GlopBuilder.cpp revision 138c21fbec12bead3c7ca1f181c3fd35542ccb00 
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 "Matrix.h"
21#include "Patch.h"
22#include "renderstate/MeshState.h"
23#include "renderstate/RenderState.h"
24#include "SkiaShader.h"
25#include "Texture.h"
26#include "utils/PaintUtils.h"
27#include "VertexBuffer.h"
28
29#include <GLES2/gl2.h>
30#include <SkPaint.h>
31
32#define DEBUG_GLOP_BUILDER 0
33
34#if DEBUG_GLOP_BUILDER
35
36#define TRIGGER_STAGE(stageFlag) \
37    LOG_ALWAYS_FATAL_IF((stageFlag) & mStageFlags, "Stage %d cannot be run twice", (stageFlag)); \
38    mStageFlags = static_cast<StageFlags>(mStageFlags | (stageFlag))
39
40#define REQUIRE_STAGES(requiredFlags) \
41    LOG_ALWAYS_FATAL_IF((mStageFlags & (requiredFlags)) != (requiredFlags), \
42            "not prepared for current stage")
43
44#else
45
46#define TRIGGER_STAGE(stageFlag) ((void)0)
47#define REQUIRE_STAGES(requiredFlags) ((void)0)
48
49#endif
50
51namespace android {
52namespace uirenderer {
53
54static void setUnitQuadTextureCoords(Rect uvs, TextureVertex* quadVertex) {
55    quadVertex[0] = {0, 0, uvs.left, uvs.top};
56    quadVertex[1] = {1, 0, uvs.right, uvs.top};
57    quadVertex[2] = {0, 1, uvs.left, uvs.bottom};
58    quadVertex[3] = {1, 1, uvs.right, uvs.bottom};
59}
60
61GlopBuilder::GlopBuilder(RenderState& renderState, Caches& caches, Glop* outGlop)
62        : mRenderState(renderState)
63        , mCaches(caches)
64        , mShader(nullptr)
65        , mOutGlop(outGlop) {
66    mStageFlags = kInitialStage;
67}
68
69////////////////////////////////////////////////////////////////////////////////
70// Mesh
71////////////////////////////////////////////////////////////////////////////////
72
73GlopBuilder& 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 = {
79            vbo,
80            VertexAttribFlags::TextureCoord,
81            nullptr, (const void*) kMeshTextureOffset, nullptr,
82            kTextureVertexStride };
83    mOutGlop->mesh.elementCount = elementCount;
84    return *this;
85}
86
87GlopBuilder& GlopBuilder::setMeshUnitQuad() {
88    TRIGGER_STAGE(kMeshStage);
89
90    mOutGlop->mesh.primitiveMode = GL_TRIANGLE_STRIP;
91    mOutGlop->mesh.indices = { 0, nullptr };
92    mOutGlop->mesh.vertices = {
93            mRenderState.meshState().getUnitQuadVBO(),
94            VertexAttribFlags::None,
95            nullptr, nullptr, nullptr,
96            kTextureVertexStride };
97    mOutGlop->mesh.elementCount = 4;
98    return *this;
99}
100
101GlopBuilder& GlopBuilder::setMeshTexturedUnitQuad(const UvMapper* uvMapper) {
102    if (uvMapper) {
103        // can't use unit quad VBO, so build UV vertices manually
104        return setMeshTexturedUvQuad(uvMapper, Rect(1, 1));
105    }
106
107    TRIGGER_STAGE(kMeshStage);
108
109    mOutGlop->mesh.primitiveMode = GL_TRIANGLE_STRIP;
110    mOutGlop->mesh.indices = { 0, nullptr };
111    mOutGlop->mesh.vertices = {
112            mRenderState.meshState().getUnitQuadVBO(),
113            VertexAttribFlags::TextureCoord,
114            nullptr, (const void*) kMeshTextureOffset, nullptr,
115            kTextureVertexStride };
116    mOutGlop->mesh.elementCount = 4;
117    return *this;
118}
119
120GlopBuilder& 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 = {
132            0,
133            VertexAttribFlags::TextureCoord,
134            &textureVertex[0].x, &textureVertex[0].u, nullptr,
135            kTextureVertexStride };
136    mOutGlop->mesh.elementCount = 4;
137    return *this;
138}
139
140GlopBuilder& GlopBuilder::setMeshIndexedQuads(Vertex* vertexData, int quadCount) {
141    TRIGGER_STAGE(kMeshStage);
142
