src/mesa/state_tracker/st_atom_constbuf.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 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  * Authors:
  30  *   Keith Whitwell <keithw@vmware.com>
  31  *   Brian Paul
  32  */
  33
  34 #include "main/imports.h"
  35 #include "program/prog_parameter.h"
  36 #include "program/prog_print.h"
  37
  38 #include "pipe/p_context.h"
  39 #include "pipe/p_defines.h"
  40 #include "util/u_inlines.h"
  41 #include "util/u_upload_mgr.h"
  42 #include "cso_cache/cso_context.h"
  43
  44 #include "st_debug.h"
  45 #include "st_context.h"
  46 #include "st_atom.h"
  47 #include "st_atom_constbuf.h"
  48 #include "st_program.h"
  49 #include "st_cb_bufferobjects.h"
  50
  51 /**
  52  * Pass the given program parameters to the graphics pipe as a
  53  * constant buffer.
  54  * \param shader_type  either PIPE_SHADER_VERTEX or PIPE_SHADER_FRAGMENT
  55  */
  56 void st_upload_constants( struct st_context *st,
  57                           struct gl_program_parameter_list *params,
  58                           unsigned shader_type)
  59 {
  60    assert(shader_type == PIPE_SHADER_VERTEX ||
  61           shader_type == PIPE_SHADER_FRAGMENT ||
  62           shader_type == PIPE_SHADER_GEOMETRY ||
  63           shader_type == PIPE_SHADER_TESS_CTRL ||
  64           shader_type == PIPE_SHADER_TESS_EVAL ||
  65           shader_type == PIPE_SHADER_COMPUTE);
  66
  67    /* update the ATI constants before rendering */
  68    if (shader_type == PIPE_SHADER_FRAGMENT && st->fp->ati_fs) {
  69       struct ati_fragment_shader *ati_fs = st->fp->ati_fs;
  70       unsigned c;
  71
  72       for (c = 0; c < MAX_NUM_FRAGMENT_CONSTANTS_ATI; c++) {
  73          if (ati_fs->LocalConstDef & (1 << c))
  74             memcpy(params->ParameterValues[c],
  75                    ati_fs->Constants[c], sizeof(GLfloat) * 4);
  76          else
  77             memcpy(params->ParameterValues[c],
  78                    st->ctx->ATIFragmentShader.GlobalConstants[c], sizeof(GLfloat) * 4);
  79       }
  80    }
  81
  82    /* update constants */
  83    if (params && params->NumParameters) {
  84       struct pipe_constant_buffer cb;
  85       const uint paramBytes = params->NumParameters * sizeof(GLfloat) * 4;
  86
  87       /* Update the constants which come from fixed-function state, such as
  88        * transformation matrices, fog factors, etc.  The rest of the values in
  89        * the parameters list are explicitly set by the user with glUniform,
  90        * glProgramParameter(), etc.
  91        */
  92       if (params->StateFlags)
  93          _mesa_load_state_parameters(st->ctx, params);
  94
  95       /* We always need to get a new buffer, to keep the drivers simple and
  96        * avoid gratuitous rendering synchronization.
  97        * Let's use a user buffer to avoid an unnecessary copy.
  98        */
  99       if (st->constbuf_uploader) {
 100          cb.buffer = NULL;
 101          cb.user_buffer = NULL;
 102          u_upload_data(st->constbuf_uploader, 0, paramBytes,
 103                        st->ctx->Const.UniformBufferOffsetAlignment,
 104                        params->ParameterValues, &cb.buffer_offset, &cb.buffer);
 105          u_upload_unmap(st->constbuf_uploader);
 106       } else {
 107          cb.buffer = NULL;
 108          cb.user_buffer = params->ParameterValues;
 109          cb.buffer_offset = 0;
 110       }
 111       cb.buffer_size = paramBytes;
 112
 113       if (ST_DEBUG & DEBUG_CONSTANTS) {
 114          debug_printf("%s(shader=%d, numParams=%d, stateFlags=0x%x)\n",
 115                       __func__, shader_type, params->NumParameters,
 116                       params->StateFlags);
 117          _mesa_print_parameter_list(params);
 118       }
 119
 120       cso_set_constant_buffer(st->cso_context, shader_type, 0, &cb);
 121       pipe_resource_reference(&cb.buffer, NULL);
 122
 123       st->state.constants[shader_type].ptr = params->ParameterValues;
 124       st->state.constants[shader_type].size = paramBytes;
 125    }
 126    else if (st->state.constants[shader_type].ptr) {
 127       /* Unbind. */
 128       st->state.constants[shader_type].ptr = NULL;
 129       st->state.constants[shader_type].size = 0;
 130       cso_set_constant_buffer(st->cso_context, shader_type, 0, NULL);
 131    }
 132 }
 133
 134
 135 /**
 136  * Vertex shader:
 137  */
 138 static void update_vs_constants(struct st_context *st )
 139 {
 140    struct st_vertex_program *vp = st->vp;
 141    struct gl_program_parameter_list *params = vp->Base.Base.Parameters;
 142
 143    st_upload_constants( st, params, PIPE_SHADER_VERTEX );
 144 }
 145
 146
 147 const struct st_tracked_state st_update_vs_constants = {
 148    "st_update_vs_constants",                            /* name */
 149    {                                                    /* dirty */
 150       _NEW_PROGRAM_CONSTANTS,                           /* mesa */
 151       ST_NEW_VERTEX_PROGRAM,                            /* st */
