reactos/lib/mesa32/src/main/getstring.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.3
   4  *
   5  * Copyright (C) 1999-2005  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
  26
  27 #include "glheader.h"
  28 #include "colormac.h"
  29 #include "context.h"
  30 #include "get.h"
  31 #include "version.h"
  32 #include "enums.h"
  33 #include "extensions.h"
  34
  35
  36 /**
  37  * Query string-valued state.  The return value should _not_ be freed by
  38  * the caller.
  39  *
  40  * \param name  the state variable to query.
  41  *
  42  * \sa glGetString().
  43  *
  44  * Tries to get the string from dd_function_table::GetString, otherwise returns
  45  * the hardcoded strings.
  46  */
  47 const GLubyte * GLAPIENTRY
  48 _mesa_GetString( GLenum name )
  49 {
  50    GET_CURRENT_CONTEXT(ctx);
  51    static const char *vendor = "Brian Paul";
  52    static const char *renderer = "Mesa";
  53    static const char *version_1_2 = "1.2 Mesa " MESA_VERSION_STRING;
  54    static const char *version_1_3 = "1.3 Mesa " MESA_VERSION_STRING;
  55    static const char *version_1_4 = "1.4 Mesa " MESA_VERSION_STRING;
  56    static const char *version_1_5 = "1.5 Mesa " MESA_VERSION_STRING;
  57    static const char *version_2_0 = "1.5 Mesa " MESA_VERSION_STRING;/*XXX FIX*/
  58
  59    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
  60
  61    /* this is a required driver function */
  62    assert(ctx->Driver.GetString);
  63    {
  64       /* Give the driver the chance to handle this query */
  65       const GLubyte *str = (*ctx->Driver.GetString)(ctx, name);
  66       if (str)
  67          return str;
  68    }
  69
  70    switch (name) {
  71       case GL_VENDOR:
  72          return (const GLubyte *) vendor;
  73       case GL_RENDERER:
  74           return (const GLubyte *) renderer;
  75       case GL_VERSION:
  76          if (ctx->Extensions.ARB_multisample &&
  77              ctx->Extensions.ARB_multitexture &&
  78              ctx->Extensions.ARB_texture_border_clamp &&
  79              ctx->Extensions.ARB_texture_compression &&
  80              ctx->Extensions.ARB_texture_cube_map &&
  81              ctx->Extensions.EXT_texture_env_add &&
  82              ctx->Extensions.ARB_texture_env_combine &&
  83              ctx->Extensions.ARB_texture_env_dot3) {
  84             if (ctx->Extensions.ARB_depth_texture &&
  85                 ctx->Extensions.ARB_shadow &&
  86                 ctx->Extensions.ARB_texture_env_crossbar &&
  87                 ctx->Extensions.ARB_texture_mirrored_repeat &&
  88                 ctx->Extensions.ARB_window_pos &&
  89                 ctx->Extensions.EXT_blend_color &&
  90                 ctx->Extensions.EXT_blend_func_separate &&
  91                 ctx->Extensions.EXT_blend_logic_op &&
  92                 ctx->Extensions.EXT_blend_minmax &&
  93                 ctx->Extensions.EXT_blend_subtract &&
  94                 ctx->Extensions.EXT_fog_coord &&
  95                 ctx->Extensions.EXT_multi_draw_arrays &&
  96                 ctx->Extensions.EXT_point_parameters && /*aka ARB*/
  97                 ctx->Extensions.EXT_secondary_color &&
  98                 ctx->Extensions.EXT_stencil_wrap &&
  99                 ctx->Extensions.EXT_texture_lod_bias &&
 100                 ctx->Extensions.SGIS_generate_mipmap) {
 101                if (ctx->Extensions.ARB_occlusion_query &&
 102                    ctx->Extensions.ARB_vertex_buffer_object &&
 103                    ctx->Extensions.EXT_shadow_funcs) {
 104                   if (ctx->Extensions.ARB_draw_buffers &&
 105                       ctx->Extensions.ARB_point_sprite &&
 106                       ctx->Extensions.ARB_texture_non_power_of_two &&
 107                       ctx->Extensions.EXT_stencil_two_side) {
 108                      return (const GLubyte *) version_2_0;
 109                   }
 110                   else {
 111                      return (const GLubyte *) version_1_5;
 112                   }
 113                }
 114                else {
 115                   return (const GLubyte *) version_1_4;
 116                }
 117             }
 118             else {
 119                return (const GLubyte *) version_1_3;
 120             }
 121          }
 122          else {
 123             return (const GLubyte *) version_1_2;
 124          }
 125       case GL_EXTENSIONS:
 126          if (!ctx->Extensions.String)
 127             ctx->Extensions.String = _mesa_make_extension_string(ctx);
 128          return (const GLubyte *) ctx->Extensions.String;
 129 #if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program || \
 130     FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
 131       case GL_PROGRAM_ERROR_STRING_NV:
 132          if (ctx->Extensions.NV_fragment_program ||
 133              ctx->Extensions.ARB_fragment_program ||
 134              ctx->Extensions.NV_vertex_program ||
 135              ctx->Extensions.ARB_vertex_program) {
 136             return (const GLubyte *) ctx->Program.ErrorString;
 137          }
 138          /* FALL-THROUGH */
 139 #endif
 140       default:
 141          _mesa_error( ctx, GL_INVALID_ENUM, "glGetString" );
 142          return (const GLubyte *) 0;
 143    }
 144 }
 145
 146
 147 /**
 148  * Return pointer-valued state, such as a vertex array pointer.
