f504a2fa14
The previous implementation was using glBlendFunc with the parameters GL_ZERO/GL_ZERO which doesn't work for text, paths and other alpha sources (anti-aliasing.) The correct implementation is GL_ZERO/ GL_ONE_MINUS_SRC_ALPHA. Change-Id: I4cca65e57b6a37bbf5a41d382cb0648ee8e11e79
90 lines
2.5 KiB
C++
90 lines
2.5 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_HWUI_PATCH_H
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#define ANDROID_HWUI_PATCH_H
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#include <sys/types.h>
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#include <GLES2/gl2.h>
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#include <utils/Vector.h>
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#include "Rect.h"
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#include "Vertex.h"
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#include "utils/Compare.h"
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namespace android {
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namespace uirenderer {
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///////////////////////////////////////////////////////////////////////////////
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// Defines
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///////////////////////////////////////////////////////////////////////////////
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#define EXPLODE_GAP 4
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///////////////////////////////////////////////////////////////////////////////
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// 9-patch structures
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///////////////////////////////////////////////////////////////////////////////
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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, const int8_t emptyQuads = 0);
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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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void updateColorKey(const uint32_t colorKey);
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void copy(const int32_t* xDivs, const int32_t* yDivs);
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bool matches(const int32_t* xDivs, const int32_t* yDivs, const uint32_t colorKey);
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GLuint meshBuffer;
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uint32_t verticesCount;
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bool hasEmptyQuads;
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Vector<Rect> quads;
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private:
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TextureVertex* mVertices;
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bool mUploaded;
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int32_t* mXDivs;
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int32_t* mYDivs;
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uint32_t mColorKey;
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uint32_t mXCount;
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uint32_t mYCount;
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int8_t mEmptyQuads;
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void copy(const int32_t* yDivs);
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void generateRow(TextureVertex*& vertex, float y1, float y2,
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float v1, float v2, float stretchX, float width, float bitmapWidth,
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uint32_t& quadCount);
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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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uint32_t& quadCount);
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}; // struct Patch
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}; // namespace uirenderer
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}; // namespace android
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#endif // ANDROID_HWUI_PATCH_H
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