELY(Properties::overrideAmbientShadowStrength >= 0)) {
644        ambientShadowAlpha = Properties::overrideAmbientShadowStrength;
645    }
646    if (ambientShadowVertexBuffer && ambientShadowAlpha > 0) {
647        paint.setAlpha((uint8_t)(casterAlpha * ambientShadowAlpha));
648        renderVertexBuffer(renderer, state, *ambientShadowVertexBuffer, 0, 0,
649                paint, VertexBufferRenderFlags::ShadowInterp);
650    }
651
652    uint8_t spotShadowAlpha = renderer.getLightInfo().spotShadowAlpha;
653    if (CC_UNLIKELY(Properties::overrideSpotShadowStrength >= 0)) {
654        spotShadowAlpha = Properties::overrideSpotShadowStrength;
655    }
656    if (spotShadowVertexBuffer && spotShadowAlpha > 0) {
657        paint.setAlpha((uint8_t)(casterAlpha * spotShadowAlpha));
658        renderVertexBuffer(renderer, state, *spotShadowVertexBuffer, 0, 0,
659                paint, VertexBufferRenderFlags::ShadowInterp);
660    }
661}
662
663void BakedOpDispatcher::onShadowOp(BakedOpRenderer& renderer, const ShadowOp& op, const BakedOpState& state) {
664    TessellationCache::vertexBuffer_pair_t buffers = op.shadowTask->getResult();
665    renderShadow(renderer, state, op.casterAlpha, buffers.first, buffers.second);
666}
667
668void BakedOpDispatcher::onSimpleRectsOp(BakedOpRenderer& renderer, const SimpleRectsOp& op, const BakedOpState& state) {
669    Glop glop;
670    GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
671            .setRoundRectClipState(state.roundRectClipState)
672            .setMeshIndexedQuads(&op.vertices[0], op.vertexCount / 4)
673            .setFillPaint(*op.paint, state.alpha)
674            .setTransform(state.computedState.transform, TransformFlags::None)
675            .setModelViewOffsetRect(0, 0, op.unmappedBounds)
676            .build();
677    renderer.renderGlop(state, glop);
678}
679
680void BakedOpDispatcher::onTextOp(BakedOpRenderer& renderer, const TextOp& op, const BakedOpState& state) {
681    renderTextOp(renderer, op, state, state.computedState.getClipIfNeeded(), TextRenderType::Flush);
682}
683
684void BakedOpDispatcher::onTextOnPathOp(BakedOpRenderer& renderer, const TextOnPathOp& op, const BakedOpState& state) {
685    // Note: can't trust clipSideFlags since we record with unmappedBounds == clip.
686    // TODO: respect clipSideFlags, once we record with bounds
687    auto renderTargetClip = state.computedState.clipState;
688
689    FontRenderer& fontRenderer = renderer.caches().fontRenderer.getFontRenderer();
690    fontRenderer.setFont(op.paint, SkMatrix::I());
691    fontRenderer.setTextureFiltering(true);
692
693    Rect layerBounds(FLT_MAX / 2.0f, FLT_MAX / 2.0f, FLT_MIN / 2.0f, FLT_MIN / 2.0f);
694
695    int alpha = PaintUtils::getAlphaDirect(op.paint) * state.alpha;
696    SkXfermode::Mode mode = PaintUtils::getXfermodeDirect(op.paint);
697    TextDrawFunctor functor(&renderer, &state, renderTargetClip,
698            0.0f, 0.0f, false, alpha, mode, op.paint);
699
700    bool mustDirtyRenderTarget = renderer.offscreenRenderTarget();
701    const Rect localSpaceClip = state.computedState.computeLocalSpaceClip();
702    if (fontRenderer.renderTextOnPath(op.paint, &localSpaceClip, op.glyphs, op.glyphCount,
703            op.path, op.hOffset, op.vOffset,
704            mustDirtyRenderTarget ? &layerBounds : nullptr, &functor)) {
705        if (mustDirtyRenderTarget) {
706            // manually dirty render target, since TextDrawFunctor won't
707            state.computedState.transform.mapRect(layerBounds);
708            renderer.dirtyRenderTarget(layerBounds);
709        }
710    }
711}
712
713void BakedOpDispatcher::onTextureLayerOp(BakedOpRenderer& renderer, const TextureLayerOp& op, const BakedOpState& state) {
714    const bool tryToSnap = !op.layer->getForceFilter();
715    float alpha = (op.layer->getAlpha() / 255.0f) * state.alpha;
716    Glop glop;
717    GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
718            .setRoundRectClipState(state.roundRectClipState)
719            .setMeshTexturedUvQuad(nullptr, Rect(0, 1, 1, 0)) // TODO: simplify with VBO
720            .setFillTextureLayer(*(op.layer), alpha)
721            .setTransform(state.computedState.transform, TransformFlags::None)
722            .setModelViewMapUnitToRectOptionalSnap(tryToSnap, Rect(op.layer->getWidth(), op.layer->getHeight()))
723            .build();
724    renderer.renderGlop(state, glop);
725}
726
727void BakedOpDispatcher::onLayerOp(BakedOpRenderer& renderer, const LayerOp& op, const BakedOpState& state) {
728    // Note that we don't use op->paint in this function - it's never set on a LayerOp
729    OffscreenBuffer* buffer = *op.layerHandle;
730
731    if (CC_UNLIKELY(!buffer)) {
732        // Layer was not allocated, which can occur if there were no draw ops inside. We draw the
733        // equivalent by drawing a rect with the same layer properties (alpha/xfer/filter).
