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 #include "main/enums.h"
30 #include "main/imports.h"
31 #include "main/macros.h"
32 #include "main/mtypes.h"
33 #include "main/fbobject.h"
34 #include "main/framebuffer.h"
35 #include "main/renderbuffer.h"
36 #include "main/context.h"
37 #include "main/teximage.h"
38 #include "main/image.h"
40 #include "swrast/swrast.h"
41 #include "drivers/common/meta.h"
43 #include "intel_context.h"
44 #include "intel_batchbuffer.h"
45 #include "intel_buffers.h"
46 #include "intel_blit.h"
47 #include "intel_fbo.h"
48 #include "intel_mipmap_tree.h"
49 #include "intel_regions.h"
50 #include "intel_tex.h"
51 #include "intel_span.h"
53 #include "brw_context.h"
56 #define FILE_DEBUG_FLAG DEBUG_FBO
58 static struct gl_renderbuffer
*
59 intel_new_renderbuffer(struct gl_context
* ctx
, GLuint name
);
62 intel_get_rb_region(struct gl_framebuffer
*fb
, GLuint attIndex
)
64 struct intel_renderbuffer
*irb
= intel_get_renderbuffer(fb
, attIndex
);
66 if (attIndex
== BUFFER_STENCIL
&& irb
->mt
->stencil_mt
)
67 return irb
->mt
->stencil_mt
->region
;
69 return irb
->mt
->region
;
75 * Create a new framebuffer object.
77 static struct gl_framebuffer
*
78 intel_new_framebuffer(struct gl_context
* ctx
, GLuint name
)
80 /* Only drawable state in intel_framebuffer at this time, just use Mesa's
83 return _mesa_new_framebuffer(ctx
, name
);
87 /** Called by gl_renderbuffer::Delete() */
89 intel_delete_renderbuffer(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
)
91 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
95 intel_miptree_release(&irb
->mt
);
97 _mesa_delete_renderbuffer(ctx
, rb
);
101 * \see dd_function_table::MapRenderbuffer
104 intel_map_renderbuffer(struct gl_context
*ctx
,
105 struct gl_renderbuffer
*rb
,
106 GLuint x
, GLuint y
, GLuint w
, GLuint h
,
111 struct intel_context
*intel
= intel_context(ctx
);
112 struct swrast_renderbuffer
*srb
= (struct swrast_renderbuffer
*)rb
;
113 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
118 /* this is a malloc'd renderbuffer (accum buffer), not an irb */
119 GLint bpp
= _mesa_get_format_bytes(rb
->Format
);
120 GLint rowStride
= srb
->RowStride
;
121 *out_map
= (GLubyte
*) srb
->Buffer
+ y
* rowStride
+ x
* bpp
;
122 *out_stride
= rowStride
;
126 intel_prepare_render(intel
);
128 /* For a window-system renderbuffer, we need to flip the mapping we receive
129 * upside-down. So we need to ask for a rectangle on flipped vertically, and
130 * we then return a pointer to the bottom of it with a negative stride.
133 y
= rb
->Height
- y
- h
;
136 intel_miptree_map(intel
, irb
->mt
, irb
->mt_level
, irb
->mt_layer
,
137 x
, y
, w
, h
, mode
, &map
, &stride
);
140 map
+= (h
- 1) * stride
;
144 DBG("%s: rb %d (%s) mt mapped: (%d, %d) (%dx%d) -> %p/%d\n",
145 __FUNCTION__
, rb
->Name
, _mesa_get_format_name(rb
->Format
),
146 x
, y
, w
, h
, map
, stride
);
149 *out_stride
= stride
;
153 * \see dd_function_table::UnmapRenderbuffer
156 intel_unmap_renderbuffer(struct gl_context
*ctx
,
157 struct gl_renderbuffer
*rb
)
159 struct intel_context
*intel
= intel_context(ctx
);
160 struct swrast_renderbuffer
*srb
= (struct swrast_renderbuffer
*)rb
;
161 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
163 DBG("%s: rb %d (%s)\n", __FUNCTION__
,
164 rb
->Name
, _mesa_get_format_name(rb
->Format
));
167 /* this is a malloc'd renderbuffer (accum buffer) */
172 intel_miptree_unmap(intel
, irb
->mt
, irb
->mt_level
, irb
->mt_layer
);
177 * Round up the requested multisample count to the next supported sample size.
