src/mesa/main/state.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.1
   4  *
   5  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions 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 MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 /**
  27  * \file state.c
  28  * State management.
  29  *
  30  * This file manages recalculation of derived values in GLcontext.
  31  */
  32
  33
  34 #include "glheader.h"
  35 #include "mtypes.h"
  36 #include "context.h"
  37 #include "debug.h"
  38 #include "macros.h"
  39 #include "ffvertex_prog.h"
  40 #include "framebuffer.h"
  41 #include "light.h"
  42 #include "matrix.h"
  43 #if FEATURE_pixel_transfer
  44 #include "pixel.h"
  45 #endif
  46 #include "shader/program.h"
  47 #include "state.h"
  48 #include "stencil.h"
  49 #include "texenvprogram.h"
  50 #include "texobj.h"
  51 #include "texstate.h"
  52
  53
  54 static void
  55 update_separate_specular(GLcontext *ctx)
  56 {
  57    if (NEED_SECONDARY_COLOR(ctx))
  58       ctx->_TriangleCaps |= DD_SEPARATE_SPECULAR;
  59    else
  60       ctx->_TriangleCaps &= ~DD_SEPARATE_SPECULAR;
  61 }
  62
  63
  64 /**
  65  * Update state dependent on vertex arrays.
  66  */
  67 static void
  68 update_arrays( GLcontext *ctx )
  69 {
  70    GLuint i, min;
  71
  72    /* find min of _MaxElement values for all enabled arrays */
  73
  74    /* 0 */
  75    if (ctx->VertexProgram._Current
  76        && ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POS].Enabled) {
  77       min = ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POS]._MaxElement;
  78    }
  79    else if (ctx->Array.ArrayObj->Vertex.Enabled) {
  80       min = ctx->Array.ArrayObj->Vertex._MaxElement;
  81    }
  82    else {
  83       /* can't draw anything without vertex positions! */
  84       min = 0;
  85    }
  86
  87    /* 1 */
  88    if (ctx->VertexProgram._Enabled
  89        && ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_WEIGHT].Enabled) {
  90       min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_WEIGHT]._MaxElement);
  91    }
  92    /* no conventional vertex weight array */
  93
  94    /* 2 */
  95    if (ctx->VertexProgram._Enabled
  96        && ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_NORMAL].Enabled) {
  97       min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_NORMAL]._MaxElement);
  98    }
  99    else if (ctx->Array.ArrayObj->Normal.Enabled) {
 100       min = MIN2(min, ctx->Array.ArrayObj->Normal._MaxElement);
 101    }
 102
 103    /* 3 */
 104    if (ctx->VertexProgram._Enabled
 105        && ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR0].Enabled) {
 106       min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR0]._MaxElement);
 107    }
 108    else if (ctx->Array.ArrayObj->Color.Enabled) {
 109       min = MIN2(min, ctx->Array.ArrayObj->Color._MaxElement);
 110    }
 111
 112    /* 4 */
 113    if (ctx->VertexProgram._Enabled
 114        && ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR1].Enabled) {
 115       min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR1]._MaxElement);
 116    }
 117    else if (ctx->Array.ArrayObj->SecondaryColor.Enabled) {
 118       min = MIN2(min, ctx->Array.ArrayObj->SecondaryColor._MaxElement);
 119    }
 120
 121    /* 5 */
 122    if (ctx->VertexProgram._Enabled
 123        && ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_FOG].Enabled) {
 124       min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_FOG]._MaxElement);
 125    }
 126    else if (ctx->Array.ArrayObj->FogCoord.Enabled) {
 127       min = MIN2(min, ctx->Array.ArrayObj->FogCoord._MaxElement);
 128    }
 129
 130    /* 6 */
 131    if (ctx->VertexProgram._Enabled
 132        && ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Enabled) {
 133       min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR_INDEX]._MaxElement);
 134    }
 135    else if (ctx->Array.ArrayObj->Index.Enabled) {
 136       min = MIN2(min, ctx->Array.ArrayObj->Index._MaxElement);
 137    }
 138
 139
 140    /* 7 */
 141    if (ctx->VertexProgram._Enabled
 142        && ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_EDGEFLAG].Enabled) {
