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 *prog,
  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++;
  61                 prog->samplers[i] = hwcso[i];
  62                 prog->dirty_samplers |= (1 << i);
  63         }
  64
  65         for (; i < prog->num_samplers; i++) {
  66                 prog->samplers[i] = NULL;
  67                 prog->dirty_samplers |= (1 << i);
  68         }
  69
  70         prog->num_samplers = new_nr;
  71 }
  72
  73 static void set_sampler_views(struct fd_texture_stateobj *prog,
  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++;
  82                 pipe_sampler_view_reference(&prog->textures[i], views[i]);
  83                 prog->dirty_samplers |= (1 << i);
  84         }
  85
  86         for (; i < prog->num_textures; i++) {
  87                 pipe_sampler_view_reference(&prog->textures[i], NULL);
  88                 prog->dirty_samplers |= (1 << i);
  89         }
  90
  91         prog->num_textures = new_nr;
  92 }
  93
  94 static 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                 /* on a2xx, since there is a flat address space for textures/samplers,
 105                  * a change in # of fragment textures/samplers will trigger patching and
 106                  * re-emitting the vertex shader:
 107                  */
 108                 if (nr != ctx->fragtex.num_samplers)
 109                         ctx->dirty |= FD_DIRTY_TEXSTATE;
 110
 111                 bind_sampler_states(&ctx->fragtex, nr, hwcso);
 112                 ctx->dirty |= FD_DIRTY_FRAGTEX;
 113         }
 114         else if (shader == PIPE_SHADER_VERTEX) {
 115                 bind_sampler_states(&ctx->verttex, nr, hwcso);
 116                 ctx->dirty |= FD_DIRTY_VERTTEX;
 117         }
 118 }
 119
 120
 121 static void
 122 fd_fragtex_set_sampler_views(struct pipe_context *pctx, unsigned nr,
 123                 struct pipe_sampler_view **views)
 124 {
 125         struct fd_context *ctx = fd_context(pctx);
 126
 127         /* on a2xx, since there is a flat address space for textures/samplers,
 128          * a change in # of fragment textures/samplers will trigger patching and
 129          * re-emitting the vertex shader:
 130          */
 131         if (nr != ctx->fragtex.num_textures)
 132                 ctx->dirty |= FD_DIRTY_TEXSTATE;
 133
 134         set_sampler_views(&ctx->fragtex, nr, views);
 135         ctx->dirty |= FD_DIRTY_FRAGTEX;
 136 }
 137
 138 static void
 139 fd_verttex_set_sampler_views(struct pipe_context *pctx, unsigned nr,
 140                 struct pipe_sampler_view **views)
 141 {
 142         struct fd_context *ctx = fd_context(pctx);
 143         set_sampler_views(&ctx->verttex, nr, views);
 144         ctx->dirty |= FD_DIRTY_VERTTEX;
 145 }
 146
 147 static void
 148 fd_set_sampler_views(struct pipe_context *pctx, unsigned shader,
 149                      unsigned start, unsigned nr,
 150                      struct pipe_sampler_view **views)
 151 {
 152    assert(start == 0);
 153    switch (shader) {
 154    case PIPE_SHADER_FRAGMENT:
 155       fd_fragtex_set_sampler_views(pctx, nr, views);
 156       break;
 157    case PIPE_SHADER_VERTEX:
 158       fd_verttex_set_sampler_views(pctx, nr, views);
 159       break;
 160    default:
 161       ;
 162    }
 163 }
 164
 165 void
 166 fd_texture_init(struct pipe_context *pctx)
 167 {
 168         pctx->delete_sampler_state = fd_sampler_state_delete;
 169
 170         pctx->sampler_view_destroy = fd_sampler_view_destroy;
 171
 172         pctx->bind_sampler_states = fd_sampler_states_bind;
 173         pctx->set_sampler_views = fd_set_sampler_views;
 174 }