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"
52 #include "brw_defines.h"
54 #define FILE_DEBUG_FLAG DEBUG_FBO
56 /** Called by gl_renderbuffer::Delete() */
58 intel_delete_renderbuffer(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
)
60 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
64 intel_miptree_release(&irb
->mt
);
65 intel_miptree_release(&irb
->singlesample_mt
);
67 _mesa_delete_renderbuffer(ctx
, rb
);
71 * \brief Downsample a winsys renderbuffer from mt to singlesample_mt.
73 * If the miptree needs no downsample, then skip.
76 intel_renderbuffer_downsample(struct brw_context
*brw
,
77 struct intel_renderbuffer
*irb
)
79 if (!irb
->need_downsample
)
81 intel_miptree_updownsample(brw
, irb
->mt
, irb
->singlesample_mt
);
82 irb
->need_downsample
= false;
86 * \brief Upsample a winsys renderbuffer from singlesample_mt to mt.
88 * The upsample is done unconditionally.
91 intel_renderbuffer_upsample(struct brw_context
*brw
,
92 struct intel_renderbuffer
*irb
)
94 assert(!irb
->need_downsample
);
96 intel_miptree_updownsample(brw
, irb
->singlesample_mt
, irb
->mt
);
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 brw_context
*brw
= brw_context(ctx
);
111 struct swrast_renderbuffer
*srb
= (struct swrast_renderbuffer
*)rb
;
112 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
113 struct intel_mipmap_tree
*mt
;
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(brw
);
128 /* The MapRenderbuffer API should always return a single-sampled mapping.
129 * The case we are asked to map multisampled RBs is in glReadPixels() (or
130 * swrast paths like glCopyTexImage()) from a window-system MSAA buffer,
131 * and GL expects an automatic resolve to happen.
133 * If it's a color miptree, there is a ->singlesample_mt which wraps the
134 * actual window system renderbuffer (which we may resolve to at any time),
135 * while the miptree itself is our driver-private allocation. If it's a
136 * depth or stencil miptree, we have a private MSAA buffer and no shared
137 * singlesample buffer, and since we don't expect anybody to ever actually
138 * resolve it, we just make a temporary singlesample buffer now when we
141 if (rb
->NumSamples
> 1) {
142 if (!irb
->singlesample_mt
) {
143 irb
->singlesample_mt
=
144 intel_miptree_create_for_renderbuffer(brw
, irb
->mt
->format
,
145 rb
->Width
, rb
->Height
,
147 if (!irb
->singlesample_mt
)
149 irb
->singlesample_mt_is_tmp
= true;
150 irb
->need_downsample
= true;
153 intel_renderbuffer_downsample(brw
, irb
);
154 mt
= irb
->singlesample_mt
;
156 irb
->need_map_upsample
= mode
& GL_MAP_WRITE_BIT
;
161 /* For a window-system renderbuffer, we need to flip the mapping we receive
162 * upside-down. So we need to ask for a rectangle on flipped vertically, and
163 * we then return a pointer to the bottom of it with a negative stride.
166 y
= rb
->Height
- y
- h
;
169 intel_miptree_map(brw
, mt
, irb
->mt_level
, irb
->mt_layer
,
170 x
, y
, w
, h
, mode
, &map
, &stride
);
173 map
+= (h
- 1) * stride
;
177 DBG("%s: rb %d (%s) mt mapped: (%d, %d) (%dx%d) -> %p/%"PRIdPTR
"\n",
178 __func__
, rb
->Name
, _mesa_get_format_name(rb
->Format
),
179 x
, y
, w
, h
, map
, stride
);
182 *out_stride
= stride
;
191 * \see dd_function_table::UnmapRenderbuffer
194 intel_unmap_renderbuffer(struct gl_context
*ctx
,
195 struct gl_renderbuffer
*rb
)
197 struct brw_context
*brw
= brw_context(ctx
);
198 struct swrast_renderbuffer
*srb
= (struct swrast_renderbuffer
*)rb
;
199 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
200 struct intel_mipmap_tree
*mt
;
202 DBG("%s: rb %d (%s)\n", __func__
,
203 rb
->Name
, _mesa_get_format_name(rb
->Format
));
206 /* this is a malloc'd renderbuffer (accum buffer) */
211 if (rb
->NumSamples
> 1) {
212 mt
= irb
->singlesample_mt
;
217 intel_miptree_unmap(brw
, mt
, irb
->mt_level
, irb
->mt_layer
);
219 if (irb
->need_map_upsample
) {
220 intel_renderbuffer_upsample(brw
, irb
);
221 irb
->need_map_upsample
= false;
224 if (irb
->singlesample_mt_is_tmp
)
225 intel_miptree_release(&irb
->singlesample_mt
);
230 * Round up the requested multisample count to the next supported sample size.
