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_public.h"
31 #include "st_texture.h"
32 #include "st_cb_fbo.h"
33 #include "st_inlines.h"
34 #include "main/enums.h"
35 #include "main/texobj.h"
36 #include "main/teximage.h"
37 #include "main/texstore.h"
39 #undef Elements /* fix re-defined macro warning */
41 #include "pipe/p_state.h"
42 #include "pipe/p_context.h"
43 #include "pipe/p_defines.h"
44 #include "pipe/p_inlines.h"
45 #include "util/u_rect.h"
48 #define DBG if(0) printf
52 target_to_target(GLenum target
)
55 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
:
56 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB
:
57 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB
:
58 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB
:
59 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB
:
60 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
:
61 return GL_TEXTURE_CUBE_MAP_ARB
;
70 * Allocate a new pipe_texture object
71 * width0, height0, depth0 are the dimensions of the level 0 image
72 * (the highest resolution). last_level indicates how many mipmap levels
73 * to allocate storage for. For non-mipmapped textures, this will be zero.
76 st_texture_create(struct st_context
*st
,
77 enum pipe_texture_target target
,
78 enum pipe_format format
,
85 struct pipe_texture pt
, *newtex
;
86 struct pipe_screen
*screen
= st
->pipe
->screen
;
88 assert(target
<= PIPE_TEXTURE_CUBE
);
90 DBG("%s target %s format %s last_level %d\n", __FUNCTION__
,
91 _mesa_lookup_enum_by_nr(target
),
92 _mesa_lookup_enum_by_nr(format
), last_level
);
95 assert(screen
->is_format_supported(screen
, format
, target
,
96 PIPE_TEXTURE_USAGE_SAMPLER
, 0));
98 memset(&pt
, 0, sizeof(pt
));
101 pt
.last_level
= last_level
;
102 pt
.width
[0] = width0
;
103 pt
.height
[0] = height0
;
104 pt
.depth
[0] = depth0
;
105 pf_get_block(format
, &pt
.block
);
106 pt
.tex_usage
= usage
;
108 newtex
= screen
->texture_create(screen
, &pt
);
110 assert(!newtex
|| pipe_is_referenced(&newtex
->reference
));
117 * Check if a texture image can be pulled into a unified mipmap texture.
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 /* Check if this image's format matches the established texture's format.
131 if (st_mesa_format_to_pipe_format(image
->TexFormat
->MesaFormat
) != pt
->format
)
134 /* Test if this image's size matches what's expected in the
135 * established texture.
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
,
190 GLuint zoffset
, enum pipe_transfer_usage usage
,
191 GLuint x
, GLuint y
, GLuint w
, GLuint h
)
193 struct pipe_context
*pipe
= st
->pipe
;
194 struct pipe_screen
*screen
= pipe
->screen
;
195 struct pipe_texture
*pt
= stImage
->pt
;
197 DBG("%s \n", __FUNCTION__
);
199 stImage
->transfer
= st_no_flush_get_tex_transfer(st
, pt
, stImage
->face
,
200 stImage
->level
, zoffset
,
203 if (stImage
->transfer
)
204 return screen
->transfer_map(screen
, stImage
->transfer
);
211 st_texture_image_unmap(struct st_context
*st
,
212 struct st_texture_image
*stImage
)
214 struct pipe_screen
*screen
= st
->pipe
->screen
;
216 DBG("%s\n", __FUNCTION__
);
218 screen
->transfer_unmap(screen
, stImage
->transfer
);
220 screen
->tex_transfer_destroy(stImage
->transfer
);
226 * Upload data to a rectangular sub-region. Lots of choices how to do this:
228 * - memcpy by span to current destination
229 * - upload data as new buffer and blit
231 * Currently always memcpy.