180 intel_quantize_num_samples(struct intel_screen
*intel
, unsigned num_samples
)
182 switch (intel
->gen
) {
184 /* Gen6 supports only 4x multisampling. */
190 /* Gen7 supports 4x and 8x multisampling. */
193 else if (num_samples
> 0)
199 /* MSAA unsupported. */
206 * Called via glRenderbufferStorageEXT() to set the format and allocate
207 * storage for a user-created renderbuffer.
210 intel_alloc_renderbuffer_storage(struct gl_context
* ctx
, struct gl_renderbuffer
*rb
,
211 GLenum internalFormat
,
212 GLuint width
, GLuint height
)
214 struct intel_context
*intel
= intel_context(ctx
);
215 struct intel_screen
*screen
= intel
->intelScreen
;
216 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
217 rb
->NumSamples
= intel_quantize_num_samples(screen
, rb
->NumSamples
);
219 switch (internalFormat
) {
221 /* Use the same format-choice logic as for textures.
222 * Renderbuffers aren't any different from textures for us,
223 * except they're less useful because you can't texture with
226 rb
->Format
= intel
->ctx
.Driver
.ChooseTextureFormat(ctx
, GL_TEXTURE_2D
,
230 case GL_STENCIL_INDEX
:
231 case GL_STENCIL_INDEX1_EXT
:
232 case GL_STENCIL_INDEX4_EXT
:
233 case GL_STENCIL_INDEX8_EXT
:
234 case GL_STENCIL_INDEX16_EXT
:
235 /* These aren't actual texture formats, so force them here. */
236 if (intel
->has_separate_stencil
) {
237 rb
->Format
= MESA_FORMAT_S8
;
239 assert(!intel
->must_use_separate_stencil
);
240 rb
->Format
= MESA_FORMAT_S8_Z24
;
247 rb
->_BaseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
249 intel_miptree_release(&irb
->mt
);
251 DBG("%s: %s: %s (%dx%d)\n", __FUNCTION__
,
252 _mesa_lookup_enum_by_nr(internalFormat
),
253 _mesa_get_format_name(rb
->Format
), width
, height
);
255 if (width
== 0 || height
== 0)
258 irb
->mt
= intel_miptree_create_for_renderbuffer(intel
, rb
->Format
,
269 intel_image_target_renderbuffer_storage(struct gl_context
*ctx
,
270 struct gl_renderbuffer
*rb
,
273 struct intel_context
*intel
= intel_context(ctx
);
274 struct intel_renderbuffer
*irb
;
278 screen
= intel
->intelScreen
->driScrnPriv
;
279 image
= screen
->dri2
.image
->lookupEGLImage(screen
, image_handle
,
280 screen
->loaderPrivate
);
284 /* __DRIimage is opaque to the core so it has to be checked here */
285 switch (image
->format
) {
286 case MESA_FORMAT_RGBA8888_REV
:
287 _mesa_error(&intel
->ctx
, GL_INVALID_OPERATION
,
288 "glEGLImageTargetRenderbufferStorage(unsupported image format");
295 irb
= intel_renderbuffer(rb
);
296 intel_miptree_release(&irb
->mt
);
297 irb
->mt
= intel_miptree_create_for_region(intel
,
304 rb
->InternalFormat
= image
->internal_format
;
305 rb
->Width
= image
->region
->width
;
306 rb
->Height
= image
->region
->height
;
307 rb
->Format
= image
->format
;
308 rb
->_BaseFormat
= _mesa_base_fbo_format(&intel
->ctx
,
309 image
->internal_format
);
313 * Called for each hardware renderbuffer when a _window_ is resized.
314 * Just update fields.
315 * Not used for user-created renderbuffers!