233 intel_quantize_num_samples(struct intel_screen
*intel
, unsigned num_samples
)
235 const int *msaa_modes
= intel_supported_msaa_modes(intel
);
236 int quantized_samples
= 0;
238 for (int i
= 0; msaa_modes
[i
] != -1; ++i
) {
239 if (msaa_modes
[i
] >= num_samples
)
240 quantized_samples
= msaa_modes
[i
];
245 return quantized_samples
;
249 intel_renderbuffer_format(struct gl_context
* ctx
, GLenum internalFormat
)
251 struct brw_context
*brw
= brw_context(ctx
);
253 switch (internalFormat
) {
255 /* Use the same format-choice logic as for textures.
256 * Renderbuffers aren't any different from textures for us,
257 * except they're less useful because you can't texture with
260 return ctx
->Driver
.ChooseTextureFormat(ctx
, GL_TEXTURE_2D
,
264 case GL_STENCIL_INDEX
:
265 case GL_STENCIL_INDEX1_EXT
:
266 case GL_STENCIL_INDEX4_EXT
:
267 case GL_STENCIL_INDEX8_EXT
:
268 case GL_STENCIL_INDEX16_EXT
:
269 /* These aren't actual texture formats, so force them here. */
270 if (brw
->has_separate_stencil
) {
271 return MESA_FORMAT_S_UINT8
;
273 assert(!brw
->must_use_separate_stencil
);
274 return MESA_FORMAT_Z24_UNORM_S8_UINT
;
280 intel_alloc_private_renderbuffer_storage(struct gl_context
* ctx
, struct gl_renderbuffer
*rb
,
281 GLenum internalFormat
,
282 GLuint width
, GLuint height
)
284 struct brw_context
*brw
= brw_context(ctx
);
285 struct intel_screen
*screen
= brw
->screen
;
286 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
288 assert(rb
->Format
!= MESA_FORMAT_NONE
);
290 rb
->NumSamples
= intel_quantize_num_samples(screen
, rb
->NumSamples
);
293 rb
->_BaseFormat
= _mesa_get_format_base_format(rb
->Format
);
295 intel_miptree_release(&irb
->mt
);
297 DBG("%s: %s: %s (%dx%d)\n", __func__
,
298 _mesa_enum_to_string(internalFormat
),
299 _mesa_get_format_name(rb
->Format
), width
, height
);
301 if (width
== 0 || height
== 0)
304 irb
->mt
= intel_miptree_create_for_renderbuffer(brw
, rb
->Format
,
310 irb
->layer_count
= 1;
316 * Called via glRenderbufferStorageEXT() to set the format and allocate
317 * storage for a user-created renderbuffer.
320 intel_alloc_renderbuffer_storage(struct gl_context
* ctx
, struct gl_renderbuffer
*rb
,
321 GLenum internalFormat
,
322 GLuint width
, GLuint height
)
324 rb
->Format
= intel_renderbuffer_format(ctx
, internalFormat
);
325 return intel_alloc_private_renderbuffer_storage(ctx
, rb
, internalFormat
, width
, height
);
329 intel_image_target_renderbuffer_storage(struct gl_context
*ctx
,
330 struct gl_renderbuffer
*rb
,
333 struct brw_context
*brw
= brw_context(ctx
);
334 struct intel_renderbuffer
*irb
;
335 __DRIscreen
*dri_screen
= brw
->screen
->driScrnPriv
;
338 image
= dri_screen
->dri2
.image
->lookupEGLImage(dri_screen
, image_handle
,
339 dri_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 /* Adjust the miptree's upper-left coordinate.
379 * FIXME: Adjusting the miptree's layout outside of
380 * intel_miptree_create_layout() is fragile. Plumb the adjustment through
381 * intel_miptree_create_layout() and brw_tex_layout().