143    mOutGlop->mesh.primitiveMode = GL_TRIANGLES;
144    mOutGlop->mesh.indices = { mRenderState.meshState().getQuadListIBO(), nullptr };
145    mOutGlop->mesh.vertices = {
146            0,
147            VertexAttribFlags::None,
148            vertexData, nullptr, nullptr,
149            kVertexStride };
150    mOutGlop->mesh.elementCount = 6 * quadCount;
151    return *this;
152}
153
154GlopBuilder& GlopBuilder::setMeshTexturedIndexedQuads(TextureVertex* vertexData, int elementCount) {
155    TRIGGER_STAGE(kMeshStage);
156
157    mOutGlop->mesh.primitiveMode = GL_TRIANGLES;
158    mOutGlop->mesh.indices = { mRenderState.meshState().getQuadListIBO(), nullptr };
159    mOutGlop->mesh.vertices = {
160            0,
161            VertexAttribFlags::TextureCoord,
162            &vertexData[0].x, &vertexData[0].u, nullptr,
163            kTextureVertexStride };
164    mOutGlop->mesh.elementCount = elementCount;
165    return *this;
166}
167
168GlopBuilder& GlopBuilder::setMeshTexturedMesh(TextureVertex* vertexData, int elementCount) {
169    TRIGGER_STAGE(kMeshStage);
170
171    mOutGlop->mesh.primitiveMode = GL_TRIANGLES;
172    mOutGlop->mesh.indices = { 0, nullptr };
173    mOutGlop->mesh.vertices = {
174            0,
175            VertexAttribFlags::TextureCoord,
176            &vertexData[0].x, &vertexData[0].u, nullptr,
177            kTextureVertexStride };
178    mOutGlop->mesh.elementCount = elementCount;
179    return *this;
180}
181
182GlopBuilder& GlopBuilder::setMeshColoredTexturedMesh(ColorTextureVertex* vertexData, int elementCount) {
183    TRIGGER_STAGE(kMeshStage);
184
185    mOutGlop->mesh.primitiveMode = GL_TRIANGLES;
186    mOutGlop->mesh.indices = { 0, nullptr };
187    mOutGlop->mesh.vertices = {
188            0,
189            VertexAttribFlags::TextureCoord | VertexAttribFlags::Color,
190            &vertexData[0].x, &vertexData[0].u, &vertexData[0].r,
191            kColorTextureVertexStride };
192    mOutGlop->mesh.elementCount = elementCount;
193    return *this;
194}
195
196GlopBuilder& GlopBuilder::setMeshVertexBuffer(const VertexBuffer& vertexBuffer) {
197    TRIGGER_STAGE(kMeshStage);
198
199    const VertexBuffer::MeshFeatureFlags flags = vertexBuffer.getMeshFeatureFlags();
200
201    bool alphaVertex = flags & VertexBuffer::kAlpha;
202    bool indices = flags & VertexBuffer::kIndices;
203
204    mOutGlop->mesh.primitiveMode = GL_TRIANGLE_STRIP;
205    mOutGlop->mesh.indices = { 0, vertexBuffer.getIndices() };
206    mOutGlop->mesh.vertices = {
207            0,
208            alphaVertex ? VertexAttribFlags::Alpha : VertexAttribFlags::None,
209            vertexBuffer.getBuffer(), nullptr, nullptr,
210            alphaVertex ? kAlphaVertexStride : kVertexStride };
211    mOutGlop->mesh.elementCount = indices
212                ? vertexBuffer.getIndexCount() : vertexBuffer.getVertexCount();
213    return *this;
214}
215
216GlopBuilder& GlopBuilder::setMeshPatchQuads(const Patch& patch) {
217    TRIGGER_STAGE(kMeshStage);
218
219    mOutGlop->mesh.primitiveMode = GL_TRIANGLES;
220    mOutGlop->mesh.indices = { mRenderState.meshState().getQuadListIBO(), nullptr };
221    mOutGlop->mesh.vertices = {
222            mCaches.patchCache.getMeshBuffer(),
223            VertexAttribFlags::TextureCoord,
224            (void*)patch.positionOffset, (void*)patch.textureOffset, nullptr,
225            kTextureVertexStride };
226    mOutGlop->mesh.elementCount = patch.indexCount;
227    return *this;
228}
229
230////////////////////////////////////////////////////////////////////////////////
231// Fill
232////////////////////////////////////////////////////////////////////////////////
233
