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1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
2 
3 /*
4  * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice (including the next
14  * paragraph) shall be included in all copies or substantial portions of the
15  * Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23  * SOFTWARE.
24  *
25  * Authors:
26  *    Rob Clark <robclark@freedesktop.org>
27  */
28 
29 #include "pipe/p_screen.h"
30 #include "util/u_format.h"
31 
32 #include "fd2_screen.h"
33 #include "fd2_context.h"
34 #include "fd2_util.h"
35 
36 static boolean
fd2_screen_is_format_supported(struct pipe_screen * pscreen,enum pipe_format format,enum pipe_texture_target target,unsigned sample_count,unsigned usage)37 fd2_screen_is_format_supported(struct pipe_screen *pscreen,
38 		enum pipe_format format,
39 		enum pipe_texture_target target,
40 		unsigned sample_count,
41 		unsigned usage)
42 {
43 	unsigned retval = 0;
44 
45 	if ((target >= PIPE_MAX_TEXTURE_TYPES) ||
46 			(sample_count > 1) || /* TODO add MSAA */
47 			!util_format_is_supported(format, usage)) {
48 		DBG("not supported: format=%s, target=%d, sample_count=%d, usage=%x",
49 				util_format_name(format), target, sample_count, usage);
50 		return FALSE;
51 	}
52 
53 	/* TODO figure out how to render to other formats.. */
54 	if ((usage & PIPE_BIND_RENDER_TARGET) &&
55 			((format != PIPE_FORMAT_B8G8R8A8_UNORM) &&
56 			 (format != PIPE_FORMAT_B8G8R8X8_UNORM))) {
57 		DBG("not supported render target: format=%s, target=%d, sample_count=%d, usage=%x",
58 				util_format_name(format), target, sample_count, usage);
59 		return FALSE;
60 	}
61 
62 	if ((usage & (PIPE_BIND_SAMPLER_VIEW |
63 				PIPE_BIND_VERTEX_BUFFER)) &&
64 			(fd2_pipe2surface(format) != (enum a2xx_sq_surfaceformat)~0)) {
65 		retval |= usage & (PIPE_BIND_SAMPLER_VIEW |
66 				PIPE_BIND_VERTEX_BUFFER);
67 	}
68 
69 	if ((usage & (PIPE_BIND_RENDER_TARGET |
70 				PIPE_BIND_DISPLAY_TARGET |
71 				PIPE_BIND_SCANOUT |
72 				PIPE_BIND_SHARED)) &&
73 			(fd2_pipe2color(format) != (enum a2xx_colorformatx)~0)) {
74 		retval |= usage & (PIPE_BIND_RENDER_TARGET |
75 				PIPE_BIND_DISPLAY_TARGET |
76 				PIPE_BIND_SCANOUT |
77 				PIPE_BIND_SHARED);
78 	}
79 
80 	if ((usage & PIPE_BIND_DEPTH_STENCIL) &&
81 			(fd_pipe2depth(format) != (enum adreno_rb_depth_format)~0)) {
82 		retval |= PIPE_BIND_DEPTH_STENCIL;
83 	}
84 
85 	if ((usage & PIPE_BIND_INDEX_BUFFER) &&
86 			(fd_pipe2index(format) != (enum pc_di_index_size)~0)) {
87 		retval |= PIPE_BIND_INDEX_BUFFER;
88 	}
89 
90 	if (retval != usage) {
91 		DBG("not supported: format=%s, target=%d, sample_count=%d, "
92 				"usage=%x, retval=%x", util_format_name(format),
93 				target, sample_count, usage, retval);
94 	}
95 
96 	return retval == usage;
97 }
98 
99 void
fd2_screen_init(struct pipe_screen * pscreen)100 fd2_screen_init(struct pipe_screen *pscreen)
101 {
102 	fd_screen(pscreen)->max_rts = 1;
103 	pscreen->context_create = fd2_context_create;
104 	pscreen->is_format_supported = fd2_screen_is_format_supported;
105 }
106