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
  66    /* update constants */
  67    if (params && params->NumParameters) {
  68       struct pipe_constant_buffer cb;
  69       const uint paramBytes = params->NumParameters * sizeof(GLfloat) * 4;
  70
  71       /* Update the constants which come from fixed-function state, such as
  72        * transformation matrices, fog factors, etc.  The rest of the values in
  73        * the parameters list are explicitly set by the user with glUniform,
  74        * glProgramParameter(), etc.
  75        */
  76       if (params->StateFlags)
  77          _mesa_load_state_parameters(st->ctx, params);
  78
  79       /* We always need to get a new buffer, to keep the drivers simple and
  80        * avoid gratuitous rendering synchronization.
  81        * Let's use a user buffer to avoid an unnecessary copy.
  82        */
  83       if (st->constbuf_uploader) {
  84          cb.buffer = NULL;
  85          cb.user_buffer = NULL;
  86          u_upload_data(st->constbuf_uploader, 0, paramBytes,
  87                        params->ParameterValues, &cb.buffer_offset, &cb.buffer);
  88          u_upload_unmap(st->constbuf_uploader);
  89       } else {
  90          cb.buffer = NULL;
  91          cb.user_buffer = params->ParameterValues;
  92          cb.buffer_offset = 0;
  93       }
  94       cb.buffer_size = paramBytes;
  95
  96       if (ST_DEBUG & DEBUG_CONSTANTS) {
  97          debug_printf("%s(shader=%d, numParams=%d, stateFlags=0x%x)\n",
  98                       __func__, shader_type, params->NumParameters,
  99                       params->StateFlags);
 100          _mesa_print_parameter_list(params);
 101       }
 102
 103       cso_set_constant_buffer(st->cso_context, shader_type, 0, &cb);
 104       pipe_resource_reference(&cb.buffer, NULL);
 105
 106       st->state.constants[shader_type].ptr = params->ParameterValues;
 107       st->state.constants[shader_type].size = paramBytes;
 108    }
 109    else if (st->state.constants[shader_type].ptr) {
 110       /* Unbind. */
 111       st->state.constants[shader_type].ptr = NULL;
 112       st->state.constants[shader_type].size = 0;
 113       cso_set_constant_buffer(st->cso_context, shader_type, 0, NULL);
 114    }
 115 }
 116
 117
 118 /**
 119  * Vertex shader:
 120  */
 121 static void update_vs_constants(struct st_context *st )
 122 {
 123    struct st_vertex_program *vp = st->vp;
 124    struct gl_program_parameter_list *params = vp->Base.Base.Parameters;
 125
 126    st_upload_constants( st, params, PIPE_SHADER_VERTEX );
 127 }
 128
 129
 130 const struct st_tracked_state st_update_vs_constants = {
 131    "st_update_vs_constants",                            /* name */
 132    {                                                    /* dirty */
 133       _NEW_PROGRAM_CONSTANTS,                           /* mesa */
 134       ST_NEW_VERTEX_PROGRAM,                            /* st */
 135    },
 136    update_vs_constants                                  /* update */
 137 };
 138
 139
 140
 141 /**
 142  * Fragment shader:
 143  */
 144 static void update_fs_constants(struct st_context *st )
 145 {
 146    struct st_fragment_program *fp = st->fp;
 147    struct gl_program_parameter_list *params = fp->Base.Base.Parameters;
 148
 149    st_upload_constants( st, params, PIPE_SHADER_FRAGMENT );
 150 }
 151
 152
 153 const struct st_tracked_state st_update_fs_constants = {
 154    "st_update_fs_constants",                            /* name */
 155    {                                                    /* dirty */
 156       _NEW_PROGRAM_CONSTANTS,                           /* mesa */
 157       ST_NEW_FRAGMENT_PROGRAM,                          /* st */
 158    },
 159    update_fs_constants                                  /* update */
 160 };
 161
 162 /* Geometry shader:
 163  */
 164 static void update_gs_constants(struct st_context *st )
 165 {
 166    struct st_geometry_program *gp = st->gp;
 167    struct gl_program_parameter_list *params;
 168
 169    if (gp) {
 170       params = gp->Base.Base.Parameters;
 171       st_upload_constants( st, params, PIPE_SHADER_GEOMETRY );
 172    }
 173 }
 174
 175 const struct st_tracked_state st_update_gs_constants = {
 176    "st_update_gs_constants",                            /* name */
 177    {                                                    /* dirty */
 178       _NEW_PROGRAM_CONSTANTS,                           /* mesa */
 179       ST_NEW_GEOMETRY_PROGRAM,                          /* st */
 180    },
 181    update_gs_constants                                  /* update */
 182 };
 183
 184 /* Tessellation control shader:
 185  */
 186 static void update_tcs_constants(struct st_context *st )
 187 {
 188    struct st_tessctrl_program *tcp = st->tcp;
 189    struct gl_program_parameter_list *params;
 190
 191    if (tcp) {
 192       params = tcp->Base.Base.Parameters;
 193       st_upload_constants( st, params, PIPE_SHADER_TESS_CTRL );
 194    }
 195 }
 196
 197 const struct st_tracked_state st_update_tcs_constants = {
 198    "st_update_tcs_constants",                           /* name */
