src/mesa/shader/arbfragparse.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.2
   4  *
   5  * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #define DEBUG_FP 0
  26
  27 /**
  28  * \file arbfragparse.c
  29  * ARB_fragment_program parser.
  30  * \author Karl Rasche
  31  */
  32
  33 #include "glheader.h"
  34 #include "context.h"
  35 #include "imports.h"
  36 #include "macros.h"
  37 #include "mtypes.h"
  38 #include "program.h"
  39 #include "arbprogparse.h"
  40 #include "arbfragparse.h"
  41
  42
  43 void
  44 _mesa_parse_arb_fragment_program(GLcontext * ctx, GLenum target,
  45                                  const GLubyte * str, GLsizei len,
  46                                  struct fragment_program *program)
  47 {
  48    GLuint i;
  49    struct arb_program ap;
  50    struct prog_instruction *newInstructions;
  51    (void) target;
  52
  53    /* set the program target before parsing */
  54    ap.Base.Target = GL_FRAGMENT_PROGRAM_ARB;
  55
  56    if (!_mesa_parse_arb_program(ctx, str, len, &ap)) {
  57       /* Error in the program. Just return. */
  58       return;
  59    }
  60
  61    /* Copy the relevant contents of the arb_program struct into the
  62     * fragment_program struct.
  63     */
  64    /* copy instruction buffer */
  65    newInstructions = (struct prog_instruction *)
  66       _mesa_malloc(ap.Base.NumInstructions * sizeof(struct prog_instruction));
  67    if (!newInstructions) {
  68       _mesa_error(ctx, GL_OUT_OF_MEMORY, "glProgramStringARB");
  69       return;
  70    }
  71    _mesa_memcpy(newInstructions, ap.FPInstructions,
  72                 ap.Base.NumInstructions * sizeof(struct prog_instruction));
  73    if (program->Instructions)
  74       _mesa_free(program->Instructions);
  75    program->Instructions = newInstructions;
  76    program->Base.String          = ap.Base.String;
  77    program->Base.NumInstructions = ap.Base.NumInstructions;
  78    program->Base.NumTemporaries  = ap.Base.NumTemporaries;
  79    program->Base.NumParameters   = ap.Base.NumParameters;
  80    program->Base.NumAttributes   = ap.Base.NumAttributes;
  81    program->Base.NumAddressRegs  = ap.Base.NumAddressRegs;
  82    program->NumAluInstructions = ap.NumAluInstructions;
  83    program->NumTexInstructions = ap.NumTexInstructions;
  84    program->NumTexIndirections = ap.NumTexIndirections;
  85    program->InputsRead     = ap.InputsRead;
  86    program->OutputsWritten = ap.OutputsWritten;
  87    for (i = 0; i < MAX_TEXTURE_IMAGE_UNITS; i++)
  88       program->TexturesUsed[i] = ap.TexturesUsed[i];
  89
  90    if (program->Parameters) {
  91       /* free previous program's parameters */
  92       _mesa_free_parameter_list(program->Parameters);
  93    }
  94    program->Parameters         = ap.Parameters;
  95    program->FogOption          = ap.FogOption;
  96
  97 #if DEBUG_FP
  98    _mesa_print_program(ap.Base.NumInstructions, ap.FPInstructions);
  99 #endif
 100 }