src/mesa/main/hint.c

   1 /* $Id: hint.c,v 1.6 2000/12/26 05:09:28 keithw Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.3
   6  *
   7  * Copyright (C) 1999-2000  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
  28 #ifdef PC_HEADER
  29 #include "all.h"
  30 #else
  31 #include "glheader.h"
  32 #include "enums.h"
  33 #include "context.h"
  34 #include "hint.h"
  35 #include "state.h"
  36 #endif
  37
  38
  39
  40 void
  41 _mesa_Hint( GLenum target, GLenum mode )
  42 {
  43    GET_CURRENT_CONTEXT(ctx);
  44    ASSERT_OUTSIDE_BEGIN_END(ctx);
  45    (void) _mesa_try_Hint( ctx, target, mode );
  46 }
  47
  48
  49 GLboolean
  50 _mesa_try_Hint( GLcontext *ctx, GLenum target, GLenum mode )
  51 {
  52    if (MESA_VERBOSE & VERBOSE_API)
  53       fprintf(stderr, "glHint %s %d\n", gl_lookup_enum_by_nr(target), mode);
  54
  55    if (mode != GL_NICEST && mode != GL_FASTEST && mode != GL_DONT_CARE) {
  56       gl_error(ctx, GL_INVALID_ENUM, "glHint(mode)");
  57       return GL_FALSE;
  58    }
  59
  60    switch (target) {
  61       case GL_FOG_HINT:
  62          if (ctx->Hint.Fog == mode)
  63             return GL_TRUE;
  64          FLUSH_VERTICES(ctx, _NEW_HINT);
  65          ctx->Hint.Fog = mode;
  66          break;
  67       case GL_LINE_SMOOTH_HINT:
  68          if (ctx->Hint.LineSmooth == mode)
  69             return GL_TRUE;
  70          FLUSH_VERTICES(ctx, _NEW_HINT);
  71          ctx->Hint.LineSmooth = mode;
  72          break;
  73       case GL_PERSPECTIVE_CORRECTION_HINT:
  74          if (ctx->Hint.PerspectiveCorrection == mode)
  75             return GL_TRUE;
  76          FLUSH_VERTICES(ctx, _NEW_HINT);
  77          ctx->Hint.PerspectiveCorrection = mode;
  78          break;
  79       case GL_POINT_SMOOTH_HINT:
  80          if (ctx->Hint.PointSmooth == mode)
  81             return GL_TRUE;
  82          FLUSH_VERTICES(ctx, _NEW_HINT);
  83          ctx->Hint.PointSmooth = mode;
  84          break;
  85       case GL_POLYGON_SMOOTH_HINT:
  86          if (ctx->Hint.PolygonSmooth == mode)
  87             return GL_TRUE;
  88          FLUSH_VERTICES(ctx, _NEW_HINT);
  89          ctx->Hint.PolygonSmooth = mode;
  90          break;
  91       case GL_PREFER_DOUBLEBUFFER_HINT_PGI:
  92       case GL_STRICT_DEPTHFUNC_HINT_PGI:
  93          break;
  94       case GL_STRICT_LIGHTING_HINT_PGI:
  95          if (ctx->Hint.StrictLighting == mode)
  96             return GL_TRUE;
  97          FLUSH_VERTICES(ctx, _NEW_HINT);
  98          ctx->Hint.StrictLighting = mode;
  99          break;
 100       case GL_STRICT_SCISSOR_HINT_PGI:
 101       case GL_FULL_STIPPLE_HINT_PGI:
 102       case GL_NATIVE_GRAPHICS_BEGIN_HINT_PGI:
 103       case GL_NATIVE_GRAPHICS_END_HINT_PGI:
 104       case GL_CONSERVE_MEMORY_HINT_PGI:
 105       case GL_RECLAIM_MEMORY_HINT_PGI:
 106          break;
 107       case GL_ALWAYS_FAST_HINT_PGI:
 108          FLUSH_VERTICES(ctx, _NEW_HINT);
 109          if (mode) {
 110             ctx->Hint.AllowDrawWin = GL_TRUE;
 111             ctx->Hint.AllowDrawFrg = GL_FALSE;
 112             ctx->Hint.AllowDrawMem = GL_FALSE;
 113          } else {
 114             ctx->Hint.AllowDrawWin = GL_TRUE;
 115             ctx->Hint.AllowDrawFrg = GL_TRUE;
 116             ctx->Hint.AllowDrawMem = GL_TRUE;
 117          }
 118          break;
 119       case GL_ALWAYS_SOFT_HINT_PGI:
 120          FLUSH_VERTICES(ctx, _NEW_HINT);
 121          ctx->Hint.AllowDrawWin = GL_TRUE;
 122          ctx->Hint.AllowDrawFrg = GL_TRUE;
 123          ctx->Hint.AllowDrawMem = GL_TRUE;
 124          break;