234 st_surface_data(struct pipe_context
*pipe
,
235 struct pipe_transfer
*dst
,
236 unsigned dstx
, unsigned dsty
,
237 const void *src
, unsigned src_stride
,
238 unsigned srcx
, unsigned srcy
, unsigned width
, unsigned height
)
240 struct pipe_screen
*screen
= pipe
->screen
;
241 void *map
= screen
->transfer_map(screen
, dst
);
251 screen
->transfer_unmap(screen
, dst
);
255 /* Upload data for a particular image.
258 st_texture_image_data(struct st_context
*st
,
259 struct pipe_texture
*dst
,
263 GLuint src_row_stride
, GLuint src_image_stride
)
265 struct pipe_context
*pipe
= st
->pipe
;
266 struct pipe_screen
*screen
= pipe
->screen
;
267 GLuint depth
= dst
->depth
[level
];
269 const GLubyte
*srcUB
= src
;
270 struct pipe_transfer
*dst_transfer
;
272 DBG("%s\n", __FUNCTION__
);
274 for (i
= 0; i
< depth
; i
++) {
275 dst_transfer
= st_no_flush_get_tex_transfer(st
, dst
, face
, level
, i
,
276 PIPE_TRANSFER_WRITE
, 0, 0,
280 st_surface_data(pipe
, dst_transfer
,
281 0, 0, /* dstx, dsty */
284 0, 0, /* source x, y */
285 dst
->width
[level
], dst
->height
[level
]); /* width, height */
287 screen
->tex_transfer_destroy(dst_transfer
);
289 srcUB
+= src_image_stride
;
294 /* Copy mipmap image between textures
297 st_texture_image_copy(struct pipe_context
*pipe
,
298 struct pipe_texture
*dst
, GLuint dstLevel
,
299 struct pipe_texture
*src
,
302 struct pipe_screen
*screen
= pipe
->screen
;
303 GLuint width
= dst
->width
[dstLevel
];
304 GLuint height
= dst
->height
[dstLevel
];
305 GLuint depth
= dst
->depth
[dstLevel
];
306 struct pipe_surface
*src_surface
;
307 struct pipe_surface
*dst_surface
;
310 for (i
= 0; i
< depth
; i
++) {
313 /* find src texture level of needed size */
314 for (srcLevel
= 0; srcLevel
<= src
->last_level
; srcLevel
++) {
315 if (src
->width
[srcLevel
] == width
&&
316 src
->height
[srcLevel
] == height
) {
320 assert(src
->width
[srcLevel
] == width
);
321 assert(src
->height
[srcLevel
] == height
);
325 src_surface
= screen
->get_tex_surface(screen
, src
, face
, srcLevel
, i
,
326 PIPE_BUFFER_USAGE_CPU_READ
);
327 ubyte
*map
= screen
->surface_map(screen
, src_surface
, PIPE_BUFFER_USAGE_CPU_READ
);
328 map
+= src_surface
->width
* src_surface
->height
* 4 / 2;
329 printf("%s center pixel: %d %d %d %d (pt %p[%d] -> %p[%d])\n",
331 map
[0], map
[1], map
[2], map
[3],
332 src
, srcLevel
, dst
, dstLevel
);
334 screen
->surface_unmap(screen
, src_surface
);
335 pipe_surface_reference(&src_surface
, NULL
);
339 dst_surface
= screen
->get_tex_surface(screen
, dst
, face
, dstLevel
, i
,
340 PIPE_BUFFER_USAGE_GPU_WRITE
);
342 src_surface
= screen
->get_tex_surface(screen
, src
, face
, srcLevel
, i
,
343 PIPE_BUFFER_USAGE_GPU_READ
);
345 pipe
->surface_copy(pipe
,
352 pipe_surface_reference(&src_surface
, NULL
);
353 pipe_surface_reference(&dst_surface
, NULL
);
359 * Bind a pipe surface to a texture object. After the call,
360 * the texture object is marked dirty and will be (re-)validated.
