GlopBuilder.cpp revision c2f31df8b3b9a237e9abffc59c61804ad8495073 
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#include "GlopBuilder.h"
17
18#include "Caches.h"
19#include "Glop.h"
20#include "Layer.h"
21#include "Matrix.h"
22#include "Patch.h"
23#include "PathCache.h"
24#include "renderstate/MeshState.h"
25#include "renderstate/RenderState.h"
26#include "SkiaShader.h"
27#include "Texture.h"
28#include "utils/PaintUtils.h"
29#include "VertexBuffer.h"
30
31#include <GLES2/gl2.h>
32#include <SkPaint.h>
33
34#define DEBUG_GLOP_BUILDER 0
35
36#if DEBUG_GLOP_BUILDER
37
38#define TRIGGER_STAGE(stageFlag) \
39    LOG_ALWAYS_FATAL_IF((stageFlag) & mStageFlags, "Stage %d cannot be run twice", (stageFlag)); \
40    mStageFlags = static_cast<StageFlags>(mStageFlags | (stageFlag))
41
42#define REQUIRE_STAGES(requiredFlags) \
43    LOG_ALWAYS_FATAL_IF((mStageFlags & (requiredFlags)) != (requiredFlags), \
44            "not prepared for current stage")
45
46#else
47
48#define TRIGGER_STAGE(stageFlag) ((void)0)
49#define REQUIRE_STAGES(requiredFlags) ((void)0)
50
51#endif
52
53namespace android {
54namespace uirenderer {
55
56static void setUnitQuadTextureCoords(Rect uvs, TextureVertex* quadVertex) {
57    quadVertex[0] = {0, 0, uvs.left, uvs.top};
58    quadVertex[1] = {1, 0, uvs.right, uvs.top};
59    quadVertex[2] = {0, 1, uvs.left, uvs.bottom};
60    quadVertex[3] = {1, 1, uvs.right, uvs.bottom};
61}
62
63GlopBuilder::GlopBuilder(RenderState& renderState, Caches& caches, Glop* outGlop)
64        : mRenderState(renderState)
65        , mCaches(caches)
66        , mShader(nullptr)
67        , mOutGlop(outGlop) {
68    mStageFlags = kInitialStage;
69}
70
71////////////////////////////////////////////////////////////////////////////////
72// Mesh
73////////////////////////////////////////////////////////////////////////////////
74
75GlopBuilder& GlopBuilder::setMeshTexturedIndexedVbo(GLuint vbo, GLsizei elementCount) {
76    TRIGGER_STAGE(kMeshStage);
77
78    mOutGlop->mesh.primitiveMode = GL_TRIANGLES;
79    mOutGlop->mesh.indices = { mRenderState.meshState().getQuadListIBO(), nullptr };
80    mOutGlop->mesh.vertices = {
81            vbo,
82            VertexAttribFlags::TextureCoord,
83            nullptr, (const void*) kMeshTextureOffset, nullptr,
84            kTextureVertexStride };
85    mOutGlop->mesh.elementCount = elementCount;
86    return *this;
87}
88
89GlopBuilder& GlopBuilder::setMeshUnitQuad() {
90    TRIGGER_STAGE(kMeshStage);
91
92    mOutGlop->mesh.primitiveMode = GL_TRIANGLE_STRIP;
93    mOutGlop->mesh.indices = { 0, nullptr };
94    mOutGlop->mesh.vertices = {
95            mRenderState.meshState().getUnitQuadVBO(),
96            VertexAttribFlags::None,
97            nullptr, nullptr, nullptr,
98            kTextureVertexStride };
99    mOutGlop->mesh.elementCount = 4;
100    return *this;
101}
102
103GlopBuilder& GlopBuilder::setMeshTexturedUnitQuad(const UvMapper* uvMapper) {
104    if (uvMapper) {
105        // can't use unit quad VBO, so build UV vertices manually
106        return setMeshTexturedUvQuad(uvMapper, Rect(1, 1));
107    }
108
109    TRIGGER_STAGE(kMeshStage);
110
111    mOutGlop->mesh.primitiveMode = GL_TRIANGLE_STRIP;
112    mOutGlop->mesh.indices = { 0, nullptr };
113    mOutGlop->mesh.vertices = {
114            mRenderState.meshState().getUnitQuadVBO(),
115            VertexAttribFlags::TextureCoord,
116            nullptr, (const void*) kMeshTextureOffset, nullptr,
117            kTextureVertexStride };
118    mOutGlop->mesh.elementCount = 4;
119    return *this;
120}
121
