src/mesa/state_tracker/st_atom_image.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2016 Ilia Mirkin. All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sub license, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial portions
  15  * of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  20  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  21  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  22  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  23  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  **************************************************************************/
  26
  27 #include "main/imports.h"
  28 #include "main/shaderimage.h"
  29 #include "program/prog_parameter.h"
  30 #include "program/prog_print.h"
  31 #include "compiler/glsl/ir_uniform.h"
  32
  33 #include "pipe/p_context.h"
  34 #include "pipe/p_defines.h"
  35 #include "util/u_inlines.h"
  36 #include "util/u_surface.h"
  37 #include "cso_cache/cso_context.h"
  38
  39 #include "st_cb_texture.h"
  40 #include "st_debug.h"
  41 #include "st_texture.h"
  42 #include "st_context.h"
  43 #include "st_atom.h"
  44 #include "st_program.h"
  45 #include "st_format.h"
  46
  47 static void
  48 st_bind_images(struct st_context *st, struct gl_shader *shader,
  49               unsigned shader_type)
  50 {
  51    unsigned i;
  52    struct pipe_image_view images[MAX_IMAGE_UNIFORMS];
  53    struct gl_program_constants *c;
  54
  55    if (!shader || !st->pipe->set_shader_images)
  56       return;
  57
  58    c = &st->ctx->Const.Program[shader->Stage];
  59
  60    for (i = 0; i < shader->NumImages; i++) {
  61       struct gl_image_unit *u = &st->ctx->ImageUnits[shader->ImageUnits[i]];
  62       struct st_texture_object *stObj = st_texture_object(u->TexObj);
  63       struct pipe_image_view *img = &images[i];
  64
  65       if (!_mesa_is_image_unit_valid(st->ctx, u) ||
  66           !st_finalize_texture(st->ctx, st->pipe, u->TexObj) ||
  67           !stObj->pt) {
  68          memset(img, 0, sizeof(*img));
  69          continue;
  70       }
  71
  72       img->resource = stObj->pt;
  73       img->format = st_mesa_format_to_pipe_format(st, u->_ActualFormat);
  74
  75       switch (u->Access) {
  76       case GL_READ_ONLY:
  77          img->access = PIPE_IMAGE_ACCESS_READ;
  78          break;
  79       case GL_WRITE_ONLY:
  80          img->access = PIPE_IMAGE_ACCESS_WRITE;
  81          break;
  82       case GL_READ_WRITE:
  83          img->access = PIPE_IMAGE_ACCESS_READ_WRITE;
  84          break;
  85       default:
  86          unreachable("bad gl_image_unit::Access");
  87       }
  88
  89       if (stObj->pt->target == PIPE_BUFFER) {
  90          unsigned base, size;
  91          unsigned f, n;
  92          const struct util_format_description *desc
  93             = util_format_description(img->format);
  94
  95          base = stObj->base.BufferOffset;
  96          assert(base < stObj->pt->width0);
  97          size = MIN2(stObj->pt->width0 - base, (unsigned)stObj->base.BufferSize);
  98
  99          f = (base / (desc->block.bits / 8)) * desc->block.width;
 100          n = (size / (desc->block.bits / 8)) * desc->block.width;
 101          assert(n > 0);
 102          img->u.buf.first_element = f;
 103          img->u.buf.last_element  = f + (n - 1);
 104       } else {
 105          img->u.tex.level = u->Level + stObj->base.MinLevel;
 106          if (stObj->pt->target == PIPE_TEXTURE_3D) {
 107             if (u->Layered) {
 108                img->u.tex.first_layer = 0;
 109                img->u.tex.last_layer = u_minify(stObj->pt->depth0, img->u.tex.level) - 1;
 110             } else {
 111                img->u.tex.first_layer = u->_Layer;
 112                img->u.tex.last_layer = u->_Layer;
 113             }
 114          } else {
 115             img->u.tex.first_layer = u->_Layer + stObj->base.MinLayer;
 116             img->u.tex.last_layer = u->_Layer + stObj->base.MinLayer;
 117             if (u->Layered && img->resource->array_size > 1) {
