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      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 
     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 
     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 
     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 
     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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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 
    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