src/mesa/state_tracker/st_atom_shader.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 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  * State validation for vertex/fragment shaders.
  30  * Note that we have to delay most vertex/fragment shader translation
  31  * until rendering time since the linkage between the vertex outputs and
  32  * fragment inputs can vary depending on the pairing of shaders.
  33  *
  34  * Authors:
  35  *   Brian Paul
  36  */
  37
  38 #include "main/imports.h"
  39 #include "main/mtypes.h"
  40 #include "main/framebuffer.h"
  41 #include "program/program.h"
  42
  43 #include "pipe/p_context.h"
  44 #include "pipe/p_shader_tokens.h"
  45 #include "util/u_simple_shaders.h"
  46 #include "cso_cache/cso_context.h"
  47
  48 #include "st_context.h"
  49 #include "st_atom.h"
  50 #include "st_program.h"
  51
  52
  53 /**
  54  * Update fragment program state/atom.  This involves translating the
  55  * Mesa fragment program into a gallium fragment program and binding it.
  56  */
  57 static void
  58 update_fp( struct st_context *st )
  59 {
  60    struct st_fragment_program *stfp;
  61    struct st_fp_variant_key key;
  62
  63    assert(st->ctx->FragmentProgram._Current);
  64    stfp = st_fragment_program(st->ctx->FragmentProgram._Current);
  65    assert(stfp->Base.Base.Target == GL_FRAGMENT_PROGRAM_ARB);
  66
  67    memset(&key, 0, sizeof(key));
  68    key.st = st->has_shareable_shaders ? NULL : st;
  69
  70    /* _NEW_FRAG_CLAMP */
  71    key.clamp_color = st->clamp_frag_color_in_shader &&
  72                      st->ctx->Color._ClampFragmentColor;
  73
  74    /* _NEW_MULTISAMPLE | _NEW_BUFFERS */
  75    key.persample_shading =
  76       st->force_persample_in_shader &&
  77       st->ctx->Multisample._Enabled &&
  78       st->ctx->Multisample.SampleShading &&
  79       st->ctx->Multisample.MinSampleShadingValue *
  80       _mesa_geometric_samples(st->ctx->DrawBuffer) > 1;
  81
  82    st->fp_variant = st_get_fp_variant(st, stfp, &key);
  83
  84    st_reference_fragprog(st, &st->fp, stfp);
  85
  86    cso_set_fragment_shader_handle(st->cso_context,
  87                                   st->fp_variant->driver_shader);
  88 }
  89
  90
  91 const struct st_tracked_state st_update_fp = {
  92    "st_update_fp",                                      /* name */
  93    {                                                    /* dirty */
  94       _NEW_BUFFERS | _NEW_MULTISAMPLE,                  /* mesa */
  95       ST_NEW_FRAGMENT_PROGRAM                           /* st */
  96    },
  97    update_fp                                    /* update */
  98 };
  99
 100
 101
 102 /**
 103  * Update vertex program state/atom.  This involves translating the
 104  * Mesa vertex program into a gallium fragment program and binding it.
 105  */
 106 static void
 107 update_vp( struct st_context *st )
 108 {
 109    struct st_vertex_program *stvp;
 110    struct st_vp_variant_key key;
 111
 112    /* find active shader and params -- Should be covered by
 113     * ST_NEW_VERTEX_PROGRAM
 114     */
 115    assert(st->ctx->VertexProgram._Current);
 116    stvp = st_vertex_program(st->ctx->VertexProgram._Current);
 117    assert(stvp->Base.Base.Target == GL_VERTEX_PROGRAM_ARB);
 118
 119    memset(&key, 0, sizeof key);
 120    key.st = st->has_shareable_shaders ? NULL : st;
 121
 122    /* When this is true, we will add an extra input to the vertex
 123     * shader translation (for edgeflags), an extra output with
 124     * edgeflag semantics, and extend the vertex shader to pass through
 125     * the input to the output.  We'll need to use similar logic to set
 126     * up the extra vertex_element input for edgeflags.
