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, text is interpreted as glyphs instead of UTF-16 29 #define RENDER_TEXT_AS_GLYPHS 1 30 31 // Indicates whether to remove the biggest layers first, or the smaller ones 32 #define LAYER_REMOVE_BIGGEST_FIRST 0 33 34 // Textures used by layers must have dimensions multiples of this number 35 #define LAYER_SIZE 64 36 37 // Defines the size in bits of the stencil buffer 38 // Note: Only 1 bit is required for clipping but more bits are required 39 // to properly implement the winding fill rule when rasterizing paths 40 #define STENCIL_BUFFER_SIZE 8 41 42 /** 43 * Debug level for app developers. The value is a numeric value defined 44 * by the DebugLevel enum below. 45 */ 46 #define PROPERTY_DEBUG "debug.hwui.level" 47 48 /** 49 * Debug levels. Debug levels are used as flags. 50 */ 51 enum DebugLevel { 52 kDebugDisabled = 0, 53 kDebugMemory = 1, 54 kDebugCaches = 2, 55 kDebugMoreCaches = kDebugMemory | kDebugCaches 56 }; 57 58 /** 59 * Used to enable/disable layers update debugging. The accepted values are 60 * "true" and "false". The default value is "false". 61 */ 62 #define PROPERTY_DEBUG_LAYERS_UPDATES "debug.hwui.show_layers_updates" 63 64 /** 65 * Used to enable/disable overdraw debugging. The accepted values are 66 * "true" and "false". The default value is "false". 67 */ 68 #define PROPERTY_DEBUG_OVERDRAW "debug.hwui.show_overdraw" 69 70 /** 71 * Used to enable/disable scissor optimization. The accepted values are 72 * "true" and "false". The default value is "false". 73 * 74 * When scissor optimization is enabled, OpenGLRenderer will attempt to 75 * minimize the use of scissor by selectively enabling and disabling the 76 * GL scissor test. 77 * When the optimization is disabled, OpenGLRenderer will keep the GL 78 * scissor test enabled and change the scissor rect as needed. 79 * Some GPUs (for instance the SGX 540) perform better when changing 80 * the scissor rect often than when enabling/disabling the scissor test 81 * often. 82 */ 83 #define PROPERTY_DISABLE_SCISSOR_OPTIMIZATION "ro.hwui.disable_scissor_opt" 84 85 // These properties are defined in mega-bytes 86 #define PROPERTY_TEXTURE_CACHE_SIZE "ro.hwui.texture_cache_size" 87 #define PROPERTY_LAYER_CACHE_SIZE "ro.hwui.layer_cache_size" 88 #define PROPERTY_GRADIENT_CACHE_SIZE "ro.hwui.gradient_cache_size" 89 #define PROPERTY_PATH_CACHE_SIZE "ro.hwui.path_cache_size" 90 #define PROPERTY_SHAPE_CACHE_SIZE "ro.hwui.shape_cache_size" 91 #define PROPERTY_DROP_SHADOW_CACHE_SIZE "ro.hwui.drop_shadow_cache_size" 92 #define PROPERTY_FBO_CACHE_SIZE "ro.hwui.fbo_cache_size" 93 94 // These properties are defined in percentage (range 0..1) 95 #define PROPERTY_TEXTURE_CACHE_FLUSH_RATE "ro.hwui.texture_cache_flush_rate" 96 97 // These properties are defined in pixels 98 #define PROPERTY_TEXT_SMALL_CACHE_WIDTH "ro.hwui.text_small_cache_width" 99 #define PROPERTY_TEXT_SMALL_CACHE_HEIGHT "ro.hwui.text_small_cache_height" 100 #define PROPERTY_TEXT_LARGE_CACHE_WIDTH "ro.hwui.text_large_cache_width" 101 #define PROPERTY_TEXT_LARGE_CACHE_HEIGHT "ro.hwui.text_large_cache_height" 102 103 // Indicates whether gamma correction should be applied in the shaders 104 // or in lookup tables. Accepted values: 105 // 106 // - "lookup3", correction based on lookup tables. Gamma correction 107 // is different for black and white text (see thresholds below) 108 // 109 // - "lookup", correction based on a single lookup table 110 // 111 // - "shader3", correction applied by a GLSL shader. Gamma correction 112 // is different for black and white text (see thresholds below) 113 // 114 // - "shader", correction applied by a GLSL shader 115 // 116 // See PROPERTY_TEXT_GAMMA, PROPERTY_TEXT_BLACK_GAMMA_THRESHOLD and 117 // PROPERTY_TEXT_WHITE_GAMMA_THRESHOLD for more control. 118 #define PROPERTY_TEXT_GAMMA_METHOD "hwui.text_gamma_correction" 119 #define DEFAULT_TEXT_GAMMA_METHOD "lookup" 120 121 // Gamma (>= 1.0, <= 10.0) 122 #define PROPERTY_TEXT_GAMMA "hwui.text_gamma" 123 // Luminance threshold below which black gamma correction is applied. Range: [0..255] 124 #define PROPERTY_TEXT_BLACK_GAMMA_THRESHOLD "hwui.text_gamma.black_threshold" 125 // Lumincance threshold above which white gamma correction is applied. Range: [0..255] 126 #define PROPERTY_TEXT_WHITE_GAMMA_THRESHOLD "hwui.text_gamma.white_threshold" 127 128 // Converts a number of mega-bytes into bytes 129 #define MB(s) s * 1024 * 1024 130 131 #define DEFAULT_TEXTURE_CACHE_SIZE 24.0f 132 #define DEFAULT_LAYER_CACHE_SIZE 16.0f 133 #define DEFAULT_PATH_CACHE_SIZE 4.0f 134 #define DEFAULT_SHAPE_CACHE_SIZE 1.0f 135 #define DEFAULT_PATCH_CACHE_SIZE 512 136 #define DEFAULT_GRADIENT_CACHE_SIZE 0.5f 137 #define DEFAULT_DROP_SHADOW_CACHE_SIZE 2.0f 138 #define DEFAULT_FBO_CACHE_SIZE 16 139 140 #define DEFAULT_TEXTURE_CACHE_FLUSH_RATE 0.6f 141 142 #define DEFAULT_TEXT_GAMMA 1.4f 143 #define DEFAULT_TEXT_BLACK_GAMMA_THRESHOLD 64 144 #define DEFAULT_TEXT_WHITE_GAMMA_THRESHOLD 192 145 146 static DebugLevel readDebugLevel() { 147 char property[PROPERTY_VALUE_MAX]; 148 if (property_get(PROPERTY_DEBUG, property, NULL) > 0) { 149 return (DebugLevel) atoi(property); 150 } 151 return kDebugDisabled; 152 } 153 154 #endif // ANDROID_HWUI_PROPERTIES_H 155
