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 "main/texobj.h"
  42 #include "main/texstate.h"
  43 #include "program/program.h"
  44
  45 #include "pipe/p_context.h"
  46 #include "pipe/p_shader_tokens.h"
  47 #include "util/u_simple_shaders.h"
  48 #include "cso_cache/cso_context.h"
  49 #include "util/u_debug.h"
  50
  51 #include "st_context.h"
  52 #include "st_atom.h"
  53 #include "st_program.h"
  54 #include "st_texture.h"
  55
  56
  57 static unsigned
  58 get_texture_target(struct gl_context *ctx, const unsigned unit)
  59 {
  60    struct gl_texture_object *texObj = _mesa_get_tex_unit(ctx, unit)->_Current;
  61    gl_texture_index index;
  62
  63    if (texObj) {
  64       index = _mesa_tex_target_to_index(ctx, texObj->Target);
  65    } else {
  66       /* fallback for missing texture */
  67       index = TEXTURE_2D_INDEX;
  68    }
  69
  70    /* Map mesa texture target to TGSI texture target.
  71     * Copied from st_mesa_to_tgsi.c, the shadow part is omitted */
  72    switch(index) {
  73    case TEXTURE_2D_MULTISAMPLE_INDEX: return TGSI_TEXTURE_2D_MSAA;
  74    case TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX: return TGSI_TEXTURE_2D_ARRAY_MSAA;
  75    case TEXTURE_BUFFER_INDEX: return TGSI_TEXTURE_BUFFER;
  76    case TEXTURE_1D_INDEX:   return TGSI_TEXTURE_1D;
  77    case TEXTURE_2D_INDEX:   return TGSI_TEXTURE_2D;
  78    case TEXTURE_3D_INDEX:   return TGSI_TEXTURE_3D;
  79    case TEXTURE_CUBE_INDEX: return TGSI_TEXTURE_CUBE;
  80    case TEXTURE_CUBE_ARRAY_INDEX: return TGSI_TEXTURE_CUBE_ARRAY;
  81    case TEXTURE_RECT_INDEX: return TGSI_TEXTURE_RECT;
  82    case TEXTURE_1D_ARRAY_INDEX:   return TGSI_TEXTURE_1D_ARRAY;
  83    case TEXTURE_2D_ARRAY_INDEX:   return TGSI_TEXTURE_2D_ARRAY;
  84    case TEXTURE_EXTERNAL_INDEX:   return TGSI_TEXTURE_2D;
  85    default:
  86       debug_assert(0);
  87       return TGSI_TEXTURE_1D;
  88    }
  89 }
  90
  91
  92 /**
  93  * Update fragment program state/atom.  This involves translating the
  94  * Mesa fragment program into a gallium fragment program and binding it.
  95  */
  96 void
  97 st_update_fp( struct st_context *st )
  98 {
  99    struct st_fragment_program *stfp;
 100    struct st_fp_variant_key key;
 101
 102    assert(st->ctx->FragmentProgram._Current);
 103    stfp = st_fragment_program(st->ctx->FragmentProgram._Current);
 104    assert(stfp->Base.Target == GL_FRAGMENT_PROGRAM_ARB);
 105
 106    memset(&key, 0, sizeof(key));
 107    key.st = st->has_shareable_shaders ? NULL : st;
 108
 109    /* _NEW_FRAG_CLAMP */
 110    key.clamp_color = st->clamp_frag_color_in_shader &&
 111                      st->ctx->Color._ClampFragmentColor;
 112
 113    /* _NEW_MULTISAMPLE | _NEW_BUFFERS */
 114    key.persample_shading =
 115       st->force_persample_in_shader &&
 116       _mesa_is_multisample_enabled(st->ctx) &&
 117       st->ctx->Multisample.SampleShading &&
 118       st->ctx->Multisample.MinSampleShadingValue *
 119       _mesa_geometric_samples(st->ctx->DrawBuffer) > 1;
 120
 121    if (stfp->ati_fs) {
 122       key.fog = st->ctx->Fog._PackedEnabledMode;
 123
 124       for (unsigned u = 0; u < MAX_NUM_FRAGMENT_REGISTERS_ATI; u++) {
 125          key.texture_targets[u] = get_texture_target(st->ctx, u);
 126       }
 127    }
 128
 129    key.external = st_get_external_sampler_key(st, &stfp->Base);
 130
 131    st->fp_variant = st_get_fp_variant(st, stfp, &key);
 132
 133    st_reference_fragprog(st, &st->fp, stfp);
 134
 135    cso_set_fragment_shader_handle(st->cso_context,
 136                                   st->fp_variant->driver_shader);
 137 }
 138
 139
 140 /**
 141  * Update vertex program state/atom.  This involves translating the
 142  * Mesa vertex program into a gallium fragment program and binding it.