383 irb
->mt
->level
[0].level_x
= image
->tile_x
;
384 irb
->mt
->level
[0].level_y
= image
->tile_y
;
385 irb
->mt
->level
[0].slice
[0].x_offset
= image
->tile_x
;
386 irb
->mt
->level
[0].slice
[0].y_offset
= image
->tile_y
;
387 irb
->mt
->total_width
+= image
->tile_x
;
388 irb
->mt
->total_height
+= image
->tile_y
;
390 rb
->InternalFormat
= image
->internal_format
;
391 rb
->Width
= image
->width
;
392 rb
->Height
= image
->height
;
393 rb
->Format
= image
->format
;
394 rb
->_BaseFormat
= _mesa_get_format_base_format(image
->format
);
395 rb
->NeedsFinishRenderTexture
= true;
396 irb
->layer_count
= 1;
400 * Called by _mesa_resize_framebuffer() for each hardware renderbuffer when a
401 * window system framebuffer is resized.
403 * Any actual buffer reallocations for hardware renderbuffers (which would
404 * have triggered _mesa_resize_framebuffer()) were done by
405 * intel_process_dri2_buffer().
408 intel_alloc_window_storage(struct gl_context
* ctx
, struct gl_renderbuffer
*rb
,
409 GLenum internalFormat
, GLuint width
, GLuint height
)
412 assert(rb
->Name
== 0);
415 rb
->InternalFormat
= internalFormat
;
420 /** Dummy function for gl_renderbuffer::AllocStorage() */
422 intel_nop_alloc_storage(struct gl_context
* ctx
, struct gl_renderbuffer
*rb
,
423 GLenum internalFormat
, GLuint width
, GLuint height
)
426 (void) internalFormat
;
429 _mesa_problem(ctx
, "intel_nop_alloc_storage should never be called.");
434 * Create a new intel_renderbuffer which corresponds to an on-screen window,
435 * not a user-created renderbuffer.
437 * \param num_samples must be quantized.
439 struct intel_renderbuffer
*
440 intel_create_renderbuffer(mesa_format format
, unsigned num_samples
)
442 struct intel_renderbuffer
*irb
;
443 struct gl_renderbuffer
*rb
;
445 GET_CURRENT_CONTEXT(ctx
);
447 irb
= CALLOC_STRUCT(intel_renderbuffer
);
449 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "creating renderbuffer");
453 rb
= &irb
->Base
.Base
;
454 irb
->layer_count
= 1;
456 _mesa_init_renderbuffer(rb
, 0);
457 rb
->ClassID
= INTEL_RB_CLASS
;
458 rb
->_BaseFormat
= _mesa_get_format_base_format(format
);
460 rb
->InternalFormat
= rb
->_BaseFormat
;
461 rb
->NumSamples
= num_samples
;
463 /* intel-specific methods */
464 rb
->Delete
= intel_delete_renderbuffer
;
465 rb
->AllocStorage
= intel_alloc_window_storage
;
471 * Private window-system buffers (as opposed to ones shared with the display
472 * server created with intel_create_renderbuffer()) are most similar in their
473 * handling to user-created renderbuffers, but they have a resize handler that
474 * may be called at intel_update_renderbuffers() time.
476 * \param num_samples must be quantized.
478 struct intel_renderbuffer
*
479 intel_create_private_renderbuffer(mesa_format format
, unsigned num_samples
)
481 struct intel_renderbuffer
*irb
;
483 irb
= intel_create_renderbuffer(format
, num_samples
);
484 irb
->Base
.Base
.AllocStorage
= intel_alloc_private_renderbuffer_storage
;
490 * Create a new renderbuffer object.
491 * Typically called via glBindRenderbufferEXT().
