1 /* 2 * Copyright (C) 2016 Christian Gmeiner <christian.gmeiner (at) gmail.com> 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 * SOFTWARE. 22 * 23 * Authors: 24 * Christian Gmeiner <christian.gmeiner (at) gmail.com> 25 */ 26 27 #ifndef RENDERONLY_H 28 #define RENDERONLY_H 29 30 #include <stdint.h> 31 #include "state_tracker/drm_driver.h" 32 #include "pipe/p_state.h" 33 34 struct renderonly_scanout { 35 uint32_t handle; 36 uint32_t stride; 37 }; 38 39 struct renderonly { 40 /** 41 * Create a renderonly_scanout object for scanout resource. 42 * 43 * This function creates a renderonly_scanout object based on the provided 44 * resource. The library is designed that the driver specific pipe_resource 45 * struct holds a pointer to a renderonly_scanout struct. 46 * 47 * struct driver_resource { 48 * struct pipe_resource base; 49 * struct renderonly_scanout *scanout; 50 * ... 51 * }; 52 * 53 * The renderonly_scanout object exits for two reasons: 54 * - Do any special treatment for a scanout resource like importing the GPU 55 * resource into the scanout hw. 56 * - Make it easier for a gallium driver to detect if anything special needs 57 * to be done in flush_resource(..) like a resolve to linear. 58 */ 59 struct renderonly_scanout *(*create_for_resource)(struct pipe_resource *rsc, 60 struct renderonly *ro, 61 struct winsys_handle *out_handle); 62 int kms_fd; 63 int gpu_fd; 64 }; 65 66 struct renderonly * 67 renderonly_dup(const struct renderonly *ro); 68 69 static inline struct renderonly_scanout * 70 renderonly_scanout_for_resource(struct pipe_resource *rsc, 71 struct renderonly *ro, 72 struct winsys_handle *out_handle) 73 { 74 return ro->create_for_resource(rsc, ro, out_handle); 75 } 76 77 void 78 renderonly_scanout_destroy(struct renderonly_scanout *scanout, 79 struct renderonly *ro); 80 81 static inline boolean 82 renderonly_get_handle(struct renderonly_scanout *scanout, 83 struct winsys_handle *handle) 84 { 85 if (!scanout) 86 return FALSE; 87 88 assert(handle->type == DRM_API_HANDLE_TYPE_KMS); 89 handle->handle = scanout->handle; 90 handle->stride = scanout->stride; 91 92 return TRUE; 93 } 94 95 /** 96 * Create a dumb buffer object for a resource at scanout hw. 97 */ 98 struct renderonly_scanout * 99 renderonly_create_kms_dumb_buffer_for_resource(struct pipe_resource *rsc, 100 struct renderonly *ro, 101 struct winsys_handle *out_handle); 102 103 /** 104 * Import GPU resource into scanout hw. 105 */ 106 struct renderonly_scanout * 107 renderonly_create_gpu_import_for_resource(struct pipe_resource *rsc, 108 struct renderonly *ro, 109 struct winsys_handle *out_handle); 110 111 #endif /* RENDERONLY_H_ */ 112
