src/mesa/state_tracker/st_scissor.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2016 Ilia Mirkin
   4  * 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
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "main/macros.h"
  29 #include "main/mtypes.h"
  30 #include "pipe/p_state.h"
  31
  32 #include "st_scissor.h"
  33
  34 void
  35 st_window_rectangles_to_blit(const struct gl_context *ctx,
  36                              struct pipe_blit_info *blit)
  37 {
  38    unsigned i;
  39
  40    blit->num_window_rectangles = ctx->Scissor.NumWindowRects;
  41    blit->window_rectangle_include =
  42       ctx->Scissor.WindowRectMode == GL_INCLUSIVE_EXT;
  43    for (i = 0; i < blit->num_window_rectangles; i++) {
  44       const struct gl_scissor_rect *src_rect = &ctx->Scissor.WindowRects[i];
  45       struct pipe_scissor_state *dst_rect = &blit->window_rectangles[i];
  46       dst_rect->minx = MAX2(src_rect->X, 0);
  47       dst_rect->miny = MAX2(src_rect->Y, 0);
  48       dst_rect->maxx = MAX2(src_rect->X + src_rect->Width, 0);
  49       dst_rect->maxy = MAX2(src_rect->Y + src_rect->Height, 0);
  50    }
  51 }