493 static struct gl_renderbuffer
*
494 intel_new_renderbuffer(struct gl_context
* ctx
, GLuint name
)
496 struct intel_renderbuffer
*irb
;
497 struct gl_renderbuffer
*rb
;
499 irb
= CALLOC_STRUCT(intel_renderbuffer
);
501 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "creating renderbuffer");
505 rb
= &irb
->Base
.Base
;
507 _mesa_init_renderbuffer(rb
, name
);
508 rb
->ClassID
= INTEL_RB_CLASS
;
510 /* intel-specific methods */
511 rb
->Delete
= intel_delete_renderbuffer
;
512 rb
->AllocStorage
= intel_alloc_renderbuffer_storage
;
513 /* span routines set in alloc_storage function */
519 intel_renderbuffer_update_wrapper(struct brw_context
*brw
,
520 struct intel_renderbuffer
*irb
,
521 struct gl_texture_image
*image
,
525 struct gl_renderbuffer
*rb
= &irb
->Base
.Base
;
526 struct intel_texture_image
*intel_image
= intel_texture_image(image
);
527 struct intel_mipmap_tree
*mt
= intel_image
->mt
;
528 int level
= image
->Level
;
530 rb
->AllocStorage
= intel_nop_alloc_storage
;
532 /* adjust for texture view parameters */
533 layer
+= image
->TexObject
->MinLayer
;
534 level
+= image
->TexObject
->MinLevel
;
536 intel_miptree_check_level_layer(mt
, level
, layer
);
537 irb
->mt_level
= level
;
539 int layer_multiplier
;
540 switch (mt
->msaa_layout
) {
541 case INTEL_MSAA_LAYOUT_UMS
:
542 case INTEL_MSAA_LAYOUT_CMS
:
543 layer_multiplier
= mt
->num_samples
;
547 layer_multiplier
= 1;
550 irb
->mt_layer
= layer_multiplier
* layer
;
553 irb
->layer_count
= 1;
554 } else if (mt
->target
!= GL_TEXTURE_3D
&& image
->TexObject
->NumLayers
> 0) {
555 irb
->layer_count
= image
->TexObject
->NumLayers
;
557 irb
->layer_count
= mt
->level
[level
].depth
/ layer_multiplier
;
560 intel_miptree_reference(&irb
->mt
, mt
);
562 intel_renderbuffer_set_draw_offset(irb
);
564 if (intel_miptree_wants_hiz_buffer(brw
, mt
)) {
565 intel_miptree_alloc_hiz(brw
, mt
);
574 intel_renderbuffer_set_draw_offset(struct intel_renderbuffer
*irb
)
576 unsigned int dst_x
, dst_y
;
578 /* compute offset of the particular 2D image within the texture region */
579 intel_miptree_get_image_offset(irb
->mt
,
589 * Called by glFramebufferTexture[123]DEXT() (and other places) to
590 * prepare for rendering into texture memory. This might be called
591 * many times to choose different texture levels, cube faces, etc
592 * before intel_finish_render_texture() is ever called.
595 intel_render_texture(struct gl_context
* ctx
,
596 struct gl_framebuffer
*fb
,
597 struct gl_renderbuffer_attachment
*att
)
599 struct brw_context
*brw
= brw_context(ctx
);
600 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
601 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
602 struct gl_texture_image
*image
= rb
->TexImage
;
603 struct intel_texture_image
*intel_image
= intel_texture_image(image
);
604 struct intel_mipmap_tree
*mt
= intel_image
->mt
;
609 if (att
->CubeMapFace
> 0) {
610 assert(att
->Zoffset
== 0);
611 layer
= att
->CubeMapFace
;
613 layer
= att
->Zoffset
;
616 if (!intel_image
->mt
) {
617 /* Fallback on drawing to a texture that doesn't have a miptree
618 * (has a border, width/height 0, etc.)
620 _swrast_render_texture(ctx
, fb
, att
);
624 intel_miptree_check_level_layer(mt
, att
->TextureLevel
, layer
);
626 if (!intel_renderbuffer_update_wrapper(brw
, irb
, image
, layer
, att
->Layered
)) {
627 _swrast_render_texture(ctx
, fb
, att
);
631 DBG("Begin render %s texture tex=%u w=%d h=%d d=%d refcount=%d\n",
632 _mesa_get_format_name(image
->TexFormat
),
633 att
->Texture
->Name
, image
->Width
, image
->Height
, image
->Depth
,
638 #define fbo_incomplete(fb, ...) do { \
639 static GLuint msg_id = 0; \
640 if (unlikely(ctx->Const.ContextFlags & GL_CONTEXT_FLAG_DEBUG_BIT)) { \
641 _mesa_gl_debug(ctx, &msg_id, \
642 MESA_DEBUG_SOURCE_API, \
643 MESA_DEBUG_TYPE_OTHER, \
644 MESA_DEBUG_SEVERITY_MEDIUM, \
648 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED; \
652 * Do additional "completeness" testing of a framebuffer object.