318 intel_alloc_window_storage(struct gl_context
* ctx
, struct gl_renderbuffer
*rb
,
319 GLenum internalFormat
, GLuint width
, GLuint height
)
321 ASSERT(rb
->Name
== 0);
324 rb
->InternalFormat
= internalFormat
;
331 intel_resize_buffers(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
332 GLuint width
, GLuint height
)
336 _mesa_resize_framebuffer(ctx
, fb
, width
, height
);
338 fb
->Initialized
= true; /* XXX remove someday */
340 if (_mesa_is_user_fbo(fb
)) {
345 /* Make sure all window system renderbuffers are up to date */
346 for (i
= BUFFER_FRONT_LEFT
; i
<= BUFFER_BACK_RIGHT
; i
++) {
347 struct gl_renderbuffer
*rb
= fb
->Attachment
[i
].Renderbuffer
;
349 /* only resize if size is changing */
350 if (rb
&& (rb
->Width
!= width
|| rb
->Height
!= height
)) {
351 rb
->AllocStorage(ctx
, rb
, rb
->InternalFormat
, width
, height
);
357 /** Dummy function for gl_renderbuffer::AllocStorage() */
359 intel_nop_alloc_storage(struct gl_context
* ctx
, struct gl_renderbuffer
*rb
,
360 GLenum internalFormat
, GLuint width
, GLuint height
)
362 _mesa_problem(ctx
, "intel_op_alloc_storage should never be called.");
367 * Create a new intel_renderbuffer which corresponds to an on-screen window,
368 * not a user-created renderbuffer.
370 * \param num_samples must be quantized.
372 struct intel_renderbuffer
*
373 intel_create_renderbuffer(gl_format format
, unsigned num_samples
)
375 struct intel_renderbuffer
*irb
;
376 struct gl_renderbuffer
*rb
;
378 GET_CURRENT_CONTEXT(ctx
);
380 irb
= CALLOC_STRUCT(intel_renderbuffer
);
382 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "creating renderbuffer");
386 rb
= &irb
->Base
.Base
;
388 _mesa_init_renderbuffer(rb
, 0);
389 rb
->ClassID
= INTEL_RB_CLASS
;
390 rb
->_BaseFormat
= _mesa_get_format_base_format(format
);
392 rb
->InternalFormat
= rb
->_BaseFormat
;
393 rb
->NumSamples
= num_samples
;
395 /* intel-specific methods */
396 rb
->Delete
= intel_delete_renderbuffer
;
397 rb
->AllocStorage
= intel_alloc_window_storage
;
403 * Private window-system buffers (as opposed to ones shared with the display
404 * server created with intel_create_renderbuffer()) are most similar in their
405 * handling to user-created renderbuffers, but they have a resize handler that
406 * may be called at intel_update_renderbuffers() time.
408 * \param num_samples must be quantized.
410 struct intel_renderbuffer
*
411 intel_create_private_renderbuffer(gl_format format
, unsigned num_samples
)
413 struct intel_renderbuffer
*irb
;
415 irb
= intel_create_renderbuffer(format
, num_samples
);
416 irb
->Base
.Base
.AllocStorage
= intel_alloc_renderbuffer_storage
;
422 * Create a new renderbuffer object.
423 * Typically called via glBindRenderbufferEXT().
425 static struct gl_renderbuffer
*
426 intel_new_renderbuffer(struct gl_context
* ctx
, GLuint name
)
428 /*struct intel_context *intel = intel_context(ctx); */
429 struct intel_renderbuffer
*irb
;
430 struct gl_renderbuffer
*rb
;
432 irb
= CALLOC_STRUCT(intel_renderbuffer
);
434 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "creating renderbuffer");
438 rb
= &irb
->Base
.Base
;
440 _mesa_init_renderbuffer(rb
, name
);
441 rb
->ClassID
= INTEL_RB_CLASS
;
443 /* intel-specific methods */
444 rb
->Delete
= intel_delete_renderbuffer
;
445 rb
->AllocStorage
= intel_alloc_renderbuffer_storage
;
446 /* span routines set in alloc_storage function */
453 * Called via glBindFramebufferEXT().
456 intel_bind_framebuffer(struct gl_context
* ctx
, GLenum target
,
457 struct gl_framebuffer
*fb
, struct gl_framebuffer
*fbread
)
459 if (target
== GL_FRAMEBUFFER_EXT
|| target
== GL_DRAW_FRAMEBUFFER_EXT
) {
460 intel_draw_buffer(ctx
);
463 /* don't need to do anything if target == GL_READ_FRAMEBUFFER_EXT */
469 * Called via glFramebufferRenderbufferEXT().
