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"
52 #include "brw_context.h"
55 #define FILE_DEBUG_FLAG DEBUG_FBO
57 static struct gl_renderbuffer
*
58 intel_new_renderbuffer(struct gl_context
* ctx
, GLuint name
);
61 intel_get_rb_region(struct gl_framebuffer
*fb
, GLuint attIndex
)
63 struct intel_renderbuffer
*irb
= intel_get_renderbuffer(fb
, attIndex
);
65 if (attIndex
== BUFFER_STENCIL
&& irb
->mt
->stencil_mt
)
66 return irb
->mt
->stencil_mt
->region
;
68 return irb
->mt
->region
;
74 * Create a new framebuffer object.
76 static struct gl_framebuffer
*
77 intel_new_framebuffer(struct gl_context
* ctx
, GLuint name
)
79 /* Only drawable state in intel_framebuffer at this time, just use Mesa's
82 return _mesa_new_framebuffer(ctx
, name
);
86 /** Called by gl_renderbuffer::Delete() */
88 intel_delete_renderbuffer(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
)
90 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
94 intel_miptree_release(&irb
->mt
);
96 _mesa_delete_renderbuffer(ctx
, rb
);
100 * \see dd_function_table::MapRenderbuffer
103 intel_map_renderbuffer(struct gl_context
*ctx
,
104 struct gl_renderbuffer
*rb
,
105 GLuint x
, GLuint y
, GLuint w
, GLuint h
,
110 struct intel_context
*intel
= intel_context(ctx
);
111 struct swrast_renderbuffer
*srb
= (struct swrast_renderbuffer
*)rb
;
112 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
117 /* this is a malloc'd renderbuffer (accum buffer), not an irb */
118 GLint bpp
= _mesa_get_format_bytes(rb
->Format
);
119 GLint rowStride
= srb
->RowStride
;
120 *out_map
= (GLubyte
*) srb
->Buffer
+ y
* rowStride
+ x
* bpp
;
121 *out_stride
= rowStride
;
125 intel_prepare_render(intel
);
127 /* For a window-system renderbuffer, we need to flip the mapping we receive
128 * upside-down. So we need to ask for a rectangle on flipped vertically, and
129 * we then return a pointer to the bottom of it with a negative stride.
132 y
= rb
->Height
- y
- h
;
135 intel_miptree_map(intel
, irb
->mt
, irb
->mt_level
, irb
->mt_layer
,
136 x
, y
, w
, h
, mode
, &map
, &stride
);
139 map
+= (h
- 1) * stride
;
143 DBG("%s: rb %d (%s) mt mapped: (%d, %d) (%dx%d) -> %p/%d\n",
144 __FUNCTION__
, rb
->Name
, _mesa_get_format_name(rb
->Format
),
145 x
, y
, w
, h
, map
, stride
);
148 *out_stride
= stride
;
152 * \see dd_function_table::UnmapRenderbuffer
155 intel_unmap_renderbuffer(struct gl_context
*ctx
,
156 struct gl_renderbuffer
*rb
)
158 struct intel_context
*intel
= intel_context(ctx
);
159 struct swrast_renderbuffer
*srb
= (struct swrast_renderbuffer
*)rb
;
160 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
162 DBG("%s: rb %d (%s)\n", __FUNCTION__
,
163 rb
->Name
, _mesa_get_format_name(rb
->Format
));
166 /* this is a malloc'd renderbuffer (accum buffer) */
171 intel_miptree_unmap(intel
, irb
->mt
, irb
->mt_level
, irb
->mt_layer
);
176 * Round up the requested multisample count to the next supported sample size.
179 intel_quantize_num_samples(struct intel_screen
*intel
, unsigned num_samples
)
181 switch (intel
->gen
) {
183 /* Gen6 supports only 4x multisampling. */
189 /* Gen7 supports 4x and 8x multisampling. */
192 else if (num_samples
> 0)
198 /* MSAA unsupported. */
205 * Called via glRenderbufferStorageEXT() to set the format and allocate
206 * storage for a user-created renderbuffer.
209 intel_alloc_renderbuffer_storage(struct gl_context
* ctx
, struct gl_renderbuffer
*rb
,
210 GLenum internalFormat
,
211 GLuint width
, GLuint height
)
213 struct intel_context
*intel
= intel_context(ctx
);
214 struct intel_screen
*screen
= intel
->intelScreen
;
215 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
216 rb
->NumSamples
= intel_quantize_num_samples(screen
, rb
->NumSamples
);
218 switch (internalFormat
) {
220 /* Use the same format-choice logic as for textures.
