src/gallium/drivers/freedreno/a3xx/fd3_texture.c

   1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
   2
   3 /*
   4  * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  *
  25  * Authors:
  26  *    Rob Clark <robclark@freedesktop.org>
  27  */
  28
  29 #include "pipe/p_state.h"
  30 #include "util/u_string.h"
  31 #include "util/u_memory.h"
  32 #include "util/u_inlines.h"
  33 #include "util/u_format.h"
  34
  35 #include "fd3_texture.h"
  36 #include "fd3_util.h"
  37
  38 static enum a3xx_tex_clamp
  39 tex_clamp(unsigned wrap)
  40 {
  41         /* hardware probably supports more, but we can't coax all the
  42          * wrap/clamp modes out of the GLESv2 blob driver.
  43          *
  44          * TODO once we have basics working, go back and just try
  45          * different values and see what happens
  46          */
  47         switch (wrap) {
  48         case PIPE_TEX_WRAP_REPEAT:
  49                 return A3XX_TEX_REPEAT;
  50         case PIPE_TEX_WRAP_CLAMP:
  51         case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
  52                 return A3XX_TEX_CLAMP_TO_EDGE;
  53         case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
  54                 return A3XX_TEX_CLAMP_TO_BORDER;
  55         case PIPE_TEX_WRAP_MIRROR_CLAMP:
  56         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
  57                 /* these two we should emulate! */
  58         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
  59                 /* only works for PoT.. need to emulate otherwise! */
  60                 return A3XX_TEX_MIRROR_CLAMP;
  61         case PIPE_TEX_WRAP_MIRROR_REPEAT:
  62                 return A3XX_TEX_MIRROR_REPEAT;
  63         default:
  64                 DBG("invalid wrap: %u", wrap);
  65                 return 0;
  66         }
  67 }
  68
  69 static enum a3xx_tex_filter
  70 tex_filter(unsigned filter)
  71 {
  72         switch (filter) {
  73         case PIPE_TEX_FILTER_NEAREST:
  74                 return A3XX_TEX_NEAREST;
  75         case PIPE_TEX_FILTER_LINEAR:
  76                 return A3XX_TEX_LINEAR;
  77         default:
  78                 DBG("invalid filter: %u", filter);
  79                 return 0;
  80         }
  81 }
  82
  83 static void *
  84 fd3_sampler_state_create(struct pipe_context *pctx,
  85                 const struct pipe_sampler_state *cso)
  86 {
  87         struct fd3_sampler_stateobj *so = CALLOC_STRUCT(fd3_sampler_stateobj);
  88         bool miplinear = false;
  89
  90         if (!so)
  91                 return NULL;
  92
  93         if (cso->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR)
  94                 miplinear = true;
  95
  96         so->base = *cso;
  97
  98         so->texsamp0 =
  99                         COND(!cso->normalized_coords, A3XX_TEX_SAMP_0_UNNORM_COORDS) |
 100                         COND(miplinear, A3XX_TEX_SAMP_0_MIPFILTER_LINEAR) |
 101                         A3XX_TEX_SAMP_0_XY_MAG(tex_filter(cso->mag_img_filter)) |
 102                         A3XX_TEX_SAMP_0_XY_MIN(tex_filter(cso->min_img_filter)) |
 103                         A3XX_TEX_SAMP_0_WRAP_S(tex_clamp(cso->wrap_s)) |
 104                         A3XX_TEX_SAMP_0_WRAP_T(tex_clamp(cso->wrap_t)) |
 105                         A3XX_TEX_SAMP_0_WRAP_R(tex_clamp(cso->wrap_r));
 106
 107         if (cso->compare_mode)
 108                 so->texsamp0 |= A3XX_TEX_SAMP_0_COMPARE_FUNC(cso->compare_func); /* maps 1:1 */
 109
 110         if (cso->min_mip_filter != PIPE_TEX_MIPFILTER_NONE) {
 111                 so->texsamp1 =
 112                                 A3XX_TEX_SAMP_1_LOD_BIAS(cso->lod_bias) |
 113                                 A3XX_TEX_SAMP_1_MIN_LOD(cso->min_lod) |
 114                                 A3XX_TEX_SAMP_1_MAX_LOD(cso->max_lod);
 115         } else {
 116                 so->texsamp1 = 0x00000000;
 117         }
 118
 119         return so;
