1 /**************************************************************************
3 * Copyright 2006 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 **************************************************************************/
29 * Keith Whitwell <keith@tungstengraphics.com>
30 * Michel Dänzer <michel@tungstengraphics.com>
33 #include "pipe/p_state.h"
34 #include "pipe/p_context.h"
35 #include "pipe/p_defines.h"
36 #include "util/u_inlines.h"
37 #include "util/u_format.h"
38 #include "util/u_math.h"
39 #include "util/u_memory.h"
41 #include "i915_context.h"
42 #include "i915_resource.h"
43 #include "i915_screen.h"
44 #include "i915_winsys.h"
48 * Helper function and arrays
53 * Initial offset for Cube map.
55 static const int initial_offsets[6][2] = {
65 * Step offsets for Cube map.
67 static const int step_offsets[6][2] = {
76 /* XXX really need twice the size if x is already pot?
77 Otherwise just use util_next_power_of_two?
80 power_of_two(unsigned x)
89 * More advanced helper funcs
94 i915_texture_set_level_info(struct i915_texture *tex,
97 unsigned w, unsigned h, unsigned d)
99 assert(level < Elements(tex->nr_images));
101 tex->nr_images[level] = nr_images;
104 DBG("%s level %d size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
105 level, w, h, d, x, y, tex->level_offset[level]);
108 /* Not sure when this would happen, but anyway:
110 if (tex->image_offset[level]) {
111 FREE(tex->image_offset[level]);
112 tex->image_offset[level] = NULL;
116 assert(!tex->image_offset[level]);
118 tex->image_offset[level] = (unsigned *) MALLOC(nr_images * sizeof(unsigned));
119 tex->image_offset[level][0] = 0;
123 i915_texture_set_image_offset(struct i915_texture *tex,
124 unsigned level, unsigned img, unsigned x, unsigned y)
126 if (img == 0 && level == 0)
127 assert(x == 0 && y == 0);
129 assert(img < tex->nr_images[level]);
131 tex->image_offset[level][img] = y * tex->stride + x * util_format_get_blocksize(tex->b.b.format);
134 printf("%s level %d img %d pos %d,%d image_offset %x\n",
135 __FUNCTION__, level, img, x, y, tex->image_offset[level][img]);
141 * i915 layout functions, some used by i945
146 * Special case to deal with scanout textures.
149 i915_scanout_layout(struct i915_texture *tex)
151 struct pipe_resource *pt = &tex->b.b;
153 if (pt->last_level > 0 || util_format_get_blocksize(pt->format) != 4)
156 i915_texture_set_level_info(tex, 0, 1,
160 i915_texture_set_image_offset(tex, 0, 0, 0, 0);
162 if (pt->width0 >= 240) {
163 tex->stride = power_of_two(util_format_get_stride(pt->format, pt->width0));
164 tex->total_nblocksy = align(util_format_get_nblocksy(pt->format, pt->height0), 8);
165 tex->hw_tiled = I915_TILE_X;
166 } else if (pt->width0 == 64 && pt->height0 == 64) {
167 tex->stride = power_of_two(util_format_get_stride(pt->format, pt->width0));
168 tex->total_nblocksy = align(util_format_get_nblocksy(pt->format, pt->height0), 8);
173 debug_printf("%s size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
174 pt->width0, pt->height0, util_format_get_blocksize(pt->format),
175 tex->stride, tex->total_nblocksy, tex->stride * tex->total_nblocksy);
181 * Special case to deal with shared textures.
184 i915_display_target_layout(struct i915_texture *tex)
186 struct pipe_resource *pt = &tex->b.b;
188 if (pt->last_level > 0 || util_format_get_blocksize(pt->format) != 4)
191 /* fallback to normal textures for small textures */
192 if (pt->width0 < 240)
195 i915_texture_set_level_info(tex, 0, 1,
199 i915_texture_set_image_offset(tex, 0, 0, 0, 0);
201 tex->stride = power_of_two(util_format_get_stride(pt->format, pt->width0));
202 tex->total_nblocksy = align(util_format_get_nblocksy(pt->format, pt->height0), 8);
203 tex->hw_tiled = I915_TILE_X;
205 debug_printf("%s size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
206 pt->width0, pt->height0, util_format_get_blocksize(pt->format),
207 tex->stride, tex->total_nblocksy, tex->stride * tex->total_nblocksy);
213 i915_texture_layout_2d(struct i915_texture *tex)
215 struct pipe_resource *pt = &tex->b.b;
217 unsigned width = pt->width0;
218 unsigned height = pt->height0;
219 unsigned nblocksy = util_format_get_nblocksy(pt->format, pt->width0);
221 /* used for scanouts that need special layouts */
222 if (pt->bind & PIPE_BIND_SCANOUT)
223 if (i915_scanout_layout(tex))
226 /* shared buffers needs to be compatible with X servers
228 * XXX: need a better name than shared for this if it is to be part
229 * of core gallium, and probably move the flag to resource.flags,
230 * rather than bindings.