221 * Renderbuffers aren't any different from textures for us,
222 * except they're less useful because you can't texture with
225 rb
->Format
= intel
->ctx
.Driver
.ChooseTextureFormat(ctx
, GL_TEXTURE_2D
,
229 case GL_STENCIL_INDEX
:
230 case GL_STENCIL_INDEX1_EXT
:
231 case GL_STENCIL_INDEX4_EXT
:
232 case GL_STENCIL_INDEX8_EXT
:
233 case GL_STENCIL_INDEX16_EXT
:
234 /* These aren't actual texture formats, so force them here. */
235 if (intel
->has_separate_stencil
) {
236 rb
->Format
= MESA_FORMAT_S8
;
238 assert(!intel
->must_use_separate_stencil
);
239 rb
->Format
= MESA_FORMAT_S8_Z24
;
246 rb
->_BaseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
248 intel_miptree_release(&irb
->mt
);
250 DBG("%s: %s: %s (%dx%d)\n", __FUNCTION__
,
251 _mesa_lookup_enum_by_nr(internalFormat
),
252 _mesa_get_format_name(rb
->Format
), width
, height
);
254 if (width
== 0 || height
== 0)
257 irb
->mt
= intel_miptree_create_for_renderbuffer(intel
, rb
->Format
,
268 intel_image_target_renderbuffer_storage(struct gl_context
*ctx
,
269 struct gl_renderbuffer
*rb
,
272 struct intel_context
*intel
= intel_context(ctx
);
273 struct intel_renderbuffer
*irb
;
277 screen
= intel
->intelScreen
->driScrnPriv
;
278 image
= screen
->dri2
.image
->lookupEGLImage(screen
, image_handle
,
279 screen
->loaderPrivate
);
283 /* __DRIimage is opaque to the core so it has to be checked here */
284 switch (image
->format
) {
285 case MESA_FORMAT_RGBA8888_REV
:
286 _mesa_error(&intel
->ctx
, GL_INVALID_OPERATION
,
287 "glEGLImageTargetRenderbufferStorage(unsupported image format");
294 irb
= intel_renderbuffer(rb
);
295 intel_miptree_release(&irb
->mt
);
296 irb
->mt
= intel_miptree_create_for_region(intel
,
303 rb
->InternalFormat
= image
->internal_format
;
304 rb
->Width
= image
->region
->width
;
305 rb
->Height
= image
->region
->height
;
306 rb
->Format
= image
->format
;
307 rb
->_BaseFormat
= _mesa_base_fbo_format(&intel
->ctx
,
308 image
->internal_format
);
312 * Called for each hardware renderbuffer when a _window_ is resized.
313 * Just update fields.
314 * Not used for user-created renderbuffers!
317 intel_alloc_window_storage(struct gl_context
* ctx
, struct gl_renderbuffer
*rb
,
318 GLenum internalFormat
, GLuint width
, GLuint height
)
320 ASSERT(rb
->Name
== 0);
323 rb
->InternalFormat
= internalFormat
;
330 intel_resize_buffers(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
331 GLuint width
, GLuint height
)
335 _mesa_resize_framebuffer(ctx
, fb
, width
, height
);
337 fb
->Initialized
= true; /* XXX remove someday */
339 if (_mesa_is_user_fbo(fb
)) {
344 /* Make sure all window system renderbuffers are up to date */
345 for (i
= BUFFER_FRONT_LEFT
; i
<= BUFFER_BACK_RIGHT
; i
++) {
346 struct gl_renderbuffer
*rb
= fb
->Attachment
[i
].Renderbuffer
;
348 /* only resize if size is changing */
349 if (rb
&& (rb
->Width
!= width
|| rb
->Height
!= height
)) {
350 rb
->AllocStorage(ctx
, rb
, rb
->InternalFormat
, width
, height
);
356 /** Dummy function for gl_renderbuffer::AllocStorage() */
358 intel_nop_alloc_storage(struct gl_context
* ctx
, struct gl_renderbuffer
*rb
,
359 GLenum internalFormat
, GLuint width
, GLuint height
)
361 _mesa_problem(ctx
, "intel_op_alloc_storage should never be called.");
366 * Create a new intel_renderbuffer which corresponds to an on-screen window,
367 * not a user-created renderbuffer.
