iris_screen.h revision 9f464c52 
1/*
2 * Copyright © 2017 Intel Corporation
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 IRIS_SCREEN_H
24#define IRIS_SCREEN_H
25
26#include "pipe/p_screen.h"
27#include "state_tracker/drm_driver.h"
28#include "util/slab.h"
29#include "util/u_screen.h"
30#include "intel/dev/gen_device_info.h"
31#include "intel/isl/isl.h"
32#include "iris_bufmgr.h"
33
34struct iris_bo;
35
36#define READ_ONCE(x) (*(volatile __typeof__(x) *)&(x))
37#define WRITE_ONCE(x, v) *(volatile __typeof__(x) *)&(x) = (v)
38
39#define IRIS_MAX_TEXTURE_SAMPLERS 32
40#define IRIS_MAX_SOL_BUFFERS 4
41#define IRIS_MAP_BUFFER_ALIGNMENT 64
42
43struct iris_screen {
44   struct pipe_screen base;
45
46   /** Global slab allocator for iris_transfer_map objects */
47   struct slab_parent_pool transfer_pool;
48
49   /** drm device file descriptor */
50   int fd;
51
52   /** PCI ID for our GPU device */
53   int pci_id;
54
55   bool no_hw;
56
57   /** Global program_string_id counter (see get_program_string_id()) */
58   unsigned program_id;
59
60   /** Precompile shaders at link time?  (Can be disabled for debugging.) */
61   bool precompile;
62
63   /** driconf options and application workarounds */
64   struct {
65      /** Dual color blend by location instead of index (for broken apps) */
66      bool dual_color_blend_by_location;
67   } driconf;
68
69   unsigned subslice_total;
70
71   struct gen_device_info devinfo;
72   struct isl_device isl_dev;
73   struct iris_bufmgr *bufmgr;
74   struct brw_compiler *compiler;
75
76   /**
77    * A buffer containing nothing useful, for hardware workarounds that
78    * require scratch writes or reads from some unimportant memory.
79    */
80   struct iris_bo *workaround_bo;
81};
82
83struct pipe_screen *
84iris_screen_create(int fd, const struct pipe_screen_config *config);
85
86boolean
87iris_is_format_supported(struct pipe_screen *pscreen,
88                         enum pipe_format format,
89                         enum pipe_texture_target target,
90                         unsigned sample_count,
91                         unsigned storage_sample_count,
92                         unsigned usage);
93
94#endif
95