1/*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 2014 Intel Corporation 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 * Authors:
25 *    Jason Ekstrand <jason.ekstrand@intel.com>
26 */
27
28#include "brw_blorp.h"
29#include "intel_fbo.h"
30#include "intel_tex.h"
31#include "intel_blit.h"
32#include "intel_mipmap_tree.h"
33#include "main/formats.h"
34#include "main/teximage.h"
35#include "drivers/common/meta.h"
36
37static void
38copy_miptrees(struct brw_context *brw,
39              struct intel_mipmap_tree *src_mt,
40              int src_x, int src_y, int src_z, unsigned src_level,
41              struct intel_mipmap_tree *dst_mt,
42              int dst_x, int dst_y, int dst_z, unsigned dst_level,
43              int src_width, int src_height)
44{
45   const struct gen_device_info *devinfo = &brw->screen->devinfo;
46
47   if (devinfo->gen <= 5) {
48      /* On gen4-5, try BLT first.
49       *
50       * Gen4-5 have a single ring for both 3D and BLT operations, so there's
51       * no inter-ring synchronization issues like on Gen6+.  It is apparently
52       * faster than using the 3D pipeline.  Original Gen4 also has to rebase
53       * and copy miptree slices in order to render to unaligned locations.
54       */
55      if (intel_miptree_copy(brw, src_mt, src_level, src_z, src_x, src_y,
56                             dst_mt, dst_level, dst_z, dst_x, dst_y,
57                             src_width, src_height))
58         return;
59   }
60
61   brw_blorp_copy_miptrees(brw,
62                           src_mt, src_level, src_z,
63                           dst_mt, dst_level, dst_z,
64                           src_x, src_y, dst_x, dst_y,
65                           src_width, src_height);
66}
67
68static void
69intel_copy_image_sub_data(struct gl_context *ctx,
70                          struct gl_texture_image *src_image,
71                          struct gl_renderbuffer *src_renderbuffer,
72                          int src_x, int src_y, int src_z,
73                          struct gl_texture_image *dst_image,
74                          struct gl_renderbuffer *dst_renderbuffer,
75                          int dst_x, int dst_y, int dst_z,
76                          int src_width, int src_height)
77{
78   struct brw_context *brw = brw_context(ctx);
79   struct intel_mipmap_tree *src_mt, *dst_mt;
80   unsigned src_level, dst_level;
81
82   if (src_image) {
83      src_mt = intel_texture_image(src_image)->mt;
84      src_level = src_image->Level + src_image->TexObject->MinLevel;
85
86      /* Cube maps actually have different images per face */
87      if (src_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
88         src_z = src_image->Face;
89
90      src_z += src_image->TexObject->MinLayer;
91   } else {
92      assert(src_renderbuffer);
93      src_mt = intel_renderbuffer(src_renderbuffer)->mt;
94      src_image = src_renderbuffer->TexImage;
95      src_level = 0;
96   }
97
98   if (dst_image) {
99      dst_mt = intel_texture_image(dst_image)->mt;
100
101      dst_level = dst_image->Level + dst_image->TexObject->MinLevel;
102
103      /* Cube maps actually have different images per face */
104      if (dst_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
105         dst_z = dst_image->Face;
106
107      dst_z += dst_image->TexObject->MinLayer;
108   } else {
109      assert(dst_renderbuffer);
110      dst_mt = intel_renderbuffer(dst_renderbuffer)->mt;
111      dst_image = dst_renderbuffer->TexImage;
112      dst_level = 0;
113   }
114
115   copy_miptrees(brw, src_mt, src_x, src_y, src_z, src_level,
116                 dst_mt, dst_x, dst_y, dst_z, dst_level,
117                 src_width, src_height);
118
119   /* CopyImage only works for equal formats, texture view equivalence
120    * classes, and a couple special cases for compressed textures.
121    *
122    * Notably, GL_DEPTH_STENCIL does not appear in any equivalence
123    * classes, so we know the formats must be the same, and thus both
124    * will either have stencil, or not.  They can't be mismatched.
125    */
126   assert((src_mt->stencil_mt != NULL) == (dst_mt->stencil_mt != NULL));
127
128   if (dst_mt->stencil_mt) {
129      copy_miptrees(brw, src_mt->stencil_mt, src_x, src_y, src_z, src_level,
130                    dst_mt->stencil_mt, dst_x, dst_y, dst_z, dst_level,
131                    src_width, src_height);
132   }
133}
134
135void
136intelInitCopyImageFuncs(struct dd_function_table *functions)
137{
138   functions->CopyImageSubData = intel_copy_image_sub_data;
139}
140