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 #include "main/shaderapi.h"
  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                           gl_shader_stage stage)
  59 {
  60    enum pipe_shader_type shader_type = st_shader_stage_to_ptarget(stage);
  61
  62    assert(shader_type == PIPE_SHADER_VERTEX ||
  63           shader_type == PIPE_SHADER_FRAGMENT ||
  64           shader_type == PIPE_SHADER_GEOMETRY ||
  65           shader_type == PIPE_SHADER_TESS_CTRL ||
  66           shader_type == PIPE_SHADER_TESS_EVAL ||
  67           shader_type == PIPE_SHADER_COMPUTE);
  68
  69    /* update the ATI constants before rendering */
  70    if (shader_type == PIPE_SHADER_FRAGMENT && st->fp->ati_fs) {
  71       struct ati_fragment_shader *ati_fs = st->fp->ati_fs;
  72       unsigned c;
  73
  74       for (c = 0; c < MAX_NUM_FRAGMENT_CONSTANTS_ATI; c++) {
  75          if (ati_fs->LocalConstDef & (1 << c))
  76             memcpy(params->ParameterValues[c],
  77                    ati_fs->Constants[c], sizeof(GLfloat) * 4);
  78          else
  79             memcpy(params->ParameterValues[c],
  80                    st->ctx->ATIFragmentShader.GlobalConstants[c], sizeof(GLfloat) * 4);
  81       }
  82    }
  83
  84    /* update constants */
  85    if (params && params->NumParameters) {
  86       struct pipe_constant_buffer cb;
  87       const uint paramBytes = params->NumParameters * sizeof(GLfloat) * 4;
  88
  89       /* Update the constants which come from fixed-function state, such as
  90        * transformation matrices, fog factors, etc.  The rest of the values in
  91        * the parameters list are explicitly set by the user with glUniform,
  92        * glProgramParameter(), etc.
  93        */
  94       if (params->StateFlags)
  95          _mesa_load_state_parameters(st->ctx, params);
  96
  97       _mesa_shader_write_subroutine_indices(st->ctx, stage);
  98
  99       /* We always need to get a new buffer, to keep the drivers simple and
 100        * avoid gratuitous rendering synchronization.
 101        * Let's use a user buffer to avoid an unnecessary copy.
 102        */
 103       if (!st->has_user_constbuf) {
 104          cb.buffer = NULL;
 105          cb.user_buffer = NULL;
 106          u_upload_data(st->pipe->const_uploader, 0, paramBytes,
 107                        st->ctx->Const.UniformBufferOffsetAlignment,
 108                        params->ParameterValues, &cb.buffer_offset, &cb.buffer);
 109          u_upload_unmap(st->pipe->const_uploader);
 110       } else {
 111          cb.buffer = NULL;
 112          cb.user_buffer = params->ParameterValues;
 113          cb.buffer_offset = 0;
 114       }
 115       cb.buffer_size = paramBytes;
 116
 117       if (ST_DEBUG & DEBUG_CONSTANTS) {
 118          debug_printf("%s(shader=%d, numParams=%d, stateFlags=0x%x)\n",
 119                       __func__, shader_type, params->NumParameters,
 120                       params->StateFlags);
 121          _mesa_print_parameter_list(params);
 122       }
 123
 124       cso_set_constant_buffer(st->cso_context, shader_type, 0, &cb);
 125       pipe_resource_reference(&cb.buffer, NULL);
 126
 127       st->state.constants[shader_type].ptr = params->ParameterValues;
 128       st->state.constants[shader_type].size = paramBytes;
 129    }
 130    else if (st->state.constants[shader_type].ptr) {
 131       /* Unbind. */
 132       st->state.constants[shader_type].ptr = NULL;
 133       st->state.constants[shader_type].size = 0;
 134       cso_set_constant_buffer(st->cso_context, shader_type, 0, NULL);
 135    }
 136 }
 137
 138
 139 /**
 140  * Vertex shader:
 141  */
 142 static void update_vs_constants(struct st_context *st )
 143 {
 144    struct st_vertex_program *vp = st->vp;
 145    struct gl_program_parameter_list *params = vp->Base.Parameters;
 146
 147    st_upload_constants( st, params, MESA_SHADER_VERTEX );
 148 }
 149
 150
 151 const struct st_tracked_state st_update_vs_constants = {
 152    update_vs_constants                                  /* update */
 153 };
 154
 155
 156
 157 /**
 158  * Fragment shader:
 159  */
 160 static void update_fs_constants(struct st_context *st )
 161 {
 162    struct st_fragment_program *fp = st->fp;
 163    struct gl_program_parameter_list *params = fp->Base.Parameters;
 164
 165    st_upload_constants( st, params, MESA_SHADER_FRAGMENT );
 166 }
 167
 168
 169 const struct st_tracked_state st_update_fs_constants = {
 170    update_fs_constants                                  /* update */
 171 };
 172
 173 /* Geometry shader:
 174  */
 175 static void update_gs_constants(struct st_context *st )
 176 {
 177    struct st_geometry_program *gp = st->gp;
 178    struct gl_program_parameter_list *params;
 179
 180    if (gp) {
 181       params = gp->Base.Parameters;
 182       st_upload_constants( st, params, MESA_SHADER_GEOMETRY );
 183    }
 184 }
