2 * Copyright (C) 2012-2013 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 "fd2_blend.h"
33 #include "fd2_context.h"
37 static enum a2xx_rb_blend_opcode
38 blend_func(unsigned func
)
42 return BLEND2_DST_PLUS_SRC
;
44 return BLEND2_MIN_DST_SRC
;
46 return BLEND2_MAX_DST_SRC
;
47 case PIPE_BLEND_SUBTRACT
:
48 return BLEND2_SRC_MINUS_DST
;
49 case PIPE_BLEND_REVERSE_SUBTRACT
:
50 return BLEND2_DST_MINUS_SRC
;
52 DBG("invalid blend func: %x", func
);
58 fd2_blend_state_create(struct pipe_context
*pctx
,
59 const struct pipe_blend_state
*cso
)
61 const struct pipe_rt_blend_state
*rt
= &cso
->rt
[0];
62 struct fd2_blend_stateobj
*so
;
63 unsigned rop
= PIPE_LOGICOP_COPY
;
65 if (cso
->logicop_enable
)
66 rop
= cso
->logicop_func
; /* 1:1 mapping with hw */
68 if (cso
->independent_blend_enable
) {
69 DBG("Unsupported! independent blend state");
73 so
= CALLOC_STRUCT(fd2_blend_stateobj
);
79 so
->rb_colorcontrol
= A2XX_RB_COLORCONTROL_ROP_CODE(rop
);
82 A2XX_RB_BLEND_CONTROL_COLOR_SRCBLEND(fd_blend_factor(rt
->rgb_src_factor
)) |
83 A2XX_RB_BLEND_CONTROL_COLOR_COMB_FCN(blend_func(rt
->rgb_func
)) |
84 A2XX_RB_BLEND_CONTROL_COLOR_DESTBLEND(fd_blend_factor(rt
->rgb_dst_factor
));
86 /* hardware doesn't support SRC_ALPHA_SATURATE for alpha, but it is equivalent to ONE */
87 unsigned alpha_src_factor
= rt
->alpha_src_factor
;
88 if (alpha_src_factor
== PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE
)
89 alpha_src_factor
= PIPE_BLENDFACTOR_ONE
;
91 so
->rb_blendcontrol
|=
92 A2XX_RB_BLEND_CONTROL_ALPHA_SRCBLEND(fd_blend_factor(alpha_src_factor
)) |
93 A2XX_RB_BLEND_CONTROL_ALPHA_COMB_FCN(blend_func(rt
->alpha_func
)) |
94 A2XX_RB_BLEND_CONTROL_ALPHA_DESTBLEND(fd_blend_factor(rt
->alpha_dst_factor
));
96 if (rt
->colormask
& PIPE_MASK_R
)
97 so
->rb_colormask
|= A2XX_RB_COLOR_MASK_WRITE_RED
;
98 if (rt
->colormask
& PIPE_MASK_G
)
99 so
->rb_colormask
|= A2XX_RB_COLOR_MASK_WRITE_GREEN
;
100 if (rt
->colormask
& PIPE_MASK_B
)
101 so
->rb_colormask
|= A2XX_RB_COLOR_MASK_WRITE_BLUE
;
102 if (rt
->colormask
& PIPE_MASK_A
)
103 so
->rb_colormask
|= A2XX_RB_COLOR_MASK_WRITE_ALPHA
;
105 if (!rt
->blend_enable
)
106 so
->rb_colorcontrol
|= A2XX_RB_COLORCONTROL_BLEND_DISABLE
;
109 so
->rb_colorcontrol
|= A2XX_RB_COLORCONTROL_DITHER_MODE(DITHER_ALWAYS
);