src/mesa/state_tracker/st_atom.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include <stdio.h>
  30 #include "main/glheader.h"
  31 #include "main/context.h"
  32
  33 #include "pipe/p_defines.h"
  34 #include "st_context.h"
  35 #include "st_atom.h"
  36 #include "st_program.h"
  37 #include "st_manager.h"
  38
  39
  40 /**
  41  * This is used to initialize st->render_atoms[].
  42  */
  43 static const struct st_tracked_state *render_atoms[] =
  44 {
  45    &st_update_depth_stencil_alpha,
  46    &st_update_clip,
  47
  48    &st_update_fp,
  49    &st_update_gp,
  50    &st_update_tep,
  51    &st_update_tcp,
  52    &st_update_vp,
  53
  54    &st_update_rasterizer,
  55    &st_update_polygon_stipple,
  56    &st_update_viewport,
  57    &st_update_scissor,
  58    &st_update_blend,
  59    &st_update_vertex_texture,
  60    &st_update_fragment_texture,
  61    &st_update_geometry_texture,
  62    &st_update_tessctrl_texture,
  63    &st_update_tesseval_texture,
  64    &st_update_sampler, /* depends on update_*_texture for swizzle */
  65    &st_bind_vs_images,
  66    &st_bind_tcs_images,
  67    &st_bind_tes_images,
  68    &st_bind_gs_images,
  69    &st_bind_fs_images,
  70    &st_update_framebuffer, /* depends on update_*_texture and bind_*_images */
  71    &st_update_msaa,
  72    &st_update_sample_shading,
  73    &st_update_vs_constants,
  74    &st_update_tcs_constants,
  75    &st_update_tes_constants,
  76    &st_update_gs_constants,
  77    &st_update_fs_constants,
  78    &st_bind_vs_ubos,
  79    &st_bind_tcs_ubos,
  80    &st_bind_tes_ubos,
  81    &st_bind_fs_ubos,
  82    &st_bind_gs_ubos,
  83    &st_bind_vs_atomics,
  84    &st_bind_tcs_atomics,
  85    &st_bind_tes_atomics,
  86    &st_bind_fs_atomics,
  87    &st_bind_gs_atomics,
  88    &st_bind_vs_ssbos,
  89    &st_bind_tcs_ssbos,
  90    &st_bind_tes_ssbos,
  91    &st_bind_fs_ssbos,
  92    &st_bind_gs_ssbos,
  93    &st_update_pixel_transfer,
  94    &st_update_tess,
  95
  96    /* this must be done after the vertex program update */
  97    &st_update_array
  98 };
  99
 100
 101 /**
 102  * This is used to initialize st->compute_atoms[].
 103  */
 104 static const struct st_tracked_state *compute_atoms[] =
 105 {
 106    &st_update_cp,
 107    &st_update_compute_texture,
 108    &st_update_sampler, /* depends on update_compute_texture for swizzle */
 109    &st_update_cs_constants,
 110    &st_bind_cs_ubos,
 111    &st_bind_cs_atomics,
 112    &st_bind_cs_ssbos,
 113    &st_bind_cs_images,
 114 };
 115
 116
 117 void st_init_atoms( struct st_context *st )
 118 {
 119    /* no-op */
 120 }
 121
 122
 123 void st_destroy_atoms( struct st_context *st )
 124 {
 125    /* no-op */
 126 }
 127
 128
 129
 130 static bool
 131 check_state(const struct st_state_flags *a, const struct st_state_flags *b)
 132 {
 133    return (a->mesa & b->mesa) || (a->st & b->st);
 134 }
 135
 136
 137 static void
 138 accumulate_state(struct st_state_flags *a, const struct st_state_flags *b)
 139 {
 140    a->mesa |= b->mesa;
 141    a->st |= b->st;
 142 }
 143
 144
 145 static void
 146 xor_states(struct st_state_flags *result,
 147            const struct st_state_flags *a,
 148            const struct st_state_flags *b)
 149 {
 150    result->mesa = a->mesa ^ b->mesa;
 151    result->st = a->st ^ b->st;
 152 }
 153
 154
 155 /* Too complex to figure out, just check every time:
 156  */
 157 static void check_program_state( struct st_context *st )
 158 {
 159    struct gl_context *ctx = st->ctx;
 160
 161    if (ctx->VertexProgram._Current != &st->vp->Base)
 162       st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
 163
 164    if (ctx->FragmentProgram._Current != &st->fp->Base)
 165       st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
 166
 167    if (ctx->GeometryProgram._Current != &st->gp->Base)
 168       st->dirty.st |= ST_NEW_GEOMETRY_PROGRAM;
 169 }
 170
 171 static void check_attrib_edgeflag(struct st_context *st)
 172 {
 173    const struct gl_client_array **arrays = st->ctx->Array._DrawArrays;