369 * \param num_samples must be quantized.
371 struct intel_renderbuffer
*
372 intel_create_renderbuffer(gl_format format
, unsigned num_samples
)
374 struct intel_renderbuffer
*irb
;
375 struct gl_renderbuffer
*rb
;
377 GET_CURRENT_CONTEXT(ctx
);
379 irb
= CALLOC_STRUCT(intel_renderbuffer
);
381 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "creating renderbuffer");
385 rb
= &irb
->Base
.Base
;
387 _mesa_init_renderbuffer(rb
, 0);
388 rb
->ClassID
= INTEL_RB_CLASS
;
389 rb
->_BaseFormat
= _mesa_get_format_base_format(format
);
391 rb
->InternalFormat
= rb
->_BaseFormat
;
392 rb
->NumSamples
= num_samples
;
394 /* intel-specific methods */
395 rb
->Delete
= intel_delete_renderbuffer
;
396 rb
->AllocStorage
= intel_alloc_window_storage
;
402 * Private window-system buffers (as opposed to ones shared with the display
403 * server created with intel_create_renderbuffer()) are most similar in their
404 * handling to user-created renderbuffers, but they have a resize handler that
405 * may be called at intel_update_renderbuffers() time.
407 * \param num_samples must be quantized.
409 struct intel_renderbuffer
*
410 intel_create_private_renderbuffer(gl_format format
, unsigned num_samples
)
412 struct intel_renderbuffer
*irb
;
414 irb
= intel_create_renderbuffer(format
, num_samples
);
415 irb
->Base
.Base
.AllocStorage
= intel_alloc_renderbuffer_storage
;
421 * Create a new renderbuffer object.
422 * Typically called via glBindRenderbufferEXT().
424 static struct gl_renderbuffer
*
425 intel_new_renderbuffer(struct gl_context
* ctx
, GLuint name
)
427 /*struct intel_context *intel = intel_context(ctx); */
428 struct intel_renderbuffer
*irb
;
429 struct gl_renderbuffer
*rb
;
431 irb
= CALLOC_STRUCT(intel_renderbuffer
);
433 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "creating renderbuffer");
437 rb
= &irb
->Base
.Base
;
439 _mesa_init_renderbuffer(rb
, name
);
440 rb
->ClassID
= INTEL_RB_CLASS
;
442 /* intel-specific methods */
443 rb
->Delete
= intel_delete_renderbuffer
;
444 rb
->AllocStorage
= intel_alloc_renderbuffer_storage
;
445 /* span routines set in alloc_storage function */
452 * Called via glBindFramebufferEXT().
455 intel_bind_framebuffer(struct gl_context
* ctx
, GLenum target
,
456 struct gl_framebuffer
*fb
, struct gl_framebuffer
*fbread
)
458 if (target
== GL_FRAMEBUFFER_EXT
|| target
== GL_DRAW_FRAMEBUFFER_EXT
) {
459 intel_draw_buffer(ctx
);
462 /* don't need to do anything if target == GL_READ_FRAMEBUFFER_EXT */
468 * Called via glFramebufferRenderbufferEXT().