655 intel_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
657 struct brw_context
*brw
= brw_context(ctx
);
658 struct intel_renderbuffer
*depthRb
=
659 intel_get_renderbuffer(fb
, BUFFER_DEPTH
);
660 struct intel_renderbuffer
*stencilRb
=
661 intel_get_renderbuffer(fb
, BUFFER_STENCIL
);
662 struct intel_mipmap_tree
*depth_mt
= NULL
, *stencil_mt
= NULL
;
665 DBG("%s() on fb %p (%s)\n", __func__
,
666 fb
, (fb
== ctx
->DrawBuffer
? "drawbuffer" :
667 (fb
== ctx
->ReadBuffer
? "readbuffer" : "other buffer")));
670 depth_mt
= depthRb
->mt
;
672 stencil_mt
= stencilRb
->mt
;
673 if (stencil_mt
->stencil_mt
)
674 stencil_mt
= stencil_mt
->stencil_mt
;
677 if (depth_mt
&& stencil_mt
) {
679 /* For gen >= 6, we are using the lod/minimum-array-element fields
680 * and supporting layered rendering. This means that we must restrict
681 * the depth & stencil attachments to match in various more retrictive
682 * ways. (width, height, depth, LOD and layer)
684 if (depth_mt
->physical_width0
!= stencil_mt
->physical_width0
||
685 depth_mt
->physical_height0
!= stencil_mt
->physical_height0
||
686 depth_mt
->physical_depth0
!= stencil_mt
->physical_depth0
||
687 depthRb
->mt_level
!= stencilRb
->mt_level
||
688 depthRb
->mt_layer
!= stencilRb
->mt_layer
) {
690 "FBO incomplete: depth and stencil must match in"
691 "width, height, depth, LOD and layer\n");
694 if (depth_mt
== stencil_mt
) {
695 /* For true packed depth/stencil (not faked on prefers-separate-stencil
696 * hardware) we need to be sure they're the same level/layer, since
697 * we'll be emitting a single packet describing the packed setup.
699 if (depthRb
->mt_level
!= stencilRb
->mt_level
||
700 depthRb
->mt_layer
!= stencilRb
->mt_layer
) {
702 "FBO incomplete: depth image level/layer %d/%d != "
703 "stencil image %d/%d\n",
707 stencilRb
->mt_layer
);
710 if (!brw
->has_separate_stencil
) {
711 fbo_incomplete(fb
, "FBO incomplete: separate stencil "
714 if (stencil_mt
->format
!= MESA_FORMAT_S_UINT8
) {
715 fbo_incomplete(fb
, "FBO incomplete: separate stencil is %s "
717 _mesa_get_format_name(stencil_mt
->format
));
719 if (brw
->gen
< 7 && !intel_renderbuffer_has_hiz(depthRb
)) {
720 /* Before Gen7, separate depth and stencil buffers can be used
721 * only if HiZ is enabled. From the Sandybridge PRM, Volume 2,
722 * Part 1, Bit 3DSTATE_DEPTH_BUFFER.SeparateStencilBufferEnable:
723 * [DevSNB]: This field must be set to the same value (enabled
724 * or disabled) as Hierarchical Depth Buffer Enable.
726 fbo_incomplete(fb
, "FBO incomplete: separate stencil "
732 for (i
= 0; i
< ARRAY_SIZE(fb
->Attachment
); i
++) {
733 struct gl_renderbuffer
*rb
;
734 struct intel_renderbuffer
*irb
;
736 if (fb
->Attachment
[i
].Type
== GL_NONE
)
739 /* A supported attachment will have a Renderbuffer set either
740 * from being a Renderbuffer or being a texture that got the
741 * intel_wrap_texture() treatment.
743 rb
= fb
->Attachment
[i
].Renderbuffer
;
745 fbo_incomplete(fb
, "FBO incomplete: attachment without "
750 if (fb
->Attachment
[i
].Type
== GL_TEXTURE
) {
751 if (rb
->TexImage
->Border
) {
752 fbo_incomplete(fb
, "FBO incomplete: texture with border\n");
757 irb
= intel_renderbuffer(rb
);
759 fbo_incomplete(fb
, "FBO incomplete: software rendering "
764 if (!brw_render_target_supported(brw
, rb
)) {
765 fbo_incomplete(fb
, "FBO incomplete: Unsupported HW "
766 "texture/renderbuffer format attached: %s\n",
767 _mesa_get_format_name(intel_rb_format(irb
)));
773 * Try to do a glBlitFramebuffer using glCopyTexSubImage2D
774 * We can do this when the dst renderbuffer is actually a texture and
775 * there is no scaling, mirroring or scissoring.
