src/mesa/state_tracker/st_cb_program.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  /*
  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 }