734        SkPaint paint;
735        paint.setAlpha(op.alpha * 255);
736        paint.setXfermodeMode(op.mode);
737        paint.setColorFilter(op.colorFilter);
738        RectOp rectOp(op.unmappedBounds, op.localMatrix, op.localClip, &paint);
739        BakedOpDispatcher::onRectOp(renderer, rectOp, state);
740    } else {
741        float layerAlpha = op.alpha * state.alpha;
742        Glop glop;
743        GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
744                .setRoundRectClipState(state.roundRectClipState)
745                .setMeshTexturedIndexedVbo(buffer->vbo, buffer->elementCount)
746                .setFillLayer(buffer->texture, op.colorFilter, layerAlpha, op.mode, Blend::ModeOrderSwap::NoSwap)
747                .setTransform(state.computedState.transform, TransformFlags::None)
748                .setModelViewOffsetRectSnap(op.unmappedBounds.left, op.unmappedBounds.top,
749                        Rect(op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight()))
750                .build();
751        renderer.renderGlop(state, glop);
752
753        if (op.destroy) {
754            renderer.renderState().layerPool().putOrDelete(buffer);
755        }
756    }
757}
758
759void BakedOpDispatcher::onCopyToLayerOp(BakedOpRenderer& renderer, const CopyToLayerOp& op, const BakedOpState& state) {
760    LOG_ALWAYS_FATAL_IF(*(op.layerHandle) != nullptr, "layer already exists!");
761    *(op.layerHandle) = renderer.copyToLayer(state.computedState.clippedBounds);
762    LOG_ALWAYS_FATAL_IF(*op.layerHandle == nullptr, "layer copy failed");
763}
764
765void BakedOpDispatcher::onCopyFromLayerOp(BakedOpRenderer& renderer, const CopyFromLayerOp& op, const BakedOpState& state) {
766    LOG_ALWAYS_FATAL_IF(*op.layerHandle == nullptr, "no layer to draw underneath!");
767    if (!state.computedState.clippedBounds.isEmpty()) {
768        if (op.paint && op.paint->getAlpha() < 255) {
769            SkPaint layerPaint;
770            layerPaint.setAlpha(op.paint->getAlpha());
771            layerPaint.setXfermodeMode(SkXfermode::kDstIn_Mode);
772            layerPaint.setColorFilter(op.paint->getColorFilter());
773            RectOp rectOp(state.computedState.clippedBounds, Matrix4::identity(), nullptr, &layerPaint);
774            BakedOpDispatcher::onRectOp(renderer, rectOp, state);
775        }
776
777        OffscreenBuffer& layer = **(op.layerHandle);
778        auto mode = PaintUtils::getXfermodeDirect(op.paint);
779        Glop glop;
780        GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
781                .setRoundRectClipState(state.roundRectClipState)
782                .setMeshTexturedUvQuad(nullptr, layer.getTextureCoordinates())
783                .setFillLayer(layer.texture, nullptr, 1.0f, mode, Blend::ModeOrderSwap::Swap)
784                .setTransform(state.computedState.transform, TransformFlags::None)
785                .setModelViewMapUnitToRect(state.computedState.clippedBounds)
786                .build();
787        renderer.renderGlop(state, glop);
788    }
789    renderer.renderState().layerPool().putOrDelete(*op.layerHandle);
790}
791
792} // namespace uirenderer
793} // namespace android
794