Commit Graph

4567 Commits

Author SHA1 Message Date
ReinUsesLisp
bc8d3b8f82 gl_device: Enable NV_vertex_buffer_unified_memory on Turing devices
Once we make sure not to corrupt Nvidia's driver, we can safely use
resident buffers on Turing devices.

See GitHub pull request #4156
2020-06-25 01:28:47 -03:00
bunnei
0e1268e507
Merge pull request #4105 from ReinUsesLisp/resident-buffers
gl_rasterizer: Use NV_vertex_buffer_unified_memory for vertex buffer robustness
2020-06-24 11:40:30 -04:00
bunnei
2f2df9a4a7
Merge pull request #4083 from Morph1984/B10G11R11F
decode/image: Implement B10G11R11F
2020-06-24 11:02:38 -04:00
Fernando Sahmkow
32343d820d
Merge pull request #4046 from ogniK5377/macro-hle-prod
Add support for HLEing Macros
2020-06-24 09:01:00 -04:00
ReinUsesLisp
32a2dcd415 buffer_cache: Use buffer methods instead of cache virtual methods 2020-06-24 02:36:14 -03:00
ReinUsesLisp
39c97f1b65 gl_stream_buffer: Use InvalidateBufferData instead unmap and map
Making the stream buffer resident increases GPU usage significantly on
some games. This seems to be addressed invalidating the stream buffer
with InvalidateBufferData instead of using a Unmap + Map (with
invalidation flags).
2020-06-24 02:36:14 -03:00
ReinUsesLisp
41a4090320 gl_rasterizer: Use NV_vertex_buffer_unified_memory for vertex buffer robustness
Switch games are allowed to bind less data than what they use in a
vertex buffer, the expected behavior here is that these values are read
as zero. At the moment of writing this only D3D12, OpenGL and NVN through
NV_vertex_buffer_unified_memory support vertex buffer with a size limit.

In theory this could be emulated on Vulkan creating a new VkBuffer for
each (handle, offset, length) tuple and binding the expected data to it.
This is likely going to be slow and memory expensive when used on the
vertex buffer and we have to do it on all draws because we can't know
without analyzing indices when a game is going to read vertex data out
of bounds.

This is not a problem on OpenGL's BufferAddressRangeNV because it takes
a length parameter, unlike Vulkan's CmdBindVertexBuffers that only takes
buffers and offsets (the length is implicit in VkBuffer). It isn't a
problem on D3D12 either, because D3D12_VERTEX_BUFFER_VIEW on
IASetVertexBuffers takes SizeInBytes as a parameter (although I am not
familiar with robustness on D3D12).

Currently this only implements buffer ranges for vertex buffers,
although indices can also be affected. A KHR_robustness profile is not
created, but Nvidia's driver reads out of bound vertex data as zero
anyway, this might have to be changed in the future.

- Fixes SMO random triangles when capturing an enemy, getting hit, or
looking at the environment on certain maps.
2020-06-24 02:36:14 -03:00
ReinUsesLisp
32485917ba gl_buffer_cache: Mark buffers as resident
Make stream buffer and cached buffers as resident and query their
address. This allows us to use GPU addresses for several proprietary
Nvidia extensions.
2020-06-24 02:36:14 -03:00
ReinUsesLisp
73fb3a304b gl_device: Expose NV_vertex_buffer_unified_memory except on Turing
Expose NV_vertex_buffer_unified_memory when the driver supports it.