777 * \return new buffer mask indicating the buffers left to blit using the
781 intel_blit_framebuffer_with_blitter(struct gl_context
*ctx
,
782 const struct gl_framebuffer
*readFb
,
783 const struct gl_framebuffer
*drawFb
,
784 GLint srcX0
, GLint srcY0
,
785 GLint srcX1
, GLint srcY1
,
786 GLint dstX0
, GLint dstY0
,
787 GLint dstX1
, GLint dstY1
,
790 struct brw_context
*brw
= brw_context(ctx
);
792 /* Sync up the state of window system buffers. We need to do this before
793 * we go looking for the buffers.
795 intel_prepare_render(brw
);
797 if (mask
& GL_COLOR_BUFFER_BIT
) {
799 struct gl_renderbuffer
*src_rb
= readFb
->_ColorReadBuffer
;
800 struct intel_renderbuffer
*src_irb
= intel_renderbuffer(src_rb
);
803 perf_debug("glBlitFramebuffer(): missing src renderbuffer. "
804 "Falling back to software rendering.\n");
808 /* If the source and destination are the same size with no mirroring,
809 * the rectangles are within the size of the texture and there is no
810 * scissor, then we can probably use the blit engine.
812 if (!(srcX0
- srcX1
== dstX0
- dstX1
&&
813 srcY0
- srcY1
== dstY0
- dstY1
&&
816 srcX0
>= 0 && srcX1
<= readFb
->Width
&&
817 srcY0
>= 0 && srcY1
<= readFb
->Height
&&
818 dstX0
>= 0 && dstX1
<= drawFb
->Width
&&
819 dstY0
>= 0 && dstY1
<= drawFb
->Height
&&
820 !(ctx
->Scissor
.EnableFlags
))) {
821 perf_debug("glBlitFramebuffer(): non-1:1 blit. "
822 "Falling back to software rendering.\n");
826 /* Blit to all active draw buffers. We don't do any pre-checking,
827 * because we assume that copying to MRTs is rare, and failure midway
828 * through copying is even more rare. Even if it was to occur, it's
829 * safe to let meta start the copy over from scratch, because
830 * glBlitFramebuffer completely overwrites the destination pixels, and
831 * results are undefined if any destination pixels have a dependency on
834 for (i
= 0; i
< drawFb
->_NumColorDrawBuffers
; i
++) {
835 struct gl_renderbuffer
*dst_rb
= drawFb
->_ColorDrawBuffers
[i
];
836 struct intel_renderbuffer
*dst_irb
= intel_renderbuffer(dst_rb
);
839 perf_debug("glBlitFramebuffer(): missing dst renderbuffer. "
840 "Falling back to software rendering.\n");
844 if (ctx
->Color
.sRGBEnabled
&&
845 _mesa_get_format_color_encoding(src_irb
->mt
->format
) !=
846 _mesa_get_format_color_encoding(dst_irb
->mt
->format
)) {
847 perf_debug("glBlitFramebuffer() with sRGB conversion cannot be "
848 "handled by BLT path.\n");
852 if (!intel_miptree_blit(brw
,
854 src_irb
->mt_level
, src_irb
->mt_layer
,
855 srcX0
, srcY0
, src_rb
->Name
== 0,
857 dst_irb
->mt_level
, dst_irb
->mt_layer
,
858 dstX0
, dstY0
, dst_rb
->Name
== 0,
859 dstX1
- dstX0
, dstY1
- dstY0
, GL_COPY
)) {
860 perf_debug("glBlitFramebuffer(): unknown blit failure. "
861 "Falling back to software rendering.\n");
866 mask
&= ~GL_COLOR_BUFFER_BIT
;
873 intel_blit_framebuffer(struct gl_context
*ctx
,
874 struct gl_framebuffer
*readFb
,
875 struct gl_framebuffer
*drawFb
,
876 GLint srcX0
, GLint srcY0
, GLint srcX1
, GLint srcY1
,
877 GLint dstX0
, GLint dstY0
, GLint dstX1
, GLint dstY1
,
878 GLbitfield mask
, GLenum filter
)
880 struct brw_context
*brw
= brw_context(ctx
);
882 /* Page 679 of OpenGL 4.4 spec says:
883 * "Added BlitFramebuffer to commands affected by conditional rendering in
884 * section 10.10 (Bug 9562)."
