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  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.  /*
  29.   * Authors:
  30.   *   Keith Whitwell <keith@tungstengraphics.com>
  31.   */
  32.  
  33. #include "main/glheader.h"
  34. #include "main/macros.h"
  35. #include "main/enums.h"
  36. #include "main/shaderapi.h"
  37. #include "program/prog_instruction.h"
  38. #include "program/program.h"
  39.  
  40. #include "cso_cache/cso_context.h"
  41. #include "draw/draw_context.h"
  42.  
  43. #include "st_context.h"
  44. #include "st_program.h"
  45. #include "st_mesa_to_tgsi.h"
  46. #include "st_cb_program.h"
  47. #include "st_glsl_to_tgsi.h"
  48.  
  49.  
  50.  
  51. /**
  52.  * Called via ctx->Driver.BindProgram() to bind an ARB vertex or
  53.  * fragment program.
  54.  */
  55. static void
  56. st_bind_program(struct gl_context *ctx, GLenum target, struct gl_program *prog)
  57. {
  58.    struct st_context *st = st_context(ctx);
  59.  
  60.    switch (target) {
  61.    case GL_VERTEX_PROGRAM_ARB:
  62.       st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
  63.       break;
  64.    case GL_FRAGMENT_PROGRAM_ARB:
  65.       st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
  66.       break;
  67.    case MESA_GEOMETRY_PROGRAM:
  68.       st->dirty.st |= ST_NEW_GEOMETRY_PROGRAM;
  69.       break;
  70.    }
  71. }
  72.  
  73.  
  74. /**
  75.  * Called via ctx->Driver.UseProgram() to bind a linked GLSL program
  76.  * (vertex shader + fragment shader).
  77.  */
  78. static void
  79. st_use_program(struct gl_context *ctx, struct gl_shader_program *shProg)
  80. {
  81.    struct st_context *st = st_context(ctx);
  82.  
  83.    st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
  84.    st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
  85.    st->dirty.st |= ST_NEW_GEOMETRY_PROGRAM;
  86. }
  87.  
  88.  
  89. /**
  90.  * Called via ctx->Driver.NewProgram() to allocate a new vertex or
  91.  * fragment program.
  92.  */
  93. static struct gl_program *
  94. st_new_program(struct gl_context *ctx, GLenum target, GLuint id)
  95. {
  96.    switch (target) {
  97.    case GL_VERTEX_PROGRAM_ARB: {
  98.       struct st_vertex_program *prog = ST_CALLOC_STRUCT(st_vertex_program);
  99.       return _mesa_init_vertex_program(ctx, &prog->Base, target, id);
  100.    }
  101.  
  102.    case GL_FRAGMENT_PROGRAM_ARB: {
  103.       struct st_fragment_program *prog = ST_CALLOC_STRUCT(st_fragment_program);
  104.       return _mesa_init_fragment_program(ctx, &prog->Base, target, id);
  105.    }
  106.  
  107.    case MESA_GEOMETRY_PROGRAM: {
  108.       struct st_geometry_program *prog = ST_CALLOC_STRUCT(st_geometry_program);
  109.       return _mesa_init_geometry_program(ctx, &prog->Base, target, id);
  110.    }
  111.  
  112.    default:
  113.       assert(0);
  114.       return NULL;
  115.    }
  116. }
  117.  
  118.  
  119. /**
  120.  * Called via ctx->Driver.DeleteProgram()
  121.  */
  122. static void
  123. st_delete_program(struct gl_context *ctx, struct gl_program *prog)
  124. {
  125.    struct st_context *st = st_context(ctx);
  126.  
  127.    switch( prog->Target ) {
  128.    case GL_VERTEX_PROGRAM_ARB:
  129.       {
  130.          struct st_vertex_program *stvp = (struct st_vertex_program *) prog;
  131.          st_release_vp_variants( st, stvp );
  132.          
  133.          if (stvp->glsl_to_tgsi)
  134.             free_glsl_to_tgsi_visitor(stvp->glsl_to_tgsi);
  135.       }
  136.       break;
  137.    case MESA_GEOMETRY_PROGRAM:
  138.       {
  139.          struct st_geometry_program *stgp =
  140.             (struct st_geometry_program *) prog;
  141.  