This commit adds a function the determine if a GL_RENDERER is a Turing
GPU. This is required because on Turing GPUs Nvidia's driver crashes
when the buffer is marked as resident or on DeleteBuffers. Without a
synchronous debug output (single threaded driver), it's likely that
the driver will crash in the first blocking call.
2020-06-24 02:36:14 -03:00
ReinUsesLisp
00c66a7289 gl_stream_buffer: Always use a non-coherent buffer 2020-06-24 02:35:33 -03:00
ReinUsesLisp
da79ec9565 gl_stream_buffer: Always use persistent memory maps
yuzu no longer supports platforms without persistent maps.
2020-06-24 02:35:33 -03:00
Rodrigo Locatti
b66ccaa376
Merge pull request #4129 from Morph1984/texture-shadow-lod-workaround
gl_shader_decompiler: Workaround textureLod when GL_EXT_texture_shadow_lod is not available
2020-06-24 01:51:15 -03:00
David Marcec
f5e2aec422 addressed issues 2020-06-24 12:18:33 +10:00
David Marcec
52340e94ac clear mme draw mode
We already draw, so we can clear it
2020-06-24 12:09:04 +10:00
David Marcec
fabdf5d385 Addressed issues 2020-06-24 12:09:03 +10:00
David Marcec
74b4334d51 Fix constbuffer for 0217920100488FF7 2020-06-24 12:09:02 +10:00
David Marcec
6ce5f3120b Macro HLE support 2020-06-24 12:09:01 +10:00
ReinUsesLisp
9f54cd4dad gl_shader_cache: Avoid use after move for program size
All programs had a size of zero due to this bug, skipping invalidations.

While we are at it, remove some unused forward declarations.
2020-06-23 22:54:42 -03:00
bunnei
15aeae3dd3
Merge pull request #4127 from lioncash/dst-typo
texture_cache: Fix incorrect address used in a DeduceSurface() call
2020-06-23 15:59:37 -04:00
ReinUsesLisp
39ab33ee1c shader/half_set: Implement HSET2_IMM
Add HSET2_IMM. Due to the complexity of the encoding avoid using
BitField unions and read the relevant bits from the code itself.
This is less error prone.
2020-06-22 20:51:18 -03:00
Fernando Sahmkow
544b15e8e4 TextureCache: Fix case where layer goes off bound.
The returned layer is expected to be between 0 and the depth of the
surface, anything larger is off bounds.
2020-06-22 11:37:40 -04:00
Rodrigo Locatti
406d298457
Merge pull request #4110 from ReinUsesLisp/direct-upload-sets
vk_update_descriptor: Upload descriptor sets data directly
2020-06-22 05:02:13 -03:00
ReinUsesLisp
2f09c7ddd3 renderer_vulkan: Update validation layer name and test before enabling
Update validation layer string to VK_LAYER_KHRONOS_validation.

While we are at it, properly check for available validation layers
before enabling them.
2020-06-22 04:10:45 -03:00
bunnei
14a1181a97
Merge pull request #4122 from lioncash/hide
video_core: Eliminate some variable shadowing
2020-06-21 22:38:04 -04:00
bunnei
c27c76ed43
Merge pull request #4126 from lioncash/noexcept
vulkan/wrapper: Remove noexcept from GetSurfaceCapabilitiesKHR()
2020-06-21 22:36:14 -04:00
Morph
f77c897b8d gl_shader_decompiler: Enable GL_EXT_texture_shadow_lod if available
Enable GL_EXT_texture_shadow_lod if available. If this extension is not available, such as on Intel/AMD proprietary drivers, use textureGrad as a workaround.
2020-06-20 23:02:29 -04:00
Morph
1e65da971b gl_device: Check for GL_EXT_texture_shadow_lod 2020-06-20 22:14:32 -04:00
bunnei
f98bf1025f
Merge pull request #4120 from lioncash/arb
gl_arb_decompiler: Avoid several string copies
2020-06-20 22:11:49 -04:00
MerryMage
c12eb814b4 macro_jit_x64: Use ecx for shift register
shl/shr only accept cl as their second argument
2020-06-20 22:24:05 +01:00
Lioncash
ef53b2fd08 texture_cache: Fix incorrect address used in a DeduceSurface() call
Previously the source was being deduced twice in a row.
2020-06-20 14:11:28 -04:00
merry
928e9c09aa
Merge pull request #4125 from lioncash/macro-shift
macro_jit_x64: Amend readability of Compile_ExtractShiftLeftRegister()
2020-06-20 16:08:23 +01:00
merry
2bd903e021
Merge pull request #4123 from lioncash/unused-var
macro_jit_x64: Remove unused variable
2020-06-20 16:07:58 +01:00
Morph
480e1fa987 decode/image: Implement B10G11R11F
- Used by Kirby Star Allies
2020-06-20 00:28:30 -04:00
bunnei
7d1dca4c98
Merge pull request #4099 from MerryMage/macOS-build
Fix compilation on macOS
2020-06-19 23:31:04 -04:00
Lioncash
5865a10885 gl_arb_decompiler: Avoid several string copies
Variables that are marked as const cannot have the move constructor
invoked when returning from a function (the move constructor requires a
non-const variable so it can "steal" the resources from it.
2020-06-19 23:09:16 -04:00
Lioncash
a6e5b84d1f vulkan/wrapper: Remove noexcept from GetSurfaceCapabilitiesKHR()
Check() can throw an exception if the Vulkan result isn't successful.