 143       min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_EDGEFLAG]._MaxElement);
 144    }
 145
 146    /* 8..15 */
 147    for (i = VERT_ATTRIB_TEX0; i <= VERT_ATTRIB_TEX7; i++) {
 148       if (ctx->VertexProgram._Enabled
 149           && ctx->Array.ArrayObj->VertexAttrib[i].Enabled) {
 150          min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[i]._MaxElement);
 151       }
 152       else if (i - VERT_ATTRIB_TEX0 < ctx->Const.MaxTextureCoordUnits
 153                && ctx->Array.ArrayObj->TexCoord[i - VERT_ATTRIB_TEX0].Enabled) {
 154          min = MIN2(min, ctx->Array.ArrayObj->TexCoord[i - VERT_ATTRIB_TEX0]._MaxElement);
 155       }
 156    }
 157
 158    /* 16..31 */
 159    if (ctx->VertexProgram._Current) {
 160       for (i = VERT_ATTRIB_GENERIC0; i < VERT_ATTRIB_MAX; i++) {
 161          if (ctx->Array.ArrayObj->VertexAttrib[i].Enabled) {
 162             min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[i]._MaxElement);
 163          }
 164       }
 165    }
 166
 167    if (ctx->Array.ArrayObj->EdgeFlag.Enabled) {
 168       min = MIN2(min, ctx->Array.ArrayObj->EdgeFlag._MaxElement);
 169    }
 170
 171    /* _MaxElement is one past the last legal array element */
 172    ctx->Array._MaxElement = min;
 173 }
 174
 175
 176 /**
 177  * Update the following fields:
 178  *   ctx->VertexProgram._Enabled
 179  *   ctx->FragmentProgram._Enabled
 180  *   ctx->ATIFragmentShader._Enabled
 181  * This needs to be done before texture state validation.
 182  */
 183 static void
 184 update_program_enables(GLcontext *ctx)
 185 {
 186    /* These _Enabled flags indicate if the program is enabled AND valid. */
 187    ctx->VertexProgram._Enabled = ctx->VertexProgram.Enabled
 188       && ctx->VertexProgram.Current->Base.Instructions;
 189    ctx->FragmentProgram._Enabled = ctx->FragmentProgram.Enabled
 190       && ctx->FragmentProgram.Current->Base.Instructions;
 191    ctx->ATIFragmentShader._Enabled = ctx->ATIFragmentShader.Enabled
 192       && ctx->ATIFragmentShader.Current->Instructions[0];
 193 }
 194
 195
 196 /**
 197  * Update vertex/fragment program state.  In particular, update these fields:
 198  *   ctx->VertexProgram._Current
 199  *   ctx->VertexProgram._TnlProgram,
 200  * These point to the highest priority enabled vertex/fragment program or are
 201  * NULL if fixed-function processing is to be done.
 202  *
 203  * This function needs to be called after texture state validation in case
 204  * we're generating a fragment program from fixed-function texture state.
 205  */
 206 static void
 207 update_program(GLcontext *ctx)
 208 {
 209    const struct gl_shader_program *shProg = ctx->Shader.CurrentProgram;
 210    const struct gl_vertex_program *prevVP = ctx->VertexProgram._Current;
 211    const struct gl_fragment_program *prevFP = ctx->FragmentProgram._Current;
 212
 213    /*
 214     * Set the ctx->VertexProgram._Current and ctx->FragmentProgram._Current
 215     * pointers to the programs that should be used for rendering.  If either
 216     * is NULL, use fixed-function code paths.
 217     *
 218     * These programs may come from several sources.  The priority is as
 219     * follows:
 220     *   1. OpenGL 2.0/ARB vertex/fragment shaders
 221     *   2. ARB/NV vertex/fragment programs
 222     *   3. Programs derived from fixed-function state.
 223     *
 224     * Note: it's possible for a vertex shader to get used with a fragment
 225     * program (and vice versa) here, but in practice that shouldn't ever
 226     * come up, or matter.
 227     */
 228
 229    if (shProg && shProg->LinkStatus && shProg->FragmentProgram) {
 230       /* Use shader programs */
 231       _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
 232                                shProg->FragmentProgram);
 233    }
 234    else if (ctx->FragmentProgram._Enabled) {
 235       /* use user-defined vertex program */
 236       _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
 237                                ctx->FragmentProgram.Current);
 238    }
 239    else if (ctx->FragmentProgram._MaintainTexEnvProgram) {
 240       /* Use fragment program generated from fixed-function state.