 185
 186 const struct st_tracked_state st_update_gs_constants = {
 187    update_gs_constants                                  /* update */
 188 };
 189
 190 /* Tessellation control shader:
 191  */
 192 static void update_tcs_constants(struct st_context *st )
 193 {
 194    struct st_tessctrl_program *tcp = st->tcp;
 195    struct gl_program_parameter_list *params;
 196
 197    if (tcp) {
 198       params = tcp->Base.Parameters;
 199       st_upload_constants( st, params, MESA_SHADER_TESS_CTRL );
 200    }
 201 }
 202
 203 const struct st_tracked_state st_update_tcs_constants = {
 204    update_tcs_constants                                 /* update */
 205 };
 206
 207 /* Tessellation evaluation shader:
 208  */
 209 static void update_tes_constants(struct st_context *st )
 210 {
 211    struct st_tesseval_program *tep = st->tep;
 212    struct gl_program_parameter_list *params;
 213
 214    if (tep) {
 215       params = tep->Base.Parameters;
 216       st_upload_constants( st, params, MESA_SHADER_TESS_EVAL );
 217    }
 218 }
 219
 220 const struct st_tracked_state st_update_tes_constants = {
 221    update_tes_constants                                 /* update */
 222 };
 223
 224 /* Compute shader:
 225  */
 226 static void update_cs_constants(struct st_context *st )
 227 {
 228    struct st_compute_program *cp = st->cp;
 229    struct gl_program_parameter_list *params;
 230
 231    if (cp) {
 232       params = cp->Base.Parameters;
 233       st_upload_constants( st, params, MESA_SHADER_COMPUTE );
 234    }
 235 }
 236
 237 const struct st_tracked_state st_update_cs_constants = {
 238    update_cs_constants                                  /* update */
 239 };
 240
 241 static void st_bind_ubos(struct st_context *st, struct gl_program *prog,
 242                          unsigned shader_type)
 243 {
 244    unsigned i;
 245    struct pipe_constant_buffer cb = { 0 };
 246
 247    if (!prog)
 248       return;
 249
 250    for (i = 0; i < prog->info.num_ubos; i++) {
 251       struct gl_uniform_buffer_binding *binding;
 252       struct st_buffer_object *st_obj;
 253
 254       binding =
 255          &st->ctx->UniformBufferBindings[prog->sh.UniformBlocks[i]->Binding];
 256       st_obj = st_buffer_object(binding->BufferObject);
 257
 258       cb.buffer = st_obj->buffer;
 259
 260       if (cb.buffer) {
 261          cb.buffer_offset = binding->Offset;
 262          cb.buffer_size = cb.buffer->width0 - binding->Offset;
 263
 264          /* AutomaticSize is FALSE if the buffer was set with BindBufferRange.
 265           * Take the minimum just to be sure.
 266           */
 267          if (!binding->AutomaticSize)
 268             cb.buffer_size = MIN2(cb.buffer_size, (unsigned) binding->Size);
 269       }
 270       else {
 271          cb.buffer_offset = 0;
 272          cb.buffer_size = 0;
 273       }
 274
 275       cso_set_constant_buffer(st->cso_context, shader_type, 1 + i, &cb);
 276    }
 277 }
 278
 279 static void bind_vs_ubos(struct st_context *st)
 280 {
 281    struct gl_program *prog =
 282       st->ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
 283
 284    st_bind_ubos(st, prog, PIPE_SHADER_VERTEX);
 285 }
 286
 287 const struct st_tracked_state st_bind_vs_ubos = {
 288    bind_vs_ubos
 289 };
 290
 291 static void bind_fs_ubos(struct st_context *st)
 292 {
 293    struct gl_program *prog =
 294       st->ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT];
 295
 296    st_bind_ubos(st, prog, PIPE_SHADER_FRAGMENT);
 297 }
 298
 299 const struct st_tracked_state st_bind_fs_ubos = {
 300    bind_fs_ubos
 301 };
 302
 303 static void bind_gs_ubos(struct st_context *st)
 304 {
 305    struct gl_program *prog =
 306       st->ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY];
 307
 308    st_bind_ubos(st, prog, PIPE_SHADER_GEOMETRY);
 309 }
 310
 311 const struct st_tracked_state st_bind_gs_ubos = {
 312    bind_gs_ubos
 313 };
 314
 315 static void bind_tcs_ubos(struct st_context *st)
 316 {
 317    struct gl_program *prog =
 318       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_CTRL];
 319
 320    st_bind_ubos(st, prog, PIPE_SHADER_TESS_CTRL);
 321 }
 322
 323 const struct st_tracked_state st_bind_tcs_ubos = {
 324    bind_tcs_ubos
 325 };
 326
 327 static void bind_tes_ubos(struct st_context *st)
 328 {
 329    struct gl_program *prog =
 330       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL];
 331
 332    st_bind_ubos(st, prog, PIPE_SHADER_TESS_EVAL);
 333 }
 334
 335 const struct st_tracked_state st_bind_tes_ubos = {
 336    bind_tes_ubos
 337 };
 338
 339 static void bind_cs_ubos(struct st_context *st)
 340 {
 341    struct gl_program *prog =
 342       st->ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
 343
 344    st_bind_ubos(st, prog, PIPE_SHADER_COMPUTE);
 345 }
 346
 347 const struct st_tracked_state st_bind_cs_ubos = {
 348    bind_cs_ubos
 349 };