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