1 // Copyright 2021 The SwiftShader Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef libXCB_hpp 16 #define libXCB_hpp 17 18 #include <xcb/shm.h> 19 #include <xcb/xcb.h> 20 21 struct LibXcbExports 22 { LibXcbExportsLibXcbExports23 LibXcbExports() {} 24 LibXcbExports(void *libxcb, void *libshm); 25 26 xcb_void_cookie_t (*xcb_create_gc)(xcb_connection_t *c, xcb_gcontext_t cid, xcb_drawable_t drawable, uint32_t value_mask, const void *value_list) = nullptr; 27 int (*xcb_flush)(xcb_connection_t *c) = nullptr; 28 xcb_void_cookie_t (*xcb_free_gc)(xcb_connection_t *c, xcb_gcontext_t gc) = nullptr; 29 uint32_t (*xcb_generate_id)(xcb_connection_t *c) = nullptr; 30 xcb_get_geometry_cookie_t (*xcb_get_geometry)(xcb_connection_t *c, xcb_drawable_t drawable) = nullptr; 31 xcb_get_geometry_reply_t *(*xcb_get_geometry_reply)(xcb_connection_t *c, xcb_get_geometry_cookie_t cookie, xcb_generic_error_t **e) = nullptr; 32 xcb_void_cookie_t (*xcb_put_image)(xcb_connection_t *c, uint8_t format, xcb_drawable_t drawable, xcb_gcontext_t gc, uint16_t width, uint16_t height, int16_t dst_x, int16_t dst_y, uint8_t left_pad, uint8_t depth, uint32_t data_len, const uint8_t *data) = nullptr; 33 xcb_void_cookie_t (*xcb_copy_area)(xcb_connection_t *conn, xcb_drawable_t src_drawable, xcb_drawable_t dst_drawable, xcb_gcontext_t gc, int16_t src_x, int16_t src_y, int16_t dst_x, int16_t dst_y, uint16_t width, uint16_t height); 34 xcb_void_cookie_t (*xcb_free_pixmap)(xcb_connection_t *conn, xcb_pixmap_t pixmap); 35 xcb_query_extension_reply_t *(*xcb_get_extension_data)(xcb_connection_t *c, xcb_extension_t *extension) = nullptr; 36 37 xcb_shm_query_version_cookie_t (*xcb_shm_query_version)(xcb_connection_t *c); 38 xcb_shm_query_version_reply_t *(*xcb_shm_query_version_reply)(xcb_connection_t *c, xcb_shm_query_version_cookie_t cookie, xcb_generic_error_t **e); 39 xcb_void_cookie_t (*xcb_shm_attach)(xcb_connection_t *c, xcb_shm_seg_t shmseg, uint32_t shmid, uint8_t read_only); 40 xcb_void_cookie_t (*xcb_shm_detach)(xcb_connection_t *c, xcb_shm_seg_t shmseg); 41 xcb_void_cookie_t (*xcb_shm_create_pixmap)(xcb_connection_t *c, xcb_pixmap_t pid, xcb_drawable_t drawable, uint16_t width, uint16_t height, uint8_t depth, xcb_shm_seg_t shmseg, uint32_t offset); 42 xcb_extension_t *xcb_shm_id; 43 }; 44 45 class LibXCB 46 { 47 public: isPresent()48 bool isPresent() 49 { 50 return loadExports() != nullptr; 51 } 52 53 LibXcbExports *operator->(); 54 55 private: 56 LibXcbExports *loadExports(); 57 }; 58 59 extern LibXCB libXCB; 60 61 #endif // libXCB_hpp 62