1 /*
2 * Copyright (C) 2016 Rob Clark <robclark@freedesktop.org>
3 * Copyright © 2018 Google, Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 * Authors:
25 * Rob Clark <robclark@freedesktop.org>
26 */
27
28 #include "pipe/p_state.h"
29 #include "util/u_memory.h"
30 #include "util/u_string.h"
31
32 #include "fd6_context.h"
33 #include "fd6_pack.h"
34 #include "fd6_rasterizer.h"
35
36 struct fd_ringbuffer *
__fd6_setup_rasterizer_stateobj(struct fd_context * ctx,const struct pipe_rasterizer_state * cso,bool primitive_restart)37 __fd6_setup_rasterizer_stateobj(struct fd_context *ctx,
38 const struct pipe_rasterizer_state *cso,
39 bool primitive_restart)
40 {
41 struct fd_ringbuffer *ring = fd_ringbuffer_new_object(ctx->pipe, 26 * 4);
42 float psize_min, psize_max;
43
44 if (cso->point_size_per_vertex) {
45 psize_min = util_get_min_point_size(cso);
46 psize_max = 4092;
47 } else {
48 /* Force the point size to be as if the vertex output was disabled. */
49 psize_min = cso->point_size;
50 psize_max = cso->point_size;
51 }
52
53 OUT_REG(ring, A6XX_GRAS_CL_CNTL(.znear_clip_disable = !cso->depth_clip_near,
54 .zfar_clip_disable = !cso->depth_clip_far,
55 .unk5 = !cso->depth_clip_near ||
56 !cso->depth_clip_far,
57 .vp_clip_code_ignore = 1,
58 .zero_gb_scale_z = cso->clip_halfz));
59
60 OUT_REG(ring,
61 A6XX_GRAS_SU_CNTL(.linehalfwidth = cso->line_width / 2.0f,
62 .poly_offset = cso->offset_tri,
63 .line_mode = cso->multisample ? RECTANGULAR : BRESENHAM,
64 .cull_front = cso->cull_face & PIPE_FACE_FRONT,
65 .cull_back = cso->cull_face & PIPE_FACE_BACK,
66 .front_cw = !cso->front_ccw, ));
67
68 OUT_REG(ring,
69 A6XX_GRAS_SU_POINT_MINMAX(.min = psize_min, .max = psize_max, ),
70 A6XX_GRAS_SU_POINT_SIZE(cso->point_size));
71
72 OUT_REG(ring, A6XX_GRAS_SU_POLY_OFFSET_SCALE(cso->offset_scale),
73 A6XX_GRAS_SU_POLY_OFFSET_OFFSET(cso->offset_units),
74 A6XX_GRAS_SU_POLY_OFFSET_OFFSET_CLAMP(cso->offset_clamp));
75
76 OUT_REG(ring,
77 A6XX_PC_PRIMITIVE_CNTL_0(.provoking_vtx_last = !cso->flatshade_first,
78 .primitive_restart = primitive_restart, ));
79
80 enum a6xx_polygon_mode mode = POLYMODE6_TRIANGLES;
81 switch (cso->fill_front) {
82 case PIPE_POLYGON_MODE_POINT:
83 mode = POLYMODE6_POINTS;
84 break;
85 case PIPE_POLYGON_MODE_LINE:
86 mode = POLYMODE6_LINES;
87 break;
88 default:
89 assert(cso->fill_front == PIPE_POLYGON_MODE_FILL);
90 break;
91 }
92
93 OUT_REG(ring, A6XX_VPC_POLYGON_MODE(mode));
94 OUT_REG(ring, A6XX_PC_POLYGON_MODE(mode));
95
96 if (ctx->screen->info->a6xx.has_shading_rate) {
97 OUT_REG(ring, A6XX_RB_UNKNOWN_8A00());
98 OUT_REG(ring, A6XX_RB_UNKNOWN_8A10());
99 OUT_REG(ring, A6XX_RB_UNKNOWN_8A20());
100 OUT_REG(ring, A6XX_RB_UNKNOWN_8A30());
101 }
102
103 return ring;
104 }
105
106 void *
fd6_rasterizer_state_create(struct pipe_context * pctx,const struct pipe_rasterizer_state * cso)107 fd6_rasterizer_state_create(struct pipe_context *pctx,
108 const struct pipe_rasterizer_state *cso)
109 {
110 struct fd6_rasterizer_stateobj *so;
111
112 so = CALLOC_STRUCT(fd6_rasterizer_stateobj);
113 if (!so)
114 return NULL;
115
116 so->base = *cso;
117
118 return so;
119 }
120
121 void
fd6_rasterizer_state_delete(struct pipe_context * pctx,void * hwcso)122 fd6_rasterizer_state_delete(struct pipe_context *pctx, void *hwcso)
123 {
124 struct fd6_rasterizer_stateobj *so = hwcso;
125
126 for (unsigned i = 0; i < ARRAY_SIZE(so->stateobjs); i++)
127 if (so->stateobjs[i])
128 fd_ringbuffer_del(so->stateobjs[i]);
129
130 FREE(hwcso);
131 }
132