472 intel_framebuffer_renderbuffer(struct gl_context
* ctx
,
473 struct gl_framebuffer
*fb
,
474 GLenum attachment
, struct gl_renderbuffer
*rb
)
476 DBG("Intel FramebufferRenderbuffer %u %u\n", fb
->Name
, rb
? rb
->Name
: 0);
478 _mesa_framebuffer_renderbuffer(ctx
, fb
, attachment
, rb
);
479 intel_draw_buffer(ctx
);
483 intel_renderbuffer_update_wrapper(struct intel_context
*intel
,
484 struct intel_renderbuffer
*irb
,
485 struct gl_texture_image
*image
,
488 struct gl_renderbuffer
*rb
= &irb
->Base
.Base
;
489 struct intel_texture_image
*intel_image
= intel_texture_image(image
);
490 struct intel_mipmap_tree
*mt
= intel_image
->mt
;
491 int level
= image
->Level
;
493 rb
->Format
= image
->TexFormat
;
494 rb
->InternalFormat
= image
->InternalFormat
;
495 rb
->_BaseFormat
= image
->_BaseFormat
;
496 rb
->NumSamples
= mt
->num_samples
;
498 if (mt
->msaa_layout
!= INTEL_MSAA_LAYOUT_NONE
) {
500 rb
->Width
= mt
->logical_width0
;
501 rb
->Height
= mt
->logical_height0
;
504 rb
->Width
= mt
->level
[level
].width
;
505 rb
->Height
= mt
->level
[level
].height
;
508 rb
->Delete
= intel_delete_renderbuffer
;
509 rb
->AllocStorage
= intel_nop_alloc_storage
;
511 intel_miptree_check_level_layer(mt
, level
, layer
);
512 irb
->mt_level
= level
;
514 switch (mt
->msaa_layout
) {
515 case INTEL_MSAA_LAYOUT_UMS
:
516 case INTEL_MSAA_LAYOUT_CMS
:
517 irb
->mt_layer
= layer
* mt
->num_samples
;
521 irb
->mt_layer
= layer
;
524 intel_miptree_reference(&irb
->mt
, mt
);
526 intel_renderbuffer_set_draw_offset(irb
);
528 if (mt
->hiz_mt
== NULL
&&
529 intel
->vtbl
.is_hiz_depth_format(intel
, rb
->Format
)) {
530 intel_miptree_alloc_hiz(intel
, mt
, 0 /* num_samples */);
539 * Create a fake intel_renderbuffer that wraps a gl_texture_image.
541 struct intel_renderbuffer
*
542 intel_create_fake_renderbuffer_wrapper(struct intel_context
*intel
,
543 struct gl_texture_image
*image
)
545 struct gl_context
*ctx
= &intel
->ctx
;
546 struct intel_renderbuffer
*irb
;
547 struct gl_renderbuffer
*rb
;
549 irb
= CALLOC_STRUCT(intel_renderbuffer
);
551 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "creating renderbuffer");
555 rb
= &irb
->Base
.Base
;
557 _mesa_init_renderbuffer(rb
, 0);
558 rb
->ClassID
= INTEL_RB_CLASS
;
560 if (!intel_renderbuffer_update_wrapper(intel
, irb
, image
, image
->Face
)) {
561 intel_delete_renderbuffer(ctx
, rb
);
569 intel_renderbuffer_set_draw_offset(struct intel_renderbuffer
*irb
)
571 unsigned int dst_x
, dst_y
;
573 /* compute offset of the particular 2D image within the texture region */
574 intel_miptree_get_image_offset(irb
->mt
,
584 * Rendering to tiled buffers requires that the base address of the
585 * buffer be aligned to a page boundary. We generally render to
586 * textures by pointing the surface at the mipmap image level, which
587 * may not be aligned to a tile boundary.
