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 "util/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
  56 st_upload_constants(struct st_context *st, struct gl_program *prog)
  57 {
  58    gl_shader_stage stage = prog->info.stage;
  59    struct gl_program_parameter_list *params = prog->Parameters;
  60    enum pipe_shader_type shader_type = pipe_shader_type_from_mesa(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          unsigned offset = params->ParameterValueOffset[c];
  76          if (ati_fs->LocalConstDef & (1 << c))
  77             memcpy(params->ParameterValues + offset,
  78                    ati_fs->Constants[c], sizeof(GLfloat) * 4);
  79          else
  80             memcpy(params->ParameterValues + offset,
  81                    st->ctx->ATIFragmentShader.GlobalConstants[c],
  82                    sizeof(GLfloat) * 4);
  83       }
  84    }
  85
  86    /* Make all bindless samplers/images bound texture/image units resident in
  87     * the context.
  88     */
  89    st_make_bound_samplers_resident(st, prog);
  90    st_make_bound_images_resident(st, prog);
  91
  92    /* update constants */
  93    if (params && params->NumParameters) {
  94       struct pipe_constant_buffer cb;
  95       const uint paramBytes = params->NumParameterValues * sizeof(GLfloat);
  96
  97       /* Update the constants which come from fixed-function state, such as
  98        * transformation matrices, fog factors, etc.  The rest of the values in
  99        * the parameters list are explicitly set by the user with glUniform,
 100        * glProgramParameter(), etc.
 101        */
 102       if (params->StateFlags)
 103          _mesa_load_state_parameters(st->ctx, params);
 104
 105       _mesa_shader_write_subroutine_indices(st->ctx, stage);
 106
 107       cb.buffer = NULL;
 108       cb.user_buffer = params->ParameterValues;
 109       cb.buffer_offset = 0;
 110       cb.buffer_size = paramBytes;
 111
 112       if (ST_DEBUG & DEBUG_CONSTANTS) {
 113          debug_printf("%s(shader=%d, numParams=%d, stateFlags=0x%x)\n",
 114                       __func__, shader_type, params->NumParameters,
 115                       params->StateFlags);
 116          _mesa_print_parameter_list(params);
 117       }
 118
 119       cso_set_constant_buffer(st->cso_context, shader_type, 0, &cb);
 120       pipe_resource_reference(&cb.buffer, NULL);
 121
 122       st->state.constants[shader_type].ptr = params->ParameterValues;
 123       st->state.constants[shader_type].size = paramBytes;
 124    }
 125    else if (st->state.constants[shader_type].ptr) {
 126       /* Unbind. */
 127       st->state.constants[shader_type].ptr = NULL;
 128       st->state.constants[shader_type].size = 0;
 129       cso_set_constant_buffer(st->cso_context, shader_type, 0, NULL);
 130    }
 131 }
 132
 133
 134 /**
 135  * Vertex shader:
 136  */
 137 void
 138 st_update_vs_constants(struct st_context *st)
 139 {
 140    st_upload_constants(st, &st->vp->Base);
 141 }
 142
 143 /**
 144  * Fragment shader:
 145  */
 146 void
 147 st_update_fs_constants(struct st_context *st)
 148 {
 149    st_upload_constants(st, &st->fp->Base);
 150 }
 151
 152
 153 /* Geometry shader:
 154  */
 155 void
 156 st_update_gs_constants(struct st_context *st)
 157 {
 158    struct st_program *gp = st->gp;
 159
 160    if (gp)
 161       st_upload_constants(st, &gp->Base);
 162 }
 163
 164 /* Tessellation control shader:
 165  */
 166 void
 167 st_update_tcs_constants(struct st_context *st)
 168 {
 169    struct st_program *tcp = st->tcp;
 170
 171    if (tcp)
 172       st_upload_constants(st, &tcp->Base);
 173 }
 174
 175 /* Tessellation evaluation shader:
 176  */
 177 void
 178 st_update_tes_constants(struct st_context *st)
 179 {
 180    struct st_program *tep = st->tep;
 181
 182    if (tep)
 183       st_upload_constants(st, &tep->Base);
 184 }
 185
 186 /* Compute shader:
 187  */
 188 void
 189 st_update_cs_constants(struct st_context *st)
 190 {
 191    struct st_program *cp = st->cp;
 192
 193    if (cp)
 194       st_upload_constants(st, &cp->Base);
 195 }
 196
 197 static void
 198 st_bind_ubos(struct st_context *st, struct gl_program *prog,
 199              enum pipe_shader_type shader_type)
 200 {
 201    unsigned i;
 202    struct pipe_constant_buffer cb = { 0 };
 203
 204    if (!prog)
 205       return;
 206
 207    for (i = 0; i < prog->info.num_ubos; i++) {
 208       struct gl_buffer_binding *binding;
 209       struct st_buffer_object *st_obj;
 210
 211       binding =
 212          &st->ctx->UniformBufferBindings[prog->sh.UniformBlocks[i]->Binding];
 213       st_obj = st_buffer_object(binding->BufferObject);
 214
 215       cb.buffer = st_obj ? st_obj->buffer : NULL;
 216
 217       if (cb.buffer) {
 218          cb.buffer_offset = binding->Offset;
 219          cb.buffer_size = cb.buffer->width0 - binding->Offset;
 220
 221          /* AutomaticSize is FALSE if the buffer was set with BindBufferRange.
 222           * Take the minimum just to be sure.
 223           */
 224          if (!binding->AutomaticSize)
 225             cb.buffer_size = MIN2(cb.buffer_size, (unsigned) binding->Size);
 226       }
 227       else {
 228          cb.buffer_offset = 0;
 229          cb.buffer_size = 0;
 230       }
 231
 232       cso_set_constant_buffer(st->cso_context, shader_type, 1 + i, &cb);
 233    }
 234 }
 235
 236 void
 237 st_bind_vs_ubos(struct st_context *st)
 238 {
 239    struct gl_program *prog =
 240       st->ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
 241
 242    st_bind_ubos(st, prog, PIPE_SHADER_VERTEX);
 243 }
 244
 245 void
 246 st_bind_fs_ubos(struct st_context *st)
 247 {
 248    struct gl_program *prog =
 249       st->ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT];
 250
 251    st_bind_ubos(st, prog, PIPE_SHADER_FRAGMENT);
 252 }
 253
 254 void
 255 st_bind_gs_ubos(struct st_context *st)
 256 {
 257    struct gl_program *prog =
 258       st->ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY];
 259
 260    st_bind_ubos(st, prog, PIPE_SHADER_GEOMETRY);
 261 }
 262
 263 void
 264 st_bind_tcs_ubos(struct st_context *st)
 265 {
 266    struct gl_program *prog =
 267       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_CTRL];
 268
 269    st_bind_ubos(st, prog, PIPE_SHADER_TESS_CTRL);
 270 }
 271
 272 void
 273 st_bind_tes_ubos(struct st_context *st)
 274 {
 275    struct gl_program *prog =
 276       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL];
 277
 278    st_bind_ubos(st, prog, PIPE_SHADER_TESS_EVAL);
 279 }
 280
 281 void
 282 st_bind_cs_ubos(struct st_context *st)
 283 {
 284    struct gl_program *prog =
 285       st->ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
 286
 287    st_bind_ubos(st, prog, PIPE_SHADER_COMPUTE);
 288 }