2 * Copyright 2006 VMware, Inc.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 #include "main/enums.h"
27 #include "main/imports.h"
28 #include "main/macros.h"
29 #include "main/mtypes.h"
30 #include "main/fbobject.h"
31 #include "main/framebuffer.h"
32 #include "main/renderbuffer.h"
33 #include "main/context.h"
34 #include "main/teximage.h"
35 #include "main/image.h"
36 #include "main/condrender.h"
37 #include "util/hash_table.h"
40 #include "swrast/swrast.h"
41 #include "drivers/common/meta.h"
43 #include "intel_batchbuffer.h"
44 #include "intel_buffers.h"
45 #include "intel_blit.h"
46 #include "intel_fbo.h"
47 #include "intel_mipmap_tree.h"
48 #include "intel_image.h"
49 #include "intel_screen.h"
50 #include "intel_tex.h"
51 #include "brw_context.h"
53 #define FILE_DEBUG_FLAG DEBUG_FBO
55 /** Called by gl_renderbuffer::Delete() */
57 intel_delete_renderbuffer(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
)
59 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
63 intel_miptree_release(&irb
->mt
);
64 intel_miptree_release(&irb
->singlesample_mt
);
66 _mesa_delete_renderbuffer(ctx
, rb
);
70 * \brief Downsample a winsys renderbuffer from mt to singlesample_mt.
72 * If the miptree needs no downsample, then skip.
75 intel_renderbuffer_downsample(struct brw_context
*brw
,
76 struct intel_renderbuffer
*irb
)
78 if (!irb
->need_downsample
)
80 intel_miptree_updownsample(brw
, irb
->mt
, irb
->singlesample_mt
);
81 irb
->need_downsample
= false;
85 * \brief Upsample a winsys renderbuffer from singlesample_mt to mt.
87 * The upsample is done unconditionally.
90 intel_renderbuffer_upsample(struct brw_context
*brw
,
91 struct intel_renderbuffer
*irb
)
93 assert(!irb
->need_downsample
);
95 intel_miptree_updownsample(brw
, irb
->singlesample_mt
, irb
->mt
);
99 * \see dd_function_table::MapRenderbuffer
102 intel_map_renderbuffer(struct gl_context
*ctx
,
103 struct gl_renderbuffer
*rb
,
104 GLuint x
, GLuint y
, GLuint w
, GLuint h
,
109 struct brw_context
*brw
= brw_context(ctx
);
110 struct swrast_renderbuffer
*srb
= (struct swrast_renderbuffer
*)rb
;
111 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
112 struct intel_mipmap_tree
*mt
;
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(brw
);
127 /* The MapRenderbuffer API should always return a single-sampled mapping.
128 * The case we are asked to map multisampled RBs is in glReadPixels() (or
129 * swrast paths like glCopyTexImage()) from a window-system MSAA buffer,
130 * and GL expects an automatic resolve to happen.
132 * If it's a color miptree, there is a ->singlesample_mt which wraps the
133 * actual window system renderbuffer (which we may resolve to at any time),
134 * while the miptree itself is our driver-private allocation. If it's a
135 * depth or stencil miptree, we have a private MSAA buffer and no shared
136 * singlesample buffer, and since we don't expect anybody to ever actually
137 * resolve it, we just make a temporary singlesample buffer now when we
140 if (rb
->NumSamples
> 1) {
141 if (!irb
->singlesample_mt
) {
142 irb
->singlesample_mt
=
143 intel_miptree_create_for_renderbuffer(brw
, irb
->mt
->format
,
144 rb
->Width
, rb
->Height
,
146 if (!irb
->singlesample_mt
)
148 irb
->singlesample_mt_is_tmp
= true;
149 irb
->need_downsample
= true;
152 intel_renderbuffer_downsample(brw
, irb
);
153 mt
= irb
->singlesample_mt
;
155 irb
->need_map_upsample
= mode
& GL_MAP_WRITE_BIT
;
160 /* For a window-system renderbuffer, we need to flip the mapping we receive
161 * upside-down. So we need to ask for a rectangle on flipped vertically, and
162 * we then return a pointer to the bottom of it with a negative stride.
