1/*
2 * Copyright (C) 2016 Rob Clark <robclark@freedesktop.org>
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 *    Rob Clark <robclark@freedesktop.org>
25 */
26
27#include "pipe/p_screen.h"
28#include "util/format/u_format.h"
29
30#include "fd5_blitter.h"
31#include "fd5_context.h"
32#include "fd5_emit.h"
33#include "fd5_format.h"
34#include "fd5_resource.h"
35#include "fd5_screen.h"
36
37#include "ir3/ir3_compiler.h"
38
39static bool
40valid_sample_count(unsigned sample_count)
41{
42   switch (sample_count) {
43   case 0:
44   case 1:
45   case 2:
46   case 4:
47      return true;
48   default:
49      return false;
50   }
51}
52
53static bool
54fd5_screen_is_format_supported(struct pipe_screen *pscreen,
55                               enum pipe_format format,
56                               enum pipe_texture_target target,
57                               unsigned sample_count,
58                               unsigned storage_sample_count, unsigned usage)
59{
60   unsigned retval = 0;
61
62   if ((target >= PIPE_MAX_TEXTURE_TYPES) ||
63       !valid_sample_count(sample_count)) {
64      DBG("not supported: format=%s, target=%d, sample_count=%d, usage=%x",
65          util_format_name(format), target, sample_count, usage);
66      return false;
67   }
68
69   if (MAX2(1, sample_count) != MAX2(1, storage_sample_count))
70      return false;
71
72   if ((usage & PIPE_BIND_VERTEX_BUFFER) &&
73       (fd5_pipe2vtx(format) != VFMT5_NONE)) {
74      retval |= PIPE_BIND_VERTEX_BUFFER;
75   }
76
77   if ((usage & (PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_SHADER_IMAGE)) &&
78       (fd5_pipe2tex(format) != TFMT5_NONE) &&
79       (target == PIPE_BUFFER || util_format_get_blocksize(format) != 12)) {
80      retval |= usage & (PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_SHADER_IMAGE);
81   }
82
83   if ((usage &
84        (PIPE_BIND_RENDER_TARGET | PIPE_BIND_DISPLAY_TARGET |
85         PIPE_BIND_SCANOUT | PIPE_BIND_SHARED | PIPE_BIND_COMPUTE_RESOURCE)) &&
86       (fd5_pipe2color(format) != RB5_NONE) &&
87       (fd5_pipe2tex(format) != TFMT5_NONE)) {
88      retval |= usage & (PIPE_BIND_RENDER_TARGET | PIPE_BIND_DISPLAY_TARGET |
89                         PIPE_BIND_SCANOUT | PIPE_BIND_SHARED |
90                         PIPE_BIND_COMPUTE_RESOURCE);
91   }
92
93   if (usage & PIPE_BIND_SHADER_IMAGE) {
94      if (sample_count > 1)
95         return false;
96   }
97
98   /* For ARB_framebuffer_no_attachments: */
99   if ((usage & PIPE_BIND_RENDER_TARGET) && (format == PIPE_FORMAT_NONE)) {
100      retval |= usage & PIPE_BIND_RENDER_TARGET;
101   }
102
103   if ((usage & PIPE_BIND_DEPTH_STENCIL) &&
104       (fd5_pipe2depth(format) != (enum a5xx_depth_format) ~0) &&
105       (fd5_pipe2tex(format) != TFMT5_NONE)) {
106      retval |= PIPE_BIND_DEPTH_STENCIL;
107   }
108
109   if ((usage & PIPE_BIND_INDEX_BUFFER) &&
110       (fd_pipe2index(format) != (enum pc_di_index_size) ~0)) {
111      retval |= PIPE_BIND_INDEX_BUFFER;
112   }
113
114   if (retval != usage) {
115      DBG("not supported: format=%s, target=%d, sample_count=%d, "
116          "usage=%x, retval=%x",
117          util_format_name(format), target, sample_count, usage, retval);
118   }
119
120   return retval == usage;
121}
122
123/* clang-format off */
124static const enum pc_di_primtype primtypes[] = {
125   [PIPE_PRIM_POINTS]         = DI_PT_POINTLIST,
126   [PIPE_PRIM_LINES]          = DI_PT_LINELIST,
127   [PIPE_PRIM_LINE_STRIP]     = DI_PT_LINESTRIP,
128   [PIPE_PRIM_LINE_LOOP]      = DI_PT_LINELOOP,
129   [PIPE_PRIM_TRIANGLES]      = DI_PT_TRILIST,
130   [PIPE_PRIM_TRIANGLE_STRIP] = DI_PT_TRISTRIP,
131   [PIPE_PRIM_TRIANGLE_FAN]   = DI_PT_TRIFAN,
132   [PIPE_PRIM_MAX]            = DI_PT_RECTLIST,  /* internal clear blits */
133};
134/* clang-format on */
135
136void
137fd5_screen_init(struct pipe_screen *pscreen)
138{
139   struct fd_screen *screen = fd_screen(pscreen);
140   screen->max_rts = A5XX_MAX_RENDER_TARGETS;
141   pscreen->context_create = fd5_context_create;
142   pscreen->is_format_supported = fd5_screen_is_format_supported;
143
144   screen->setup_slices = fd5_setup_slices;
145   if (FD_DBG(TTILE))
146      screen->tile_mode = fd5_tile_mode;
147
148   fd5_emit_init_screen(pscreen);
149   ir3_screen_init(pscreen);
150
151   screen->primtypes = primtypes;
152}
153