 118                if (stObj->base.Immutable)
 119                   img->u.tex.last_layer += stObj->base.NumLayers - 1;
 120                else
 121                   img->u.tex.last_layer += img->resource->array_size - 1;
 122             }
 123          }
 124       }
 125    }
 126    cso_set_shader_images(st->cso_context, shader_type, 0, shader->NumImages,
 127                          images);
 128    /* clear out any stale shader images */
 129    if (shader->NumImages < c->MaxImageUniforms)
 130       cso_set_shader_images(
 131             st->cso_context, shader_type,
 132             shader->NumImages,
 133             c->MaxImageUniforms - shader->NumImages,
 134             NULL);
 135 }
 136
 137 static void bind_vs_images(struct st_context *st)
 138 {
 139    struct gl_shader_program *prog =
 140       st->ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
 141
 142    if (!prog)
 143       return;
 144
 145    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_VERTEX], PIPE_SHADER_VERTEX);
 146 }
 147
 148 const struct st_tracked_state st_bind_vs_images = {
 149    "st_bind_vs_images",
 150    {
 151       _NEW_TEXTURE,
 152       ST_NEW_VERTEX_PROGRAM | ST_NEW_IMAGE_UNITS,
 153    },
 154    bind_vs_images
 155 };
 156
 157 static void bind_fs_images(struct st_context *st)
 158 {
 159    struct gl_shader_program *prog =
 160       st->ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT];
 161
 162    if (!prog)
 163       return;
 164
 165    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_FRAGMENT], PIPE_SHADER_FRAGMENT);
 166 }
 167
 168 const struct st_tracked_state st_bind_fs_images = {
 169    "st_bind_fs_images",
 170    {
 171       _NEW_TEXTURE,
 172       ST_NEW_FRAGMENT_PROGRAM | ST_NEW_IMAGE_UNITS,
 173    },
 174    bind_fs_images
 175 };
 176
 177 static void bind_gs_images(struct st_context *st)
 178 {
 179    struct gl_shader_program *prog =
 180       st->ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY];
 181
 182    if (!prog)
 183       return;
 184
 185    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_GEOMETRY], PIPE_SHADER_GEOMETRY);
 186 }
 187
 188 const struct st_tracked_state st_bind_gs_images = {
 189    "st_bind_gs_images",
 190    {
 191       _NEW_TEXTURE,
 192       ST_NEW_GEOMETRY_PROGRAM | ST_NEW_IMAGE_UNITS,
 193    },
 194    bind_gs_images
 195 };
 196
 197 static void bind_tcs_images(struct st_context *st)
 198 {
 199    struct gl_shader_program *prog =
 200       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_CTRL];
 201
 202    if (!prog)
 203       return;
 204
 205    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_TESS_CTRL], PIPE_SHADER_TESS_CTRL);
 206 }
 207
 208 const struct st_tracked_state st_bind_tcs_images = {
 209    "st_bind_tcs_images",
 210    {
 211       _NEW_TEXTURE,
 212       ST_NEW_TESSCTRL_PROGRAM | ST_NEW_IMAGE_UNITS,
 213    },
 214    bind_tcs_images
 215 };
 216
 217 static void bind_tes_images(struct st_context *st)
 218 {
 219    struct gl_shader_program *prog =
 220       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL];
 221
 222    if (!prog)
 223       return;
 224
 225    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_TESS_EVAL], PIPE_SHADER_TESS_EVAL);
 226 }
 227
 228 const struct st_tracked_state st_bind_tes_images = {
 229    "st_bind_tes_images",
 230    {
 231       _NEW_TEXTURE,
 232       ST_NEW_TESSEVAL_PROGRAM | ST_NEW_IMAGE_UNITS,
 233    },
 234    bind_tes_images
 235 };
 236
 237 static void bind_cs_images(struct st_context *st)
 238 {
 239    struct gl_shader_program *prog =
 240       st->ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
 241
 242    if (!prog)
 243       return;
 244
 245    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_COMPUTE], PIPE_SHADER_COMPUTE);
 246 }
 247
 248 const struct st_tracked_state st_bind_cs_images = {
 249    "st_bind_cs_images",
 250    {
 251       _NEW_TEXTURE,
 252       ST_NEW_COMPUTE_PROGRAM | ST_NEW_IMAGE_UNITS,
 253    },
 254    bind_cs_images
 255 };