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 #define FD_BO_NO_HARDPIN 1
29
30 #include "pipe/p_state.h"
31 #include "util/u_blend.h"
32 #include "util/u_dual_blend.h"
33 #include "util/u_memory.h"
34 #include "util/u_string.h"
35
36 #include "fd6_blend.h"
37 #include "fd6_context.h"
38 #include "fd6_pack.h"
39
40 // XXX move somewhere common.. same across a3xx/a4xx/a5xx..
41 static enum a3xx_rb_blend_opcode
blend_func(unsigned func)42 blend_func(unsigned func)
43 {
44 switch (func) {
45 case PIPE_BLEND_ADD:
46 return BLEND_DST_PLUS_SRC;
47 case PIPE_BLEND_MIN:
48 return BLEND_MIN_DST_SRC;
49 case PIPE_BLEND_MAX:
50 return BLEND_MAX_DST_SRC;
51 case PIPE_BLEND_SUBTRACT:
52 return BLEND_SRC_MINUS_DST;
53 case PIPE_BLEND_REVERSE_SUBTRACT:
54 return BLEND_DST_MINUS_SRC;
55 default:
56 DBG("invalid blend func: %x", func);
57 return (enum a3xx_rb_blend_opcode)0;
58 }
59 }
60
61 struct fd6_blend_variant *
__fd6_setup_blend_variant(struct fd6_blend_stateobj * blend,unsigned sample_mask)62 __fd6_setup_blend_variant(struct fd6_blend_stateobj *blend,
63 unsigned sample_mask)
64 {
65 const struct pipe_blend_state *cso = &blend->base;
66 struct fd6_blend_variant *so;
67 enum a3xx_rop_code rop = ROP_COPY;
68 bool reads_dest = false;
69 unsigned mrt_blend = 0;
70
71 if (cso->logicop_enable) {
72 rop = (enum a3xx_rop_code)cso->logicop_func; /* maps 1:1 */
73 reads_dest = util_logicop_reads_dest((enum pipe_logicop)cso->logicop_func);
74 }
75
76 so = (struct fd6_blend_variant *)rzalloc_size(blend, sizeof(*so));
77 if (!so)
78 return NULL;
79
80 struct fd_ringbuffer *ring = fd_ringbuffer_new_object(
81 blend->ctx->pipe, ((A6XX_MAX_RENDER_TARGETS * 4) + 6) * 4);
82 so->stateobj = ring;
83
84 for (unsigned i = 0; i <= cso->max_rt; i++) {
85 const struct pipe_rt_blend_state *rt;
86
87 if (cso->independent_blend_enable)
88 rt = &cso->rt[i];
89 else
90 rt = &cso->rt[0];
91
92 OUT_REG(ring,
93 A6XX_RB_MRT_BLEND_CONTROL(
94 i, .rgb_src_factor = fd_blend_factor(rt->rgb_src_factor),
95 .rgb_blend_opcode = blend_func(rt->rgb_func),
96 .rgb_dest_factor = fd_blend_factor(rt->rgb_dst_factor),
97 .alpha_src_factor = fd_blend_factor(rt->alpha_src_factor),
98 .alpha_blend_opcode = blend_func(rt->alpha_func),
99 .alpha_dest_factor = fd_blend_factor(rt->alpha_dst_factor), ));
100
101 OUT_REG(ring,
102 A6XX_RB_MRT_CONTROL(
103 i,
104 .blend = rt->blend_enable,
105 .blend2 = rt->blend_enable,
106 .rop_enable = cso->logicop_enable,
107 .rop_code = rop,
108 .component_enable = rt->colormask,
109 )
110 );
111
112 if (rt->blend_enable) {
113 mrt_blend |= (1 << i);
114 }
115
116 if (reads_dest) {
117 mrt_blend |= (1 << i);
118 }
119 }
120
121 OUT_REG(
122 ring,
123 A6XX_RB_DITHER_CNTL(
