1/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
2
3/*
4 * Copyright (C) 2014 Rob Clark <robclark@freedesktop.org>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
15 * Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Authors:
26 *    Rob Clark <robclark@freedesktop.org>
27 */
28
29
30#include "pipe/p_state.h"
31#include "util/u_string.h"
32#include "util/u_memory.h"
33
34#include "fd4_zsa.h"
35#include "fd4_context.h"
36#include "fd4_format.h"
37
38void *
39fd4_zsa_state_create(struct pipe_context *pctx,
40		const struct pipe_depth_stencil_alpha_state *cso)
41{
42	struct fd4_zsa_stateobj *so;
43
44	so = CALLOC_STRUCT(fd4_zsa_stateobj);
45	if (!so)
46		return NULL;
47
48	so->base = *cso;
49
50	so->rb_depth_control |=
51			A4XX_RB_DEPTH_CONTROL_ZFUNC(cso->depth.func); /* maps 1:1 */
52
53	if (cso->depth.enabled)
54		so->rb_depth_control |=
55			A4XX_RB_DEPTH_CONTROL_Z_ENABLE |
56			A4XX_RB_DEPTH_CONTROL_Z_TEST_ENABLE;
57
58	if (cso->depth.writemask)
59		so->rb_depth_control |= A4XX_RB_DEPTH_CONTROL_Z_WRITE_ENABLE;
60
61	if (cso->stencil[0].enabled) {
62		const struct pipe_stencil_state *s = &cso->stencil[0];
63
64		so->rb_stencil_control |=
65			A4XX_RB_STENCIL_CONTROL_STENCIL_READ |
66			A4XX_RB_STENCIL_CONTROL_STENCIL_ENABLE |
67			A4XX_RB_STENCIL_CONTROL_FUNC(s->func) | /* maps 1:1 */
68			A4XX_RB_STENCIL_CONTROL_FAIL(fd_stencil_op(s->fail_op)) |
69			A4XX_RB_STENCIL_CONTROL_ZPASS(fd_stencil_op(s->zpass_op)) |
70			A4XX_RB_STENCIL_CONTROL_ZFAIL(fd_stencil_op(s->zfail_op));
71		so->rb_stencil_control2 |=
72			A4XX_RB_STENCIL_CONTROL2_STENCIL_BUFFER;
73		so->rb_stencilrefmask |=
74			0xff000000 | /* ??? */
75			A4XX_RB_STENCILREFMASK_STENCILWRITEMASK(s->writemask) |
76			A4XX_RB_STENCILREFMASK_STENCILMASK(s->valuemask);
77
78		if (cso->stencil[1].enabled) {
79			const struct pipe_stencil_state *bs = &cso->stencil[1];
80
81			so->rb_stencil_control |=
82				A4XX_RB_STENCIL_CONTROL_STENCIL_ENABLE_BF |
83				A4XX_RB_STENCIL_CONTROL_FUNC_BF(bs->func) | /* maps 1:1 */
84				A4XX_RB_STENCIL_CONTROL_FAIL_BF(fd_stencil_op(bs->fail_op)) |
85				A4XX_RB_STENCIL_CONTROL_ZPASS_BF(fd_stencil_op(bs->zpass_op)) |
86				A4XX_RB_STENCIL_CONTROL_ZFAIL_BF(fd_stencil_op(bs->zfail_op));
87			so->rb_stencilrefmask_bf |=
88				0xff000000 | /* ??? */
89				A4XX_RB_STENCILREFMASK_BF_STENCILWRITEMASK(bs->writemask) |
90				A4XX_RB_STENCILREFMASK_BF_STENCILMASK(bs->valuemask);
91		}
92	}
93
94	if (cso->alpha.enabled) {
95		uint32_t ref = cso->alpha.ref_value * 255.0;
96		so->gras_alpha_control =
97			A4XX_GRAS_ALPHA_CONTROL_ALPHA_TEST_ENABLE;
98		so->rb_alpha_control =
99			A4XX_RB_ALPHA_CONTROL_ALPHA_TEST |
100			A4XX_RB_ALPHA_CONTROL_ALPHA_REF(ref) |
101			A4XX_RB_ALPHA_CONTROL_ALPHA_TEST_FUNC(cso->alpha.func);
102		so->rb_depth_control |=
103			A4XX_RB_DEPTH_CONTROL_EARLY_Z_DISABLE;
104	}
105
106	return so;
107}
108