 127     */
 128    key.passthrough_edgeflags = st->vertdata_edgeflags;
 129
 130    key.clamp_color = st->clamp_vert_color_in_shader &&
 131                      st->ctx->Light._ClampVertexColor &&
 132                      (stvp->Base.Base.OutputsWritten &
 133                       (VARYING_SLOT_COL0 |
 134                        VARYING_SLOT_COL1 |
 135                        VARYING_SLOT_BFC0 |
 136                        VARYING_SLOT_BFC1));
 137
 138    st->vp_variant = st_get_vp_variant(st, stvp, &key);
 139
 140    st_reference_vertprog(st, &st->vp, stvp);
 141
 142    cso_set_vertex_shader_handle(st->cso_context,
 143                                 st->vp_variant->driver_shader);
 144
 145    st->vertex_result_to_slot = stvp->result_to_output;
 146 }
 147
 148
 149 const struct st_tracked_state st_update_vp = {
 150    "st_update_vp",                                      /* name */
 151    {                                                    /* dirty */
 152       0,                                                /* mesa */
 153       ST_NEW_VERTEX_PROGRAM                             /* st */
 154    },
 155    update_vp                                            /* update */
 156 };
 157
 158
 159
 160 static void
 161 update_gp( struct st_context *st )
 162 {
 163    struct st_geometry_program *stgp;
 164
 165    if (!st->ctx->GeometryProgram._Current) {
 166       cso_set_geometry_shader_handle(st->cso_context, NULL);
 167       return;
 168    }
 169
 170    stgp = st_geometry_program(st->ctx->GeometryProgram._Current);
 171    assert(stgp->Base.Base.Target == GL_GEOMETRY_PROGRAM_NV);
 172
 173    st->gp_variant = st_get_basic_variant(st, PIPE_SHADER_GEOMETRY,
 174                                          &stgp->tgsi, &stgp->variants);
 175
 176    st_reference_geomprog(st, &st->gp, stgp);
 177
 178    cso_set_geometry_shader_handle(st->cso_context,
 179                                   st->gp_variant->driver_shader);
 180 }
 181
 182 const struct st_tracked_state st_update_gp = {
 183    "st_update_gp",                      /* name */
 184    {                                    /* dirty */
 185       0,                                /* mesa */
 186       ST_NEW_GEOMETRY_PROGRAM           /* st */
 187    },
 188    update_gp                            /* update */
 189 };
 190
 191
 192
 193 static void
 194 update_tcp( struct st_context *st )
 195 {
 196    struct st_tessctrl_program *sttcp;
 197
 198    if (!st->ctx->TessCtrlProgram._Current) {
 199       cso_set_tessctrl_shader_handle(st->cso_context, NULL);
 200       return;
 201    }
 202
 203    sttcp = st_tessctrl_program(st->ctx->TessCtrlProgram._Current);
 204    assert(sttcp->Base.Base.Target == GL_TESS_CONTROL_PROGRAM_NV);
 205
 206    st->tcp_variant = st_get_basic_variant(st, PIPE_SHADER_TESS_CTRL,
 207                                           &sttcp->tgsi, &sttcp->variants);
 208
 209    st_reference_tesscprog(st, &st->tcp, sttcp);
 210
 211    cso_set_tessctrl_shader_handle(st->cso_context,
 212                                   st->tcp_variant->driver_shader);
 213 }
 214
 215 const struct st_tracked_state st_update_tcp = {
 216    "st_update_tcp",                     /* name */
 217    {                                    /* dirty */
 218       0,                                /* mesa */
 219       ST_NEW_TESSCTRL_PROGRAM           /* st */
 220    },
 221    update_tcp                           /* update */
 222 };
 223
 224
 225
 226 static void
 227 update_tep( struct st_context *st )
 228 {
 229    struct st_tesseval_program *sttep;
 230
 231    if (!st->ctx->TessEvalProgram._Current) {
 232       cso_set_tesseval_shader_handle(st->cso_context, NULL);
 233       return;
 234    }
 235
 236    sttep = st_tesseval_program(st->ctx->TessEvalProgram._Current);
 237    assert(sttep->Base.Base.Target == GL_TESS_EVALUATION_PROGRAM_NV);
 238
 239    st->tep_variant = st_get_basic_variant(st, PIPE_SHADER_TESS_EVAL,
 240                                           &sttep->tgsi, &sttep->variants);
 241
 242    st_reference_tesseprog(st, &st->tep, sttep);
 243
 244    cso_set_tesseval_shader_handle(st->cso_context,
 245                                   st->tep_variant->driver_shader);
 246 }
 247
 248 const struct st_tracked_state st_update_tep = {
 249    "st_update_tep",                     /* name */
 250    {                                    /* dirty */
 251       0,                                /* mesa */
 252       ST_NEW_TESSEVAL_PROGRAM           /* st */
 253    },
 254    update_tep                           /* update */
 255 };
 256
 257
 258
 259 static void
 260 update_cp( struct st_context *st )
 261 {
 262    struct st_compute_program *stcp;
 263
 264    if (!st->ctx->ComputeProgram._Current) {
 265       cso_set_compute_shader_handle(st->cso_context, NULL);
 266       return;
 267    }
 268
 269    stcp = st_compute_program(st->ctx->ComputeProgram._Current);
 270    assert(stcp->Base.Base.Target == GL_COMPUTE_PROGRAM_NV);
 271
 272    st->cp_variant = st_get_cp_variant(st, &stcp->tgsi, &stcp->variants);
 273
 274    st_reference_compprog(st, &st->cp, stcp);
 275
 276    cso_set_compute_shader_handle(st->cso_context,
 277                                  st->cp_variant->driver_shader);
 278 }
 279
 280 const struct st_tracked_state st_update_cp = {
 281    "st_update_cp",                      /* name */
 282    {                                    /* dirty */
 283       0,                                /* mesa */
 284       ST_NEW_COMPUTE_PROGRAM           /* st */
 285    },
 286    update_cp                            /* update */
 287 };