GlopBuilder.cpp revision 2f69d6d4fdd4994912e5515016421625d1e1c4ec 
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, bool shadowInterp) {
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
214    mDescription.useShadowAlphaInterp = shadowInterp;
215    return *this;
216}
217
218GlopBuilder& GlopBuilder::setMeshPatchQuads(const Patch& patch) {
219    TRIGGER_STAGE(kMeshStage);
220
221    mOutGlop->mesh.primitiveMode = GL_TRIANGLES;
222    mOutGlop->mesh.indices = { mRenderState.meshState().getQuadListIBO(), nullptr };
223    mOutGlop->mesh.vertices = {
224            mCaches.patchCache.getMeshBuffer(),
225            VertexAttribFlags::TextureCoord,
226            (void*)patch.positionOffset, (void*)patch.textureOffset, nullptr,
227            kTextureVertexStride };
228    mOutGlop->mesh.elementCount = patch.indexCount;
229    return *this;
230}
231
232////////////////////////////////////////////////////////////////////////////////
233// Fill
234////////////////////////////////////////////////////////////////////////////////
235
236void GlopBuilder::setFill(int color, float alphaScale,
237        SkXfermode::Mode mode, Blend::ModeOrderSwap modeUsage,
238        const SkShader* shader, const SkColorFilter* colorFilter) {
239    if (mode != SkXfermode::kClear_Mode) {
240        float alpha = (SkColorGetA(color) / 255.0f) * alphaScale;
241        if (!shader) {
242            float colorScale = alpha / 255.0f;
243            mOutGlop->fill.color = {
244                    colorScale * SkColorGetR(color),
245                    colorScale * SkColorGetG(color),
246                    colorScale * SkColorGetB(color),
247                    alpha
248            };
249        } else {
250            mOutGlop->fill.color = { 1, 1, 1, alpha };
251        }
252    } else {
253        mOutGlop->fill.color = { 0, 0, 0, 1 };
254    }
255
256    mOutGlop->blend = { GL_ZERO, GL_ZERO };
257    if (mOutGlop->fill.color.a < 1.0f
258            || (mOutGlop->mesh.vertices.attribFlags & VertexAttribFlags::Alpha)
259            || (mOutGlop->fill.texture.texture && mOutGlop->fill.texture.texture->blend)
260            || mOutGlop->roundRectClipState
261            || PaintUtils::isBlendedShader(shader)
262            || PaintUtils::isBlendedColorFilter(colorFilter)
263            || mode != SkXfermode::kSrcOver_Mode) {
264        if (CC_LIKELY(mode <= SkXfermode::kScreen_Mode)) {
265            Blend::getFactors(mode, modeUsage,
266                    &mOutGlop->blend.src, &mOutGlop->blend.dst);
267        } else {
268            // These blend modes are not supported by OpenGL directly and have
269            // to be implemented using shaders. Since the shader will perform
270            // the blending, don't enable GL blending off here
271            // If the blend mode cannot be implemented using shaders, fall
272            // back to the default SrcOver blend mode instead
273            if (CC_UNLIKELY(mCaches.extensions().hasFramebufferFetch())) {
274                mDescription.framebufferMode = mode;
275                mDescription.swapSrcDst = (modeUsage == Blend::ModeOrderSwap::Swap);
276                // blending in shader, don't enable
277            } else {
278                // unsupported
279                Blend::getFactors(SkXfermode::kSrcOver_Mode, modeUsage,
280                        &mOutGlop->blend.src, &mOutGlop->blend.dst);
281            }
282        }
283    }
284    mShader = shader; // shader resolved in ::build()
285
286    if (colorFilter) {
287        SkColor color;
288        SkXfermode::Mode mode;
289        SkScalar srcColorMatrix[20];
290        if (colorFilter->asColorMode(&color, &mode)) {
291            mOutGlop->fill.filterMode = mDescription.colorOp = ProgramDescription::ColorFilterMode::Blend;
