1 /*
2 * Copyright 2012 Red Hat Inc.
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 shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 *
24 */
25
26 #include "draw/draw_context.h"
27 #include "tgsi/tgsi_parse.h"
28 #include "nir/nir_to_tgsi.h"
29
30 #include "nv_object.xml.h"
31 #include "nv30/nv30-40_3d.xml.h"
32 #include "nv30/nv30_context.h"
33 #include "nv30/nvfx_shader.h"
34
35 static void
nv30_fragprog_upload(struct nv30_context * nv30)36 nv30_fragprog_upload(struct nv30_context *nv30)
37 {
38 struct nouveau_context *nv = &nv30->base;
39 struct nv30_fragprog *fp = nv30->fragprog.program;
40 struct pipe_context *pipe = &nv30->base.pipe;
41
42 if (unlikely(!fp->buffer))
43 fp->buffer = pipe_buffer_create(pipe->screen, 0, 0, fp->insn_len * 4);
44
45 #if !UTIL_ARCH_BIG_ENDIAN
46 pipe_buffer_write(pipe, fp->buffer, 0, fp->insn_len * 4, fp->insn);
47 #else
48 {
49 struct pipe_transfer *transfer;
50 uint32_t *map;
51 int i;
52
53 map = pipe_buffer_map(pipe, fp->buffer,
54 PIPE_MAP_WRITE | PIPE_MAP_DISCARD_WHOLE_RESOURCE,
55 &transfer);
56 for (i = 0; i < fp->insn_len; i++)
57 *map++ = (fp->insn[i] >> 16) | (fp->insn[i] << 16);
58 pipe_buffer_unmap(pipe, transfer);
59 }
60 #endif
61
62 if (nv04_resource(fp->buffer)->domain != NOUVEAU_BO_VRAM)
63 nouveau_buffer_migrate(nv, nv04_resource(fp->buffer), NOUVEAU_BO_VRAM);
64 }
65
66 void
nv30_fragprog_validate(struct nv30_context * nv30)67 nv30_fragprog_validate(struct nv30_context *nv30)
68 {
69 struct nouveau_pushbuf *push = nv30->base.pushbuf;
70 struct nouveau_object *eng3d = nv30->screen->eng3d;
71 struct nv30_fragprog *fp = nv30->fragprog.program;
72 bool upload = false;
73 int i;
74
75 if (!fp->translated) {
76 _nvfx_fragprog_translate(eng3d->oclass, fp);
77 if (!fp->translated)
78 return;
79
80 upload = true;
81 }
82
83 /* update constants, also needs to be done on every fp switch as we
84 * have no idea whether the constbuf changed in the meantime
85 */
86 if (nv30->fragprog.constbuf) {
87 struct pipe_resource *constbuf = nv30->fragprog.constbuf;
88 uint32_t *cbuf = (uint32_t *)nv04_resource(constbuf)->data;
89
90 for (i = 0; i < fp->nr_consts; i++) {
91 unsigned off = fp->consts[i].offset;
92 unsigned idx = fp->consts[i].index * 4;
93
94 if (!memcmp(&fp->insn[off], &cbuf[idx], 4 * 4))
95 continue;
96 memcpy(&fp->insn[off], &cbuf[idx], 4 * 4);
97 upload = true;
98 }
99 }
100
101 if (upload)
102 nv30_fragprog_upload(nv30);
103
104 /* FP_ACTIVE_PROGRAM needs to be done again even if only the consts
105 * were updated. TEX_CACHE_CTL magic is not enough to convince the
106 * GPU that it should re-read the fragprog from VRAM... sigh.
107 */
108 if (nv30->state.fragprog != fp || upload) {
109 struct nv04_resource *r = nv04_resource(fp->buffer);
110
111 if (!PUSH_SPACE(push, 8))
112 return;
113 PUSH_RESET(push, BUFCTX_FRAGPROG);
114
115 BEGIN_NV04(push, NV30_3D(FP_ACTIVE_PROGRAM), 1);
116 PUSH_RESRC(push, NV30_3D(FP_ACTIVE_PROGRAM), BUFCTX_FRAGPROG, r, 0,
117 NOUVEAU_BO_LOW | NOUVEAU_BO_RD | NOUVEAU_BO_OR,
118 NV30_3D_FP_ACTIVE_PROGRAM_DMA0,
119 NV30_3D_FP_ACTIVE_PROGRAM_DMA1);
120 BEGIN_NV04(push, NV30_3D(FP_CONTROL), 1);
121 PUSH_DATA (push, fp->fp_control);
122 if (eng3d->oclass < NV40_3D_CLASS) {
123 BEGIN_NV04(push, NV30_3D(FP_REG_CONTROL), 1);
124 PUSH_DATA (push, 0x00010004);
125 BEGIN_NV04(push, NV30_3D(TEX_UNITS_ENABLE), 1);
126 PUSH_DATA (push, fp->texcoords);
127 } else {
128 BEGIN_NV04(push, SUBC_3D(0x0b40), 1);
129 PUSH_DATA (push, 0x00000000);
130 }
131
132 nv30->state.fragprog = fp;
133 }
134 }
135
136 static void *
nv30_fp_state_create(struct pipe_context * pipe,const struct pipe_shader_state * cso)137 nv30_fp_state_create(struct pipe_context *pipe,
138 const struct pipe_shader_state *cso)
139 {
140 struct nv30_fragprog *fp = CALLOC_STRUCT(nv30_fragprog);
141 if (!fp)
142 return NULL;
143
144 if (cso->type == PIPE_SHADER_IR_NIR) {
145 fp->pipe.tokens = nir_to_tgsi(cso->ir.nir, pipe->screen);
146 } else {
147 assert(cso->type == PIPE_SHADER_IR_TGSI);
148 /* we need to keep a local copy of the tokens */
149 fp->pipe.tokens = tgsi_dup_tokens(cso->tokens);
150 }
151
152 tgsi_scan_shader(fp->pipe.tokens, &fp->info);
153 return fp;
154 }
155
156 static void
nv30_fp_state_delete(struct pipe_context * pipe,void * hwcso)157 nv30_fp_state_delete(struct pipe_context *pipe, void *hwcso)
158 {
159 struct nv30_fragprog *fp = hwcso;
160
161 pipe_resource_reference(&fp->buffer, NULL);
162
163 if (fp->draw)
164 draw_delete_fragment_shader(nv30_context(pipe)->draw, fp->draw);
165
166 FREE((void *)fp->pipe.tokens);
167 FREE(fp->insn);
168 FREE(fp->consts);
169 FREE(fp);
170 }
171
172 static void
nv30_fp_state_bind(struct pipe_context * pipe,void * hwcso)173 nv30_fp_state_bind(struct pipe_context *pipe, void *hwcso)
174 {
175 struct nv30_context *nv30 = nv30_context(pipe);
176 struct nv30_fragprog *fp = hwcso;
177
178 /* reset the bucftx so that we don't keep a dangling reference to the fp
179 * code
180 */
181 if (fp != nv30->state.fragprog)
182 nouveau_bufctx_reset(nv30->bufctx, BUFCTX_FRAGPROG);
183
184 nv30->fragprog.program = fp;
185 nv30->dirty |= NV30_NEW_FRAGPROG;
186 }
187
188 void
nv30_fragprog_init(struct pipe_context * pipe)189 nv30_fragprog_init(struct pipe_context *pipe)
190 {
191 pipe->create_fs_state = nv30_fp_state_create;
192 pipe->bind_fs_state = nv30_fp_state_bind;
193 pipe->delete_fs_state = nv30_fp_state_delete;
194 }
195