165 y
= rb
->Height
- y
- h
;
168 intel_miptree_map(brw
, mt
, irb
->mt_level
, irb
->mt_layer
,
169 x
, y
, w
, h
, mode
, &map
, &stride
);
172 map
+= (h
- 1) * stride
;
176 DBG("%s: rb %d (%s) mt mapped: (%d, %d) (%dx%d) -> %p/%"PRIdPTR
"\n",
177 __func__
, rb
->Name
, _mesa_get_format_name(rb
->Format
),
178 x
, y
, w
, h
, map
, stride
);
181 *out_stride
= stride
;
190 * \see dd_function_table::UnmapRenderbuffer
193 intel_unmap_renderbuffer(struct gl_context
*ctx
,
194 struct gl_renderbuffer
*rb
)
196 struct brw_context
*brw
= brw_context(ctx
);
197 struct swrast_renderbuffer
*srb
= (struct swrast_renderbuffer
*)rb
;
198 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
199 struct intel_mipmap_tree
*mt
;
201 DBG("%s: rb %d (%s)\n", __func__
,
202 rb
->Name
, _mesa_get_format_name(rb
->Format
));
205 /* this is a malloc'd renderbuffer (accum buffer) */
210 if (rb
->NumSamples
> 1) {
211 mt
= irb
->singlesample_mt
;
216 intel_miptree_unmap(brw
, mt
, irb
->mt_level
, irb
->mt_layer
);
218 if (irb
->need_map_upsample
) {
219 intel_renderbuffer_upsample(brw
, irb
);
220 irb
->need_map_upsample
= false;
223 if (irb
->singlesample_mt_is_tmp
)
224 intel_miptree_release(&irb
->singlesample_mt
);
229 * Round up the requested multisample count to the next supported sample size.
232 intel_quantize_num_samples(struct intel_screen
*intel
, unsigned num_samples
)
234 const int *msaa_modes
= intel_supported_msaa_modes(intel
);
235 int quantized_samples
= 0;
237 for (int i
= 0; msaa_modes
[i
] != -1; ++i
) {
238 if (msaa_modes
[i
] >= num_samples
)
239 quantized_samples
= msaa_modes
[i
];
244 return quantized_samples
;
248 intel_renderbuffer_format(struct gl_context
* ctx
, GLenum internalFormat
)
250 struct brw_context
*brw
= brw_context(ctx
);
252 switch (internalFormat
) {
254 /* Use the same format-choice logic as for textures.
255 * Renderbuffers aren't any different from textures for us,
256 * except they're less useful because you can't texture with
259 return ctx
->Driver
.ChooseTextureFormat(ctx
, GL_TEXTURE_2D
,
263 case GL_STENCIL_INDEX
:
264 case GL_STENCIL_INDEX1_EXT
:
265 case GL_STENCIL_INDEX4_EXT
:
266 case GL_STENCIL_INDEX8_EXT
:
267 case GL_STENCIL_INDEX16_EXT
:
268 /* These aren't actual texture formats, so force them here. */
269 if (brw
->has_separate_stencil
) {
270 return MESA_FORMAT_S_UINT8
;
272 assert(!brw
->must_use_separate_stencil
);
273 return MESA_FORMAT_Z24_UNORM_S8_UINT
;
279 intel_alloc_private_renderbuffer_storage(struct gl_context
* ctx
, struct gl_renderbuffer
*rb
,
280 GLenum internalFormat
,
281 GLuint width
, GLuint height
)
283 struct brw_context
*brw
= brw_context(ctx
);
284 struct intel_screen
*screen
= brw
->intelScreen
;
285 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
287 assert(rb
->Format
!= MESA_FORMAT_NONE
);
289 rb
->NumSamples
= intel_quantize_num_samples(screen
, rb
->NumSamples
);
292 rb
->_BaseFormat
= _mesa_get_format_base_format(rb
->Format
);
294 intel_miptree_release(&irb
->mt
);
296 DBG("%s: %s: %s (%dx%d)\n", __func__
,
297 _mesa_enum_to_string(internalFormat
),
298 _mesa_get_format_name(rb
->Format
), width
, height
);
300 if (width
== 0 || height
== 0)
303 irb
->mt
= intel_miptree_create_for_renderbuffer(brw
, rb
->Format
,
309 irb
->layer_count
= 1;
315 * Called via glRenderbufferStorageEXT() to set the format and allocate
316 * storage for a user-created renderbuffer.
