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
);
309 rb
->NeedsFinishRenderTexture
= true;
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
->AllocStorage
= intel_nop_alloc_storage
;
495 intel_miptree_check_level_layer(mt
, level
, layer
);
496 irb
->mt_level
= level
;
498 switch (mt
->msaa_layout
) {
499 case INTEL_MSAA_LAYOUT_UMS
:
500 case INTEL_MSAA_LAYOUT_CMS
:
501 irb
->mt_layer
= layer
* mt
->num_samples
;
505 irb
->mt_layer
= layer
;
508 intel_miptree_reference(&irb
->mt
, mt
);
510 intel_renderbuffer_set_draw_offset(irb
);
512 if (mt
->hiz_mt
== NULL
&&
513 intel
->vtbl
.is_hiz_depth_format(intel
, rb
->Format
)) {
514 intel_miptree_alloc_hiz(intel
, mt
);
523 intel_renderbuffer_set_draw_offset(struct intel_renderbuffer
*irb
)
525 unsigned int dst_x
, dst_y
;
527 /* compute offset of the particular 2D image within the texture region */
528 intel_miptree_get_image_offset(irb
->mt
,
538 * Rendering to tiled buffers requires that the base address of the
539 * buffer be aligned to a page boundary. We generally render to
540 * textures by pointing the surface at the mipmap image level, which
541 * may not be aligned to a tile boundary.
543 * This function returns an appropriately-aligned base offset
544 * according to the tiling restrictions, plus any required x/y offset
548 intel_renderbuffer_tile_offsets(struct intel_renderbuffer
*irb
,
552 struct intel_region
*region
= irb
->mt
->region
;
553 uint32_t mask_x
, mask_y
;
555 intel_region_get_tile_masks(region
, &mask_x
, &mask_y
, false);
557 *tile_x
= irb
->draw_x
& mask_x
;
558 *tile_y
= irb
->draw_y
& mask_y
;
559 return intel_region_get_aligned_offset(region
, irb
->draw_x
& ~mask_x
,
560 irb
->draw_y
& ~mask_y
, false);
564 * Called by glFramebufferTexture[123]DEXT() (and other places) to
565 * prepare for rendering into texture memory. This might be called
566 * many times to choose different texture levels, cube faces, etc
567 * before intel_finish_render_texture() is ever called.
570 intel_render_texture(struct gl_context
* ctx
,
571 struct gl_framebuffer
*fb
,
572 struct gl_renderbuffer_attachment
*att
)
574 struct intel_context
*intel
= intel_context(ctx
);
575 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
576 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
577 struct gl_texture_image
*image
= rb
->TexImage
;
578 struct intel_texture_image
*intel_image
= intel_texture_image(image
);
579 struct intel_mipmap_tree
*mt
= intel_image
->mt
;
584 if (att
->CubeMapFace
> 0) {
585 assert(att
->Zoffset
== 0);
586 layer
= att
->CubeMapFace
;
588 layer
= att
->Zoffset
;
591 if (!intel_image
->mt
) {
592 /* Fallback on drawing to a texture that doesn't have a miptree
593 * (has a border, width/height 0, etc.)
595 _swrast_render_texture(ctx
, fb
, att
);
599 intel_miptree_check_level_layer(mt
, att
->TextureLevel
, layer
);
601 if (!intel_renderbuffer_update_wrapper(intel
, irb
, image
, layer
)) {
602 _swrast_render_texture(ctx
, fb
, att
);
606 DBG("Begin render %s texture tex=%u w=%d h=%d refcount=%d\n",
607 _mesa_get_format_name(image
->TexFormat
),
608 att
->Texture
->Name
, image
->Width
, image
->Height
,
611 /* update drawing region, etc */
612 intel_draw_buffer(ctx
);
617 * Called by Mesa when rendering to a texture is done.
620 intel_finish_render_texture(struct gl_context
* ctx
,
621 struct gl_renderbuffer_attachment
*att
)
623 struct intel_context
*intel
= intel_context(ctx
);
624 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
626 DBG("Finish render %s texture\n", _mesa_get_format_name(rb
->Format
));
628 /* Since we've (probably) rendered to the texture and will (likely) use
629 * it in the texture domain later on in this batchbuffer, flush the
630 * batch. Once again, we wish for a domain tracker in libdrm to cover
631 * usage inside of a batchbuffer like GEM does in the kernel.
