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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 (at) 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    case GL_FRAGMENT_PROGRAM_NV: {
    104       struct st_fragment_program *prog = ST_CALLOC_STRUCT(st_fragment_program);
    105       return _mesa_init_fragment_program(ctx, &prog->Base, target, id);
    106    }
    107 
    108    case MESA_GEOMETRY_PROGRAM: {
    109       struct st_geometry_program *prog = ST_CALLOC_STRUCT(st_geometry_program);
    110       return _mesa_init_geometry_program(ctx, &prog->Base, target, id);
    111    }
    112 
    113    default:
    114       assert(0);
    115       return NULL;
    116    }
    117 }
    118 
    119 
    120 /**
    121  * Called via ctx->Driver.DeleteProgram()
    122  */
    123 static void
    124 st_delete_program(struct gl_context *ctx, struct gl_program *prog)
    125 {
    126    struct st_context *st = st_context(ctx);
    127 
    128    switch( prog->Target ) {
    129    case GL_VERTEX_PROGRAM_ARB:
    130       {
    131          struct st_vertex_program *stvp = (struct st_vertex_program *) prog;
    132          st_release_vp_variants( st, stvp );
    133 
    134          if (stvp->glsl_to_tgsi)
    135             free_glsl_to_tgsi_visitor(stvp->glsl_to_tgsi);
    136       }
    137       break;
    138    case MESA_GEOMETRY_PROGRAM:
    139       {
    140          struct st_geometry_program *stgp =
    141             (struct st_geometry_program *) prog;
    142 
    143          st_release_gp_variants(st, stgp);
    144 
    145          if (stgp->glsl_to_tgsi)
    146             free_glsl_to_tgsi_visitor(stgp->glsl_to_tgsi);
    147 
    148          if (stgp->tgsi.tokens) {
    149             st_free_tokens((void *) stgp->tgsi.tokens);
    150             stgp->tgsi.tokens = NULL;
    151          }
    152       }
    153       break;
    154    case GL_FRAGMENT_PROGRAM_ARB:
    155       {
    156          struct st_fragment_program *stfp =
    157             (struct st_fragment_program *) prog;
    158 
    159          st_release_fp_variants(st, stfp);
    160 
    161          if (stfp->glsl_to_tgsi)
    162             free_glsl_to_tgsi_visitor(stfp->glsl_to_tgsi);
    163       }
    164       break;
    165    default:
    166       assert(0); /* problem */
    167    }
    168 
    169    /* delete base class */
    170    _mesa_delete_program( ctx, prog );
    171 }
    172 
    173 
    174 /**
    175  * Called via ctx->Driver.IsProgramNative()
    176  */
    177 static GLboolean
    178 st_is_program_native(struct gl_context *ctx,
    179                      GLenum target,
    180                      struct gl_program *prog)
    181 {
    182    return GL_TRUE;
    183 }
    184 
    185 
    186 /**
    187  * Called via ctx->Driver.ProgramStringNotify()
    188  * Called when the program's text/code is changed.  We have to free
    189  * all shader variants and corresponding gallium shaders when this happens.
    190  */
    191 static GLboolean
    192 st_program_string_notify( struct gl_context *ctx,
    193                                            GLenum target,
    194                                            struct gl_program *prog )
    195 {
    196    struct st_context *st = st_context(ctx);
    197 
    198    if (target == GL_FRAGMENT_PROGRAM_ARB) {
    199       struct st_fragment_program *stfp = (struct st_fragment_program *) prog;
    200 
    201       st_release_fp_variants(st, stfp);
    202 
    203       if (st->fp == stfp)
    204 	 st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
    205    }
    206    else if (target == MESA_GEOMETRY_PROGRAM) {
    207       struct st_geometry_program *stgp = (struct st_geometry_program *) prog;
    208 
    209       st_release_gp_variants(st, stgp);
    210 
    211       if (stgp->tgsi.tokens) {
    212          st_free_tokens((void *) stgp->tgsi.tokens);
    213          stgp->tgsi.tokens = NULL;
    214       }
    215 
    216       if (st->gp == stgp)
    217 	 st->dirty.st |= ST_NEW_GEOMETRY_PROGRAM;
    218    }
    219    else if (target == GL_VERTEX_PROGRAM_ARB) {
    220       struct st_vertex_program *stvp = (struct st_vertex_program *) prog;
    221 
    222       st_release_vp_variants( st, stvp );
    223 
    224       if (st->vp == stvp)
    225 	 st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
    226    }
    227 
    228    /* XXX check if program is legal, within limits */
    229    return GL_TRUE;
    230 }
    231 
    232 
    233 /**
    234  * Plug in the program and shader-related device driver functions.
    235  */
    236 void
    237 st_init_program_functions(struct dd_function_table *functions)
    238 {
    239    functions->BindProgram = st_bind_program;
    240    functions->UseProgram = st_use_program;
    241    functions->NewProgram = st_new_program;
    242    functions->DeleteProgram = st_delete_program;
    243    functions->IsProgramNative = st_is_program_native;
    244    functions->ProgramStringNotify = st_program_string_notify;
    245 
    246    functions->NewShader = st_new_shader;
    247    functions->NewShaderProgram = st_new_shader_program;
    248    functions->LinkShader = st_link_shader;
    249 }
    250