234void GlopBuilder::setFill(int color, float alphaScale,
235        SkXfermode::Mode mode, Blend::ModeOrderSwap modeUsage,
236        const SkShader* shader, const SkColorFilter* colorFilter) {
237    if (mode != SkXfermode::kClear_Mode) {
238        float alpha = (SkColorGetA(color) / 255.0f) * alphaScale;
239        if (!shader) {
240            float colorScale = alpha / 255.0f;
241            mOutGlop->fill.color = {
242                    colorScale * SkColorGetR(color),
243                    colorScale * SkColorGetG(color),
244                    colorScale * SkColorGetB(color),
245                    alpha
246            };
247        } else {
248            mOutGlop->fill.color = { 1, 1, 1, alpha };
249        }
250    } else {
251        mOutGlop->fill.color = { 0, 0, 0, 1 };
252    }
253
254    mOutGlop->blend = { GL_ZERO, GL_ZERO };
255    if (mOutGlop->fill.color.a < 1.0f
256            || (mOutGlop->mesh.vertices.attribFlags & VertexAttribFlags::Alpha)
257            || (mOutGlop->fill.texture.texture && mOutGlop->fill.texture.texture->blend)
258            || mOutGlop->roundRectClipState
259            || PaintUtils::isBlendedShader(shader)
260            || PaintUtils::isBlendedColorFilter(colorFilter)
261            || mode != SkXfermode::kSrcOver_Mode) {
262        if (CC_LIKELY(mode <= SkXfermode::kScreen_Mode)) {
263            Blend::getFactors(mode, modeUsage,
264                    &mOutGlop->blend.src, &mOutGlop->blend.dst);
265        } else {
266            // These blend modes are not supported by OpenGL directly and have
267            // to be implemented using shaders. Since the shader will perform
268            // the blending, don't enable GL blending off here
269            // If the blend mode cannot be implemented using shaders, fall
270            // back to the default SrcOver blend mode instead
271            if (CC_UNLIKELY(mCaches.extensions().hasFramebufferFetch())) {
272                mDescription.framebufferMode = mode;
273                mDescription.swapSrcDst = (modeUsage == Blend::ModeOrderSwap::Swap);
274                // blending in shader, don't enable
275            } else {
276                // unsupported
277                Blend::getFactors(SkXfermode::kSrcOver_Mode, modeUsage,
278                        &mOutGlop->blend.src, &mOutGlop->blend.dst);
279            }
280        }
281    }
282    mShader = shader; // shader resolved in ::build()
283
284    if (colorFilter) {
285        SkColor color;
286        SkXfermode::Mode mode;
287        SkScalar srcColorMatrix[20];
288        if (colorFilter->asColorMode(&color, &mode)) {
289            mOutGlop->fill.filterMode = mDescription.colorOp = ProgramDescription::ColorFilterMode::Blend;
290            mDescription.colorMode = mode;
291
292            const float alpha = SkColorGetA(color) / 255.0f;
293            float colorScale = alpha / 255.0f;
294            mOutGlop->fill.filter.color = {
295                    colorScale * SkColorGetR(color),
296                    colorScale * SkColorGetG(color),
297                    colorScale * SkColorGetB(color),
298                    alpha,
299            };
300        } else if (colorFilter->asColorMatrix(srcColorMatrix)) {
301            mOutGlop->fill.filterMode = mDescription.colorOp = ProgramDescription::ColorFilterMode::Matrix;
302
303            float* colorMatrix = mOutGlop->fill.filter.matrix.matrix;
304            memcpy(colorMatrix, srcColorMatrix, 4 * sizeof(float));
305            memcpy(&colorMatrix[4], &srcColorMatrix[5], 4 * sizeof(float));
306            memcpy(&colorMatrix[8], &srcColorMatrix[10], 4 * sizeof(float));
307            memcpy(&colorMatrix[12], &srcColorMatrix[15], 4 * sizeof(float));
