src/gallium/drivers/etnaviv/etnaviv_uniforms.c

   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
  36 static unsigned
  37 get_const_idx(const struct etna_context *ctx, bool frag, unsigned samp_id)
  38 {
  39    if (frag)
  40       return samp_id;
  41
  42    return samp_id + ctx->specs.vertex_sampler_offset;
  43 }
  44
  45 static uint32_t
  46 get_texrect_scale(const struct etna_context *ctx, bool frag,
  47                   enum etna_immediate_contents contents, uint32_t data)
  48 {
  49    unsigned index = get_const_idx(ctx, frag, data);
  50    struct pipe_sampler_view *texture = ctx->sampler_view[index];
  51    uint32_t dim;
  52
  53    if (contents == ETNA_IMMEDIATE_TEXRECT_SCALE_X)
  54       dim = texture->texture->width0;
  55    else
  56       dim = texture->texture->height0;
  57
  58    return fui(1.0f / dim);
  59 }
  60
  61 void
  62 etna_uniforms_write(const struct etna_context *ctx,
  63                     const struct etna_shader_variant *sobj,
  64                     struct pipe_constant_buffer *cb)
  65 {
  66    struct etna_cmd_stream *stream = ctx->stream;
  67    const struct etna_shader_uniform_info *uinfo = &sobj->uniforms;
  68    bool frag = (sobj == ctx->shader.fs);
  69    uint32_t base = frag ? ctx->specs.ps_uniforms_offset : ctx->specs.vs_uniforms_offset;
  70
  71    if (!uinfo->imm_count)
  72       return;
  73
  74    etna_cmd_stream_reserve(stream, align(uinfo->imm_count + 1, 2));
  75    etna_emit_load_state(stream, base >> 2, uinfo->imm_count, 0);
  76
  77    for (uint32_t i = 0; i < uinfo->imm_count; i++) {
  78       uint32_t val = uinfo->imm_data[i];
  79
  80       switch (uinfo->imm_contents[i]) {
  81       case ETNA_IMMEDIATE_CONSTANT:
  82          etna_cmd_stream_emit(stream, val);
  83          break;
  84
  85       case ETNA_IMMEDIATE_UNIFORM:
  86          assert(cb->user_buffer && val * 4 < cb->buffer_size);
  87          etna_cmd_stream_emit(stream, ((uint32_t*) cb->user_buffer)[val]);
  88          break;
  89
  90       case ETNA_IMMEDIATE_TEXRECT_SCALE_X:
  91       case ETNA_IMMEDIATE_TEXRECT_SCALE_Y:
  92          etna_cmd_stream_emit(stream,
  93             get_texrect_scale(ctx, frag, uinfo->imm_contents[i], val));
  94          break;
  95
  96       case ETNA_IMMEDIATE_UBO0_ADDR ... ETNA_IMMEDIATE_UBOMAX_ADDR:
  97          assert(uinfo->imm_contents[i] == ETNA_IMMEDIATE_UBO0_ADDR);
  98          etna_cmd_stream_reloc(stream, &(struct etna_reloc) {
  99             .bo = etna_resource(cb->buffer)->bo,
 100             .flags = ETNA_RELOC_READ,
 101             .offset = cb->buffer_offset + val,
 102          });
 103          break;
 104
 105       case ETNA_IMMEDIATE_UNUSED:
 106          etna_cmd_stream_emit(stream, 0);
 107          break;
 108       }
 109    }
 110
 111    if ((uinfo->imm_count % 2) == 0)
 112       etna_cmd_stream_emit(stream, 0);
 113 }
 114
 115 void
 116 etna_set_shader_uniforms_dirty_flags(struct etna_shader_variant *sobj)
 117 {
 118    uint32_t dirty = 0;
 119
 120    for (uint32_t i = 0; i < sobj->uniforms.imm_count; i++) {
 121       switch (sobj->uniforms.imm_contents[i]) {
 122       default:
 123          break;
 124
 125       case ETNA_IMMEDIATE_TEXRECT_SCALE_X:
 126       case ETNA_IMMEDIATE_TEXRECT_SCALE_Y:
 127          dirty |= ETNA_DIRTY_SAMPLER_VIEWS;
 128          break;
 129       }
 130    }
 131
 132    sobj->uniforms_dirty_bits = dirty;
 133 }