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 /**
38 * Since the sample-mask is part of the hw blend state, we need to have state
39 * variants per sample-mask value. But we don't expect the sample-mask state
40 * to change frequently.
41 */
42 struct fd6_blend_variant {
43 unsigned sample_mask;
44 struct fd_ringbuffer *stateobj;
45 };
46
47 struct fd6_blend_stateobj {
48 struct pipe_blend_state base;
49
50 bool use_dual_src_blend;
51
52 struct fd_context *ctx;
53 bool reads_dest;
54 struct util_dynarray variants;
55 };
56
57 static inline struct fd6_blend_stateobj *
fd6_blend_stateobj(struct pipe_blend_state * blend)58 fd6_blend_stateobj(struct pipe_blend_state *blend)
59 {
60 return (struct fd6_blend_stateobj *)blend;
61 }
62
63 struct fd6_blend_variant *
64 __fd6_setup_blend_variant(struct fd6_blend_stateobj *blend,
65 unsigned sample_mask);
66
67 static inline struct fd6_blend_variant *
fd6_blend_variant(struct pipe_blend_state * cso,unsigned nr_samples,unsigned sample_mask)68 fd6_blend_variant(struct pipe_blend_state *cso, unsigned nr_samples,
69 unsigned sample_mask)
70 {
71 struct fd6_blend_stateobj *blend = fd6_blend_stateobj(cso);
72 unsigned mask = BITFIELD_MASK(nr_samples);
73
74 util_dynarray_foreach (&blend->variants, struct fd6_blend_variant *, vp) {
75 struct fd6_blend_variant *v = *vp;
76
77 /* mask out sample-mask bits that we don't care about to avoid
78 * creating unnecessary variants
79 */
80 if ((mask & v->sample_mask) == (mask & sample_mask)) {
81 return v;
82 }
83 }
84
85 return __fd6_setup_blend_variant(blend, sample_mask);
86 }
87
88 void *fd6_blend_state_create(struct pipe_context *pctx,
89 const struct pipe_blend_state *cso);
90 void fd6_blend_state_delete(struct pipe_context *, void *hwcso);
91
92 #endif /* FD6_BLEND_H_ */
93