1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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 TUNGSTEN GRAPHICS 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.
26 **************************************************************************/
28 #include "st_context.h"
29 #include "st_format.h"
30 #include "st_texture.h"
33 #undef Elements /* fix re-defined macro warning */
35 #include "pipe/p_state.h"
36 #include "pipe/p_context.h"
37 #include "pipe/p_defines.h"
38 #include "pipe/p_inlines.h"
39 #include "pipe/p_util.h"
40 #include "pipe/p_inlines.h"
43 #define DBG if(0) printf
47 target_to_target(GLenum target
)
50 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
:
51 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB
:
52 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB
:
53 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB
:
54 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB
:
55 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
:
56 return GL_TEXTURE_CUBE_MAP_ARB
;
65 * Allocate a new pipe_texture object
66 * width0, height0, depth0 are the dimensions of the level 0 image
67 * (the highest resolution). last_level indicates how many mipmap levels
68 * to allocate storage for. For non-mipmapped textures, this will be zero.
71 st_texture_create(struct st_context
*st
,
72 enum pipe_texture_target target
,
73 enum pipe_format format
,
81 struct pipe_texture pt
, *newtex
;
82 struct pipe_screen
*screen
= st
->pipe
->screen
;
84 assert(target
<= PIPE_TEXTURE_CUBE
);
86 DBG("%s target %s format %s last_level %d\n", __FUNCTION__
,
87 _mesa_lookup_enum_by_nr(target
),
88 _mesa_lookup_enum_by_nr(format
), last_level
);
91 assert(screen
->is_format_supported(screen
, format
, target
,
92 PIPE_TEXTURE_USAGE_SAMPLER
, 0));
94 memset(&pt
, 0, sizeof(pt
));
97 pt
.last_level
= last_level
;
99 pt
.height
[0] = height0
;
100 pt
.depth
[0] = depth0
;
101 pt
.compressed
= compress_byte
? 1 : 0;
102 pf_get_block(format
, &pt
.block
);
103 pt
.tex_usage
= usage
;
105 newtex
= screen
->texture_create(screen
, &pt
);
107 assert(!newtex
|| newtex
->refcount
== 1);
114 * Check if a texture image be pulled into a unified mipmap texture.
115 * This mirrors the completeness test in a lot of ways.
117 * Not sure whether I want to pass gl_texture_image here.
120 st_texture_match_image(const struct pipe_texture
*pt
,
121 const struct gl_texture_image
*image
,
122 GLuint face
, GLuint level
)
124 /* Images with borders are never pulled into mipmap textures.
129 if (st_mesa_format_to_pipe_format(image
->TexFormat
->MesaFormat
) != pt
->format
||
130 image
->IsCompressed
!= pt
->compressed
)
133 /* Test image dimensions against the base level image adjusted for
134 * minification. This will also catch images not present in the
135 * texture, changed targets, etc.
137 if (image
->Width
!= pt
->width
[level
] ||
138 image
->Height
!= pt
->height
[level
] ||
139 image
->Depth
!= pt
->depth
[level
])
147 /* Although we use the image_offset[] array to store relative offsets
148 * to cube faces, Mesa doesn't know anything about this and expects
149 * each cube face to be treated as a separate image.
151 * These functions present that view to mesa:
154 st_texture_depth_offsets(struct pipe_texture
*pt
, GLuint level
)
156 static const GLuint zero
= 0;
158 if (pt
->target
!= PIPE_TEXTURE_3D
|| pt
->level
[level
].nr_images
== 1)
161 return pt
->level
[level
].image_offset
;
166 * Return the offset to the given mipmap texture image within the
167 * texture memory buffer, in bytes.
170 st_texture_image_offset(const struct pipe_texture
* pt
,
171 GLuint face
, GLuint level
)
173 if (pt
->target
== PIPE_TEXTURE_CUBE
)
174 return (pt
->level
[level
].level_offset
+
175 pt
->level
[level
].image_offset
[face
] * pt
->cpp
);
177 return pt
->level
[level
].level_offset
;
183 * Map a teximage in a mipmap texture.
184 * \param row_stride returns row stride in bytes
185 * \param image_stride returns image stride in bytes (for 3D textures).
