1 /*
2 * Copyright (C) 2016 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 "pipe/p_state.h"
28 #include "util/u_memory.h"
29 #include "util/u_string.h"
30
31 #include "fd5_context.h"
32 #include "fd5_format.h"
33 #include "fd5_zsa.h"
34
35 void *
fd5_zsa_state_create(struct pipe_context * pctx,const struct pipe_depth_stencil_alpha_state * cso)36 fd5_zsa_state_create(struct pipe_context *pctx,
37 const struct pipe_depth_stencil_alpha_state *cso)
38 {
39 struct fd5_zsa_stateobj *so;
40
41 so = CALLOC_STRUCT(fd5_zsa_stateobj);
42 if (!so)
43 return NULL;
44
45 so->base = *cso;
46
47 switch (cso->depth_func) {
48 case PIPE_FUNC_LESS:
49 case PIPE_FUNC_LEQUAL:
50 so->gras_lrz_cntl = A5XX_GRAS_LRZ_CNTL_ENABLE;
51 break;
52
53 case PIPE_FUNC_GREATER:
54 case PIPE_FUNC_GEQUAL:
55 so->gras_lrz_cntl =
56 A5XX_GRAS_LRZ_CNTL_ENABLE | A5XX_GRAS_LRZ_CNTL_GREATER;
57 break;
58
59 default:
60 /* LRZ not enabled */
61 so->gras_lrz_cntl = 0;
62 break;
63 }
64
65 if (!(cso->stencil->enabled || cso->alpha_enabled || !cso->depth_writemask))
66 so->lrz_write = true;
67
68 so->rb_depth_cntl |=
69 A5XX_RB_DEPTH_CNTL_ZFUNC(cso->depth_func); /* maps 1:1 */
70
71 if (cso->depth_enabled)
72 so->rb_depth_cntl |=
73 A5XX_RB_DEPTH_CNTL_Z_TEST_ENABLE | A5XX_RB_DEPTH_CNTL_Z_READ_ENABLE;
74
75 if (cso->depth_writemask)
76 so->rb_depth_cntl |= A5XX_RB_DEPTH_CNTL_Z_WRITE_ENABLE;
77
78 if (cso->stencil[0].enabled) {
79 const struct pipe_stencil_state *s = &cso->stencil[0];
80
81 so->rb_stencil_control |=
82 A5XX_RB_STENCIL_CONTROL_STENCIL_READ |
83 A5XX_RB_STENCIL_CONTROL_STENCIL_ENABLE |
84 A5XX_RB_STENCIL_CONTROL_FUNC(s->func) | /* maps 1:1 */
85 A5XX_RB_STENCIL_CONTROL_FAIL(fd_stencil_op(s->fail_op)) |
86 A5XX_RB_STENCIL_CONTROL_ZPASS(fd_stencil_op(s->zpass_op)) |
87 A5XX_RB_STENCIL_CONTROL_ZFAIL(fd_stencil_op(s->zfail_op));
88 so->rb_stencilrefmask |=
89 A5XX_RB_STENCILREFMASK_STENCILWRITEMASK(s->writemask) |
90 A5XX_RB_STENCILREFMASK_STENCILMASK(s->valuemask);
91
92 if (cso->stencil[1].enabled) {
93 const struct pipe_stencil_state *bs = &cso->stencil[1];
94
95 so->rb_stencil_control |=
96 A5XX_RB_STENCIL_CONTROL_STENCIL_ENABLE_BF |
97 A5XX_RB_STENCIL_CONTROL_FUNC_BF(bs->func) | /* maps 1:1 */
98 A5XX_RB_STENCIL_CONTROL_FAIL_BF(fd_stencil_op(bs->fail_op)) |
99 A5XX_RB_STENCIL_CONTROL_ZPASS_BF(fd_stencil_op(bs->zpass_op)) |
100 A5XX_RB_STENCIL_CONTROL_ZFAIL_BF(fd_stencil_op(bs->zfail_op));
101 so->rb_stencilrefmask_bf |=
102 A5XX_RB_STENCILREFMASK_BF_STENCILWRITEMASK(bs->writemask) |
103 A5XX_RB_STENCILREFMASK_BF_STENCILMASK(bs->valuemask);
104 }
105 }
106
107 if (cso->alpha_enabled) {
108 uint32_t ref = cso->alpha_ref_value * 255.0;
109 so->rb_alpha_control =
110 A5XX_RB_ALPHA_CONTROL_ALPHA_TEST |
111 A5XX_RB_ALPHA_CONTROL_ALPHA_REF(ref) |
112 A5XX_RB_ALPHA_CONTROL_ALPHA_TEST_FUNC(cso->alpha_func);
113 // so->rb_depth_control |=
114 // A5XX_RB_DEPTH_CONTROL_EARLY_Z_DISABLE;
115 }
116
117 return so;
118 }
119