src/mesa/drivers/dri/i965/brw_program.c

   1 /*
   2  Copyright (C) Intel Corp.  2006.  All Rights Reserved.
   3  Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
   4  develop this 3D driver.
   5
   6  Permission is hereby granted, free of charge, to any person obtaining
   7  a 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, sublicense, 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
  16  portions of the Software.
  17
  18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  WITH THE 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 "main/imports.h"
  33 #include "main/enums.h"
  34 #include "shader/prog_parameter.h"
  35 #include "shader/program.h"
  36 #include "shader/programopt.h"
  37 #include "tnl/tnl.h"
  38
  39 #include "brw_context.h"
  40 #include "brw_wm.h"
  41
  42 static void brwBindProgram( GLcontext *ctx,
  43                             GLenum target,
  44                             struct gl_program *prog )
  45 {
  46    struct brw_context *brw = brw_context(ctx);
  47
  48    switch (target) {
  49    case GL_VERTEX_PROGRAM_ARB:
  50       brw->state.dirty.brw |= BRW_NEW_VERTEX_PROGRAM;
  51       break;
  52    case GL_FRAGMENT_PROGRAM_ARB:
  53       brw->state.dirty.brw |= BRW_NEW_FRAGMENT_PROGRAM;
  54       break;
  55    }
  56 }
  57
  58 static struct gl_program *brwNewProgram( GLcontext *ctx,
  59                                       GLenum target,
  60                                       GLuint id )
  61 {
  62    struct brw_context *brw = brw_context(ctx);
  63
  64    switch (target) {
  65    case GL_VERTEX_PROGRAM_ARB: {
  66       struct brw_vertex_program *prog = CALLOC_STRUCT(brw_vertex_program);
  67       if (prog) {
  68          prog->id = brw->program_id++;
  69
  70          return _mesa_init_vertex_program( ctx, &prog->program,
  71                                              target, id );
  72       }
  73       else
  74          return NULL;
  75    }
  76
  77    case GL_FRAGMENT_PROGRAM_ARB: {
  78       struct brw_fragment_program *prog = CALLOC_STRUCT(brw_fragment_program);
  79       if (prog) {
  80          prog->id = brw->program_id++;
  81
  82          return _mesa_init_fragment_program( ctx, &prog->program,
  83                                              target, id );
  84       }
  85       else
  86          return NULL;
  87    }
  88
  89    default:
  90       return _mesa_new_program(ctx, target, id);
  91    }
  92 }
  93
  94 static void brwDeleteProgram( GLcontext *ctx,
  95                               struct gl_program *prog )
  96 {
  97    if (prog->Target == GL_FRAGMENT_PROGRAM_ARB) {
  98       struct gl_fragment_program *fprog = (struct gl_fragment_program *) prog;
  99       struct brw_fragment_program *brw_fprog = brw_fragment_program(fprog);
 100       dri_bo_unreference(brw_fprog->const_buffer);
 101    }
 102
 103    _mesa_delete_program( ctx, prog );
 104 }
 105
 106
 107 static GLboolean brwIsProgramNative( GLcontext *ctx,
 108                                      GLenum target,
 109                                      struct gl_program *prog )
 110 {
 111    return GL_TRUE;
 112 }
 113
 114
 115 static GLboolean brwProgramStringNotify( GLcontext *ctx,
 116                                          GLenum target,
 117                                          struct gl_program *prog )
 118 {
 119    struct brw_context *brw = brw_context(ctx);
 120
 121    if (target == GL_FRAGMENT_PROGRAM_ARB) {
 122       struct gl_fragment_program *fprog = (struct gl_fragment_program *) prog;
 123       struct brw_fragment_program *newFP = brw_fragment_program(fprog);
 124       const struct brw_fragment_program *curFP =
 125          brw_fragment_program_const(brw->fragment_program);
 126
 127       if (fprog->FogOption) {
 128          _mesa_append_fog_code(ctx, fprog);
 129          fprog->FogOption = GL_NONE;
 130       }
 131
 132       if (newFP == curFP)
 133          brw->state.dirty.brw |= BRW_NEW_FRAGMENT_PROGRAM;
 134       newFP->id = brw->program_id++;
 135       newFP->isGLSL = brw_wm_is_glsl(fprog);
 136    }
 137    else if (target == GL_VERTEX_PROGRAM_ARB) {
 138       struct gl_vertex_program *vprog = (struct gl_vertex_program *) prog;
 139       struct brw_vertex_program *newVP = brw_vertex_program(vprog);
 140       const struct brw_vertex_program *curVP =
 141          brw_vertex_program_const(brw->vertex_program);
 142
 143       if (newVP == curVP)
 144          brw->state.dirty.brw |= BRW_NEW_VERTEX_PROGRAM;
 145       if (newVP->program.IsPositionInvariant) {
 146          _mesa_insert_mvp_code(ctx, &newVP->program);
 147       }
 148       newVP->id = brw->program_id++;
 149
 150       /* Also tell tnl about it:
 151        */
 152       _tnl_program_string(ctx, target, prog);
 153    }
 154
 155    /* XXX check if program is legal, within limits */
 156    return GL_TRUE;
 157 }
 158
 159 void brwInitFragProgFuncs( struct dd_function_table *functions )
 160 {
 161    assert(functions->ProgramStringNotify == _tnl_program_string);
 162
 163    functions->BindProgram = brwBindProgram;
 164    functions->NewProgram = brwNewProgram;
 165    functions->DeleteProgram = brwDeleteProgram;
 166    functions->IsProgramNative = brwIsProgramNative;
 167    functions->ProgramStringNotify = brwProgramStringNotify;
 168 }
 169