2 * Copyright (C) 2014 Rob Clark <robclark@freedesktop.org>
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:
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
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
24 * Rob Clark <robclark@freedesktop.org>
27 #include "pipe/p_state.h"
28 #include "util/u_blend.h"
29 #include "util/u_string.h"
30 #include "util/u_memory.h"
32 #include "fd4_blend.h"
33 #include "fd4_context.h"
34 #include "fd4_format.h"
36 static enum a3xx_rb_blend_opcode
37 blend_func(unsigned func
)
41 return BLEND_DST_PLUS_SRC
;
43 return BLEND_MIN_DST_SRC
;
45 return BLEND_MAX_DST_SRC
;
46 case PIPE_BLEND_SUBTRACT
:
47 return BLEND_SRC_MINUS_DST
;
48 case PIPE_BLEND_REVERSE_SUBTRACT
:
49 return BLEND_DST_MINUS_SRC
;
51 DBG("invalid blend func: %x", func
);
57 fd4_blend_state_create(struct pipe_context
*pctx
,
58 const struct pipe_blend_state
*cso
)
60 struct fd4_blend_stateobj
*so
;
61 enum a3xx_rop_code rop
= ROP_COPY
;
62 bool reads_dest
= false;
63 unsigned i
, mrt_blend
= 0;
65 if (cso
->logicop_enable
) {
66 rop
= cso
->logicop_func
; /* maps 1:1 */
68 switch (cso
->logicop_func
) {
69 case PIPE_LOGICOP_NOR
:
70 case PIPE_LOGICOP_AND_INVERTED
:
71 case PIPE_LOGICOP_AND_REVERSE
:
72 case PIPE_LOGICOP_INVERT
:
73 case PIPE_LOGICOP_XOR
:
74 case PIPE_LOGICOP_NAND
:
75 case PIPE_LOGICOP_AND
:
76 case PIPE_LOGICOP_EQUIV
:
77 case PIPE_LOGICOP_NOOP
:
78 case PIPE_LOGICOP_OR_INVERTED
:
79 case PIPE_LOGICOP_OR_REVERSE
:
86 so
= CALLOC_STRUCT(fd4_blend_stateobj
);
92 for (i
= 0; i
< ARRAY_SIZE(so
->rb_mrt
); i
++) {
93 const struct pipe_rt_blend_state
*rt
;
95 if (cso
->independent_blend_enable
)
100 so
->rb_mrt
[i
].blend_control_rgb
=
101 A4XX_RB_MRT_BLEND_CONTROL_RGB_SRC_FACTOR(fd_blend_factor(rt
->rgb_src_factor
)) |
102 A4XX_RB_MRT_BLEND_CONTROL_RGB_BLEND_OPCODE(blend_func(rt
->rgb_func
)) |
103 A4XX_RB_MRT_BLEND_CONTROL_RGB_DEST_FACTOR(fd_blend_factor(rt
->rgb_dst_factor
));
105 so
->rb_mrt
[i
].blend_control_alpha
=
106 A4XX_RB_MRT_BLEND_CONTROL_ALPHA_SRC_FACTOR(fd_blend_factor(rt
->alpha_src_factor
)) |
107 A4XX_RB_MRT_BLEND_CONTROL_ALPHA_BLEND_OPCODE(blend_func(rt
->alpha_func
)) |
108 A4XX_RB_MRT_BLEND_CONTROL_ALPHA_DEST_FACTOR(fd_blend_factor(rt
->alpha_dst_factor
));
110 so
->rb_mrt
[i
].blend_control_no_alpha_rgb
=
111 A4XX_RB_MRT_BLEND_CONTROL_RGB_SRC_FACTOR(fd_blend_factor(util_blend_dst_alpha_to_one(rt
->rgb_src_factor
))) |
112 A4XX_RB_MRT_BLEND_CONTROL_RGB_BLEND_OPCODE(blend_func(rt
->rgb_func
)) |
113 A4XX_RB_MRT_BLEND_CONTROL_RGB_DEST_FACTOR(fd_blend_factor(util_blend_dst_alpha_to_one(rt
->rgb_dst_factor
)));
116 so
->rb_mrt
[i
].control
=
117 A4XX_RB_MRT_CONTROL_ROP_CODE(rop
) |
118 COND(cso
->logicop_enable
, A4XX_RB_MRT_CONTROL_ROP_ENABLE
) |
119 A4XX_RB_MRT_CONTROL_COMPONENT_ENABLE(rt
->colormask
);
121 if (rt
->blend_enable
) {
122 so
->rb_mrt
[i
].control
|=
123 A4XX_RB_MRT_CONTROL_READ_DEST_ENABLE
|
124 A4XX_RB_MRT_CONTROL_BLEND
|
125 A4XX_RB_MRT_CONTROL_BLEND2
;
126 mrt_blend
|= (1 << i
);
130 so
->rb_mrt
[i
].control
|= A4XX_RB_MRT_CONTROL_READ_DEST_ENABLE
;
131 mrt_blend
|= (1 << i
);
135 so
->rb_mrt
[i
].buf_info
|= A4XX_RB_MRT_BUF_INFO_DITHER_MODE(DITHER_ALWAYS
);
138 so
->rb_fs_output
= A4XX_RB_FS_OUTPUT_ENABLE_BLEND(mrt_blend
) |
139 COND(cso
->independent_blend_enable
, A4XX_RB_FS_OUTPUT_INDEPENDENT_BLEND
);