 152    },
 153    update_vs_constants                                  /* update */
 154 };
 155
 156
 157
 158 /**
 159  * Fragment shader:
 160  */
 161 static void update_fs_constants(struct st_context *st )
 162 {
 163    struct st_fragment_program *fp = st->fp;
 164    struct gl_program_parameter_list *params = fp->Base.Base.Parameters;
 165
 166    st_upload_constants( st, params, PIPE_SHADER_FRAGMENT );
 167 }
 168
 169
 170 const struct st_tracked_state st_update_fs_constants = {
 171    "st_update_fs_constants",                            /* name */
 172    {                                                    /* dirty */
 173       _NEW_PROGRAM_CONSTANTS,                           /* mesa */
 174       ST_NEW_FRAGMENT_PROGRAM,                          /* st */
 175    },
 176    update_fs_constants                                  /* update */
 177 };
 178
 179 /* Geometry shader:
 180  */
 181 static void update_gs_constants(struct st_context *st )
 182 {
 183    struct st_geometry_program *gp = st->gp;
 184    struct gl_program_parameter_list *params;
 185
 186    if (gp) {
 187       params = gp->Base.Base.Parameters;
 188       st_upload_constants( st, params, PIPE_SHADER_GEOMETRY );
 189    }
 190 }
 191
 192 const struct st_tracked_state st_update_gs_constants = {
 193    "st_update_gs_constants",                            /* name */
 194    {                                                    /* dirty */
 195       _NEW_PROGRAM_CONSTANTS,                           /* mesa */
 196       ST_NEW_GEOMETRY_PROGRAM,                          /* st */
 197    },
 198    update_gs_constants                                  /* update */
 199 };
 200
 201 /* Tessellation control shader:
 202  */
 203 static void update_tcs_constants(struct st_context *st )
 204 {
 205    struct st_tessctrl_program *tcp = st->tcp;
 206    struct gl_program_parameter_list *params;
 207
 208    if (tcp) {
 209       params = tcp->Base.Base.Parameters;
 210       st_upload_constants( st, params, PIPE_SHADER_TESS_CTRL );
 211    }
 212 }
 213
 214 const struct st_tracked_state st_update_tcs_constants = {
 215    "st_update_tcs_constants",                           /* name */
 216    {                                                    /* dirty */
 217       _NEW_PROGRAM_CONSTANTS,                           /* mesa */
 218       ST_NEW_TESSCTRL_PROGRAM,                          /* st */
 219    },
 220    update_tcs_constants                                 /* update */
 221 };
 222
 223 /* Tessellation evaluation shader:
 224  */
 225 static void update_tes_constants(struct st_context *st )
 226 {
 227    struct st_tesseval_program *tep = st->tep;
 228    struct gl_program_parameter_list *params;
 229
 230    if (tep) {
 231       params = tep->Base.Base.Parameters;
 232       st_upload_constants( st, params, PIPE_SHADER_TESS_EVAL );
 233    }
 234 }
 235
 236 const struct st_tracked_state st_update_tes_constants = {
 237    "st_update_tes_constants",                           /* name */
 238    {                                                    /* dirty */
 239       _NEW_PROGRAM_CONSTANTS,                           /* mesa */
 240       ST_NEW_TESSEVAL_PROGRAM,                          /* st */
 241    },
 242    update_tes_constants                                 /* update */
 243 };
 244
 245 /* Compute shader:
 246  */
 247 static void update_cs_constants(struct st_context *st )
 248 {
 249    struct st_compute_program *cp = st->cp;
 250    struct gl_program_parameter_list *params;
 251
 252    if (cp) {
 253       params = cp->Base.Base.Parameters;
 254       st_upload_constants( st, params, PIPE_SHADER_COMPUTE );
 255    }
 256 }
 257
 258 const struct st_tracked_state st_update_cs_constants = {
 259    "st_update_cs_constants",                            /* name */
 260    {                                                    /* dirty */
 261       _NEW_PROGRAM_CONSTANTS,                           /* mesa */
 262       ST_NEW_COMPUTE_PROGRAM,                           /* st */
 263    },
 264    update_cs_constants                                  /* update */
 265 };
 266
 267 static void st_bind_ubos(struct st_context *st,
 268                            struct gl_linked_shader *shader,
 269                            unsigned shader_type)
 270 {
 271    unsigned i;
 272    struct pipe_constant_buffer cb = { 0 };
 273
 274    if (!shader)
 275       return;
 276
 277    for (i = 0; i < shader->NumUniformBlocks; i++) {
 278       struct gl_uniform_buffer_binding *binding;
 279       struct st_buffer_object *st_obj;
 280
 281       binding = &st->ctx->UniformBufferBindings[shader->UniformBlocks[i]->Binding];
 282       st_obj = st_buffer_object(binding->BufferObject);
 283
 284       cb.buffer = st_obj->buffer;
 285
 286       if (cb.buffer) {
 287          cb.buffer_offset = binding->Offset;
 288          cb.buffer_size = cb.buffer->width0 - binding->Offset;
 289
 290          /* AutomaticSize is FALSE if the buffer was set with BindBufferRange.
