1 /*
2 * Copyright (C) 2016 Christian Gmeiner <christian.gmeiner@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@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 *
renderonly_scanout_for_resource(struct pipe_resource * rsc,struct renderonly * ro,struct winsys_handle * out_handle)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
renderonly_get_handle(struct renderonly_scanout * scanout,struct winsys_handle * handle)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