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 "pipe/p_defines.h"
33 #include "util/u_math.h"
34
35 static unsigned
get_const_idx(const struct etna_context * ctx,bool frag,unsigned samp_id)36 get_const_idx(const struct etna_context *ctx, bool frag, unsigned samp_id)
37 {
38 if (frag)
39 return samp_id;
40
41 return samp_id + ctx->specs.vertex_sampler_offset;
42 }
43
44 static uint32_t
get_texrect_scale(const struct etna_context * ctx,bool frag,enum etna_immediate_contents contents,uint32_t data)45 get_texrect_scale(const struct etna_context *ctx, bool frag,
46 enum etna_immediate_contents contents, uint32_t data)
47 {
48 unsigned index = get_const_idx(ctx, frag, data);
49 struct pipe_sampler_view *texture = ctx->sampler_view[index];
50 uint32_t dim;
51
52 if (contents == ETNA_IMMEDIATE_TEXRECT_SCALE_X)
53 dim = texture->texture->width0;
54 else
55 dim = texture->texture->height0;
56
57 return fui(1.0f / dim);
58 }
59
60 void
etna_uniforms_write(const struct etna_context * ctx,const struct etna_shader_variant * sobj,struct pipe_constant_buffer * cb,uint32_t * uniforms,unsigned * size)61 etna_uniforms_write(const struct etna_context *ctx,
62 const struct etna_shader_variant *sobj,
63 struct pipe_constant_buffer *cb, uint32_t *uniforms,
64 unsigned *size)
65 {
66 const struct etna_shader_uniform_info *uinfo = &sobj->uniforms;
67 bool frag = false;
68
69 if (cb->user_buffer) {
70 unsigned size = MIN2(cb->buffer_size, uinfo->const_count * 4);
71
72 memcpy(uniforms, cb->user_buffer, size);
73 }
74
75 if (sobj == ctx->shader.fs)
76 frag = true;
77
78 for (uint32_t i = 0; i < uinfo->imm_count; i++) {
79 switch (uinfo->imm_contents[i]) {
80 case ETNA_IMMEDIATE_CONSTANT:
81 uniforms[i + uinfo->const_count] = uinfo->imm_data[i];
82 break;
83
84 case ETNA_IMMEDIATE_TEXRECT_SCALE_X:
85 case ETNA_IMMEDIATE_TEXRECT_SCALE_Y:
86 uniforms[i + uinfo->const_count] =
87 get_texrect_scale(ctx, frag, uinfo->imm_contents[i], uinfo->imm_data[i]);
88 break;
89
90 case ETNA_IMMEDIATE_UNUSED:
91 /* nothing to do */
92 break;
93 }
94 }
95
96 *size = uinfo->const_count + uinfo->imm_count;
97 }
98
99 void
etna_set_shader_uniforms_dirty_flags(struct etna_shader_variant * sobj)100 etna_set_shader_uniforms_dirty_flags(struct etna_shader_variant *sobj)
101 {
102 uint32_t dirty = 0;
103
104 for (uint32_t i = 0; i < sobj->uniforms.imm_count; i++) {
105 switch (sobj->uniforms.imm_contents[i]) {
106 case ETNA_IMMEDIATE_UNUSED:
107 case ETNA_IMMEDIATE_CONSTANT:
108 break;
109
110 case ETNA_IMMEDIATE_TEXRECT_SCALE_X:
111 case ETNA_IMMEDIATE_TEXRECT_SCALE_Y:
112 dirty |= ETNA_DIRTY_SAMPLER_VIEWS;
113 break;
114 }
115 }
116
117 sobj->uniforms_dirty_bits = dirty;
118 }
119