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  */
  55 void st_upload_constants(struct st_context *st, struct gl_program *prog)
  56 {
  57    gl_shader_stage stage = prog->info.stage;
  58    struct gl_program_parameter_list *params = prog->Parameters;
  59    enum pipe_shader_type shader_type = pipe_shader_type_from_mesa(stage);
  60
  61    assert(shader_type == PIPE_SHADER_VERTEX ||
  62           shader_type == PIPE_SHADER_FRAGMENT ||
  63           shader_type == PIPE_SHADER_GEOMETRY ||
  64           shader_type == PIPE_SHADER_TESS_CTRL ||
  65           shader_type == PIPE_SHADER_TESS_EVAL ||
  66           shader_type == PIPE_SHADER_COMPUTE);
  67
  68    /* update the ATI constants before rendering */
  69    if (shader_type == PIPE_SHADER_FRAGMENT && st->fp->ati_fs) {
  70       struct ati_fragment_shader *ati_fs = st->fp->ati_fs;
  71       unsigned c;
  72
  73       for (c = 0; c < MAX_NUM_FRAGMENT_CONSTANTS_ATI; c++) {
  74          if (ati_fs->LocalConstDef & (1 << c))
  75             memcpy(params->ParameterValues[c],
  76                    ati_fs->Constants[c], sizeof(GLfloat) * 4);
  77          else
  78             memcpy(params->ParameterValues[c],
  79                    st->ctx->ATIFragmentShader.GlobalConstants[c], sizeof(GLfloat) * 4);
  80       }
  81    }
  82
  83    /* Make all bindless samplers/images bound texture/image units resident in
  84     * the context.
  85     */
  86    st_make_bound_samplers_resident(st, prog);
  87    st_make_bound_images_resident(st, prog);
  88
  89    /* update constants */
  90    if (params && params->NumParameters) {
  91       struct pipe_constant_buffer cb;
  92       const uint paramBytes = params->NumParameters * sizeof(GLfloat) * 4;
  93
  94       /* Update the constants which come from fixed-function state, such as
  95        * transformation matrices, fog factors, etc.  The rest of the values in
  96        * the parameters list are explicitly set by the user with glUniform,
  97        * glProgramParameter(), etc.
  98        */
  99       if (params->StateFlags)
 100          _mesa_load_state_parameters(st->ctx, params);
 101
 102       _mesa_shader_write_subroutine_indices(st->ctx, stage);
 103
 104       cb.buffer = NULL;
 105       cb.user_buffer = params->ParameterValues;
 106       cb.buffer_offset = 0;
 107       cb.buffer_size = paramBytes;
 108
 109       if (ST_DEBUG & DEBUG_CONSTANTS) {
 110          debug_printf("%s(shader=%d, numParams=%d, stateFlags=0x%x)\n",
 111                       __func__, shader_type, params->NumParameters,
 112                       params->StateFlags);
 113          _mesa_print_parameter_list(params);
 114       }
 115
 116       cso_set_constant_buffer(st->cso_context, shader_type, 0, &cb);
 117       pipe_resource_reference(&cb.buffer, NULL);
 118
 119       st->state.constants[shader_type].ptr = params->ParameterValues;
 120       st->state.constants[shader_type].size = paramBytes;
 121    }
 122    else if (st->state.constants[shader_type].ptr) {
 123       /* Unbind. */
 124       st->state.constants[shader_type].ptr = NULL;
 125       st->state.constants[shader_type].size = 0;
 126       cso_set_constant_buffer(st->cso_context, shader_type, 0, NULL);
 127    }
 128 }
 129
 130
 131 /**
 132  * Vertex shader:
 133  */
 134 void st_update_vs_constants(struct st_context *st )
 135 {
 136    st_upload_constants(st, &st->vp->Base);
 137 }
 138
 139 /**
 140  * Fragment shader:
 141  */
 142 void st_update_fs_constants(struct st_context *st )
 143 {
 144    st_upload_constants(st, &st->fp->Base);
 145 }
