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
29#include "pipe/p_state.h"
30#include "util/u_string.h"
31#include "util/u_memory.h"
32
33#include "fd6_rasterizer.h"
34#include "fd6_context.h"
35#include "fd6_format.h"
36
37void *
38fd6_rasterizer_state_create(struct pipe_context *pctx,
39		const struct pipe_rasterizer_state *cso)
40{
41	struct fd_context *ctx = fd_context(pctx);
42	struct fd6_rasterizer_stateobj *so;
43	float psize_min, psize_max;
44
45	so = CALLOC_STRUCT(fd6_rasterizer_stateobj);
46	if (!so)
47		return NULL;
48
49	so->base = *cso;
50
51	if (cso->point_size_per_vertex) {
52		psize_min = util_get_min_point_size(cso);
53		psize_max = 4092;
54	} else {
55		/* Force the point size to be as if the vertex output was disabled. */
56		psize_min = cso->point_size;
57		psize_max = cso->point_size;
58	}
59
60	so->gras_su_point_minmax =
61			A6XX_GRAS_SU_POINT_MINMAX_MIN(psize_min) |
62			A6XX_GRAS_SU_POINT_MINMAX_MAX(psize_max);
63	so->gras_su_point_size   = A6XX_GRAS_SU_POINT_SIZE(cso->point_size);
64	so->gras_su_poly_offset_scale =
65			A6XX_GRAS_SU_POLY_OFFSET_SCALE(cso->offset_scale);
66	so->gras_su_poly_offset_offset =
67			A6XX_GRAS_SU_POLY_OFFSET_OFFSET(cso->offset_units);
68	so->gras_su_poly_offset_clamp =
69			A6XX_GRAS_SU_POLY_OFFSET_OFFSET_CLAMP(cso->offset_clamp);
70
71	so->gras_su_cntl =
72			A6XX_GRAS_SU_CNTL_LINEHALFWIDTH(cso->line_width/2.0) |
73			COND(cso->multisample, A6XX_GRAS_SU_CNTL_MSAA_ENABLE);
74
75#if 0
76	so->pc_raster_cntl =
77		A6XX_PC_RASTER_CNTL_POLYMODE_FRONT_PTYPE(fd_polygon_mode(cso->fill_front)) |
78		A6XX_PC_RASTER_CNTL_POLYMODE_BACK_PTYPE(fd_polygon_mode(cso->fill_back));
79#endif
80
81#if 0
82	if (cso->fill_front != PIPE_POLYGON_MODE_FILL ||
83		cso->fill_back != PIPE_POLYGON_MODE_FILL)
84		so->pc_raster_cntl |= A6XX_PC_RASTER_CNTL_POLYMODE_ENABLE;
85#endif
86
87	if (cso->cull_face & PIPE_FACE_FRONT)
88		so->gras_su_cntl |= A6XX_GRAS_SU_CNTL_CULL_FRONT;
89	if (cso->cull_face & PIPE_FACE_BACK)
90		so->gras_su_cntl |= A6XX_GRAS_SU_CNTL_CULL_BACK;
91	if (!cso->front_ccw)
92		so->gras_su_cntl |= A6XX_GRAS_SU_CNTL_FRONT_CW;
93	if (cso->offset_tri)
94		so->gras_su_cntl |= A6XX_GRAS_SU_CNTL_POLY_OFFSET;
95
96	if (!cso->flatshade_first)
97		so->pc_primitive_cntl |= A6XX_PC_PRIMITIVE_CNTL_0_PROVOKING_VTX_LAST;
98
99//	if (!cso->depth_clip)
100//		so->gras_cl_clip_cntl |= A6XX_GRAS_CL_CLIP_CNTL_ZNEAR_CLIP_DISABLE |
101//			A6XX_GRAS_CL_CLIP_CNTL_ZFAR_CLIP_DISABLE;
102#if 0
103	if (cso->clip_halfz)
104		so->gras_cl_clip_cntl |= A6XX_GRAS_CL_CNTL_ZERO_GB_SCALE_Z;
105#endif
106
107	so->stateobj = fd_ringbuffer_new_object(ctx->pipe, 15 * 4);
108	struct fd_ringbuffer *ring = so->stateobj;
109
110	OUT_PKT4(ring, REG_A6XX_GRAS_UNKNOWN_8000, 1);
111	OUT_RING(ring, 0x80);
112	OUT_PKT4(ring, REG_A6XX_GRAS_UNKNOWN_8001, 1);
113	OUT_RING(ring, 0x0);
114	OUT_PKT4(ring, REG_A6XX_GRAS_UNKNOWN_8004, 1);
115	OUT_RING(ring, 0x0);
116
117	OUT_PKT4(ring, REG_A6XX_GRAS_SU_CNTL, 1);
118	OUT_RING(ring, so->gras_su_cntl);
119
120	OUT_PKT4(ring, REG_A6XX_GRAS_SU_POINT_MINMAX, 2);
121	OUT_RING(ring, so->gras_su_point_minmax);
122	OUT_RING(ring, so->gras_su_point_size);
123
124	OUT_PKT4(ring, REG_A6XX_GRAS_SU_POLY_OFFSET_SCALE, 3);
125	OUT_RING(ring, so->gras_su_poly_offset_scale);
126	OUT_RING(ring, so->gras_su_poly_offset_offset);
127	OUT_RING(ring, so->gras_su_poly_offset_clamp);
128
129#if 0
130	OUT_PKT4(ring, REG_A6XX_PC_RASTER_CNTL, 1);
131	OUT_RING(ring, so->pc_raster_cntl);
132
133	OUT_PKT4(ring, REG_A6XX_GRAS_CL_CNTL, 1);
134	OUT_RING(ring, so->gras_cl_clip_cntl);
135#endif
136
137	return so;
138}
139
140void
141fd6_rasterizer_state_delete(struct pipe_context *pctx, void *hwcso)
142{
143	struct fd6_rasterizer_stateobj *so = hwcso;
144
145	fd_ringbuffer_del(so->stateobj);
146	FREE(hwcso);
147}
148
149