1 /* 2 * Mesa 3-D graphics library 3 * Version: 7.12 4 * 5 * Copyright (C) 2011 LunarG Inc. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included 15 * in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 23 * DEALINGS IN THE SOFTWARE. 24 * 25 * Authors: 26 * Chia-I Wu <olv (at) lunarg.com> 27 */ 28 29 /** 30 * For NULL window system, 31 * 32 * - the only valid native display is EGL_DEFAULT_DISPLAY 33 * - there is no window or pixmap 34 */ 35 36 #include "util/u_memory.h" 37 #include "null/null_sw_winsys.h" 38 #include "common/native.h" 39 40 struct null_display { 41 struct native_display base; 42 43 const struct native_event_handler *event_handler; 44 45 struct native_config *configs; 46 int num_configs; 47 }; 48 49 static INLINE struct null_display * 50 null_display(const struct native_display *ndpy) 51 { 52 return (struct null_display *) ndpy; 53 } 54 55 static const struct native_config ** 56 null_display_get_configs(struct native_display *ndpy, int *num_configs) 57 { 58 struct null_display *null = null_display(ndpy); 59 const struct native_config **configs; 60 int i; 61 62 configs = MALLOC(sizeof(*configs) * null->num_configs); 63 if (configs) { 64 for (i = 0; i < null->num_configs; i++) 65 configs[i] = &null->configs[i]; 66 if (num_configs) 67 *num_configs = null->num_configs; 68 } 69 70 return configs; 71 } 72 73 static int 74 null_display_get_param(struct native_display *ndpy, 75 enum native_param_type param) 76 { 77 return 0; 78 } 79 80 static void 81 null_display_destroy(struct native_display *ndpy) 82 { 83 struct null_display *null = null_display(ndpy); 84 85 FREE(null->configs); 86 ndpy_uninit(&null->base); 87 FREE(null); 88 } 89 90 static boolean 91 null_display_init_config(struct native_display *ndpy) 92 { 93 const enum pipe_format color_formats[] = { 94 PIPE_FORMAT_B8G8R8A8_UNORM, 95 PIPE_FORMAT_B8G8R8X8_UNORM, 96 PIPE_FORMAT_B5G6R5_UNORM, 97 PIPE_FORMAT_NONE 98 }; 99 struct null_display *null = null_display(ndpy); 100 int i; 101 102 null->configs = CALLOC(Elements(color_formats) - 1, sizeof(*null->configs)); 103 if (!null->configs) 104 return FALSE; 105 106 /* add configs */ 107 for (i = 0; color_formats[i] != PIPE_FORMAT_NONE; i++) { 108 if (null->base.screen->is_format_supported(null->base.screen, 109 color_formats[i], PIPE_TEXTURE_2D, 0, 110 PIPE_BIND_RENDER_TARGET)) { 111 struct native_config *nconf = &null->configs[null->num_configs]; 112 113 nconf->color_format = color_formats[i]; 114 nconf->buffer_mask = 1 << NATIVE_ATTACHMENT_BACK_LEFT; 115 null->num_configs++; 116 } 117 } 118 119 return TRUE; 120 } 121 122 static boolean 123 null_display_init_screen(struct native_display *ndpy) 124 { 125 struct null_display *null = null_display(ndpy); 126 struct sw_winsys *ws; 127 128 ws = null_sw_create(); 129 if (!ws) 130 return FALSE; 131 132 null->base.screen = null->event_handler->new_sw_screen(&null->base, ws); 133 if (!null->base.screen) { 134 if (ws->destroy) 135 ws->destroy(ws); 136 return FALSE; 137 } 138 139 if (!null_display_init_config(&null->base)) { 140 ndpy_uninit(&null->base); 141 return FALSE; 142 } 143 144 return TRUE; 145 } 146 147 static struct native_display * 148 null_display_create(const struct native_event_handler *event_handler) 149 { 150 struct null_display *null; 151 152 null = CALLOC_STRUCT(null_display); 153 if (!null) 154 return NULL; 155 156 null->event_handler = event_handler; 157 158 null->base.init_screen = null_display_init_screen; 159 null->base.destroy = null_display_destroy; 160 null->base.get_param = null_display_get_param; 161 null->base.get_configs = null_display_get_configs; 162 163 return &null->base; 164 } 165 166 static const struct native_event_handler *null_event_handler; 167 168 static struct native_display * 169 native_create_display(void *dpy, boolean use_sw) 170 { 171 struct native_display *ndpy = NULL; 172 173 /* the only valid display is NULL */ 174 if (!dpy) 175 ndpy = null_display_create(null_event_handler); 176 177 return ndpy; 178 } 179 180 static const struct native_platform null_platform = { 181 "NULL", /* name */ 182 native_create_display 183 }; 184 185 const struct native_platform * 186 native_get_null_platform(const struct native_event_handler *event_handler) 187 { 188 null_event_handler = event_handler; 189 return &null_platform; 190 } 191
