src/mesa/state_tracker/st_atom_fs.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 TUNGSTEN GRAPHICS 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   * Authors:
  29   *   Keith Whitwell <keith@tungstengraphics.com>
  30   */
  31
  32 #include "shader/prog_parameter.h"
  33
  34 #include "pipe/p_context.h"
  35 #include "pipe/p_defines.h"
  36 #include "pipe/p_winsys.h"
  37 #include "pipe/tgsi/mesa/mesa_to_tgsi.h"
  38 #include "pipe/tgsi/exec/tgsi_dump.h"
  39
  40 #include "st_context.h"
  41 #include "st_atom.h"
  42 #include "st_program.h"
  43
  44 #define TGSI_DEBUG 0
  45
  46 static void compile_fs( struct st_context *st )
  47 {
  48    struct st_fragment_program *fp = st->fp;
  49
  50    /* XXX: fix static allocation of tokens:
  51     */
  52    tgsi_mesa_compile_fp_program( &fp->Base, fp->tokens, ST_FP_MAX_TOKENS );
  53
  54    fp->fs.inputs_read
  55       = tgsi_mesa_translate_vertex_input_mask(fp->Base.Base.InputsRead);
  56    fp->fs.outputs_written
  57       = tgsi_mesa_translate_vertex_output_mask(fp->Base.Base.OutputsWritten);
  58    fp->fs.tokens = &fp->tokens[0];
  59
  60    if (TGSI_DEBUG)
  61       tgsi_dump( fp->tokens, TGSI_DUMP_VERBOSE );
  62
  63    fp->dirty = 0;
  64 }
  65
  66
  67
  68 static void update_fs( struct st_context *st )
  69 {
  70    struct st_fragment_program *fp = NULL;
  71
  72    /* find active shader and params.  Changes to this Mesa state
  73     * should be covered by ST_NEW_FRAGMENT_PROGRAM, thanks to the
  74     * logic in st_cb_program.c
  75     */
  76    if (st->ctx->Shader.CurrentProgram &&
  77        st->ctx->Shader.CurrentProgram->LinkStatus &&
  78        st->ctx->Shader.CurrentProgram->FragmentProgram) {
  79       struct gl_fragment_program *f
  80          = st->ctx->Shader.CurrentProgram->FragmentProgram;
  81       fp = st_fragment_program(f);
  82    }
  83    else {
  84       assert(st->ctx->FragmentProgram._Current);
  85       fp = st_fragment_program(st->ctx->FragmentProgram._Current);
  86    }
  87
  88    /* translate shader to TGSI format */
  89    if (st->fp != fp || fp->dirty) {
  90       st->fp = fp;
  91
  92       if (fp->dirty)
  93          compile_fs( st );
  94
  95       st->state.fs = fp->fs;
  96       st->pipe->set_fs_state(st->pipe, &st->state.fs);
  97    }
  98 }
  99
 100
 101 const struct st_tracked_state st_update_fs = {
 102    .dirty = {
 103       .mesa  = 0,
 104       .st   = ST_NEW_FRAGMENT_PROGRAM,
 105    },
 106    .update = update_fs
 107 };