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 */
67 reads_dest
= util_logicop_reads_dest(cso
->logicop_func
);
70 so
= CALLOC_STRUCT(fd4_blend_stateobj
);
76 for (i
= 0; i
< ARRAY_SIZE(so
->rb_mrt
); i
++) {
77 const struct pipe_rt_blend_state
*rt
;
79 if (cso
->independent_blend_enable
)
84 so
->rb_mrt
[i
].blend_control
=
85 A4XX_RB_MRT_BLEND_CONTROL_RGB_SRC_FACTOR(fd_blend_factor(rt
->rgb_src_factor
)) |
86 A4XX_RB_MRT_BLEND_CONTROL_RGB_BLEND_OPCODE(blend_func(rt
->rgb_func
)) |
87 A4XX_RB_MRT_BLEND_CONTROL_RGB_DEST_FACTOR(fd_blend_factor(rt
->rgb_dst_factor
)) |
88 A4XX_RB_MRT_BLEND_CONTROL_ALPHA_SRC_FACTOR(fd_blend_factor(rt
->alpha_src_factor
)) |
89 A4XX_RB_MRT_BLEND_CONTROL_ALPHA_BLEND_OPCODE(blend_func(rt
->alpha_func
)) |
90 A4XX_RB_MRT_BLEND_CONTROL_ALPHA_DEST_FACTOR(fd_blend_factor(rt
->alpha_dst_factor
));
92 so
->rb_mrt
[i
].control
=
93 A4XX_RB_MRT_CONTROL_ROP_CODE(rop
) |
94 COND(cso
->logicop_enable
, A4XX_RB_MRT_CONTROL_ROP_ENABLE
) |
95 A4XX_RB_MRT_CONTROL_COMPONENT_ENABLE(rt
->colormask
);
97 if (rt
->blend_enable
) {
98 so
->rb_mrt
[i
].control
|=
99 A4XX_RB_MRT_CONTROL_READ_DEST_ENABLE
|
100 A4XX_RB_MRT_CONTROL_BLEND
|
101 A4XX_RB_MRT_CONTROL_BLEND2
;
102 mrt_blend
|= (1 << i
);
106 so
->rb_mrt
[i
].control
|= A4XX_RB_MRT_CONTROL_READ_DEST_ENABLE
;
107 mrt_blend
|= (1 << i
);
111 so
->rb_mrt
[i
].buf_info
|= A4XX_RB_MRT_BUF_INFO_DITHER_MODE(DITHER_ALWAYS
);
114 so
->rb_fs_output
= A4XX_RB_FS_OUTPUT_ENABLE_BLEND(mrt_blend
) |
115 COND(cso
->independent_blend_enable
, A4XX_RB_FS_OUTPUT_INDEPENDENT_BLEND
);