1 /**************************************************************************
3 * Copyright 2003 VMware, Inc.
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 VMWARE 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 #include "main/mtypes.h"
30 #include "main/context.h"
31 #include "main/enums.h"
32 #include "main/colormac.h"
33 #include "main/fbobject.h"
35 #include "brw_context.h"
36 #include "brw_defines.h"
37 #include "intel_blit.h"
38 #include "intel_buffers.h"
39 #include "intel_fbo.h"
40 #include "intel_reg.h"
41 #include "intel_batchbuffer.h"
42 #include "intel_mipmap_tree.h"
44 #define FILE_DEBUG_FLAG DEBUG_BLIT
47 intel_miptree_set_alpha_to_one(struct brw_context
*brw
,
48 struct intel_mipmap_tree
*mt
,
49 int x
, int y
, int width
, int height
);
51 static GLuint
translate_raster_op(GLenum logicop
)
54 case GL_CLEAR
: return 0x00;
55 case GL_AND
: return 0x88;
56 case GL_AND_REVERSE
: return 0x44;
57 case GL_COPY
: return 0xCC;
58 case GL_AND_INVERTED
: return 0x22;
59 case GL_NOOP
: return 0xAA;
60 case GL_XOR
: return 0x66;
61 case GL_OR
: return 0xEE;
62 case GL_NOR
: return 0x11;
63 case GL_EQUIV
: return 0x99;
64 case GL_INVERT
: return 0x55;
65 case GL_OR_REVERSE
: return 0xDD;
66 case GL_COPY_INVERTED
: return 0x33;
67 case GL_OR_INVERTED
: return 0xBB;
68 case GL_NAND
: return 0x77;
69 case GL_SET
: return 0xFF;
94 * Emits the packet for switching the blitter from X to Y tiled or back.
96 * This has to be called in a single BEGIN_BATCH_BLT_TILED() /
97 * ADVANCE_BATCH_TILED(). This is because BCS_SWCTRL is saved and restored as
98 * part of the power context, not a render context, and if the batchbuffer was
99 * to get flushed between setting and blitting, or blitting and restoring, our
100 * tiling state would leak into other unsuspecting applications (like the X
104 set_blitter_tiling(struct brw_context
*brw
,
105 bool dst_y_tiled
, bool src_y_tiled
)
107 assert(brw
->gen
>= 6);
109 /* Idle the blitter before we update how tiling is interpreted. */
110 OUT_BATCH(MI_FLUSH_DW
);
115 OUT_BATCH(MI_LOAD_REGISTER_IMM
| (3 - 2));
116 OUT_BATCH(BCS_SWCTRL
);
117 OUT_BATCH((BCS_SWCTRL_DST_Y
| BCS_SWCTRL_SRC_Y
) << 16 |
118 (dst_y_tiled
? BCS_SWCTRL_DST_Y
: 0) |
119 (src_y_tiled
? BCS_SWCTRL_SRC_Y
: 0));
122 #define BEGIN_BATCH_BLT_TILED(n, dst_y_tiled, src_y_tiled) do { \
123 BEGIN_BATCH_BLT(n + ((dst_y_tiled || src_y_tiled) ? 14 : 0)); \
124 if (dst_y_tiled || src_y_tiled) \
125 set_blitter_tiling(brw, dst_y_tiled, src_y_tiled); \
128 #define ADVANCE_BATCH_TILED(dst_y_tiled, src_y_tiled) do { \
129 if (dst_y_tiled || src_y_tiled) \
130 set_blitter_tiling(brw, false, false); \
135 * Implements a rectangular block transfer (blit) of pixels between two
138 * Our blitter can operate on 1, 2, or 4-byte-per-pixel data, with generous,
139 * but limited, pitches and sizes allowed.
141 * The src/dst coordinates are relative to the given level/slice of the
144 * If @src_flip or @dst_flip is set, then the rectangle within that miptree
145 * will be inverted (including scanline order) when copying. This is common
146 * in GL when copying between window system and user-created
147 * renderbuffers/textures.
