src/gallium/drivers/freedreno/a4xx/fd4_texture.c

   1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
   2
   3 /*
   4  * Copyright (C) 2014 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 "fd4_texture.h"
  36 #include "fd4_util.h"
  37
  38 /* TODO do we need to emulate clamp-to-edge like a3xx? */
  39 static enum a4xx_tex_clamp
  40 tex_clamp(unsigned wrap)
  41 {
  42         /* hardware probably supports more, but we can't coax all the
  43          * wrap/clamp modes out of the GLESv2 blob driver.
  44          *
  45          * TODO once we have basics working, go back and just try
  46          * different values and see what happens
  47          */
  48         switch (wrap) {
  49         case PIPE_TEX_WRAP_REPEAT:
  50                 return A4XX_TEX_REPEAT;
  51         case PIPE_TEX_WRAP_CLAMP:
  52         case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
  53                 return A4XX_TEX_CLAMP_TO_EDGE;
  54         case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
  55 // TODO
  56 //              return A4XX_TEX_CLAMP_TO_BORDER;
  57         case PIPE_TEX_WRAP_MIRROR_CLAMP:
  58         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
  59         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
  60 // TODO
  61 //              return A4XX_TEX_MIRROR_CLAMP;
  62         case PIPE_TEX_WRAP_MIRROR_REPEAT:
  63                 return A4XX_TEX_MIRROR_REPEAT;
  64         default:
  65                 DBG("invalid wrap: %u", wrap);
  66                 return 0;
  67         }
  68 }
  69
  70 static enum a4xx_tex_filter
  71 tex_filter(unsigned filter)
  72 {
  73         switch (filter) {
  74         case PIPE_TEX_FILTER_NEAREST:
  75                 return A4XX_TEX_NEAREST;
  76         case PIPE_TEX_FILTER_LINEAR:
  77                 return A4XX_TEX_LINEAR;
  78         default:
  79                 DBG("invalid filter: %u", filter);
  80                 return 0;
  81         }
  82 }
  83
  84 static void *
  85 fd4_sampler_state_create(struct pipe_context *pctx,
  86                 const struct pipe_sampler_state *cso)
  87 {
  88         struct fd4_sampler_stateobj *so = CALLOC_STRUCT(fd4_sampler_stateobj);
  89
  90         if (!so)
  91                 return NULL;
  92
  93         so->base = *cso;
  94
  95         so->texsamp0 =
  96                 A4XX_TEX_SAMP_0_XY_MAG(tex_filter(cso->mag_img_filter)) |
  97                 A4XX_TEX_SAMP_0_XY_MIN(tex_filter(cso->min_img_filter)) |
  98                 A4XX_TEX_SAMP_0_WRAP_S(tex_clamp(cso->wrap_s)) |
  99                 A4XX_TEX_SAMP_0_WRAP_T(tex_clamp(cso->wrap_t)) |
 100                 A4XX_TEX_SAMP_0_WRAP_R(tex_clamp(cso->wrap_r));
 101
 102         if (cso->min_mip_filter != PIPE_TEX_MIPFILTER_NONE) {
 103                 so->texsamp1 =
 104                         A4XX_TEX_SAMP_1_MIN_LOD(cso->min_lod) |
 105                         A4XX_TEX_SAMP_1_MAX_LOD(cso->max_lod);
 106         } else {
 107                 so->texsamp1 = 0x00000000;
 108         }
 109
 110         if (cso->compare_mode)
 111                 so->texsamp1 |= A4XX_TEX_SAMP_1_COMPARE_FUNC(cso->compare_func); /* maps 1:1 */
 112
 113         return so;
 114 }
 115
 116 static enum a4xx_tex_type
 117 tex_type(unsigned target)
 118 {
 119         switch (target) {
 120         default:
 121                 assert(0);
 122         case PIPE_BUFFER:
 123         case PIPE_TEXTURE_1D:
 124         case PIPE_TEXTURE_1D_ARRAY:
 125                 return A4XX_TEX_1D;
 126         case PIPE_TEXTURE_RECT:
 127         case PIPE_TEXTURE_2D:
 128         case PIPE_TEXTURE_2D_ARRAY:
 129                 return A4XX_TEX_2D;
 130         case PIPE_TEXTURE_3D:
 131                 return A4XX_TEX_3D;
 132         case PIPE_TEXTURE_CUBE:
 133         case PIPE_TEXTURE_CUBE_ARRAY:
 134                 return A4XX_TEX_CUBE;
 135         }
 136 }
 137
 138 static struct pipe_sampler_view *
 139 fd4_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
 140                 const struct pipe_sampler_view *cso)
 141 {
 142         struct fd4_pipe_sampler_view *so = CALLOC_STRUCT(fd4_pipe_sampler_view);
 143         struct fd_resource *rsc = fd_resource(prsc);
 144         unsigned lvl = cso->u.tex.first_level;
 145
 146         if (!so)
 147                 return NULL;
 148
 149         so->base = *cso;
 150         pipe_reference(NULL, &prsc->reference);
 151         so->base.texture = prsc;
 152         so->base.reference.count = 1;
 153         so->base.context = pctx;
 154
 155         so->tex_resource =  rsc;
 156
 157         so->texconst0 =
 158                 A4XX_TEX_CONST_0_TYPE(tex_type(prsc->target)) |
 159                 A4XX_TEX_CONST_0_FMT(fd4_pipe2tex(cso->format)) |
 160                 fd4_tex_swiz(cso->format, cso->swizzle_r, cso->swizzle_g,
 161                                 cso->swizzle_b, cso->swizzle_a);
 162
 163         so->texconst1 =
 164                 A4XX_TEX_CONST_1_WIDTH(prsc->width0) |
 165                 A4XX_TEX_CONST_1_HEIGHT(prsc->height0);
 166         so->texconst2 =
 167                 A4XX_TEX_CONST_2_PITCH(rsc->slices[lvl].pitch * rsc->cpp);
 168
 169         switch (prsc->target) {
 170         case PIPE_TEXTURE_1D_ARRAY:
 171         case PIPE_TEXTURE_2D_ARRAY:
 172         case PIPE_TEXTURE_3D:
 173                 so->texconst3 =
 174                         A4XX_TEX_CONST_3_LAYERSZ(rsc->slices[0].size0);
 175                 break;
 176         default:
 177                 so->texconst3 = 0x00000000;
 178                 break;
 179         }
 180
 181         return &so->base;
 182 }
 183
 184 void
 185 fd4_texture_init(struct pipe_context *pctx)
 186 {
 187         pctx->create_sampler_state = fd4_sampler_state_create;
 188         pctx->bind_sampler_states = fd_sampler_states_bind;
 189         pctx->create_sampler_view = fd4_sampler_view_create;
 190         pctx->set_sampler_views = fd_set_sampler_views;
 191 }