759ea80dca
Change-Id: I16c0593c5671490909dec13a85df601e1428a1a6
81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_UI_PATCH_H
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#define ANDROID_UI_PATCH_H
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#include <sys/types.h>
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#include "Vertex.h"
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namespace android {
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namespace uirenderer {
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/**
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* Description of a patch.
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*/
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struct PatchDescription {
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PatchDescription(): xCount(0), yCount(0) { }
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PatchDescription(const uint32_t xCount, const uint32_t yCount):
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xCount(xCount), yCount(yCount) { }
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PatchDescription(const PatchDescription& description):
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xCount(description.xCount), yCount(description.yCount) { }
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uint32_t xCount;
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uint32_t yCount;
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bool operator<(const PatchDescription& rhs) const {
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if (xCount == rhs.xCount) {
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return yCount < rhs.yCount;
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}
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return xCount < rhs.xCount;
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}
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bool operator==(const PatchDescription& rhs) const {
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return xCount == rhs.xCount && yCount == rhs.yCount;
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}
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}; // struct PatchDescription
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/**
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* An OpenGL patch. This contains an array of vertices and an array of
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* indices to render the vertices.
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*/
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struct Patch {
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Patch(const uint32_t xCount, const uint32_t yCount);
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~Patch();
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void updateVertices(const float bitmapWidth, const float bitmapHeight,
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float left, float top, float right, float bottom,
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const int32_t* xDivs, const int32_t* yDivs,
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const uint32_t width, const uint32_t height);
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TextureVertex* vertices;
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uint32_t verticesCount;
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private:
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static inline void generateRow(TextureVertex*& vertex, float y1, float y2,
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float v1, float v2, const int32_t xDivs[], uint32_t xCount,
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float stretchX, float width, float bitmapWidth);
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static inline void generateQuad(TextureVertex*& vertex,
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float x1, float y1, float x2, float y2,
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float u1, float v1, float u2, float v2);
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}; // struct Patch
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}; // namespace uirenderer
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}; // namespace android
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#endif // ANDROID_UI_PATCH_H
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