 241        */
 242       _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
 243                                _mesa_get_fixed_func_fragment_program(ctx));
 244       _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._TexEnvProgram,
 245                                ctx->FragmentProgram._Current);
 246    }
 247    else {
 248       /* no fragment program */
 249       _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current, NULL);
 250    }
 251
 252    /* Examine vertex program after fragment program as
 253     * _mesa_get_fixed_func_vertex_program() needs to know active
 254     * fragprog inputs.
 255     */
 256    if (shProg && shProg->LinkStatus && shProg->VertexProgram) {
 257       /* Use shader programs */
 258       _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
 259                             shProg->VertexProgram);
 260    }
 261    else if (ctx->VertexProgram._Enabled) {
 262       /* use user-defined vertex program */
 263       _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
 264                                ctx->VertexProgram.Current);
 265    }
 266    else if (ctx->VertexProgram._MaintainTnlProgram) {
 267       /* Use vertex program generated from fixed-function state.
 268        */
 269       _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
 270                                _mesa_get_fixed_func_vertex_program(ctx));
 271       _mesa_reference_vertprog(ctx, &ctx->VertexProgram._TnlProgram,
 272                                ctx->VertexProgram._Current);
 273    }
 274    else {
 275       /* no vertex program */
 276       _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current, NULL);
 277    }
 278
 279    /* Let the driver know what's happening:
 280     */
 281    if (ctx->FragmentProgram._Current != prevFP && ctx->Driver.BindProgram) {
 282       ctx->Driver.BindProgram(ctx, GL_FRAGMENT_PROGRAM_ARB,
 283                               (struct gl_program *) ctx->FragmentProgram._Current);
 284    }
 285
 286    if (ctx->VertexProgram._Current != prevVP && ctx->Driver.BindProgram) {
 287       ctx->Driver.BindProgram(ctx, GL_VERTEX_PROGRAM_ARB,
 288                               (struct gl_program *) ctx->VertexProgram._Current);
 289    }
 290 }
 291
 292
 293 static void
 294 update_viewport_matrix(GLcontext *ctx)
 295 {
 296    const GLfloat depthMax = ctx->DrawBuffer->_DepthMaxF;
 297
 298    ASSERT(depthMax > 0);
 299
 300    /* Compute scale and bias values. This is really driver-specific
 301     * and should be maintained elsewhere if at all.
 302     * NOTE: RasterPos uses this.
 303     */
 304    _math_matrix_viewport(&ctx->Viewport._WindowMap,
 305                          ctx->Viewport.X, ctx->Viewport.Y,
 306                          ctx->Viewport.Width, ctx->Viewport.Height,
 307                          ctx->Viewport.Near, ctx->Viewport.Far,
 308                          depthMax);
 309 }
 310
 311
 312 /**
 313  * Update derived multisample state.
 314  */
 315 static void
 316 update_multisample(GLcontext *ctx)
 317 {
 318    ctx->Multisample._Enabled = GL_FALSE;
 319    if (ctx->Multisample.Enabled &&
 320        ctx->DrawBuffer &&
 321        ctx->DrawBuffer->Visual.sampleBuffers)
 322       ctx->Multisample._Enabled = GL_TRUE;
 323 }
 324
 325
 326 /**
 327  * Update derived color/blend/logicop state.
 328  */
 329 static void
 330 update_color(GLcontext *ctx)
 331 {
 332    /* This is needed to support 1.1's RGB logic ops AND
 333     * 1.0's blending logicops.
 334     */
 335    ctx->Color._LogicOpEnabled = RGBA_LOGICOP_ENABLED(ctx);
 336 }
 337
 338
 339 /*
 340  * Check polygon state and set DD_TRI_CULL_FRONT_BACK and/or DD_TRI_OFFSET
 341  * in ctx->_TriangleCaps if needed.
 342  */
 343 static void
 344 update_polygon(GLcontext *ctx)
 345 {
 346    ctx->_TriangleCaps &= ~(DD_TRI_CULL_FRONT_BACK | DD_TRI_OFFSET);
 347
 348    if (ctx->Polygon.CullFlag && ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)
 349       ctx->_TriangleCaps |= DD_TRI_CULL_FRONT_BACK;
 350
 351    if (   ctx->Polygon.OffsetPoint
 352        || ctx->Polygon.OffsetLine
 353        || ctx->Polygon.OffsetFill)
 354       ctx->_TriangleCaps |= DD_TRI_OFFSET;
 355 }
 356
 357
 358 /**
 359  * Update the ctx->_TriangleCaps bitfield.
