1/*
2 * Copyright (C) 2013 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 "fd3_rasterizer.h"
33#include "fd3_context.h"
34#include "fd3_format.h"
35
36void *
37fd3_rasterizer_state_create(struct pipe_context *pctx,
38		const struct pipe_rasterizer_state *cso)
39{
40	struct fd3_rasterizer_stateobj *so;
41	float psize_min, psize_max;
42
43	so = CALLOC_STRUCT(fd3_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 = A3XX_GRAS_CL_CLIP_CNTL_IJ_PERSP_CENTER /* ??? */ |
67		COND(cso->clip_halfz, A3XX_GRAS_CL_CLIP_CNTL_ZERO_GB_SCALE_Z);
68	so->gras_su_point_minmax =
69			A3XX_GRAS_SU_POINT_MINMAX_MIN(psize_min) |
70			A3XX_GRAS_SU_POINT_MINMAX_MAX(psize_max);
71	so->gras_su_point_size   = A3XX_GRAS_SU_POINT_SIZE(cso->point_size);
72	so->gras_su_poly_offset_scale =
73			A3XX_GRAS_SU_POLY_OFFSET_SCALE_VAL(cso->offset_scale);
74	so->gras_su_poly_offset_offset =
75			A3XX_GRAS_SU_POLY_OFFSET_OFFSET(cso->offset_units * 2.0f);
76
77	so->gras_su_mode_control =
78			A3XX_GRAS_SU_MODE_CONTROL_LINEHALFWIDTH(cso->line_width/2.0);
79
80	so->pc_prim_vtx_cntl =
81		A3XX_PC_PRIM_VTX_CNTL_POLYMODE_FRONT_PTYPE(fd_polygon_mode(cso->fill_front)) |
82		A3XX_PC_PRIM_VTX_CNTL_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_cntl |= A3XX_PC_PRIM_VTX_CNTL_POLYMODE_ENABLE;
87
88	if (cso->cull_face & PIPE_FACE_FRONT)
89		so->gras_su_mode_control |= A3XX_GRAS_SU_MODE_CONTROL_CULL_FRONT;
90	if (cso->cull_face & PIPE_FACE_BACK)
91		so->gras_su_mode_control |= A3XX_GRAS_SU_MODE_CONTROL_CULL_BACK;
92	if (!cso->front_ccw)
93		so->gras_su_mode_control |= A3XX_GRAS_SU_MODE_CONTROL_FRONT_CW;
94	if (!cso->flatshade_first)
95		so->pc_prim_vtx_cntl |= A3XX_PC_PRIM_VTX_CNTL_PROVOKING_VTX_LAST;
96
97	if (cso->offset_tri)
98		so->gras_su_mode_control |= A3XX_GRAS_SU_MODE_CONTROL_POLY_OFFSET;
99	if (!cso->depth_clip_near)
100		so->gras_cl_clip_cntl |= A3XX_GRAS_CL_CLIP_CNTL_CLIP_DISABLE;
101
102	return so;
103}
104