186 * \return address of mapping
189 st_texture_image_map(struct st_context
*st
, struct st_texture_image
*stImage
,
193 struct pipe_screen
*screen
= st
->pipe
->screen
;
194 struct pipe_texture
*pt
= stImage
->pt
;
195 DBG("%s \n", __FUNCTION__
);
197 stImage
->surface
= screen
->get_tex_surface(screen
, pt
, stImage
->face
,
198 stImage
->level
, zoffset
,
201 if (stImage
->surface
)
202 return screen
->surface_map(screen
, stImage
->surface
, flags
);
209 st_texture_image_unmap(struct st_context
*st
,
210 struct st_texture_image
*stImage
)
212 struct pipe_screen
*screen
= st
->pipe
->screen
;
214 DBG("%s\n", __FUNCTION__
);
216 screen
->surface_unmap(screen
, stImage
->surface
);
218 pipe_surface_reference(&stImage
->surface
, NULL
);
224 * Upload data to a rectangular sub-region. Lots of choices how to do this:
226 * - memcpy by span to current destination
227 * - upload data as new buffer and blit
229 * Currently always memcpy.
232 st_surface_data(struct pipe_context
*pipe
,
233 struct pipe_surface
*dst
,
234 unsigned dstx
, unsigned dsty
,
235 const void *src
, unsigned src_stride
,
236 unsigned srcx
, unsigned srcy
, unsigned width
, unsigned height
)
238 struct pipe_screen
*screen
= pipe
->screen
;
239 void *map
= screen
->surface_map(screen
, dst
, PIPE_BUFFER_USAGE_CPU_WRITE
);
249 screen
->surface_unmap(screen
, dst
);
253 /* Upload data for a particular image.
256 st_texture_image_data(struct pipe_context
*pipe
,
257 struct pipe_texture
*dst
,
261 GLuint src_row_stride
, GLuint src_image_stride
)
263 struct pipe_screen
*screen
= pipe
->screen
;
264 GLuint depth
= dst
->depth
[level
];
266 const GLubyte
*srcUB
= src
;
267 struct pipe_surface
*dst_surface
;
269 DBG("%s\n", __FUNCTION__
);
270 for (i
= 0; i
< depth
; i
++) {
271 dst_surface
= screen
->get_tex_surface(screen
, dst
, face
, level
, i
,
272 PIPE_BUFFER_USAGE_CPU_WRITE
);
274 st_surface_data(pipe
, dst_surface
,
275 0, 0, /* dstx, dsty */
278 0, 0, /* source x, y */
279 dst
->width
[level
], dst
->height
[level
]); /* width, height */
281 screen
->tex_surface_release(screen
, &dst_surface
);
283 srcUB
+= src_image_stride
;
288 /* Copy mipmap image between textures
291 st_texture_image_copy(struct pipe_context
*pipe
,
292 struct pipe_texture
*dst
, GLuint dstLevel
,
293 struct pipe_texture
*src
,
296 struct pipe_screen
*screen
= pipe
->screen
;
297 GLuint width
= dst
->width
[dstLevel
];
298 GLuint height
= dst
->height
[dstLevel
];
299 GLuint depth
= dst
->depth
[dstLevel
];
300 struct pipe_surface
*src_surface
;
301 struct pipe_surface
*dst_surface
;
304 /* XXX this is a hack */
305 const GLuint copyHeight
= dst
->compressed
? height
/ 4 : height
;
307 for (i
= 0; i
< depth
; i
++) {
310 /* find src texture level of needed size */
311 for (srcLevel
= 0; srcLevel
<= src
->last_level
; srcLevel
++) {
312 if (src
->width
[srcLevel
] == width
&&
313 src
->height
[srcLevel
] == height
) {
317 assert(src
->width
[srcLevel
] == width
);
318 assert(src
->height
[srcLevel
] == height
);
322 src_surface
= screen
->get_tex_surface(screen
, src
, face
, srcLevel
, i
,
323 PIPE_BUFFER_USAGE_CPU_READ
);
324 ubyte
*map
= screen
->surface_map(screen
, src_surface
, PIPE_BUFFER_USAGE_CPU_READ
);
325 map
+= src_surface
->width
* src_surface
->height
* 4 / 2;
326 printf("%s center pixel: %d %d %d %d (pt %p[%d] -> %p[%d])\n",
328 map
[0], map
[1], map
[2], map
[3],
329 src
, srcLevel
, dst
, dstLevel
);
331 screen
->surface_unmap(screen
, src_surface
);
332 pipe_surface_reference(&src_surface
, NULL
);
336 dst_surface
= screen
->get_tex_surface(screen
, dst
, face
, dstLevel
, i
,
337 PIPE_BUFFER_USAGE_GPU_WRITE
);
339 src_surface
= screen
->get_tex_surface(screen
, src
, face
, srcLevel
, i
,
340 PIPE_BUFFER_USAGE_GPU_READ
);
342 pipe
->surface_copy(pipe
,
350 screen
->tex_surface_release(screen
, &src_surface
);
351 screen
->tex_surface_release(screen
, &dst_surface
);