 360  * XXX that bitfield should really go away someday!
 361  * This function must be called after other update_*() functions since
 362  * there are dependencies on some other derived values.
 363  */
 364 #if 0
 365 static void
 366 update_tricaps(GLcontext *ctx, GLbitfield new_state)
 367 {
 368    ctx->_TriangleCaps = 0;
 369
 370    /*
 371     * Points
 372     */
 373    if (1/*new_state & _NEW_POINT*/) {
 374       if (ctx->Point.SmoothFlag)
 375          ctx->_TriangleCaps |= DD_POINT_SMOOTH;
 376       if (ctx->Point.Size != 1.0F)
 377          ctx->_TriangleCaps |= DD_POINT_SIZE;
 378       if (ctx->Point._Attenuated)
 379          ctx->_TriangleCaps |= DD_POINT_ATTEN;
 380    }
 381
 382    /*
 383     * Lines
 384     */
 385    if (1/*new_state & _NEW_LINE*/) {
 386       if (ctx->Line.SmoothFlag)
 387          ctx->_TriangleCaps |= DD_LINE_SMOOTH;
 388       if (ctx->Line.StippleFlag)
 389          ctx->_TriangleCaps |= DD_LINE_STIPPLE;
 390       if (ctx->Line.Width != 1.0)
 391          ctx->_TriangleCaps |= DD_LINE_WIDTH;
 392    }
 393
 394    /*
 395     * Polygons
 396     */
 397    if (1/*new_state & _NEW_POLYGON*/) {
 398       if (ctx->Polygon.SmoothFlag)
 399          ctx->_TriangleCaps |= DD_TRI_SMOOTH;
 400       if (ctx->Polygon.StippleFlag)
 401          ctx->_TriangleCaps |= DD_TRI_STIPPLE;
 402       if (ctx->Polygon.FrontMode != GL_FILL
 403           || ctx->Polygon.BackMode != GL_FILL)
 404          ctx->_TriangleCaps |= DD_TRI_UNFILLED;
 405       if (ctx->Polygon.CullFlag
 406           && ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)
 407          ctx->_TriangleCaps |= DD_TRI_CULL_FRONT_BACK;
 408       if (ctx->Polygon.OffsetPoint ||
 409           ctx->Polygon.OffsetLine ||
 410           ctx->Polygon.OffsetFill)
 411          ctx->_TriangleCaps |= DD_TRI_OFFSET;
 412    }
 413
 414    /*
 415     * Lighting and shading
 416     */
 417    if (ctx->Light.Enabled && ctx->Light.Model.TwoSide)
 418       ctx->_TriangleCaps |= DD_TRI_LIGHT_TWOSIDE;
 419    if (ctx->Light.ShadeModel == GL_FLAT)
 420       ctx->_TriangleCaps |= DD_FLATSHADE;
 421    if (NEED_SECONDARY_COLOR(ctx))
 422       ctx->_TriangleCaps |= DD_SEPARATE_SPECULAR;
 423
 424    /*
 425     * Stencil
 426     */
 427    if (ctx->Stencil._TestTwoSide)
 428       ctx->_TriangleCaps |= DD_TRI_TWOSTENCIL;
 429 }
 430 #endif
 431
 432
 433 /**
 434  * Compute derived GL state.
 435  * If __GLcontextRec::NewState is non-zero then this function \b must
 436  * be called before rendering anything.
 437  *
 438  * Calls dd_function_table::UpdateState to perform any internal state
 439  * management necessary.
 440  *
 441  * \sa _mesa_update_modelview_project(), _mesa_update_texture(),
 442  * _mesa_update_buffer_bounds(),
 443  * _mesa_update_lighting() and _mesa_update_tnl_spaces().