589 * This function returns an appropriately-aligned base offset
590 * according to the tiling restrictions, plus any required x/y offset
594 intel_renderbuffer_tile_offsets(struct intel_renderbuffer
*irb
,
598 struct intel_region
*region
= irb
->mt
->region
;
599 uint32_t mask_x
, mask_y
;
601 intel_region_get_tile_masks(region
, &mask_x
, &mask_y
, false);
603 *tile_x
= irb
->draw_x
& mask_x
;
604 *tile_y
= irb
->draw_y
& mask_y
;
605 return intel_region_get_aligned_offset(region
, irb
->draw_x
& ~mask_x
,
606 irb
->draw_y
& ~mask_y
, false);
610 * Called by glFramebufferTexture[123]DEXT() (and other places) to
611 * prepare for rendering into texture memory. This might be called
612 * many times to choose different texture levels, cube faces, etc
613 * before intel_finish_render_texture() is ever called.
616 intel_render_texture(struct gl_context
* ctx
,
617 struct gl_framebuffer
*fb
,
618 struct gl_renderbuffer_attachment
*att
)
620 struct intel_context
*intel
= intel_context(ctx
);
621 struct gl_texture_image
*image
= _mesa_get_attachment_teximage(att
);
622 struct intel_renderbuffer
*irb
= intel_renderbuffer(att
->Renderbuffer
);
623 struct intel_texture_image
*intel_image
= intel_texture_image(image
);
624 struct intel_mipmap_tree
*mt
= intel_image
->mt
;
629 if (att
->CubeMapFace
> 0) {
630 assert(att
->Zoffset
== 0);
631 layer
= att
->CubeMapFace
;
633 layer
= att
->Zoffset
;
636 if (!intel_image
->mt
) {
637 /* Fallback on drawing to a texture that doesn't have a miptree
638 * (has a border, width/height 0, etc.)
640 _mesa_reference_renderbuffer(&att
->Renderbuffer
, NULL
);
641 _swrast_render_texture(ctx
, fb
, att
);
645 intel_miptree_check_level_layer(mt
, att
->TextureLevel
, layer
);
647 irb
= (struct intel_renderbuffer
*)intel_new_renderbuffer(ctx
, ~0);
650 /* bind the wrapper to the attachment point */
651 _mesa_reference_renderbuffer(&att
->Renderbuffer
, &irb
->Base
.Base
);
654 /* fallback to software rendering */
655 _swrast_render_texture(ctx
, fb
, att
);
660 if (!intel_renderbuffer_update_wrapper(intel
, irb
, image
, layer
)) {
661 _mesa_reference_renderbuffer(&att
->Renderbuffer
, NULL
);
662 _swrast_render_texture(ctx
, fb
, att
);
666 irb
->tex_image
= image
;
668 DBG("Begin render %s texture tex=%u w=%d h=%d refcount=%d\n",
669 _mesa_get_format_name(image
->TexFormat
),
670 att
->Texture
->Name
, image
->Width
, image
->Height
,
671 irb
->Base
.Base
.RefCount
);
673 /* update drawing region, etc */
674 intel_draw_buffer(ctx
);
679 * Called by Mesa when rendering to a texture is done.
682 intel_finish_render_texture(struct gl_context
* ctx
,
683 struct gl_renderbuffer_attachment
*att
)
685 struct intel_context
*intel
= intel_context(ctx
);
686 struct gl_texture_object
*tex_obj
= att
->Texture
;
687 struct gl_texture_image
*image
=
688 tex_obj
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
689 struct intel_renderbuffer
*irb
= intel_renderbuffer(att
->Renderbuffer
);
691 DBG("Finish render %s texture tex=%u\n",
692 _mesa_get_format_name(image
->TexFormat
), att
->Texture
->Name
);
695 irb
->tex_image
= NULL
;
697 /* Since we've (probably) rendered to the texture and will (likely) use
698 * it in the texture domain later on in this batchbuffer, flush the
699 * batch. Once again, we wish for a domain tracker in libdrm to cover
700 * usage inside of a batchbuffer like GEM does in the kernel.
702 intel_batchbuffer_emit_mi_flush(intel
);
705 #define fbo_incomplete(fb, ...) do { \
706 static GLuint msg_id = 0; \
707 if (unlikely(ctx->Const.ContextFlags & GL_CONTEXT_FLAG_DEBUG_BIT)) { \
708 _mesa_gl_debug(ctx, &msg_id, \
709 MESA_DEBUG_TYPE_OTHER, \
710 MESA_DEBUG_SEVERITY_MEDIUM, \
714 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED; \
718 * Do additional "completeness" testing of a framebuffer object.