We remove the check so that std::terminate isn't outright called and
allows for better debugging (should it ever actually fail).
2020-06-19 23:01:59 -04:00
Lioncash
5a4e89b901 macro_jit_x64: Correct readability of Compile_ExtractShiftLeftImmediate()
Previously dst wasn't being used.
2020-06-19 22:57:23 -04:00
Lioncash
140f953b6a macro_jit_x64: Correct readability of Compile_ExtractShiftLeftRegister()
Previously dst wasn't being used.
2020-06-19 22:56:55 -04:00
Lioncash
8ea749c1ca macro_jit_x64: Remove unused variable
Removes a completely unused label and marks another variable as unused,
given it seems like it has potential uses in the future.
2020-06-19 22:10:45 -04:00
Lioncash
479605b3e5 memory_manager: Eliminate variable shadowing
Renames some variables to prevent ones in inner scopes from shadowing
outer-scoped variables.

The Copy* functions have no shadowing, but we rename them anyways to
remain consistent with the other functions.
2020-06-19 22:02:58 -04:00
Lioncash
811bff009e macro_jit_x64: Eliminate variable shadowing in Compile_ProcessResult()
We can reduce the capture scope so that it's not possible for both "reg"
variables to clash with one another.

While we're at it, we can prevent unnecessary copies while we're at it.
2020-06-19 21:57:44 -04:00
Lioncash
4514b80b3e buffer_cache: Eliminate local variable shadowing
We can just make use of the instance in the scope above this one.
2020-06-19 21:55:02 -04:00
bunnei
7daea551c0
Merge pull request #4087 from MerryMage/macrojit-inline-Read
macro_jit_x64: Inline Engines::Maxwell3D::GetRegisterValue
2020-06-19 21:32:07 -04:00
MerryMage
977ceb4056 macro_jit_x64: Remove unused function Read 2020-06-19 11:39:41 +01:00
bunnei
5a092fb61e
Merge pull request #4090 from MerryMage/macrojit-bugs
macro_jit_x64: Optimization correctness
2020-06-18 22:28:17 -04:00
ReinUsesLisp
cf137ea40b vk_rasterizer: Don't preserve contents on full screen clears
There's no need to load contents from the CPU when a clear resets all
the contents of the underlying memory. This is already implemented on
OpenGL and the texture cache.
2020-06-18 18:18:33 -03:00
ReinUsesLisp
7d763f060e vk_update_descriptor: Upload descriptor sets data directly
Instead of copying to a temporary payload before sending the update task
to the worker thread, insert elements to the payload directly.
2020-06-18 17:47:19 -03:00
MerryMage
69f38355ed vk_rasterizer: BindTransformFeedbackBuffersEXT accepts a size of type VkDeviceSize 2020-06-18 15:47:44 +01:00
MerryMage
b1eada6079 renderer_vulkan: Fix macOS GetBundleDirectory reference 2020-06-18 15:47:44 +01:00
MerryMage
442e48ef4c memory_util: boost hashes are size_t
* boost::hash_value returns a size_t
* boost::hash_combine takes a size_t& argument
2020-06-18 15:47:43 +01:00
MerryMage
8ae7154541 Rename PAGE_SHIFT to PAGE_BITS
macOS header files #define PAGE_SHIFT
2020-06-18 15:47:43 +01:00
Morph
2f420618ea vk_sampler_cache: Emulate GL_LINEAR/NEAREST minification filters
Emulate GL_LINEAR/NEAREST minification filters using minLod = 0 and maxLod = 0.25 during sampler creation
2020-06-18 04:56:31 -04:00
Morph
be660e7749 maxwell_to_vk: Reorder filter cases and correct mipmap_filter=None
maxwell_to_vk: Reorder filtering modes to start with None, then Nearest, then Linear.
maxwell_to_vk: Logs filter modes under UNREACHABLE_MSG instead of UNIMPLEMENTED_MSG, since any unknown filter modes are invalid and not unimplemented.
maxwell_to_vk: Return VK_SAMPLER_MIPMAP_MODE_NEAREST instead of VK_SAMPLER_MIPMAP_MODE_LINEAR when mipmap_filter is None with the description from the VkSamplerCreateInfo(3) man page.
2020-06-18 04:56:31 -04:00
Morph
8868fb745f maxwell_to_gl: Miscellaneous changes
maxwell_to_gl: Log unimplemented features under UNIMPLEMENTED_MSG instead of LOG_ERROR to bring into parity with maxwell_to_vk
maxwell_to_gl: Deduplicate logging in VertexType(), merging them into one.