122GlopBuilder& GlopBuilder::setMeshTexturedUvQuad(const UvMapper* uvMapper, Rect uvs) {
123    TRIGGER_STAGE(kMeshStage);
124
125    if (CC_UNLIKELY(uvMapper)) {
126        uvMapper->map(uvs);
127    }
128    setUnitQuadTextureCoords(uvs, &mOutGlop->mesh.mappedVertices[0]);
129
130    const TextureVertex* textureVertex = mOutGlop->mesh.mappedVertices;
131    mOutGlop->mesh.primitiveMode = GL_TRIANGLE_STRIP;
132    mOutGlop->mesh.indices = { 0, nullptr };
133    mOutGlop->mesh.vertices = {
134            0,
135            VertexAttribFlags::TextureCoord,
136            &textureVertex[0].x, &textureVertex[0].u, nullptr,
137            kTextureVertexStride };
138    mOutGlop->mesh.elementCount = 4;
139    return *this;
140}
141
142GlopBuilder& GlopBuilder::setMeshIndexedQuads(Vertex* vertexData, int quadCount) {
143    TRIGGER_STAGE(kMeshStage);
144
145    mOutGlop->mesh.primitiveMode = GL_TRIANGLES;
146    mOutGlop->mesh.indices = { mRenderState.meshState().getQuadListIBO(), nullptr };
147    mOutGlop->mesh.vertices = {
148            0,
149            VertexAttribFlags::None,
150            vertexData, nullptr, nullptr,
151            kVertexStride };
152    mOutGlop->mesh.elementCount = 6 * quadCount;
153    return *this;
154}
155
156GlopBuilder& GlopBuilder::setMeshTexturedIndexedQuads(TextureVertex* vertexData, int elementCount) {
157    TRIGGER_STAGE(kMeshStage);
158
159    mOutGlop->mesh.primitiveMode = GL_TRIANGLES;
160    mOutGlop->mesh.indices = { mRenderState.meshState().getQuadListIBO(), nullptr };
161    mOutGlop->mesh.vertices = {
162            0,
163            VertexAttribFlags::TextureCoord,
164            &vertexData[0].x, &vertexData[0].u, nullptr,
165            kTextureVertexStride };
166    mOutGlop->mesh.elementCount = elementCount;
167    return *this;
168}
169
170GlopBuilder& GlopBuilder::setMeshColoredTexturedMesh(ColorTextureVertex* vertexData, int elementCount) {
171    TRIGGER_STAGE(kMeshStage);
172
173    mOutGlop->mesh.primitiveMode = GL_TRIANGLES;
174    mOutGlop->mesh.indices = { 0, nullptr };
175    mOutGlop->mesh.vertices = {
176            0,
177            VertexAttribFlags::TextureCoord | VertexAttribFlags::Color,
178            &vertexData[0].x, &vertexData[0].u, &vertexData[0].r,
179            kColorTextureVertexStride };
180    mOutGlop->mesh.elementCount = elementCount;
181    return *this;
182}
183
184GlopBuilder& GlopBuilder::setMeshVertexBuffer(const VertexBuffer& vertexBuffer) {
185    TRIGGER_STAGE(kMeshStage);
186
187    const VertexBuffer::MeshFeatureFlags flags = vertexBuffer.getMeshFeatureFlags();
188
189    bool alphaVertex = flags & VertexBuffer::kAlpha;
190    bool indices = flags & VertexBuffer::kIndices;
191
192    mOutGlop->mesh.primitiveMode = GL_TRIANGLE_STRIP;
193    mOutGlop->mesh.indices = { 0, vertexBuffer.getIndices() };
194    mOutGlop->mesh.vertices = {
195            0,
196            alphaVertex ? VertexAttribFlags::Alpha : VertexAttribFlags::None,
197            vertexBuffer.getBuffer(), nullptr, nullptr,
198            alphaVertex ? kAlphaVertexStride : kVertexStride };
199    mOutGlop->mesh.elementCount = indices
200                ? vertexBuffer.getIndexCount() : vertexBuffer.getVertexCount();
201    return *this;
202}
203
204GlopBuilder& GlopBuilder::setMeshPatchQuads(const Patch& patch) {
205    TRIGGER_STAGE(kMeshStage);
206
207    mOutGlop->mesh.primitiveMode = GL_TRIANGLES;
208    mOutGlop->mesh.indices = { mRenderState.meshState().getQuadListIBO(), nullptr };
209    mOutGlop->mesh.vertices = {
210            mCaches.patchCache.getMeshBuffer(),