633 intel_batchbuffer_emit_mi_flush(intel
);
636 #define fbo_incomplete(fb, ...) do { \
637 static GLuint msg_id = 0; \
638 if (unlikely(ctx->Const.ContextFlags & GL_CONTEXT_FLAG_DEBUG_BIT)) { \
639 _mesa_gl_debug(ctx, &msg_id, \
640 MESA_DEBUG_TYPE_OTHER, \
641 MESA_DEBUG_SEVERITY_MEDIUM, \
645 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED; \
649 * Do additional "completeness" testing of a framebuffer object.
652 intel_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
654 struct intel_context
*intel
= intel_context(ctx
);
655 struct intel_renderbuffer
*depthRb
=
656 intel_get_renderbuffer(fb
, BUFFER_DEPTH
);
657 struct intel_renderbuffer
*stencilRb
=
658 intel_get_renderbuffer(fb
, BUFFER_STENCIL
);
659 struct intel_mipmap_tree
*depth_mt
= NULL
, *stencil_mt
= NULL
;
662 DBG("%s() on fb %p (%s)\n", __FUNCTION__
,
663 fb
, (fb
== ctx
->DrawBuffer
? "drawbuffer" :
664 (fb
== ctx
->ReadBuffer
? "readbuffer" : "other buffer")));
667 depth_mt
= depthRb
->mt
;
669 stencil_mt
= stencilRb
->mt
;
670 if (stencil_mt
->stencil_mt
)
671 stencil_mt
= stencil_mt
->stencil_mt
;
674 if (depth_mt
&& stencil_mt
) {
675 if (depth_mt
== stencil_mt
) {
676 /* For true packed depth/stencil (not faked on prefers-separate-stencil
677 * hardware) we need to be sure they're the same level/layer, since
678 * we'll be emitting a single packet describing the packed setup.
680 if (depthRb
->mt_level
!= stencilRb
->mt_level
||
681 depthRb
->mt_layer
!= stencilRb
->mt_layer
) {
683 "FBO incomplete: depth image level/layer %d/%d != "
684 "stencil image %d/%d\n",
688 stencilRb
->mt_layer
);
691 if (!intel
->has_separate_stencil
) {
692 fbo_incomplete(fb
, "FBO incomplete: separate stencil "
695 if (stencil_mt
->format
!= MESA_FORMAT_S8
) {
696 fbo_incomplete(fb
, "FBO incomplete: separate stencil is %s "
698 _mesa_get_format_name(stencil_mt
->format
));
700 if (intel
->gen
< 7 && !intel_renderbuffer_has_hiz(depthRb
)) {
701 /* Before Gen7, separate depth and stencil buffers can be used
702 * only if HiZ is enabled. From the Sandybridge PRM, Volume 2,
703 * Part 1, Bit 3DSTATE_DEPTH_BUFFER.SeparateStencilBufferEnable:
704 * [DevSNB]: This field must be set to the same value (enabled
705 * or disabled) as Hierarchical Depth Buffer Enable.
707 fbo_incomplete(fb
, "FBO incomplete: separate stencil "
713 for (i
= 0; i
< Elements(fb
->Attachment
); i
++) {
714 struct gl_renderbuffer
*rb
;
715 struct intel_renderbuffer
*irb
;
717 if (fb
->Attachment
[i
].Type
== GL_NONE
)
720 /* A supported attachment will have a Renderbuffer set either
721 * from being a Renderbuffer or being a texture that got the
722 * intel_wrap_texture() treatment.
724 rb
= fb
->Attachment
[i
].Renderbuffer
;
726 fbo_incomplete(fb
, "FBO incomplete: attachment without "
731 if (fb
->Attachment
[i
].Type
== GL_TEXTURE
) {
732 if (rb
->TexImage
->Border
) {
733 fbo_incomplete(fb
, "FBO incomplete: texture with border\n");
738 irb
= intel_renderbuffer(rb
);
740 fbo_incomplete(fb
, "FBO incomplete: software rendering "
745 if (!intel
->vtbl
.render_target_supported(intel
, rb
)) {
746 fbo_incomplete(fb
, "FBO incomplete: Unsupported HW "
747 "texture/renderbuffer format attached: %s\n",
748 _mesa_get_format_name(intel_rb_format(irb
)));
754 * Try to do a glBlitFramebuffer using glCopyTexSubImage2D
755 * We can do this when the dst renderbuffer is actually a texture and
756 * there is no scaling, mirroring or scissoring.