308
309            // Skia uses the range [0..255] for the addition vector, but we need
310            // the [0..1] range to apply the vector in GLSL
311            float* colorVector = mOutGlop->fill.filter.matrix.vector;
312            colorVector[0] = srcColorMatrix[4] / 255.0f;
313            colorVector[1] = srcColorMatrix[9] / 255.0f;
314            colorVector[2] = srcColorMatrix[14] / 255.0f;
315            colorVector[3] = srcColorMatrix[19] / 255.0f;
316        } else {
317            LOG_ALWAYS_FATAL("unsupported ColorFilter");
318        }
319    } else {
320        mOutGlop->fill.filterMode = ProgramDescription::ColorFilterMode::None;
321    }
322}
323
324GlopBuilder& GlopBuilder::setFillTexturePaint(Texture& texture,
325        const int textureFillFlags, const SkPaint* paint, float alphaScale) {
326    TRIGGER_STAGE(kFillStage);
327    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
328
329    GLenum filter = (textureFillFlags & TextureFillFlags::ForceFilter)
330            ? GL_LINEAR : PaintUtils::getFilter(paint);
331    mOutGlop->fill.texture = { &texture,
332            GL_TEXTURE_2D, filter, GL_CLAMP_TO_EDGE, nullptr };
333
334    if (paint) {
335        int color = paint->getColor();
336        SkShader* shader = paint->getShader();
337
338        if (!(textureFillFlags & TextureFillFlags::IsAlphaMaskTexture)) {
339            // Texture defines color, so disable shaders, and reset all non-alpha color channels
340            color |= 0x00FFFFFF;
341            shader = nullptr;
342        }
343        setFill(color, alphaScale,
344                PaintUtils::getXfermode(paint->getXfermode()), Blend::ModeOrderSwap::NoSwap,
345                shader, paint->getColorFilter());
346    } else {
347        mOutGlop->fill.color = { alphaScale, alphaScale, alphaScale, alphaScale };
348
349        if (alphaScale < 1.0f
350                || (mOutGlop->mesh.vertices.attribFlags & VertexAttribFlags::Alpha)
351                || texture.blend
352                || mOutGlop->roundRectClipState) {
353            Blend::getFactors(SkXfermode::kSrcOver_Mode, Blend::ModeOrderSwap::NoSwap,
354                    &mOutGlop->blend.src, &mOutGlop->blend.dst);
355        } else {
356            mOutGlop->blend = { GL_ZERO, GL_ZERO };
357        }
358    }
359
360    if (textureFillFlags & TextureFillFlags::IsAlphaMaskTexture) {
361        mDescription.modulate = mOutGlop->fill.color.isNotBlack();
362        mDescription.hasAlpha8Texture = true;
363    } else {
364        mDescription.modulate = mOutGlop->fill.color.a < 1.0f;
365    }
366    return *this;
367}
368
369GlopBuilder& GlopBuilder::setFillPaint(const SkPaint& paint, float alphaScale, bool shadowInterp) {
370    TRIGGER_STAGE(kFillStage);
371    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
372
373    if (CC_LIKELY(!shadowInterp)) {
374        mOutGlop->fill.texture = {
375                nullptr, GL_INVALID_ENUM, GL_INVALID_ENUM, GL_INVALID_ENUM, nullptr };
376    } else {
377        mOutGlop->fill.texture = {
378                mCaches.textureState().getShadowLutTexture(), GL_TEXTURE_2D,
379                GL_INVALID_ENUM, GL_INVALID_ENUM, nullptr };
380    }
381
382    setFill(paint.getColor(), alphaScale,
383            PaintUtils::getXfermode(paint.getXfermode()), Blend::ModeOrderSwap::NoSwap,
384            paint.getShader(), paint.getColorFilter());
385    mDescription.useShadowAlphaInterp = shadowInterp;
386    mDescription.modulate = mOutGlop->fill.color.a < 1.0f;
387    return *this;
388}
389
390GlopBuilder& GlopBuilder::setFillPathTexturePaint(PathTexture& texture,
391        const SkPaint& paint, float alphaScale) {
