1 /*
2 * Copyright (C) 2014 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
28 #include "pipe/p_state.h"
29 #include "util/u_string.h"
30 #include "util/u_memory.h"
31
32 #include "fd4_rasterizer.h"
33 #include "fd4_context.h"
34 #include "fd4_format.h"
35
36 void *
fd4_rasterizer_state_create(struct pipe_context * pctx,const struct pipe_rasterizer_state * cso)37 fd4_rasterizer_state_create(struct pipe_context *pctx,
38 const struct pipe_rasterizer_state *cso)
39 {
40 struct fd4_rasterizer_stateobj *so;
41 float psize_min, psize_max;
42
43 so = CALLOC_STRUCT(fd4_rasterizer_stateobj);
44 if (!so)
45 return NULL;
46
47 so->base = *cso;
48
49 if (cso->point_size_per_vertex) {
50 psize_min = util_get_min_point_size(cso);
51 psize_max = 4092;
52 } else {
53 /* Force the point size to be as if the vertex output was disabled. */
54 psize_min = cso->point_size;
55 psize_max = cso->point_size;
56 }
57
58 /*
59 if (cso->line_stipple_enable) {
60 ??? TODO line stipple
61 }
62 TODO cso->half_pixel_center
63 if (cso->multisample)
64 TODO
65 */
66 so->gras_cl_clip_cntl = 0x80000; /* ??? */
67 so->gras_su_point_minmax =
68 A4XX_GRAS_SU_POINT_MINMAX_MIN(psize_min) |
69 A4XX_GRAS_SU_POINT_MINMAX_MAX(psize_max);
70 so->gras_su_point_size = A4XX_GRAS_SU_POINT_SIZE(cso->point_size);
71 so->gras_su_poly_offset_scale =
72 A4XX_GRAS_SU_POLY_OFFSET_SCALE(cso->offset_scale);
73 so->gras_su_poly_offset_offset =
74 A4XX_GRAS_SU_POLY_OFFSET_OFFSET(cso->offset_units * 2.0f);
75 so->gras_su_poly_offset_clamp =
76 A4XX_GRAS_SU_POLY_OFFSET_CLAMP(cso->offset_clamp);
77
78 so->gras_su_mode_control =
79 A4XX_GRAS_SU_MODE_CONTROL_LINEHALFWIDTH(cso->line_width/2.0);
80 so->pc_prim_vtx_cntl2 =
81 A4XX_PC_PRIM_VTX_CNTL2_POLYMODE_FRONT_PTYPE(fd_polygon_mode(cso->fill_front)) |
82 A4XX_PC_PRIM_VTX_CNTL2_POLYMODE_BACK_PTYPE(fd_polygon_mode(cso->fill_back));
83
84 if (cso->fill_front != PIPE_POLYGON_MODE_FILL ||
85 cso->fill_back != PIPE_POLYGON_MODE_FILL)
86 so->pc_prim_vtx_cntl2 |= A4XX_PC_PRIM_VTX_CNTL2_POLYMODE_ENABLE;
87
88 if (cso->cull_face & PIPE_FACE_FRONT)
89 so->gras_su_mode_control |= A4XX_GRAS_SU_MODE_CONTROL_CULL_FRONT;
90 if (cso->cull_face & PIPE_FACE_BACK)
91 so->gras_su_mode_control |= A4XX_GRAS_SU_MODE_CONTROL_CULL_BACK;
92 if (!cso->front_ccw)
93 so->gras_su_mode_control |= A4XX_GRAS_SU_MODE_CONTROL_FRONT_CW;
94 if (!cso->flatshade_first)
95 so->pc_prim_vtx_cntl |= A4XX_PC_PRIM_VTX_CNTL_PROVOKING_VTX_LAST;
96
97 if (cso->offset_tri)
98 so->gras_su_mode_control |= A4XX_GRAS_SU_MODE_CONTROL_POLY_OFFSET;
99
100 if (!cso->depth_clip_near)
101 so->gras_cl_clip_cntl |= A4XX_GRAS_CL_CLIP_CNTL_ZNEAR_CLIP_DISABLE |
102 A4XX_GRAS_CL_CLIP_CNTL_ZFAR_CLIP_DISABLE;
103 if (cso->clip_halfz)
104 so->gras_cl_clip_cntl |= A4XX_GRAS_CL_CLIP_CNTL_ZERO_GB_SCALE_Z;
105
106 return so;
107 }
108