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_util.h"
  36
  37 static enum sq_tex_clamp
  38 tex_clamp(unsigned wrap)
  39 {
  40         switch (wrap) {
  41         case PIPE_TEX_WRAP_REPEAT:
  42                 return SQ_TEX_WRAP;
  43         case PIPE_TEX_WRAP_CLAMP:
  44                 return SQ_TEX_CLAMP_HALF_BORDER;
  45         case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
  46                 return SQ_TEX_CLAMP_LAST_TEXEL;
  47         case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
  48                 return SQ_TEX_CLAMP_BORDER;
  49         case PIPE_TEX_WRAP_MIRROR_REPEAT:
  50                 return SQ_TEX_MIRROR;
  51         case PIPE_TEX_WRAP_MIRROR_CLAMP:
  52                 return SQ_TEX_MIRROR_ONCE_HALF_BORDER;
  53         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
  54                 return SQ_TEX_MIRROR_ONCE_LAST_TEXEL;
  55         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
  56                 return SQ_TEX_MIRROR_ONCE_BORDER;
  57         default:
  58                 DBG("invalid wrap: %u", wrap);
  59                 return 0;
  60         }
  61 }
  62
  63 static enum sq_tex_filter
  64 tex_filter(unsigned filter)
  65 {
  66         switch (filter) {
  67         case PIPE_TEX_FILTER_NEAREST:
  68                 return SQ_TEX_FILTER_POINT;
  69         case PIPE_TEX_FILTER_LINEAR:
  70                 return SQ_TEX_FILTER_BILINEAR;
  71         default:
  72                 DBG("invalid filter: %u", filter);
  73                 return 0;
  74         }
  75 }
  76
  77 static void *
  78 fd_sampler_state_create(struct pipe_context *pctx,
  79                 const struct pipe_sampler_state *cso)
  80 {
  81         struct fd_sampler_stateobj *so = CALLOC_STRUCT(fd_sampler_stateobj);
  82
  83         if (!so)
  84                 return NULL;
  85
  86         so->base = *cso;
  87
  88         /* SQ_TEX0_PITCH() must be OR'd in later when we know the bound texture: */
  89         so->tex0 =
  90                 A2XX_SQ_TEX_0_CLAMP_X(tex_clamp(cso->wrap_s)) |
  91                 A2XX_SQ_TEX_0_CLAMP_Y(tex_clamp(cso->wrap_t)) |
  92                 A2XX_SQ_TEX_0_CLAMP_Z(tex_clamp(cso->wrap_r));
  93
  94         so->tex3 =
  95                 A2XX_SQ_TEX_3_XY_MAG_FILTER(tex_filter(cso->mag_img_filter)) |
  96                 A2XX_SQ_TEX_3_XY_MIN_FILTER(tex_filter(cso->min_img_filter));
  97
  98         so->tex4 = 0x00000000; /* ??? */
  99         so->tex5 = 0x00000200; /* ??? */
 100
 101         return so;
 102 }
 103
 104 static void
 105 fd_sampler_state_delete(struct pipe_context *pctx, void *hwcso)
 106 {
 107         FREE(hwcso);
 108 }
 109
 110 static struct pipe_sampler_view *
 111 fd_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
 112                 const struct pipe_sampler_view *cso)
 113 {
 114         struct fd_pipe_sampler_view *so = CALLOC_STRUCT(fd_pipe_sampler_view);
 115         struct fd_resource *rsc = fd_resource(prsc);
 116
 117         if (!so)
 118                 return NULL;
 119
 120         so->base = *cso;
 121         pipe_reference(NULL, &prsc->reference);
 122         so->base.texture = prsc;
 123         so->base.reference.count = 1;
 124         so->base.context = pctx;
 125
 126         so->tex_resource =  rsc;
 127         so->fmt = fd_pipe2surface(cso->format);
 128
 129         so->tex0 = A2XX_SQ_TEX_0_PITCH(rsc->pitch);
 130         so->tex2 =
 131                 A2XX_SQ_TEX_2_HEIGHT(prsc->height0 - 1) |
 132                 A2XX_SQ_TEX_2_WIDTH(prsc->width0 - 1);
 133         so->tex3 = fd_tex_swiz(cso->format, cso->swizzle_r, cso->swizzle_g,
 134                         cso->swizzle_b, cso->swizzle_a);
 135
 136         return &so->base;
 137 }
 138
 139 static void
 140 fd_sampler_view_destroy(struct pipe_context *pctx,
 141                 struct pipe_sampler_view *view)
 142 {
 143         pipe_resource_reference(&view->texture, NULL);
 144         FREE(view);
 145 }
 146
 147 static void bind_sampler_states(struct fd_texture_stateobj *prog,
 148                 unsigned nr, void **hwcso)
 149 {
 150         unsigned i;
 151
 152         for (i = 0; i < nr; i++) {
 153                 prog->samplers[i] = hwcso[i];
 154                 prog->dirty_samplers |= (1 << i);
 155         }
 156