362 * If this is the first surface bound, the texture object is said to
363 * switch from normal to surface based. It will be cleared first in
366 * \param ps pipe surface to be unbound
367 * \param target texture target
368 * \param level image level
369 * \param format internal format of the texture
372 st_bind_texture_surface(struct pipe_surface
*ps
, int target
, int level
,
373 enum pipe_format format
)
375 GET_CURRENT_CONTEXT(ctx
);
376 const GLuint unit
= ctx
->Texture
.CurrentUnit
;
377 struct gl_texture_unit
*texUnit
= &ctx
->Texture
.Unit
[unit
];
378 struct gl_texture_object
*texObj
;
379 struct gl_texture_image
*texImage
;
380 struct st_texture_object
*stObj
;
381 struct st_texture_image
*stImage
;
382 GLenum internalFormat
;
386 target
= GL_TEXTURE_2D
;
388 case ST_TEXTURE_RECT
:
389 target
= GL_TEXTURE_RECTANGLE_ARB
;
395 /* map pipe format to base format for now */
396 if (pf_get_component_bits(format
, PIPE_FORMAT_COMP_A
) > 0)
397 internalFormat
= GL_RGBA
;
399 internalFormat
= GL_RGB
;
401 texObj
= _mesa_select_tex_object(ctx
, texUnit
, target
);
402 _mesa_lock_texture(ctx
, texObj
);
404 stObj
= st_texture_object(texObj
);
405 /* switch to surface based */
406 if (!stObj
->surface_based
) {
407 _mesa_clear_texture_object(ctx
, texObj
);
408 stObj
->surface_based
= GL_TRUE
;
411 texImage
= _mesa_get_tex_image(ctx
, texObj
, target
, level
);
412 stImage
= st_texture_image(texImage
);
414 _mesa_init_teximage_fields(ctx
, target
, texImage
,
415 ps
->width
, ps
->height
, 1, 0, internalFormat
);
416 texImage
->TexFormat
= st_ChooseTextureFormat(ctx
, internalFormat
,
417 GL_RGBA
, GL_UNSIGNED_BYTE
);
418 _mesa_set_fetch_functions(texImage
, 2);
419 pipe_texture_reference(&stImage
->pt
, ps
->texture
);
421 _mesa_dirty_texobj(ctx
, texObj
, GL_TRUE
);
422 _mesa_unlock_texture(ctx
, texObj
);
429 * Unbind a pipe surface from a texture object. After the call,
430 * the texture object is marked dirty and will be (re-)validated.
432 * \param ps pipe surface to be unbound
433 * \param target texture target
434 * \param level image level
437 st_unbind_texture_surface(struct pipe_surface
*ps
, int target
, int level
)
439 GET_CURRENT_CONTEXT(ctx
);
440 const GLuint unit
= ctx
->Texture
.CurrentUnit
;
441 struct gl_texture_unit
*texUnit
= &ctx
->Texture
.Unit
[unit
];
442 struct gl_texture_object
*texObj
;
443 struct gl_texture_image
*texImage
;
444 struct st_texture_object
*stObj
;
445 struct st_texture_image
*stImage
;
449 target
= GL_TEXTURE_2D
;
451 case ST_TEXTURE_RECT
:
452 target
= GL_TEXTURE_RECTANGLE_ARB
;
458 texObj
= _mesa_select_tex_object(ctx
, texUnit
, target
);
460 _mesa_lock_texture(ctx
, texObj
);
462 texImage
= _mesa_get_tex_image(ctx
, texObj
, target
, level
);
463 stObj
= st_texture_object(texObj
);
464 stImage
= st_texture_image(texImage
);
466 /* Make sure the pipe surface is still bound. The texture object is still
467 * considered surface based even if this is the last bound surface. */
468 if (stImage
->pt
== ps
->texture
) {
469 pipe_texture_reference(&stImage
