5b0200bd47
Draw anti-aliased lines with OpenGL by constructing a quad with a border that fades out (to mimic fragment coverage). Change-Id: Ib81a3e62d663acdf1b46b401ac4aa7ee9855cc7e
75 lines
2.0 KiB
C++
75 lines
2.0 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_VERTEX_H
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#define ANDROID_HWUI_VERTEX_H
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namespace android {
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namespace uirenderer {
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/**
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* Simple structure to describe a vertex with a position and a texture.
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*/
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struct Vertex {
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float position[2];
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static inline void set(Vertex* vertex, float x, float y) {
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vertex[0].position[0] = x;
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vertex[0].position[1] = y;
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}
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}; // struct Vertex
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/**
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* Simple structure to describe a vertex with a position and a texture.
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*/
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struct TextureVertex {
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float position[2];
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float texture[2];
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static inline void set(TextureVertex* vertex, float x, float y, float u, float v) {
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vertex[0].position[0] = x;
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vertex[0].position[1] = y;
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vertex[0].texture[0] = u;
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vertex[0].texture[1] = v;
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}
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static inline void setUV(TextureVertex* vertex, float u, float v) {
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vertex[0].texture[0] = u;
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vertex[0].texture[1] = v;
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}
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}; // struct TextureVertex
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/**
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* Simple structure to describe a vertex with a position and an alpha value.
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*/
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struct AlphaVertex : Vertex {
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float alpha;
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static inline void set(AlphaVertex* vertex, float x, float y, float alpha) {
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Vertex::set(vertex, x, y);
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vertex[0].alpha = alpha;
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}
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static inline void setColor(AlphaVertex* vertex, float alpha) {
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vertex[0].alpha = alpha;
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}
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}; // struct AlphaVertex
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}; // namespace uirenderer
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}; // namespace android
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#endif // ANDROID_HWUI_VERTEX_H
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