232 if (pt->bind & PIPE_BIND_SHARED)
233 if (i915_display_target_layout(tex))
236 tex->stride = align(util_format_get_stride(pt->format, pt->width0), 4);
237 tex->total_nblocksy = 0;
239 for (level = 0; level <= pt->last_level; level++) {
240 i915_texture_set_level_info(tex, level, 1, width, height, 1);
241 i915_texture_set_image_offset(tex, level, 0, 0, tex->total_nblocksy);
243 nblocksy = align(MAX2(2, nblocksy), 2);
245 tex->total_nblocksy += nblocksy;
247 width = u_minify(width, 1);
248 height = u_minify(height, 1);
249 nblocksy = util_format_get_nblocksy(pt->format, height);
254 i915_texture_layout_3d(struct i915_texture *tex)
256 struct pipe_resource *pt = &tex->b.b;
259 unsigned width = pt->width0;
260 unsigned height = pt->height0;
261 unsigned depth = pt->depth0;
262 unsigned nblocksy = util_format_get_nblocksy(pt->format, pt->height0);
263 unsigned stack_nblocksy = 0;
265 /* Calculate the size of a single slice.
267 tex->stride = align(util_format_get_stride(pt->format, pt->width0), 4);
269 /* XXX: hardware expects/requires 9 levels at minimum.
271 for (level = 0; level <= MAX2(8, pt->last_level); level++) {
272 i915_texture_set_level_info(tex, level, depth, width, height, depth);
274 stack_nblocksy += MAX2(2, nblocksy);
276 width = u_minify(width, 1);
277 height = u_minify(height, 1);
278 nblocksy = util_format_get_nblocksy(pt->format, height);
281 /* Fixup depth image_offsets:
283 for (level = 0; level <= pt->last_level; level++) {
285 for (i = 0; i < depth; i++)
286 i915_texture_set_image_offset(tex, level, i, 0, i * stack_nblocksy);
288 depth = u_minify(depth, 1);
291 /* Multiply slice size by texture depth for total size. It's
292 * remarkable how wasteful of memory the i915 texture layouts
293 * are. They are largely fixed in the i945.
295 tex->total_nblocksy = stack_nblocksy * pt->depth0;
299 i915_texture_layout_cube(struct i915_texture *tex)
301 struct pipe_resource *pt = &tex->b.b;
302 unsigned width = pt->width0, height = pt->height0;
303 const unsigned nblocks = util_format_get_nblocksx(pt->format, pt->width0);
307 assert(width == height); /* cubemap images are square */
309 /* double pitch for cube layouts */
310 tex->stride = align(nblocks * util_format_get_blocksize(pt->format) * 2, 4);
311 tex->total_nblocksy = nblocks * 4;
313 for (level = 0; level <= pt->last_level; level++) {
314 i915_texture_set_level_info(tex, level, 6, width, height, 1);
319 for (face = 0; face < 6; face++) {
320 unsigned x = initial_offsets[face][0] * nblocks;
321 unsigned y = initial_offsets[face][1] * nblocks;
322 unsigned d = nblocks;
324 for (level = 0; level <= pt->last_level; level++) {
325 i915_texture_set_image_offset(tex, level, face, x, y);
327 x += step_offsets[face][0] * d;
328 y += step_offsets[face][1] * d;
334 i915_texture_layout(struct i915_texture * tex)
336 struct pipe_resource *pt = &tex->b.b;
338 switch (pt->target) {
339 case PIPE_TEXTURE_1D:
340 case PIPE_TEXTURE_2D:
341 i915_texture_layout_2d(tex);
343 case PIPE_TEXTURE_3D:
344 i915_texture_layout_3d(tex);
346 case PIPE_TEXTURE_CUBE:
347 i915_texture_layout_cube(tex);
359 * i945 layout functions
364 i945_texture_layout_2d(struct i915_texture *tex)
366 struct pipe_resource *pt = &tex->b.b;
367 const int align_x = 2, align_y = 4;
371 unsigned width = pt->width0;
372 unsigned height = pt->height0;
373 unsigned nblocksx = util_format_get_nblocksx(pt->format, pt->width0);
374 unsigned nblocksy = util_format_get_nblocksy(pt->format, pt->height0);
376 /* used for scanouts that need special layouts */
377 if (tex->b.b.bind & PIPE_BIND_SCANOUT)
378 if (i915_scanout_layout(tex))
381 /* shared buffers needs to be compatible with X servers */
382 if (tex->b.b.bind & PIPE_BIND_SHARED)
383 if (i915_display_target_layout(tex))
386 tex->stride = align(util_format_get_stride(pt->format, pt->width0), 4);
388 /* May need to adjust pitch to accomodate the placement of
389 * the 2nd mipmap level. This occurs when the alignment
390 * constraints of mipmap placement push the right edge of the
391 * 2nd mipmap level out past the width of its parent.