886 if (!_mesa_check_conditional_render(ctx
))
889 mask
= brw_blorp_framebuffer(brw
, readFb
, drawFb
,
890 srcX0
, srcY0
, srcX1
, srcY1
,
891 dstX0
, dstY0
, dstX1
, dstY1
,
896 mask
= _mesa_meta_BlitFramebuffer(ctx
, readFb
, drawFb
,
897 srcX0
, srcY0
, srcX1
, srcY1
,
898 dstX0
, dstY0
, dstX1
, dstY1
,
903 if (brw
->gen
>= 8 && (mask
& GL_STENCIL_BUFFER_BIT
)) {
904 assert(!"Invalid blit");
907 /* Try using the BLT engine. */
908 mask
= intel_blit_framebuffer_with_blitter(ctx
, readFb
, drawFb
,
909 srcX0
, srcY0
, srcX1
, srcY1
,
910 dstX0
, dstY0
, dstX1
, dstY1
,
915 _swrast_BlitFramebuffer(ctx
, readFb
, drawFb
,
916 srcX0
, srcY0
, srcX1
, srcY1
,
917 dstX0
, dstY0
, dstX1
, dstY1
,
922 * Gen4-5 implementation of glBlitFrameBuffer().
924 * Tries BLT, Meta, then swrast.
926 * Gen4-5 have a single ring for both 3D and BLT operations, so there's no
927 * inter-ring synchronization issues like on Gen6+. It is apparently faster
928 * than using the 3D pipeline. Original Gen4 also has to rebase and copy
929 * miptree slices in order to render to unaligned locations.
932 gen4_blit_framebuffer(struct gl_context
*ctx
,
933 struct gl_framebuffer
*readFb
,
934 struct gl_framebuffer
*drawFb
,
935 GLint srcX0
, GLint srcY0
, GLint srcX1
, GLint srcY1
,
936 GLint dstX0
, GLint dstY0
, GLint dstX1
, GLint dstY1
,
937 GLbitfield mask
, GLenum filter
)
939 /* Page 679 of OpenGL 4.4 spec says:
940 * "Added BlitFramebuffer to commands affected by conditional rendering in
941 * section 10.10 (Bug 9562)."
943 if (!_mesa_check_conditional_render(ctx
))
946 mask
= intel_blit_framebuffer_with_blitter(ctx
, readFb
, drawFb
,
947 srcX0
, srcY0
, srcX1
, srcY1
,
948 dstX0
, dstY0
, dstX1
, dstY1
,
953 mask
= _mesa_meta_BlitFramebuffer(ctx
, readFb
, drawFb
,
954 srcX0
, srcY0
, srcX1
, srcY1
,
955 dstX0
, dstY0
, dstX1
, dstY1
,
960 _swrast_BlitFramebuffer(ctx
, readFb
, drawFb
,
961 srcX0
, srcY0
, srcX1
, srcY1
,
962 dstX0
, dstY0
, dstX1
, dstY1
,
967 * Does the renderbuffer have hiz enabled?
