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      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 (at) 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_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
    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