C++ ASSERT_OUTSIDE_BEGIN_END函数代码示例

/**
 * Set a program parameter register.
 * \note Called from the GL API dispatcher.
 */
void _mesa_ProgramParameter4fvNV(GLenum target, GLuint index,
                                 const GLfloat *params)
{
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END(ctx);

   if (target != GL_VERTEX_PROGRAM_NV) {
      _mesa_error(ctx, GL_INVALID_ENUM, "glProgramParameter4fNV");
      return;
   }

   if (index >= VP_NUM_PROG_REGS) {
      _mesa_error(ctx, GL_INVALID_VALUE, "glProgramParameter4fNV");
      return;
   }

   index += VP_PROG_REG_START;
   COPY_4V(ctx->VertexProgram.Machine.Registers[index], params);
}

void GLAPIENTRY
_mesa_ClipControl(GLenum origin, GLenum depth)
{
   GET_CURRENT_CONTEXT(ctx);

   if (MESA_VERBOSE & VERBOSE_API)
      _mesa_debug(ctx, "glClipControl(%s, %s)\n",
	          _mesa_enum_to_string(origin),
                  _mesa_enum_to_string(depth));

   ASSERT_OUTSIDE_BEGIN_END(ctx);

   if (!ctx->Extensions.ARB_clip_control) {
      _mesa_error(ctx, GL_INVALID_OPERATION, "glClipControl");
      return;
   }

   clip_control(ctx, origin, depth, false);
}

/**
 * Generate texture names.
 *
 * \param n number of texture names to be generated.
 * \param textures an array in which will hold the generated texture names.
 *
 * \sa glGenTextures().
 *
 * Calls _mesa_HashFindFreeKeyBlock() to find a block of free texture
 * IDs which are stored in \p textures.  Corresponding empty texture
 * objects are also generated.
 */ 
void GLAPIENTRY
_mesa_GenTextures( GLsizei n, GLuint *textures )
{
   GET_CURRENT_CONTEXT(ctx);
   GLuint first;
   GLint i;
   ASSERT_OUTSIDE_BEGIN_END(ctx);

   if (n < 0) {
      _mesa_error( ctx, GL_INVALID_VALUE, "glGenTextures" );
      return;
   }

   if (!textures)
      return;

   /*
    * This must be atomic (generation and allocation of texture IDs)
    */
   _glthread_LOCK_MUTEX(ctx->Shared->Mutex);

   first = _mesa_HashFindFreeKeyBlock(ctx->Shared->TexObjects, n);

   /* Allocate new, empty texture objects */
   for (i = 0; i < n; i++) {
      struct gl_texture_object *texObj;
      GLuint name = first + i;
      GLenum target = 0;
      texObj = ctx->Driver.NewTextureObject(ctx, name, target);
      if (!texObj) {
         _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenTextures");
         return;
      }

      /* insert into hash table */
      _mesa_HashInsert(ctx->Shared->TexObjects, texObj->Name, texObj);

      textures[i] = name;
   }

   _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
}

static void GLAPIENTRY
_mesa_GetPixelMapfv( GLenum map, GLfloat *values )
{
   GET_CURRENT_CONTEXT(ctx);
   GLuint mapsize, i;
   const struct gl_pixelmap *pm;

   ASSERT_OUTSIDE_BEGIN_END(ctx);

   pm = get_pixelmap(ctx, map);
   if (!pm) {
      _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapfv(map)");
      return;
   }

   mapsize = pm->Size;

   if (!validate_pbo_access(ctx, &ctx->Pack, mapsize,
                            GL_INTENSITY, GL_FLOAT, values)) {
      return;
   }

   values = (GLfloat *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values);
   if (!values) {
      if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
         _mesa_error(ctx, GL_INVALID_OPERATION,
                     "glGetPixelMapfv(PBO is mapped)");
      }
      return;
   }

   if (map == GL_PIXEL_MAP_S_TO_S) {
      /* special case */
      for (i = 0; i < mapsize; i++) {
         values[i] = (GLfloat) ctx->PixelMaps.StoS.Map[i];
      }
   }
   else {
      memcpy(values, pm->Map, mapsize * sizeof(GLfloat));
   }

