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_update_framebuffer,
  66    &st_update_msaa,
  67    &st_update_sample_shading,
  68    &st_update_vs_constants,
  69    &st_update_tcs_constants,
  70    &st_update_tes_constants,
  71    &st_update_gs_constants,
  72    &st_update_fs_constants,
  73    &st_bind_vs_ubos,
  74    &st_bind_tcs_ubos,
  75    &st_bind_tes_ubos,
  76    &st_bind_fs_ubos,
  77    &st_bind_gs_ubos,
  78    &st_bind_vs_atomics,
  79    &st_bind_tcs_atomics,
  80    &st_bind_tes_atomics,
  81    &st_bind_fs_atomics,
  82    &st_bind_gs_atomics,
  83    &st_bind_vs_ssbos,
  84    &st_bind_tcs_ssbos,
  85    &st_bind_tes_ssbos,
  86    &st_bind_fs_ssbos,
  87    &st_bind_gs_ssbos,
  88    &st_update_pixel_transfer,
  89    &st_update_tess,
  90
  91    /* this must be done after the vertex program update */
  92    &st_update_array
  93 };
  94
  95
  96 /**
  97  * This is used to initialize st->compute_atoms[].
  98  */
  99 static const struct st_tracked_state *compute_atoms[] =
 100 {
 101    /* will be updated in the next commit */
 102 };
 103
 104
 105 void st_init_atoms( struct st_context *st )
 106 {
 107    /* no-op */
 108 }
 109
 110
 111 void st_destroy_atoms( struct st_context *st )
 112 {
 113    /* no-op */
 114 }
 115
 116
 117
 118 static bool
 119 check_state(const struct st_state_flags *a, const struct st_state_flags *b)
 120 {
 121    return (a->mesa & b->mesa) || (a->st & b->st);
 122 }
 123
 124
 125 static void
 126 accumulate_state(struct st_state_flags *a, const struct st_state_flags *b)
 127 {
 128    a->mesa |= b->mesa;
 129    a->st |= b->st;
 130 }
 131
 132
 133 static void
 134 xor_states(struct st_state_flags *result,
 135            const struct st_state_flags *a,
 136            const struct st_state_flags *b)
 137 {
 138    result->mesa = a->mesa ^ b->mesa;
 139    result->st = a->st ^ b->st;
 140 }
 141
 142
 143 /* Too complex to figure out, just check every time:
 144  */
 145 static void check_program_state( struct st_context *st )
 146 {
 147    struct gl_context *ctx = st->ctx;
 148
 149    if (ctx->VertexProgram._Current != &st->vp->Base)
 150       st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
 151
 152    if (ctx->FragmentProgram._Current != &st->fp->Base)
 153       st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
 154
 155    if (ctx->GeometryProgram._Current != &st->gp->Base)
 156       st->dirty.st |= ST_NEW_GEOMETRY_PROGRAM;
 157 }
 158
 159 static void check_attrib_edgeflag(struct st_context *st)
 160 {
 161    const struct gl_client_array **arrays = st->ctx->Array._DrawArrays;
 162    GLboolean vertdata_edgeflags, edgeflag_culls_prims, edgeflags_enabled;
 163
 164    if (!arrays)
 165       return;
 166
 167    edgeflags_enabled = st->ctx->Polygon.FrontMode != GL_FILL ||
 168                        st->ctx->Polygon.BackMode != GL_FILL;
 169
 170    vertdata_edgeflags = edgeflags_enabled &&
 171                         arrays[VERT_ATTRIB_EDGEFLAG]->StrideB != 0;
 172    if (vertdata_edgeflags != st->vertdata_edgeflags) {
 173       st->vertdata_edgeflags = vertdata_edgeflags;
 174       st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
 175    }
 176
 177    edgeflag_culls_prims = edgeflags_enabled && !vertdata_edgeflags &&
 178                           !st->ctx->Current.Attrib[VERT_ATTRIB_EDGEFLAG][0];
 179    if (edgeflag_culls_prims != st->edgeflag_culls_prims) {
 180       st->edgeflag_culls_prims = edgeflag_culls_prims;
 181       st->dirty.st |= ST_NEW_RASTERIZER;
 182    }
 183 }
 184
 185
 186 /***********************************************************************
 187  * Update all derived state:
 188  */
 189
 190 void st_validate_state( struct st_context *st, enum st_pipeline pipeline )
 191 {
 192    const struct st_tracked_state **atoms;
 193    struct st_state_flags *state;
 194    GLuint num_atoms;
 195    GLuint i;
 196
 197    /* Get pipeline state. */
 198    switch (pipeline) {
 199     case ST_PIPELINE_RENDER:
 200       atoms     = render_atoms;
 201       num_atoms = ARRAY_SIZE(render_atoms);
 202       state     = &st->dirty;
 203       break;
 204    case ST_PIPELINE_COMPUTE:
 205       atoms     = compute_atoms;
 206       num_atoms = ARRAY_SIZE(compute_atoms);
 207       state     = &st->dirty_cp;
 208       break;
 209    default:
 210       unreachable("Invalid pipeline specified");
 211    }
 212
 213    /* Get Mesa driver state. */
 214    st->dirty.st |= st->ctx->NewDriverState;
 215    st->dirty_cp.st |= st->ctx->NewDriverState;
 216    st->ctx->NewDriverState = 0;
 217
 218    if (pipeline == ST_PIPELINE_RENDER) {
 219       check_attrib_edgeflag(st);
 220
 221       check_program_state(st);
 222
 223       st_manager_validate_framebuffers(st);
 224    }
 225
 226    if (state->st == 0 && state->mesa == 0)
 227       return;
 228
 229    /*printf("%s %x/%x\n", __func__, state->mesa, state->st);*/
 230
 231 #ifdef DEBUG
 232    if (1) {
 233 #else
 234    if (0) {
 235 #endif
 236       /* Debug version which enforces various sanity checks on the
 237        * state flags which are generated and checked to help ensure
 238        * state atoms are ordered correctly in the list.
 239        */
 240       struct st_state_flags examined, prev;
 241       memset(&examined, 0, sizeof(examined));
 242       prev = *state;
 243
 244       for (i = 0; i < num_atoms; i++) {
 245          const struct st_tracked_state *atom = atoms[i];
 246          struct st_state_flags generated;
 247
 248          /*printf("atom %s %x/%x\n", atom->name, atom->dirty.mesa, atom->dirty.st);*/
 249
 250          if (!(atom->dirty.mesa || atom->dirty.st) ||
 251              !atom->update) {
 252             printf("malformed atom %s\n", atom->name);
 253             assert(0);
 254          }
 255
 256          if (check_state(state, &atom->dirty)) {
 257             atoms[i]->update( st );
 258             /*printf("after: %x\n", atom->dirty.mesa);*/
 259          }
 260
 261          accumulate_state(&examined, &atom->dirty);
 262
 263          /* generated = (prev ^ state)
 264           * if (examined & generated)
 265           *     fail;
 266           */
 267          xor_states(&generated, &prev, state);
 268          assert(!check_state(&examined, &generated));
 269          prev = *state;
 270       }
 271       /*printf("\n");*/
 272
 273    }
 274    else {
 275       for (i = 0; i < num_atoms; i++) {
 276          if (check_state(state, &atoms[i]->dirty))
 277             atoms[i]->update( st );
 278       }
 279    }
 280
 281    memset(state, 0, sizeof(*state));
 282 }