124 .dither_mode_mrt0 = cso->dither ? DITHER_ALWAYS : DITHER_DISABLE,
125 .dither_mode_mrt1 = cso->dither ? DITHER_ALWAYS : DITHER_DISABLE,
126 .dither_mode_mrt2 = cso->dither ? DITHER_ALWAYS : DITHER_DISABLE,
127 .dither_mode_mrt3 = cso->dither ? DITHER_ALWAYS : DITHER_DISABLE,
128 .dither_mode_mrt4 = cso->dither ? DITHER_ALWAYS : DITHER_DISABLE,
129 .dither_mode_mrt5 = cso->dither ? DITHER_ALWAYS : DITHER_DISABLE,
130 .dither_mode_mrt6 = cso->dither ? DITHER_ALWAYS : DITHER_DISABLE,
131 .dither_mode_mrt7 =
132 cso->dither ? DITHER_ALWAYS : DITHER_DISABLE, ));
133
134 OUT_REG(ring,
135 A6XX_SP_BLEND_CNTL(
136 .enable_blend = mrt_blend,
137 .unk8 = true,
138 .dual_color_in_enable = blend->use_dual_src_blend,
139 .alpha_to_coverage = cso->alpha_to_coverage,
140 ),
141 );
142
143 OUT_REG(ring,
144 A6XX_RB_BLEND_CNTL(
145 .enable_blend = mrt_blend,
146 .independent_blend = cso->independent_blend_enable,
147 .dual_color_in_enable = blend->use_dual_src_blend,
148 .alpha_to_coverage = cso->alpha_to_coverage,
149 .alpha_to_one = cso->alpha_to_one,
150 .sample_mask = sample_mask,
151 ),
152 );
153
154 so->sample_mask = sample_mask;
155
156 util_dynarray_append(&blend->variants, struct fd6_blend_variant *, so);
157
158 return so;
159 }
160
161 void *
fd6_blend_state_create(struct pipe_context * pctx,const struct pipe_blend_state * cso)162 fd6_blend_state_create(struct pipe_context *pctx,
163 const struct pipe_blend_state *cso)
164 {
165 struct fd6_blend_stateobj *so;
166
167 so = (struct fd6_blend_stateobj *)rzalloc_size(NULL, sizeof(*so));
168 if (!so)
169 return NULL;
170
171 so->base = *cso;
172 so->ctx = fd_context(pctx);
173
174 if (cso->logicop_enable) {
175 so->reads_dest |= util_logicop_reads_dest((enum pipe_logicop)cso->logicop_func);
176 }
177
178 so->use_dual_src_blend =
179 cso->rt[0].blend_enable && util_blend_state_is_dual(cso, 0);
180
181 STATIC_ASSERT((4 * PIPE_MAX_COLOR_BUFS) == (8 * sizeof(so->all_mrt_write_mask)));
182 so->all_mrt_write_mask = 0;
183
184 for (unsigned i = 0; i <= cso->max_rt; i++) {
185 const struct pipe_rt_blend_state *rt =
186 &cso->rt[cso->independent_blend_enable ? i : 0];
187
188 so->reads_dest |= rt->blend_enable;
189
190 so->all_mrt_write_mask |= rt->colormask << (4 * i);
191 }
192
193 util_dynarray_init(&so->variants, so);
194
195 return so;
196 }
197
198 void
fd6_blend_state_delete(struct pipe_context * pctx,void * hwcso)199 fd6_blend_state_delete(struct pipe_context *pctx, void *hwcso)
200 {
201 struct fd6_blend_stateobj *so = (struct fd6_blend_stateobj *)hwcso;
202
203 util_dynarray_foreach (&so->variants, struct fd6_blend_variant *, vp) {
204 struct fd6_blend_variant *v = *vp;
205 fd_ringbuffer_del(v->stateobj);
206 }
207
208 ralloc_free(so);
209 }
210