319 intel_alloc_renderbuffer_storage(struct gl_context
* ctx
, struct gl_renderbuffer
*rb
,
320 GLenum internalFormat
,
321 GLuint width
, GLuint height
)
323 rb
->Format
= intel_renderbuffer_format(ctx
, internalFormat
);
324 return intel_alloc_private_renderbuffer_storage(ctx
, rb
, internalFormat
, width
, height
);
328 intel_image_target_renderbuffer_storage(struct gl_context
*ctx
,
329 struct gl_renderbuffer
*rb
,
332 struct brw_context
*brw
= brw_context(ctx
);
333 struct intel_renderbuffer
*irb
;
337 screen
= brw
->intelScreen
->driScrnPriv
;
338 image
= screen
->dri2
.image
->lookupEGLImage(screen
, image_handle
,
339 screen
->loaderPrivate
);
343 if (image
->planar_format
&& image
->planar_format
->nplanes
> 1) {
344 _mesa_error(ctx
, GL_INVALID_OPERATION
,
345 "glEGLImageTargetRenderbufferStorage(planar buffers are not "
346 "supported as render targets.)");
350 /* __DRIimage is opaque to the core so it has to be checked here */
351 if (!brw
->format_supported_as_render_target
[image
->format
]) {
352 _mesa_error(ctx
, GL_INVALID_OPERATION
,
353 "glEGLImageTargetRenderbufferStorage(unsupported image format)");
357 irb
= intel_renderbuffer(rb
);
358 intel_miptree_release(&irb
->mt
);
360 /* Disable creation of the miptree's aux buffers because the driver exposes
361 * no EGL API to manage them. That is, there is no API for resolving the aux
362 * buffer's content to the main buffer nor for invalidating the aux buffer's
365 irb
->mt
= intel_miptree_create_for_bo(brw
,
373 MIPTREE_LAYOUT_DISABLE_AUX
);
377 rb
->InternalFormat
= image
->internal_format
;
378 rb
->Width
= image
->width
;
379 rb
->Height
= image
->height
;
380 rb
->Format
= image
->format
;
381 rb
->_BaseFormat
= _mesa_get_format_base_format(image
->format
);
382 rb
->NeedsFinishRenderTexture
= true;
383 irb
->layer_count
= 1;
387 * Called by _mesa_resize_framebuffer() for each hardware renderbuffer when a
388 * window system framebuffer is resized.
390 * Any actual buffer reallocations for hardware renderbuffers (which would
391 * have triggered _mesa_resize_framebuffer()) were done by
392 * intel_process_dri2_buffer().
395 intel_alloc_window_storage(struct gl_context
* ctx
, struct gl_renderbuffer
*rb
,
396 GLenum internalFormat
, GLuint width
, GLuint height
)
399 assert(rb
->Name
== 0);
402 rb
->InternalFormat
= internalFormat
;
407 /** Dummy function for gl_renderbuffer::AllocStorage() */
409 intel_nop_alloc_storage(struct gl_context
* ctx
, struct gl_renderbuffer
*rb
,
410 GLenum internalFormat
, GLuint width
, GLuint height
)
413 (void) internalFormat
;
416 _mesa_problem(ctx
, "intel_nop_alloc_storage should never be called.");
421 * Create a new intel_renderbuffer which corresponds to an on-screen window,
422 * not a user-created renderbuffer.
424 * \param num_samples must be quantized.
426 struct intel_renderbuffer
*
427 intel_create_renderbuffer(mesa_format format
, unsigned num_samples
)
429 struct intel_renderbuffer
*irb
;
430 struct gl_renderbuffer
*rb
;
432 GET_CURRENT_CONTEXT(ctx
);
434 irb
= CALLOC_STRUCT(intel_renderbuffer
);
436 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "creating renderbuffer");
440 rb
= &irb
->Base
.Base
;
441 irb
->layer_count
= 1;
443 _mesa_init_renderbuffer(rb
, 0);
444 rb
->ClassID
= INTEL_RB_CLASS
;
445 rb
->_BaseFormat
= _mesa_get_format_base_format(format
);
447 rb
->InternalFormat
= rb
->_BaseFormat
;
448 rb
->NumSamples
= num_samples
;
450 /* intel-specific methods */
451 rb
->Delete
= intel_delete_renderbuffer
;
452 rb
->AllocStorage
= intel_alloc_window_storage
;
458 * Private window-system buffers (as opposed to ones shared with the display
459 * server created with intel_create_renderbuffer()) are most similar in their
460 * handling to user-created renderbuffers, but they have a resize handler that
461 * may be called at intel_update_renderbuffers() time.
463 * \param num_samples must be quantized.
465 struct intel_renderbuffer
*
466 intel_create_private_renderbuffer(mesa_format format
, unsigned num_samples
)
468 struct intel_renderbuffer
*irb
;
470 irb
= intel_create_renderbuffer(format
, num_samples
);
471 irb
->Base
.Base
.AllocStorage
= intel_alloc_private_renderbuffer_storage
;
477 * Create a new renderbuffer object.