 291           * Take the minimum just to be sure.
 292           */
 293          if (!binding->AutomaticSize)
 294             cb.buffer_size = MIN2(cb.buffer_size, (unsigned) binding->Size);
 295       }
 296       else {
 297          cb.buffer_offset = 0;
 298          cb.buffer_size = 0;
 299       }
 300
 301       cso_set_constant_buffer(st->cso_context, shader_type, 1 + i, &cb);
 302    }
 303 }
 304
 305 static void bind_vs_ubos(struct st_context *st)
 306 {
 307    struct gl_shader_program *prog =
 308       st->ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
 309
 310    if (!prog)
 311       return;
 312
 313    st_bind_ubos(st, prog->_LinkedShaders[MESA_SHADER_VERTEX], PIPE_SHADER_VERTEX);
 314 }
 315
 316 const struct st_tracked_state st_bind_vs_ubos = {
 317    "st_bind_vs_ubos",
 318    {
 319       0,
 320       ST_NEW_VERTEX_PROGRAM | ST_NEW_UNIFORM_BUFFER,
 321    },
 322    bind_vs_ubos
 323 };
 324
 325 static void bind_fs_ubos(struct st_context *st)
 326 {
 327    struct gl_shader_program *prog =
 328       st->ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT];
 329
 330    if (!prog)
 331       return;
 332
 333    st_bind_ubos(st, prog->_LinkedShaders[MESA_SHADER_FRAGMENT], PIPE_SHADER_FRAGMENT);
 334 }
 335
 336 const struct st_tracked_state st_bind_fs_ubos = {
 337    "st_bind_fs_ubos",
 338    {
 339       0,
 340       ST_NEW_FRAGMENT_PROGRAM | ST_NEW_UNIFORM_BUFFER,
 341    },
 342    bind_fs_ubos
 343 };
 344
 345 static void bind_gs_ubos(struct st_context *st)
 346 {
 347    struct gl_shader_program *prog =
 348       st->ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY];
 349
 350    if (!prog)
 351       return;
 352
 353    st_bind_ubos(st, prog->_LinkedShaders[MESA_SHADER_GEOMETRY], PIPE_SHADER_GEOMETRY);
 354 }
 355
 356 const struct st_tracked_state st_bind_gs_ubos = {
 357    "st_bind_gs_ubos",
 358    {
 359       0,
 360       ST_NEW_GEOMETRY_PROGRAM | ST_NEW_UNIFORM_BUFFER,
 361    },
 362    bind_gs_ubos
 363 };
 364
 365 static void bind_tcs_ubos(struct st_context *st)
 366 {
 367    struct gl_shader_program *prog =
 368       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_CTRL];
 369
 370    if (!prog)
 371       return;
 372
 373    st_bind_ubos(st, prog->_LinkedShaders[MESA_SHADER_TESS_CTRL], PIPE_SHADER_TESS_CTRL);
 374 }
 375
 376 const struct st_tracked_state st_bind_tcs_ubos = {
 377    "st_bind_tcs_ubos",
 378    {
 379       0,
 380       ST_NEW_TESSCTRL_PROGRAM | ST_NEW_UNIFORM_BUFFER,
 381    },
 382    bind_tcs_ubos
 383 };
 384
 385 static void bind_tes_ubos(struct st_context *st)
 386 {
 387    struct gl_shader_program *prog =
 388       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL];
 389
 390    if (!prog)
 391       return;
 392
 393    st_bind_ubos(st, prog->_LinkedShaders[MESA_SHADER_TESS_EVAL], PIPE_SHADER_TESS_EVAL);
 394 }
 395
 396 const struct st_tracked_state st_bind_tes_ubos = {
 397    "st_bind_tes_ubos",
 398    {
 399       0,
 400       ST_NEW_TESSEVAL_PROGRAM | ST_NEW_UNIFORM_BUFFER,
 401    },
 402    bind_tes_ubos
 403 };
 404
 405 static void bind_cs_ubos(struct st_context *st)
 406 {
 407    struct gl_shader_program *prog =
 408       st->ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
 409
 410    if (!prog)
 411       return;
 412
 413    st_bind_ubos(st, prog->_LinkedShaders[MESA_SHADER_COMPUTE],
 414                 PIPE_SHADER_COMPUTE);
 415 }
 416
 417 const struct st_tracked_state st_bind_cs_ubos = {
 418    "st_bind_cs_ubos",
 419    {
 420       0,
 421       ST_NEW_COMPUTE_PROGRAM | ST_NEW_UNIFORM_BUFFER,
 422    },
 423    bind_cs_ubos
 424 };