 125       case GL_ALLOW_DRAW_OBJ_HINT_PGI:
 126          break;
 127       case GL_ALLOW_DRAW_WIN_HINT_PGI:
 128          if (ctx->Hint.AllowDrawWin == mode)
 129             return GL_TRUE;
 130          FLUSH_VERTICES(ctx, _NEW_HINT);
 131          ctx->Hint.AllowDrawWin = mode;
 132          break;
 133       case GL_ALLOW_DRAW_FRG_HINT_PGI:
 134          if (ctx->Hint.AllowDrawFrg == mode)
 135             return GL_TRUE;
 136          FLUSH_VERTICES(ctx, _NEW_HINT);
 137          ctx->Hint.AllowDrawFrg = mode;
 138          break;
 139       case GL_ALLOW_DRAW_MEM_HINT_PGI:
 140          if (ctx->Hint.AllowDrawMem == mode)
 141             return GL_TRUE;
 142          FLUSH_VERTICES(ctx, _NEW_HINT);
 143          ctx->Hint.AllowDrawMem = mode;
 144          break;
 145       case GL_CLIP_NEAR_HINT_PGI:
 146       case GL_CLIP_FAR_HINT_PGI:
 147       case GL_WIDE_LINE_HINT_PGI:
 148       case GL_BACK_NORMALS_HINT_PGI:
 149       case GL_NATIVE_GRAPHICS_HANDLE_PGI:
 150          break;
 151
 152       /* GL_EXT_clip_volume_hint */
 153       case GL_CLIP_VOLUME_CLIPPING_HINT_EXT:
 154          if (ctx->Hint.ClipVolumeClipping == mode)
 155             return GL_TRUE;
 156          FLUSH_VERTICES(ctx, _NEW_HINT);
 157          ctx->Hint.ClipVolumeClipping = mode;
 158          break;
 159
 160       /* GL_ARB_texture_compression */
 161       case GL_TEXTURE_COMPRESSION_HINT_ARB:
 162          if (ctx->Extensions.ARB_texture_compression) {
 163             gl_error(ctx, GL_INVALID_ENUM, "glHint(target)");
 164             return GL_TRUE;
 165          }
 166          if (ctx->Hint.TextureCompression == mode)
 167             return GL_TRUE;
 168          FLUSH_VERTICES(ctx, _NEW_HINT);
 169          ctx->Hint.TextureCompression = mode;
 170          break;
 171
 172       default:
 173          gl_error(ctx, GL_INVALID_ENUM, "glHint(target)");
 174          return GL_FALSE;
 175    }
 176
 177    if (ctx->Driver.Hint) {
 178       (*ctx->Driver.Hint)( ctx, target, mode );
 179    }
 180
 181    return GL_TRUE;
 182 }
 183
 184
 185 void
 186 _mesa_HintPGI( GLenum target, GLint mode )
 187 {
 188    GET_CURRENT_CONTEXT(ctx);
 189    ASSERT_OUTSIDE_BEGIN_END(ctx);
 190
 191    if (MESA_VERBOSE & VERBOSE_API)
 192       fprintf(stderr, "glHintPGI %s %d\n", gl_lookup_enum_by_nr(target), mode);
 193
 194    if (mode != GL_NICEST && mode != GL_FASTEST && mode != GL_DONT_CARE) {
 195       gl_error(ctx, GL_INVALID_ENUM, "glHintPGI(mode)");
 196       return;
 197    }
 198
 199    switch (target) {
 200       case GL_PREFER_DOUBLEBUFFER_HINT_PGI:
 201       case GL_STRICT_DEPTHFUNC_HINT_PGI:
 202       case GL_STRICT_LIGHTING_HINT_PGI:
 203       case GL_STRICT_SCISSOR_HINT_PGI:
 204       case GL_FULL_STIPPLE_HINT_PGI:
 205       case GL_NATIVE_GRAPHICS_BEGIN_HINT_PGI:
 206       case GL_NATIVE_GRAPHICS_END_HINT_PGI:
 207       case GL_CONSERVE_MEMORY_HINT_PGI:
 208       case GL_RECLAIM_MEMORY_HINT_PGI:
 209       case GL_ALWAYS_FAST_HINT_PGI:
 210       case GL_ALWAYS_SOFT_HINT_PGI:
 211       case GL_ALLOW_DRAW_OBJ_HINT_PGI:
 212       case GL_ALLOW_DRAW_WIN_HINT_PGI:
 213       case GL_ALLOW_DRAW_FRG_HINT_PGI:
 214       case GL_ALLOW_DRAW_MEM_HINT_PGI:
 215       case GL_CLIP_NEAR_HINT_PGI:
 216       case GL_CLIP_FAR_HINT_PGI:
 217       case GL_WIDE_LINE_HINT_PGI:
 218       case GL_BACK_NORMALS_HINT_PGI:
 219       case GL_NATIVE_GRAPHICS_HANDLE_PGI:
 220          (void) _mesa_try_Hint(ctx, target, (GLenum) mode);
 221          break;
 222       default:
 223          gl_error( ctx, GL_INVALID_ENUM, "glHintPGI(target)" );
 224          return;
 225    }
 226 }
 227
 228