src/gallium/drivers/freedreno/freedreno_texture.c

   1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
   2
   3 /*
   4  * Copyright (C) 2012 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
  34 #include "freedreno_texture.h"
  35 #include "freedreno_context.h"
  36 #include "freedreno_util.h"
  37
  38 static void
  39 fd_sampler_state_delete(struct pipe_context *pctx, void *hwcso)
  40 {
  41         FREE(hwcso);
  42 }
  43
  44 static void
  45 fd_sampler_view_destroy(struct pipe_context *pctx,
  46                 struct pipe_sampler_view *view)
  47 {
  48         pipe_resource_reference(&view->texture, NULL);
  49         FREE(view);
  50 }
  51
  52 static void bind_sampler_states(struct fd_texture_stateobj *tex,
  53                 unsigned nr, void **hwcso)
  54 {
  55         unsigned i;
  56         unsigned new_nr = 0;
  57
  58         for (i = 0; i < nr; i++) {
  59                 if (hwcso[i])
  60                         new_nr = i + 1;
  61                 tex->samplers[i] = hwcso[i];
  62                 tex->dirty_samplers |= (1 << i);
  63         }
  64
  65         for (; i < tex->num_samplers; i++) {
  66                 tex->samplers[i] = NULL;
  67                 tex->dirty_samplers |= (1 << i);
  68         }
  69
  70         tex->num_samplers = new_nr;
  71 }
  72
  73 static void set_sampler_views(struct fd_texture_stateobj *tex,
  74                 unsigned nr, struct pipe_sampler_view **views)
  75 {
  76         unsigned i;
  77         unsigned new_nr = 0;
  78
  79         for (i = 0; i < nr; i++) {
  80                 if (views[i])
  81                         new_nr = i + 1;
  82                 pipe_sampler_view_reference(&tex->textures[i], views[i]);
  83                 tex->dirty_samplers |= (1 << i);
  84         }
  85
  86         for (; i < tex->num_textures; i++) {
  87                 pipe_sampler_view_reference(&tex->textures[i], NULL);
  88                 tex->dirty_samplers |= (1 << i);
  89         }
  90
  91         tex->num_textures = new_nr;
  92 }
  93
  94 void
  95 fd_sampler_states_bind(struct pipe_context *pctx,
  96                 unsigned shader, unsigned start,
  97                 unsigned nr, void **hwcso)
  98 {
  99         struct fd_context *ctx = fd_context(pctx);
 100
 101         assert(start == 0);
 102
 103         if (shader == PIPE_SHADER_FRAGMENT) {
 104                 bind_sampler_states(&ctx->fragtex, nr, hwcso);
 105                 ctx->dirty |= FD_DIRTY_FRAGTEX;
 106         }
 107         else if (shader == PIPE_SHADER_VERTEX) {
 108                 bind_sampler_states(&ctx->verttex, nr, hwcso);
 109                 ctx->dirty |= FD_DIRTY_VERTTEX;
 110         }
 111 }
 112
 113
 114 static void
 115 fd_fragtex_set_sampler_views(struct pipe_context *pctx, unsigned nr,
 116                 struct pipe_sampler_view **views)
 117 {
 118         struct fd_context *ctx = fd_context(pctx);
 119
 120         /* on a2xx, since there is a flat address space for textures/samplers,
 121          * a change in # of fragment textures/samplers will trigger patching and
 122          * re-emitting the vertex shader:
 123          */
 124         if (nr != ctx->fragtex.num_textures)
 125                 ctx->dirty |= FD_DIRTY_TEXSTATE;
 126
 127         set_sampler_views(&ctx->fragtex, nr, views);
 128         ctx->dirty |= FD_DIRTY_FRAGTEX;
 129 }
 130
 131 static void
 132 fd_verttex_set_sampler_views(struct pipe_context *pctx, unsigned nr,
 133                 struct pipe_sampler_view **views)
 134 {
 135         struct fd_context *ctx = fd_context(pctx);
 136         set_sampler_views(&ctx->verttex, nr, views);
 137         ctx->dirty |= FD_DIRTY_VERTTEX;
 138 }
 139
 140 void
 141 fd_set_sampler_views(struct pipe_context *pctx, unsigned shader,
 142                      unsigned start, unsigned nr,
 143                      struct pipe_sampler_view **views)
 144 {
 145    assert(start == 0);
 146    switch (shader) {
 147    case PIPE_SHADER_FRAGMENT:
 148       fd_fragtex_set_sampler_views(pctx, nr, views);
 149       break;
 150    case PIPE_SHADER_VERTEX:
 151       fd_verttex_set_sampler_views(pctx, nr, views);
 152       break;
 153    default:
 154       ;
 155    }
 156 }
 157
 158 void
 159 fd_texture_init(struct pipe_context *pctx)
 160 {
 161         pctx->delete_sampler_state = fd_sampler_state_delete;
 162
 163         pctx->sampler_view_destroy = fd_sampler_view_destroy;
 164 }
 165
 166 /* helper for setting up border-color buffer for a3xx/a4xx: */
 167 void
 168 fd_setup_border_colors(struct fd_texture_stateobj *tex, void *ptr,
 169                 unsigned offset)
 170 {
 171         unsigned i, j;
 172
 173         for (i = 0; i < tex->num_samplers; i++) {
 174                 struct pipe_sampler_state *sampler = tex->samplers[i];
 175                 uint16_t *bcolor = (uint16_t *)((uint8_t *)ptr +
 176                                 (BORDERCOLOR_SIZE * offset) +
 177                                 (BORDERCOLOR_SIZE * i));
 178                 uint32_t *bcolor32 = (uint32_t *)&bcolor[16];
 179
 180                 if (!sampler)
 181                         continue;
 182
 183                 /*
 184                  * XXX HACK ALERT XXX
 185                  *
 186                  * The border colors need to be swizzled in a particular
 187                  * format-dependent order. Even though samplers don't know about
 188                  * formats, we can assume that with a GL state tracker, there's a
 189                  * 1:1 correspondence between sampler and texture. Take advantage
 190                  * of that knowledge.
 191                  */
 192                 if (i < tex->num_textures && tex->textures[i]) {
 193                         const struct util_format_description *desc =
 194                                         util_format_description(tex->textures[i]->format);
 195                         for (j = 0; j < 4; j++) {
 196                                 if (desc->swizzle[j] >= 4)
 197                                         continue;
 198
 199                                 const struct util_format_channel_description *chan =
 200                                         &desc->channel[desc->swizzle[j]];
 201                                 if (chan->pure_integer) {
 202                                         bcolor32[desc->swizzle[j] + 4] = sampler->border_color.i[j];
 203                                         bcolor[desc->swizzle[j] + 8] = sampler->border_color.i[j];
 204                                 } else {
 205                                         bcolor32[desc->swizzle[j]] = fui(sampler->border_color.f[j]);
 206                                         bcolor[desc->swizzle[j]] =
 207                                                 util_float_to_half(sampler->border_color.f[j]);
 208                                 }
 209                         }
 210                 }
 211         }
 212 }