471 intel_framebuffer_renderbuffer(struct gl_context
* ctx
,
472 struct gl_framebuffer
*fb
,
473 GLenum attachment
, struct gl_renderbuffer
*rb
)
475 DBG("Intel FramebufferRenderbuffer %u %u\n", fb
->Name
, rb
? rb
->Name
: 0);
477 _mesa_framebuffer_renderbuffer(ctx
, fb
, attachment
, rb
);
478 intel_draw_buffer(ctx
);
482 intel_renderbuffer_update_wrapper(struct intel_context
*intel
,
483 struct intel_renderbuffer
*irb
,
484 struct gl_texture_image
*image
,
487 struct gl_renderbuffer
*rb
= &irb
->Base
.Base
;
488 struct intel_texture_image
*intel_image
= intel_texture_image(image
);
489 struct intel_mipmap_tree
*mt
= intel_image
->mt
;
490 int level
= image
->Level
;
492 rb
->Format
= image
->TexFormat
;
493 rb
->InternalFormat
= image
->InternalFormat
;
494 rb
->_BaseFormat
= image
->_BaseFormat
;
495 rb
->NumSamples
= mt
->num_samples
;
496 rb
->Width
= image
->Width2
;
497 rb
->Height
= image
->Height2
;
498 rb
->Delete
= intel_delete_renderbuffer
;
499 rb
->AllocStorage
= intel_nop_alloc_storage
;
501 intel_miptree_check_level_layer(mt
, level
, layer
);
502 irb
->mt_level
= level
;
504 switch (mt
->msaa_layout
) {
505 case INTEL_MSAA_LAYOUT_UMS
:
506 case INTEL_MSAA_LAYOUT_CMS
:
507 irb
->mt_layer
= layer
* mt
->num_samples
;
511 irb
->mt_layer
= layer
;
514 intel_miptree_reference(&irb
->mt
, mt
);
516 intel_renderbuffer_set_draw_offset(irb
);
518 if (mt
->hiz_mt
== NULL
&&
519 intel
->vtbl
.is_hiz_depth_format(intel
, rb
->Format
)) {
520 intel_miptree_alloc_hiz(intel
, mt
);
529 intel_renderbuffer_set_draw_offset(struct intel_renderbuffer
*irb
)
531 unsigned int dst_x
, dst_y
;
533 /* compute offset of the particular 2D image within the texture region */
534 intel_miptree_get_image_offset(irb
->mt
,
544 * Rendering to tiled buffers requires that the base address of the
545 * buffer be aligned to a page boundary. We generally render to
546 * textures by pointing the surface at the mipmap image level, which
547 * may not be aligned to a tile boundary.
549 * This function returns an appropriately-aligned base offset
550 * according to the tiling restrictions, plus any required x/y offset
554 intel_renderbuffer_tile_offsets(struct intel_renderbuffer
*irb
,
558 struct intel_region
*region
= irb
->mt
->region
;
559 uint32_t mask_x
, mask_y
;
561 intel_region_get_tile_masks(region
, &mask_x
, &mask_y
, false);
563 *tile_x
= irb
->draw_x
& mask_x
;
564 *tile_y
= irb
->draw_y
& mask_y
;
565 return intel_region_get_aligned_offset(region
, irb
->draw_x
& ~mask_x
,
566 irb
->draw_y
& ~mask_y
, false);
570 * Called by glFramebufferTexture[123]DEXT() (and other places) to
571 * prepare for rendering into texture memory. This might be called
572 * many times to choose different texture levels, cube faces, etc
573 * before intel_finish_render_texture() is ever called.
576 intel_render_texture(struct gl_context
* ctx
,
577 struct gl_framebuffer
*fb
,
578 struct gl_renderbuffer_attachment
*att
)
580 struct intel_context
*intel
= intel_context(ctx
);
581 struct gl_texture_image
*image
= _mesa_get_attachment_teximage(att
);
582 struct intel_renderbuffer
*irb
= intel_renderbuffer(att
->Renderbuffer
);
583 struct intel_texture_image
*intel_image
= intel_texture_image(image
);
584 struct intel_mipmap_tree
*mt
= intel_image
->mt
;
589 if (att
->CubeMapFace
> 0) {
590 assert(att
->Zoffset
== 0);
591 layer
= att
->CubeMapFace
;
593 layer
= att
->Zoffset
;
596 if (!intel_image
->mt
) {
597 /* Fallback on drawing to a texture that doesn't have a miptree
598 * (has a border, width/height 0, etc.)
600 _swrast_render_texture(ctx
, fb
, att
);
604 intel_miptree_check_level_layer(mt
, att
->TextureLevel
, layer
);
606 if (!intel_renderbuffer_update_wrapper(intel
, irb
, image
, layer
)) {
607 _swrast_render_texture(ctx
, fb
, att
);
611 irb
->tex_image
= image
;
613 DBG("Begin render %s texture tex=%u w=%d h=%d refcount=%d\n",
614 _mesa_get_format_name(image
->TexFormat
),
615 att
->Texture
->Name
, image
->Width
, image
->Height
,
616 irb
->Base
.Base
.RefCount
);
618 /* update drawing region, etc */
619 intel_draw_buffer(ctx
);
624 * Called by Mesa when rendering to a texture is done.