150 intel_miptree_blit(struct brw_context
*brw
,
151 struct intel_mipmap_tree
*src_mt
,
152 int src_level
, int src_slice
,
153 uint32_t src_x
, uint32_t src_y
, bool src_flip
,
154 struct intel_mipmap_tree
*dst_mt
,
155 int dst_level
, int dst_slice
,
156 uint32_t dst_x
, uint32_t dst_y
, bool dst_flip
,
157 uint32_t width
, uint32_t height
,
160 /* The blitter doesn't understand multisampling at all. */
161 if (src_mt
->num_samples
> 0 || dst_mt
->num_samples
> 0)
164 /* No sRGB decode or encode is done by the hardware blitter, which is
165 * consistent with what we want in the callers (glCopyTexSubImage(),
166 * glBlitFramebuffer(), texture validation, etc.).
168 mesa_format src_format
= _mesa_get_srgb_format_linear(src_mt
->format
);
169 mesa_format dst_format
= _mesa_get_srgb_format_linear(dst_mt
->format
);
171 /* The blitter doesn't support doing any format conversions. We do also
172 * support blitting ARGB8888 to XRGB8888 (trivial, the values dropped into
173 * the X channel don't matter), and XRGB8888 to ARGB8888 by setting the A
174 * channel to 1.0 at the end.
176 if (src_format
!= dst_format
&&
177 ((src_format
!= MESA_FORMAT_B8G8R8A8_UNORM
&&
178 src_format
!= MESA_FORMAT_B8G8R8X8_UNORM
) ||
179 (dst_format
!= MESA_FORMAT_B8G8R8A8_UNORM
&&
180 dst_format
!= MESA_FORMAT_B8G8R8X8_UNORM
))) {
181 perf_debug("%s: Can't use hardware blitter from %s to %s, "
182 "falling back.\n", __FUNCTION__
,
183 _mesa_get_format_name(src_format
),
184 _mesa_get_format_name(dst_format
));
188 /* According to the Ivy Bridge PRM, Vol1 Part4, section 1.2.1.2 (Graphics
189 * Data Size Limitations):
191 * The BLT engine is capable of transferring very large quantities of
192 * graphics data. Any graphics data read from and written to the
193 * destination is permitted to represent a number of pixels that
194 * occupies up to 65,536 scan lines and up to 32,768 bytes per scan line
195 * at the destination. The maximum number of pixels that may be
196 * represented per scan line’s worth of graphics data depends on the
199 * Furthermore, intelEmitCopyBlit (which is called below) uses a signed
200 * 16-bit integer to represent buffer pitch, so it can only handle buffer
203 * As a result of these two limitations, we can only use the blitter to do
204 * this copy when the miptree's pitch is less than 32k.
206 if (src_mt
->pitch
>= 32768 ||
207 dst_mt
->pitch
>= 32768) {
208 perf_debug("Falling back due to >=32k pitch\n");
212 /* The blitter has no idea about HiZ or fast color clears, so we need to
213 * resolve the miptrees before we do anything.
215 intel_miptree_slice_resolve_depth(brw
, src_mt
, src_level
, src_slice
);
216 intel_miptree_slice_resolve_depth(brw
, dst_mt
, dst_level
, dst_slice
);
217 intel_miptree_resolve_color(brw
, src_mt
);
218 intel_miptree_resolve_color(brw
, dst_mt
);
221 src_y
= minify(src_mt
->physical_height0
, src_level
- src_mt
->first_level
) - src_y
- height
;
224 dst_y
= minify(dst_mt
->physical_height0
, dst_level
- dst_mt
->first_level
) - dst_y
- height
;
226 int src_pitch
= src_mt
->pitch
;
227 if (src_flip
!= dst_flip
)
228 src_pitch
= -src_pitch
;
230 uint32_t src_image_x
, src_image_y
;
231 intel_miptree_get_image_offset(src_mt
, src_level
, src_slice
,
232 &src_image_x
, &src_image_y
);
233 src_x
+= src_image_x
;
234 src_y
+= src_image_y
;
236 /* The blitter interprets the 16-bit src x/y as a signed 16-bit value,
237 * where negative values are invalid. The values we're working with are
238 * unsigned, so make sure we don't overflow.