211            VertexAttribFlags::TextureCoord,
212            (void*)patch.positionOffset, (void*)patch.textureOffset, nullptr,
213            kTextureVertexStride };
214    mOutGlop->mesh.elementCount = patch.indexCount;
215    return *this;
216}
217
218////////////////////////////////////////////////////////////////////////////////
219// Fill
220////////////////////////////////////////////////////////////////////////////////
221
222void GlopBuilder::setFill(int color, float alphaScale,
223        SkBlendMode mode, Blend::ModeOrderSwap modeUsage,
224        const SkShader* shader, const SkColorFilter* colorFilter) {
225    if (mode != SkBlendMode::kClear) {
226        if (!shader) {
227            FloatColor c;
228            c.set(color);
229            c.r *= alphaScale;
230            c.g *= alphaScale;
231            c.b *= alphaScale;
232            c.a *= alphaScale;
233            mOutGlop->fill.color = c;
234        } else {
235            float alpha = (SkColorGetA(color) / 255.0f) * alphaScale;
236            mOutGlop->fill.color = { 1, 1, 1, alpha };
237        }
238    } else {
239        mOutGlop->fill.color = { 0, 0, 0, 1 };
240    }
241
242    mOutGlop->blend = { GL_ZERO, GL_ZERO };
243    if (mOutGlop->fill.color.a < 1.0f
244            || (mOutGlop->mesh.vertices.attribFlags & VertexAttribFlags::Alpha)
245            || (mOutGlop->fill.texture.texture && mOutGlop->fill.texture.texture->blend)
246            || mOutGlop->roundRectClipState
247            || PaintUtils::isBlendedShader(shader)
248            || PaintUtils::isBlendedColorFilter(colorFilter)
249            || mode != SkBlendMode::kSrcOver) {
250        if (CC_LIKELY(mode <= SkBlendMode::kScreen)) {
251            Blend::getFactors(mode, modeUsage,
252                    &mOutGlop->blend.src, &mOutGlop->blend.dst);
253        } else {
254            // These blend modes are not supported by OpenGL directly and have
255            // to be implemented using shaders. Since the shader will perform
256            // the blending, don't enable GL blending off here
257            // If the blend mode cannot be implemented using shaders, fall
258            // back to the default SrcOver blend mode instead
259            if (CC_UNLIKELY(mCaches.extensions().hasFramebufferFetch())) {
260                mDescription.framebufferMode = mode;
261                mDescription.swapSrcDst = (modeUsage == Blend::ModeOrderSwap::Swap);
262                // blending in shader, don't enable
263            } else {
264                // unsupported
265                Blend::getFactors(SkBlendMode::kSrcOver, modeUsage,
266                        &mOutGlop->blend.src, &mOutGlop->blend.dst);
267            }
268        }
269    }
270    mShader = shader; // shader resolved in ::build()
271
272    if (colorFilter) {
273        SkColor color;
274        SkBlendMode bmode;
275        SkScalar srcColorMatrix[20];
276        if (colorFilter->asColorMode(&color, &bmode)) {
277            mOutGlop->fill.filterMode = mDescription.colorOp = ProgramDescription::ColorFilterMode::Blend;
278            mDescription.colorMode = bmode;
279            mOutGlop->fill.filter.color.set(color);
280        } else if (colorFilter->asColorMatrix(srcColorMatrix)) {
281            mOutGlop->fill.filterMode = mDescription.colorOp = ProgramDescription::ColorFilterMode::Matrix;
282
283            float* colorMatrix = mOutGlop->fill.filter.matrix.matrix;
284            memcpy(colorMatrix, srcColorMatrix, 4 * sizeof(float));
285            memcpy(&colorMatrix[4], &srcColorMatrix[5], 4 * sizeof(float));
