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         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
  58                 return A3XX_TEX_MIRROR_CLAMP;
  59         case PIPE_TEX_WRAP_MIRROR_REPEAT:
  60                 return A3XX_TEX_MIRROR_REPEAT;
  61         default:
  62                 DBG("invalid wrap: %u", wrap);
  63                 return 0;
  64         }
  65 }
  66
  67 static enum a3xx_tex_filter
  68 tex_filter(unsigned filter)
  69 {
  70         switch (filter) {
  71         case PIPE_TEX_FILTER_NEAREST:
  72                 return A3XX_TEX_NEAREST;
  73         case PIPE_TEX_FILTER_LINEAR:
  74                 return A3XX_TEX_LINEAR;
  75         default:
  76                 DBG("invalid filter: %u", filter);
  77                 return 0;
  78         }
  79 }
  80
  81 static void *
  82 fd3_sampler_state_create(struct pipe_context *pctx,
  83                 const struct pipe_sampler_state *cso)
  84 {
  85         struct fd3_sampler_stateobj *so = CALLOC_STRUCT(fd3_sampler_stateobj);
  86         bool miplinear = false;
  87
  88         if (!so)
  89                 return NULL;
  90
  91         if (cso->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR)
  92                 miplinear = true;
  93
  94         so->base = *cso;
  95
  96         so->texsamp0 =
  97                         COND(!cso->normalized_coords, A3XX_TEX_SAMP_0_UNNORM_COORDS) |
  98                         COND(miplinear, A3XX_TEX_SAMP_0_MIPFILTER_LINEAR) |
  99                         A3XX_TEX_SAMP_0_XY_MAG(tex_filter(cso->mag_img_filter)) |
 100                         A3XX_TEX_SAMP_0_XY_MIN(tex_filter(cso->min_img_filter)) |
 101                         A3XX_TEX_SAMP_0_WRAP_S(tex_clamp(cso->wrap_s)) |
 102                         A3XX_TEX_SAMP_0_WRAP_T(tex_clamp(cso->wrap_t)) |
 103                         A3XX_TEX_SAMP_0_WRAP_R(tex_clamp(cso->wrap_r));
 104
 105         if (cso->compare_mode)
 106                 so->texsamp0 |= A3XX_TEX_SAMP_0_COMPARE_FUNC(cso->compare_func); /* maps 1:1 */
 107
 108         if (cso->min_mip_filter != PIPE_TEX_MIPFILTER_NONE) {
 109                 so->texsamp1 =
 110                                 A3XX_TEX_SAMP_1_MIN_LOD(cso->min_lod) |
 111                                 A3XX_TEX_SAMP_1_MAX_LOD(cso->max_lod);
 112         } else {
 113                 so->texsamp1 = 0x00000000;
 114         }
 115
 116         return so;
 117 }
 118
 119 static enum a3xx_tex_type
 120 tex_type(unsigned target)
 121 {
 122         switch (target) {
 123         default:
 124                 assert(0);
 125         case PIPE_BUFFER:
 126         case PIPE_TEXTURE_1D:
 127         case PIPE_TEXTURE_1D_ARRAY:
 128                 return A3XX_TEX_1D;
 129         case PIPE_TEXTURE_RECT:
 130         case PIPE_TEXTURE_2D:
 131         case PIPE_TEXTURE_2D_ARRAY:
 132                 return A3XX_TEX_2D;
 133         case PIPE_TEXTURE_3D:
 134                 return A3XX_TEX_3D;
 135         case PIPE_TEXTURE_CUBE:
 136         case PIPE_TEXTURE_CUBE_ARRAY:
 137                 return A3XX_TEX_CUBE;
 138         }
 139 }
 140
 141 static struct pipe_sampler_view *
 142 fd3_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
 143                 const struct pipe_sampler_view *cso)
 144 {
 145         struct fd3_pipe_sampler_view *so = CALLOC_STRUCT(fd3_pipe_sampler_view);
 146         struct fd_resource *rsc = fd_resource(prsc);
 147         unsigned miplevels = cso->u.tex.last_level - cso->u.tex.first_level;
 148
 149         if (!so)
 150                 return NULL;
 151
 152         so->base = *cso;
 153         pipe_reference(NULL, &prsc->reference);
 154         so->base.texture = prsc;
 155         so->base.reference.count = 1;
 156         so->base.context = pctx;
 157
 158         so->tex_resource =  rsc;
 159         so->mipaddrs = 1 + miplevels;
 160
 161         so->texconst0 =
 162                         A3XX_TEX_CONST_0_TYPE(tex_type(prsc->target)) |
 163                         A3XX_TEX_CONST_0_FMT(fd3_pipe2tex(cso->format)) |
 164                         A3XX_TEX_CONST_0_MIPLVLS(miplevels) |
 165                         fd3_tex_swiz(cso->format, cso->swizzle_r, cso->swizzle_g,
 166                                                 cso->swizzle_b, cso->swizzle_a);
 167
 168         if (util_format_is_srgb(cso->format))
 169                 so->texconst0 |= A3XX_TEX_CONST_0_SRGB;
 170
 171         so->texconst1 =
 172                         A3XX_TEX_CONST_1_FETCHSIZE(fd3_pipe2fetchsize(cso->format)) |
 173                         A3XX_TEX_CONST_1_WIDTH(prsc->width0) |
 174                         A3XX_TEX_CONST_1_HEIGHT(prsc->height0);
 175         /* when emitted, A3XX_TEX_CONST_2_INDX() must be OR'd in: */
 176         so->texconst2 =
 177                         A3XX_TEX_CONST_2_PITCH(rsc->slices[0].pitch * rsc->cpp);
 178         so->texconst3 = 0x00000000;  /* ??? */
 179
 180         return &so->base;
 181 }
 182
 183 void
 184 fd3_texture_init(struct pipe_context *pctx)
 185 {
 186         pctx->create_sampler_state = fd3_sampler_state_create;
 187         pctx->create_sampler_view = fd3_sampler_view_create;
 188 }