1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
4 * Copyright (C) 2012-2013 Rob Clark <robclark@freedesktop.org>
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
26 * Rob Clark <robclark@freedesktop.org>
29 #include "pipe/p_state.h"
30 #include "util/u_string.h"
31 #include "util/u_memory.h"
33 #include "fd2_blend.h"
34 #include "fd2_context.h"
38 static enum a2xx_rb_blend_opcode
39 blend_func(unsigned func
)
43 return BLEND2_DST_PLUS_SRC
;
45 return BLEND2_MIN_DST_SRC
;
47 return BLEND2_MAX_DST_SRC
;
48 case PIPE_BLEND_SUBTRACT
:
49 return BLEND2_SRC_MINUS_DST
;
50 case PIPE_BLEND_REVERSE_SUBTRACT
:
51 return BLEND2_DST_MINUS_SRC
;
53 DBG("invalid blend func: %x", func
);
59 fd2_blend_state_create(struct pipe_context
*pctx
,
60 const struct pipe_blend_state
*cso
)
62 const struct pipe_rt_blend_state
*rt
= &cso
->rt
[0];
63 struct fd2_blend_stateobj
*so
;
65 if (cso
->logicop_enable
) {
66 DBG("Unsupported! logicop");
70 if (cso
->independent_blend_enable
) {
71 DBG("Unsupported! independent blend state");
75 so
= CALLOC_STRUCT(fd2_blend_stateobj
);
81 so
->rb_colorcontrol
= A2XX_RB_COLORCONTROL_ROP_CODE(12);
84 A2XX_RB_BLEND_CONTROL_COLOR_SRCBLEND(fd_blend_factor(rt
->rgb_src_factor
)) |
85 A2XX_RB_BLEND_CONTROL_COLOR_COMB_FCN(blend_func(rt
->rgb_func
)) |
86 A2XX_RB_BLEND_CONTROL_COLOR_DESTBLEND(fd_blend_factor(rt
->rgb_dst_factor
)) |
87 A2XX_RB_BLEND_CONTROL_ALPHA_SRCBLEND(fd_blend_factor(rt
->alpha_src_factor
)) |
88 A2XX_RB_BLEND_CONTROL_ALPHA_COMB_FCN(blend_func(rt
->alpha_func
)) |
89 A2XX_RB_BLEND_CONTROL_ALPHA_DESTBLEND(fd_blend_factor(rt
->alpha_dst_factor
));
91 if (rt
->colormask
& PIPE_MASK_R
)
92 so
->rb_colormask
|= A2XX_RB_COLOR_MASK_WRITE_RED
;
93 if (rt
->colormask
& PIPE_MASK_G
)
94 so
->rb_colormask
|= A2XX_RB_COLOR_MASK_WRITE_GREEN
;
95 if (rt
->colormask
& PIPE_MASK_B
)
96 so
->rb_colormask
|= A2XX_RB_COLOR_MASK_WRITE_BLUE
;
97 if (rt
->colormask
& PIPE_MASK_A
)
98 so
->rb_colormask
|= A2XX_RB_COLOR_MASK_WRITE_ALPHA
;
100 if (!rt
->blend_enable
)
101 so
->rb_colorcontrol
|= A2XX_RB_COLORCONTROL_BLEND_DISABLE
;
104 so
->rb_colorcontrol
|= A2XX_RB_COLORCONTROL_DITHER_MODE(DITHER_ALWAYS
);