393 if (pt->last_level > 0) {
394 unsigned mip1_nblocksx
395 = align(util_format_get_nblocksx(pt->format, u_minify(width, 1)), align_x)
396 + util_format_get_nblocksx(pt->format, u_minify(width, 2));
398 if (mip1_nblocksx > nblocksx)
399 tex->stride = mip1_nblocksx * util_format_get_blocksize(pt->format);
402 /* Pitch must be a whole number of dwords
404 tex->stride = align(tex->stride, 64);
405 tex->total_nblocksy = 0;
407 for (level = 0; level <= pt->last_level; level++) {
408 i915_texture_set_level_info(tex, level, 1, width, height, 1);
409 i915_texture_set_image_offset(tex, level, 0, x, y);
411 nblocksy = align(nblocksy, align_y);
413 /* Because the images are packed better, the final offset
414 * might not be the maximal one:
416 tex->total_nblocksy = MAX2(tex->total_nblocksy, y + nblocksy);
418 /* Layout_below: step right after second mipmap level.
421 x += align(nblocksx, align_x);
427 width = u_minify(width, 1);
428 height = u_minify(height, 1);
429 nblocksx = util_format_get_nblocksx(pt->format, width);
430 nblocksy = util_format_get_nblocksy(pt->format, height);
435 i945_texture_layout_3d(struct i915_texture *tex)
437 struct pipe_resource *pt = &tex->b.b;
438 unsigned width = pt->width0;
439 unsigned height = pt->height0;
440 unsigned depth = pt->depth0;
441 unsigned nblocksy = util_format_get_nblocksy(pt->format, pt->width0);
442 unsigned pack_x_pitch, pack_x_nr;
443 unsigned pack_y_pitch;
446 tex->stride = align(util_format_get_stride(pt->format, pt->width0), 4);
447 tex->total_nblocksy = 0;
449 pack_y_pitch = MAX2(nblocksy, 2);
450 pack_x_pitch = tex->stride / util_format_get_blocksize(pt->format);
453 for (level = 0; level <= pt->last_level; level++) {
458 i915_texture_set_level_info(tex, level, depth, width, height, depth);
460 for (q = 0; q < depth;) {
461 for (j = 0; j < pack_x_nr && q < depth; j++, q++) {
462 i915_texture_set_image_offset(tex, level, q, x, y + tex->total_nblocksy);
470 tex->total_nblocksy += y;
472 if (pack_x_pitch > 4) {
475 assert(pack_x_pitch * pack_x_nr * util_format_get_blocksize(pt->format) <= tex->stride);
478 if (pack_y_pitch > 2) {
482 width = u_minify(width, 1);
483 height = u_minify(height, 1);
484 depth = u_minify(depth, 1);
485 nblocksy = util_format_get_nblocksy(pt->format, height);
490 i945_texture_layout_cube(struct i915_texture *tex)
492 struct pipe_resource *pt = &tex->b.b;
495 const unsigned nblocks = util_format_get_nblocksx(pt->format, pt->width0);
497 unsigned width = pt->width0;
498 unsigned height = pt->height0;
501 printf("%s %i, %i\n", __FUNCTION__, pt->width0, pt->height0);
504 assert(width == height); /* cubemap images are square */
507 * XXX Should only be used for compressed formats. But lets
508 * keep this code active just in case.
