1/*
2 * Copyright (C) 2012-2013 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 "fd2_rasterizer.h"
33#include "fd2_context.h"
34#include "fd2_util.h"
35
36
37void *
38fd2_rasterizer_state_create(struct pipe_context *pctx,
39		const struct pipe_rasterizer_state *cso)
40{
41	struct fd2_rasterizer_stateobj *so;
42	float psize_min, psize_max;
43
44	so = CALLOC_STRUCT(fd2_rasterizer_stateobj);
45	if (!so)
46		return NULL;
47
48	if (cso->point_size_per_vertex) {
49		psize_min = util_get_min_point_size(cso);
50		psize_max = 8192.0 - 0.0625;
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->base = *cso;
58
59	so->pa_sc_line_stipple = cso->line_stipple_enable ?
60		A2XX_PA_SC_LINE_STIPPLE_LINE_PATTERN(cso->line_stipple_pattern) |
61		A2XX_PA_SC_LINE_STIPPLE_REPEAT_COUNT(cso->line_stipple_factor) : 0;
62
63	so->pa_cl_clip_cntl = 0; // TODO
64
65	so->pa_su_vtx_cntl =
66		A2XX_PA_SU_VTX_CNTL_PIX_CENTER(cso->half_pixel_center ? PIXCENTER_OGL : PIXCENTER_D3D) |
67		A2XX_PA_SU_VTX_CNTL_QUANT_MODE(ONE_SIXTEENTH);
68
69	so->pa_su_point_size =
70		A2XX_PA_SU_POINT_SIZE_HEIGHT(cso->point_size/2) |
71		A2XX_PA_SU_POINT_SIZE_WIDTH(cso->point_size/2);
72
73	so->pa_su_point_minmax =
74		A2XX_PA_SU_POINT_MINMAX_MIN(psize_min/2) |
75		A2XX_PA_SU_POINT_MINMAX_MAX(psize_max/2);
76
77	so->pa_su_line_cntl =
78		A2XX_PA_SU_LINE_CNTL_WIDTH(cso->line_width/2);
79
80	so->pa_su_sc_mode_cntl =
81		A2XX_PA_SU_SC_MODE_CNTL_VTX_WINDOW_OFFSET_ENABLE |
82		A2XX_PA_SU_SC_MODE_CNTL_FRONT_PTYPE(fd_polygon_mode(cso->fill_front)) |
83		A2XX_PA_SU_SC_MODE_CNTL_BACK_PTYPE(fd_polygon_mode(cso->fill_back));
84
85	if (cso->cull_face & PIPE_FACE_FRONT)
86		so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_CULL_FRONT;
87	if (cso->cull_face & PIPE_FACE_BACK)
88		so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_CULL_BACK;
89	if (!cso->flatshade_first)
90		so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_PROVOKING_VTX_LAST;
91	if (!cso->front_ccw)
92		so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_FACE;
93	if (cso->line_stipple_enable)
94		so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_LINE_STIPPLE_ENABLE;
95	if (cso->multisample)
96		so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_MSAA_ENABLE;
97
98	if (cso->fill_front != PIPE_POLYGON_MODE_FILL ||
99			cso->fill_back != PIPE_POLYGON_MODE_FILL)
100		so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_POLYMODE(POLY_DUALMODE);
101	else
102		so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_POLYMODE(POLY_DISABLED);
103
104	if (cso->offset_tri)
105		so->pa_su_sc_mode_cntl |=
106			A2XX_PA_SU_SC_MODE_CNTL_POLY_OFFSET_FRONT_ENABLE |
107			A2XX_PA_SU_SC_MODE_CNTL_POLY_OFFSET_BACK_ENABLE |
108			A2XX_PA_SU_SC_MODE_CNTL_POLY_OFFSET_PARA_ENABLE;
109
110	return so;
111}
112