   _mesa_unmap_pbo_dest(ctx, &ctx->Pack);
}

/**
 * Set the line stipple pattern.
 *
 * \param factor pattern scale factor.
 * \param pattern bit pattern.
 * 
 * \sa glLineStipple().
 *
 * Updates gl_line_attrib::StippleFactor and gl_line_attrib::StipplePattern. On
 * change flushes the vertices and notifies the driver via
 * the dd_function_table::LineStipple callback.
 */
void GLAPIENTRY
_mesa_LineStipple( GLint factor, GLushort pattern )
{
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END(ctx);

   factor = CLAMP( factor, 1, 256 );

   if (ctx->Line.StippleFactor == factor &&
       ctx->Line.StipplePattern == pattern)
      return;

   FLUSH_VERTICES(ctx, _NEW_LINE);
   ctx->Line.StippleFactor = factor;
   ctx->Line.StipplePattern = pattern;

   if (ctx->Driver.LineStipple)
      ctx->Driver.LineStipple( ctx, factor, pattern );
}

void GLAPIENTRY
_mesa_GetTexGenfv( GLenum coord, GLenum pname, GLfloat *params )
{
   struct gl_texture_unit *texUnit;
   struct gl_texgen *texgen;
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END(ctx);

   if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexGenfv(current unit)");
      return;
   }

   texUnit = _mesa_get_current_tex_unit(ctx);

   texgen = get_texgen(ctx, texUnit, coord);
   if (!texgen) {
      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexGenfv(coord)");
      return;
   }

   switch (pname) {
   case GL_TEXTURE_GEN_MODE:
      params[0] = ENUM_TO_FLOAT(texgen->Mode);
      break;
   case GL_OBJECT_PLANE:
      if (ctx->API != API_OPENGL) {
         _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(param)" );
         return;
      }
      COPY_4V(params, texgen->ObjectPlane);
      break;
   case GL_EYE_PLANE:
      if (ctx->API != API_OPENGL) {
         _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(param)" );
         return;
      }
      COPY_4V(params, texgen->EyePlane);
      break;
   default:
      _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
   }
}

void GLAPIENTRY
_mesa_ClearDepth( GLclampd depth )
{
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END(ctx);

   if (MESA_VERBOSE & VERBOSE_API)
      _mesa_debug(ctx, "glClearDepth(%f)\n", depth);

   depth = CLAMP( depth, 0.0, 1.0 );

   if (ctx->Depth.Clear == depth)
      return;

   FLUSH_VERTICES(ctx, _NEW_DEPTH);
   ctx->Depth.Clear = depth;
   if (ctx->Driver.ClearDepth)
      (*ctx->Driver.ClearDepth)( ctx, ctx->Depth.Clear );
}

void GLAPIENTRY
_mesa_DisableVertexAttribArrayARB(GLuint index)
{
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END(ctx);

   if (index >= ctx->Const.VertexProgram.MaxAttribs) {
      _mesa_error(ctx, GL_INVALID_VALUE,
                  "glEnableVertexAttribArrayARB(index)");
      return;
   }

   ASSERT(index < Elements(ctx->Array.ArrayObj->VertexAttrib));

   FLUSH_VERTICES(ctx, _NEW_ARRAY);
   ctx->Array.ArrayObj->VertexAttrib[index].Enabled = GL_FALSE;
   ctx->Array.ArrayObj->_Enabled &= ~_NEW_ARRAY_ATTRIB(index);
   ctx->Array.NewState |= _NEW_ARRAY_ATTRIB(index);
}

