src/mesa/main/api_validate.c

   1 /* $Id: api_validate.c,v 1.6 2002/04/21 21:04:46 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  4.1
   6  *
   7  * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27 #include "glheader.h"
  28 #include "api_validate.h"
  29 #include "context.h"
  30 #include "mtypes.h"
  31 #include "state.h"
  32
  33
  34 GLboolean
  35 _mesa_validate_DrawElements(GLcontext *ctx,
  36                             GLenum mode, GLsizei count, GLenum type,
  37                             const GLvoid *indices)
  38 {
  39    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx,  GL_FALSE);
  40
  41    if (count <= 0) {
  42       if (count < 0)
  43          _mesa_error(ctx, GL_INVALID_VALUE, "glDrawElements(count)" );
  44       return GL_FALSE;
  45    }
  46
  47    if (mode < 0 ||
  48        mode > GL_POLYGON) {
  49       _mesa_error(ctx, GL_INVALID_ENUM, "glDrawArrays(mode)" );
  50       return GL_FALSE;
  51    }
  52
  53    if (type != GL_UNSIGNED_INT &&
  54        type != GL_UNSIGNED_BYTE &&
  55        type != GL_UNSIGNED_SHORT)
  56    {
  57       _mesa_error(ctx, GL_INVALID_ENUM, "glDrawElements(type)" );
  58       return GL_FALSE;
  59    }
  60
  61    if (ctx->NewState)
  62       _mesa_update_state( ctx );
  63
  64    if (ctx->Array.Vertex.Enabled
  65        || (ctx->VertexProgram.Enabled && ctx->Array.VertexAttrib[0].Enabled))
  66       return GL_TRUE;
  67    else
  68       return GL_FALSE;
  69
  70    return GL_TRUE;
  71 }
  72
  73
  74 GLboolean
  75 _mesa_validate_DrawRangeElements(GLcontext *ctx, GLenum mode,
  76                                  GLuint start, GLuint end,
  77                                  GLsizei count, GLenum type,
  78                                  const GLvoid *indices)
  79 {
  80    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
  81
  82    if (count <= 0) {
  83       if (count < 0)
  84          _mesa_error(ctx, GL_INVALID_VALUE, "glDrawElements(count)" );
  85       return GL_FALSE;
  86    }
  87
  88    if (mode < 0 || mode > GL_POLYGON) {
  89       _mesa_error(ctx, GL_INVALID_ENUM, "glDrawArrays(mode)" );
  90       return GL_FALSE;
  91    }
  92
  93    if (end < start) {
  94       _mesa_error(ctx, GL_INVALID_VALUE, "glDrawRangeElements(end<start)");
  95       return GL_FALSE;
  96    }
  97
  98    if (type != GL_UNSIGNED_INT &&
  99        type != GL_UNSIGNED_BYTE &&
 100        type != GL_UNSIGNED_SHORT) {
 101       _mesa_error(ctx, GL_INVALID_ENUM, "glDrawElements(type)" );
 102       return GL_FALSE;
 103    }
 104
 105    if (ctx->NewState)
 106       _mesa_update_state( ctx );
 107
 108    if (ctx->Array.Vertex.Enabled
 109        || (ctx->VertexProgram.Enabled && ctx->Array.VertexAttrib[0].Enabled))
 110       return GL_TRUE;
 111    else
 112       return GL_FALSE;
 113 }
 114
 115
 116
 117 GLboolean
 118 _mesa_validate_DrawArrays(GLcontext *ctx,
 119                           GLenum mode, GLint start, GLsizei count)
 120 {
 121    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
 122
 123    if (count<0) {
 124       _mesa_error(ctx, GL_INVALID_VALUE, "glDrawArrays(count)" );
 125       return GL_FALSE;
 126    }
 127
 128    if (mode < 0 || mode > GL_POLYGON) {
 129       _mesa_error(ctx, GL_INVALID_ENUM, "glDrawArrays(mode)" );
 130       return GL_FALSE;
 131    }
 132
 133    if (ctx->NewState)
 134       _mesa_update_state( ctx );
 135
 136    if (ctx->Array.Vertex.Enabled
 137        || (ctx->VertexProgram.Enabled && ctx->Array.VertexAttrib[0].Enabled))
 138       return GL_TRUE;
 139    else
 140       return GL_FALSE;
 141 }