GlopBuilder.h revision 26bf34200e40a0fa8c66366559aa016380cd8c6f 
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#ifndef RENDERSTATE_GLOPBUILDER_H
17#define RENDERSTATE_GLOPBUILDER_H
18
19#include "OpenGLRenderer.h"
20#include "Program.h"
21#include "utils/Macros.h"
22
23class SkPaint;
24class SkShader;
25
26namespace android {
27namespace uirenderer {
28
29class Caches;
30class Matrix4;
31class RenderState;
32class Texture;
33class VertexBuffer;
34struct Glop;
35
36class GlopBuilder {
37    PREVENT_COPY_AND_ASSIGN(GlopBuilder);
38public:
39    GlopBuilder(RenderState& renderState, Caches& caches, Glop* outGlop);
40
41    GlopBuilder& setMeshUnitQuad();
42    GlopBuilder& setMeshTexturedUnitQuad(const UvMapper* uvMapper);
43    GlopBuilder& setMeshTexturedUvQuad(const UvMapper* uvMapper, const Rect uvs);
44    GlopBuilder& setMeshVertexBuffer(const VertexBuffer& vertexBuffer, bool shadowInterp);
45    GlopBuilder& setMeshIndexedQuads(Vertex* vertexData, int quadCount);
46    GlopBuilder& setMeshColoredTexturedMesh(ColorTextureVertex* vertexData, int elementCount);
47    GlopBuilder& setMeshTexturedIndexedQuads(TextureVertex* vertexData, int elementCount); // TODO: take quadCount
48
49    GlopBuilder& setFillPaint(const SkPaint& paint, float alphaScale);
50    GlopBuilder& setFillTexturePaint(Texture& texture, bool isAlphaMaskTexture,
51            const SkPaint* paint, float alphaScale);
52    GlopBuilder& setFillPathTexturePaint(PathTexture& texture,
53            const SkPaint& paint, float alphaScale);
54    GlopBuilder& setFillShadowTexturePaint(ShadowTexture& texture, int shadowColor,
55            const SkPaint& paint, float alphaScale);
56    GlopBuilder& setFillBlack();
57    GlopBuilder& setFillClear();
58    GlopBuilder& setFillLayer(Texture& texture, const SkColorFilter* colorFilter,
59            float alpha, SkXfermode::Mode mode);
60    GlopBuilder& setFillTextureLayer(Layer& layer, float alpha);
61
62    GlopBuilder& setTransform(const Matrix4& ortho, const Matrix4& transform, bool fudgingOffset);
63
64    GlopBuilder& setModelViewMapUnitToRect(const Rect destination);
65    GlopBuilder& setModelViewMapUnitToRectSnap(const Rect destination);
66    GlopBuilder& setModelViewMapUnitToRectOptionalSnap(bool snap, const Rect destination) {
67        if (snap) {
68            return setModelViewMapUnitToRectSnap(destination);
69        } else {
70            return setModelViewMapUnitToRect(destination);
71        }
72    }
73    GlopBuilder& setModelViewOffsetRect(float offsetX, float offsetY, const Rect source);
74    GlopBuilder& setModelViewOffsetRectSnap(float offsetX, float offsetY, const Rect source);
75
76    GlopBuilder& setRoundRectClipState(const RoundRectClipState* roundRectClipState);
77
78    void build();
79private:
80    void setFill(int color, float alphaScale, SkXfermode::Mode mode,
81            const SkShader* shader, const SkColorFilter* colorFilter);
82
83    enum StageFlags {
84        kInitialStage = 0,
85        kMeshStage = 1 << 0,
86        kTransformStage = 1 << 1,
87        kModelViewStage = 1 << 2,
88        kFillStage = 1 << 3,
89        kRoundRectClipStage = 1 << 4,
90        kAllStages = kMeshStage | kFillStage | kTransformStage | kModelViewStage | kRoundRectClipStage,
91    } mStageFlags;
92
93    ProgramDescription mDescription;
94    RenderState& mRenderState;
95    Caches& mCaches;
96    const SkShader* mShader;
97    Glop* mOutGlop;
98};
99
100} /* namespace uirenderer */
101} /* namespace android */
102
103#endif // RENDERSTATE_GLOPBUILDER_H
104