286            memcpy(&colorMatrix[8], &srcColorMatrix[10], 4 * sizeof(float));
287            memcpy(&colorMatrix[12], &srcColorMatrix[15], 4 * sizeof(float));
288
289            // Skia uses the range [0..255] for the addition vector, but we need
290            // the [0..1] range to apply the vector in GLSL
291            float* colorVector = mOutGlop->fill.filter.matrix.vector;
292            colorVector[0] = EOCF(srcColorMatrix[4]  / 255.0f);
293            colorVector[1] = EOCF(srcColorMatrix[9]  / 255.0f);
294            colorVector[2] = EOCF(srcColorMatrix[14] / 255.0f);
295            colorVector[3] =      srcColorMatrix[19] / 255.0f;  // alpha is linear
296        } else {
297            LOG_ALWAYS_FATAL("unsupported ColorFilter");
298        }
299    } else {
300        mOutGlop->fill.filterMode = ProgramDescription::ColorFilterMode::None;
301    }
302}
303
304GlopBuilder& GlopBuilder::setFillTexturePaint(Texture& texture,
305        const int textureFillFlags, const SkPaint* paint, float alphaScale) {
306    TRIGGER_STAGE(kFillStage);
307    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
308
309    GLenum filter = (textureFillFlags & TextureFillFlags::ForceFilter)
310            ? GL_LINEAR : PaintUtils::getFilter(paint);
311    mOutGlop->fill.texture = { &texture, filter, GL_CLAMP_TO_EDGE, nullptr };
312
313    if (paint) {
314        int color = paint->getColor();
315        SkShader* shader = paint->getShader();
316
317        if (!(textureFillFlags & TextureFillFlags::IsAlphaMaskTexture)) {
318            // Texture defines color, so disable shaders, and reset all non-alpha color channels
319            color |= 0x00FFFFFF;
320            shader = nullptr;
321        }
322        setFill(color, alphaScale,
323                paint->getBlendMode(), Blend::ModeOrderSwap::NoSwap,
324                shader, paint->getColorFilter());
325    } else {
326        mOutGlop->fill.color = { alphaScale, alphaScale, alphaScale, alphaScale };
327
328        if (alphaScale < 1.0f
329                || (mOutGlop->mesh.vertices.attribFlags & VertexAttribFlags::Alpha)
330                || texture.blend
331                || mOutGlop->roundRectClipState) {
332            Blend::getFactors(SkBlendMode::kSrcOver, Blend::ModeOrderSwap::NoSwap,
333                    &mOutGlop->blend.src, &mOutGlop->blend.dst);
334        } else {
335            mOutGlop->blend = { GL_ZERO, GL_ZERO };
336        }
337    }
338
339    if (textureFillFlags & TextureFillFlags::IsAlphaMaskTexture) {
340        mDescription.modulate = mOutGlop->fill.color.isNotBlack();
341        mDescription.hasAlpha8Texture = true;
342    } else {
343        mDescription.modulate = mOutGlop->fill.color.a < 1.0f;
344    }
345    return *this;
346}
347
348GlopBuilder& GlopBuilder::setFillPaint(const SkPaint& paint, float alphaScale, bool shadowInterp) {
349    TRIGGER_STAGE(kFillStage);
350    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
351
352    if (CC_LIKELY(!shadowInterp)) {
353        mOutGlop->fill.texture = {
354                nullptr, GL_INVALID_ENUM, GL_INVALID_ENUM, nullptr };
355    } else {
356        mOutGlop->fill.texture = {
357                mCaches.textureState().getShadowLutTexture(),
358                GL_INVALID_ENUM, GL_INVALID_ENUM, nullptr };
359    }
360
361    setFill(paint.getColor(), alphaScale,
362            paint.getBlendMode(), Blend::ModeOrderSwap::NoSwap,
363            paint.getShader(), paint.getColorFilter());
364    mDescription.useShadowAlphaInterp = shadowInterp;
365    mDescription.modulate = mOutGlop->fill.color.a < 1.0f;