758 * \return new buffer mask indicating the buffers left to blit using the
762 intel_blit_framebuffer_copy_tex_sub_image(struct gl_context
*ctx
,
763 GLint srcX0
, GLint srcY0
,
764 GLint srcX1
, GLint srcY1
,
765 GLint dstX0
, GLint dstY0
,
766 GLint dstX1
, GLint dstY1
,
767 GLbitfield mask
, GLenum filter
)
769 if (mask
& GL_COLOR_BUFFER_BIT
) {
771 const struct gl_framebuffer
*drawFb
= ctx
->DrawBuffer
;
772 const struct gl_framebuffer
*readFb
= ctx
->ReadBuffer
;
773 const struct gl_renderbuffer_attachment
*drawAtt
;
774 struct intel_renderbuffer
*srcRb
=
775 intel_renderbuffer(readFb
->_ColorReadBuffer
);
777 /* If the source and destination are the same size with no mirroring,
778 * the rectangles are within the size of the texture and there is no
779 * scissor then we can use glCopyTexSubimage2D to implement the blit.
780 * This will end up as a fast hardware blit on some drivers.
782 const GLboolean use_intel_copy_texsubimage
=
783 srcX0
- srcX1
== dstX0
- dstX1
&&
784 srcY0
- srcY1
== dstY0
- dstY1
&&
787 srcX0
>= 0 && srcX1
<= readFb
->Width
&&
788 srcY0
>= 0 && srcY1
<= readFb
->Height
&&
789 dstX0
>= 0 && dstX1
<= drawFb
->Width
&&
790 dstY0
>= 0 && dstY1
<= drawFb
->Height
&&
791 !ctx
->Scissor
.Enabled
;
793 /* Verify that all the draw buffers can be blitted using
794 * intel_copy_texsubimage().
796 for (i
= 0; i
< ctx
->DrawBuffer
->_NumColorDrawBuffers
; i
++) {
797 int idx
= ctx
->DrawBuffer
->_ColorDrawBufferIndexes
[i
];
800 drawAtt
= &drawFb
->Attachment
[idx
];
802 if (srcRb
&& drawAtt
&& drawAtt
->Texture
&&
803 use_intel_copy_texsubimage
)
809 /* Blit to all active draw buffers */
810 for (i
= 0; i
< ctx
->DrawBuffer
->_NumColorDrawBuffers
; i
++) {
811 int idx
= ctx
->DrawBuffer
->_ColorDrawBufferIndexes
[i
];
814 drawAtt
= &drawFb
->Attachment
[idx
];
817 const struct gl_texture_object
*texObj
= drawAtt
->Texture
;
818 const GLuint dstLevel
= drawAtt
->TextureLevel
;
819 const GLenum target
= texObj
->Target
;
821 struct gl_texture_image
*texImage
=
822 _mesa_select_tex_image(ctx
, texObj
, target
, dstLevel
);
824 if (!intel_copy_texsubimage(intel_context(ctx
),
825 intel_texture_image(texImage
),
829 srcX1
- srcX0
, /* width */
835 mask
&= ~GL_COLOR_BUFFER_BIT
;
842 intel_blit_framebuffer(struct gl_context
*ctx
,
843 GLint srcX0
, GLint srcY0
, GLint srcX1
, GLint srcY1
,
844 GLint dstX0
, GLint dstY0
, GLint dstX1
, GLint dstY1
,
845 GLbitfield mask
, GLenum filter
)
847 /* Try faster, glCopyTexSubImage2D approach first which uses the BLT. */
848 mask
= intel_blit_framebuffer_copy_tex_sub_image(ctx
,
849 srcX0
, srcY0
, srcX1
, srcY1
,
850 dstX0
, dstY0
, dstX1
, dstY1
,
856 mask
= brw_blorp_framebuffer(intel_context(ctx
),
857 srcX0
, srcY0
, srcX1
, srcY1
,
858 dstX0
, dstY0
, dstX1
, dstY1
,
864 _mesa_meta_BlitFramebuffer(ctx
,
865 srcX0
, srcY0
, srcX1
, srcY1
,
866 dstX0
, dstY0
, dstX1
, dstY1
,
871 * This is a no-op except on multisample buffers shared with DRI2.