240 if (src_x
>= 32768 || src_y
>= 32768) {
241 perf_debug("Falling back due to >=32k src offset (%d, %d)\n",
246 uint32_t dst_image_x
, dst_image_y
;
247 intel_miptree_get_image_offset(dst_mt
, dst_level
, dst_slice
,
248 &dst_image_x
, &dst_image_y
);
249 dst_x
+= dst_image_x
;
250 dst_y
+= dst_image_y
;
252 /* The blitter interprets the 16-bit destination x/y as a signed 16-bit
253 * value. The values we're working with are unsigned, so make sure we
256 if (dst_x
>= 32768 || dst_y
>= 32768) {
257 perf_debug("Falling back due to >=32k dst offset (%d, %d)\n",
262 if (!intelEmitCopyBlit(brw
,
265 src_mt
->bo
, src_mt
->offset
,
268 dst_mt
->bo
, dst_mt
->offset
,
277 if (src_mt
->format
== MESA_FORMAT_B8G8R8X8_UNORM
&&
278 dst_mt
->format
== MESA_FORMAT_B8G8R8A8_UNORM
) {
279 intel_miptree_set_alpha_to_one(brw
, dst_mt
,
290 intelEmitCopyBlit(struct brw_context
*brw
,
293 drm_intel_bo
*src_buffer
,
297 drm_intel_bo
*dst_buffer
,
300 GLshort src_x
, GLshort src_y
,
301 GLshort dst_x
, GLshort dst_y
,
302 GLshort w
, GLshort h
,
305 GLuint CMD
, BR13
, pass
= 0;
306 int dst_y2
= dst_y
+ h
;
307 int dst_x2
= dst_x
+ w
;
308 drm_intel_bo
*aper_array
[3];
309 bool dst_y_tiled
= dst_tiling
== I915_TILING_Y
;
310 bool src_y_tiled
= src_tiling
== I915_TILING_Y
;
312 if (dst_tiling
!= I915_TILING_NONE
) {
313 if (dst_offset
& 4095)
316 if (src_tiling
!= I915_TILING_NONE
) {
317 if (src_offset
& 4095)
320 if ((dst_y_tiled
|| src_y_tiled
) && brw
->gen
< 6)
323 /* do space check before going any further */
325 aper_array
[0] = brw
->batch
.bo
;
326 aper_array
[1] = dst_buffer
;
327 aper_array
[2] = src_buffer
;
329 if (dri_bufmgr_check_aperture_space(aper_array
, 3) != 0) {
330 intel_batchbuffer_flush(brw
);
339 intel_batchbuffer_require_space(brw
, 8 * 4, BLT_RING
);
340 DBG("%s src:buf(%p)/%d+%d %d,%d dst:buf(%p)/%d+%d %d,%d sz:%dx%d\n",
342 src_buffer
, src_pitch
, src_offset
, src_x
, src_y
,
343 dst_buffer
, dst_pitch
, dst_offset
, dst_x
, dst_y
, w
, h
);
345 /* Blit pitch must be dword-aligned. Otherwise, the hardware appears to drop
348 if (src_pitch
% 4 != 0 || dst_pitch
% 4 != 0)
351 /* For big formats (such as floating point), do the copy using 16 or 32bpp
352 * and multiply the coordinates.
361 assert(cpp
% 4 == 0);
369 BR13
= br13_for_cpp(cpp
) | translate_raster_op(logic_op
) << 16;
374 CMD
= XY_SRC_COPY_BLT_CMD
;
377 CMD
= XY_SRC_COPY_BLT_CMD
| XY_BLT_WRITE_ALPHA
| XY_BLT_WRITE_RGB
;
383 if (dst_tiling
!= I915_TILING_NONE
) {
387 if (src_tiling
!= I915_TILING_NONE
) {
392 if (dst_y2
<= dst_y
|| dst_x2
<= dst_x
) {
396 assert(dst_x
< dst_x2
);
397 assert(dst_y
< dst_y2
);
398 assert(src_offset
+ (src_y
+ h
- 1) * abs(src_pitch
) +
399 (w
* cpp
) <= src_buffer
->size
);
400 assert(dst_offset
+ (dst_y
+ h
- 1) * abs(dst_pitch
) +
401 (w
* cpp
) <= dst_buffer
->size
);
403 unsigned length
= brw
->gen
>= 8 ? 10 : 8;
405 BEGIN_BATCH_BLT_TILED(length
