src/mesa/main/bbox.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 2016 Ilia Mirkin.  All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 /**
  27  * \file bbox.c
  28  * glPrimitiveBoundingBox function
  29  */
  30
  31 #include "bbox.h"
  32 #include "context.h"
  33
  34 void GLAPIENTRY
  35 _mesa_PrimitiveBoundingBox(
  36       GLfloat minX, GLfloat minY, GLfloat minZ, GLfloat minW,
  37       GLfloat maxX, GLfloat maxY, GLfloat maxZ, GLfloat maxW)
  38 {
  39    GET_CURRENT_CONTEXT(ctx);
  40
  41    ctx->PrimitiveBoundingBox[0] = minX;
  42    ctx->PrimitiveBoundingBox[1] = minY;
  43    ctx->PrimitiveBoundingBox[2] = minZ;
  44    ctx->PrimitiveBoundingBox[3] = minW;
  45    ctx->PrimitiveBoundingBox[4] = maxX;
  46    ctx->PrimitiveBoundingBox[5] = maxY;
  47    ctx->PrimitiveBoundingBox[6] = maxZ;
  48    ctx->PrimitiveBoundingBox[7] = maxW;
  49 }
  50
  51 void
  52 _mesa_init_bbox(struct gl_context *ctx)
  53 {
  54    ctx->PrimitiveBoundingBox[0] =
  55    ctx->PrimitiveBoundingBox[1] =
  56    ctx->PrimitiveBoundingBox[2] = -1.0f;
  57
  58    ctx->PrimitiveBoundingBox[3] =
  59    ctx->PrimitiveBoundingBox[4] =
  60    ctx->PrimitiveBoundingBox[5] =
  61    ctx->PrimitiveBoundingBox[6] =
  62    ctx->PrimitiveBoundingBox[7] = 1.0f;
  63 }