292            mDescription.colorMode = mode;
293
294            const float alpha = SkColorGetA(color) / 255.0f;
295            float colorScale = alpha / 255.0f;
296            mOutGlop->fill.filter.color = {
297                    colorScale * SkColorGetR(color),
298                    colorScale * SkColorGetG(color),
299                    colorScale * SkColorGetB(color),
300                    alpha,
301            };
302        } else if (colorFilter->asColorMatrix(srcColorMatrix)) {
303            mOutGlop->fill.filterMode = mDescription.colorOp = ProgramDescription::ColorFilterMode::Matrix;
304
305            float* colorMatrix = mOutGlop->fill.filter.matrix.matrix;
306            memcpy(colorMatrix, srcColorMatrix, 4 * sizeof(float));
307            memcpy(&colorMatrix[4], &srcColorMatrix[5], 4 * sizeof(float));
308            memcpy(&colorMatrix[8], &srcColorMatrix[10], 4 * sizeof(float));
309            memcpy(&colorMatrix[12], &srcColorMatrix[15], 4 * sizeof(float));
310
311            // Skia uses the range [0..255] for the addition vector, but we need
312            // the [0..1] range to apply the vector in GLSL
313            float* colorVector = mOutGlop->fill.filter.matrix.vector;
314            colorVector[0] = srcColorMatrix[4] / 255.0f;
315            colorVector[1] = srcColorMatrix[9] / 255.0f;
316            colorVector[2] = srcColorMatrix[14] / 255.0f;
317            colorVector[3] = srcColorMatrix[19] / 255.0f;
318        } else {
319            LOG_ALWAYS_FATAL("unsupported ColorFilter");
320        }
321    } else {
322        mOutGlop->fill.filterMode = ProgramDescription::ColorFilterMode::None;
323    }
324}
325
326GlopBuilder& GlopBuilder::setFillTexturePaint(Texture& texture,
327        const int textureFillFlags, const SkPaint* paint, float alphaScale) {
328    TRIGGER_STAGE(kFillStage);
329    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
330
331    GLenum filter = (textureFillFlags & TextureFillFlags::ForceFilter)
332            ? GL_LINEAR : PaintUtils::getFilter(paint);
333    mOutGlop->fill.texture = { &texture,
334            GL_TEXTURE_2D, filter, GL_CLAMP_TO_EDGE, nullptr };
335
336    if (paint) {
337        int color = paint->getColor();
338        SkShader* shader = paint->getShader();
339
340        if (!(textureFillFlags & TextureFillFlags::IsAlphaMaskTexture)) {
341            // Texture defines color, so disable shaders, and reset all non-alpha color channels
342            color |= 0x00FFFFFF;
343            shader = nullptr;
344        }
345        setFill(color, alphaScale,
346                PaintUtils::getXfermode(paint->getXfermode()), Blend::ModeOrderSwap::NoSwap,
347                shader, paint->getColorFilter());
348    } else {
349        mOutGlop->fill.color = { alphaScale, alphaScale, alphaScale, alphaScale };
350
351        if (alphaScale < 1.0f
352                || (mOutGlop->mesh.vertices.attribFlags & VertexAttribFlags::Alpha)
353                || texture.blend
354                || mOutGlop->roundRectClipState) {
355            Blend::getFactors(SkXfermode::kSrcOver_Mode, Blend::ModeOrderSwap::NoSwap,
356                    &mOutGlop->blend.src, &mOutGlop->blend.dst);
357        } else {
358            mOutGlop->blend = { GL_ZERO, GL_ZERO };
359        }
360    }
361
362    if (textureFillFlags & TextureFillFlags::IsAlphaMaskTexture) {
363        mDescription.modulate = mOutGlop->fill.color.isNotBlack();
364        mDescription.hasAlpha8Texture = true;
365    } else {
366        mDescription.modulate = mOutGlop->fill.color.a < 1.0f;
367    }
368    return *this;
369}
370
371GlopBuilder& GlopBuilder::setFillPaint(const SkPaint& paint, float alphaScale) {
372    TRIGGER_STAGE(kFillStage);
373    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