366    return *this;
367}
368
369GlopBuilder& GlopBuilder::setFillPathTexturePaint(PathTexture& texture,
370        const SkPaint& paint, float alphaScale) {
371    TRIGGER_STAGE(kFillStage);
372    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
373
374    //specify invalid filter/clamp, since these are always static for PathTextures
375    mOutGlop->fill.texture = { &texture, GL_INVALID_ENUM, GL_INVALID_ENUM, nullptr };
376
377    setFill(paint.getColor(), alphaScale,
378            paint.getBlendMode(), Blend::ModeOrderSwap::NoSwap,
379            paint.getShader(), paint.getColorFilter());
380
381    mDescription.hasAlpha8Texture = true;
382    mDescription.modulate = mOutGlop->fill.color.isNotBlack();
383    return *this;
384}
385
386GlopBuilder& GlopBuilder::setFillShadowTexturePaint(ShadowTexture& texture, int shadowColor,
387        const SkPaint& paint, float alphaScale) {
388    TRIGGER_STAGE(kFillStage);
389    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
390
391    //specify invalid filter/clamp, since these are always static for ShadowTextures
392    mOutGlop->fill.texture = { &texture, GL_INVALID_ENUM, GL_INVALID_ENUM, nullptr };
393
394    const int ALPHA_BITMASK = SK_ColorBLACK;
395    const int COLOR_BITMASK = ~ALPHA_BITMASK;
396    if ((shadowColor & ALPHA_BITMASK) == ALPHA_BITMASK) {
397        // shadow color is fully opaque: override its alpha with that of paint
398        shadowColor &= paint.getColor() | COLOR_BITMASK;
399    }
400
401    setFill(shadowColor, alphaScale,
402            paint.getBlendMode(), Blend::ModeOrderSwap::NoSwap,
403            paint.getShader(), paint.getColorFilter());
404
405    mDescription.hasAlpha8Texture = true;
406    mDescription.modulate = mOutGlop->fill.color.isNotBlack();
407    return *this;
408}
409
410GlopBuilder& GlopBuilder::setFillBlack() {
411    TRIGGER_STAGE(kFillStage);
412    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
413
414    mOutGlop->fill.texture = { nullptr, GL_INVALID_ENUM, GL_INVALID_ENUM, nullptr };
415    setFill(SK_ColorBLACK, 1.0f, SkBlendMode::kSrcOver, Blend::ModeOrderSwap::NoSwap,
416            nullptr, nullptr);
417    return *this;
418}
419
420GlopBuilder& GlopBuilder::setFillClear() {
421    TRIGGER_STAGE(kFillStage);
422    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
423
424    mOutGlop->fill.texture = { nullptr, GL_INVALID_ENUM, GL_INVALID_ENUM, nullptr };
425    setFill(SK_ColorBLACK, 1.0f, SkBlendMode::kClear, Blend::ModeOrderSwap::NoSwap,
426            nullptr, nullptr);
427    return *this;
428}
429
430GlopBuilder& GlopBuilder::setFillLayer(Texture& texture, const SkColorFilter* colorFilter,
431        float alpha, SkBlendMode mode, Blend::ModeOrderSwap modeUsage) {
432    TRIGGER_STAGE(kFillStage);
433    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
434
435    mOutGlop->fill.texture = { &texture, GL_LINEAR, GL_CLAMP_TO_EDGE, nullptr };
436
437    setFill(SK_ColorWHITE, alpha, mode, modeUsage, nullptr, colorFilter);
438
439    mDescription.modulate = mOutGlop->fill.color.a < 1.0f;
440    return *this;
441}
442
443GlopBuilder& GlopBuilder::setFillTextureLayer(Layer& layer, float alpha) {
444    TRIGGER_STAGE(kFillStage);
445    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
446
447    mOutGlop->fill.texture = { &(layer.getTexture()),
448            GL_LINEAR, GL_CLAMP_TO_EDGE, &layer.getTexTransform() };
449
450    setFill(SK_ColorWHITE, alpha, layer.getMode(), Blend::ModeOrderSwap::NoSwap,
451            nullptr, layer.getColorFilter());
452
453    mDescription.modulate = mOutGlop->fill.color.a < 1.0f;
