Properties.h revision 65b345fa22b878e141b8fd8ece9c208df00fa40f 
1/*
2 * Copyright (C) 2010 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
17#ifndef ANDROID_HWUI_PROPERTIES_H
18#define ANDROID_HWUI_PROPERTIES_H
19
20#include <cutils/properties.h>
21#include <stdlib.h>
22
23/**
24 * This file contains the list of system properties used to configure
25 * the OpenGLRenderer.
26 */
27
28// If turned on, layers drawn inside FBOs are optimized with regions
29#define RENDER_LAYERS_AS_REGIONS 1
30
31// If turned on, text is interpreted as glyphs instead of UTF-16
32#define RENDER_TEXT_AS_GLYPHS 1
33
34/**
35 * Debug level for app developers.
36 */
37#define PROPERTY_DEBUG "hwui.debug_level"
38
39/**
40 * Debug levels. Debug levels are used as flags.
41 */
42enum DebugLevel {
43    kDebugDisabled = 0,
44    kDebugMemory = 1,
45    kDebugCaches = 2,
46    kDebugMoreCaches = kDebugMemory | kDebugCaches
47};
48
49// These properties are defined in mega-bytes
50#define PROPERTY_TEXTURE_CACHE_SIZE "ro.hwui.texture_cache_size"
51#define PROPERTY_LAYER_CACHE_SIZE "ro.hwui.layer_cache_size"
52#define PROPERTY_GRADIENT_CACHE_SIZE "ro.hwui.gradient_cache_size"
53#define PROPERTY_PATH_CACHE_SIZE "ro.hwui.path_cache_size"
54#define PROPERTY_SHAPE_CACHE_SIZE "ro.hwui.shape_cache_size"
55#define PROPERTY_DROP_SHADOW_CACHE_SIZE "ro.hwui.drop_shadow_cache_size"
56#define PROPERTY_FBO_CACHE_SIZE "ro.hwui.fbo_cache_size"
57
58// These properties are defined in pixels
59#define PROPERTY_TEXT_CACHE_WIDTH "ro.hwui.text_cache_width"
60#define PROPERTY_TEXT_CACHE_HEIGHT "ro.hwui.text_cache_height"
61
62// Gamma (>= 1.0, <= 10.0)
63#define PROPERTY_TEXT_GAMMA "ro.text_gamma"
64#define PROPERTY_TEXT_BLACK_GAMMA_THRESHOLD "ro.text_gamma.black_threshold"
65#define PROPERTY_TEXT_WHITE_GAMMA_THRESHOLD "ro.text_gamma.white_threshold"
66
67// Converts a number of mega-bytes into bytes
68#define MB(s) s * 1024 * 1024
69
70#define DEFAULT_TEXTURE_CACHE_SIZE 24.0f
71#define DEFAULT_LAYER_CACHE_SIZE 16.0f
72#define DEFAULT_PATH_CACHE_SIZE 4.0f
73#define DEFAULT_SHAPE_CACHE_SIZE 1.0f
74#define DEFAULT_PATCH_CACHE_SIZE 512
75#define DEFAULT_GRADIENT_CACHE_SIZE 0.5f
76#define DEFAULT_DROP_SHADOW_CACHE_SIZE 2.0f
77#define DEFAULT_FBO_CACHE_SIZE 16
78
79#define DEFAULT_TEXT_GAMMA 1.4f
80#define DEFAULT_TEXT_BLACK_GAMMA_THRESHOLD 64
81#define DEFAULT_TEXT_WHITE_GAMMA_THRESHOLD 192
82
83static DebugLevel readDebugLevel() {
84    char property[PROPERTY_VALUE_MAX];
85    if (property_get(PROPERTY_DEBUG, property, NULL) > 0) {
86        return (DebugLevel) atoi(property);
87    }
88    return kDebugDisabled;
89}
90
91#endif // ANDROID_HWUI_PROPERTIES_H
92