627 intel_finish_render_texture(struct gl_context
* ctx
,
628 struct gl_renderbuffer_attachment
*att
)
630 struct intel_context
*intel
= intel_context(ctx
);
631 struct gl_texture_object
*tex_obj
= att
->Texture
;
632 struct gl_texture_image
*image
=
633 tex_obj
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
634 struct intel_renderbuffer
*irb
= intel_renderbuffer(att
->Renderbuffer
);
636 DBG("Finish render %s texture tex=%u\n",
637 _mesa_get_format_name(image
->TexFormat
), att
->Texture
->Name
);
640 irb
->tex_image
= NULL
;
642 /* Since we've (probably) rendered to the texture and will (likely) use
643 * it in the texture domain later on in this batchbuffer, flush the
644 * batch. Once again, we wish for a domain tracker in libdrm to cover
645 * usage inside of a batchbuffer like GEM does in the kernel.
647 intel_batchbuffer_emit_mi_flush(intel
);
650 #define fbo_incomplete(fb, ...) do { \
651 static GLuint msg_id = 0; \
652 if (unlikely(ctx->Const.ContextFlags & GL_CONTEXT_FLAG_DEBUG_BIT)) { \
653 _mesa_gl_debug(ctx, &msg_id, \
654 MESA_DEBUG_TYPE_OTHER, \
655 MESA_DEBUG_SEVERITY_MEDIUM, \
659 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED; \
663 * Do additional "completeness" testing of a framebuffer object.
666 intel_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
668 struct intel_context
*intel
= intel_context(ctx
);
669 struct intel_renderbuffer
*depthRb
=
670 intel_get_renderbuffer(fb
, BUFFER_DEPTH
);
671 struct intel_renderbuffer
*stencilRb
=
672 intel_get_renderbuffer(fb
, BUFFER_STENCIL
);
673 struct intel_mipmap_tree
*depth_mt
= NULL
, *stencil_mt
= NULL
;
676 DBG("%s() on fb %p (%s)\n", __FUNCTION__
,
677 fb
, (fb
== ctx
->DrawBuffer
? "drawbuffer" :
678 (fb
== ctx
->ReadBuffer
? "readbuffer" : "other buffer")));
681 depth_mt
= depthRb
->mt
;
683 stencil_mt
= stencilRb
->mt
;
684 if (stencil_mt
->stencil_mt
)
685 stencil_mt
= stencil_mt
->stencil_mt
;
688 if (depth_mt
&& stencil_mt
) {
689 if (depth_mt
== stencil_mt
) {
690 /* For true packed depth/stencil (not faked on prefers-separate-stencil
691 * hardware) we need to be sure they're the same level/layer, since
692 * we'll be emitting a single packet describing the packed setup.
694 if (depthRb
->mt_level
!= stencilRb
->mt_level
||
695 depthRb
->mt_layer
!= stencilRb
->mt_layer
) {
697 "FBO incomplete: depth image level/layer %d/%d != "
698 "stencil image %d/%d\n",
702 stencilRb
->mt_layer
);
705 if (!intel
->has_separate_stencil
) {
706 fbo_incomplete(fb
, "FBO incomplete: separate stencil "
709 if (stencil_mt
->format
!= MESA_FORMAT_S8
) {
710 fbo_incomplete(fb
, "FBO incomplete: separate stencil is %s "
712 _mesa_get_format_name(stencil_mt
->format
));
714 if (intel
->gen
< 7 && !intel_renderbuffer_has_hiz(depthRb
)) {
715 /* Before Gen7, separate depth and stencil buffers can be used
716 * only if HiZ is enabled. From the Sandybridge PRM, Volume 2,
717 * Part 1, Bit 3DSTATE_DEPTH_BUFFER.SeparateStencilBufferEnable:
718 * [DevSNB]: This field must be set to the same value (enabled
719 * or disabled) as Hierarchical Depth Buffer Enable.
721 fbo_incomplete(fb
, "FBO incomplete: separate stencil "
727 for (i
= 0; i
< Elements(fb
->Attachment
); i
++) {
728 struct gl_renderbuffer
*rb
;
729 struct intel_renderbuffer
*irb
;
731 if (fb
->Attachment
[i
].Type
== GL_NONE
)
734 /* A supported attachment will have a Renderbuffer set either
735 * from being a Renderbuffer or being a texture that got the
736 * intel_wrap_texture() treatment.