478 * Typically called via glBindRenderbufferEXT().
480 static struct gl_renderbuffer
*
481 intel_new_renderbuffer(struct gl_context
* ctx
, GLuint name
)
483 struct intel_renderbuffer
*irb
;
484 struct gl_renderbuffer
*rb
;
486 irb
= CALLOC_STRUCT(intel_renderbuffer
);
488 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "creating renderbuffer");
492 rb
= &irb
->Base
.Base
;
494 _mesa_init_renderbuffer(rb
, name
);
495 rb
->ClassID
= INTEL_RB_CLASS
;
497 /* intel-specific methods */
498 rb
->Delete
= intel_delete_renderbuffer
;
499 rb
->AllocStorage
= intel_alloc_renderbuffer_storage
;
500 /* span routines set in alloc_storage function */
506 intel_renderbuffer_update_wrapper(struct brw_context
*brw
,
507 struct intel_renderbuffer
*irb
,
508 struct gl_texture_image
*image
,
512 struct gl_renderbuffer
*rb
= &irb
->Base
.Base
;
513 struct intel_texture_image
*intel_image
= intel_texture_image(image
);
514 struct intel_mipmap_tree
*mt
= intel_image
->mt
;
515 int level
= image
->Level
;
517 rb
->AllocStorage
= intel_nop_alloc_storage
;
519 /* adjust for texture view parameters */
520 layer
+= image
->TexObject
->MinLayer
;
521 level
+= image
->TexObject
->MinLevel
;
523 intel_miptree_check_level_layer(mt
, level
, layer
);
524 irb
->mt_level
= level
;
526 int layer_multiplier
;
527 switch (mt
->msaa_layout
) {
528 case INTEL_MSAA_LAYOUT_UMS
:
529 case INTEL_MSAA_LAYOUT_CMS
:
530 layer_multiplier
= mt
->num_samples
;
534 layer_multiplier
= 1;
537 irb
->mt_layer
= layer_multiplier
* layer
;
540 irb
->layer_count
= 1;
541 } else if (image
->TexObject
->NumLayers
> 0) {
542 irb
->layer_count
= image
->TexObject
->NumLayers
;
544 irb
->layer_count
= mt
->level
[level
].depth
/ layer_multiplier
;
547 intel_miptree_reference(&irb
->mt
, mt
);
549 intel_renderbuffer_set_draw_offset(irb
);
551 if (intel_miptree_wants_hiz_buffer(brw
, mt
)) {
552 intel_miptree_alloc_hiz(brw
, mt
);
561 intel_renderbuffer_set_draw_offset(struct intel_renderbuffer
*irb
)
563 unsigned int dst_x
, dst_y
;
565 /* compute offset of the particular 2D image within the texture region */
566 intel_miptree_get_image_offset(irb
->mt
,
576 * Called by glFramebufferTexture[123]DEXT() (and other places) to
577 * prepare for rendering into texture memory. This might be called
578 * many times to choose different texture levels, cube faces, etc
579 * before intel_finish_render_texture() is ever called.
582 intel_render_texture(struct gl_context
* ctx
,
583 struct gl_framebuffer
*fb
,
584 struct gl_renderbuffer_attachment
*att
)
586 struct brw_context
*brw
= brw_context(ctx
);
587 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
588 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
589 struct gl_texture_image
*image
= rb
->TexImage
;
590 struct intel_texture_image
*intel_image
= intel_texture_image(image
);
591 struct intel_mipmap_tree
*mt
= intel_image
->mt
;
596 if (att
->CubeMapFace
> 0) {
597 assert(att
->Zoffset
== 0);
598 layer
= att
->CubeMapFace
;
600 layer
= att
->Zoffset
;
603 if (!intel_image
->mt
) {
604 /* Fallback on drawing to a texture that doesn't have a miptree
605 * (has a border, width/height 0, etc.)
