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      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 // Indicates whether to remove the biggest layers first, or the smaller ones
     35 #define LAYER_REMOVE_BIGGEST_FIRST 0
     36 
     37 // Textures used by layers must have dimensions multiples of this number
     38 #define LAYER_SIZE 64
     39 
     40 /**
     41  * Debug level for app developers.
     42  */
     43 #define PROPERTY_DEBUG "hwui.debug_level"
     44 
     45 /**
     46  * Debug levels. Debug levels are used as flags.
     47  */
     48 enum DebugLevel {
     49     kDebugDisabled = 0,
     50     kDebugMemory = 1,
     51     kDebugCaches = 2,
     52     kDebugMoreCaches = kDebugMemory | kDebugCaches
     53 };
     54 
     55 // These properties are defined in mega-bytes
     56 #define PROPERTY_TEXTURE_CACHE_SIZE "ro.hwui.texture_cache_size"
     57 #define PROPERTY_LAYER_CACHE_SIZE "ro.hwui.layer_cache_size"
     58 #define PROPERTY_GRADIENT_CACHE_SIZE "ro.hwui.gradient_cache_size"
     59 #define PROPERTY_PATH_CACHE_SIZE "ro.hwui.path_cache_size"
     60 #define PROPERTY_SHAPE_CACHE_SIZE "ro.hwui.shape_cache_size"
     61 #define PROPERTY_DROP_SHADOW_CACHE_SIZE "ro.hwui.drop_shadow_cache_size"
     62 #define PROPERTY_FBO_CACHE_SIZE "ro.hwui.fbo_cache_size"
     63 
     64 // These properties are defined in pixels
     65 #define PROPERTY_TEXT_CACHE_WIDTH "ro.hwui.text_cache_width"
     66 #define PROPERTY_TEXT_CACHE_HEIGHT "ro.hwui.text_cache_height"
     67 
     68 // Gamma (>= 1.0, <= 10.0)
     69 #define PROPERTY_TEXT_GAMMA "ro.text_gamma"
     70 #define PROPERTY_TEXT_BLACK_GAMMA_THRESHOLD "ro.text_gamma.black_threshold"
     71 #define PROPERTY_TEXT_WHITE_GAMMA_THRESHOLD "ro.text_gamma.white_threshold"
     72 
     73 // Converts a number of mega-bytes into bytes
     74 #define MB(s) s * 1024 * 1024
     75 
     76 #define DEFAULT_TEXTURE_CACHE_SIZE 24.0f
     77 #define DEFAULT_LAYER_CACHE_SIZE 16.0f
     78 #define DEFAULT_PATH_CACHE_SIZE 4.0f
     79 #define DEFAULT_SHAPE_CACHE_SIZE 1.0f
     80 #define DEFAULT_PATCH_CACHE_SIZE 512
     81 #define DEFAULT_GRADIENT_CACHE_SIZE 0.5f
     82 #define DEFAULT_DROP_SHADOW_CACHE_SIZE 2.0f
     83 #define DEFAULT_FBO_CACHE_SIZE 16
     84 
     85 #define DEFAULT_TEXT_GAMMA 1.4f
     86 #define DEFAULT_TEXT_BLACK_GAMMA_THRESHOLD 64
     87 #define DEFAULT_TEXT_WHITE_GAMMA_THRESHOLD 192
     88 
     89 static DebugLevel readDebugLevel() {
     90     char property[PROPERTY_VALUE_MAX];
     91     if (property_get(PROPERTY_DEBUG, property, NULL) > 0) {
     92         return (DebugLevel) atoi(property);
     93     }
     94     return kDebugDisabled;
     95 }
     96 
     97 #endif // ANDROID_HWUI_PROPERTIES_H
     98