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 "util/u_simple_shaders.h"
31
32 #include "freedreno_context.h"
33 #include "freedreno_program.h"
34
35 static void
update_bound_stage(struct fd_context * ctx,enum pipe_shader_type shader,bool bound)36 update_bound_stage(struct fd_context *ctx, enum pipe_shader_type shader,
37 bool bound) assert_dt
38 {
39 if (bound) {
40 ctx->bound_shader_stages |= BIT(shader);
41 } else {
42 ctx->bound_shader_stages &= ~BIT(shader);
43 }
44 }
45
46 static void
fd_set_patch_vertices(struct pipe_context * pctx,uint8_t patch_vertices)47 fd_set_patch_vertices(struct pipe_context *pctx, uint8_t patch_vertices) in_dt
48 {
49 struct fd_context *ctx = fd_context(pctx);
50
51 ctx->patch_vertices = patch_vertices;
52 }
53
54 static void
fd_vs_state_bind(struct pipe_context * pctx,void * hwcso)55 fd_vs_state_bind(struct pipe_context *pctx, void *hwcso) in_dt
56 {
57 struct fd_context *ctx = fd_context(pctx);
58 ctx->prog.vs = hwcso;
59 fd_context_dirty_shader(ctx, PIPE_SHADER_VERTEX, FD_DIRTY_SHADER_PROG);
60 update_bound_stage(ctx, PIPE_SHADER_VERTEX, !!hwcso);
61 }
62
63 static void
fd_tcs_state_bind(struct pipe_context * pctx,void * hwcso)64 fd_tcs_state_bind(struct pipe_context *pctx, void *hwcso) in_dt
65 {
66 struct fd_context *ctx = fd_context(pctx);
67 ctx->prog.hs = hwcso;
68 fd_context_dirty_shader(ctx, PIPE_SHADER_TESS_CTRL, FD_DIRTY_SHADER_PROG);
69 update_bound_stage(ctx, PIPE_SHADER_TESS_CTRL, !!hwcso);
70 }
71
72 static void
fd_tes_state_bind(struct pipe_context * pctx,void * hwcso)73 fd_tes_state_bind(struct pipe_context *pctx, void *hwcso) in_dt
74 {
75 struct fd_context *ctx = fd_context(pctx);
76 ctx->prog.ds = hwcso;
77 fd_context_dirty_shader(ctx, PIPE_SHADER_TESS_EVAL, FD_DIRTY_SHADER_PROG);
78 update_bound_stage(ctx, PIPE_SHADER_TESS_EVAL, !!hwcso);
79 }
80
81 static void
fd_gs_state_bind(struct pipe_context * pctx,void * hwcso)82 fd_gs_state_bind(struct pipe_context *pctx, void *hwcso) in_dt
83 {
84 struct fd_context *ctx = fd_context(pctx);
85 ctx->prog.gs = hwcso;
86 fd_context_dirty_shader(ctx, PIPE_SHADER_GEOMETRY, FD_DIRTY_SHADER_PROG);
87 update_bound_stage(ctx, PIPE_SHADER_GEOMETRY, !!hwcso);
88 }
89
90 static void
fd_fs_state_bind(struct pipe_context * pctx,void * hwcso)91 fd_fs_state_bind(struct pipe_context *pctx, void *hwcso) in_dt
92 {
93 struct fd_context *ctx = fd_context(pctx);
94 ctx->prog.fs = hwcso;
95 fd_context_dirty_shader(ctx, PIPE_SHADER_FRAGMENT, FD_DIRTY_SHADER_PROG);
96 update_bound_stage(ctx, PIPE_SHADER_FRAGMENT, !!hwcso);
97 }
98
99 static const char *solid_fs = "FRAG \n"
100 "PROPERTY FS_COLOR0_WRITES_ALL_CBUFS 1 \n"
101 "DCL CONST[0] \n"
102 "DCL OUT[0], COLOR \n"
103 " 0: MOV OUT[0], CONST[0] \n"
104 " 1: END \n";
105
106 static const char *solid_vs = "VERT \n"
107 "DCL IN[0] \n"
108 "DCL OUT[0], POSITION \n"
109 " 0: MOV OUT[0], IN[0] \n"
110 " 1: END \n";
111
112 static void *
assemble_tgsi(struct pipe_context * pctx,const char * src,bool frag)113 assemble_tgsi(struct pipe_context *pctx, const char *src, bool frag)
114 {
115 struct tgsi_token toks[32];
116 struct pipe_shader_state cso = {
117 .tokens = toks,
118 };
119
120 bool ret = tgsi_text_translate(src, toks, ARRAY_SIZE(toks));
121 assume(ret);
122
123 if (frag)
124 return pctx->create_fs_state(pctx, &cso);
125 else
126 return pctx->create_vs_state(pctx, &cso);
127 }
128
129 /* the correct semantic to use for the texcoord varying depends on pipe-cap: */
130 static enum tgsi_semantic
texcoord_semantic(struct pipe_context * pctx)131 texcoord_semantic(struct pipe_context *pctx)
132 {
133 struct pipe_screen *pscreen = pctx->screen;
134
135 if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_TEXCOORD)) {
136 return TGSI_SEMANTIC_TEXCOORD;
137 } else {
