src/gallium/drivers/freedreno/freedreno_texture.c

   1 /*
   2  * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  * Authors:
  24  *    Rob Clark <robclark@freedesktop.org>
  25  */
  26
  27 #include "pipe/p_state.h"
  28 #include "util/u_string.h"
  29 #include "util/u_memory.h"
  30 #include "util/u_inlines.h"
  31
  32 #include "freedreno_texture.h"
  33 #include "freedreno_context.h"
  34 #include "freedreno_resource.h"
  35 #include "freedreno_util.h"
  36
  37 static void
  38 fd_sampler_state_delete(struct pipe_context *pctx, void *hwcso)
  39 {
  40         FREE(hwcso);
  41 }
  42
  43 static void
  44 fd_sampler_view_destroy(struct pipe_context *pctx,
  45                 struct pipe_sampler_view *view)
  46 {
  47         pipe_resource_reference(&view->texture, NULL);
  48         FREE(view);
  49 }
  50
  51 static void bind_sampler_states(struct fd_texture_stateobj *tex,
  52                 unsigned start, unsigned nr, void **hwcso)
  53 {
  54         unsigned i;
  55
  56         for (i = 0; i < nr; i++) {
  57                 unsigned p = i + start;
  58                 tex->samplers[p] = hwcso[i];
  59                 if (tex->samplers[p])
  60                         tex->valid_samplers |= (1 << p);
  61                 else
  62                         tex->valid_samplers &= ~(1 << p);
  63         }
  64
  65         tex->num_samplers = util_last_bit(tex->valid_samplers);
  66 }
  67
  68 static void set_sampler_views(struct fd_texture_stateobj *tex,
  69                 unsigned start, unsigned nr, struct pipe_sampler_view **views)
  70 {
  71         unsigned i;
  72         unsigned samplers = 0;
  73
  74         for (i = 0; i < nr; i++) {
  75                 struct pipe_sampler_view *view = views ? views[i] : NULL;
  76                 unsigned p = i + start;
  77                 pipe_sampler_view_reference(&tex->textures[p], view);
  78                 if (tex->textures[p]) {
  79                         fd_resource_set_usage(tex->textures[p]->texture, FD_DIRTY_TEX);
  80                         tex->valid_textures |= (1 << p);
  81                 } else {
  82                         tex->valid_textures &= ~(1 << p);
  83                 }
  84         }
  85
  86         tex->num_textures = util_last_bit(tex->valid_textures);
  87
  88         for (i = 0; i < tex->num_textures; i++) {
  89                 uint nr_samples = fd_resource_nr_samples(tex->textures[i]->texture);
  90                 samplers |= (nr_samples >> 1) << (i * 2);
  91         }
  92
  93         tex->samples = samplers;
  94 }
  95
  96 void
  97 fd_sampler_states_bind(struct pipe_context *pctx,
  98                 enum pipe_shader_type shader, unsigned start,
  99                 unsigned nr, void **hwcso)
 100 {
 101         struct fd_context *ctx = fd_context(pctx);
 102
 103         bind_sampler_states(&ctx->tex[shader], start, nr, hwcso);
 104         ctx->dirty_shader[shader] |= FD_DIRTY_SHADER_TEX;
 105         ctx->dirty |= FD_DIRTY_TEX;
 106 }
 107
 108 void
 109 fd_set_sampler_views(struct pipe_context *pctx, enum pipe_shader_type shader,
 110                 unsigned start, unsigned nr,
 111                 struct pipe_sampler_view **views)
 112 {
 113         struct fd_context *ctx = fd_context(pctx);
 114
 115         set_sampler_views(&ctx->tex[shader], start, nr, views);
 116         ctx->dirty_shader[shader] |= FD_DIRTY_SHADER_TEX;
 117         ctx->dirty |= FD_DIRTY_TEX;
 118 }
 119
 120 void
 121 fd_texture_init(struct pipe_context *pctx)
 122 {
 123         if (!pctx->delete_sampler_state)
 124                 pctx->delete_sampler_state = fd_sampler_state_delete;
 125         if (!pctx->sampler_view_destroy)
 126                 pctx->sampler_view_destroy = fd_sampler_view_destroy;
 127 }
 128
 129 /* helper for setting up border-color buffer for a3xx/a4xx: */
 130 void
 131 fd_setup_border_colors(struct fd_texture_stateobj *tex, void *ptr,
 132                 unsigned offset)
 133 {
 134         unsigned i, j;
 135
 136         for (i = 0; i < tex->num_samplers; i++) {
 137                 struct pipe_sampler_state *sampler = tex->samplers[i];
 138                 uint16_t *bcolor = (uint16_t *)((uint8_t *)ptr +
 139                                 (BORDERCOLOR_SIZE * offset) +
 140                                 (BORDERCOLOR_SIZE * i));
 141                 uint32_t *bcolor32 = (uint32_t *)&bcolor[16];
 142
 143                 if (!sampler)
 144                         continue;
 145
 146                 /*
 147                  * XXX HACK ALERT XXX
 148                  *
 149                  * The border colors need to be swizzled in a particular
 150                  * format-dependent order. Even though samplers don't know about
 151                  * formats, we can assume that with a GL state tracker, there's a
 152                  * 1:1 correspondence between sampler and texture. Take advantage
 153                  * of that knowledge.
 154                  */
 155                 if (i < tex->num_textures && tex->textures[i]) {
 156                         const struct util_format_description *desc =
 157                                         util_format_description(tex->textures[i]->format);
 158                         for (j = 0; j < 4; j++) {
 159                                 if (desc->swizzle[j] >= 4)
 160                                         continue;
 161
 162                                 const struct util_format_channel_description *chan =
 163                                         &desc->channel[desc->swizzle[j]];
 164                                 if (chan->pure_integer) {
 165                                         bcolor32[desc->swizzle[j] + 4] = sampler->border_color.i[j];
 166                                         bcolor[desc->swizzle[j] + 8] = sampler->border_color.i[j];
 167                                 } else {
 168                                         bcolor32[desc->swizzle[j]] = fui(sampler->border_color.f[j]);
 169                                         bcolor[desc->swizzle[j]] =
 170                                                 util_float_to_half(sampler->border_color.f[j]);
 171                                 }
 172                         }
 173                 }
 174         }
 175 }