1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
/*
* Copyright 2003 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "main/bufferobj.h"
#include "main/image.h"
#include "main/macros.h"
#include "main/mtypes.h"
#include "main/pbo.h"
#include "main/texobj.h"
#include "main/texstore.h"
#include "main/texcompress.h"
#include "main/enums.h"
#include "drivers/common/meta.h"
#include "brw_context.h"
#include "intel_batchbuffer.h"
#include "intel_tex.h"
#include "intel_mipmap_tree.h"
#include "intel_blit.h"
#include "intel_tiled_memcpy.h"
#define FILE_DEBUG_FLAG DEBUG_TEXTURE
/**
* \brief A fast path for glTexImage and glTexSubImage.
*
* \param for_glTexImage Was this called from glTexImage or glTexSubImage?
*
* This fast path is taken when the texture format is BGRA, RGBA,
* A or L and when the texture memory is X- or Y-tiled. It uploads
* the texture data by mapping the texture memory without a GTT fence, thus
* acquiring a tiled view of the memory, and then copying sucessive
* spans within each tile.
*
* This is a performance win over the conventional texture upload path because
* it avoids the performance penalty of writing through the write-combine
* buffer. In the conventional texture upload path,
* texstore.c:store_texsubimage(), the texture memory is mapped through a GTT
* fence, thus acquiring a linear view of the memory, then each row in the
* image is memcpy'd. In this fast path, we replace each row's copy with
* a sequence of copies over each linear span in tile.
*
* One use case is Google Chrome's paint rectangles. Chrome (as
* of version 21) renders each page as a tiling of 256x256 GL_BGRA textures.
* Each page's content is initially uploaded with glTexImage2D and damaged
* regions are updated with glTexSubImage2D. On some workloads, the
* performance gain of this fastpath on Sandybridge is over 5x.
*/
bool
intel_texsubimage_tiled_memcpy(struct gl_context * ctx,
GLuint dims,
struct gl_texture_image *texImage,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLsizei depth,
GLenum format, GLenum type,
const GLvoid *pixels,
const struct gl_pixelstore_attrib *packing,
bool for_glTexImage)
{
struct brw_context *brw = brw_context(ctx);
struct intel_texture_image *image = intel_texture_image(texImage);
int src_pitch;
/* The miptree's buffer. */
drm_intel_bo *bo;
int error = 0;
uint32_t cpp;
mem_copy_fn mem_copy = NULL;
/* This fastpath is restricted to specific texture types:
* a 2D BGRA, RGBA, L8 or A8 texture. It could be generalized to support
* more types.
*
* FINISHME: The restrictions below on packing alignment and packing row
* length are likely unneeded now because we calculate the source stride
* with _mesa_image_row_stride. However, before removing the restrictions
* we need tests.
*/
if (!brw->has_llc ||
!(type == GL_UNSIGNED_BYTE || type == GL_UNSIGNED_INT_8_8_8_8_REV) ||
!(texImage->TexObject->Target == GL_TEXTURE_2D ||
texImage->TexObject->Target == GL_TEXTURE_RECTANGLE) ||
pixels == NULL ||
_mesa_is_bufferobj(packing->BufferObj) ||
packing->Alignment > 4 ||
packing->SkipPixels > 0 ||
packing->SkipRows > 0 ||
(packing->RowLength != 0 && packing->RowLength != width) ||
packing->SwapBytes ||
packing->LsbFirst ||
packing->Invert)
return false;
/* Only a simple blit, no scale, bias or other mapping. */
if (ctx->_ImageTransferState)
return false;
if (!intel_get_memcpy(texImage->TexFormat, format, type, &mem_copy, &cpp))
return false;
/* If this is a nontrivial texture view, let another path handle it instead. */
if (texImage->TexObject->MinLayer)
return false;
if (for_glTexImage)
ctx->Driver.AllocTextureImageBuffer(ctx, texImage);
if (!image->mt ||
(image->mt->tiling != I915_TILING_X &&
image->mt->tiling != I915_TILING_Y)) {
/* The algorithm is written only for X- or Y-tiled memory. */
return false;
}
/* Since we are going to write raw data to the miptree, we need to resolve
* any pending fast color clears before we start.
*/
intel_miptree_resolve_color(brw, image->mt, 0);
bo = image->mt->bo;
if (drm_intel_bo_references(brw->batch.bo, bo)) {
perf_debug("Flushing before mapping a referenced bo.\n");
intel_batchbuffer_flush(brw);
}
error = brw_bo_map(brw, bo, true /* write enable */, "miptree");
if (error || bo->virtual == NULL) {
DBG("%s: failed to map bo\n", __func__);
return false;
}
src_pitch = _mesa_image_row_stride(packing, width, format, type);
/* We postponed printing this message until having committed to executing
* the function.
*/
DBG("%s: level=%d offset=(%d,%d) (w,h)=(%d,%d) format=0x%x type=0x%x "
"mesa_format=0x%x tiling=%d "
"packing=(alignment=%d row_length=%d skip_pixels=%d skip_rows=%d) "
"for_glTexImage=%d\n",
__func__, texImage->Level, xoffset, yoffset, width, height,
format, type, texImage->TexFormat, image->mt->tiling,
packing->Alignment, packing->RowLength, packing->SkipPixels,
packing->SkipRows, for_glTexImage);
int level = texImage->Level + texImage->TexObject->MinLevel;
/* Adjust x and y offset based on miplevel */
xoffset += image->mt->level[level].level_x;
yoffset += image->mt->level[level].level_y;
linear_to_tiled(
xoffset * cpp, (xoffset + width) * cpp,
yoffset, yoffset + height,
bo->virtual,
pixels - (ptrdiff_t) yoffset * src_pitch - (ptrdiff_t) xoffset * cpp,
image->mt->pitch, src_pitch,
brw->has_swizzling,
image->mt->tiling,
mem_copy
);
drm_intel_bo_unmap(bo);
return true;
}
static void
intelTexSubImage(struct gl_context * ctx,
GLuint dims,
struct gl_texture_image *texImage,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLsizei depth,
GLenum format, GLenum type,
const GLvoid * pixels,
const struct gl_pixelstore_attrib *packing)
{
struct intel_mipmap_tree *mt = intel_texture_image(texImage)->mt;
bool ok;
bool tex_busy = mt && drm_intel_bo_busy(mt->bo);
if (mt && mt->format == MESA_FORMAT_S_UINT8)
mt->r8stencil_needs_update = true;
DBG("%s mesa_format %s target %s format %s type %s level %d %dx%dx%d\n",
__func__, _mesa_get_format_name(texImage->TexFormat),
_mesa_enum_to_string(texImage->TexObject->Target),
_mesa_enum_to_string(format), _mesa_enum_to_string(type),
texImage->Level, texImage->Width, texImage->Height, texImage->Depth);
ok = _mesa_meta_pbo_TexSubImage(ctx, dims, texImage,
xoffset, yoffset, zoffset,
width, height, depth, format, type,
pixels, tex_busy, packing);
if (ok)
return;
ok = intel_texsubimage_tiled_memcpy(ctx, dims, texImage,
xoffset, yoffset, zoffset,
width, height, depth,
format, type, pixels, packing,
false /*for_glTexImage*/);
if (ok)
return;
_mesa_store_texsubimage(ctx, dims, texImage,
xoffset, yoffset, zoffset,
width, height, depth,
format, type, pixels, packing);
}
void
intelInitTextureSubImageFuncs(struct dd_function_table *functions)
{
functions->TexSubImage = intelTexSubImage;
}
|