607 _swrast_render_texture(ctx
, fb
, att
);
611 intel_miptree_check_level_layer(mt
, att
->TextureLevel
, layer
);
613 if (!intel_renderbuffer_update_wrapper(brw
, irb
, image
, layer
, att
->Layered
)) {
614 _swrast_render_texture(ctx
, fb
, att
);
618 DBG("Begin render %s texture tex=%u w=%d h=%d d=%d refcount=%d\n",
619 _mesa_get_format_name(image
->TexFormat
),
620 att
->Texture
->Name
, image
->Width
, image
->Height
, image
->Depth
,
625 #define fbo_incomplete(fb, ...) do { \
626 static GLuint msg_id = 0; \
627 if (unlikely(ctx->Const.ContextFlags & GL_CONTEXT_FLAG_DEBUG_BIT)) { \
628 _mesa_gl_debug(ctx, &msg_id, \
629 MESA_DEBUG_SOURCE_API, \
630 MESA_DEBUG_TYPE_OTHER, \
631 MESA_DEBUG_SEVERITY_MEDIUM, \
635 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED; \
639 * Do additional "completeness" testing of a framebuffer object.
642 intel_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
644 struct brw_context
*brw
= brw_context(ctx
);
645 struct intel_renderbuffer
*depthRb
=
646 intel_get_renderbuffer(fb
, BUFFER_DEPTH
);
647 struct intel_renderbuffer
*stencilRb
=
648 intel_get_renderbuffer(fb
, BUFFER_STENCIL
);
649 struct intel_mipmap_tree
*depth_mt
= NULL
, *stencil_mt
= NULL
;
652 DBG("%s() on fb %p (%s)\n", __func__
,
653 fb
, (fb
== ctx
->DrawBuffer
? "drawbuffer" :
654 (fb
== ctx
->ReadBuffer
? "readbuffer" : "other buffer")));
657 depth_mt
= depthRb
->mt
;
659 stencil_mt
= stencilRb
->mt
;
660 if (stencil_mt
->stencil_mt
)
661 stencil_mt
= stencil_mt
->stencil_mt
;
664 if (depth_mt
&& stencil_mt
) {
666 /* For gen >= 6, we are using the lod/minimum-array-element fields
667 * and supporting layered rendering. This means that we must restrict
668 * the depth & stencil attachments to match in various more retrictive
669 * ways. (width, height, depth, LOD and layer)
671 if (depth_mt
->physical_width0
!= stencil_mt
->physical_width0
||
672 depth_mt
->physical_height0
!= stencil_mt
->physical_height0
||
673 depth_mt
->physical_depth0
!= stencil_mt
->physical_depth0
||
674 depthRb
->mt_level
!= stencilRb
->mt_level
||
675 depthRb
->mt_layer
!= stencilRb
->mt_layer
) {
677 "FBO incomplete: depth and stencil must match in"
678 "width, height, depth, LOD and layer\n");
681 if (depth_mt
== stencil_mt
) {
682 /* For true packed depth/stencil (not faked on prefers-separate-stencil
683 * hardware) we need to be sure they're the same level/layer, since
684 * we'll be emitting a single packet describing the packed setup.
686 if (depthRb
->mt_level
!= stencilRb
->mt_level
||
687 depthRb
->mt_layer
!= stencilRb
->mt_layer
) {
689 "FBO incomplete: depth image level/layer %d/%d != "
690 "stencil image %d/%d\n",
694 stencilRb
->mt_layer
);
697 if (!brw
->has_separate_stencil
) {
698 fbo_incomplete(fb
, "FBO incomplete: separate stencil "
701 if (stencil_mt
->format
!= MESA_FORMAT_S_UINT8
) {
702 fbo_incomplete(fb
, "FBO incomplete: separate stencil is %s "
704 _mesa_get_format_name(stencil_mt
->format
));
706 if (brw
->gen
< 7 && !intel_renderbuffer_has_hiz(depthRb
)) {
707 /* Before Gen7, separate depth and stencil buffers can be used
708 * only if HiZ is enabled. From the Sandybridge PRM, Volume 2,
709 * Part 1, Bit 3DSTATE_DEPTH_BUFFER.SeparateStencilBufferEnable:
710 * [DevSNB]: This field must be set to the same value (enabled
711 * or disabled) as Hierarchical Depth Buffer Enable.
713 fbo_incomplete(fb
, "FBO incomplete: separate stencil "
719 for (i
= 0; i
< ARRAY_SIZE(fb
->Attachment
); i
++) {
720 struct gl_renderbuffer
*rb
;
721 struct intel_renderbuffer
*irb
;
723 if (fb
->Attachment
[i
].Type
== GL_NONE
)
726 /* A supported attachment will have a Renderbuffer set either
727 * from being a Renderbuffer or being a texture that got the
728 * intel_wrap_texture() treatment.