510 * Depending on the size of the largest images, pitch can be
511 * determined either by the old-style packing of cubemap faces,
512 * or the final row of 4x4, 2x2 and 1x1 faces below this.
515 tex->stride = align(nblocks * util_format_get_blocksize(pt->format) * 2, 4);
517 tex->stride = 14 * 8 * util_format_get_blocksize(pt->format);
519 tex->total_nblocksy = nblocks * 4;
521 /* Set all the levels to effectively occupy the whole rectangular region.
523 for (level = 0; level <= pt->last_level; level++) {
524 i915_texture_set_level_info(tex, level, 6, width, height, 1);
529 for (face = 0; face < 6; face++) {
530 unsigned x = initial_offsets[face][0] * nblocks;
531 unsigned y = initial_offsets[face][1] * nblocks;
532 unsigned d = nblocks;
534 #if 0 /* Fix and enable this code for compressed formats */
535 if (nblocks == 4 && face >= 4) {
536 y = tex->total_height - 4;
539 else if (nblocks < 4 && (face > 0)) {
540 y = tex->total_height - 4;
545 for (level = 0; level <= pt->last_level; level++) {
546 i915_texture_set_image_offset(tex, level, face, x, y);
550 #if 0 /* Fix and enable this code for compressed formats */
554 case PIPE_TEX_FACE_POS_X:
555 case PIPE_TEX_FACE_NEG_X:
556 x += step_offsets[face][0] * d;
557 y += step_offsets[face][1] * d;
559 case PIPE_TEX_FACE_POS_Y:
560 case PIPE_TEX_FACE_NEG_Y:
564 case PIPE_TEX_FACE_POS_Z:
565 case PIPE_TEX_FACE_NEG_Z:
566 y = tex->total_height - 4;
571 y = tex->total_height - 4;
580 x += step_offsets[face][0] * d;
581 y += step_offsets[face][1] * d;
591 i945_texture_layout(struct i915_texture * tex)
593 struct pipe_resource *pt = &tex->b.b;
595 switch (pt->target) {
596 case PIPE_TEXTURE_1D:
597 case PIPE_TEXTURE_2D:
598 i945_texture_layout_2d(tex);
600 case PIPE_TEXTURE_3D:
601 i945_texture_layout_3d(tex);
603 case PIPE_TEXTURE_CUBE:
604 i945_texture_layout_cube(tex);
617 * Screen texture functions
623 i915_texture_get_handle(struct pipe_screen * screen,
624 struct pipe_resource *texture,
625 struct winsys_handle *whandle)
627 struct i915_screen *is = i915_screen(screen);
628 struct i915_texture *tex = i915_texture(texture);
629 struct i915_winsys *iws = is->iws;
631 return iws->buffer_get_handle(iws, tex->buffer, whandle, tex->stride);
636 i915_texture_destroy(struct pipe_screen *screen,
637 struct pipe_resource *pt)
639 struct i915_texture *tex = i915_texture(pt);
640 struct i915_winsys *iws = i915_screen(screen)->iws;
644 DBG("%s deleting %p\n", __FUNCTION__, (void *) tex);
647 iws->buffer_destroy(iws, tex->buffer);
649 for (i = 0; i < Elements(tex->image_offset); i++)
650 if (tex->image_offset[i])
651 FREE(tex->image_offset[i]);
656 static struct pipe_transfer *
657 i915_texture_get_transfer(struct pipe_context *context,
658 struct pipe_resource *resource,
659 struct pipe_subresource sr,
661 const struct pipe_box *box)
663 struct i915_texture *tex = i915_texture(resource);
664 struct pipe_transfer *transfer = CALLOC_STRUCT(pipe_transfer);
665 if (transfer == NULL)
668 transfer->resource = resource;
670 transfer->usage = usage;
671 transfer->box = *box;
672 transfer->stride = tex->stride;
679 i915_texture_transfer_map(struct pipe_context *pipe,
680 struct pipe_transfer *transfer)
682 struct pipe_resource *resource = transfer->resource;
683 struct i915_texture *tex = i915_texture(resource);
684 struct i915_winsys *iws = i915_screen(pipe->screen)->iws;
685 struct pipe_subresource sr = transfer->sr;
686 struct pipe_box *box = &transfer->box;
687 enum pipe_format format = resource->format;