 120 }
 121
 122 static void
 123 fd3_sampler_states_bind(struct pipe_context *pctx,
 124                 unsigned shader, unsigned start,
 125                 unsigned nr, void **hwcso)
 126 {
 127         fd_sampler_states_bind(pctx, shader, start, nr, hwcso);
 128 }
 129
 130 static enum a3xx_tex_type
 131 tex_type(unsigned target)
 132 {
 133         switch (target) {
 134         default:
 135                 assert(0);
 136         case PIPE_BUFFER:
 137         case PIPE_TEXTURE_1D:
 138         case PIPE_TEXTURE_1D_ARRAY:
 139                 return A3XX_TEX_1D;
 140         case PIPE_TEXTURE_RECT:
 141         case PIPE_TEXTURE_2D:
 142         case PIPE_TEXTURE_2D_ARRAY:
 143                 return A3XX_TEX_2D;
 144         case PIPE_TEXTURE_3D:
 145                 return A3XX_TEX_3D;
 146         case PIPE_TEXTURE_CUBE:
 147         case PIPE_TEXTURE_CUBE_ARRAY:
 148                 return A3XX_TEX_CUBE;
 149         }
 150 }
 151
 152 static struct pipe_sampler_view *
 153 fd3_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
 154                 const struct pipe_sampler_view *cso)
 155 {
 156         struct fd3_pipe_sampler_view *so = CALLOC_STRUCT(fd3_pipe_sampler_view);
 157         struct fd_resource *rsc = fd_resource(prsc);
 158         unsigned lvl = cso->u.tex.first_level;
 159         unsigned miplevels = cso->u.tex.last_level - lvl;
 160
 161         if (!so)
 162                 return NULL;
 163
 164         so->base = *cso;
 165         pipe_reference(NULL, &prsc->reference);
 166         so->base.texture = prsc;
 167         so->base.reference.count = 1;
 168         so->base.context = pctx;
 169
 170         so->tex_resource =  rsc;
 171
 172         so->texconst0 =
 173                         A3XX_TEX_CONST_0_TYPE(tex_type(prsc->target)) |
 174                         A3XX_TEX_CONST_0_FMT(fd3_pipe2tex(cso->format)) |
 175                         A3XX_TEX_CONST_0_MIPLVLS(miplevels) |
 176                         fd3_tex_swiz(cso->format, cso->swizzle_r, cso->swizzle_g,
 177                                                 cso->swizzle_b, cso->swizzle_a);
 178
 179         if (util_format_is_srgb(cso->format))
 180                 so->texconst0 |= A3XX_TEX_CONST_0_SRGB;
 181
 182         so->texconst1 =
 183                         A3XX_TEX_CONST_1_FETCHSIZE(fd3_pipe2fetchsize(cso->format)) |
 184                         A3XX_TEX_CONST_1_WIDTH(u_minify(prsc->width0, lvl)) |
 185                         A3XX_TEX_CONST_1_HEIGHT(u_minify(prsc->height0, lvl));
 186         /* when emitted, A3XX_TEX_CONST_2_INDX() must be OR'd in: */
 187         so->texconst2 =
 188                         A3XX_TEX_CONST_2_PITCH(rsc->slices[lvl].pitch * rsc->cpp);
 189         switch (prsc->target) {
 190         case PIPE_TEXTURE_1D_ARRAY:
 191         case PIPE_TEXTURE_2D_ARRAY:
 192                 so->texconst3 =
 193                                 A3XX_TEX_CONST_3_DEPTH(prsc->array_size - 1) |
 194                                 A3XX_TEX_CONST_3_LAYERSZ1(rsc->slices[0].size0) |
 195                                 A3XX_TEX_CONST_3_LAYERSZ2(rsc->slices[0].size0);
 196                 break;
 197         case PIPE_TEXTURE_3D:
 198                 so->texconst3 =
 199                                 A3XX_TEX_CONST_3_DEPTH(u_minify(prsc->depth0, lvl)) |
 200                                 A3XX_TEX_CONST_3_LAYERSZ1(rsc->slices[0].size0) |
 201                                 A3XX_TEX_CONST_3_LAYERSZ2(rsc->slices[0].size0);
 202                 break;
 203         default:
 204                 so->texconst3 = 0x00000000;
 205                 break;
 206         }
 207
 208         return &so->base;
 209 }
 210
 211 void
 212 fd3_texture_init(struct pipe_context *pctx)
 213 {
 214         pctx->create_sampler_state = fd3_sampler_state_create;
 215         pctx->bind_sampler_states = fd3_sampler_states_bind;
 216         pctx->create_sampler_view = fd3_sampler_view_create;
 217 }