 149  *
 150  * \param pname  names state to be queried
 151  * \param params  returns the pointer value
 152  *
 153  * \sa glGetPointerv().
 154  *
 155  * Tries to get the specified pointer via dd_function_table::GetPointerv,
 156  * otherwise gets the specified pointer from the current context.
 157  */
 158 void GLAPIENTRY
 159 _mesa_GetPointerv( GLenum pname, GLvoid **params )
 160 {
 161    GET_CURRENT_CONTEXT(ctx);
 162    const GLuint clientUnit = ctx->Array.ActiveTexture;
 163    ASSERT_OUTSIDE_BEGIN_END(ctx);
 164
 165    if (!params)
 166       return;
 167
 168    if (MESA_VERBOSE & VERBOSE_API)
 169       _mesa_debug(ctx, "glGetPointerv %s\n", _mesa_lookup_enum_by_nr(pname));
 170
 171    if (ctx->Driver.GetPointerv
 172        && (*ctx->Driver.GetPointerv)(ctx, pname, params))
 173       return;
 174
 175    switch (pname) {
 176       case GL_VERTEX_ARRAY_POINTER:
 177          *params = (GLvoid *) ctx->Array.Vertex.Ptr;
 178          break;
 179       case GL_NORMAL_ARRAY_POINTER:
 180          *params = (GLvoid *) ctx->Array.Normal.Ptr;
 181          break;
 182       case GL_COLOR_ARRAY_POINTER:
 183          *params = (GLvoid *) ctx->Array.Color.Ptr;
 184          break;
 185       case GL_SECONDARY_COLOR_ARRAY_POINTER_EXT:
 186          *params = (GLvoid *) ctx->Array.SecondaryColor.Ptr;
 187          break;
 188       case GL_FOG_COORDINATE_ARRAY_POINTER_EXT:
 189          *params = (GLvoid *) ctx->Array.FogCoord.Ptr;
 190          break;
 191       case GL_INDEX_ARRAY_POINTER:
 192          *params = (GLvoid *) ctx->Array.Index.Ptr;
 193          break;
 194       case GL_TEXTURE_COORD_ARRAY_POINTER:
 195          *params = (GLvoid *) ctx->Array.TexCoord[clientUnit].Ptr;
 196          break;
 197       case GL_EDGE_FLAG_ARRAY_POINTER:
 198          *params = (GLvoid *) ctx->Array.EdgeFlag.Ptr;
 199          break;
 200       case GL_FEEDBACK_BUFFER_POINTER:
 201          *params = ctx->Feedback.Buffer;
 202          break;
 203       case GL_SELECTION_BUFFER_POINTER:
 204          *params = ctx->Select.Buffer;
 205          break;
 206 #if FEATURE_MESA_program_debug
 207       case GL_FRAGMENT_PROGRAM_CALLBACK_FUNC_MESA:
 208          if (!ctx->Extensions.MESA_program_debug) {
 209             _mesa_error(ctx, GL_INVALID_ENUM, "glGetPointerv");
 210             return;
 211          }
 212          *params = *(GLvoid **) &ctx->FragmentProgram.Callback;
 213          break;
 214       case GL_FRAGMENT_PROGRAM_CALLBACK_DATA_MESA:
 215          if (!ctx->Extensions.MESA_program_debug) {
 216             _mesa_error(ctx, GL_INVALID_ENUM, "glGetPointerv");
 217             return;
 218          }
 219          *params = ctx->FragmentProgram.CallbackData;
 220          break;
 221       case GL_VERTEX_PROGRAM_CALLBACK_FUNC_MESA:
 222          if (!ctx->Extensions.MESA_program_debug) {
 223             _mesa_error(ctx, GL_INVALID_ENUM, "glGetPointerv");
 224             return;
 225          }
 226          *params = *(GLvoid **) &ctx->VertexProgram.Callback;
 227          break;
 228       case GL_VERTEX_PROGRAM_CALLBACK_DATA_MESA:
 229          if (!ctx->Extensions.MESA_program_debug) {
 230             _mesa_error(ctx, GL_INVALID_ENUM, "glGetPointerv");
 231             return;
 232          }
 233          *params = ctx->VertexProgram.CallbackData;
 234          break;
 235 #endif
 236       default:
 237          _mesa_error( ctx, GL_INVALID_ENUM, "glGetPointerv" );
 238          return;
 239    }
 240 }
 241
 242
 243 /**
 244  * Returns the current GL error code, or GL_NO_ERROR.
 245  * \return current error code
 246  *
 247  * Returns __GLcontextRec::ErrorValue.
 248  */
 249 GLenum GLAPIENTRY
 250 _mesa_GetError( void )
 251 {
 252    GET_CURRENT_CONTEXT(ctx);
 253    GLenum e = ctx->ErrorValue;
 254    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
 255
 256    if (MESA_VERBOSE & VERBOSE_API)
 257       _mesa_debug(ctx, "glGetError <-- %s\n", _mesa_lookup_enum_by_nr(e));
 258
 259    ctx->ErrorValue = (GLenum) GL_NO_ERROR;
 260    return e;
 261 }