2 * Copyright (C) 2016 Rob Clark <robclark@freedesktop.org>
3 * Copyright © 2018 Google, Inc.
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:
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
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
25 * Rob Clark <robclark@freedesktop.org>
28 #include "pipe/p_state.h"
29 #include "util/u_blend.h"
30 #include "util/u_string.h"
31 #include "util/u_memory.h"
33 #include "fd6_blend.h"
34 #include "fd6_context.h"
35 #include "fd6_format.h"
37 // XXX move somewhere common.. same across a3xx/a4xx/a5xx..
38 static enum a3xx_rb_blend_opcode
39 blend_func(unsigned func
)
43 return BLEND_DST_PLUS_SRC
;
45 return BLEND_MIN_DST_SRC
;
47 return BLEND_MAX_DST_SRC
;
48 case PIPE_BLEND_SUBTRACT
:
49 return BLEND_SRC_MINUS_DST
;
50 case PIPE_BLEND_REVERSE_SUBTRACT
:
51 return BLEND_DST_MINUS_SRC
;
53 DBG("invalid blend func: %x", func
);
59 fd6_blend_state_create(struct pipe_context
*pctx
,
60 const struct pipe_blend_state
*cso
)
62 struct fd6_blend_stateobj
*so
;
63 enum a3xx_rop_code rop
= ROP_COPY
;
64 bool reads_dest
= false;
65 unsigned i
, mrt_blend
= 0;
67 if (cso
->logicop_enable
) {
68 rop
= cso
->logicop_func
; /* maps 1:1 */
70 switch (cso
->logicop_func
) {
71 case PIPE_LOGICOP_NOR
:
72 case PIPE_LOGICOP_AND_INVERTED
:
73 case PIPE_LOGICOP_AND_REVERSE
:
74 case PIPE_LOGICOP_INVERT
:
75 case PIPE_LOGICOP_XOR
:
76 case PIPE_LOGICOP_NAND
:
77 case PIPE_LOGICOP_AND
:
78 case PIPE_LOGICOP_EQUIV
:
79 case PIPE_LOGICOP_NOOP
:
80 case PIPE_LOGICOP_OR_INVERTED
:
81 case PIPE_LOGICOP_OR_REVERSE
:
88 so
= CALLOC_STRUCT(fd6_blend_stateobj
);
94 for (i
= 0; i
< ARRAY_SIZE(so
->rb_mrt
); i
++) {
95 const struct pipe_rt_blend_state
*rt
;
97 if (cso
->independent_blend_enable
)
102 so
->rb_mrt
[i
].blend_control_rgb
=
103 A6XX_RB_MRT_BLEND_CONTROL_RGB_SRC_FACTOR(fd_blend_factor(rt
->rgb_src_factor
)) |
104 A6XX_RB_MRT_BLEND_CONTROL_RGB_BLEND_OPCODE(blend_func(rt
->rgb_func
)) |
105 A6XX_RB_MRT_BLEND_CONTROL_RGB_DEST_FACTOR(fd_blend_factor(rt
->rgb_dst_factor
));
107 so
->rb_mrt
[i
].blend_control_alpha
=
108 A6XX_RB_MRT_BLEND_CONTROL_ALPHA_SRC_FACTOR(fd_blend_factor(rt
->alpha_src_factor
)) |
109 A6XX_RB_MRT_BLEND_CONTROL_ALPHA_BLEND_OPCODE(blend_func(rt
->alpha_func
)) |
110 A6XX_RB_MRT_BLEND_CONTROL_ALPHA_DEST_FACTOR(fd_blend_factor(rt
->alpha_dst_factor
));
112 so
->rb_mrt
[i
].blend_control_no_alpha_rgb
=
113 A6XX_RB_MRT_BLEND_CONTROL_RGB_SRC_FACTOR(fd_blend_factor(util_blend_dst_alpha_to_one(rt
->rgb_src_factor
))) |
114 A6XX_RB_MRT_BLEND_CONTROL_RGB_BLEND_OPCODE(blend_func(rt
->rgb_func
)) |
115 A6XX_RB_MRT_BLEND_CONTROL_RGB_DEST_FACTOR(fd_blend_factor(util_blend_dst_alpha_to_one(rt
->rgb_dst_factor
)));
118 so
->rb_mrt
[i
].control
=
119 A6XX_RB_MRT_CONTROL_ROP_CODE(rop
) |
120 COND(cso
->logicop_enable
, A6XX_RB_MRT_CONTROL_ROP_ENABLE
) |
121 A6XX_RB_MRT_CONTROL_COMPONENT_ENABLE(rt
->colormask
);
123 if (rt
->blend_enable
) {
124 so
->rb_mrt
[i
].control
|=
125 // A6XX_RB_MRT_CONTROL_READ_DEST_ENABLE |
126 A6XX_RB_MRT_CONTROL_BLEND
|
127 A6XX_RB_MRT_CONTROL_BLEND2
;
128 mrt_blend
|= (1 << i
);
132 // so->rb_mrt[i].control |= A6XX_RB_MRT_CONTROL_READ_DEST_ENABLE;
133 mrt_blend
|= (1 << i
);
138 so
->rb_dither_cntl
= A6XX_RB_DITHER_CNTL_DITHER_MODE_MRT0(DITHER_ALWAYS
) |
139 A6XX_RB_DITHER_CNTL_DITHER_MODE_MRT1(DITHER_ALWAYS
) |
140 A6XX_RB_DITHER_CNTL_DITHER_MODE_MRT2(DITHER_ALWAYS
) |
141 A6XX_RB_DITHER_CNTL_DITHER_MODE_MRT3(DITHER_ALWAYS
) |
142 A6XX_RB_DITHER_CNTL_DITHER_MODE_MRT4(DITHER_ALWAYS
) |
143 A6XX_RB_DITHER_CNTL_DITHER_MODE_MRT5(DITHER_ALWAYS
) |
144 A6XX_RB_DITHER_CNTL_DITHER_MODE_MRT6(DITHER_ALWAYS
) |
145 A6XX_RB_DITHER_CNTL_DITHER_MODE_MRT7(DITHER_ALWAYS
);
148 so
->rb_blend_cntl
= A6XX_RB_BLEND_CNTL_ENABLE_BLEND(mrt_blend
) |
149 COND(cso
->alpha_to_coverage
, A6XX_RB_BLEND_CNTL_ALPHA_TO_COVERAGE
) |
150 COND(cso
->independent_blend_enable
, A6XX_RB_BLEND_CNTL_INDEPENDENT_BLEND
);
151 so
->sp_blend_cntl
= A6XX_SP_BLEND_CNTL_UNK8
|
152 COND(cso
->alpha_to_coverage
, A6XX_SP_BLEND_CNTL_ALPHA_TO_COVERAGE
) |
153 COND(mrt_blend
, A6XX_SP_BLEND_CNTL_ENABLED
);