691 if (resource->target == PIPE_TEXTURE_CUBE) {
692 offset = tex->image_offset[sr.level][sr.face];
694 else if (resource->target == PIPE_TEXTURE_3D) {
695 offset = tex->image_offset[sr.level][box->z];
698 offset = tex->image_offset[sr.level][0];
699 assert(sr.face == 0);
703 map = iws->buffer_map(iws,
705 (transfer->usage & PIPE_TRANSFER_WRITE) ? TRUE : FALSE);
709 return map + offset +
710 box->y / util_format_get_blockheight(format) * transfer->stride +
711 box->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
715 i915_texture_transfer_unmap(struct pipe_context *pipe,
716 struct pipe_transfer *transfer)
718 struct i915_texture *tex = i915_texture(transfer->resource);
719 struct i915_winsys *iws = i915_screen(tex->b.b.screen)->iws;
720 iws->buffer_unmap(iws, tex->buffer);
725 struct u_resource_vtbl i915_texture_vtbl =
727 i915_texture_get_handle, /* get_handle */
728 i915_texture_destroy, /* resource_destroy */
729 NULL, /* is_resource_referenced */
730 i915_texture_get_transfer, /* get_transfer */
731 u_default_transfer_destroy, /* transfer_destroy */
732 i915_texture_transfer_map, /* transfer_map */
733 u_default_transfer_flush_region, /* transfer_flush_region */
734 i915_texture_transfer_unmap, /* transfer_unmap */
735 u_default_transfer_inline_write /* transfer_inline_write */
741 struct pipe_resource *
742 i915_texture_create(struct pipe_screen *screen,
743 const struct pipe_resource *template)
745 struct i915_screen *is = i915_screen(screen);
746 struct i915_winsys *iws = is->iws;
747 struct i915_texture *tex = CALLOC_STRUCT(i915_texture);
749 unsigned buf_usage = 0;
754 tex->b.b = *template;
755 tex->b.vtbl = &i915_texture_vtbl;
756 pipe_reference_init(&tex->b.b.reference, 1);
757 tex->b.b.screen = screen;
760 if (!i945_texture_layout(tex))
763 if (!i915_texture_layout(tex))
767 tex_size = tex->stride * tex->total_nblocksy;
769 /* for scanouts and cursors, cursors arn't scanouts */
771 /* XXX: use a custom flag for cursors, don't rely on magically
772 * guessing that this is Xorg asking for a cursor
774 if ((template->bind & PIPE_BIND_SCANOUT) && template->width0 != 64)
775 buf_usage = I915_NEW_SCANOUT;
777 buf_usage = I915_NEW_TEXTURE;
779 tex->buffer = iws->buffer_create(iws, tex_size, 64, buf_usage);
783 /* setup any hw fences */
785 assert(tex->sw_tiled == I915_TILE_NONE);
786 iws->buffer_set_fence_reg(iws, tex->buffer, tex->stride, tex->hw_tiled);
791 void *ptr = ws->buffer_map(ws, tex->buffer,
792 PIPE_BUFFER_USAGE_CPU_WRITE);
793 memset(ptr, 0x80, tex_size);
794 ws->buffer_unmap(ws, tex->buffer);
804 struct pipe_resource *
805 i915_texture_from_handle(struct pipe_screen * screen,
806 const struct pipe_resource *template,
807 struct winsys_handle *whandle)
809 struct i915_screen *is = i915_screen(screen);
810 struct i915_texture *tex;
811 struct i915_winsys *iws = is->iws;
812 struct i915_winsys_buffer *buffer;
817 buffer = iws->buffer_from_handle(iws, whandle, &stride);
819 /* Only supports one type */
820 if (template->target != PIPE_TEXTURE_2D ||
821 template->last_level != 0 ||
822 template->depth0 != 1) {
826 tex = CALLOC_STRUCT(i915_texture);
830 tex->b.b = *template;
831 tex->b.vtbl = &i915_texture_vtbl;
832 pipe_reference_init(&tex->b.b.reference, 1);
833 tex->b.b.screen = screen;
835 tex->stride = stride;
837 i915_texture_set_level_info(tex, 0, 1, template->width0, template->height0, 1);
838 i915_texture_set_image_offset(tex, 0, 0, 0, 0);
840 tex->buffer = buffer;