 143  */
 144 void
 145 st_update_vp( struct st_context *st )
 146 {
 147    struct st_vertex_program *stvp;
 148    struct st_vp_variant_key key;
 149
 150    /* find active shader and params -- Should be covered by
 151     * ST_NEW_VERTEX_PROGRAM
 152     */
 153    assert(st->ctx->VertexProgram._Current);
 154    stvp = st_vertex_program(st->ctx->VertexProgram._Current);
 155    assert(stvp->Base.Target == GL_VERTEX_PROGRAM_ARB);
 156
 157    memset(&key, 0, sizeof key);
 158    key.st = st->has_shareable_shaders ? NULL : st;
 159
 160    /* When this is true, we will add an extra input to the vertex
 161     * shader translation (for edgeflags), an extra output with
 162     * edgeflag semantics, and extend the vertex shader to pass through
 163     * the input to the output.  We'll need to use similar logic to set
 164     * up the extra vertex_element input for edgeflags.
 165     */
 166    key.passthrough_edgeflags = st->vertdata_edgeflags;
 167
 168    key.clamp_color = st->clamp_vert_color_in_shader &&
 169                      st->ctx->Light._ClampVertexColor &&
 170                      (stvp->Base.info.outputs_written &
 171                       (VARYING_SLOT_COL0 |
 172                        VARYING_SLOT_COL1 |
 173                        VARYING_SLOT_BFC0 |
 174                        VARYING_SLOT_BFC1));
 175
 176    st->vp_variant = st_get_vp_variant(st, stvp, &key);
 177
 178    st_reference_vertprog(st, &st->vp, stvp);
 179
 180    cso_set_vertex_shader_handle(st->cso_context,
 181                                 st->vp_variant->driver_shader);
 182
 183    st->vertex_result_to_slot = stvp->result_to_output;
 184 }
 185
 186
 187 void
 188 st_update_gp( struct st_context *st )
 189 {
 190    struct st_geometry_program *stgp;
 191
 192    if (!st->ctx->GeometryProgram._Current) {
 193       cso_set_geometry_shader_handle(st->cso_context, NULL);
 194       st_reference_geomprog(st, &st->gp, NULL);
 195       return;
 196    }
 197
 198    stgp = st_geometry_program(st->ctx->GeometryProgram._Current);
 199    assert(stgp->Base.Target == GL_GEOMETRY_PROGRAM_NV);
 200
 201    st->gp_variant = st_get_basic_variant(st, PIPE_SHADER_GEOMETRY,
 202                                          &stgp->tgsi, &stgp->variants);
 203
 204    st_reference_geomprog(st, &st->gp, stgp);
 205
 206    cso_set_geometry_shader_handle(st->cso_context,
 207                                   st->gp_variant->driver_shader);
 208 }
 209
 210
 211 void
 212 st_update_tcp( struct st_context *st )
 213 {
 214    struct st_tessctrl_program *sttcp;
 215
 216    if (!st->ctx->TessCtrlProgram._Current) {
 217       cso_set_tessctrl_shader_handle(st->cso_context, NULL);
 218       st_reference_tesscprog(st, &st->tcp, NULL);
 219       return;
 220    }
 221
 222    sttcp = st_tessctrl_program(st->ctx->TessCtrlProgram._Current);
 223    assert(sttcp->Base.Target == GL_TESS_CONTROL_PROGRAM_NV);
 224
 225    st->tcp_variant = st_get_basic_variant(st, PIPE_SHADER_TESS_CTRL,
 226                                           &sttcp->tgsi, &sttcp->variants);
 227
 228    st_reference_tesscprog(st, &st->tcp, sttcp);
 229
 230    cso_set_tessctrl_shader_handle(st->cso_context,
 231                                   st->tcp_variant->driver_shader);
 232 }
 233
 234
 235 void
 236 st_update_tep( struct st_context *st )
 237 {
 238    struct st_tesseval_program *sttep;
 239
 240    if (!st->ctx->TessEvalProgram._Current) {
 241       cso_set_tesseval_shader_handle(st->cso_context, NULL);
 242       st_reference_tesseprog(st, &st->tep, NULL);
 243       return;
 244    }
 245
 246    sttep = st_tesseval_program(st->ctx->TessEvalProgram._Current);
 247    assert(sttep->Base.Target == GL_TESS_EVALUATION_PROGRAM_NV);
 248
 249    st->tep_variant = st_get_basic_variant(st, PIPE_SHADER_TESS_EVAL,
 250                                           &sttep->tgsi, &sttep->variants);
 251
 252    st_reference_tesseprog(st, &st->tep, sttep);
 253
 254    cso_set_tesseval_shader_handle(st->cso_context,
 255                                   st->tep_variant->driver_shader);
 256 }
 257
 258
 259 void
 260 st_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       st_reference_compprog(st, &st->cp, NULL);
 267       return;
 268    }
 269
 270    stcp = st_compute_program(st->ctx->ComputeProgram._Current);
 271    assert(stcp->Base.Target == GL_COMPUTE_PROGRAM_NV);
 272
 273    st->cp_variant = st_get_cp_variant(st, &stcp->tgsi, &stcp->variants);
 274
 275    st_reference_compprog(st, &st->cp, stcp);
 276
 277    cso_set_compute_shader_handle(st->cso_context,
 278                                  st->cp_variant->driver_shader);
 279 }