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_linked_shader *shader,
  49               enum pipe_shader_type 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 =
  62          &st->ctx->ImageUnits[shader->Program->sh.ImageUnits[i]];
  63       struct st_texture_object *stObj = st_texture_object(u->TexObj);
  64       struct pipe_image_view *img = &images[i];
  65
  66       if (!_mesa_is_image_unit_valid(st->ctx, u) ||
  67           !st_finalize_texture(st->ctx, st->pipe, u->TexObj) ||
  68           !stObj->pt) {
  69          memset(img, 0, sizeof(*img));
  70          continue;
  71       }
  72
  73       img->resource = stObj->pt;
  74       img->format = st_mesa_format_to_pipe_format(st, u->_ActualFormat);
  75
  76       switch (u->Access) {
  77       case GL_READ_ONLY:
  78          img->access = PIPE_IMAGE_ACCESS_READ;
  79          break;
  80       case GL_WRITE_ONLY:
  81          img->access = PIPE_IMAGE_ACCESS_WRITE;
  82          break;
  83       case GL_READ_WRITE:
  84          img->access = PIPE_IMAGE_ACCESS_READ_WRITE;
  85          break;
  86       default:
  87          unreachable("bad gl_image_unit::Access");
  88       }
  89
  90       if (stObj->pt->target == PIPE_BUFFER) {
  91          unsigned base, size;
  92
  93          base = stObj->base.BufferOffset;
  94          assert(base < stObj->pt->width0);
  95          size = MIN2(stObj->pt->width0 - base, (unsigned)stObj->base.BufferSize);
  96
  97          img->u.buf.offset = base;
  98          img->u.buf.size = size;
  99       } else {
 100          img->u.tex.level = u->Level + stObj->base.MinLevel;
 101          if (stObj->pt->target == PIPE_TEXTURE_3D) {
 102             if (u->Layered) {
 103                img->u.tex.first_layer = 0;
 104                img->u.tex.last_layer = u_minify(stObj->pt->depth0, img->u.tex.level) - 1;
 105             } else {
 106                img->u.tex.first_layer = u->_Layer;
 107                img->u.tex.last_layer = u->_Layer;
 108             }
 109          } else {
 110             img->u.tex.first_layer = u->_Layer + stObj->base.MinLayer;
 111             img->u.tex.last_layer = u->_Layer + stObj->base.MinLayer;
 112             if (u->Layered && img->resource->array_size > 1) {
 113                if (stObj->base.Immutable)
 114                   img->u.tex.last_layer += stObj->base.NumLayers - 1;
 115                else
 116                   img->u.tex.last_layer += img->resource->array_size - 1;
 117             }
 118          }
 119       }
 120    }
 121    cso_set_shader_images(st->cso_context, shader_type, 0, shader->NumImages,
 122                          images);
 123    /* clear out any stale shader images */
 124    if (shader->NumImages < c->MaxImageUniforms)
 125       cso_set_shader_images(
 126             st->cso_context, shader_type,
 127             shader->NumImages,
 128             c->MaxImageUniforms - shader->NumImages,
 129             NULL);
 130 }
 131
 132 static void bind_vs_images(struct st_context *st)
 133 {
 134    struct gl_shader_program *prog =
 135       st->ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
 136
 137    if (!prog)
 138       return;
 139
 140    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_VERTEX], PIPE_SHADER_VERTEX);
 141 }
 142
 143 const struct st_tracked_state st_bind_vs_images = {
 144    bind_vs_images
 145 };
 146
 147 static void bind_fs_images(struct st_context *st)
 148 {
 149    struct gl_shader_program *prog =
 150       st->ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT];
 151
 152    if (!prog)
 153       return;
 154
 155    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_FRAGMENT], PIPE_SHADER_FRAGMENT);
 156 }
 157
 158 const struct st_tracked_state st_bind_fs_images = {
 159    bind_fs_images
 160 };
 161
 162 static void bind_gs_images(struct st_context *st)
 163 {
 164    struct gl_shader_program *prog =
 165       st->ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY];
 166
 167    if (!prog)
 168       return;
 169
 170    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_GEOMETRY], PIPE_SHADER_GEOMETRY);
 171 }
 172
 173 const struct st_tracked_state st_bind_gs_images = {
 174    bind_gs_images
 175 };
 176
 177 static void bind_tcs_images(struct st_context *st)
 178 {
 179    struct gl_shader_program *prog =
 180       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_CTRL];
 181
 182    if (!prog)
 183       return;
 184
 185    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_TESS_CTRL], PIPE_SHADER_TESS_CTRL);
 186 }
 187
 188 const struct st_tracked_state st_bind_tcs_images = {
 189    bind_tcs_images
 190 };
 191
 192 static void bind_tes_images(struct st_context *st)
 193 {
 194    struct gl_shader_program *prog =
 195       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL];
 196
 197    if (!prog)
 198       return;
 199
 200    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_TESS_EVAL], PIPE_SHADER_TESS_EVAL);
 201 }
 202
 203 const struct st_tracked_state st_bind_tes_images = {
 204    bind_tes_images
 205 };
 206
 207 static void bind_cs_images(struct st_context *st)
 208 {
 209    struct gl_shader_program *prog =
 210       st->ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
 211
 212    if (!prog)
 213       return;
 214
 215    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_COMPUTE], PIPE_SHADER_COMPUTE);
 216 }
 217
 218 const struct st_tracked_state st_bind_cs_images = {
 219    bind_cs_images
 220 };