 199    {                                                    /* dirty */
 200       _NEW_PROGRAM_CONSTANTS,                           /* mesa */
 201       ST_NEW_TESSCTRL_PROGRAM,                          /* st */
 202    },
 203    update_tcs_constants                                 /* update */
 204 };
 205
 206 /* Tessellation evaluation shader:
 207  */
 208 static void update_tes_constants(struct st_context *st )
 209 {
 210    struct st_tesseval_program *tep = st->tep;
 211    struct gl_program_parameter_list *params;
 212
 213    if (tep) {
 214       params = tep->Base.Base.Parameters;
 215       st_upload_constants( st, params, PIPE_SHADER_TESS_EVAL );
 216    }
 217 }
 218
 219 const struct st_tracked_state st_update_tes_constants = {
 220    "st_update_tes_constants",                           /* name */
 221    {                                                    /* dirty */
 222       _NEW_PROGRAM_CONSTANTS,                           /* mesa */
 223       ST_NEW_TESSEVAL_PROGRAM,                          /* st */
 224    },
 225    update_tes_constants                                 /* update */
 226 };
 227
 228 static void st_bind_ubos(struct st_context *st,
 229                            struct gl_shader *shader,
 230                            unsigned shader_type)
 231 {
 232    unsigned i;
 233    struct pipe_constant_buffer cb = { 0 };
 234
 235    if (!shader)
 236       return;
 237
 238    for (i = 0; i < shader->NumUniformBlocks; i++) {
 239       struct gl_uniform_buffer_binding *binding;
 240       struct st_buffer_object *st_obj;
 241
 242       binding = &st->ctx->UniformBufferBindings[shader->UniformBlocks[i]->Binding];
 243       st_obj = st_buffer_object(binding->BufferObject);
 244
 245       cb.buffer = st_obj->buffer;
 246
 247       if (cb.buffer) {
 248          cb.buffer_offset = binding->Offset;
 249          cb.buffer_size = cb.buffer->width0 - binding->Offset;
 250
 251          /* AutomaticSize is FALSE if the buffer was set with BindBufferRange.
 252           * Take the minimum just to be sure.
 253           */
 254          if (!binding->AutomaticSize)
 255             cb.buffer_size = MIN2(cb.buffer_size, (unsigned) binding->Size);
 256       }
 257       else {
 258          cb.buffer_offset = 0;
 259          cb.buffer_size = 0;
 260       }
 261
 262       cso_set_constant_buffer(st->cso_context, shader_type, 1 + i, &cb);
 263    }
 264 }
 265
 266 static void bind_vs_ubos(struct st_context *st)
 267 {
 268    struct gl_shader_program *prog =
 269       st->ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
 270
 271    if (!prog)
 272       return;
 273
 274    st_bind_ubos(st, prog->_LinkedShaders[MESA_SHADER_VERTEX], PIPE_SHADER_VERTEX);
 275 }
 276
 277 const struct st_tracked_state st_bind_vs_ubos = {
 278    "st_bind_vs_ubos",
 279    {
 280       0,
 281       ST_NEW_VERTEX_PROGRAM | ST_NEW_UNIFORM_BUFFER,
 282    },
 283    bind_vs_ubos
 284 };
 285
 286 static void bind_fs_ubos(struct st_context *st)
 287 {
 288    struct gl_shader_program *prog =
 289       st->ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT];
 290
 291    if (!prog)
 292       return;
 293
 294    st_bind_ubos(st, prog->_LinkedShaders[MESA_SHADER_FRAGMENT], PIPE_SHADER_FRAGMENT);
 295 }
 296
 297 const struct st_tracked_state st_bind_fs_ubos = {
 298    "st_bind_fs_ubos",
 299    {
 300       0,
 301       ST_NEW_FRAGMENT_PROGRAM | ST_NEW_UNIFORM_BUFFER,
 302    },
 303    bind_fs_ubos
 304 };
 305
 306 static void bind_gs_ubos(struct st_context *st)
 307 {
 308    struct gl_shader_program *prog =
 309       st->ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY];
 310
 311    if (!prog)
 312       return;
 313
 314    st_bind_ubos(st, prog->_LinkedShaders[MESA_SHADER_GEOMETRY], PIPE_SHADER_GEOMETRY);
 315 }
 316
 317 const struct st_tracked_state st_bind_gs_ubos = {
 318    "st_bind_gs_ubos",
 319    {
 320       0,
 321       ST_NEW_GEOMETRY_PROGRAM | ST_NEW_UNIFORM_BUFFER,
 322    },
 323    bind_gs_ubos
 324 };
 325
 326 static void bind_tcs_ubos(struct st_context *st)
 327 {
 328    struct gl_shader_program *prog =
 329       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_CTRL];
 330
 331    if (!prog)
 332       return;
 333
 334    st_bind_ubos(st, prog->_LinkedShaders[MESA_SHADER_TESS_CTRL], PIPE_SHADER_TESS_CTRL);
 335 }
 336
 337 const struct st_tracked_state st_bind_tcs_ubos = {
 338    "st_bind_tcs_ubos",
 339    {
 340       0,
 341       ST_NEW_TESSCTRL_PROGRAM | ST_NEW_UNIFORM_BUFFER,
 342    },
 343    bind_tcs_ubos
 344 };
 345
 346 static void bind_tes_ubos(struct st_context *st)
 347 {
 348    struct gl_shader_program *prog =
 349       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL];
 350
 351    if (!prog)
 352       return;
 353
 354    st_bind_ubos(st, prog->_LinkedShaders[MESA_SHADER_TESS_EVAL], PIPE_SHADER_TESS_EVAL);
 355 }
 356
 357 const struct st_tracked_state st_bind_tes_ubos = {
 358    "st_bind_tes_ubos",
 359    {
 360       0,
 361       ST_NEW_TESSEVAL_PROGRAM | ST_NEW_UNIFORM_BUFFER,
 362    },
 363    bind_tes_ubos
 364 };