, dst_y_tiled
, src_y_tiled
);
406 OUT_BATCH(CMD
| (length
- 2));
407 OUT_BATCH(BR13
| (uint16_t)dst_pitch
);
408 OUT_BATCH(SET_FIELD(dst_y
, BLT_Y
) | SET_FIELD(dst_x
, BLT_X
));
409 OUT_BATCH(SET_FIELD(dst_y2
, BLT_Y
) | SET_FIELD(dst_x2
, BLT_X
));
411 OUT_RELOC64(dst_buffer
,
412 I915_GEM_DOMAIN_RENDER
, I915_GEM_DOMAIN_RENDER
,
415 OUT_RELOC(dst_buffer
,
416 I915_GEM_DOMAIN_RENDER
, I915_GEM_DOMAIN_RENDER
,
419 OUT_BATCH(SET_FIELD(src_y
, BLT_Y
) | SET_FIELD(src_x
, BLT_X
));
420 OUT_BATCH((uint16_t)src_pitch
);
422 OUT_RELOC64(src_buffer
,
423 I915_GEM_DOMAIN_RENDER
, 0,
426 OUT_RELOC(src_buffer
,
427 I915_GEM_DOMAIN_RENDER
, 0,
431 ADVANCE_BATCH_TILED(dst_y_tiled
, src_y_tiled
);
433 intel_batchbuffer_emit_mi_flush(brw
);
439 intelEmitImmediateColorExpandBlit(struct brw_context
*brw
,
441 GLubyte
*src_bits
, GLuint src_size
,
444 drm_intel_bo
*dst_buffer
,
447 GLshort x
, GLshort y
,
448 GLshort w
, GLshort h
,
451 int dwords
= ALIGN(src_size
, 8) / 4;
452 uint32_t opcode
, br13
, blit_cmd
;
454 if (dst_tiling
!= I915_TILING_NONE
) {
455 if (dst_offset
& 4095)
457 if (dst_tiling
== I915_TILING_Y
)
461 assert((logic_op
>= GL_CLEAR
) && (logic_op
<= (GL_CLEAR
+ 0x0f)));
462 assert(dst_pitch
> 0);
467 DBG("%s dst:buf(%p)/%d+%d %d,%d sz:%dx%d, %d bytes %d dwords\n",
469 dst_buffer
, dst_pitch
, dst_offset
, x
, y
, w
, h
, src_size
, dwords
);
471 intel_batchbuffer_require_space(brw
, (8 * 4) + (3 * 4) + dwords
* 4, BLT_RING
);
473 opcode
= XY_SETUP_BLT_CMD
;
475 opcode
|= XY_BLT_WRITE_ALPHA
| XY_BLT_WRITE_RGB
;
476 if (dst_tiling
!= I915_TILING_NONE
) {
477 opcode
|= XY_DST_TILED
;
481 br13
= dst_pitch
| (translate_raster_op(logic_op
) << 16) | (1 << 29);
482 br13
|= br13_for_cpp(cpp
);
484 blit_cmd
= XY_TEXT_IMMEDIATE_BLIT_CMD
| XY_TEXT_BYTE_PACKED
; /* packing? */
485 if (dst_tiling
!= I915_TILING_NONE
)
486 blit_cmd
|= XY_DST_TILED
;
488 unsigned xy_setup_blt_length
= brw
->gen
>= 8 ? 10 : 8;
490 BEGIN_BATCH_BLT(xy_setup_blt_length
+ 3);
491 OUT_BATCH(opcode
| (xy_setup_blt_length
- 2));
493 OUT_BATCH((0 << 16) | 0); /* clip x1, y1 */
494 OUT_BATCH((100 << 16) | 100); /* clip x2, y2 */
496 OUT_RELOC64(dst_buffer
,
497 I915_GEM_DOMAIN_RENDER
, I915_GEM_DOMAIN_RENDER
,
500 OUT_RELOC(dst_buffer
,
501 I915_GEM_DOMAIN_RENDER
, I915_GEM_DOMAIN_RENDER
,
504 OUT_BATCH(0); /* bg */
505 OUT_BATCH(fg_color
); /* fg */
506 OUT_BATCH(0); /* pattern base addr */
510 OUT_BATCH(blit_cmd
| ((3 - 2) + dwords
));
511 OUT_BATCH(SET_FIELD(y
, BLT_Y
) | SET_FIELD(x
, BLT_X
));
512 OUT_BATCH(SET_FIELD(y
+ h
, BLT_Y
) | SET_FIELD(x
+ w
, BLT_X
));
515 intel_batchbuffer_data(brw
, src_bits
, dwords
* 4, BLT_RING
);
517 intel_batchbuffer_emit_mi_flush(brw
);
522 /* We don't have a memmove-type blit like some other hardware, so we'll do a
523 * rectangular blit covering a large space, then emit 1-scanline blit at the
524 * end to cover the last if we need.