721 intel_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
723 struct intel_context
*intel
= intel_context(ctx
);
724 struct intel_renderbuffer
*depthRb
=
725 intel_get_renderbuffer(fb
, BUFFER_DEPTH
);
726 struct intel_renderbuffer
*stencilRb
=
727 intel_get_renderbuffer(fb
, BUFFER_STENCIL
);
728 struct intel_mipmap_tree
*depth_mt
= NULL
, *stencil_mt
= NULL
;
731 DBG("%s() on fb %p (%s)\n", __FUNCTION__
,
732 fb
, (fb
== ctx
->DrawBuffer
? "drawbuffer" :
733 (fb
== ctx
->ReadBuffer
? "readbuffer" : "other buffer")));
736 depth_mt
= depthRb
->mt
;
738 stencil_mt
= stencilRb
->mt
;
739 if (stencil_mt
->stencil_mt
)
740 stencil_mt
= stencil_mt
->stencil_mt
;
743 if (depth_mt
&& stencil_mt
) {
744 if (depth_mt
== stencil_mt
) {
745 /* For true packed depth/stencil (not faked on prefers-separate-stencil
746 * hardware) we need to be sure they're the same level/layer, since
747 * we'll be emitting a single packet describing the packed setup.
749 if (depthRb
->mt_level
!= stencilRb
->mt_level
||
750 depthRb
->mt_layer
!= stencilRb
->mt_layer
) {
752 "FBO incomplete: depth image level/layer %d/%d != "
753 "stencil image %d/%d\n",
757 stencilRb
->mt_layer
);
760 if (!intel
->has_separate_stencil
) {
761 fbo_incomplete(fb
, "FBO incomplete: separate stencil "
764 if (stencil_mt
->format
!= MESA_FORMAT_S8
) {
765 fbo_incomplete(fb
, "FBO incomplete: separate stencil is %s "
767 _mesa_get_format_name(stencil_mt
->format
));
769 if (intel
->gen
< 7 && !intel_renderbuffer_has_hiz(depthRb
)) {
770 /* Before Gen7, separate depth and stencil buffers can be used
771 * only if HiZ is enabled. From the Sandybridge PRM, Volume 2,
772 * Part 1, Bit 3DSTATE_DEPTH_BUFFER.SeparateStencilBufferEnable:
773 * [DevSNB]: This field must be set to the same value (enabled
774 * or disabled) as Hierarchical Depth Buffer Enable.
776 fbo_incomplete(fb
, "FBO incomplete: separate stencil "
782 for (i
= 0; i
< Elements(fb
->Attachment
); i
++) {
783 struct gl_renderbuffer
*rb
;
784 struct intel_renderbuffer
*irb
;
786 if (fb
->Attachment
[i
].Type
== GL_NONE
)
789 /* A supported attachment will have a Renderbuffer set either
790 * from being a Renderbuffer or being a texture that got the
791 * intel_wrap_texture() treatment.
793 rb
= fb
->Attachment
[i
].Renderbuffer
;
795 fbo_incomplete(fb
, "FBO incomplete: attachment without "
800 if (fb
->Attachment
[i
].Type
== GL_TEXTURE
) {
801 const struct gl_texture_image
*img
=
802 _mesa_get_attachment_teximage_const(&fb
->Attachment
[i
]);
805 fbo_incomplete(fb
, "FBO incomplete: texture with border\n");
810 irb
= intel_renderbuffer(rb
);
812 fbo_incomplete(fb
, "FBO incomplete: software rendering "
817 if (!intel
->vtbl
.render_target_supported(intel
, rb
)) {
818 fbo_incomplete(fb
, "FBO incomplete: Unsupported HW "
819 "texture/renderbuffer format attached: %s\n",
820 _mesa_get_format_name(intel_rb_format(irb
)));
826 * Try to do a glBlitFramebuffer using glCopyTexSubImage2D
827 * We can do this when the dst renderbuffer is actually a texture and
828 * there is no scaling, mirroring or scissoring.
