1/*
2 * Copyright (C) 2014 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 "tgsi/tgsi_text.h"
28#include "tgsi/tgsi_ureg.h"
29
30#include "freedreno_program.h"
31#include "freedreno_context.h"
32
33static void
34fd_fp_state_bind(struct pipe_context *pctx, void *hwcso)
35{
36	struct fd_context *ctx = fd_context(pctx);
37	ctx->prog.fp = hwcso;
38	ctx->dirty_shader[PIPE_SHADER_FRAGMENT] |= FD_DIRTY_SHADER_PROG;
39	ctx->dirty |= FD_DIRTY_PROG;
40}
41
42static void
43fd_vp_state_bind(struct pipe_context *pctx, void *hwcso)
44{
45	struct fd_context *ctx = fd_context(pctx);
46	ctx->prog.vp = hwcso;
47	ctx->dirty_shader[PIPE_SHADER_VERTEX] |= FD_DIRTY_SHADER_PROG;
48	ctx->dirty |= FD_DIRTY_PROG;
49}
50
51static const char *solid_fp =
52	"FRAG                                        \n"
53	"PROPERTY FS_COLOR0_WRITES_ALL_CBUFS 1       \n"
54	"DCL CONST[0]                                \n"
55	"DCL OUT[0], COLOR                           \n"
56	"  0: MOV OUT[0], CONST[0]                   \n"
57	"  1: END                                    \n";
58
59static const char *solid_vp =
60	"VERT                                        \n"
61	"DCL IN[0]                                   \n"
62	"DCL OUT[0], POSITION                        \n"
63	"  0: MOV OUT[0], IN[0]                      \n"
64	"  1: END                                    \n";
65
66static const char *blit_vp =
67	"VERT                                        \n"
68	"DCL IN[0]                                   \n"
69	"DCL IN[1]                                   \n"
70	"DCL OUT[0], GENERIC[0]                      \n"
71	"DCL OUT[1], POSITION                        \n"
72	"  0: MOV OUT[0], IN[0]                      \n"
73	"  0: MOV OUT[1], IN[1]                      \n"
74	"  1: END                                    \n";
75
76static void * assemble_tgsi(struct pipe_context *pctx,
77		const char *src, bool frag)
78{
79	struct tgsi_token toks[32];
80	struct pipe_shader_state cso = {
81			.tokens = toks,
82	};
83
84	bool ret = tgsi_text_translate(src, toks, ARRAY_SIZE(toks));
85	assume(ret);
86
87	if (frag)
88		return pctx->create_fs_state(pctx, &cso);
89	else
90		return pctx->create_vs_state(pctx, &cso);
91}
92
93static void *
94fd_prog_blit(struct pipe_context *pctx, int rts, bool depth)
95{
96	int i;
97	struct ureg_src tc;
98	struct ureg_program *ureg;
99
100	debug_assert(rts <= MAX_RENDER_TARGETS);
101
102	ureg = ureg_create(PIPE_SHADER_FRAGMENT);
103	if (!ureg)
104		return NULL;
105
106	tc = ureg_DECL_fs_input(
107			ureg, TGSI_SEMANTIC_GENERIC, 0, TGSI_INTERPOLATE_PERSPECTIVE);
108	for (i = 0; i < rts; i++)
109		ureg_TEX(ureg, ureg_DECL_output(ureg, TGSI_SEMANTIC_COLOR, i),
110				 TGSI_TEXTURE_2D, tc, ureg_DECL_sampler(ureg, i));
111	if (depth)
112		ureg_TEX(ureg,
113				 ureg_writemask(
114						 ureg_DECL_output(ureg, TGSI_SEMANTIC_POSITION, 0),
115						 TGSI_WRITEMASK_Z),
116				 TGSI_TEXTURE_2D, tc, ureg_DECL_sampler(ureg, rts));
117
118	ureg_END(ureg);
119
120	return ureg_create_shader_and_destroy(ureg, pctx);
121}
122
123
124void fd_prog_init(struct pipe_context *pctx)
125{
126	struct fd_context *ctx = fd_context(pctx);
127	int i;
128
129	pctx->bind_fs_state = fd_fp_state_bind;
130	pctx->bind_vs_state = fd_vp_state_bind;
131
132	ctx->solid_prog.fp = assemble_tgsi(pctx, solid_fp, true);
133	ctx->solid_prog.vp = assemble_tgsi(pctx, solid_vp, false);
134	ctx->blit_prog[0].vp = assemble_tgsi(pctx, blit_vp, false);
135	ctx->blit_prog[0].fp = fd_prog_blit(pctx, 1, false);
136
137	if (ctx->screen->gpu_id < 300)
138		return;
139
140	for (i = 1; i < ctx->screen->max_rts; i++) {
141		ctx->blit_prog[i].vp = ctx->blit_prog[0].vp;
142		ctx->blit_prog[i].fp = fd_prog_blit(pctx, i + 1, false);
143	}
144
145	ctx->blit_z.vp = ctx->blit_prog[0].vp;
146	ctx->blit_z.fp = fd_prog_blit(pctx, 0, true);
147	ctx->blit_zs.vp = ctx->blit_prog[0].vp;
148	ctx->blit_zs.fp = fd_prog_blit(pctx, 1, true);
149}
150
151void fd_prog_fini(struct pipe_context *pctx)
152{
153	struct fd_context *ctx = fd_context(pctx);
154	int i;
155
156	pctx->delete_vs_state(pctx, ctx->solid_prog.vp);
157	pctx->delete_fs_state(pctx, ctx->solid_prog.fp);
158	pctx->delete_vs_state(pctx, ctx->blit_prog[0].vp);
159	for (i = 0; i < ctx->screen->max_rts; i++)
160		pctx->delete_fs_state(pctx, ctx->blit_prog[i].fp);
161	pctx->delete_fs_state(pctx, ctx->blit_z.fp);
162	pctx->delete_fs_state(pctx, ctx->blit_zs.fp);
163}
164