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