738 rb
= fb
->Attachment
[i
].Renderbuffer
;
740 fbo_incomplete(fb
, "FBO incomplete: attachment without "
745 if (fb
->Attachment
[i
].Type
== GL_TEXTURE
) {
746 const struct gl_texture_image
*img
=
747 _mesa_get_attachment_teximage_const(&fb
->Attachment
[i
]);
750 fbo_incomplete(fb
, "FBO incomplete: texture with border\n");
755 irb
= intel_renderbuffer(rb
);
757 fbo_incomplete(fb
, "FBO incomplete: software rendering "
762 if (!intel
->vtbl
.render_target_supported(intel
, rb
)) {
763 fbo_incomplete(fb
, "FBO incomplete: Unsupported HW "
764 "texture/renderbuffer format attached: %s\n",
765 _mesa_get_format_name(intel_rb_format(irb
)));
771 * Try to do a glBlitFramebuffer using glCopyTexSubImage2D
772 * We can do this when the dst renderbuffer is actually a texture and
773 * there is no scaling, mirroring or scissoring.
775 * \return new buffer mask indicating the buffers left to blit using the
779 intel_blit_framebuffer_copy_tex_sub_image(struct gl_context
*ctx
,
780 GLint srcX0
, GLint srcY0
,
781 GLint srcX1
, GLint srcY1
,
782 GLint dstX0
, GLint dstY0
,
783 GLint dstX1
, GLint dstY1
,
784 GLbitfield mask
, GLenum filter
)
786 if (mask
& GL_COLOR_BUFFER_BIT
) {
788 const struct gl_framebuffer
*drawFb
= ctx
->DrawBuffer
;
789 const struct gl_framebuffer
*readFb
= ctx
->ReadBuffer
;
790 const struct gl_renderbuffer_attachment
*drawAtt
;
791 struct intel_renderbuffer
*srcRb
=
792 intel_renderbuffer(readFb
->_ColorReadBuffer
);
794 /* If the source and destination are the same size with no mirroring,
795 * the rectangles are within the size of the texture and there is no
796 * scissor then we can use glCopyTexSubimage2D to implement the blit.
797 * This will end up as a fast hardware blit on some drivers.
799 const GLboolean use_intel_copy_texsubimage
=
800 srcX0
- srcX1
== dstX0
- dstX1
&&
801 srcY0
- srcY1
== dstY0
- dstY1
&&
804 srcX0
>= 0 && srcX1
<= readFb
->Width
&&
805 srcY0
>= 0 && srcY1
<= readFb
->Height
&&
806 dstX0
>= 0 && dstX1
<= drawFb
->Width
&&
807 dstY0
>= 0 && dstY1
<= drawFb
->Height
&&
808 !ctx
->Scissor
.Enabled
;
810 /* Verify that all the draw buffers can be blitted using
811 * intel_copy_texsubimage().
813 for (i
= 0; i
< ctx
->DrawBuffer
->_NumColorDrawBuffers
; i
++) {
814 int idx
= ctx
->DrawBuffer
->_ColorDrawBufferIndexes
[i
];
817 drawAtt
= &drawFb
->Attachment
[idx
];
819 if (srcRb
&& drawAtt
&& drawAtt
->Texture
&&
820 use_intel_copy_texsubimage
)
826 /* Blit to all active draw buffers */
827 for (i
= 0; i
< ctx
->DrawBuffer
->_NumColorDrawBuffers
; i
++) {
828 int idx
= ctx
->DrawBuffer
->_ColorDrawBufferIndexes
[i
];
831 drawAtt
= &drawFb
->Attachment
[idx
];
834 const struct gl_texture_object
*texObj
= drawAtt
->Texture
;
835 const GLuint dstLevel
= drawAtt
->TextureLevel
;
836 const GLenum target
= texObj
->Target
;
838 struct gl_texture_image
*texImage
=
839 _mesa_select_tex_image(ctx
, texObj
, target
, dstLevel
);
841 if (!intel_copy_texsubimage(intel_context(ctx
),
842 intel_texture_image(texImage
),
846 srcX1
- srcX0
, /* width */
852 mask
&= ~GL_COLOR_BUFFER_BIT
;
859 intel_blit_framebuffer(struct gl_context
*ctx
,
860 GLint srcX0
, GLint srcY0
, GLint srcX1
, GLint srcY1
,
861 GLint dstX0
, GLint dstY0
, GLint dstX1
, GLint dstY1
,
862 GLbitfield mask
, GLenum filter
)
864 /* Try faster, glCopyTexSubImage2D approach first which uses the BLT. */
865 mask
= intel_blit_framebuffer_copy_tex_sub_image(ctx
,
866 srcX0
, srcY0
, srcX1
, srcY1
,
867 dstX0
, dstY0
, dstX1
, dstY1
,
873 mask
= brw_blorp_framebuffer(intel_context(ctx
),
874 srcX0
, srcY0
, srcX1
, srcY1
,
875 dstX0
, dstY0
, dstX1
, dstY1
,
881 _mesa_meta_BlitFramebuffer(ctx
,
882 srcX0
, srcY0
, srcX1
, srcY1
,
883 dstX0
, dstY0
, dstX1
, dstY1
,
888 * This is a no-op except on multisample buffers shared with DRI2.