454    mDescription.hasTextureTransform = true;
455    return *this;
456}
457
458GlopBuilder& GlopBuilder::setFillExternalTexture(Texture& texture, Matrix4& textureTransform) {
459    TRIGGER_STAGE(kFillStage);
460    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
461
462    mOutGlop->fill.texture = { &texture, GL_LINEAR, GL_CLAMP_TO_EDGE, &textureTransform };
463
464    setFill(SK_ColorWHITE, 1.0f, SkBlendMode::kSrc, Blend::ModeOrderSwap::NoSwap,
465            nullptr, nullptr);
466
467    mDescription.modulate = mOutGlop->fill.color.a < 1.0f;
468    mDescription.hasTextureTransform = true;
469    return *this;
470}
471
472GlopBuilder& GlopBuilder::setGammaCorrection(bool enabled) {
473    REQUIRE_STAGES(kFillStage);
474
475    mDescription.hasGammaCorrection = enabled;
476    return *this;
477}
478
479////////////////////////////////////////////////////////////////////////////////
480// Transform
481////////////////////////////////////////////////////////////////////////////////
482
483GlopBuilder& GlopBuilder::setTransform(const Matrix4& canvas, const int transformFlags) {
484    TRIGGER_STAGE(kTransformStage);
485
486    mOutGlop->transform.canvas = canvas;
487    mOutGlop->transform.transformFlags = transformFlags;
488    return *this;
489}
490
491////////////////////////////////////////////////////////////////////////////////
492// ModelView
493////////////////////////////////////////////////////////////////////////////////
494
495GlopBuilder& GlopBuilder::setModelViewMapUnitToRect(const Rect destination) {
496    TRIGGER_STAGE(kModelViewStage);
497
498    mOutGlop->transform.modelView.loadTranslate(destination.left, destination.top, 0.0f);
499    mOutGlop->transform.modelView.scale(destination.getWidth(), destination.getHeight(), 1.0f);
500    return *this;
501}
502
503GlopBuilder& GlopBuilder::setModelViewMapUnitToRectSnap(const Rect destination) {
504    TRIGGER_STAGE(kModelViewStage);
505    REQUIRE_STAGES(kTransformStage | kFillStage);
506
507    float left = destination.left;
508    float top = destination.top;
509
510    const Matrix4& meshTransform = mOutGlop->transform.meshTransform();
511    if (CC_LIKELY(meshTransform.isPureTranslate())) {
512        // snap by adjusting the model view matrix
513        const float translateX = meshTransform.getTranslateX();
514        const float translateY = meshTransform.getTranslateY();
515
516        left = (int) floorf(left + translateX + 0.5f) - translateX;
517        top = (int) floorf(top + translateY + 0.5f) - translateY;
518        mOutGlop->fill.texture.filter = GL_NEAREST;
519    }
520
521    mOutGlop->transform.modelView.loadTranslate(left, top, 0.0f);
522    mOutGlop->transform.modelView.scale(destination.getWidth(), destination.getHeight(), 1.0f);
523    return *this;
524}
525
526GlopBuilder& GlopBuilder::setModelViewOffsetRect(float offsetX, float offsetY, const Rect source) {
527    TRIGGER_STAGE(kModelViewStage);
528
529    mOutGlop->transform.modelView.loadTranslate(offsetX, offsetY, 0.0f);
530    return *this;
531}
532
533GlopBuilder& GlopBuilder::setModelViewOffsetRectSnap(float offsetX, float offsetY, const Rect source) {
534    TRIGGER_STAGE(kModelViewStage);
535    REQUIRE_STAGES(kTransformStage | kFillStage);
536
537    const Matrix4& meshTransform = mOutGlop->transform.meshTransform();
538    if (CC_LIKELY(meshTransform.isPureTranslate())) {
539        // snap by adjusting the model view matrix
540        const float translateX = meshTransform.getTranslateX();
541        const float translateY = meshTransform.getTranslateY();
