src/mesa/drivers/dri/i965/intel_tex_copy.c

   1 /*
   2  * Copyright 2003 VMware, Inc.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial portions
  15  * 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
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  21  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  22  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  23  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 #include "main/mtypes.h"
  27 #include "main/enums.h"
  28 #include "main/image.h"
  29 #include "main/teximage.h"
  30 #include "main/texobj.h"
  31 #include "main/texstate.h"
  32 #include "main/fbobject.h"
  33
  34 #include "drivers/common/meta.h"
  35
  36 #include "intel_screen.h"
  37 #include "intel_mipmap_tree.h"
  38 #include "intel_fbo.h"
  39 #include "intel_tex.h"
  40 #include "brw_context.h"
  41
  42 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  43
  44
  45 static void
  46 intelCopyTexSubImage(struct gl_context *ctx, GLuint dims,
  47                      struct gl_texture_image *texImage,
  48                      GLint xoffset, GLint yoffset, GLint slice,
  49                      struct gl_renderbuffer *rb,
  50                      GLint x, GLint y,
  51                      GLsizei width, GLsizei height)
  52 {
  53    struct brw_context *brw = brw_context(ctx);
  54
  55    /* Try BLORP first.  It can handle almost everything. */
  56    if (brw_blorp_copytexsubimage(brw, rb, texImage, slice, x, y,
  57                                  xoffset, yoffset, width, height))
  58       return;
  59
  60    /* Finally, fall back to meta.  This will likely be slow. */
  61    perf_debug("%s - fallback to swrast\n", __func__);
  62    _mesa_meta_CopyTexSubImage(ctx, dims, texImage,
  63                               xoffset, yoffset, slice,
  64                               rb, x, y, width, height);
  65 }
  66
  67
  68 void
  69 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
  70 {
  71    functions->CopyTexSubImage = intelCopyTexSubImage;
  72 }