maxwell_to_gl: Return GL_NEAREST instead of GL_LINEAR if an unknown texture filter mode is encountered.
maxwell_to_gl: Log the mipmap filter mode if an unknown value is passed in.
maxwell_to_gl: Reorder filtering modes to start with None, then Nearest, then Linear.
2020-06-18 04:56:31 -04:00
Rodrigo Locatti
edb2114bac
Merge pull request #4092 from Morph1984/image-bindings
gl_device: Reserve 4 image bindings for fragment stage
2020-06-18 04:59:48 -03:00
MerryMage
44f10d9b9f macro_jit_x64: Inline Engines::Maxwell3D::GetRegisterValue 2020-06-17 17:17:08 +01:00
bunnei
a8ac99b619
Merge pull request #4086 from MerryMage/abi
xbyak_abi: Cleanup
2020-06-17 11:20:52 -04:00
MerryMage
c409722435 macro_jit_x64: Optimization implicitly assumes same destination 2020-06-17 10:36:36 +01:00
MerryMage
a6ddd7c382 macro_jit_x64: Should not skip zero registers for certain ALU ops
The code generated for these ALU ops assume src_a and src_b are always valid.
2020-06-17 10:36:34 +01:00
bunnei
b660ef6c8a
Merge pull request #4089 from MerryMage/macrojit-cleanup-1
macro_jit_x64: Cleanup
2020-06-16 23:44:48 -04:00
bunnei
798ec003ce
Merge pull request #4041 from ReinUsesLisp/arb-decomp
gl_arb_decompiler: Implement an assembly shader decompiler
2020-06-16 14:56:23 -04:00
Morph
e2f5d16540 gl_device: Reserve at least 4 image bindings for fragment stage
Due to the limitation of GL_MAX_IMAGE_UNITS being low (8) on Intel's and Nvidia's proprietary drivers, we have to reserve an appropriate amount of image bindings for each of the stages. So far games have been observed to use 4 image bindings on the fragment stage (Kirby Star Allies) and 1 on the vertex stage (TWD series).
No games thus far in my limited testing used more than 4 images concurrently and across all currently active programs.
This fixes shader compilation errors on Kirby Star Allies on OpenGL (GLSL/GLASM)
2020-06-16 03:03:07 -04:00
Rodrigo Locatti
0bd9bc7201
Merge pull request #4066 from ReinUsesLisp/shared-ptr-buf
buffer_cache: Avoid passing references of shared pointers and misc style changes
2020-06-15 22:29:32 -03:00
MerryMage
cf0aad7d6a macro_jit_x64: Remove NEXT_PARAMETER
Not required, as PARAMETERS can just be incremented directly.
2020-06-15 21:19:38 +01:00
MerryMage
1799f4e774 macro_jit_x64: Remove unused function Compile_WriteCarry 2020-06-15 21:19:38 +01:00
MerryMage
c09a9e5cc7 macro_jit_x64: Select better registers
All registers are now callee-save registers.

