reactos/dll/opengl/mesa/src/mesa/main/getstring.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.1
   4  *
   5  * Copyright (C) 1999-2008  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 "context.h"
  29 #include "get.h"
  30 #include "enums.h"
  31 #include "extensions.h"
  32 #include "mfeatures.h"
  33 #include "mtypes.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
  54    if (!ctx)
  55       return NULL;
  56
  57    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
  58
  59    /* this is a required driver function */
  60    assert(ctx->Driver.GetString);
  61    {
  62       /* Give the driver the chance to handle this query */
  63       const GLubyte *str = (*ctx->Driver.GetString)(ctx, name);
  64       if (str)
  65          return str;
  66    }
  67
  68    switch (name) {
  69       case GL_VENDOR:
  70          return (const GLubyte *) vendor;
  71       case GL_RENDERER:
  72          return (const GLubyte *) renderer;
  73       case GL_VERSION:
  74          return (const GLubyte *) ctx->VersionString;
  75       case GL_EXTENSIONS:
  76          return (const GLubyte *) ctx->Extensions.String;
  77       default:
  78          _mesa_error( ctx, GL_INVALID_ENUM, "glGetString" );
  79          return (const GLubyte *) 0;
  80    }
  81 }
  82
  83
  84 /**
  85  * GL3
  86  */
  87 const GLubyte * GLAPIENTRY
  88 _mesa_GetStringi(GLenum name, GLuint index)
  89 {
  90    GET_CURRENT_CONTEXT(ctx);
  91
  92    if (!ctx)
  93       return NULL;
  94
  95    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
  96
  97    switch (name) {
  98    case GL_EXTENSIONS:
  99       if (index >= _mesa_get_extension_count(ctx)) {
 100          _mesa_error(ctx, GL_INVALID_VALUE, "glGetStringi(index=%u)", index);
 101          return (const GLubyte *) 0;
 102       }
 103       return _mesa_get_enabled_extension(ctx, index);
 104    default:
 105       _mesa_error( ctx, GL_INVALID_ENUM, "glGetString" );
 106       return (const GLubyte *) 0;
 107    }
 108 }
 109
 110
 111
 112 /**
 113  * Return pointer-valued state, such as a vertex array pointer.
 114  *
 115  * \param pname  names state to be queried
 116  * \param params  returns the pointer value
 117  *
 118  * \sa glGetPointerv().
 119  *
 120  * Tries to get the specified pointer via dd_function_table::GetPointerv,
 121  * otherwise gets the specified pointer from the current context.
 122  */
 123 void GLAPIENTRY
 124 _mesa_GetPointerv( GLenum pname, GLvoid **params )
 125 {
 126    GET_CURRENT_CONTEXT(ctx);
 127    ASSERT_OUTSIDE_BEGIN_END(ctx);
 128
 129    if (!params)
 130       return;
 131
 132    if (MESA_VERBOSE & VERBOSE_API)
 133       _mesa_debug(ctx, "glGetPointerv %s\n", _mesa_lookup_enum_by_nr(pname));
 134
 135    switch (pname) {
 136       case GL_VERTEX_ARRAY_POINTER:
 137          *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POS].Ptr;
 138          break;
 139       case GL_NORMAL_ARRAY_POINTER:
 140          *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_NORMAL].Ptr;
 141          break;
 142       case GL_COLOR_ARRAY_POINTER:
 143          *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR0].Ptr;
 144          break;
 145       case GL_SECONDARY_COLOR_ARRAY_POINTER_EXT:
 146          *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR1].Ptr;
 147          break;
 148       case GL_FOG_COORDINATE_ARRAY_POINTER_EXT:
 149          *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_FOG].Ptr;
 150          break;
 151       case GL_INDEX_ARRAY_POINTER:
 152          *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Ptr;
 153          break;
 154       case GL_TEXTURE_COORD_ARRAY_POINTER:
 155          *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX].Ptr;
 156          break;
 157       case GL_EDGE_FLAG_ARRAY_POINTER:
 158          *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_EDGEFLAG].Ptr;
 159          break;
 160       case GL_FEEDBACK_BUFFER_POINTER:
 161          *params = ctx->Feedback.Buffer;
 162          break;
 163       case GL_SELECTION_BUFFER_POINTER:
 164          *params = ctx->Select.Buffer;
 165          break;
 166 #if FEATURE_point_size_array
 167       case GL_POINT_SIZE_ARRAY_POINTER_OES:
 168          *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POINT_SIZE].Ptr;
 169          break;
 170 #endif
 171       default:
 172          _mesa_error( ctx, GL_INVALID_ENUM, "glGetPointerv" );
 173          return;
 174    }
 175 }
 176
 177
 178 /**
 179  * Returns the current GL error code, or GL_NO_ERROR.
 180  * \return current error code
 181  *
 182  * Returns __struct gl_contextRec::ErrorValue.
 183  */
 184 GLenum GLAPIENTRY
 185 _mesa_GetError( void )
 186 {
 187    GET_CURRENT_CONTEXT(ctx);
 188    GLenum e = ctx->ErrorValue;
 189    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
 190
 191    if (MESA_VERBOSE & VERBOSE_API)
 192       _mesa_debug(ctx, "glGetError <-- %s\n", _mesa_lookup_enum_by_nr(e));
 193
 194    ctx->ErrorValue = (GLenum) GL_NO_ERROR;
 195    ctx->ErrorDebugCount = 0;
 196    return e;
 197 }
 198
 199 /**
 200  * Returns an error code specified by GL_ARB_robustness, or GL_NO_ERROR.
 201  * \return current context status
 202  */
 203 GLenum GLAPIENTRY
 204 _mesa_GetGraphicsResetStatusARB( void )
 205 {
 206    GET_CURRENT_CONTEXT(ctx);
 207    GLenum status = ctx->ResetStatus;
 208
 209    if (MESA_VERBOSE & VERBOSE_API)
 210       _mesa_debug(ctx, "glGetGraphicsResetStatusARB"
 211                        "(always returns GL_NO_ERROR)\n");
 212
 213    return status;
 214 }