730 rb
= fb
->Attachment
[i
].Renderbuffer
;
732 fbo_incomplete(fb
, "FBO incomplete: attachment without "
737 if (fb
->Attachment
[i
].Type
== GL_TEXTURE
) {
738 if (rb
->TexImage
->Border
) {
739 fbo_incomplete(fb
, "FBO incomplete: texture with border\n");
744 irb
= intel_renderbuffer(rb
);
746 fbo_incomplete(fb
, "FBO incomplete: software rendering "
751 if (!brw_render_target_supported(brw
, rb
)) {
752 fbo_incomplete(fb
, "FBO incomplete: Unsupported HW "
753 "texture/renderbuffer format attached: %s\n",
754 _mesa_get_format_name(intel_rb_format(irb
)));
760 * Try to do a glBlitFramebuffer using glCopyTexSubImage2D
761 * We can do this when the dst renderbuffer is actually a texture and
762 * there is no scaling, mirroring or scissoring.
764 * \return new buffer mask indicating the buffers left to blit using the
768 intel_blit_framebuffer_with_blitter(struct gl_context
*ctx
,
769 const struct gl_framebuffer
*readFb
,
770 const struct gl_framebuffer
*drawFb
,
771 GLint srcX0
, GLint srcY0
,
772 GLint srcX1
, GLint srcY1
,
773 GLint dstX0
, GLint dstY0
,
774 GLint dstX1
, GLint dstY1
,
777 struct brw_context
*brw
= brw_context(ctx
);
779 /* Sync up the state of window system buffers. We need to do this before
780 * we go looking for the buffers.
782 intel_prepare_render(brw
);
784 if (mask
& GL_COLOR_BUFFER_BIT
) {
786 struct gl_renderbuffer
*src_rb
= readFb
->_ColorReadBuffer
;
787 struct intel_renderbuffer
*src_irb
= intel_renderbuffer(src_rb
);
790 perf_debug("glBlitFramebuffer(): missing src renderbuffer. "
791 "Falling back to software rendering.\n");
795 /* If the source and destination are the same size with no mirroring,
796 * the rectangles are within the size of the texture and there is no
797 * scissor, then we can probably use the blit engine.
799 if (!(srcX0
- srcX1
== dstX0
- dstX1
&&
800 srcY0
- srcY1
== dstY0
- dstY1
&&
803 srcX0
>= 0 && srcX1
<= readFb
->Width
&&
804 srcY0
>= 0 && srcY1
<= readFb
->Height
&&
805 dstX0
>= 0 && dstX1
<= drawFb
->Width
&&
806 dstY0
>= 0 && dstY1
<= drawFb
->Height
&&
807 !(ctx
->Scissor
.EnableFlags
))) {
808 perf_debug("glBlitFramebuffer(): non-1:1 blit. "
809 "Falling back to software rendering.\n");
813 /* Blit to all active draw buffers. We don't do any pre-checking,
814 * because we assume that copying to MRTs is rare, and failure midway
815 * through copying is even more rare. Even if it was to occur, it's
816 * safe to let meta start the copy over from scratch, because
817 * glBlitFramebuffer completely overwrites the destination pixels, and
818 * results are undefined if any destination pixels have a dependency on
821 for (i
= 0; i
< drawFb
->_NumColorDrawBuffers
; i
++) {
822 struct gl_renderbuffer
*dst_rb
= drawFb
->_ColorDrawBuffers
[i
];
823 struct intel_renderbuffer
*dst_irb
= intel_renderbuffer(dst_rb
);
826 perf_debug("glBlitFramebuffer(): missing dst renderbuffer. "
827 "Falling back to software rendering.\n");
831 if (!intel_miptree_blit(brw
,
833 src_irb
->mt_level
, src_irb
->mt_layer
,
834 srcX0
, srcY0
, src_rb
->Name
== 0,
836 dst_irb
->mt_level
, dst_irb
->mt_layer
,
837 dstX0
, dstY0
, dst_rb
->Name
== 0,
838 dstX1
- dstX0
, dstY1
- dstY0
, GL_COPY
)) {
839 perf_debug("glBlitFramebuffer(): unknown blit failure. "
840 "Falling back to software rendering.\n");
845 mask
&= ~GL_COLOR_BUFFER_BIT
;
852 intel_blit_framebuffer(struct gl_context
*ctx
,
853 struct gl_framebuffer
*readFb
,
854 struct gl_framebuffer
*drawFb
,
855 GLint srcX0
, GLint srcY0
, GLint srcX1
, GLint srcY1
,
856 GLint dstX0
, GLint dstY0
, GLint dstX1
, GLint dstY1
,
857 GLbitfield mask
, GLenum filter
)
859 struct brw_context
*brw
= brw_context(ctx
);
861 /* Page 679 of OpenGL 4.4 spec says:
862 * "Added BlitFramebuffer to commands affected by conditional rendering in
863 * section 10.10 (Bug 9562)."