138 return TGSI_SEMANTIC_GENERIC;
139 }
140 }
141
142 static void *
fd_prog_blit_vs(struct pipe_context * pctx)143 fd_prog_blit_vs(struct pipe_context *pctx)
144 {
145 struct ureg_program *ureg;
146
147 ureg = ureg_create(PIPE_SHADER_VERTEX);
148 if (!ureg)
149 return NULL;
150
151 struct ureg_src in0 = ureg_DECL_vs_input(ureg, 0);
152 struct ureg_src in1 = ureg_DECL_vs_input(ureg, 1);
153
154 struct ureg_dst out0 = ureg_DECL_output(ureg, texcoord_semantic(pctx), 0);
155 struct ureg_dst out1 = ureg_DECL_output(ureg, TGSI_SEMANTIC_POSITION, 1);
156
157 ureg_MOV(ureg, out0, in0);
158 ureg_MOV(ureg, out1, in1);
159
160 ureg_END(ureg);
161
162 return ureg_create_shader_and_destroy(ureg, pctx);
163 }
164
165 static void *
fd_prog_blit_fs(struct pipe_context * pctx,int rts,bool depth)166 fd_prog_blit_fs(struct pipe_context *pctx, int rts, bool depth)
167 {
168 int i;
169 struct ureg_src tc;
170 struct ureg_program *ureg;
171
172 debug_assert(rts <= MAX_RENDER_TARGETS);
173
174 ureg = ureg_create(PIPE_SHADER_FRAGMENT);
175 if (!ureg)
176 return NULL;
177
178 tc = ureg_DECL_fs_input(ureg, texcoord_semantic(pctx), 0,
179 TGSI_INTERPOLATE_PERSPECTIVE);
180 for (i = 0; i < rts; i++)
181 ureg_TEX(ureg, ureg_DECL_output(ureg, TGSI_SEMANTIC_COLOR, i),
182 TGSI_TEXTURE_2D, tc, ureg_DECL_sampler(ureg, i));
183 if (depth)
184 ureg_TEX(ureg,
185 ureg_writemask(ureg_DECL_output(ureg, TGSI_SEMANTIC_POSITION, 0),
186 TGSI_WRITEMASK_Z),
187 TGSI_TEXTURE_2D, tc, ureg_DECL_sampler(ureg, rts));
188
189 ureg_END(ureg);
190
191 return ureg_create_shader_and_destroy(ureg, pctx);
192 }
193
194 void
fd_prog_init(struct pipe_context * pctx)195 fd_prog_init(struct pipe_context *pctx)
196 {
197 struct fd_context *ctx = fd_context(pctx);
198 int i;
199
200 pctx->bind_vs_state = fd_vs_state_bind;
201 pctx->bind_tcs_state = fd_tcs_state_bind;
202 pctx->bind_tes_state = fd_tes_state_bind;
203 pctx->bind_gs_state = fd_gs_state_bind;
204 pctx->bind_fs_state = fd_fs_state_bind;
205 pctx->set_patch_vertices = fd_set_patch_vertices;
206
207 ctx->solid_prog.fs = assemble_tgsi(pctx, solid_fs, true);
208 ctx->solid_prog.vs = assemble_tgsi(pctx, solid_vs, false);
209
210 if (ctx->screen->gen >= 6) {
211 ctx->solid_layered_prog.fs = assemble_tgsi(pctx, solid_fs, true);
212 ctx->solid_layered_prog.vs = util_make_layered_clear_vertex_shader(pctx);
213 }
214
215 if (ctx->screen->gen >= 5)
216 return;
217
218 ctx->blit_prog[0].vs = fd_prog_blit_vs(pctx);
219 ctx->blit_prog[0].fs = fd_prog_blit_fs(pctx, 1, false);
220
221 if (ctx->screen->gen < 3)
222 return;
223
224 for (i = 1; i < ctx->screen->max_rts; i++) {
225 ctx->blit_prog[i].vs = ctx->blit_prog[0].vs;
226 ctx->blit_prog[i].fs = fd_prog_blit_fs(pctx, i + 1, false);
227 }
228
229 ctx->blit_z.vs = ctx->blit_prog[0].vs;
230 ctx->blit_z.fs = fd_prog_blit_fs(pctx, 0, true);
231 ctx->blit_zs.vs = ctx->blit_prog[0].vs;
232 ctx->blit_zs.fs = fd_prog_blit_fs(pctx, 1, true);
233 }
234
235 void
fd_prog_fini(struct pipe_context * pctx)236 fd_prog_fini(struct pipe_context *pctx)
237 {
238 struct fd_context *ctx = fd_context(pctx);
239 int i;
240
241 pctx->delete_vs_state(pctx, ctx->solid_prog.vs);
242 pctx->delete_fs_state(pctx, ctx->solid_prog.fs);
243
244 if (ctx->screen->gen >= 6) {
245 pctx->delete_vs_state(pctx, ctx->solid_layered_prog.vs);
246 pctx->delete_fs_state(pctx, ctx->solid_layered_prog.fs);
247 }
248
249 if (ctx->screen->gen >= 5)
250 return;
251
252 pctx->delete_vs_state(pctx, ctx->blit_prog[0].vs);
253 pctx->delete_fs_state(pctx, ctx->blit_prog[0].fs);
254
255 if (ctx->screen->gen < 3)
256 return;
257
258 for (i = 1; i < ctx->screen->max_rts; i++)
259 pctx->delete_fs_state(pctx, ctx->blit_prog[i].fs);
260 pctx->delete_fs_state(pctx, ctx->blit_z.fs);
261 pctx->delete_fs_state(pctx, ctx->blit_zs.fs);
262 }
263