1/**************************************************************************
2 *
3 * Copyright 2003 VMware, Inc.
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/mtypes.h"
29#include "main/enums.h"
30#include "main/image.h"
31#include "main/teximage.h"
32#include "main/texstate.h"
33#include "main/fbobject.h"
34
35#include "drivers/common/meta.h"
36
37#include "intel_screen.h"
38#include "intel_context.h"
39#include "intel_mipmap_tree.h"
40#include "intel_regions.h"
41#include "intel_fbo.h"
42#include "intel_tex.h"
43#include "intel_blit.h"
44
45#define FILE_DEBUG_FLAG DEBUG_TEXTURE
46
47
48static bool
49intel_copy_texsubimage(struct intel_context *intel,
50                       struct intel_texture_image *intelImage,
51                       GLint dstx, GLint dsty, GLint slice,
52                       struct intel_renderbuffer *irb,
53                       GLint x, GLint y, GLsizei width, GLsizei height)
54{
55   const GLenum internalFormat = intelImage->base.Base.InternalFormat;
56
57   intel_prepare_render(intel);
58
59   if (!intelImage->mt || !irb || !irb->mt) {
60      if (unlikely(INTEL_DEBUG & DEBUG_PERF))
61	 fprintf(stderr, "%s fail %p %p (0x%08x)\n",
62		 __func__, intelImage->mt, irb, internalFormat);
63      return false;
64   }
65
66   /* blit from src buffer to texture */
67   if (!intel_miptree_blit(intel,
68                           irb->mt, irb->mt_level, irb->mt_layer,
69                           x, y, irb->Base.Base.Name == 0,
70                           intelImage->mt, intelImage->base.Base.Level,
71                           intelImage->base.Base.Face + slice,
72                           dstx, dsty, false,
73                           width, height, GL_COPY)) {
74      return false;
75   }
76
77   return true;
78}
79
80
81static void
82intelCopyTexSubImage(struct gl_context *ctx, GLuint dims,
83                     struct gl_texture_image *texImage,
84                     GLint xoffset, GLint yoffset, GLint slice,
85                     struct gl_renderbuffer *rb,
86                     GLint x, GLint y,
87                     GLsizei width, GLsizei height)
88{
89   struct intel_context *intel = intel_context(ctx);
90
91   /* Try the BLT engine. */
92   if (intel_copy_texsubimage(intel,
93                              intel_texture_image(texImage),
94                              xoffset, yoffset, slice,
95                              intel_renderbuffer(rb), x, y, width, height)) {
96      return;
97   }
98
99   /* Otherwise, fall back to meta.  This will likely be slow. */
100   perf_debug("%s - fallback to swrast\n", __func__);
101   _mesa_meta_CopyTexSubImage(ctx, dims, texImage,
102                              xoffset, yoffset, slice,
103                              rb, x, y, width, height);
104}
105
106
107void
108intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
109{
110   functions->CopyTexSubImage = intelCopyTexSubImage;
111}
112