summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/freedreno/a5xx/fd5_blend.c
blob: e5107a718b14a4174091fcb23dc0b95df452171f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
/*
 * Copyright (C) 2016 Rob Clark <robclark@freedesktop.org>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * Authors:
 *    Rob Clark <robclark@freedesktop.org>
 */

#include "pipe/p_state.h"
#include "util/u_blend.h"
#include "util/u_string.h"
#include "util/u_memory.h"

#include "fd5_blend.h"
#include "fd5_context.h"
#include "fd5_format.h"

// XXX move somewhere common.. same across a3xx/a4xx/a5xx..
static enum a3xx_rb_blend_opcode
blend_func(unsigned func)
{
	switch (func) {
	case PIPE_BLEND_ADD:
		return BLEND_DST_PLUS_SRC;
	case PIPE_BLEND_MIN:
		return BLEND_MIN_DST_SRC;
	case PIPE_BLEND_MAX:
		return BLEND_MAX_DST_SRC;
	case PIPE_BLEND_SUBTRACT:
		return BLEND_SRC_MINUS_DST;
	case PIPE_BLEND_REVERSE_SUBTRACT:
		return BLEND_DST_MINUS_SRC;
	default:
		DBG("invalid blend func: %x", func);
		return 0;
	}
}

void *
fd5_blend_state_create(struct pipe_context *pctx,
		const struct pipe_blend_state *cso)
{
	struct fd5_blend_stateobj *so;
//	enum a3xx_rop_code rop = ROP_COPY;
	bool reads_dest = false;
	unsigned i, mrt_blend = 0;

	if (cso->logicop_enable) {
//		rop = cso->logicop_func;  /* maps 1:1 */

		switch (cso->logicop_func) {
		case PIPE_LOGICOP_NOR:
		case PIPE_LOGICOP_AND_INVERTED:
		case PIPE_LOGICOP_AND_REVERSE:
		case PIPE_LOGICOP_INVERT:
		case PIPE_LOGICOP_XOR:
		case PIPE_LOGICOP_NAND:
		case PIPE_LOGICOP_AND:
		case PIPE_LOGICOP_EQUIV:
		case PIPE_LOGICOP_NOOP:
		case PIPE_LOGICOP_OR_INVERTED:
		case PIPE_LOGICOP_OR_REVERSE:
		case PIPE_LOGICOP_OR:
			reads_dest = true;
			break;
		}
	}

	so = CALLOC_STRUCT(fd5_blend_stateobj);
	if (!so)
		return NULL;

	so->base = *cso;

	for (i = 0; i < ARRAY_SIZE(so->rb_mrt); i++) {
		const struct pipe_rt_blend_state *rt;

		if (cso->independent_blend_enable)
			rt = &cso->rt[i];
		else
			rt = &cso->rt[0];

		so->rb_mrt[i].blend_control_rgb =
				A5XX_RB_MRT_BLEND_CONTROL_RGB_SRC_FACTOR(fd_blend_factor(rt->rgb_src_factor)) |
				A5XX_RB_MRT_BLEND_CONTROL_RGB_BLEND_OPCODE(blend_func(rt->rgb_func)) |
				A5XX_RB_MRT_BLEND_CONTROL_RGB_DEST_FACTOR(fd_blend_factor(rt->rgb_dst_factor));

		so->rb_mrt[i].blend_control_alpha =
				A5XX_RB_MRT_BLEND_CONTROL_ALPHA_SRC_FACTOR(fd_blend_factor(rt->alpha_src_factor)) |
				A5XX_RB_MRT_BLEND_CONTROL_ALPHA_BLEND_OPCODE(blend_func(rt->alpha_func)) |
				A5XX_RB_MRT_BLEND_CONTROL_ALPHA_DEST_FACTOR(fd_blend_factor(rt->alpha_dst_factor));

		so->rb_mrt[i].blend_control_no_alpha_rgb =
				A5XX_RB_MRT_BLEND_CONTROL_RGB_SRC_FACTOR(fd_blend_factor(util_blend_dst_alpha_to_one(rt->rgb_src_factor))) |
				A5XX_RB_MRT_BLEND_CONTROL_RGB_BLEND_OPCODE(blend_func(rt->rgb_func)) |
				A5XX_RB_MRT_BLEND_CONTROL_RGB_DEST_FACTOR(fd_blend_factor(util_blend_dst_alpha_to_one(rt->rgb_dst_factor)));


		so->rb_mrt[i].control =
//				A5XX_RB_MRT_CONTROL_ROP_CODE(rop) |
//				COND(cso->logicop_enable, A5XX_RB_MRT_CONTROL_ROP_ENABLE) |
				0x60 | /* XXX set other than RECTLIST clear blits?? */
				A5XX_RB_MRT_CONTROL_COMPONENT_ENABLE(rt->colormask);

		if (rt->blend_enable) {
			so->rb_mrt[i].control |=
//					A5XX_RB_MRT_CONTROL_READ_DEST_ENABLE |
					A5XX_RB_MRT_CONTROL_BLEND |
					A5XX_RB_MRT_CONTROL_BLEND2;
			mrt_blend |= (1 << i);
		}

		if (reads_dest) {
//			so->rb_mrt[i].control |= A5XX_RB_MRT_CONTROL_READ_DEST_ENABLE;
			mrt_blend |= (1 << i);
		}

//		if (cso->dither)
//			so->rb_mrt[i].buf_info |= A5XX_RB_MRT_BUF_INFO_DITHER_MODE(DITHER_ALWAYS);
	}

	so->rb_blend_cntl = A5XX_RB_BLEND_CNTL_ENABLE_BLEND(mrt_blend) |
		COND(cso->independent_blend_enable, A5XX_RB_BLEND_CNTL_INDEPENDENT_BLEND);

	return so;
}