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_rasterizer.h"
34
35 void *
fd5_rasterizer_state_create(struct pipe_context * pctx,const struct pipe_rasterizer_state * cso)36 fd5_rasterizer_state_create(struct pipe_context *pctx,
37 const struct pipe_rasterizer_state *cso)
38 {
39 struct fd5_rasterizer_stateobj *so;
40 float psize_min, psize_max;
41
42 so = CALLOC_STRUCT(fd5_rasterizer_stateobj);
43 if (!so)
44 return NULL;
45
46 so->base = *cso;
47
48 if (cso->point_size_per_vertex) {
49 psize_min = util_get_min_point_size(cso);
50 psize_max = 4092;
51 } else {
52 /* Force the point size to be as if the vertex output was disabled. */
53 psize_min = cso->point_size;
54 psize_max = cso->point_size;
55 }
56
57 so->gras_su_point_minmax = A5XX_GRAS_SU_POINT_MINMAX_MIN(psize_min) |
58 A5XX_GRAS_SU_POINT_MINMAX_MAX(psize_max);
59 so->gras_su_point_size = A5XX_GRAS_SU_POINT_SIZE(cso->point_size);
60 so->gras_su_poly_offset_scale =
61 A5XX_GRAS_SU_POLY_OFFSET_SCALE(cso->offset_scale);
62 so->gras_su_poly_offset_offset =
63 A5XX_GRAS_SU_POLY_OFFSET_OFFSET(cso->offset_units);
64 so->gras_su_poly_offset_clamp =
65 A5XX_GRAS_SU_POLY_OFFSET_OFFSET_CLAMP(cso->offset_clamp);
66
67 so->gras_su_cntl = A5XX_GRAS_SU_CNTL_LINEHALFWIDTH(cso->line_width / 2.0);
68 so->pc_raster_cntl =
69 A5XX_PC_RASTER_CNTL_POLYMODE_FRONT_PTYPE(
70 fd_polygon_mode(cso->fill_front)) |
71 A5XX_PC_RASTER_CNTL_POLYMODE_BACK_PTYPE(fd_polygon_mode(cso->fill_back));
72
73 if (cso->fill_front != PIPE_POLYGON_MODE_FILL ||
74 cso->fill_back != PIPE_POLYGON_MODE_FILL)
75 so->pc_raster_cntl |= A5XX_PC_RASTER_CNTL_POLYMODE_ENABLE;
76
77 if (cso->cull_face & PIPE_FACE_FRONT)
78 so->gras_su_cntl |= A5XX_GRAS_SU_CNTL_CULL_FRONT;
79 if (cso->cull_face & PIPE_FACE_BACK)
80 so->gras_su_cntl |= A5XX_GRAS_SU_CNTL_CULL_BACK;
81 if (!cso->front_ccw)
82 so->gras_su_cntl |= A5XX_GRAS_SU_CNTL_FRONT_CW;
83 if (cso->offset_tri)
84 so->gras_su_cntl |= A5XX_GRAS_SU_CNTL_POLY_OFFSET;
85
86 if (!cso->flatshade_first)
87 so->pc_primitive_cntl |= A5XX_PC_PRIMITIVE_CNTL_PROVOKING_VTX_LAST;
88
89 // if (!cso->depth_clip)
90 // so->gras_cl_clip_cntl |=
91 // A5XX_GRAS_CL_CLIP_CNTL_ZNEAR_CLIP_DISABLE |
92 // A5XX_GRAS_CL_CLIP_CNTL_ZFAR_CLIP_DISABLE;
93 if (cso->clip_halfz)
94 so->gras_cl_clip_cntl |= A5XX_GRAS_CL_CNTL_ZERO_GB_SCALE_Z;
95
96 return so;
97 }
98