970 intel_renderbuffer_has_hiz(struct intel_renderbuffer
*irb
)
972 return intel_miptree_level_has_hiz(irb
->mt
, irb
->mt_level
);
976 intel_renderbuffer_resolve_hiz(struct brw_context
*brw
,
977 struct intel_renderbuffer
*irb
)
980 return intel_miptree_slice_resolve_hiz(brw
,
989 intel_renderbuffer_att_set_needs_depth_resolve(struct gl_renderbuffer_attachment
*att
)
991 struct intel_renderbuffer
*irb
= intel_renderbuffer(att
->Renderbuffer
);
994 intel_miptree_set_all_slices_need_depth_resolve(irb
->mt
, irb
->mt_level
);
996 intel_miptree_slice_set_needs_depth_resolve(irb
->mt
,
1004 intel_renderbuffer_resolve_depth(struct brw_context
*brw
,
1005 struct intel_renderbuffer
*irb
)
1008 return intel_miptree_slice_resolve_depth(brw
,
1017 intel_renderbuffer_move_to_temp(struct brw_context
*brw
,
1018 struct intel_renderbuffer
*irb
,
1021 struct gl_renderbuffer
*rb
=&irb
->Base
.Base
;
1022 struct intel_texture_image
*intel_image
= intel_texture_image(rb
->TexImage
);
1023 struct intel_mipmap_tree
*new_mt
;
1024 int width
, height
, depth
;
1026 uint32_t layout_flags
= MIPTREE_LAYOUT_ACCELERATED_UPLOAD
|
1027 MIPTREE_LAYOUT_TILING_ANY
;
1029 intel_get_image_dims(rb
->TexImage
, &width
, &height
, &depth
);
1031 new_mt
= intel_miptree_create(brw
, rb
->TexImage
->TexObject
->Target
,
1032 intel_image
->base
.Base
.TexFormat
,
1033 intel_image
->base
.Base
.Level
,
1034 intel_image
->base
.Base
.Level
,
1035 width
, height
, depth
,
1036 irb
->mt
->num_samples
,
1039 if (intel_miptree_wants_hiz_buffer(brw
, new_mt
)) {
1040 intel_miptree_alloc_hiz(brw
, new_mt
);
1043 intel_miptree_copy_teximage(brw
, intel_image
, new_mt
, invalidate
);
1045 intel_miptree_reference(&irb
->mt
, intel_image
->mt
);
1046 intel_renderbuffer_set_draw_offset(irb
);
1047 intel_miptree_release(&new_mt
);
1051 brw_render_cache_set_clear(struct brw_context
*brw
)
1053 struct set_entry
*entry
;
1055 set_foreach(brw
->render_cache
, entry
) {
1056 _mesa_set_remove(brw
->render_cache
, entry
);
1061 brw_render_cache_set_add_bo(struct brw_context
*brw
, drm_intel_bo
*bo
)
1063 _mesa_set_add(brw
->render_cache
, bo
);
1067 * Emits an appropriate flush for a BO if it has been rendered to within the
1068 * same batchbuffer as a read that's about to be emitted.
1070 * The GPU has separate, incoherent caches for the render cache and the
1071 * sampler cache, along with other caches. Usually data in the different
1072 * caches don't interact (e.g. we don't render to our driver-generated
1073 * immediate constant data), but for render-to-texture in FBOs we definitely
1074 * do. When a batchbuffer is flushed, the kernel will ensure that everything
1075 * necessary is flushed before another use of that BO, but for reuse from
1076 * different caches within a batchbuffer, it's all our responsibility.
1079 brw_render_cache_set_check_flush(struct brw_context
*brw
, drm_intel_bo
*bo
)
1081 if (!_mesa_set_search(brw
->render_cache
, bo
))
1084 if (brw
->gen
>= 6) {
1085 brw_emit_pipe_control_flush(brw
,
1086 PIPE_CONTROL_DEPTH_CACHE_FLUSH
|
1087 PIPE_CONTROL_RENDER_TARGET_FLUSH
|
1088 PIPE_CONTROL_CS_STALL
);
1090 brw_emit_pipe_control_flush(brw
,
1091 PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE
|
1092 PIPE_CONTROL_CONST_CACHE_INVALIDATE
);
1094 brw_emit_mi_flush(brw
);
1097 brw_render_cache_set_clear(brw
);
1101 * Do one-time context initializations related to GL_EXT_framebuffer_object.
1102 * Hook in device driver functions.
1105 intel_fbo_init(struct brw_context
*brw
)
1107 struct dd_function_table
*dd
= &brw
->ctx
.Driver
;
1108 dd
->NewRenderbuffer
= intel_new_renderbuffer
;
1109 dd
->MapRenderbuffer
= intel_map_renderbuffer
;
1110 dd
->UnmapRenderbuffer
= intel_unmap_renderbuffer
;
1111 dd
->RenderTexture
= intel_render_texture
;
1112 dd
->ValidateFramebuffer
= intel_validate_framebuffer
;
1114 dd
->BlitFramebuffer
= intel_blit_framebuffer
;
1116 dd
->BlitFramebuffer
= gen4_blit_framebuffer
;
1117 dd
->EGLImageTargetRenderbufferStorage
=
1118 intel_image_target_renderbuffer_storage
;
1120 brw
->render_cache
= _mesa_set_create(brw
, _mesa_hash_pointer
,
1121 _mesa_key_pointer_equal
);