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 "pipe/p_defines.h"
  33 #include "util/u_math.h"
  34
  35 static unsigned
  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
  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
  61 etna_uniforms_write(const struct etna_context *ctx,
  62                     const struct etna_shader *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->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
 100 etna_set_shader_uniforms_dirty_flags(struct etna_shader *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 }