542
543        offsetX = (int) floorf(offsetX + translateX + source.left + 0.5f) - translateX - source.left;
544        offsetY = (int) floorf(offsetY + translateY + source.top + 0.5f) - translateY - source.top;
545        mOutGlop->fill.texture.filter = GL_NEAREST;
546    }
547
548    mOutGlop->transform.modelView.loadTranslate(offsetX, offsetY, 0.0f);
549    return *this;
550}
551
552////////////////////////////////////////////////////////////////////////////////
553// RoundRectClip
554////////////////////////////////////////////////////////////////////////////////
555
556GlopBuilder& GlopBuilder::setRoundRectClipState(const RoundRectClipState* roundRectClipState) {
557    TRIGGER_STAGE(kRoundRectClipStage);
558
559    mOutGlop->roundRectClipState = roundRectClipState;
560    mDescription.hasRoundRectClip = roundRectClipState != nullptr;
561    return *this;
562}
563
564////////////////////////////////////////////////////////////////////////////////
565// Build
566////////////////////////////////////////////////////////////////////////////////
567
568void verify(const ProgramDescription& description, const Glop& glop) {
569    if (glop.fill.texture.texture != nullptr) {
570        LOG_ALWAYS_FATAL_IF(((description.hasTexture && description.hasExternalTexture)
571                        || (!description.hasTexture
572                                && !description.hasExternalTexture
573                                && !description.useShadowAlphaInterp)
574                        || ((glop.mesh.vertices.attribFlags & VertexAttribFlags::TextureCoord) == 0
575                                && !description.useShadowAlphaInterp)),
576                "Texture %p, hT%d, hET %d, attribFlags %x",
577                glop.fill.texture.texture,
578                description.hasTexture, description.hasExternalTexture,
579                glop.mesh.vertices.attribFlags);
580    } else {
581        LOG_ALWAYS_FATAL_IF((description.hasTexture
582                        || description.hasExternalTexture
583                        || ((glop.mesh.vertices.attribFlags & VertexAttribFlags::TextureCoord) != 0)),
584                "No texture, hT%d, hET %d, attribFlags %x",
585                description.hasTexture, description.hasExternalTexture,
586                glop.mesh.vertices.attribFlags);
587    }
588
589    if ((glop.mesh.vertices.attribFlags & VertexAttribFlags::Alpha)
590            && glop.mesh.vertices.bufferObject) {
591        LOG_ALWAYS_FATAL("VBO and alpha attributes are not currently compatible");
592    }
593
594    if (description.hasTextureTransform != (glop.fill.texture.textureTransform != nullptr)) {
595        LOG_ALWAYS_FATAL("Texture transform incorrectly specified");
596    }
597}
598
599void GlopBuilder::build() {
600    REQUIRE_STAGES(kAllStages);
601    if (mOutGlop->mesh.vertices.attribFlags & VertexAttribFlags::TextureCoord) {
602        if (mOutGlop->fill.texture.texture->target() == GL_TEXTURE_2D) {
603            mDescription.hasTexture = true;
604        } else {
605            mDescription.hasExternalTexture = true;
606        }
607    }
608
609    mDescription.hasColors = mOutGlop->mesh.vertices.attribFlags & VertexAttribFlags::Color;
610    mDescription.hasVertexAlpha = mOutGlop->mesh.vertices.attribFlags & VertexAttribFlags::Alpha;
611
612    // Enable debug highlight when what we're about to draw is tested against
613    // the stencil buffer and if stencil highlight debugging is on
614    mDescription.hasDebugHighlight = !Properties::debugOverdraw
615            && Properties::debugStencilClip == StencilClipDebug::ShowHighlight