->pt
, NULL
);
470 _mesa_clear_texture_image(ctx
, texImage
);
472 _mesa_dirty_texobj(ctx
, texObj
, GL_TRUE
);
475 _mesa_unlock_texture(ctx
, texObj
);
481 /** Redirect rendering into stfb's surface to a texture image */
483 st_bind_teximage(struct st_framebuffer
*stfb
, uint surfIndex
,
484 int target
, int format
, int level
)
486 GET_CURRENT_CONTEXT(ctx
);
487 struct st_context
*st
= ctx
->st
;
488 struct pipe_context
*pipe
= st
->pipe
;
489 struct pipe_screen
*screen
= pipe
->screen
;
490 const GLuint unit
= ctx
->Texture
.CurrentUnit
;
491 struct gl_texture_unit
*texUnit
= &ctx
->Texture
.Unit
[unit
];
492 struct gl_texture_object
*texObj
;
493 struct gl_texture_image
*texImage
;
494 struct st_texture_image
*stImage
;
495 struct st_renderbuffer
*strb
;
496 GLint face
= 0, slice
= 0;
498 assert(surfIndex
<= ST_SURFACE_DEPTH
);
500 strb
= st_renderbuffer(stfb
->Base
.Attachment
[surfIndex
].Renderbuffer
);
502 if (strb
->texture_save
|| strb
->surface_save
) {
507 if (target
== ST_TEXTURE_2D
) {
508 texObj
= texUnit
->CurrentTex
[TEXTURE_2D_INDEX
];
509 texImage
= _mesa_get_tex_image(ctx
, texObj
, GL_TEXTURE_2D
, level
);
510 stImage
= st_texture_image(texImage
);
513 /* unsupported target */
517 st_flush(ctx
->st
, PIPE_FLUSH_RENDER_CACHE
, NULL
);
519 /* save the renderbuffer's surface/texture info */
520 pipe_texture_reference(&strb
->texture_save
, strb
->texture
);
521 pipe_surface_reference(&strb
->surface_save
, strb
->surface
);
523 /* plug in new surface/texture info */
524 pipe_texture_reference(&strb
->texture
, stImage
->pt
);
525 strb
->surface
= screen
->get_tex_surface(screen
, strb
->texture
,
527 (PIPE_BUFFER_USAGE_GPU_READ
|
528 PIPE_BUFFER_USAGE_GPU_WRITE
));
530 st
->dirty
.st
|= ST_NEW_FRAMEBUFFER
;
536 /** Undo surface-to-texture binding */
538 st_release_teximage(struct st_framebuffer
*stfb
, uint surfIndex
,
539 int target
, int format
, int level
)
541 GET_CURRENT_CONTEXT(ctx
);
542 struct st_context
*st
= ctx
->st
;
543 struct st_renderbuffer
*strb
;
545 assert(surfIndex
<= ST_SURFACE_DEPTH
);
547 strb
= st_renderbuffer(stfb
->Base
.Attachment
[surfIndex
].Renderbuffer
);
549 if (!strb
->texture_save
|| !strb
->surface_save
) {
554 st_flush(ctx
->st
, PIPE_FLUSH_RENDER_CACHE
, NULL
);
556 /* free tex surface, restore original */
557 pipe_surface_reference(&strb
->surface
, strb
->surface_save
);
558 pipe_texture_reference(&strb
->texture
, strb
->texture_save
);
560 pipe_surface_reference(&strb
->surface_save
, NULL
);
561 pipe_texture_reference(&strb
->texture_save
, NULL
);
563 st
->dirty
.st
|= ST_NEW_FRAMEBUFFER
;
569 st_teximage_flush_before_map(struct st_context
*st
,
570 struct pipe_texture
*pt
,
573 enum pipe_transfer_usage usage
)
575 struct pipe_context
*pipe
= st
->pipe
;
576 unsigned referenced
=
577 pipe
->is_texture_referenced(pipe
, pt
, face
, level
);
579 if (referenced
&& ((referenced
& PIPE_REFERENCED_FOR_WRITE
) ||
580 usage
== PIPE_TRANSFER_WRITE
||
581 usage
== PIPE_TRANSFER_READ_WRITE
))
582 st_flush(st
, PIPE_FLUSH_RENDER_CACHE
, NULL
);