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               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
  92          base = stObj->base.BufferOffset;
  93          assert(base < stObj->pt->width0);
  94          size = MIN2(stObj->pt->width0 - base, (unsigned)stObj->base.BufferSize);
  95
  96          img->u.buf.offset = base;
  97          img->u.buf.size = size;
  98       } else {
  99          img->u.tex.level = u->Level + stObj->base.MinLevel;
 100          if (stObj->pt->target == PIPE_TEXTURE_3D) {
 101             if (u->Layered) {
 102                img->u.tex.first_layer = 0;
 103                img->u.tex.last_layer = u_minify(stObj->pt->depth0, img->u.tex.level) - 1;
 104             } else {
 105                img->u.tex.first_layer = u->_Layer;
 106                img->u.tex.last_layer = u->_Layer;
 107             }
 108          } else {
 109             img->u.tex.first_layer = u->_Layer + stObj->base.MinLayer;
 110             img->u.tex.last_layer = u->_Layer + stObj->base.MinLayer;
 111             if (u->Layered && img->resource->array_size > 1) {
 112                if (stObj->base.Immutable)
 113                   img->u.tex.last_layer += stObj->base.NumLayers - 1;
 114                else
 115                   img->u.tex.last_layer += img->resource->array_size - 1;
 116             }
 117          }
 118       }
 119    }
 120    cso_set_shader_images(st->cso_context, shader_type, 0, shader->NumImages,
 121                          images);
 122    /* clear out any stale shader images */
 123    if (shader->NumImages < c->MaxImageUniforms)
 124       cso_set_shader_images(
 125             st->cso_context, shader_type,
 126             shader->NumImages,
 127             c->MaxImageUniforms - shader->NumImages,
 128             NULL);
 129 }
 130
 131 static void bind_vs_images(struct st_context *st)
 132 {
 133    struct gl_shader_program *prog =
 134       st->ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
 135
 136    if (!prog)
 137       return;
 138
 139    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_VERTEX], PIPE_SHADER_VERTEX);
 140 }
 141
 142 const struct st_tracked_state st_bind_vs_images = {
 143    bind_vs_images
 144 };
 145
 146 static void bind_fs_images(struct st_context *st)
 147 {
 148    struct gl_shader_program *prog =
 149       st->ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT];
 150
 151    if (!prog)
 152       return;
 153
 154    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_FRAGMENT], PIPE_SHADER_FRAGMENT);
 155 }
 156
 157 const struct st_tracked_state st_bind_fs_images = {
 158    bind_fs_images
 159 };
 160
 161 static void bind_gs_images(struct st_context *st)
 162 {
 163    struct gl_shader_program *prog =
 164       st->ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY];
 165
 166    if (!prog)
 167       return;
 168
 169    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_GEOMETRY], PIPE_SHADER_GEOMETRY);
 170 }
 171
 172 const struct st_tracked_state st_bind_gs_images = {
 173    bind_gs_images
 174 };
 175
 176 static void bind_tcs_images(struct st_context *st)
 177 {
 178    struct gl_shader_program *prog =
 179       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_CTRL];
 180
 181    if (!prog)
 182       return;
 183
 184    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_TESS_CTRL], PIPE_SHADER_TESS_CTRL);
 185 }
 186
 187 const struct st_tracked_state st_bind_tcs_images = {
 188    bind_tcs_images
 189 };
 190
 191 static void bind_tes_images(struct st_context *st)
 192 {
 193    struct gl_shader_program *prog =
 194       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL];
 195
 196    if (!prog)
 197       return;
 198
 199    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_TESS_EVAL], PIPE_SHADER_TESS_EVAL);
 200 }
 201
 202 const struct st_tracked_state st_bind_tes_images = {
 203    bind_tes_images
 204 };
 205
 206 static void bind_cs_images(struct st_context *st)
 207 {
 208    struct gl_shader_program *prog =
 209       st->ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
 210
 211    if (!prog)
 212       return;
 213
 214    st_bind_images(st, prog->_LinkedShaders[MESA_SHADER_COMPUTE], PIPE_SHADER_COMPUTE);
 215 }
 216
 217 const struct st_tracked_state st_bind_cs_images = {
 218    bind_cs_images
 219 };