1 /*
2 * Copyright (C) 2016 Rob Clark <robclark@freedesktop.org>
3 * Copyright © 2018 Google, Inc.
4 *
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:
11 *
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
14 * Software.
15 *
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
22 * SOFTWARE.
23 *
24 * Authors:
25 * Rob Clark <robclark@freedesktop.org>
26 */
27
28 #ifndef FD6_BLEND_H_
29 #define FD6_BLEND_H_
30
31 #include "pipe/p_context.h"
32 #include "pipe/p_state.h"
33
34 #include "freedreno_context.h"
35 #include "freedreno_util.h"
36
37 BEGINC;
38
39 /**
40 * Since the sample-mask is part of the hw blend state, we need to have state
41 * variants per sample-mask value. But we don't expect the sample-mask state
42 * to change frequently.
43 */
44 struct fd6_blend_variant {
45 unsigned sample_mask;
46 struct fd_ringbuffer *stateobj;
47 };
48
49 struct fd6_blend_stateobj {
50 struct pipe_blend_state base;
51
52 bool use_dual_src_blend;
53
54 struct fd_context *ctx;
55 bool reads_dest;
56 uint32_t all_mrt_write_mask;
57 struct util_dynarray variants;
58 };
59
60 static inline struct fd6_blend_stateobj *
fd6_blend_stateobj(struct pipe_blend_state * blend)61 fd6_blend_stateobj(struct pipe_blend_state *blend)
62 {
63 return (struct fd6_blend_stateobj *)blend;
64 }
65
66 struct fd6_blend_variant *
67 __fd6_setup_blend_variant(struct fd6_blend_stateobj *blend,
68 unsigned sample_mask);
69
70 static inline struct fd6_blend_variant *
fd6_blend_variant(struct pipe_blend_state * cso,unsigned nr_samples,unsigned sample_mask)71 fd6_blend_variant(struct pipe_blend_state *cso, unsigned nr_samples,
72 unsigned sample_mask)
73 {
74 struct fd6_blend_stateobj *blend = fd6_blend_stateobj(cso);
75 unsigned mask = BITFIELD_MASK(nr_samples);
76
77 util_dynarray_foreach (&blend->variants, struct fd6_blend_variant *, vp) {
78 struct fd6_blend_variant *v = *vp;
79
80 /* mask out sample-mask bits that we don't care about to avoid
81 * creating unnecessary variants
82 */
83 if ((mask & v->sample_mask) == (mask & sample_mask)) {
84 return v;
85 }
86 }
87
88 return __fd6_setup_blend_variant(blend, sample_mask);
89 }
90
91 void *fd6_blend_state_create(struct pipe_context *pctx,
92 const struct pipe_blend_state *cso);
93 void fd6_blend_state_delete(struct pipe_context *, void *hwcso);
94
95 ENDC;
96
97 #endif /* FD6_BLEND_H_ */
98