 146
 147
 148 /* Geometry shader:
 149  */
 150 void st_update_gs_constants(struct st_context *st )
 151 {
 152    struct st_common_program *gp = st->gp;
 153
 154    if (gp)
 155       st_upload_constants(st, &gp->Base);
 156 }
 157
 158 /* Tessellation control shader:
 159  */
 160 void st_update_tcs_constants(struct st_context *st )
 161 {
 162    struct st_common_program *tcp = st->tcp;
 163
 164    if (tcp)
 165       st_upload_constants(st, &tcp->Base);
 166 }
 167
 168 /* Tessellation evaluation shader:
 169  */
 170 void st_update_tes_constants(struct st_context *st )
 171 {
 172    struct st_common_program *tep = st->tep;
 173
 174    if (tep)
 175       st_upload_constants(st, &tep->Base);
 176 }
 177
 178 /* Compute shader:
 179  */
 180 void st_update_cs_constants(struct st_context *st )
 181 {
 182    struct st_compute_program *cp = st->cp;
 183
 184    if (cp)
 185       st_upload_constants(st, &cp->Base);
 186 }
 187
 188 static void st_bind_ubos(struct st_context *st, struct gl_program *prog,
 189                          unsigned shader_type)
 190 {
 191    unsigned i;
 192    struct pipe_constant_buffer cb = { 0 };
 193
 194    if (!prog)
 195       return;
 196
 197    for (i = 0; i < prog->info.num_ubos; i++) {
 198       struct gl_buffer_binding *binding;
 199       struct st_buffer_object *st_obj;
 200
 201       binding =
 202          &st->ctx->UniformBufferBindings[prog->sh.UniformBlocks[i]->Binding];
 203       st_obj = st_buffer_object(binding->BufferObject);
 204
 205       cb.buffer = st_obj->buffer;
 206
 207       if (cb.buffer) {
 208          cb.buffer_offset = binding->Offset;
 209          cb.buffer_size = cb.buffer->width0 - binding->Offset;
 210
 211          /* AutomaticSize is FALSE if the buffer was set with BindBufferRange.
 212           * Take the minimum just to be sure.
 213           */
 214          if (!binding->AutomaticSize)
 215             cb.buffer_size = MIN2(cb.buffer_size, (unsigned) binding->Size);
 216       }
 217       else {
 218          cb.buffer_offset = 0;
 219          cb.buffer_size = 0;
 220       }
 221
 222       cso_set_constant_buffer(st->cso_context, shader_type, 1 + i, &cb);
 223    }
 224 }
 225
 226 void st_bind_vs_ubos(struct st_context *st)
 227 {
 228    struct gl_program *prog =
 229       st->ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
 230
 231    st_bind_ubos(st, prog, PIPE_SHADER_VERTEX);
 232 }
 233
 234 void st_bind_fs_ubos(struct st_context *st)
 235 {
 236    struct gl_program *prog =
 237       st->ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT];
 238
 239    st_bind_ubos(st, prog, PIPE_SHADER_FRAGMENT);
 240 }
 241
 242 void st_bind_gs_ubos(struct st_context *st)
 243 {
 244    struct gl_program *prog =
 245       st->ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY];
 246
 247    st_bind_ubos(st, prog, PIPE_SHADER_GEOMETRY);
 248 }
 249
 250 void st_bind_tcs_ubos(struct st_context *st)
 251 {
 252    struct gl_program *prog =
 253       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_CTRL];
 254
 255    st_bind_ubos(st, prog, PIPE_SHADER_TESS_CTRL);
 256 }
 257
 258 void st_bind_tes_ubos(struct st_context *st)
 259 {
 260    struct gl_program *prog =
 261       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL];
 262
 263    st_bind_ubos(st, prog, PIPE_SHADER_TESS_EVAL);
 264 }
 265
 266 void st_bind_cs_ubos(struct st_context *st)
 267 {
 268    struct gl_program *prog =
 269       st->ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
 270
 271    st_bind_ubos(st, prog, PIPE_SHADER_COMPUTE);
 272 }