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
37 static void
copy_image_with_memcpy(struct brw_context * brw,struct intel_mipmap_tree * src_mt,int src_level,int src_x,int src_y,int src_z,struct intel_mipmap_tree * dst_mt,int dst_level,int dst_x,int dst_y,int dst_z,int src_width,int src_height)38 copy_image_with_memcpy(struct brw_context *brw,
39 struct intel_mipmap_tree *src_mt, int src_level,
40 int src_x, int src_y, int src_z,
41 struct intel_mipmap_tree *dst_mt, int dst_level,
42 int dst_x, int dst_y, int dst_z,
43 int src_width, int src_height)
44 {
45 bool same_slice;
46 void *mapped, *src_mapped, *dst_mapped;
47 ptrdiff_t src_stride, dst_stride, cpp;
48 int map_x1, map_y1, map_x2, map_y2;
49 GLuint src_bw, src_bh;
50
51 cpp = _mesa_get_format_bytes(src_mt->format);
52 _mesa_get_format_block_size(src_mt->format, &src_bw, &src_bh);
53
54 assert(src_width % src_bw == 0);
55 assert(src_height % src_bh == 0);
56 assert(src_x % src_bw == 0);
57 assert(src_y % src_bh == 0);
58
59 /* If we are on the same miptree, same level, and same slice, then
60 * intel_miptree_map won't let us map it twice. We have to do things a
61 * bit differently. In particular, we do a single map large enough for
62 * both portions and in read-write mode.
63 */
64 same_slice = src_mt == dst_mt && src_level == dst_level && src_z == dst_z;
65
66 if (same_slice) {
67 assert(dst_x % src_bw == 0);
68 assert(dst_y % src_bh == 0);
69
70 map_x1 = MIN2(src_x, dst_x);
71 map_y1 = MIN2(src_y, dst_y);
72 map_x2 = MAX2(src_x, dst_x) + src_width;
73 map_y2 = MAX2(src_y, dst_y) + src_height;
74
75 intel_miptree_map(brw, src_mt, src_level, src_z,
76 map_x1, map_y1, map_x2 - map_x1, map_y2 - map_y1,
77 GL_MAP_READ_BIT | GL_MAP_WRITE_BIT,
78 &mapped, &src_stride);
79
80 dst_stride = src_stride;
81
82 /* Set the offsets here so we don't have to think about while looping */
83 src_mapped = mapped + ((src_y - map_y1) / src_bh) * src_stride +
84 ((src_x - map_x1) / src_bw) * cpp;
85 dst_mapped = mapped + ((dst_y - map_y1) / src_bh) * dst_stride +
86 ((dst_x - map_x1) / src_bw) * cpp;
87 } else {
88 intel_miptree_map(brw, src_mt, src_level, src_z,
89 src_x, src_y, src_width, src_height,
90 GL_MAP_READ_BIT, &src_mapped, &src_stride);
91 intel_miptree_map(brw, dst_mt, dst_level, dst_z,
92 dst_x, dst_y, src_width, src_height,
93 GL_MAP_WRITE_BIT, &dst_mapped, &dst_stride);
94 }
95
96 src_width /= (int)src_bw;
97 src_height /= (int)src_bh;
98
99 for (int i = 0; i < src_height; ++i) {
100 memcpy(dst_mapped, src_mapped, src_width * cpp);
101 src_mapped += src_stride;
102 dst_mapped += dst_stride;
103 }
104
105 if (same_slice) {
106 intel_miptree_unmap(brw, src_mt, src_level, src_z);
107 } else {
108 intel_miptree_unmap(brw, dst_mt, dst_level, dst_z);
109 intel_miptree_unmap(brw, src_mt, src_level, src_z);
110 }
111 }
112
113 static void
copy_miptrees(struct brw_context * brw,struct intel_mipmap_tree * src_mt,int src_x,int src_y,int src_z,unsigned src_level,struct intel_mipmap_tree * dst_mt,int dst_x,int dst_y,int dst_z,unsigned dst_level,int src_width,int src_height)114 copy_miptrees(struct brw_context *brw,
115 struct intel_mipmap_tree *src_mt,
116 int src_x, int src_y, int src_z, unsigned src_level,
117 struct intel_mipmap_tree *dst_mt,
118 int dst_x, int dst_y, int dst_z, unsigned dst_level,
119 int src_width, int src_height)
120 {
121 unsigned bw, bh;
122
123 if (brw->gen >= 6) {
124 brw_blorp_copy_miptrees(brw,
125 src_mt, src_level, src_z,
126 dst_mt, dst_level, dst_z,
127 src_x, src_y, dst_x, dst_y,
128 src_width, src_height);
129 return;
130 }
131
132 /* We are now going to try and copy the texture using the blitter. If
133 * that fails, we will fall back mapping the texture and using memcpy.
134 * In either case, we need to do a full resolve.
