1/*
2 * Copyright 2014, 2015 Red Hat.
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 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23#ifndef VIRGL_H
24#define VIRGL_H
25
26#include "pipe/p_screen.h"
27#include "util/slab.h"
28#include "util/disk_cache.h"
29#include "virgl_winsys.h"
30#include "compiler/nir/nir.h"
31
32enum virgl_debug_flags {
33   VIRGL_DEBUG_VERBOSE              = 1 << 0,
34   VIRGL_DEBUG_TGSI                 = 1 << 1,
35   VIRGL_DEBUG_NO_EMULATE_BGRA      = 1 << 2,
36   VIRGL_DEBUG_NO_BGRA_DEST_SWIZZLE = 1 << 3,
37   VIRGL_DEBUG_SYNC                 = 1 << 4,
38   VIRGL_DEBUG_XFER                 = 1 << 5,
39   VIRGL_DEBUG_NO_COHERENT          = 1 << 6,
40   VIRGL_DEBUG_USE_TGSI             = 1 << 7,
41   VIRGL_DEBUG_L8_SRGB_ENABLE_READBACK = 1 << 8,
42};
43
44extern int virgl_debug;
45
46struct virgl_screen {
47   struct pipe_screen base;
48
49   int refcnt;
50
51   /* place for winsys to stash it's own stuff: */
52   void *winsys_priv;
53
54   struct virgl_winsys *vws;
55
56   struct virgl_drm_caps caps;
57
58   struct slab_parent_pool transfer_pool;
59
60   uint32_t sub_ctx_id;
61   bool tweak_gles_emulate_bgra;
62   bool tweak_gles_apply_bgra_dest_swizzle;
63   bool tweak_l8_srgb_readback;
64   bool no_coherent;
65   int32_t tweak_gles_tf3_value;
66
67   nir_shader_compiler_options compiler_options;
68
69   struct disk_cache *disk_cache;
70};
71
72
73static inline struct virgl_screen *
74virgl_screen(struct pipe_screen *pipe)
75{
76   return (struct virgl_screen *)pipe;
77}
78
79bool
80virgl_has_readback_format(struct pipe_screen *screen, enum virgl_formats fmt,
81                          bool allow_tweak);
82
83bool
84virgl_has_scanout_format(struct virgl_screen *vscreen,
85                         enum pipe_format format,
86                         bool may_emulate_bgra);
87
88/* GL_ARB_map_buffer_alignment requires 64 as the minimum alignment value.  In
89 * addition to complying with the extension, a high enough alignment value is
90 * expected by various external GL clients. For example, wined3d doesn't like
91 * maps that don't have a 16 byte alignment.
92 */
93#define VIRGL_MAP_BUFFER_ALIGNMENT 64
94
95#endif
96