527 intel_emit_linear_blit(struct brw_context
*brw
,
528 drm_intel_bo
*dst_bo
,
529 unsigned int dst_offset
,
530 drm_intel_bo
*src_bo
,
531 unsigned int src_offset
,
534 struct gl_context
*ctx
= &brw
->ctx
;
535 GLuint pitch
, height
;
538 /* The pitch given to the GPU must be DWORD aligned, and
539 * we want width to match pitch. Max width is (1 << 15 - 1),
540 * rounding that down to the nearest DWORD is 1 << 15 - 4
542 pitch
= ROUND_DOWN_TO(MIN2(size
, (1 << 15) - 1), 4);
543 height
= (pitch
== 0) ? 1 : size
/ pitch
;
544 ok
= intelEmitCopyBlit(brw
, 1,
545 pitch
, src_bo
, src_offset
, I915_TILING_NONE
,
546 pitch
, dst_bo
, dst_offset
, I915_TILING_NONE
,
549 pitch
, height
, /* w, h */
552 _mesa_problem(ctx
, "Failed to linear blit %dx%d\n", pitch
, height
);
554 src_offset
+= pitch
* height
;
555 dst_offset
+= pitch
* height
;
556 size
-= pitch
* height
;
557 assert (size
< (1 << 15));
558 pitch
= ALIGN(size
, 4);
560 ok
= intelEmitCopyBlit(brw
, 1,
561 pitch
, src_bo
, src_offset
, I915_TILING_NONE
,
562 pitch
, dst_bo
, dst_offset
, I915_TILING_NONE
,
568 _mesa_problem(ctx
, "Failed to linear blit %dx%d\n", size
, 1);
573 * Used to initialize the alpha value of an ARGB8888 miptree after copying
574 * into it from an XRGB8888 source.
576 * This is very common with glCopyTexImage2D(). Note that the coordinates are
577 * relative to the start of the miptree, not relative to a slice within the
581 intel_miptree_set_alpha_to_one(struct brw_context
*brw
,
582 struct intel_mipmap_tree
*mt
,
583 int x
, int y
, int width
, int height
)
587 drm_intel_bo
*aper_array
[2];
592 DBG("%s dst:buf(%p)/%d %d,%d sz:%dx%d\n",
593 __FUNCTION__
, mt
->bo
, pitch
, x
, y
, width
, height
);
595 BR13
= br13_for_cpp(cpp
) | 0xf0 << 16;
596 CMD
= XY_COLOR_BLT_CMD
;
597 CMD
|= XY_BLT_WRITE_ALPHA
;
599 if (mt
->tiling
!= I915_TILING_NONE
) {
605 /* do space check before going any further */
606 aper_array
[0] = brw
->batch
.bo
;
607 aper_array
[1] = mt
->bo
;
609 if (drm_intel_bufmgr_check_aperture_space(aper_array
,
610 ARRAY_SIZE(aper_array
)) != 0) {
611 intel_batchbuffer_flush(brw
);
614 unsigned length
= brw
->gen
>= 8 ? 7 : 6;
615 bool dst_y_tiled
= mt
->tiling
== I915_TILING_Y
;
617 BEGIN_BATCH_BLT_TILED(length
, dst_y_tiled
, false);
618 OUT_BATCH(CMD
| (length
- 2));
620 OUT_BATCH(SET_FIELD(y
, BLT_Y
) | SET_FIELD(x
, BLT_X
));
621 OUT_BATCH(SET_FIELD(y
+ height
, BLT_Y
) | SET_FIELD(x
+ width
, BLT_X
));
624 I915_GEM_DOMAIN_RENDER
, I915_GEM_DOMAIN_RENDER
,
628 I915_GEM_DOMAIN_RENDER
, I915_GEM_DOMAIN_RENDER
,
631 OUT_BATCH(0xffffffff); /* white, but only alpha gets written */
632 ADVANCE_BATCH_TILED(dst_y_tiled
, false);
634 intel_batchbuffer_emit_mi_flush(brw
);