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/nv30_winsys.h"
34 #include "nv30/nvfx_shader.h"
35
36 static void
nv30_fragprog_upload(struct nv30_context * nv30)37 nv30_fragprog_upload(struct nv30_context *nv30)
38 {
39 struct nouveau_context *nv = &nv30->base;
40 struct nv30_fragprog *fp = nv30->fragprog.program;
41 struct pipe_context *pipe = &nv30->base.pipe;
42
43 if (unlikely(!fp->buffer))
44 fp->buffer = pipe_buffer_create(pipe->screen, 0, 0, fp->insn_len * 4);
45
46 #if !UTIL_ARCH_BIG_ENDIAN
47 pipe_buffer_write(pipe, fp->buffer, 0, fp->insn_len * 4, fp->insn);
48 #else
49 {
50 struct pipe_transfer *transfer;
51 uint32_t *map;
52 int i;
53
54 map = pipe_buffer_map(pipe, fp->buffer,
55 PIPE_MAP_WRITE | PIPE_MAP_DISCARD_WHOLE_RESOURCE,
56 &transfer);
57 for (i = 0; i < fp->insn_len; i++)
58 *map++ = (fp->insn[i] >> 16) | (fp->insn[i] << 16);
59 pipe_buffer_unmap(pipe, transfer);
60 }
61 #endif
62
63 if (nv04_resource(fp->buffer)->domain != NOUVEAU_BO_VRAM)
64 nouveau_buffer_migrate(nv, nv04_resource(fp->buffer), NOUVEAU_BO_VRAM);
65 }
66
67 void
nv30_fragprog_validate(struct nv30_context * nv30)68 nv30_fragprog_validate(struct nv30_context *nv30)
69 {
70 struct nouveau_pushbuf *push = nv30->base.pushbuf;
71 struct nouveau_object *eng3d = nv30->screen->eng3d;
72 struct nv30_fragprog *fp = nv30->fragprog.program;
73 bool upload = false;
74 int i;
75
76 if (!fp->translated) {
77 _nvfx_fragprog_translate(eng3d->oclass, fp);
78 if (!fp->translated)
79 return;
80
81 upload = true;
82 }
83
84 /* update constants, also needs to be done on every fp switch as we
85 * have no idea whether the constbuf changed in the meantime
86 */
87 if (nv30->fragprog.constbuf) {
88 struct pipe_resource *constbuf = nv30->fragprog.constbuf;
89 uint32_t *cbuf = (uint32_t *)nv04_resource(constbuf)->data;
90
91 for (i = 0; i < fp->nr_consts; i++) {
92 unsigned off = fp->consts[i].offset;
93 unsigned idx = fp->consts[i].index * 4;
94
95 if (!memcmp(&fp->insn[off], &cbuf[idx], 4 * 4))
96 continue;
97 memcpy(&fp->insn[off], &cbuf[idx], 4 * 4);
98 upload = true;
99 }
100 }
101
102 if (upload)
103 nv30_fragprog_upload(nv30);
104
105 /* FP_ACTIVE_PROGRAM needs to be done again even if only the consts
106 * were updated. TEX_CACHE_CTL magic is not enough to convince the
107 * GPU that it should re-read the fragprog from VRAM... sigh.
108 */
109 if (nv30->state.fragprog != fp || upload) {
110 struct nv04_resource *r = nv04_resource(fp->buffer);
111
112 if (!PUSH_SPACE(push, 8))
113 return;
114 PUSH_RESET(push, BUFCTX_FRAGPROG);
115
116 BEGIN_NV04(push, NV30_3D(FP_ACTIVE_PROGRAM), 1);
117 PUSH_RESRC(push, NV30_3D(FP_ACTIVE_PROGRAM), BUFCTX_FRAGPROG, r, 0,
118 NOUVEAU_BO_LOW | NOUVEAU_BO_RD | NOUVEAU_BO_OR,
119 NV30_3D_FP_ACTIVE_PROGRAM_DMA0,
120 NV30_3D_FP_ACTIVE_PROGRAM_DMA1);
121 BEGIN_NV04(push, NV30_3D(FP_CONTROL), 1);
122 PUSH_DATA (push, fp->fp_control);
123 if (eng3d->oclass < NV40_3D_CLASS) {
124 BEGIN_NV04(push, NV30_3D(FP_REG_CONTROL), 1);
125 PUSH_DATA (push, 0x00010004);
126 BEGIN_NV04(push, NV30_3D(TEX_UNITS_ENABLE), 1);
127 PUSH_DATA (push, fp->texcoords);
128 } else {
129 BEGIN_NV04(push, SUBC_3D(0x0b40), 1);
130 PUSH_DATA (push, 0x00000000);
131 }
132
133 nv30->state.fragprog = fp;
134 }
135 }
136
137 static void *
nv30_fp_state_create(struct pipe_context * pipe,const struct pipe_shader_state * cso)138 nv30_fp_state_create(struct pipe_context *pipe,
139 const struct pipe_shader_state *cso)
140 {
141 struct nv30_fragprog *fp = CALLOC_STRUCT(nv30_fragprog);
142 if (!fp)
143 return NULL;
144
145 if (cso->type == PIPE_SHADER_IR_NIR) {
146 fp->pipe.tokens = nir_to_tgsi(cso->ir.nir, pipe->screen);
147 } else {
148 assert(cso->type == PIPE_SHADER_IR_TGSI);
149 /* we need to keep a local copy of the tokens */
150 fp->pipe.tokens = tgsi_dup_tokens(cso->tokens);
151 }
152
153 tgsi_scan_shader(fp->pipe.tokens, &fp->info);
154 return fp;
155 }
156
157 static void
nv30_fp_state_delete(struct pipe_context * pipe,void * hwcso)158 nv30_fp_state_delete(struct pipe_context *pipe, void *hwcso)
159 {
160 struct nv30_fragprog *fp = hwcso;
161
162 pipe_resource_reference(&fp->buffer, NULL);
163
164 if (fp->draw)
165 draw_delete_fragment_shader(nv30_context(pipe)->draw, fp->draw);
166
167 FREE((void *)fp->pipe.tokens);
168 FREE(fp->insn);
169 FREE(fp->consts);
170 FREE(fp);
171 }
172
173 static void
nv30_fp_state_bind(struct pipe_context * pipe,void * hwcso)174 nv30_fp_state_bind(struct pipe_context *pipe, void *hwcso)
175 {
176 struct nv30_context *nv30 = nv30_context(pipe);
177 struct nv30_fragprog *fp = hwcso;
178
179 /* reset the bucftx so that we don't keep a dangling reference to the fp
180 * code
181 */
182 if (fp != nv30->state.fragprog)
183 nouveau_bufctx_reset(nv30->bufctx, BUFCTX_FRAGPROG);
184
185 nv30->fragprog.program = fp;
186 nv30->dirty |= NV30_NEW_FRAGPROG;
187 }
188
189 void
nv30_fragprog_init(struct pipe_context * pipe)190 nv30_fragprog_init(struct pipe_context *pipe)
191 {
192 pipe->create_fs_state = nv30_fp_state_create;
193 pipe->bind_fs_state = nv30_fp_state_bind;
194 pipe->delete_fs_state = nv30_fp_state_delete;
195 }
196