891 intel_renderbuffer_set_needs_downsample(struct intel_renderbuffer
*irb
)
893 if (irb
->mt
&& irb
->mt
->singlesample_mt
)
894 irb
->mt
->need_downsample
= true;
898 * Does the renderbuffer have hiz enabled?
901 intel_renderbuffer_has_hiz(struct intel_renderbuffer
*irb
)
903 return intel_miptree_slice_has_hiz(irb
->mt
, irb
->mt_level
, irb
->mt_layer
);
907 intel_renderbuffer_set_needs_hiz_resolve(struct intel_renderbuffer
*irb
)
910 intel_miptree_slice_set_needs_hiz_resolve(irb
->mt
,
917 intel_renderbuffer_set_needs_depth_resolve(struct intel_renderbuffer
*irb
)
920 intel_miptree_slice_set_needs_depth_resolve(irb
->mt
,
927 intel_renderbuffer_resolve_hiz(struct intel_context
*intel
,
928 struct intel_renderbuffer
*irb
)
931 return intel_miptree_slice_resolve_hiz(intel
,
940 intel_renderbuffer_resolve_depth(struct intel_context
*intel
,
941 struct intel_renderbuffer
*irb
)
944 return intel_miptree_slice_resolve_depth(intel
,
953 intel_renderbuffer_move_to_temp(struct intel_context
*intel
,
954 struct intel_renderbuffer
*irb
,
957 struct intel_texture_image
*intel_image
=
958 intel_texture_image(irb
->tex_image
);
959 struct intel_mipmap_tree
*new_mt
;
960 int width
, height
, depth
;
962 intel_miptree_get_dimensions_for_image(irb
->tex_image
, &width
, &height
, &depth
);
964 new_mt
= intel_miptree_create(intel
, irb
->tex_image
->TexObject
->Target
,
965 intel_image
->base
.Base
.TexFormat
,
966 intel_image
->base
.Base
.Level
,
967 intel_image
->base
.Base
.Level
,
968 width
, height
, depth
,
970 irb
->mt
->num_samples
,
971 false /* force_y_tiling */);
973 if (intel
->vtbl
.is_hiz_depth_format(intel
, new_mt
->format
)) {
974 intel_miptree_alloc_hiz(intel
, new_mt
);
977 intel_miptree_copy_teximage(intel
, intel_image
, new_mt
, invalidate
);
979 intel_miptree_reference(&irb
->mt
, intel_image
->mt
);
980 intel_renderbuffer_set_draw_offset(irb
);
981 intel_miptree_release(&new_mt
);
985 * Do one-time context initializations related to GL_EXT_framebuffer_object.
986 * Hook in device driver functions.
989 intel_fbo_init(struct intel_context
*intel
)
991 intel
->ctx
.Driver
.NewFramebuffer
= intel_new_framebuffer
;
992 intel
->ctx
.Driver
.NewRenderbuffer
= intel_new_renderbuffer
;
993 intel
->ctx
.Driver
.MapRenderbuffer
= intel_map_renderbuffer
;
994 intel
->ctx
.Driver
.UnmapRenderbuffer
= intel_unmap_renderbuffer
;
995 intel
->ctx
.Driver
.BindFramebuffer
= intel_bind_framebuffer
;
996 intel
->ctx
.Driver
.FramebufferRenderbuffer
= intel_framebuffer_renderbuffer
;
997 intel
->ctx
.Driver
.RenderTexture
= intel_render_texture
;
998 intel
->ctx
.Driver
.FinishRenderTexture
= intel_finish_render_texture
;
999 intel
->ctx
.Driver
.ResizeBuffers
= intel_resize_buffers
;
1000 intel
->ctx
.Driver
.ValidateFramebuffer
= intel_validate_framebuffer
;
1001 intel
->ctx
.Driver
.BlitFramebuffer
= intel_blit_framebuffer
;
1002 intel
->ctx
.Driver
.EGLImageTargetRenderbufferStorage
=
1003 intel_image_target_renderbuffer_storage
;