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 start, unsigned nr, void **hwcso)
  54 {
  55         unsigned i;
  56
  57         for (i = 0; i < nr; i++) {
  58                 unsigned p = i + start;
  59                 tex->samplers[p] = hwcso[i];
  60                 if (tex->samplers[p])
  61                         tex->valid_samplers |= (1 << p);
  62                 else
  63                         tex->valid_samplers &= ~(1 << p);
  64         }
  65
  66         tex->num_samplers = util_last_bit(tex->valid_samplers);
  67 }
  68
  69 static void set_sampler_views(struct fd_texture_stateobj *tex,
  70                 unsigned start, unsigned nr, struct pipe_sampler_view **views)
  71 {
  72         unsigned i;
  73         unsigned samplers = 0;
  74
  75         for (i = 0; i < nr; i++) {
  76                 struct pipe_sampler_view *view = views ? views[i] : NULL;
  77                 unsigned p = i + start;
  78                 pipe_sampler_view_reference(&tex->textures[p], view);
  79                 if (tex->textures[p])
  80                         tex->valid_textures |= (1 << p);
  81                 else
  82                         tex->valid_textures &= ~(1 << p);
  83         }
  84
  85         tex->num_textures = util_last_bit(tex->valid_textures);
  86
  87         for (i = 0; i < tex->num_textures; i++) {
  88                 uint nr_samples = tex->textures[i]->texture->nr_samples;
  89                 samplers |= (nr_samples >> 1) << (i * 2);
  90         }
  91
  92         tex->samples = samplers;
  93 }
  94
  95 void
  96 fd_sampler_states_bind(struct pipe_context *pctx,
  97                 enum pipe_shader_type shader, unsigned start,
  98                 unsigned nr, void **hwcso)
  99 {
 100         struct fd_context *ctx = fd_context(pctx);
 101
 102         bind_sampler_states(&ctx->tex[shader], start, nr, hwcso);
 103         ctx->dirty_shader[shader] |= FD_DIRTY_SHADER_TEX;
 104         ctx->dirty |= FD_DIRTY_TEX;
 105 }
 106
 107 void
 108 fd_set_sampler_views(struct pipe_context *pctx, enum pipe_shader_type shader,
 109                 unsigned start, unsigned nr,
 110                 struct pipe_sampler_view **views)
 111 {
 112         struct fd_context *ctx = fd_context(pctx);
 113
 114         set_sampler_views(&ctx->tex[shader], start, nr, views);
 115         ctx->dirty_shader[shader] |= FD_DIRTY_SHADER_TEX;
 116         ctx->dirty |= FD_DIRTY_TEX;
 117 }
 118
 119 void
 120 fd_texture_init(struct pipe_context *pctx)
 121 {
 122         pctx->delete_sampler_state = fd_sampler_state_delete;
 123
 124         pctx->sampler_view_destroy = fd_sampler_view_destroy;
 125 }
 126
 127 /* helper for setting up border-color buffer for a3xx/a4xx: */
 128 void
 129 fd_setup_border_colors(struct fd_texture_stateobj *tex, void *ptr,
 130                 unsigned offset)
 131 {
 132         unsigned i, j;
 133
 134         for (i = 0; i < tex->num_samplers; i++) {
 135                 struct pipe_sampler_state *sampler = tex->samplers[i];
 136                 uint16_t *bcolor = (uint16_t *)((uint8_t *)ptr +
 137                                 (BORDERCOLOR_SIZE * offset) +
 138                                 (BORDERCOLOR_SIZE * i));
 139                 uint32_t *bcolor32 = (uint32_t *)&bcolor[16];
 140
 141                 if (!sampler)
 142                         continue;
 143
 144                 /*
 145                  * XXX HACK ALERT XXX
 146                  *
 147                  * The border colors need to be swizzled in a particular
 148                  * format-dependent order. Even though samplers don't know about
 149                  * formats, we can assume that with a GL state tracker, there's a
 150                  * 1:1 correspondence between sampler and texture. Take advantage
 151                  * of that knowledge.
 152                  */
 153                 if (i < tex->num_textures && tex->textures[i]) {
 154                         const struct util_format_description *desc =
 155                                         util_format_description(tex->textures[i]->format);
 156                         for (j = 0; j < 4; j++) {
 157                                 if (desc->swizzle[j] >= 4)
 158                                         continue;
 159
 160                                 const struct util_format_channel_description *chan =
 161                                         &desc->channel[desc->swizzle[j]];
 162                                 if (chan->pure_integer) {
 163                                         bcolor32[desc->swizzle[j] + 4] = sampler->border_color.i[j];
 164                                         bcolor[desc->swizzle[j] + 8] = sampler->border_color.i[j];
 165                                 } else {
 166                                         bcolor32[desc->swizzle[j]] = fui(sampler->border_color.f[j]);
 167                                         bcolor[desc->swizzle[j]] =
 168                                                 util_float_to_half(sampler->border_color.f[j]);
 169                                 }
 170                         }
 171                 }
 172         }
 173 }