830 * \return new buffer mask indicating the buffers left to blit using the
834 intel_blit_framebuffer_copy_tex_sub_image(struct gl_context
*ctx
,
835 GLint srcX0
, GLint srcY0
,
836 GLint srcX1
, GLint srcY1
,
837 GLint dstX0
, GLint dstY0
,
838 GLint dstX1
, GLint dstY1
,
839 GLbitfield mask
, GLenum filter
)
841 if (mask
& GL_COLOR_BUFFER_BIT
) {
843 const struct gl_framebuffer
*drawFb
= ctx
->DrawBuffer
;
844 const struct gl_framebuffer
*readFb
= ctx
->ReadBuffer
;
845 const struct gl_renderbuffer_attachment
*drawAtt
;
846 struct intel_renderbuffer
*srcRb
=
847 intel_renderbuffer(readFb
->_ColorReadBuffer
);
849 /* If the source and destination are the same size with no mirroring,
850 * the rectangles are within the size of the texture and there is no
851 * scissor then we can use glCopyTexSubimage2D to implement the blit.
852 * This will end up as a fast hardware blit on some drivers.
854 const GLboolean use_intel_copy_texsubimage
=
855 srcX0
- srcX1
== dstX0
- dstX1
&&
856 srcY0
- srcY1
== dstY0
- dstY1
&&
859 srcX0
>= 0 && srcX1
<= readFb
->Width
&&
860 srcY0
>= 0 && srcY1
<= readFb
->Height
&&
861 dstX0
>= 0 && dstX1
<= drawFb
->Width
&&
862 dstY0
>= 0 && dstY1
<= drawFb
->Height
&&
863 !ctx
->Scissor
.Enabled
;
865 /* Verify that all the draw buffers can be blitted using
866 * intel_copy_texsubimage().
868 for (i
= 0; i
< ctx
->DrawBuffer
->_NumColorDrawBuffers
; i
++) {
869 int idx
= ctx
->DrawBuffer
->_ColorDrawBufferIndexes
[i
];
872 drawAtt
= &drawFb
->Attachment
[idx
];
874 if (srcRb
&& drawAtt
&& drawAtt
->Texture
&&
875 use_intel_copy_texsubimage
)
881 /* Blit to all active draw buffers */
882 for (i
= 0; i
< ctx
->DrawBuffer
->_NumColorDrawBuffers
; i
++) {
883 int idx
= ctx
->DrawBuffer
->_ColorDrawBufferIndexes
[i
];
886 drawAtt
= &drawFb
->Attachment
[idx
];
889 const struct gl_texture_object
*texObj
= drawAtt
->Texture
;
890 const GLuint dstLevel
= drawAtt
->TextureLevel
;
891 const GLenum target
= texObj
->Target
;
893 struct gl_texture_image
*texImage
=
894 _mesa_select_tex_image(ctx
, texObj
, target
, dstLevel
);
896 if (!intel_copy_texsubimage(intel_context(ctx
),
897 intel_texture_image(texImage
),
901 srcX1
- srcX0
, /* width */
907 mask
&= ~GL_COLOR_BUFFER_BIT
;
914 intel_blit_framebuffer(struct gl_context
*ctx
,
915 GLint srcX0
, GLint srcY0
, GLint srcX1
, GLint srcY1
,
916 GLint dstX0
, GLint dstY0
, GLint dstX1
, GLint dstY1
,
917 GLbitfield mask
, GLenum filter
)
919 /* Try faster, glCopyTexSubImage2D approach first which uses the BLT. */
920 mask
= intel_blit_framebuffer_copy_tex_sub_image(ctx
,
921 srcX0
, srcY0
, srcX1
, srcY1
,
922 dstX0
, dstY0
, dstX1
, dstY1
,
928 mask
= brw_blorp_framebuffer(intel_context(ctx
),
929 srcX0
, srcY0
, srcX1
, srcY1
,
930 dstX0
, dstY0
, dstX1
, dstY1
,
936 _mesa_meta_BlitFramebuffer(ctx
,
937 srcX0
, srcY0
, srcX1
, srcY1
,
938 dstX0
, dstY0
, dstX1
, dstY1
,
943 * This is a no-op except on multisample buffers shared with DRI2.