392    TRIGGER_STAGE(kFillStage);
393    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
394
395    //specify invalid filter/clamp, since these are always static for PathTextures
396    mOutGlop->fill.texture = { &texture, GL_TEXTURE_2D, GL_INVALID_ENUM, GL_INVALID_ENUM, nullptr };
397
398    setFill(paint.getColor(), alphaScale,
399            PaintUtils::getXfermode(paint.getXfermode()), Blend::ModeOrderSwap::NoSwap,
400            paint.getShader(), paint.getColorFilter());
401
402    mDescription.hasAlpha8Texture = true;
403    mDescription.modulate = mOutGlop->fill.color.isNotBlack();
404    return *this;
405}
406
407GlopBuilder& GlopBuilder::setFillShadowTexturePaint(ShadowTexture& texture, int shadowColor,
408        const SkPaint& paint, float alphaScale) {
409    TRIGGER_STAGE(kFillStage);
410    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
411
412    //specify invalid filter/clamp, since these are always static for ShadowTextures
413    mOutGlop->fill.texture = { &texture, GL_TEXTURE_2D, GL_INVALID_ENUM, GL_INVALID_ENUM, nullptr };
414
415    const int ALPHA_BITMASK = SK_ColorBLACK;
416    const int COLOR_BITMASK = ~ALPHA_BITMASK;
417    if ((shadowColor & ALPHA_BITMASK) == ALPHA_BITMASK) {
418        // shadow color is fully opaque: override its alpha with that of paint
419        shadowColor &= paint.getColor() | COLOR_BITMASK;
420    }
421
422    setFill(shadowColor, alphaScale,
423            PaintUtils::getXfermode(paint.getXfermode()), Blend::ModeOrderSwap::NoSwap,
424            paint.getShader(), paint.getColorFilter());
425
426    mDescription.hasAlpha8Texture = true;
427    mDescription.modulate = mOutGlop->fill.color.isNotBlack();
428    return *this;
429}
430
431GlopBuilder& GlopBuilder::setFillBlack() {
432    TRIGGER_STAGE(kFillStage);
433    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
434
435    mOutGlop->fill.texture = { nullptr, GL_INVALID_ENUM, GL_INVALID_ENUM, GL_INVALID_ENUM, nullptr };
436    setFill(SK_ColorBLACK, 1.0f, SkXfermode::kSrcOver_Mode, Blend::ModeOrderSwap::NoSwap,
437            nullptr, nullptr);
438    return *this;
439}
440
441GlopBuilder& GlopBuilder::setFillClear() {
442    TRIGGER_STAGE(kFillStage);
443    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
444
445    mOutGlop->fill.texture = { nullptr, GL_INVALID_ENUM, GL_INVALID_ENUM, GL_INVALID_ENUM, nullptr };
446    setFill(SK_ColorBLACK, 1.0f, SkXfermode::kClear_Mode, Blend::ModeOrderSwap::NoSwap,
447            nullptr, nullptr);
448    return *this;
449}
450
451GlopBuilder& GlopBuilder::setFillLayer(Texture& texture, const SkColorFilter* colorFilter,
452        float alpha, SkXfermode::Mode mode, Blend::ModeOrderSwap modeUsage) {
453    TRIGGER_STAGE(kFillStage);
454    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
455
456    mOutGlop->fill.texture = { &texture,
457            GL_TEXTURE_2D, GL_LINEAR, GL_CLAMP_TO_EDGE, nullptr };
458
459    setFill(SK_ColorWHITE, alpha, mode, modeUsage, nullptr, colorFilter);
460
461    mDescription.modulate = mOutGlop->fill.color.a < 1.0f;
462    return *this;
463}
464
465GlopBuilder& GlopBuilder::setFillTextureLayer(Layer& layer, float alpha) {
466    TRIGGER_STAGE(kFillStage);
467    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
468
469    mOutGlop->fill.texture = { &(layer.getTexture()),
470            layer.getRenderTarget(), GL_LINEAR, GL_CLAMP_TO_EDGE, &layer.getTexTransform() };
471
472    setFill(SK_ColorWHITE, alpha, layer.getMode(), Blend::ModeOrderSwap::NoSwap,
473            nullptr, layer.getColorFilter());
474
475    mDescription.modulate = mOutGlop->fill.color.a < 1.0f;
476    mDescription.hasTextureTransform = true;