135 */
136 intel_miptree_all_slices_resolve_hiz(brw, src_mt);
137 intel_miptree_all_slices_resolve_depth(brw, src_mt);
138 intel_miptree_all_slices_resolve_color(brw, src_mt, 0);
139
140 intel_miptree_all_slices_resolve_hiz(brw, dst_mt);
141 intel_miptree_all_slices_resolve_depth(brw, dst_mt);
142 intel_miptree_all_slices_resolve_color(brw, dst_mt, 0);
143
144 _mesa_get_format_block_size(src_mt->format, &bw, &bh);
145
146 /* It's legal to have a WxH that's smaller than a compressed block. This
147 * happens for example when you are using a higher level LOD. For this case,
148 * we still want to copy the entire block, or else the decompression will be
149 * incorrect.
150 */
151 if (src_width < bw)
152 src_width = ALIGN_NPOT(src_width, bw);
153
154 if (src_height < bh)
155 src_height = ALIGN_NPOT(src_height, bh);
156
157 if (intel_miptree_copy(brw, src_mt, src_level, src_z, src_x, src_y,
158 dst_mt, dst_level, dst_z, dst_x, dst_y,
159 src_width, src_height))
160 return;
161
162 /* This is a worst-case scenario software fallback that maps the two
163 * textures and does a memcpy between them.
164 */
165 copy_image_with_memcpy(brw, src_mt, src_level,
166 src_x, src_y, src_z,
167 dst_mt, dst_level,
168 dst_x, dst_y, dst_z,
169 src_width, src_height);
170 }
171
172 static void
intel_copy_image_sub_data(struct gl_context * ctx,struct gl_texture_image * src_image,struct gl_renderbuffer * src_renderbuffer,int src_x,int src_y,int src_z,struct gl_texture_image * dst_image,struct gl_renderbuffer * dst_renderbuffer,int dst_x,int dst_y,int dst_z,int src_width,int src_height)173 intel_copy_image_sub_data(struct gl_context *ctx,
174 struct gl_texture_image *src_image,
175 struct gl_renderbuffer *src_renderbuffer,
176 int src_x, int src_y, int src_z,
177 struct gl_texture_image *dst_image,
178 struct gl_renderbuffer *dst_renderbuffer,
179 int dst_x, int dst_y, int dst_z,
180 int src_width, int src_height)
181 {
182 struct brw_context *brw = brw_context(ctx);
183 struct intel_mipmap_tree *src_mt, *dst_mt;
184 unsigned src_level, dst_level;
185
186 if (src_image) {
187 src_mt = intel_texture_image(src_image)->mt;
188 src_level = src_image->Level + src_image->TexObject->MinLevel;
189
190 /* Cube maps actually have different images per face */
191 if (src_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
192 src_z = src_image->Face;
193
194 src_z += src_image->TexObject->MinLayer;
195 } else {
196 assert(src_renderbuffer);
197 src_mt = intel_renderbuffer(src_renderbuffer)->mt;
198 src_image = src_renderbuffer->TexImage;
199 src_level = 0;
200 }
201
202 if (dst_image) {
203 dst_mt = intel_texture_image(dst_image)->mt;
204
205 dst_level = dst_image->Level + dst_image->TexObject->MinLevel;
206
207 /* Cube maps actually have different images per face */
208 if (dst_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
209 dst_z = dst_image->Face;
210
211 dst_z += dst_image->TexObject->MinLayer;
212 } else {
213 assert(dst_renderbuffer);
214 dst_mt = intel_renderbuffer(dst_renderbuffer)->mt;
215 dst_image = dst_renderbuffer->TexImage;
216 dst_level = 0;
217 }
218
219 copy_miptrees(brw, src_mt, src_x, src_y, src_z, src_level,
220 dst_mt, dst_x, dst_y, dst_z, dst_level,
221 src_width, src_height);
222
223 /* CopyImage only works for equal formats, texture view equivalence
224 * classes, and a couple special cases for compressed textures.
225 *
226 * Notably, GL_DEPTH_STENCIL does not appear in any equivalence
227 * classes, so we know the formats must be the same, and thus both
228 * will either have stencil, or not. They can't be mismatched.
229 */
230 assert((src_mt->stencil_mt != NULL) == (dst_mt->stencil_mt != NULL));
231
232 if (dst_mt->stencil_mt) {
233 copy_miptrees(brw, src_mt->stencil_mt, src_x, src_y, src_z, src_level,
234 dst_mt->stencil_mt, dst_x, dst_y, dst_z, dst_level,
235 src_width, src_height);
236 }
237 }
238
239 void
intelInitCopyImageFuncs(struct dd_function_table * functions)240 intelInitCopyImageFuncs(struct dd_function_table *functions)
241 {
242 functions->CopyImageSubData = intel_copy_image_sub_data;
243 }
244