  142.          st_release_gp_variants(st, stgp);
  143.          
  144.          if (stgp->glsl_to_tgsi)
  145.             free_glsl_to_tgsi_visitor(stgp->glsl_to_tgsi);
  146.  
  147.          if (stgp->tgsi.tokens) {
  148.             st_free_tokens((void *) stgp->tgsi.tokens);
  149.             stgp->tgsi.tokens = NULL;
  150.          }
  151.       }
  152.       break;
  153.    case GL_FRAGMENT_PROGRAM_ARB:
  154.       {
  155.          struct st_fragment_program *stfp =
  156.             (struct st_fragment_program *) prog;
  157.  
  158.          st_release_fp_variants(st, stfp);
  159.          
  160.          if (stfp->glsl_to_tgsi)
  161.             free_glsl_to_tgsi_visitor(stfp->glsl_to_tgsi);
  162.       }
  163.       break;
  164.    default:
  165.       assert(0); /* problem */
  166.    }
  167.  
  168.    /* delete base class */
  169.    _mesa_delete_program( ctx, prog );
  170. }
  171.  
  172.  
  173. /**
  174.  * Called via ctx->Driver.IsProgramNative()
  175.  */
  176. static GLboolean
  177. st_is_program_native(struct gl_context *ctx,
  178.                      GLenum target,
  179.                      struct gl_program *prog)
  180. {
  181.    return GL_TRUE;
  182. }
  183.  
  184.  
  185. /**
  186.  * Called via ctx->Driver.ProgramStringNotify()
  187.  * Called when the program's text/code is changed.  We have to free
  188.  * all shader variants and corresponding gallium shaders when this happens.
  189.  */
  190. static GLboolean
  191. st_program_string_notify( struct gl_context *ctx,
  192.                                            GLenum target,
  193.                                            struct gl_program *prog )
  194. {
  195.    struct st_context *st = st_context(ctx);
  196.  
  197.    if (target == GL_FRAGMENT_PROGRAM_ARB) {
  198.       struct st_fragment_program *stfp = (struct st_fragment_program *) prog;
  199.  
  200.       st_release_fp_variants(st, stfp);
  201.  
  202.       if (st->fp == stfp)
  203.          st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
  204.    }
  205.    else if (target == MESA_GEOMETRY_PROGRAM) {
  206.       struct st_geometry_program *stgp = (struct st_geometry_program *) prog;
  207.  
  208.       st_release_gp_variants(st, stgp);
  209.  
  210.       if (stgp->tgsi.tokens) {
  211.          st_free_tokens((void *) stgp->tgsi.tokens);
  212.          stgp->tgsi.tokens = NULL;
  213.       }
  214.  
  215.       if (st->gp == stgp)
  216.          st->dirty.st |= ST_NEW_GEOMETRY_PROGRAM;
  217.    }
  218.    else if (target == GL_VERTEX_PROGRAM_ARB) {
  219.       struct st_vertex_program *stvp = (struct st_vertex_program *) prog;
  220.  
  221.       st_release_vp_variants( st, stvp );
  222.  
  223.       if (st->vp == stvp)
  224.          st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
  225.    }
  226.  
  227.    /* XXX check if program is legal, within limits */
  228.    return GL_TRUE;
  229. }
  230.  
  231.  
  232. /**
  233.  * Plug in the program and shader-related device driver functions.
  234.  */
  235. void
  236. st_init_program_functions(struct dd_function_table *functions)
  237. {
  238.    functions->BindProgram = st_bind_program;
  239.    functions->UseProgram = st_use_program;
  240.    functions->NewProgram = st_new_program;
  241.    functions->DeleteProgram = st_delete_program;
  242.    functions->IsProgramNative = st_is_program_native;
  243.    functions->ProgramStringNotify = st_program_string_notify;
  244.    
  245.    functions->NewShader = st_new_shader;
  246.    functions->NewShaderProgram = st_new_shader_program;
  247.    functions->LinkShader = st_link_shader;
  248. }
  249.