477    return *this;
478}
479
480GlopBuilder& GlopBuilder::setFillExternalTexture(Texture& texture) {
481    TRIGGER_STAGE(kFillStage);
482    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
483
484    mOutGlop->fill.texture = { &texture,
485            GL_TEXTURE_EXTERNAL_OES, GL_LINEAR, GL_CLAMP_TO_EDGE,
486            nullptr };
487
488    setFill(SK_ColorWHITE, 1.0f, SkXfermode::kSrc_Mode, Blend::ModeOrderSwap::NoSwap,
489            nullptr, nullptr);
490
491    mDescription.modulate = mOutGlop->fill.color.a < 1.0f;
492    return *this;
493}
494
495////////////////////////////////////////////////////////////////////////////////
496// Transform
497////////////////////////////////////////////////////////////////////////////////
498
499GlopBuilder& GlopBuilder::setTransform(const Matrix4& canvas, const int transformFlags) {
500    TRIGGER_STAGE(kTransformStage);
501
502    mOutGlop->transform.canvas = canvas;
503    mOutGlop->transform.transformFlags = transformFlags;
504    return *this;
505}
506
507////////////////////////////////////////////////////////////////////////////////
508// ModelView
509////////////////////////////////////////////////////////////////////////////////
510
511GlopBuilder& GlopBuilder::setModelViewMapUnitToRect(const Rect destination) {
512    TRIGGER_STAGE(kModelViewStage);
513
514    mOutGlop->transform.modelView.loadTranslate(destination.left, destination.top, 0.0f);
515    mOutGlop->transform.modelView.scale(destination.getWidth(), destination.getHeight(), 1.0f);
516#if !HWUI_NEW_OPS
517    mOutGlop->bounds = destination;
518#endif
519    return *this;
520}
521
522GlopBuilder& GlopBuilder::setModelViewMapUnitToRectSnap(const Rect destination) {
523    TRIGGER_STAGE(kModelViewStage);
524    REQUIRE_STAGES(kTransformStage | kFillStage);
525
526    float left = destination.left;
527    float top = destination.top;
528
529    const Matrix4& meshTransform = mOutGlop->transform.meshTransform();
530    if (CC_LIKELY(meshTransform.isPureTranslate())) {
531        // snap by adjusting the model view matrix
532        const float translateX = meshTransform.getTranslateX();
533        const float translateY = meshTransform.getTranslateY();
534
535        left = (int) floorf(left + translateX + 0.5f) - translateX;
536        top = (int) floorf(top + translateY + 0.5f) - translateY;
537        mOutGlop->fill.texture.filter = GL_NEAREST;
538    }
539
540    mOutGlop->transform.modelView.loadTranslate(left, top, 0.0f);
541    mOutGlop->transform.modelView.scale(destination.getWidth(), destination.getHeight(), 1.0f);
542#if !HWUI_NEW_OPS
543    mOutGlop->bounds = destination;
544#endif
545    return *this;
546}
547
548GlopBuilder& GlopBuilder::setModelViewOffsetRect(float offsetX, float offsetY, const Rect source) {
549    TRIGGER_STAGE(kModelViewStage);
550
551    mOutGlop->transform.modelView.loadTranslate(offsetX, offsetY, 0.0f);
552#if !HWUI_NEW_OPS
553    mOutGlop->bounds = source;
554    mOutGlop->bounds.translate(offsetX, offsetY);
555#endif
556    return *this;
557}
558
559GlopBuilder& GlopBuilder::setModelViewOffsetRectSnap(float offsetX, float offsetY, const Rect source) {
560    TRIGGER_STAGE(kModelViewStage);
561    REQUIRE_STAGES(kTransformStage | kFillStage);
562
563    const Matrix4& meshTransform = mOutGlop->transform.meshTransform();
564    if (CC_LIKELY(meshTransform.isPureTranslate())) {
565        // snap by adjusting the model view matrix
566        const float translateX = meshTransform.getTranslateX();
567        const float translateY = meshTransform.getTranslateY();
568
569        offsetX = (int) floorf(offsetX + translateX + source.left + 0.5f) - translateX - source.left;
