src/mesa/main/hint.c

   1
   2 /*
   3  * Mesa 3-D graphics library
   4  *
   5  * Copyright (C) 1999-2002  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  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26
  27 #include "glheader.h"
  28 #include "enums.h"
  29 #include "context.h"
  30 #include "hint.h"
  31 #include "util/imports.h"
  32 #include "mtypes.h"
  33
  34
  35
  36 void GLAPIENTRY
  37 _mesa_Hint( GLenum target, GLenum mode )
  38 {
  39    GET_CURRENT_CONTEXT(ctx);
  40
  41    if (MESA_VERBOSE & VERBOSE_API)
  42       _mesa_debug(ctx, "glHint %s %s\n",
  43                   _mesa_enum_to_string(target),
  44                   _mesa_enum_to_string(mode));
  45
  46    if (mode != GL_NICEST && mode != GL_FASTEST && mode != GL_DONT_CARE) {
  47       _mesa_error(ctx, GL_INVALID_ENUM, "glHint(mode)");
  48       return;
  49    }
  50
  51    switch (target) {
  52       case GL_FOG_HINT:
  53          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
  54             goto invalid_target;
  55          if (ctx->Hint.Fog == mode)
  56             return;
  57          FLUSH_VERTICES(ctx, _NEW_HINT);
  58          ctx->Hint.Fog = mode;
  59          break;
  60       case GL_LINE_SMOOTH_HINT:
  61          if (!_mesa_is_desktop_gl(ctx) && ctx->API != API_OPENGLES)
  62             goto invalid_target;
  63          if (ctx->Hint.LineSmooth == mode)
  64             return;
  65          FLUSH_VERTICES(ctx, _NEW_HINT);
  66          ctx->Hint.LineSmooth = mode;
  67          break;
  68       case GL_PERSPECTIVE_CORRECTION_HINT:
  69          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
  70             goto invalid_target;
  71          if (ctx->Hint.PerspectiveCorrection == mode)
  72             return;
  73          FLUSH_VERTICES(ctx, _NEW_HINT);
  74          ctx->Hint.PerspectiveCorrection = mode;
  75          break;
  76       case GL_POINT_SMOOTH_HINT:
  77          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
  78             goto invalid_target;
  79          if (ctx->Hint.PointSmooth == mode)
  80             return;
  81          FLUSH_VERTICES(ctx, _NEW_HINT);
  82          ctx->Hint.PointSmooth = mode;
  83          break;
  84       case GL_POLYGON_SMOOTH_HINT:
  85          if (!_mesa_is_desktop_gl(ctx))
  86             goto invalid_target;
  87          if (ctx->Hint.PolygonSmooth == mode)
  88             return;
  89          FLUSH_VERTICES(ctx, _NEW_HINT);
  90          ctx->Hint.PolygonSmooth = mode;
  91          break;
  92
  93       /* GL_ARB_texture_compression */
  94       case GL_TEXTURE_COMPRESSION_HINT_ARB:
  95          if (!_mesa_is_desktop_gl(ctx))
  96             goto invalid_target;
  97          if (ctx->Hint.TextureCompression == mode)
  98             return;
  99          FLUSH_VERTICES(ctx, _NEW_HINT);
 100          ctx->Hint.TextureCompression = mode;
 101          break;
 102
 103       /* GL_SGIS_generate_mipmap */
 104       case GL_GENERATE_MIPMAP_HINT_SGIS:
 105          if (ctx->API == API_OPENGL_CORE)
 106             goto invalid_target;
 107          if (ctx->Hint.GenerateMipmap == mode)
 108             return;
 109          FLUSH_VERTICES(ctx, _NEW_HINT);
 110          ctx->Hint.GenerateMipmap = mode;
 111          break;
 112
 113       /* GL_ARB_fragment_shader */
 114       case GL_FRAGMENT_SHADER_DERIVATIVE_HINT_ARB:
 115          if (ctx->API == API_OPENGLES || !ctx->Extensions.ARB_fragment_shader)
 116             goto invalid_target;
 117          if (ctx->Hint.FragmentShaderDerivative == mode)
 118             return;
 119          FLUSH_VERTICES(ctx, _NEW_HINT);
 120          ctx->Hint.FragmentShaderDerivative = mode;
 121          break;
 122
 123       default:
 124          goto invalid_target;
 125    }
 126    return;
 127
 128 invalid_target:
 129    _mesa_error(ctx, GL_INVALID_ENUM, "glHint(target)");
 130    return;
 131 }
 132
 133 /* GL_ARB_parallel_shader_compile */
 134 void GLAPIENTRY
 135 _mesa_MaxShaderCompilerThreadsKHR(GLuint count)
 136 {
 137    GET_CURRENT_CONTEXT(ctx);
 138
 139    ctx->Hint.MaxShaderCompilerThreads = count;
 140
 141    if (ctx->Driver.SetMaxShaderCompilerThreads)
 142       ctx->Driver.SetMaxShaderCompilerThreads(ctx, count);
 143 }
 144
 145 /**********************************************************************/
 146 /*****                      Initialization                        *****/
 147 /**********************************************************************/
 148
 149 void _mesa_init_hint( struct gl_context * ctx )
 150 {
 151    /* Hint group */
 152    ctx->Hint.PerspectiveCorrection = GL_DONT_CARE;
 153    ctx->Hint.PointSmooth = GL_DONT_CARE;
 154    ctx->Hint.LineSmooth = GL_DONT_CARE;
 155    ctx->Hint.PolygonSmooth = GL_DONT_CARE;
 156    ctx->Hint.Fog = GL_DONT_CARE;
 157    ctx->Hint.TextureCompression = GL_DONT_CARE;
 158    ctx->Hint.GenerateMipmap = GL_DONT_CARE;
 159    ctx->Hint.FragmentShaderDerivative = GL_DONT_CARE;
 160    ctx->Hint.MaxShaderCompilerThreads = 0xffffffff;
 161 }