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/texfetch.h"
36 #include "main/teximage.h"
37 #include "main/texobj.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 "util/u_inlines.h"
45 #include "util/u_format.h"
46 #include "util/u_rect.h"
47 #include "util/u_math.h"
50 #define DBG if(0) printf
54 target_to_target(GLenum target)
57 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
58 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
59 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
60 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
61 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
62 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
63 return GL_TEXTURE_CUBE_MAP_ARB;
72 * Allocate a new pipe_texture object
73 * width0, height0, depth0 are the dimensions of the level 0 image
74 * (the highest resolution). last_level indicates how many mipmap levels
75 * to allocate storage for. For non-mipmapped textures, this will be zero.
78 st_texture_create(struct st_context *st,
79 enum pipe_texture_target target,
80 enum pipe_format format,
87 struct pipe_texture pt, *newtex;
88 struct pipe_screen *screen = st->pipe->screen;
90 assert(target <= PIPE_TEXTURE_CUBE);
92 DBG("%s target %s format %s last_level %d\n", __FUNCTION__,
93 _mesa_lookup_enum_by_nr(target),
94 _mesa_lookup_enum_by_nr(format), last_level);
97 assert(screen->is_format_supported(screen, format, target,
98 PIPE_TEXTURE_USAGE_SAMPLER, 0));
100 memset(&pt, 0, sizeof(pt));
103 pt.last_level = last_level;
105 pt.height0 = height0;
107 pt.tex_usage = usage;
109 newtex = screen->texture_create(screen, &pt);
111 assert(!newtex || pipe_is_referenced(&newtex->reference));
118 * Check if a texture image can be pulled into a unified mipmap texture.
121 st_texture_match_image(const struct pipe_texture *pt,
122 const struct gl_texture_image *image,
123 GLuint face, GLuint level)
125 /* Images with borders are never pulled into mipmap textures.
130 /* Check if this image's format matches the established texture's format.
132 if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format)
135 /* Test if this image's size matches what's expected in the
136 * established texture.
138 if (image->Width != u_minify(pt->width0, level) ||
139 image->Height != u_minify(pt->height0, level) ||
140 image->Depth != u_minify(pt->depth0, level))
148 /* Although we use the image_offset[] array to store relative offsets
149 * to cube faces, Mesa doesn't know anything about this and expects
150 * each cube face to be treated as a separate image.
152 * These functions present that view to mesa:
155 st_texture_depth_offsets(struct pipe_texture *pt, GLuint level)
157 static const GLuint zero = 0;
159 if (pt->target != PIPE_TEXTURE_3D || pt->level[level].nr_images == 1)
162 return pt->level[level].image_offset;
167 * Return the offset to the given mipmap texture image within the
168 * texture memory buffer, in bytes.
171 st_texture_image_offset(const struct pipe_texture * pt,
172 GLuint face, GLuint level)
174 if (pt->target == PIPE_TEXTURE_CUBE)
175 return (pt->level[level].level_offset +
176 pt->level[level].image_offset[face] * pt->cpp);
178 return pt->level[level].level_offset;
184 * Map a teximage in a mipmap texture.
185 * \param row_stride returns row stride in bytes
186 * \param image_stride returns image stride in bytes (for 3D textures).
187 * \return address of mapping
190 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
191 GLuint zoffset, enum pipe_transfer_usage usage,
192 GLuint x, GLuint y, GLuint w, GLuint h)
194 struct pipe_context *pipe = st->pipe;
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 pipe->transfer_map(pipe, stImage->transfer);
211 st_texture_image_unmap(struct st_context *st,
212 struct st_texture_image *stImage)
214 struct pipe_context *pipe = st->pipe;
216 DBG("%s\n", __FUNCTION__);
218 pipe->transfer_unmap(pipe, stImage->transfer);
220 pipe->tex_transfer_destroy(pipe, 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 void *map = pipe->transfer_map(pipe, dst);
242 assert(dst->texture);
244 dst->texture->format,
251 pipe->transfer_unmap(pipe, 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 GLuint depth = u_minify(dst->depth0, level);
268 const GLubyte *srcUB = src;
269 struct pipe_transfer *dst_transfer;
271 DBG("%s\n", __FUNCTION__);
273 for (i = 0; i < depth; i++) {
274 dst_transfer = st_no_flush_get_tex_transfer(st, dst, face, level, i,
275 PIPE_TRANSFER_WRITE, 0, 0,
276 u_minify(dst->width0, level),
277 u_minify(dst->height0, level));
279 st_surface_data(pipe, dst_transfer,
280 0, 0, /* dstx, dsty */
283 0, 0, /* source x, y */
284 u_minify(dst->width0, level),
285 u_minify(dst->height0, level)); /* width, height */
287 pipe->tex_transfer_destroy(pipe, 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 = u_minify(dst->width0, dstLevel);
304 GLuint height = u_minify(dst->height0, dstLevel);
305 GLuint depth = u_minify(dst->depth0, 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 (u_minify(src->width0, srcLevel) == width &&
316 u_minify(src->height0, srcLevel) == height) {
320 assert(u_minify(src->width0, srcLevel) == width);
321 assert(u_minify(src->height0, 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 (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 3) > 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);
522 pipe_sampler_view_reference(&strb->sampler_view_save, strb->sampler_view);
524 /* plug in new surface/texture info */
525 pipe_texture_reference(&strb->texture, stImage->pt);
527 /* XXX: Shouldn't we release reference to old surface here?
530 strb->surface = screen->get_tex_surface(screen, strb->texture,
532 (PIPE_BUFFER_USAGE_GPU_READ |
533 PIPE_BUFFER_USAGE_GPU_WRITE));
535 pipe_sampler_view_reference(&strb->sampler_view, NULL);
537 st->dirty.st |= ST_NEW_FRAMEBUFFER;
543 /** Undo surface-to-texture binding */
545 st_release_teximage(struct st_framebuffer *stfb, uint surfIndex,
546 int target, int format, int level)
548 GET_CURRENT_CONTEXT(ctx);
549 struct st_context *st = ctx->st;
550 struct st_renderbuffer *strb;
552 assert(surfIndex <= ST_SURFACE_DEPTH);
554 strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);
556 if (!strb->texture_save || !strb->surface_save) {
561 st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
563 /* free tex surface, restore original */
564 pipe_surface_reference(&strb->surface, strb->surface_save);
565 pipe_texture_reference(&strb->texture, strb->texture_save);
566 pipe_sampler_view_reference(&strb->sampler_view, strb->sampler_view_save);
568 pipe_surface_reference(&strb->surface_save, NULL);
569 pipe_texture_reference(&strb->texture_save, NULL);
570 pipe_sampler_view_reference(&strb->sampler_view, NULL);
572 st->dirty.st |= ST_NEW_FRAMEBUFFER;
578 st_teximage_flush_before_map(struct st_context *st,
579 struct pipe_texture *pt,
582 enum pipe_transfer_usage usage)
584 struct pipe_context *pipe = st->pipe;
585 unsigned referenced =
586 pipe->is_texture_referenced(pipe, pt, face, level);
588 if (referenced && ((referenced & PIPE_REFERENCED_FOR_WRITE) ||
589 (usage & PIPE_TRANSFER_WRITE)))
590 st->pipe->flush(st->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);