570        offsetY = (int) floorf(offsetY + translateY + source.top + 0.5f) - translateY - source.top;
571        mOutGlop->fill.texture.filter = GL_NEAREST;
572    }
573
574    mOutGlop->transform.modelView.loadTranslate(offsetX, offsetY, 0.0f);
575#if !HWUI_NEW_OPS
576    mOutGlop->bounds = source;
577    mOutGlop->bounds.translate(offsetX, offsetY);
578#endif
579    return *this;
580}
581
582////////////////////////////////////////////////////////////////////////////////
583// RoundRectClip
584////////////////////////////////////////////////////////////////////////////////
585
586GlopBuilder& GlopBuilder::setRoundRectClipState(const RoundRectClipState* roundRectClipState) {
587    TRIGGER_STAGE(kRoundRectClipStage);
588
589    mOutGlop->roundRectClipState = roundRectClipState;
590    mDescription.hasRoundRectClip = roundRectClipState != nullptr;
591    return *this;
592}
593
594////////////////////////////////////////////////////////////////////////////////
595// Build
596////////////////////////////////////////////////////////////////////////////////
597
598void verify(const ProgramDescription& description, const Glop& glop) {
599    if (glop.fill.texture.texture != nullptr) {
600        LOG_ALWAYS_FATAL_IF(((description.hasTexture && description.hasExternalTexture)
601                        || (!description.hasTexture
602                                && !description.hasExternalTexture
603                                && !description.useShadowAlphaInterp)
604                        || ((glop.mesh.vertices.attribFlags & VertexAttribFlags::TextureCoord) == 0
605                                && !description.useShadowAlphaInterp)),
606                "Texture %p, hT%d, hET %d, attribFlags %x",
607                glop.fill.texture.texture,
608                description.hasTexture, description.hasExternalTexture,
609                glop.mesh.vertices.attribFlags);
610    } else {
611        LOG_ALWAYS_FATAL_IF((description.hasTexture
612                        || description.hasExternalTexture
613                        || ((glop.mesh.vertices.attribFlags & VertexAttribFlags::TextureCoord) != 0)),
614                "No texture, hT%d, hET %d, attribFlags %x",
615                description.hasTexture, description.hasExternalTexture,
616                glop.mesh.vertices.attribFlags);
617    }
618
619    if ((glop.mesh.vertices.attribFlags & VertexAttribFlags::Alpha)
620            && glop.mesh.vertices.bufferObject) {
621        LOG_ALWAYS_FATAL("VBO and alpha attributes are not currently compatible");
622    }
623
624    if (description.hasTextureTransform != (glop.fill.texture.textureTransform != nullptr)) {
625        LOG_ALWAYS_FATAL("Texture transform incorrectly specified");
626    }
627}
628
629void GlopBuilder::build() {
630    REQUIRE_STAGES(kAllStages);
631    if (mOutGlop->mesh.vertices.attribFlags & VertexAttribFlags::TextureCoord) {
632        if (mOutGlop->fill.texture.target == GL_TEXTURE_2D) {
633            mDescription.hasTexture = true;
634        } else {
635            mDescription.hasExternalTexture = true;
636        }
637    }
638
639    mDescription.hasColors = mOutGlop->mesh.vertices.attribFlags & VertexAttribFlags::Color;
640    mDescription.hasVertexAlpha = mOutGlop->mesh.vertices.attribFlags & VertexAttribFlags::Alpha;
641
642    // Enable debug highlight when what we're about to draw is tested against
643    // the stencil buffer and if stencil highlight debugging is on
644    mDescription.hasDebugHighlight = !Properties::debugOverdraw
645            && Properties::debugStencilClip == StencilClipDebug::ShowHighlight
646            && mRenderState.stencil().isTestEnabled();
