src/gallium/drivers/lima/lima_texture.c

   1 /*
   2  * Copyright (c) 2011-2013 Luc Verhaegen <libv@skynet.be>
   3  * Copyright (c) 2018-2019 Lima Project
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the
  13  * next paragraph) shall be included in all copies or substantial portions
  14  * of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  */
  25
  26 #include "util/u_memory.h"
  27 #include "util/u_upload_mgr.h"
  28 #include "util/u_math.h"
  29 #include "util/u_debug.h"
  30 #include "util/u_transfer.h"
  31
  32 #include "lima_bo.h"
  33 #include "lima_context.h"
  34 #include "lima_screen.h"
  35 #include "lima_texture.h"
  36 #include "lima_resource.h"
  37 #include "lima_submit.h"
  38 #include "lima_util.h"
  39 #include "lima_format.h"
  40
  41 #include <drm-uapi/lima_drm.h>
  42
  43
  44 #define lima_tex_list_size 64
  45
  46 static_assert(offsetof(lima_tex_desc, va) == 24, "lima_tex_desc->va offset isn't 24");
  47
  48
  49 static void
  50 lima_texture_desc_set_va(lima_tex_desc *desc,
  51                          int idx,
  52                          uint32_t va)
  53 {
  54    unsigned va_bit_idx = VA_BIT_OFFSET + (VA_BIT_SIZE * idx);
  55    unsigned va_idx = va_bit_idx / 32;
  56    va_bit_idx %= 32;
  57
  58    va >>= 6;
  59
  60    desc->va[va_idx] |= va << va_bit_idx;
  61    if (va_bit_idx <= 6)
  62       return;
  63    desc->va[va_idx + 1] |= va >> (32 - va_bit_idx);
  64 }
  65
  66 void
  67 lima_texture_desc_set_res(struct lima_context *ctx, lima_tex_desc *desc,
  68                           struct pipe_resource *prsc,
  69                           unsigned first_level, unsigned last_level)
  70 {
  71    unsigned width, height, layout, i;
  72    struct lima_resource *lima_res = lima_resource(prsc);
  73
  74    width = prsc->width0;
  75    height = prsc->height0;
  76    if (first_level != 0) {
  77       width = u_minify(width, first_level);
  78       height = u_minify(height, first_level);
  79    }
  80
  81    desc->format = lima_format_get_texel(prsc->format);
  82    desc->swap_r_b = lima_format_get_swap_rb(prsc->format);
  83    desc->width  = width;
  84    desc->height = height;
  85    desc->unknown_3_1 = 1;
  86
  87    if (lima_res->tiled)
  88       layout = 3;
  89    else {
  90       /* for padded linear texture */
  91       if (lima_res->levels[first_level].width != width) {
  92          desc->stride = lima_res->levels[first_level].stride;
  93          desc->has_stride = 1;
  94       }
  95       layout = 0;
  96    }
  97
  98    lima_submit_add_bo(ctx->pp_submit, lima_res->bo, LIMA_SUBMIT_BO_READ);
  99
 100    uint32_t base_va = lima_res->bo->va;
 101
 102    /* attach first level */
 103    uint32_t first_va = base_va + lima_res->levels[first_level].offset;
 104    desc->va_s.va_0 = first_va >> 6;
 105    desc->va_s.layout = layout;
 106
 107    /* Attach remaining levels.
 108     * Each subsequent mipmap address is specified using the 26 msbs.
 109     * These addresses are then packed continuously in memory */
 110    for (i = 1; i <= (last_level - first_level); i++) {
 111       uint32_t address = base_va + lima_res->levels[first_level + i].offset;
 112       lima_texture_desc_set_va(desc, i, address);
 113    }
 114 }
 115
 116 static void
 117 lima_update_tex_desc(struct lima_context *ctx, struct lima_sampler_state *sampler,
 118                      struct lima_sampler_view *texture, void *pdesc,
 119                      unsigned desc_size)
 120 {
 121    /* unit is 1/16 since lod_bias is in fixed format */
 122    int lod_bias_delta = 0;
 123    lima_tex_desc *desc = pdesc;
 124    unsigned first_level;
 125    unsigned last_level;
 126    float max_lod;
 127
 128    memset(desc, 0, desc_size);
 129
 130    switch (texture->base.target) {
 131    case PIPE_TEXTURE_2D:
 132    case PIPE_TEXTURE_RECT:
 133       desc->texture_type = LIMA_TEXTURE_TYPE_2D;
 134       break;
 135    case PIPE_TEXTURE_CUBE:
 136       desc->texture_type = LIMA_TEXTURE_TYPE_CUBE;
 137       break;
 138    default:
 139       break;
 140    }
 141
 142    if (!sampler->base.normalized_coords)
 143       desc->unnorm_coords = 1;
 144
 145    first_level = texture->base.u.tex.first_level;
 146    last_level = texture->base.u.tex.last_level;
 147    if (last_level - first_level >= LIMA_MAX_MIP_LEVELS)
 148       last_level = first_level + LIMA_MAX_MIP_LEVELS - 1;
 149
 150    desc->min_lod = lima_float_to_fixed8(sampler->base.min_lod);
 151    max_lod = MIN2(sampler->base.max_lod, sampler->base.min_lod +
 152                                          (last_level - first_level));
 153    desc->max_lod = lima_float_to_fixed8(max_lod);
 154    desc->lod_bias = lima_float_to_fixed8(sampler->base.lod_bias);
 155
 156    switch (sampler->base.min_mip_filter) {
 157       case PIPE_TEX_MIPFILTER_LINEAR:
 158          desc->min_mipfilter_2 = 3;
 159          break;
 160       case PIPE_TEX_MIPFILTER_NEAREST:
 161          desc->min_mipfilter_2 = 0;
 162          break;
 163       case PIPE_TEX_MIPFILTER_NONE:
 164          desc->max_lod = desc->min_lod;
 165          break;
 166       default:
 167          break;
 168    }
 169
 170    switch (sampler->base.mag_img_filter) {
 171    case PIPE_TEX_FILTER_LINEAR:
 172       desc->mag_img_filter_nearest = 0;
 173       break;
 174    case PIPE_TEX_FILTER_NEAREST:
 175    default:
 176       desc->mag_img_filter_nearest = 1;
 177       break;
 178    }
 179
 180    switch (sampler->base.min_img_filter) {
 181       break;
 182    case PIPE_TEX_FILTER_LINEAR:
 183       desc->min_img_filter_nearest = 0;
 184       break;
 185    case PIPE_TEX_FILTER_NEAREST:
 186    default:
 187       lod_bias_delta = 8;
 188       desc->min_img_filter_nearest = 1;
 189       break;
 190    }
 191
 192    /* Only clamp, clamp to edge, repeat and mirror repeat are supported */
 193    switch (sampler->base.wrap_s) {
 194    case PIPE_TEX_WRAP_CLAMP:
 195       desc->wrap_s_clamp = 1;
 196       break;
 197    case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
 198    case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
 199       desc->wrap_s_clamp_to_edge = 1;
 200       break;
 201    case PIPE_TEX_WRAP_MIRROR_REPEAT:
 202       desc->wrap_s_mirror_repeat = 1;
 203       break;
 204    case PIPE_TEX_WRAP_REPEAT:
 205    default:
 206       break;
 207    }
 208
 209    /* Only clamp, clamp to edge, repeat and mirror repeat are supported */
 210    switch (sampler->base.wrap_t) {
 211    case PIPE_TEX_WRAP_CLAMP:
 212       desc->wrap_t_clamp = 1;
 213       break;
 214    case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
 215    case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
 216       desc->wrap_t_clamp_to_edge = 1;
 217       break;
 218    case PIPE_TEX_WRAP_MIRROR_REPEAT:
 219       desc->wrap_t_mirror_repeat = 1;
 220       break;
 221    case PIPE_TEX_WRAP_REPEAT:
 222    default:
 223       break;
 224    }
 225
 226    if (desc->min_img_filter_nearest && desc->mag_img_filter_nearest &&
 227        desc->min_mipfilter_2 == 0 &&
 228        (desc->min_lod != desc->max_lod))
 229      lod_bias_delta = -1;
 230
 231    desc->lod_bias += lod_bias_delta;
 232
 233    lima_texture_desc_set_res(ctx, desc, texture->base.texture,
 234                              first_level, last_level);
 235 }
 236
 237 static unsigned
 238 lima_calc_tex_desc_size(struct lima_sampler_view *texture)
 239 {
 240    unsigned size = offsetof(lima_tex_desc, va);
 241    unsigned va_bit_size;
 242    unsigned first_level = texture->base.u.tex.first_level;
 243    unsigned last_level = texture->base.u.tex.last_level;
 244
 245    if (last_level - first_level >= LIMA_MAX_MIP_LEVELS)
 246       last_level = first_level + LIMA_MAX_MIP_LEVELS - 1;
 247
 248    va_bit_size = VA_BIT_OFFSET + VA_BIT_SIZE * (last_level - first_level + 1);
 249    size += (va_bit_size + 7) >> 3;
 250    size = align(size, lima_min_tex_desc_size);
 251
 252    return size;
 253 }
 254
 255 void
 256 lima_update_textures(struct lima_context *ctx)
 257 {
 258    struct lima_texture_stateobj *lima_tex = &ctx->tex_stateobj;
 259
 260    assert (lima_tex->num_samplers <= 16);
 261
 262    /* Nothing to do - we have no samplers or textures */
 263    if (!lima_tex->num_samplers || !lima_tex->num_textures)
 264       return;
 265
 266    unsigned size = lima_tex_list_size;
 267    for (int i = 0; i < lima_tex->num_samplers; i++) {
 268       struct lima_sampler_view *texture = lima_sampler_view(lima_tex->textures[i]);
 269       size += lima_calc_tex_desc_size(texture);
 270    }
 271
 272    uint32_t *descs =
 273       lima_ctx_buff_alloc(ctx, lima_ctx_buff_pp_tex_desc, size);
 274
 275    off_t offset = lima_tex_list_size;
 276    for (int i = 0; i < lima_tex->num_samplers; i++) {
 277       struct lima_sampler_state *sampler = lima_sampler_state(lima_tex->samplers[i]);
 278       struct lima_sampler_view *texture = lima_sampler_view(lima_tex->textures[i]);
 279       unsigned desc_size = lima_calc_tex_desc_size(texture);
 280
 281       descs[i] = lima_ctx_buff_va(ctx, lima_ctx_buff_pp_tex_desc,
 282                                   LIMA_CTX_BUFF_SUBMIT_PP) + offset;
 283       lima_update_tex_desc(ctx, sampler, texture, (void *)descs + offset, desc_size);
 284       offset += desc_size;
 285    }
 286
 287    lima_dump_command_stream_print(
 288       descs, size, false, "add textures_desc at va %x\n",
 289       lima_ctx_buff_va(ctx, lima_ctx_buff_pp_tex_desc, 0));
 290
 291    lima_dump_texture_descriptor(
 292       descs, size,
 293       lima_ctx_buff_va(ctx, lima_ctx_buff_pp_tex_desc, 0) + lima_tex_list_size,
 294       lima_tex_list_size);
 295 }