 174    GLboolean vertdata_edgeflags, edgeflag_culls_prims, edgeflags_enabled;
 175
 176    if (!arrays)
 177       return;
 178
 179    edgeflags_enabled = st->ctx->Polygon.FrontMode != GL_FILL ||
 180                        st->ctx->Polygon.BackMode != GL_FILL;
 181
 182    vertdata_edgeflags = edgeflags_enabled &&
 183                         arrays[VERT_ATTRIB_EDGEFLAG]->StrideB != 0;
 184    if (vertdata_edgeflags != st->vertdata_edgeflags) {
 185       st->vertdata_edgeflags = vertdata_edgeflags;
 186       st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
 187    }
 188
 189    edgeflag_culls_prims = edgeflags_enabled && !vertdata_edgeflags &&
 190                           !st->ctx->Current.Attrib[VERT_ATTRIB_EDGEFLAG][0];
 191    if (edgeflag_culls_prims != st->edgeflag_culls_prims) {
 192       st->edgeflag_culls_prims = edgeflag_culls_prims;
 193       st->dirty.st |= ST_NEW_RASTERIZER;
 194    }
 195 }
 196
 197
 198 /***********************************************************************
 199  * Update all derived state:
 200  */
 201
 202 void st_validate_state( struct st_context *st, enum st_pipeline pipeline )
 203 {
 204    const struct st_tracked_state **atoms;
 205    struct st_state_flags *state;
 206    GLuint num_atoms;
 207    GLuint i;
 208
 209    /* Get pipeline state. */
 210    switch (pipeline) {
 211     case ST_PIPELINE_RENDER:
 212       atoms     = render_atoms;
 213       num_atoms = ARRAY_SIZE(render_atoms);
 214       state     = &st->dirty;
 215       break;
 216    case ST_PIPELINE_COMPUTE:
 217       atoms     = compute_atoms;
 218       num_atoms = ARRAY_SIZE(compute_atoms);
 219       state     = &st->dirty_cp;
 220       break;
 221    default:
 222       unreachable("Invalid pipeline specified");
 223    }
 224
 225    /* Get Mesa driver state. */
 226    st->dirty.st |= st->ctx->NewDriverState;
 227    st->dirty_cp.st |= st->ctx->NewDriverState;
 228    st->ctx->NewDriverState = 0;
 229
 230    if (pipeline == ST_PIPELINE_RENDER) {
 231       check_attrib_edgeflag(st);
 232
 233       check_program_state(st);
 234
 235       st_manager_validate_framebuffers(st);
 236    }
 237
 238    if (state->st == 0 && state->mesa == 0)
 239       return;
 240
 241    /*printf("%s %x/%x\n", __func__, state->mesa, state->st);*/
 242
 243 #ifdef DEBUG
 244    if (1) {
 245 #else
 246    if (0) {
 247 #endif
 248       /* Debug version which enforces various sanity checks on the
 249        * state flags which are generated and checked to help ensure
 250        * state atoms are ordered correctly in the list.
 251        */
 252       struct st_state_flags examined, prev;
 253       memset(&examined, 0, sizeof(examined));
 254       prev = *state;
 255
 256       for (i = 0; i < num_atoms; i++) {
 257          const struct st_tracked_state *atom = atoms[i];
 258          struct st_state_flags generated;
 259
 260          /*printf("atom %s %x/%x\n", atom->name, atom->dirty.mesa, atom->dirty.st);*/
 261
 262          if (!(atom->dirty.mesa || atom->dirty.st) ||
 263              !atom->update) {
 264             printf("malformed atom %s\n", atom->name);
 265             assert(0);
 266          }
 267
 268          if (check_state(state, &atom->dirty)) {
 269             atoms[i]->update( st );
 270             /*printf("after: %x\n", atom->dirty.mesa);*/
 271          }
 272
 273          accumulate_state(&examined, &atom->dirty);
 274
 275          /* generated = (prev ^ state)
 276           * if (examined & generated)
 277           *     fail;
 278           */
 279          xor_states(&generated, &prev, state);
 280          assert(!check_state(&examined, &generated));
 281          prev = *state;
 282       }
 283       /*printf("\n");*/
 284
 285    }
 286    else {
 287       for (i = 0; i < num_atoms; i++) {
 288          if (check_state(state, &atoms[i]->dirty))
 289             atoms[i]->update( st );
 290       }
 291    }
 292
 293    memset(state, 0, sizeof(*state));
 294 }