/** New in GL 3.0 */
void GLAPIENTRY
_mesa_GetTexParameterIiv(GLenum target, GLenum pname, GLint *params)
{
   struct gl_texture_object *texObj;
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END(ctx);

   texObj = get_texobj(ctx, target, GL_TRUE);
   if (!texObj)
      return;
   
   switch (pname) {
   case GL_TEXTURE_BORDER_COLOR:
      COPY_4V(params, texObj->Sampler.BorderColor.i);
      break;
   default:
      _mesa_GetTexParameteriv(target, pname, params);
   }
}

/**
 * Establish a buffer for selection mode values.
 * 
 * \param size buffer size.
 * \param buffer buffer.
 *
 * \sa glSelectBuffer().
 * 
 * \note this function can't be put in a display list.
 * 
 * Verifies we're not in selection mode, flushes the vertices and initialize
 * the fields in __struct gl_contextRec::Select with the given buffer.
 */
static void GLAPIENTRY
_mesa_SelectBuffer( GLsizei size, GLuint *buffer )
{
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END(ctx);

   if (ctx->RenderMode==GL_SELECT) {
      _mesa_error( ctx, GL_INVALID_OPERATION, "glSelectBuffer" );
      return;			/* KW: added return */
   }

   FLUSH_VERTICES(ctx, _NEW_RENDERMODE); 
   ctx->Select.Buffer = buffer;
   ctx->Select.BufferSize = size;
   ctx->Select.BufferCount = 0;
   ctx->Select.HitFlag = GL_FALSE;
   ctx->Select.HitMinZ = 1.0;
   ctx->Select.HitMaxZ = 0.0;
}

void GLAPIENTRY
_mesa_GetQueryObjectuivARB(GLuint id, GLenum pname, GLuint *params)
{
   struct gl_query_object *q = NULL;
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END(ctx);

   if (id)
      q = lookup_query_object(ctx, id);

   if (!q || q->Active) {
      _mesa_error(ctx, GL_INVALID_OPERATION,
                  "glGetQueryObjectuivARB(id=%d is invalid or active)", id);
      return;
   }

   switch (pname) {
      case GL_QUERY_RESULT_ARB:
         while (!q->Ready) {
            /* Wait for the query to finish! */
            /* If using software rendering, the result will always be ready
             * by time we get here.  Otherwise, we must be using hardware!
             */
            ASSERT(ctx->Driver.EndQuery);
         }
         /* if result is too large for returned type, clamp to max value */
         if (q->Result > 0xffffffff) {
            *params = 0xffffffff;
         }
         else {
            *params = q->Result;
         }
         break;
      case GL_QUERY_RESULT_AVAILABLE_ARB:
         /* XXX revisit when we have a hardware implementation! */
         *params = q->Ready;
         break;
      default:
         _mesa_error(ctx, GL_INVALID_ENUM, "glGetQueryObjectuivARB(pname)");
         return;
   }
}

static void GLAPIENTRY
_mesa_PixelMapusv(GLenum map, GLsizei mapsize, const GLushort *values )
{
   GLfloat fvalues[MAX_PIXEL_MAP_TABLE];
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END(ctx);

   if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) {
      _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapusv(mapsize)" );
      return;
   }

   if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) {
      /* test that mapsize is a power of two */
      if (!_mesa_is_pow_two(mapsize)) {
	 _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" );
         return;
      }
   }

   FLUSH_VERTICES(ctx, _NEW_PIXEL);

   if (!values) {
      return;
   }

   /* convert to floats */
   if (map == GL_PIXEL_MAP_I_TO_I || map == GL_PIXEL_MAP_S_TO_S) {
      GLint i;
      for (i = 0; i < mapsize; i++) {
         fvalues[i] = (GLfloat) values[i];
      }
   }
   else {
      GLint i;
      for (i = 0; i < mapsize; i++) {
         fvalues[i] = USHORT_TO_FLOAT( values[i] );
      }
   }

   store_pixelmap(ctx, map, mapsize, fvalues);
}

void GLAPIENTRY
_mesa_EndQueryARB(GLenum target)
{
   struct gl_query_object *q;
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END(ctx);