616            && mRenderState.stencil().isTestEnabled();
617
618    // serialize shader info into ShaderData
619    GLuint textureUnit = mOutGlop->fill.texture.texture ? 1 : 0;
620
621    if (CC_LIKELY(!mShader)) {
622        mOutGlop->fill.skiaShaderData.skiaShaderType = kNone_SkiaShaderType;
623    } else {
624        Matrix4 shaderMatrix;
625        if (mOutGlop->transform.transformFlags & TransformFlags::MeshIgnoresCanvasTransform) {
626            // canvas level transform was built into the modelView and geometry,
627            // so the shader matrix must reverse this
628            shaderMatrix.loadInverse(mOutGlop->transform.canvas);
629            shaderMatrix.multiply(mOutGlop->transform.modelView);
630        } else {
631            shaderMatrix = mOutGlop->transform.modelView;
632        }
633        SkiaShader::store(mCaches, *mShader, shaderMatrix,
634                &textureUnit, &mDescription, &(mOutGlop->fill.skiaShaderData));
635    }
636
637    // duplicates ProgramCache's definition of color uniform presence
638    const bool singleColor = !mDescription.hasTexture
639            && !mDescription.hasExternalTexture
640            && !mDescription.hasGradient
641            && !mDescription.hasBitmap;
642    mOutGlop->fill.colorEnabled = mDescription.modulate || singleColor;
643
644    verify(mDescription, *mOutGlop);
645
646    // Final step: populate program and map bounds into render target space
647    mOutGlop->fill.program = mCaches.programCache.get(mDescription);
648}
649
650void GlopBuilder::dump(const Glop& glop) {
651    ALOGD("Glop Mesh");
652    const Glop::Mesh& mesh = glop.mesh;
653    ALOGD("    primitive mode: %d", mesh.primitiveMode);
654    ALOGD("    indices: buffer obj %x, indices %p", mesh.indices.bufferObject, mesh.indices.indices);
655
656    const Glop::Mesh::Vertices& vertices = glop.mesh.vertices;
657    ALOGD("    vertices: buffer obj %x, flags %x, pos %p, tex %p, clr %p, stride %d",
658            vertices.bufferObject, vertices.attribFlags,
659            vertices.position, vertices.texCoord, vertices.color, vertices.stride);
660    ALOGD("    element count: %d", mesh.elementCount);
661
662    ALOGD("Glop Fill");
663    const Glop::Fill& fill = glop.fill;
664    ALOGD("    program %p", fill.program);
665    if (fill.texture.texture) {
666        ALOGD("    texture %p, target %d, filter %d, clamp %d",
667                fill.texture.texture, fill.texture.texture->target(),
668                fill.texture.filter, fill.texture.clamp);
669        if (fill.texture.textureTransform) {
670            fill.texture.textureTransform->dump("texture transform");
671        }
672    }
673    ALOGD_IF(fill.colorEnabled, "    color (argb) %.2f %.2f %.2f %.2f",
674            fill.color.a, fill.color.r, fill.color.g, fill.color.b);
675    ALOGD_IF(fill.filterMode != ProgramDescription::ColorFilterMode::None,
676            "    filterMode %d", (int)fill.filterMode);
677    ALOGD_IF(fill.skiaShaderData.skiaShaderType, "    shader type %d",
678            fill.skiaShaderData.skiaShaderType);
679
680    ALOGD("Glop transform");
681    glop.transform.modelView.dump("  model view");
682    glop.transform.canvas.dump("  canvas");
683    ALOGD_IF(glop.transform.transformFlags, "  transformFlags 0x%x", glop.transform.transformFlags);
684
685    ALOGD_IF(glop.roundRectClipState, "Glop RRCS %p", glop.roundRectClipState);
686
687    ALOGD("Glop blend %d %d", glop.blend.src, glop.blend.dst);
688}
689
690} /* namespace uirenderer */
691} /* namespace android */
692