 157         for (; i < prog->num_samplers; i++) {
 158                 prog->samplers[i] = NULL;
 159                 prog->dirty_samplers |= (1 << i);
 160         }
 161
 162         prog->num_samplers = nr;
 163 }
 164
 165 static void set_sampler_views(struct fd_texture_stateobj *prog,
 166                 unsigned nr, struct pipe_sampler_view **views)
 167 {
 168         unsigned i;
 169
 170         for (i = 0; i < nr; i++) {
 171                 pipe_sampler_view_reference(&prog->textures[i], views[i]);
 172                 prog->dirty_samplers |= (1 << i);
 173         }
 174
 175         for (; i < prog->num_textures; i++) {
 176                 pipe_sampler_view_reference(&prog->textures[i], NULL);
 177                 prog->dirty_samplers |= (1 << i);
 178         }
 179
 180         prog->num_textures = nr;
 181 }
 182
 183 static void
 184 fd_fragtex_sampler_states_bind(struct pipe_context *pctx,
 185                 unsigned nr, void **hwcso)
 186 {
 187         struct fd_context *ctx = fd_context(pctx);
 188
 189         /* on a2xx, since there is a flat address space for textures/samplers,
 190          * a change in # of fragment textures/samplers will trigger patching and
 191          * re-emitting the vertex shader:
 192          */
 193         if (nr != ctx->fragtex.num_samplers)
 194                 ctx->dirty |= FD_DIRTY_TEXSTATE;
 195
 196         bind_sampler_states(&ctx->fragtex, nr, hwcso);
 197         ctx->dirty |= FD_DIRTY_FRAGTEX;
 198 }
 199
 200
 201 static void
 202 fd_fragtex_set_sampler_views(struct pipe_context *pctx, unsigned nr,
 203                 struct pipe_sampler_view **views)
 204 {
 205         struct fd_context *ctx = fd_context(pctx);
 206
 207         /* on a2xx, since there is a flat address space for textures/samplers,
 208          * a change in # of fragment textures/samplers will trigger patching and
 209          * re-emitting the vertex shader:
 210          */
 211         if (nr != ctx->fragtex.num_textures)
 212                 ctx->dirty |= FD_DIRTY_TEXSTATE;
 213
 214         set_sampler_views(&ctx->fragtex, nr, views);
 215         ctx->dirty |= FD_DIRTY_FRAGTEX;
 216 }
 217
 218 static void
 219 fd_verttex_sampler_states_bind(struct pipe_context *pctx,
 220                 unsigned nr, void **hwcso)
 221 {
 222         struct fd_context *ctx = fd_context(pctx);
 223         bind_sampler_states(&ctx->verttex, nr, hwcso);
 224         ctx->dirty |= FD_DIRTY_VERTTEX;
 225 }
 226
 227
 228 static void
 229 fd_verttex_set_sampler_views(struct pipe_context *pctx, unsigned nr,
 230                 struct pipe_sampler_view **views)
 231 {
 232         struct fd_context *ctx = fd_context(pctx);
 233         set_sampler_views(&ctx->verttex, nr, views);
 234         ctx->dirty |= FD_DIRTY_VERTTEX;
 235 }
 236
 237 /* map gallium sampler-id to hw const-idx.. adreno uses a flat address
 238  * space of samplers (const-idx), so we need to map the gallium sampler-id
 239  * which is per-shader to a global const-idx space.
 240  *
 241  * Fragment shader sampler maps directly to const-idx, and vertex shader
 242  * is offset by the # of fragment shader samplers.  If the # of fragment
 243  * shader samplers changes, this shifts the vertex shader indexes.
 244  *
 245  * TODO maybe we can do frag shader 0..N  and vert shader N..0 to avoid
 246  * this??
 247  */
 248 unsigned
 249 fd_get_const_idx(struct fd_context *ctx, struct fd_texture_stateobj *tex,
 250                 unsigned samp_id)
 251 {
 252         if (tex == &ctx->fragtex)
 253                 return samp_id;
 254         return samp_id + ctx->fragtex.num_samplers;
 255 }
 256
 257 void
 258 fd_texture_init(struct pipe_context *pctx)
 259 {
 260         pctx->create_sampler_state = fd_sampler_state_create;
 261         pctx->delete_sampler_state = fd_sampler_state_delete;
 262
 263         pctx->create_sampler_view = fd_sampler_view_create;
 264         pctx->sampler_view_destroy = fd_sampler_view_destroy;
 265
 266         pctx->bind_fragment_sampler_states = fd_fragtex_sampler_states_bind;
 267         pctx->set_fragment_sampler_views = fd_fragtex_set_sampler_views;
 268
 269         pctx->bind_vertex_sampler_states = fd_verttex_sampler_states_bind;
 270         pctx->set_vertex_sampler_views = fd_verttex_set_sampler_views;
 271 }