   FLUSH_VERTICES(ctx, _NEW_DEPTH);

   switch (target) {
      case GL_SAMPLES_PASSED_ARB:
         if (!ctx->Extensions.ARB_occlusion_query) {
            _mesa_error(ctx, GL_INVALID_ENUM, "glEndQueryARB(target)");
            return;
         }
         q = ctx->Query.CurrentOcclusionObject;
         ctx->Query.CurrentOcclusionObject = NULL;
         break;
#if FEATURE_EXT_timer_query
      case GL_TIME_ELAPSED_EXT:
         if (!ctx->Extensions.EXT_timer_query) {
            _mesa_error(ctx, GL_INVALID_ENUM, "glEndQueryARB(target)");
            return;
         }
         q = ctx->Query.CurrentTimerObject;
         ctx->Query.CurrentTimerObject = NULL;
         break;
#endif
      default:
         _mesa_error(ctx, GL_INVALID_ENUM, "glEndQueryARB(target)");
         return;
   }

   if (!q || !q->Active) {
      _mesa_error(ctx, GL_INVALID_OPERATION,
                  "glEndQueryARB(no matching glBeginQueryARB)");
      return;
   }

   q->Active = GL_FALSE;
   ctx->Driver.EndQuery(ctx, q);
}

void GLAPIENTRY
_mesa_TexParameteri(GLenum target, GLenum pname, GLint param)
{
   GLboolean need_update;
   struct gl_texture_object *texObj;
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END(ctx);

   texObj = get_texobj(ctx, target, GL_FALSE);
   if (!texObj)
      return;

   switch (pname) {
   case GL_TEXTURE_MIN_LOD:
   case GL_TEXTURE_MAX_LOD:
   case GL_TEXTURE_PRIORITY:
   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
   case GL_TEXTURE_LOD_BIAS:
   case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
      {
         GLfloat fparam[4];
         fparam[0] = (GLfloat) param;
         fparam[1] = fparam[2] = fparam[3] = 0.0F;
         /* convert int param to float */
         need_update = set_tex_parameterf(ctx, texObj, pname, fparam);
      }
      break;
   default:
      /* this will generate an error if pname is illegal */
      {
         GLint iparam[4];
         iparam[0] = param;
         iparam[1] = iparam[2] = iparam[3] = 0;
         need_update = set_tex_parameteri(ctx, texObj, pname, iparam);
      }
   }

   if (ctx->Driver.TexParameter && need_update) {
      GLfloat fparam = (GLfloat) param;
      ctx->Driver.TexParameter(ctx, target, texObj, pname, &fparam);
   }
}

void GLAPIENTRY
_mesa_ProgramEnvParameters4fvEXT(GLenum target, GLuint index, GLsizei count,
				 const GLfloat *params)
{
   GET_CURRENT_CONTEXT(ctx);
   GLint i;
   GLfloat * dest;
   ASSERT_OUTSIDE_BEGIN_END(ctx);

   FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);

   if (count <= 0) {
      _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(count)");
   }

   if (target == GL_FRAGMENT_PROGRAM_ARB
       && ctx->Extensions.ARB_fragment_program) {
      if ((index + count) > ctx->Const.FragmentProgram.MaxEnvParams) {
         _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(index + count)");
         return;
      }
      dest = ctx->FragmentProgram.Parameters[index];
   }
   else if (target == GL_VERTEX_PROGRAM_ARB
       && ctx->Extensions.ARB_vertex_program) {
      if ((index + count) > ctx->Const.VertexProgram.MaxEnvParams) {
         _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(index + count)");
         return;
      }
      dest = ctx->VertexProgram.Parameters[index];
   }
   else {
      _mesa_error(ctx, GL_INVALID_ENUM, "glProgramEnvParameters4fv(target)");
      return;
   }

   for ( i = 0 ; i < count ; i++ ) {
      COPY_4V(dest, params);
      params += 4;
      dest += 4;
   }
}