1
2/**************************************************************************
3 *
4 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
17 * of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 **************************************************************************/
28
29#include "main/mtypes.h"
30#include "main/pbo.h"
31#include "main/texobj.h"
32#include "main/texstore.h"
33#include "main/texcompress.h"
34#include "main/enums.h"
35
36#include "intel_context.h"
37#include "intel_tex.h"
38#include "intel_mipmap_tree.h"
39#include "intel_blit.h"
40
41#define FILE_DEBUG_FLAG DEBUG_TEXTURE
42
43static bool
44intel_blit_texsubimage(struct gl_context * ctx,
45		       struct gl_texture_image *texImage,
46		       GLint xoffset, GLint yoffset,
47		       GLint width, GLint height,
48		       GLenum format, GLenum type, const void *pixels,
49		       const struct gl_pixelstore_attrib *packing)
50{
51   struct intel_context *intel = intel_context(ctx);
52   struct intel_texture_image *intelImage = intel_texture_image(texImage);
53   GLuint dstRowStride = 0;
54   drm_intel_bo *temp_bo = NULL;
55   unsigned int blit_x = 0, blit_y = 0;
56   unsigned long pitch;
57   uint32_t tiling_mode = I915_TILING_NONE;
58   GLubyte *dstMap;
59
60   /* Try to do a blit upload of the subimage if the texture is
61    * currently busy.
62    */
63   if (!intelImage->mt)
64      return false;
65
66   /* The blitter can't handle Y tiling */
67   if (intelImage->mt->region->tiling == I915_TILING_Y)
68      return false;
69
70   if (texImage->TexObject->Target != GL_TEXTURE_2D)
71      return false;
72
73   /* On gen6, it's probably not worth swapping to the blit ring to do
74    * this because of all the overhead involved.
75    */
76   if (intel->gen >= 6)
77      return false;
78
79   if (!drm_intel_bo_busy(intelImage->mt->region->bo))
80      return false;
81
82   DBG("BLT subimage %s target %s level %d offset %d,%d %dx%d\n",
83       __FUNCTION__,
84       _mesa_lookup_enum_by_nr(texImage->TexObject->Target),
85       texImage->Level, xoffset, yoffset, width, height);
86
87   pixels = _mesa_validate_pbo_teximage(ctx, 2, width, height, 1,
88					format, type, pixels, packing,
89					"glTexSubImage");
90   if (!pixels)
91      return false;
92
93   temp_bo = drm_intel_bo_alloc_tiled(intel->bufmgr,
94				      "subimage blit bo",
95				      width, height,
96				      intelImage->mt->cpp,
97				      &tiling_mode,
98				      &pitch,
99				      0);
100   if (temp_bo == NULL) {
101      _mesa_error(ctx, GL_OUT_OF_MEMORY, "intelTexSubImage");
102      return false;
103   }
104
105   if (drm_intel_gem_bo_map_gtt(temp_bo)) {
106      _mesa_error(ctx, GL_OUT_OF_MEMORY, "intelTexSubImage");
107      return false;
108   }
109
110   dstMap = temp_bo->virtual;
111   dstRowStride = pitch;
112
113   intel_miptree_get_image_offset(intelImage->mt, texImage->Level,
114				  intelImage->base.Base.Face, 0,
115				  &blit_x, &blit_y);
116   blit_x += xoffset;
117   blit_y += yoffset;
118
119   if (!_mesa_texstore(ctx, 2, texImage->_BaseFormat,
120		       texImage->TexFormat,
121		       dstRowStride,
122		       &dstMap,
123		       width, height, 1,
124		       format, type, pixels, packing)) {
125      _mesa_error(ctx, GL_OUT_OF_MEMORY, "intelTexSubImage");
126   }
127
128   bool ret;
129   unsigned int dst_pitch = intelImage->mt->region->pitch *
130      intelImage->mt->cpp;
131
132   drm_intel_gem_bo_unmap_gtt(temp_bo);
133
134   ret = intelEmitCopyBlit(intel,
135			   intelImage->mt->cpp,
136			   dstRowStride / intelImage->mt->cpp,
137			   temp_bo, 0, false,
138			   dst_pitch / intelImage->mt->cpp,
139			   intelImage->mt->region->bo, 0,
140			   intelImage->mt->region->tiling,
141			   0, 0, blit_x, blit_y, width, height,
142			   GL_COPY);
143   assert(ret);
144
145   drm_intel_bo_unreference(temp_bo);
146   _mesa_unmap_teximage_pbo(ctx, packing);
147
148   return true;
149}
150
151static void
152intelTexSubImage(struct gl_context * ctx,
153                 GLuint dims,
154                 struct gl_texture_image *texImage,
155                 GLint xoffset, GLint yoffset, GLint zoffset,
156                 GLsizei width, GLsizei height, GLsizei depth,
157                 GLenum format, GLenum type,
158                 const GLvoid * pixels,
159                 const struct gl_pixelstore_attrib *packing)
160{
161   /* The intel_blit_texsubimage() function only handles 2D images */
162   if (dims != 2 || !intel_blit_texsubimage(ctx, texImage,
163			       xoffset, yoffset,
164			       width, height,
165			       format, type, pixels, packing)) {
166      _mesa_store_texsubimage(ctx, dims, texImage,
167                              xoffset, yoffset, zoffset,
168                              width, height, depth,
169                              format, type, pixels, packing);
170   }
171}
172
173void
174intelInitTextureSubImageFuncs(struct dd_function_table *functions)
175{
176   functions->TexSubImage = intelTexSubImage;
177}
178