374
375    mOutGlop->fill.texture = { nullptr, GL_INVALID_ENUM, GL_INVALID_ENUM, GL_INVALID_ENUM, nullptr };
376
377    setFill(paint.getColor(), alphaScale,
378            PaintUtils::getXfermode(paint.getXfermode()), Blend::ModeOrderSwap::NoSwap,
379            paint.getShader(), paint.getColorFilter());
380    mDescription.modulate = mOutGlop->fill.color.a < 1.0f;
381    return *this;
382}
383
384GlopBuilder& GlopBuilder::setFillPathTexturePaint(PathTexture& texture,
385        const SkPaint& paint, float alphaScale) {
386    TRIGGER_STAGE(kFillStage);
387    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
388
389    //specify invalid filter/clamp, since these are always static for PathTextures
390    mOutGlop->fill.texture = { &texture, GL_TEXTURE_2D, GL_INVALID_ENUM, GL_INVALID_ENUM, nullptr };
391
392    setFill(paint.getColor(), alphaScale,
393            PaintUtils::getXfermode(paint.getXfermode()), Blend::ModeOrderSwap::NoSwap,
394            paint.getShader(), paint.getColorFilter());
395
396    mDescription.hasAlpha8Texture = true;
397    mDescription.modulate = mOutGlop->fill.color.isNotBlack();
398    return *this;
399}
400
401GlopBuilder& GlopBuilder::setFillShadowTexturePaint(ShadowTexture& texture, int shadowColor,
402        const SkPaint& paint, float alphaScale) {
403    TRIGGER_STAGE(kFillStage);
404    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
405
406    //specify invalid filter/clamp, since these are always static for ShadowTextures
407    mOutGlop->fill.texture = { &texture, GL_TEXTURE_2D, GL_INVALID_ENUM, GL_INVALID_ENUM, nullptr };
408
409    const int ALPHA_BITMASK = SK_ColorBLACK;
410    const int COLOR_BITMASK = ~ALPHA_BITMASK;
411    if ((shadowColor & ALPHA_BITMASK) == ALPHA_BITMASK) {
412        // shadow color is fully opaque: override its alpha with that of paint
413        shadowColor &= paint.getColor() | COLOR_BITMASK;
414    }
415
416    setFill(shadowColor, alphaScale,
417            PaintUtils::getXfermode(paint.getXfermode()), Blend::ModeOrderSwap::NoSwap,
418            paint.getShader(), paint.getColorFilter());
419
420    mDescription.hasAlpha8Texture = true;
421    mDescription.modulate = mOutGlop->fill.color.isNotBlack();
422    return *this;
423}
424
425GlopBuilder& GlopBuilder::setFillBlack() {
426    TRIGGER_STAGE(kFillStage);
427    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
428
429    mOutGlop->fill.texture = { nullptr, GL_INVALID_ENUM, GL_INVALID_ENUM, GL_INVALID_ENUM, nullptr };
430    setFill(SK_ColorBLACK, 1.0f, SkXfermode::kSrcOver_Mode, Blend::ModeOrderSwap::NoSwap,
431            nullptr, nullptr);
432    return *this;
433}
434
435GlopBuilder& GlopBuilder::setFillClear() {
436    TRIGGER_STAGE(kFillStage);
437    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
438
439    mOutGlop->fill.texture = { nullptr, GL_INVALID_ENUM, GL_INVALID_ENUM, GL_INVALID_ENUM, nullptr };
440    setFill(SK_ColorBLACK, 1.0f, SkXfermode::kClear_Mode, Blend::ModeOrderSwap::NoSwap,
441            nullptr, nullptr);
442    return *this;
443}
444
445GlopBuilder& GlopBuilder::setFillLayer(Texture& texture, const SkColorFilter* colorFilter,
446        float alpha, SkXfermode::Mode mode, Blend::ModeOrderSwap modeUsage) {
447    TRIGGER_STAGE(kFillStage);
448    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
449
450    mOutGlop->fill.texture = { &texture,
451            GL_TEXTURE_2D, GL_LINEAR, GL_CLAMP_TO_EDGE, nullptr };
452
453    setFill(SK_ColorWHITE, alpha, mode, modeUsage, nullptr, colorFilter);
454
455    mDescription.modulate = mOutGlop->fill.color.a < 1.0f;
456    return *this;
457}
458
459GlopBuilder& GlopBuilder::setFillTextureLayer(Layer& layer, float alpha) {
460    TRIGGER_STAGE(kFillStage);
461    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