946 intel_renderbuffer_set_needs_downsample(struct intel_renderbuffer
*irb
)
948 if (irb
->mt
&& irb
->mt
->singlesample_mt
)
949 irb
->mt
->need_downsample
= true;
953 * Does the renderbuffer have hiz enabled?
956 intel_renderbuffer_has_hiz(struct intel_renderbuffer
*irb
)
958 return intel_miptree_slice_has_hiz(irb
->mt
, irb
->mt_level
, irb
->mt_layer
);
962 intel_renderbuffer_set_needs_hiz_resolve(struct intel_renderbuffer
*irb
)
965 intel_miptree_slice_set_needs_hiz_resolve(irb
->mt
,
972 intel_renderbuffer_set_needs_depth_resolve(struct intel_renderbuffer
*irb
)
975 intel_miptree_slice_set_needs_depth_resolve(irb
->mt
,
982 intel_renderbuffer_resolve_hiz(struct intel_context
*intel
,
983 struct intel_renderbuffer
*irb
)
986 return intel_miptree_slice_resolve_hiz(intel
,
995 intel_renderbuffer_resolve_depth(struct intel_context
*intel
,
996 struct intel_renderbuffer
*irb
)
999 return intel_miptree_slice_resolve_depth(intel
,
1008 intel_renderbuffer_move_to_temp(struct intel_context
*intel
,
1009 struct intel_renderbuffer
*irb
,
1012 struct intel_texture_image
*intel_image
=
1013 intel_texture_image(irb
->tex_image
);
1014 struct intel_mipmap_tree
*new_mt
;
1015 int width
, height
, depth
;
1017 intel_miptree_get_dimensions_for_image(irb
->tex_image
, &width
, &height
, &depth
);
1019 new_mt
= intel_miptree_create(intel
, irb
->tex_image
->TexObject
->Target
,
1020 intel_image
->base
.Base
.TexFormat
,
1021 intel_image
->base
.Base
.Level
,
1022 intel_image
->base
.Base
.Level
,
1023 width
, height
, depth
,
1025 irb
->mt
->num_samples
,
1026 false /* force_y_tiling */);
1028 if (intel
->vtbl
.is_hiz_depth_format(intel
, new_mt
->format
)) {
1029 intel_miptree_alloc_hiz(intel
, new_mt
, irb
->mt
->num_samples
);
1032 intel_miptree_copy_teximage(intel
, intel_image
, new_mt
, invalidate
);
1034 intel_miptree_reference(&irb
->mt
, intel_image
->mt
);
1035 intel_renderbuffer_set_draw_offset(irb
);
1036 intel_miptree_release(&new_mt
);
1040 * Do one-time context initializations related to GL_EXT_framebuffer_object.
1041 * Hook in device driver functions.
1044 intel_fbo_init(struct intel_context
*intel
)
1046 intel
->ctx
.Driver
.NewFramebuffer
= intel_new_framebuffer
;
1047 intel
->ctx
.Driver
.NewRenderbuffer
= intel_new_renderbuffer
;
1048 intel
->ctx
.Driver
.MapRenderbuffer
= intel_map_renderbuffer
;
1049 intel
->ctx
.Driver
.UnmapRenderbuffer
= intel_unmap_renderbuffer
;
1050 intel
->ctx
.Driver
.BindFramebuffer
= intel_bind_framebuffer
;
1051 intel
->ctx
.Driver
.FramebufferRenderbuffer
= intel_framebuffer_renderbuffer
;
1052 intel
->ctx
.Driver
.RenderTexture
= intel_render_texture
;
1053 intel
->ctx
.Driver
.FinishRenderTexture
= intel_finish_render_texture
;
1054 intel
->ctx
.Driver
.ResizeBuffers
= intel_resize_buffers
;
1055 intel
->ctx
.Driver
.ValidateFramebuffer
= intel_validate_framebuffer
;
1056 intel
->ctx
.Driver
.BlitFramebuffer
= intel_blit_framebuffer
;
1057 intel
->ctx
.Driver
.EGLImageTargetRenderbufferStorage
=
1058 intel_image_target_renderbuffer_storage
;