865 if (!_mesa_check_conditional_render(ctx
))
868 mask
= brw_blorp_framebuffer(brw
, readFb
, drawFb
,
869 srcX0
, srcY0
, srcX1
, srcY1
,
870 dstX0
, dstY0
, dstX1
, dstY1
,
875 mask
= _mesa_meta_BlitFramebuffer(ctx
, readFb
, drawFb
,
876 srcX0
, srcY0
, srcX1
, srcY1
,
877 dstX0
, dstY0
, dstX1
, dstY1
,
882 if (brw
->gen
>= 8 && (mask
& GL_STENCIL_BUFFER_BIT
)) {
883 assert(!"Invalid blit");
886 /* Try using the BLT engine. */
887 mask
= intel_blit_framebuffer_with_blitter(ctx
, readFb
, drawFb
,
888 srcX0
, srcY0
, srcX1
, srcY1
,
889 dstX0
, dstY0
, dstX1
, dstY1
,
894 _swrast_BlitFramebuffer(ctx
, readFb
, drawFb
,
895 srcX0
, srcY0
, srcX1
, srcY1
,
896 dstX0
, dstY0
, dstX1
, dstY1
,
901 * Gen4-5 implementation of glBlitFrameBuffer().
903 * Tries BLT, Meta, then swrast.
905 * Gen4-5 have a single ring for both 3D and BLT operations, so there's no
906 * inter-ring synchronization issues like on Gen6+. It is apparently faster
907 * than using the 3D pipeline. Original Gen4 also has to rebase and copy
908 * miptree slices in order to render to unaligned locations.
911 gen4_blit_framebuffer(struct gl_context
*ctx
,
912 struct gl_framebuffer
*readFb
,
913 struct gl_framebuffer
*drawFb
,
914 GLint srcX0
, GLint srcY0
, GLint srcX1
, GLint srcY1
,
915 GLint dstX0
, GLint dstY0
, GLint dstX1
, GLint dstY1
,
916 GLbitfield mask
, GLenum filter
)
918 /* Page 679 of OpenGL 4.4 spec says:
919 * "Added BlitFramebuffer to commands affected by conditional rendering in
920 * section 10.10 (Bug 9562)."
922 if (!_mesa_check_conditional_render(ctx
))
925 mask
= intel_blit_framebuffer_with_blitter(ctx
, readFb
, drawFb
,
926 srcX0
, srcY0
, srcX1
, srcY1
,
927 dstX0
, dstY0
, dstX1
, dstY1
,
932 mask
= _mesa_meta_BlitFramebuffer(ctx
, readFb
, drawFb
,
933 srcX0
, srcY0
, srcX1
, srcY1
,
934 dstX0
, dstY0
, dstX1
, dstY1
,
939 _swrast_BlitFramebuffer(ctx
, readFb
, drawFb
,
940 srcX0
, srcY0
, srcX1
, srcY1
,
941 dstX0
, dstY0
, dstX1
, dstY1
,
946 * Does the renderbuffer have hiz enabled?