462
463    mOutGlop->fill.texture = { &(layer.getTexture()),
464            layer.getRenderTarget(), GL_LINEAR, GL_CLAMP_TO_EDGE, &layer.getTexTransform() };
465
466    setFill(SK_ColorWHITE, alpha, layer.getMode(), Blend::ModeOrderSwap::NoSwap,
467            nullptr, layer.getColorFilter());
468
469    mDescription.modulate = mOutGlop->fill.color.a < 1.0f;
470    mDescription.hasTextureTransform = true;
471    return *this;
472}
473
474GlopBuilder& GlopBuilder::setFillExternalTexture(Texture& texture, Matrix4& textureTransform) {
475    TRIGGER_STAGE(kFillStage);
476    REQUIRE_STAGES(kMeshStage | kRoundRectClipStage);
477
478    mOutGlop->fill.texture = { &texture,
479            GL_TEXTURE_EXTERNAL_OES, GL_LINEAR, GL_CLAMP_TO_EDGE,
480            &textureTransform };
481
482    setFill(SK_ColorWHITE, 1.0f, SkXfermode::kSrc_Mode, Blend::ModeOrderSwap::NoSwap,
483            nullptr, nullptr);
484
485    mDescription.modulate = mOutGlop->fill.color.a < 1.0f;
486    mDescription.hasTextureTransform = true;
487    return *this;
488}
489
490////////////////////////////////////////////////////////////////////////////////
491// Transform
492////////////////////////////////////////////////////////////////////////////////
493
494GlopBuilder& GlopBuilder::setTransform(const Matrix4& canvas, const int transformFlags) {
495    TRIGGER_STAGE(kTransformStage);
496
497    mOutGlop->transform.canvas = canvas;
498    mOutGlop->transform.transformFlags = transformFlags;
499    return *this;
500}
501
502////////////////////////////////////////////////////////////////////////////////
503// ModelView
504////////////////////////////////////////////////////////////////////////////////
505
506GlopBuilder& GlopBuilder::setModelViewMapUnitToRect(const Rect destination) {
507    TRIGGER_STAGE(kModelViewStage);
508
509    mOutGlop->transform.modelView.loadTranslate(destination.left, destination.top, 0.0f);
510    mOutGlop->transform.modelView.scale(destination.getWidth(), destination.getHeight(), 1.0f);
511#if !HWUI_NEW_OPS
512    mOutGlop->bounds = destination;
513#endif
514    return *this;
515}
516
517GlopBuilder& GlopBuilder::setModelViewMapUnitToRectSnap(const Rect destination) {
518    TRIGGER_STAGE(kModelViewStage);
519    REQUIRE_STAGES(kTransformStage | kFillStage);
520
521    float left = destination.left;
522    float top = destination.top;
523
524    const Matrix4& meshTransform = mOutGlop->transform.meshTransform();
525    if (CC_LIKELY(meshTransform.isPureTranslate())) {
526        // snap by adjusting the model view matrix
527        const float translateX = meshTransform.getTranslateX();
528        const float translateY = meshTransform.getTranslateY();
529
530        left = (int) floorf(left + translateX + 0.5f) - translateX;
531        top = (int) floorf(top + translateY + 0.5f) - translateY;
532        mOutGlop->fill.texture.filter = GL_NEAREST;
533    }
534
535    mOutGlop->transform.modelView.loadTranslate(left, top, 0.0f);
536    mOutGlop->transform.modelView.scale(destination.getWidth(), destination.getHeight(), 1.0f);
537#if !HWUI_NEW_OPS
538    mOutGlop->bounds = destination;
539#endif
540    return *this;
541}
542
543GlopBuilder& GlopBuilder::setModelViewOffsetRect(float offsetX, float offsetY, const Rect source) {
544    TRIGGER_STAGE(kModelViewStage);
545
546    mOutGlop->transform.modelView.loadTranslate(offsetX, offsetY, 0.0f);
547#if !HWUI_NEW_OPS
548    mOutGlop->bounds = source;
549    mOutGlop->bounds.translate(offsetX, offsetY);
550#endif
551    return *this;
552}
553
554GlopBuilder& GlopBuilder::setModelViewOffsetRectSnap(float offsetX, float offsetY, const Rect source) {
555    TRIGGER_STAGE(kModelViewStage);
556    REQUIRE_STAGES(kTransformStage | kFillStage);
557