874 intel_renderbuffer_set_needs_downsample(struct intel_renderbuffer
*irb
)
876 if (irb
->mt
&& irb
->mt
->singlesample_mt
)
877 irb
->mt
->need_downsample
= true;
881 * Does the renderbuffer have hiz enabled?
884 intel_renderbuffer_has_hiz(struct intel_renderbuffer
*irb
)
886 return intel_miptree_slice_has_hiz(irb
->mt
, irb
->mt_level
, irb
->mt_layer
);
890 intel_renderbuffer_set_needs_hiz_resolve(struct intel_renderbuffer
*irb
)
893 intel_miptree_slice_set_needs_hiz_resolve(irb
->mt
,
900 intel_renderbuffer_set_needs_depth_resolve(struct intel_renderbuffer
*irb
)
903 intel_miptree_slice_set_needs_depth_resolve(irb
->mt
,
910 intel_renderbuffer_resolve_hiz(struct intel_context
*intel
,
911 struct intel_renderbuffer
*irb
)
914 return intel_miptree_slice_resolve_hiz(intel
,
923 intel_renderbuffer_resolve_depth(struct intel_context
*intel
,
924 struct intel_renderbuffer
*irb
)
927 return intel_miptree_slice_resolve_depth(intel
,
936 intel_renderbuffer_move_to_temp(struct intel_context
*intel
,
937 struct intel_renderbuffer
*irb
,
940 struct gl_renderbuffer
*rb
=&irb
->Base
.Base
;
941 struct intel_texture_image
*intel_image
= intel_texture_image(rb
->TexImage
);
942 struct intel_mipmap_tree
*new_mt
;
943 int width
, height
, depth
;
945 intel_miptree_get_dimensions_for_image(rb
->TexImage
, &width
, &height
, &depth
);
947 new_mt
= intel_miptree_create(intel
, rb
->TexImage
->TexObject
->Target
,
948 intel_image
->base
.Base
.TexFormat
,
949 intel_image
->base
.Base
.Level
,
950 intel_image
->base
.Base
.Level
,
951 width
, height
, depth
,
953 irb
->mt
->num_samples
,
954 false /* force_y_tiling */);
956 if (intel
->vtbl
.is_hiz_depth_format(intel
, new_mt
->format
)) {
957 intel_miptree_alloc_hiz(intel
, new_mt
);
960 intel_miptree_copy_teximage(intel
, intel_image
, new_mt
, invalidate
);
962 intel_miptree_reference(&irb
->mt
, intel_image
->mt
);
963 intel_renderbuffer_set_draw_offset(irb
);
964 intel_miptree_release(&new_mt
);
968 * Do one-time context initializations related to GL_EXT_framebuffer_object.
969 * Hook in device driver functions.
972 intel_fbo_init(struct intel_context
*intel
)
974 intel
->ctx
.Driver
.NewFramebuffer
= intel_new_framebuffer
;
975 intel
->ctx
.Driver
.NewRenderbuffer
= intel_new_renderbuffer
;
976 intel
->ctx
.Driver
.MapRenderbuffer
= intel_map_renderbuffer
;
977 intel
->ctx
.Driver
.UnmapRenderbuffer
= intel_unmap_renderbuffer
;
978 intel
->ctx
.Driver
.BindFramebuffer
= intel_bind_framebuffer
;
979 intel
->ctx
.Driver
.FramebufferRenderbuffer
= intel_framebuffer_renderbuffer
;
980 intel
->ctx
.Driver
.RenderTexture
= intel_render_texture
;
981 intel
->ctx
.Driver
.FinishRenderTexture
= intel_finish_render_texture
;
982 intel
->ctx
.Driver
.ResizeBuffers
= intel_resize_buffers
;
983 intel
->ctx
.Driver
.ValidateFramebuffer
= intel_validate_framebuffer
;
984 intel
->ctx
.Driver
.BlitFramebuffer
= intel_blit_framebuffer
;
985 intel
->ctx
.Driver
.EGLImageTargetRenderbufferStorage
=
986 intel_image_target_renderbuffer_storage
;