1/*
2 * Copyright (c) 2016 Etnaviv Project
3 *
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, sub license,
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:
10 *
11 * The above copyright notice and this permission notice (including the
12 * next paragraph) shall be included in all copies or substantial portions
13 * of the Software.
14 *
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 NON-INFRINGEMENT. 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
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 *    Christian Gmeiner <christian.gmeiner@gmail.com>
25 */
26
27#include "etnaviv_uniforms.h"
28
29#include "etnaviv_compiler.h"
30#include "etnaviv_context.h"
31#include "etnaviv_util.h"
32#include "etnaviv_emit.h"
33#include "pipe/p_defines.h"
34#include "util/u_math.h"
35
36static unsigned
37get_const_idx(const struct etna_context *ctx, bool frag, unsigned samp_id)
38{
39   struct etna_screen *screen = ctx->screen;
40
41   if (frag)
42      return samp_id;
43
44   return samp_id + screen->specs.vertex_sampler_offset;
45}
46
47static uint32_t
48get_texrect_scale(const struct etna_context *ctx, bool frag,
49                  enum etna_uniform_contents contents, uint32_t data)
50{
51   unsigned index = get_const_idx(ctx, frag, data);
52   struct pipe_sampler_view *texture = ctx->sampler_view[index];
53   uint32_t dim;
54
55   if (contents == ETNA_UNIFORM_TEXRECT_SCALE_X)
56      dim = texture->texture->width0;
57   else
58      dim = texture->texture->height0;
59
60   return fui(1.0f / dim);
61}
62
63void
64etna_uniforms_write(const struct etna_context *ctx,
65                    const struct etna_shader_variant *sobj,
66                    struct pipe_constant_buffer *cb)
67{
68   struct etna_screen *screen = ctx->screen;
69   struct etna_cmd_stream *stream = ctx->stream;
70   const struct etna_shader_uniform_info *uinfo = &sobj->uniforms;
71   bool frag = (sobj == ctx->shader.fs);
72   uint32_t base = frag ? screen->specs.ps_uniforms_offset : screen->specs.vs_uniforms_offset;
73   unsigned idx;
74
75   if (!uinfo->count)
76      return;
77
78   etna_cmd_stream_reserve(stream, align(uinfo->count + 1, 2));
79   etna_emit_load_state(stream, base >> 2, uinfo->count, 0);
80
81   for (uint32_t i = 0; i < uinfo->count; i++) {
82      uint32_t val = uinfo->data[i];
83
84      switch (uinfo->contents[i]) {
85      case ETNA_UNIFORM_CONSTANT:
86         etna_cmd_stream_emit(stream, val);
87         break;
88
89      case ETNA_UNIFORM_UNIFORM:
90         assert(cb->user_buffer && val * 4 < cb->buffer_size);
91         etna_cmd_stream_emit(stream, ((uint32_t*) cb->user_buffer)[val]);
92         break;
93
94      case ETNA_UNIFORM_TEXRECT_SCALE_X:
95      case ETNA_UNIFORM_TEXRECT_SCALE_Y:
96         etna_cmd_stream_emit(stream,
97            get_texrect_scale(ctx, frag, uinfo->contents[i], val));
98         break;
99
100      case ETNA_UNIFORM_UBO0_ADDR ... ETNA_UNIFORM_UBOMAX_ADDR:
101         idx = uinfo->contents[i] - ETNA_UNIFORM_UBO0_ADDR;
102         etna_cmd_stream_reloc(stream, &(struct etna_reloc) {
103            .bo = etna_resource(cb[idx].buffer)->bo,
104            .flags = ETNA_RELOC_READ,
105            .offset = cb[idx].buffer_offset + val,
106         });
107         break;
108
109      case ETNA_UNIFORM_UNUSED:
110         etna_cmd_stream_emit(stream, 0);
111         break;
112      }
113   }
114
115   if ((uinfo->count % 2) == 0)
116      etna_cmd_stream_emit(stream, 0);
117}
118
119void
120etna_set_shader_uniforms_dirty_flags(struct etna_shader_variant *sobj)
121{
122   uint32_t dirty = 0;
123
124   for (uint32_t i = 0; i < sobj->uniforms.count; i++) {
125      switch (sobj->uniforms.contents[i]) {
126      default:
127         break;
128
129      case ETNA_UNIFORM_TEXRECT_SCALE_X:
130      case ETNA_UNIFORM_TEXRECT_SCALE_Y:
131         dirty |= ETNA_DIRTY_SAMPLER_VIEWS;
132         break;
133      }
134   }
135
136   sobj->uniforms_dirty_bits = dirty;
137}
138