558    const Matrix4& meshTransform = mOutGlop->transform.meshTransform();
559    if (CC_LIKELY(meshTransform.isPureTranslate())) {
560        // snap by adjusting the model view matrix
561        const float translateX = meshTransform.getTranslateX();
562        const float translateY = meshTransform.getTranslateY();
563
564        offsetX = (int) floorf(offsetX + translateX + source.left + 0.5f) - translateX - source.left;
565        offsetY = (int) floorf(offsetY + translateY + source.top + 0.5f) - translateY - source.top;
566        mOutGlop->fill.texture.filter = GL_NEAREST;
567    }
568
569    mOutGlop->transform.modelView.loadTranslate(offsetX, offsetY, 0.0f);
570#if !HWUI_NEW_OPS
571    mOutGlop->bounds = source;
572    mOutGlop->bounds.translate(offsetX, offsetY);
573#endif
574    return *this;
575}
576
577////////////////////////////////////////////////////////////////////////////////
578// RoundRectClip
579////////////////////////////////////////////////////////////////////////////////
580
581GlopBuilder& GlopBuilder::setRoundRectClipState(const RoundRectClipState* roundRectClipState) {
582    TRIGGER_STAGE(kRoundRectClipStage);
583
584    mOutGlop->roundRectClipState = roundRectClipState;
585    mDescription.hasRoundRectClip = roundRectClipState != nullptr;
586    return *this;
587}
588
589////////////////////////////////////////////////////////////////////////////////
590// Build
591////////////////////////////////////////////////////////////////////////////////
592
593void verify(const ProgramDescription& description, const Glop& glop) {
594    if (glop.fill.texture.texture != nullptr) {
595        LOG_ALWAYS_FATAL_IF(((description.hasTexture && description.hasExternalTexture)
596                        || (!description.hasTexture && !description.hasExternalTexture)
597                        || ((glop.mesh.vertices.attribFlags & VertexAttribFlags::TextureCoord) == 0)),
598                "Texture %p, hT%d, hET %d, attribFlags %x",
599                glop.fill.texture.texture,
600                description.hasTexture, description.hasExternalTexture,
601                glop.mesh.vertices.attribFlags);
602    } else {
603        LOG_ALWAYS_FATAL_IF((description.hasTexture
604                        || description.hasExternalTexture
605                        || ((glop.mesh.vertices.attribFlags & VertexAttribFlags::TextureCoord) != 0)),
606                "No texture, hT%d, hET %d, attribFlags %x",
607                description.hasTexture, description.hasExternalTexture,
608                glop.mesh.vertices.attribFlags);
609    }
610
611    if ((glop.mesh.vertices.attribFlags & VertexAttribFlags::Alpha)
612            && glop.mesh.vertices.bufferObject) {
613        LOG_ALWAYS_FATAL("VBO and alpha attributes are not currently compatible");
614    }
615
616    if (description.hasTextureTransform != (glop.fill.texture.textureTransform != nullptr)) {
617        LOG_ALWAYS_FATAL("Texture transform incorrectly specified");
618    }
619}
620
621void GlopBuilder::build() {
622    REQUIRE_STAGES(kAllStages);
623    if (mOutGlop->mesh.vertices.attribFlags & VertexAttribFlags::TextureCoord) {
624        if (mOutGlop->fill.texture.target == GL_TEXTURE_2D) {
625            mDescription.hasTexture = true;
626        } else {
627            mDescription.hasExternalTexture = true;
628        }
629    }
630
631    mDescription.hasColors = mOutGlop->mesh.vertices.attribFlags & VertexAttribFlags::Color;
632    mDescription.hasVertexAlpha = mOutGlop->mesh.vertices.attribFlags & VertexAttribFlags::Alpha;
633
634    // Enable debug highlight when what we're about to draw is tested against
635    // the stencil buffer and if stencil highlight debugging is on
636    mDescription.hasDebugHighlight = !Properties::debugOverdraw