 444  */
 445 void
 446 _mesa_update_state_locked( GLcontext *ctx )
 447 {
 448    GLbitfield new_state = ctx->NewState;
 449    GLbitfield prog_flags = _NEW_PROGRAM;
 450
 451    if (MESA_VERBOSE & VERBOSE_STATE)
 452       _mesa_print_state("_mesa_update_state", new_state);
 453
 454    /* Determine which state flags effect vertex/fragment program state */
 455    if (ctx->FragmentProgram._MaintainTexEnvProgram) {
 456       prog_flags |= (_NEW_TEXTURE | _NEW_FOG | _DD_NEW_SEPARATE_SPECULAR);
 457    }
 458    if (ctx->VertexProgram._MaintainTnlProgram) {
 459       prog_flags |= (_NEW_ARRAY | _NEW_TEXTURE | _NEW_TEXTURE_MATRIX |
 460                      _NEW_TRANSFORM | _NEW_POINT |
 461                      _NEW_FOG | _NEW_LIGHT |
 462                      _MESA_NEW_NEED_EYE_COORDS);
 463    }
 464
 465    /*
 466     * Now update derived state info
 467     */
 468
 469    if (new_state & prog_flags)
 470       update_program_enables( ctx );
 471
 472    if (new_state & (_NEW_MODELVIEW|_NEW_PROJECTION))
 473       _mesa_update_modelview_project( ctx, new_state );
 474
 475    if (new_state & (_NEW_PROGRAM|_NEW_TEXTURE|_NEW_TEXTURE_MATRIX))
 476       _mesa_update_texture( ctx, new_state );
 477
 478    if (new_state & (_NEW_BUFFERS | _NEW_COLOR | _NEW_PIXEL))
 479       _mesa_update_framebuffer(ctx);
 480
 481    if (new_state & (_NEW_SCISSOR | _NEW_BUFFERS | _NEW_VIEWPORT))
 482       _mesa_update_draw_buffer_bounds( ctx );
 483
 484    if (new_state & _NEW_POLYGON)
 485       update_polygon( ctx );
 486
 487    if (new_state & _NEW_LIGHT)
 488       _mesa_update_lighting( ctx );
 489
 490    if (new_state & _NEW_STENCIL)
 491       _mesa_update_stencil( ctx );
 492
 493 #if FEATURE_pixel_transfer
 494    if (new_state & _MESA_NEW_TRANSFER_STATE)
 495       _mesa_update_pixel( ctx, new_state );
 496 #endif
 497
 498    if (new_state & _DD_NEW_SEPARATE_SPECULAR)
 499       update_separate_specular( ctx );
 500
 501    if (new_state & (_NEW_ARRAY | _NEW_PROGRAM))
 502       update_arrays( ctx );
 503
 504    if (new_state & (_NEW_BUFFERS | _NEW_VIEWPORT))
 505       update_viewport_matrix(ctx);
 506
 507    if (new_state & _NEW_MULTISAMPLE)
 508       update_multisample( ctx );
 509
 510    if (new_state & _NEW_COLOR)
 511       update_color( ctx );
 512
 513 #if 0
 514    if (new_state & (_NEW_POINT | _NEW_LINE | _NEW_POLYGON | _NEW_LIGHT
 515                     | _NEW_STENCIL | _DD_NEW_SEPARATE_SPECULAR))
 516       update_tricaps( ctx, new_state );
 517 #endif
 518
 519    /* ctx->_NeedEyeCoords is now up to date.
 520     *
 521     * If the truth value of this variable has changed, update for the
 522     * new lighting space and recompute the positions of lights and the
 523     * normal transform.
 524     *
 525     * If the lighting space hasn't changed, may still need to recompute
 526     * light positions & normal transforms for other reasons.
 527     */
 528    if (new_state & _MESA_NEW_NEED_EYE_COORDS)
 529       _mesa_update_tnl_spaces( ctx, new_state );
 530
 531    if (new_state & prog_flags)
 532       update_program( ctx );
 533
 534    /*
 535     * Give the driver a chance to act upon the new_state flags.
 536     * The driver might plug in different span functions, for example.
 537     * Also, this is where the driver can invalidate the state of any
 538     * active modules (such as swrast_setup, swrast, tnl, etc).
 539     *
 540     * Set ctx->NewState to zero to avoid recursion if
 541     * Driver.UpdateState() has to call FLUSH_VERTICES().  (fixed?)
 542     */
 543    new_state = ctx->NewState;
 544    ctx->NewState = 0;
 545    ctx->Driver.UpdateState(ctx, new_state);
 546    ctx->Array.NewState = 0;
 547 }
 548
 549
 550 /* This is the usual entrypoint for state updates:
 551  */
 552 void
 553 _mesa_update_state( GLcontext *ctx )
 554 {
 555    _mesa_lock_context_textures(ctx);
 556    _mesa_update_state_locked(ctx);
 557    _mesa_unlock_context_textures(ctx);
 558 }