949 intel_renderbuffer_has_hiz(struct intel_renderbuffer
*irb
)
951 return intel_miptree_level_has_hiz(irb
->mt
, irb
->mt_level
);
955 intel_renderbuffer_resolve_hiz(struct brw_context
*brw
,
956 struct intel_renderbuffer
*irb
)
959 return intel_miptree_slice_resolve_hiz(brw
,
968 intel_renderbuffer_att_set_needs_depth_resolve(struct gl_renderbuffer_attachment
*att
)
970 struct intel_renderbuffer
*irb
= intel_renderbuffer(att
->Renderbuffer
);
973 intel_miptree_set_all_slices_need_depth_resolve(irb
->mt
, irb
->mt_level
);
975 intel_miptree_slice_set_needs_depth_resolve(irb
->mt
,
983 intel_renderbuffer_resolve_depth(struct brw_context
*brw
,
984 struct intel_renderbuffer
*irb
)
987 return intel_miptree_slice_resolve_depth(brw
,
996 intel_renderbuffer_move_to_temp(struct brw_context
*brw
,
997 struct intel_renderbuffer
*irb
,
1000 struct gl_renderbuffer
*rb
=&irb
->Base
.Base
;
1001 struct intel_texture_image
*intel_image
= intel_texture_image(rb
->TexImage
);
1002 struct intel_mipmap_tree
*new_mt
;
1003 int width
, height
, depth
;
1005 uint32_t layout_flags
= MIPTREE_LAYOUT_ACCELERATED_UPLOAD
|
1006 MIPTREE_LAYOUT_TILING_ANY
;
1008 intel_get_image_dims(rb
->TexImage
, &width
, &height
, &depth
);
1010 new_mt
= intel_miptree_create(brw
, rb
->TexImage
->TexObject
->Target
,
1011 intel_image
->base
.Base
.TexFormat
,
1012 intel_image
->base
.Base
.Level
,
1013 intel_image
->base
.Base
.Level
,
1014 width
, height
, depth
,
1015 irb
->mt
->num_samples
,
1018 if (intel_miptree_wants_hiz_buffer(brw
, new_mt
)) {
1019 intel_miptree_alloc_hiz(brw
, new_mt
);
1022 intel_miptree_copy_teximage(brw
, intel_image
, new_mt
, invalidate
);
1024 intel_miptree_reference(&irb
->mt
, intel_image
->mt
);
1025 intel_renderbuffer_set_draw_offset(irb
);
1026 intel_miptree_release(&new_mt
);
1030 brw_render_cache_set_clear(struct brw_context
*brw
)
1032 struct set_entry
*entry
;
1034 set_foreach(brw
->render_cache
, entry
) {
1035 _mesa_set_remove(brw
->render_cache
, entry
);
1040 brw_render_cache_set_add_bo(struct brw_context
*brw
, drm_intel_bo
*bo
)
1042 _mesa_set_add(brw
->render_cache
, bo
);
1046 * Emits an appropriate flush for a BO if it has been rendered to within the
1047 * same batchbuffer as a read that's about to be emitted.
1049 * The GPU has separate, incoherent caches for the render cache and the
1050 * sampler cache, along with other caches. Usually data in the different
1051 * caches don't interact (e.g. we don't render to our driver-generated
1052 * immediate constant data), but for render-to-texture in FBOs we definitely
1053 * do. When a batchbuffer is flushed, the kernel will ensure that everything
1054 * necessary is flushed before another use of that BO, but for reuse from
1055 * different caches within a batchbuffer, it's all our responsibility.
1058 brw_render_cache_set_check_flush(struct brw_context
*brw
, drm_intel_bo
*bo
)
1060 if (!_mesa_set_search(brw
->render_cache
, bo
))
1063 if (brw
->gen
>= 6) {
1064 if (brw
->gen
== 6) {
1065 /* [Dev-SNB{W/A}]: Before a PIPE_CONTROL with Write Cache
1066 * Flush Enable = 1, a PIPE_CONTROL with any non-zero
1067 * post-sync-op is required.
1069 brw_emit_post_sync_nonzero_flush(brw
);
1072 brw_emit_pipe_control_flush(brw
,
1073 PIPE_CONTROL_DEPTH_CACHE_FLUSH
|
1074 PIPE_CONTROL_RENDER_TARGET_FLUSH
|
1075 PIPE_CONTROL_CS_STALL
);
1077 brw_emit_pipe_control_flush(brw
,
1078 PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE
|
1079 PIPE_CONTROL_CONST_CACHE_INVALIDATE
);
1081 brw_emit_mi_flush(brw
);
1084 brw_render_cache_set_clear(brw
);
1088 * Do one-time context initializations related to GL_EXT_framebuffer_object.
1089 * Hook in device driver functions.
1092 intel_fbo_init(struct brw_context
*brw
)
1094 struct dd_function_table
*dd
= &brw
->ctx
.Driver
;
1095 dd
->NewRenderbuffer
= intel_new_renderbuffer
;
1096 dd
->MapRenderbuffer
= intel_map_renderbuffer
;
1097 dd
->UnmapRenderbuffer
= intel_unmap_renderbuffer
;
1098 dd
->RenderTexture
= intel_render_texture
;
1099 dd
->ValidateFramebuffer
= intel_validate_framebuffer
;
1101 dd
->BlitFramebuffer
= intel_blit_framebuffer
;
1103 dd
->BlitFramebuffer
= gen4_blit_framebuffer
;
1104 dd
->EGLImageTargetRenderbufferStorage
=
1105 intel_image_target_renderbuffer_storage
;
1107 brw
->render_cache
= _mesa_set_create(brw
, _mesa_hash_pointer
,
1108 _mesa_key_pointer_equal
);