647
648    // serialize shader info into ShaderData
649    GLuint textureUnit = mOutGlop->fill.texture.texture ? 1 : 0;
650
651    if (CC_LIKELY(!mShader)) {
652        mOutGlop->fill.skiaShaderData.skiaShaderType = kNone_SkiaShaderType;
653    } else {
654        Matrix4 shaderMatrix;
655        if (mOutGlop->transform.transformFlags & TransformFlags::MeshIgnoresCanvasTransform) {
656            // canvas level transform was built into the modelView and geometry,
657            // so the shader matrix must reverse this
658            shaderMatrix.loadInverse(mOutGlop->transform.canvas);
659            shaderMatrix.multiply(mOutGlop->transform.modelView);
660        } else {
661            shaderMatrix = mOutGlop->transform.modelView;
662        }
663        SkiaShader::store(mCaches, *mShader, shaderMatrix,
664                &textureUnit, &mDescription, &(mOutGlop->fill.skiaShaderData));
665    }
666
667    // duplicates ProgramCache's definition of color uniform presence
668    const bool singleColor = !mDescription.hasTexture
669            && !mDescription.hasExternalTexture
670            && !mDescription.hasGradient
671            && !mDescription.hasBitmap;
672    mOutGlop->fill.colorEnabled = mDescription.modulate || singleColor;
673
674    verify(mDescription, *mOutGlop);
675
676    // Final step: populate program and map bounds into render target space
677    mOutGlop->fill.program = mCaches.programCache.get(mDescription);
678#if !HWUI_NEW_OPS
679    mOutGlop->transform.meshTransform().mapRect(mOutGlop->bounds);
680#endif
681}
682
683void GlopBuilder::dump(const Glop& glop) {
684    ALOGD("Glop Mesh");
685    const Glop::Mesh& mesh = glop.mesh;
686    ALOGD("    primitive mode: %d", mesh.primitiveMode);
687    ALOGD("    indices: buffer obj %x, indices %p", mesh.indices.bufferObject, mesh.indices.indices);
688
689    const Glop::Mesh::Vertices& vertices = glop.mesh.vertices;
690    ALOGD("    vertices: buffer obj %x, flags %x, pos %p, tex %p, clr %p, stride %d",
691            vertices.bufferObject, vertices.attribFlags,
692            vertices.position, vertices.texCoord, vertices.color, vertices.stride);
693    ALOGD("    element count: %d", mesh.elementCount);
694
695    ALOGD("Glop Fill");
696    const Glop::Fill& fill = glop.fill;
697    ALOGD("    program %p", fill.program);
698    if (fill.texture.texture) {
699        ALOGD("    texture %p, target %d, filter %d, clamp %d",
700                fill.texture.texture, fill.texture.target, fill.texture.filter, fill.texture.clamp);
701        if (fill.texture.textureTransform) {
702            fill.texture.textureTransform->dump("texture transform");
703        }
704    }
705    ALOGD_IF(fill.colorEnabled, "    color (argb) %.2f %.2f %.2f %.2f",
706            fill.color.a, fill.color.r, fill.color.g, fill.color.b);
707    ALOGD_IF(fill.filterMode != ProgramDescription::ColorFilterMode::None,
708            "    filterMode %d", (int)fill.filterMode);
709    ALOGD_IF(fill.skiaShaderData.skiaShaderType, "    shader type %d",
710            fill.skiaShaderData.skiaShaderType);
711
712    ALOGD("Glop transform");
713    glop.transform.modelView.dump("  model view");
714    glop.transform.canvas.dump("  canvas");
715    ALOGD_IF(glop.transform.transformFlags, "  transformFlags 0x%x", glop.transform.transformFlags);
716
717    ALOGD_IF(glop.roundRectClipState, "Glop RRCS %p", glop.roundRectClipState);
718
719    ALOGD("Glop blend %d %d", glop.blend.src, glop.blend.dst);
720#if !HWUI_NEW_OPS
721    ALOGD("Glop bounds " RECT_STRING, RECT_ARGS(glop.bounds));
722#endif
723}
724
725} /* namespace uirenderer */
726} /* namespace android */
727