637            && Properties::debugStencilClip == StencilClipDebug::ShowHighlight
638            && mRenderState.stencil().isTestEnabled();
639
640    // serialize shader info into ShaderData
641    GLuint textureUnit = mOutGlop->fill.texture.texture ? 1 : 0;
642
643    if (CC_LIKELY(!mShader)) {
644        mOutGlop->fill.skiaShaderData.skiaShaderType = kNone_SkiaShaderType;
645    } else {
646        Matrix4 shaderMatrix;
647        if (mOutGlop->transform.transformFlags & TransformFlags::MeshIgnoresCanvasTransform) {
648            // canvas level transform was built into the modelView and geometry,
649            // so the shader matrix must reverse this
650            shaderMatrix.loadInverse(mOutGlop->transform.canvas);
651            shaderMatrix.multiply(mOutGlop->transform.modelView);
652        } else {
653            shaderMatrix = mOutGlop->transform.modelView;
654        }
655        SkiaShader::store(mCaches, *mShader, shaderMatrix,
656                &textureUnit, &mDescription, &(mOutGlop->fill.skiaShaderData));
657    }
658
659    // duplicates ProgramCache's definition of color uniform presence
660    const bool singleColor = !mDescription.hasTexture
661            && !mDescription.hasExternalTexture
662            && !mDescription.hasGradient
663            && !mDescription.hasBitmap;
664    mOutGlop->fill.colorEnabled = mDescription.modulate || singleColor;
665
666    verify(mDescription, *mOutGlop);
667
668    // Final step: populate program and map bounds into render target space
669    mOutGlop->fill.program = mCaches.programCache.get(mDescription);
670#if !HWUI_NEW_OPS
671    mOutGlop->transform.meshTransform().mapRect(mOutGlop->bounds);
672#endif
673}
674
675void GlopBuilder::dump(const Glop& glop) {
676    ALOGD("Glop Mesh");
677    const Glop::Mesh& mesh = glop.mesh;
678    ALOGD("    primitive mode: %d", mesh.primitiveMode);
679    ALOGD("    indices: buffer obj %x, indices %p", mesh.indices.bufferObject, mesh.indices.indices);
680
681    const Glop::Mesh::Vertices& vertices = glop.mesh.vertices;
682    ALOGD("    vertices: buffer obj %x, flags %x, pos %p, tex %p, clr %p, stride %d",
683            vertices.bufferObject, vertices.attribFlags,
684            vertices.position, vertices.texCoord, vertices.color, vertices.stride);
685    ALOGD("    element count: %d", mesh.elementCount);
686
687    ALOGD("Glop Fill");
688    const Glop::Fill& fill = glop.fill;
689    ALOGD("    program %p", fill.program);
690    if (fill.texture.texture) {
691        ALOGD("    texture %p, target %d, filter %d, clamp %d",
692                fill.texture.texture, fill.texture.target, fill.texture.filter, fill.texture.clamp);
693        if (fill.texture.textureTransform) {
694            fill.texture.textureTransform->dump("texture transform");
695        }
696    }
697    ALOGD_IF(fill.colorEnabled, "    color (argb) %.2f %.2f %.2f %.2f",
698            fill.color.a, fill.color.r, fill.color.g, fill.color.b);
699    ALOGD_IF(fill.filterMode != ProgramDescription::ColorFilterMode::None,
700            "    filterMode %d", (int)fill.filterMode);
701    ALOGD_IF(fill.skiaShaderData.skiaShaderType, "    shader type %d",
702            fill.skiaShaderData.skiaShaderType);
703
704    ALOGD("Glop transform");
705    glop.transform.modelView.dump("  model view");
706    glop.transform.canvas.dump("  canvas");
707    ALOGD_IF(glop.transform.transformFlags, "  transformFlags 0x%x", glop.transform.transformFlags);
708
709    ALOGD_IF(glop.roundRectClipState, "Glop RRCS %p", glop.roundRectClipState);
710
711    ALOGD("Glop blend %d %d", glop.blend.src, glop.blend.dst);
712#if !HWUI_NEW_OPS
713    ALOGD("Glop bounds " RECT_STRING, RECT_ARGS(glop.bounds));
714#endif
715}
716
717} /* namespace uirenderer */
718} /* namespace android */
719