RBX and RBP selected for STATE and RESULT because these are most commonly accessed; this is to avoid the REX prefix.
RBP not used for STATE because there are some SIB restrictions, RBX emits smaller code.
2020-06-15 21:19:38 +01:00
MerryMage
79aa7b3ace macro_jit_x64: Remove REGISTERS
Unnecessary since this is just an offset from STATE.
2020-06-15 21:00:59 +01:00
MerryMage
35db6e1c68 macro_jit_x64: Remove JITState::parameters
This can be passed in as an argument instead.
2020-06-15 20:55:02 +01:00
MerryMage
389549b80d macro_jit_x64: Remove METHOD_ADDRESS_64
Unnecessary variable.
2020-06-15 20:51:33 +01:00
MerryMage
a6a43a5ae0 macro_jit_x64: Remove RESULT_64
This Reg64 codepath has the exact same behaviour as the Reg32 one.
2020-06-15 20:35:08 +01:00
MerryMage
d563017dfe xbyak_abi: Remove *GPS variants of stack manipulation functions 2020-06-15 18:59:54 +01:00
ReinUsesLisp
6e5d8aac4d video_core/macro_jit_x64: Remove initializer in member variable
Fix build time issues on gcc. Confirmed through asan that avoiding this
initialization is safe.
2020-06-15 05:17:55 -03:00
bunnei
92021a344c
Merge pull request #4064 from ReinUsesLisp/invalidate-buffers
gl_rasterizer: Mark vertex buffers as dirty after buffer cache invalidation
2020-06-14 00:29:16 -04:00
bunnei
c2ea1e1bcb
Merge pull request #4049 from ReinUsesLisp/separate-samplers
shader/texture: Join separate image and sampler pairs offline
2020-06-13 13:48:27 -04:00
bunnei
5633887569
Merge pull request #3986 from ReinUsesLisp/shader-cache
shader_cache: Implement a generic runtime shader cache
2020-06-12 23:14:48 -04:00
ReinUsesLisp
87011a97f9 gl_arb_decompiler: Implement FSwizzleAdd 2020-06-11 22:12:07 -03:00
ReinUsesLisp
a63a0daa5e gl_arb_decompiler: Implement an assembly shader decompiler
Emit code compatible with NV_gpu_program5.
This should emit code compatible with Fermi, but it wasn't tested on
that architecture. Pascal has some issues not present on Turing GPUs.
2020-06-11 22:12:07 -03:00
bunnei
83e3b77ed7
Merge pull request #4027 from ReinUsesLisp/3d-slices
texture_cache: Implement rendering to 3D textures
2020-06-09 21:52:15 -04:00
ReinUsesLisp
6508cdd003 buffer_cache: Avoid passing references of shared pointers and misc style changes
Instead of using as template argument a shared pointer, use the
underlying type and manage shared pointers explicitly. This can make
removing shared pointers from the cache more easy.

While we are at it, make some misc style changes and general
improvements (like insert_or_assign instead of operator[] + operator=).
2020-06-09 18:30:49 -03:00
ReinUsesLisp
7646f2c21d gl_rasterizer: Mark vertex buffers as dirty after buffer cache invalidation
Vertex buffers bindings become invalid after the stream buffer is
invalidated. We were originally doing this, but it got lost at some
point.

- Fixes Animal Crossing: New Horizons, but it affects everything.
2020-06-08 20:24:16 -03:00
ReinUsesLisp
6e122f0b2c buffer_cache: Return stream buffer invalidation in Map instead of Unmap
We have to invalidate whatever cache is being used before uploading the
data, hence it makes more sense to return this on Map instead of Unmap.
2020-06-08 20:22:31 -03:00
bunnei
3626254f48
Merge pull request #4040 from ReinUsesLisp/nv-transform-feedback
gl_rasterizer: Use NV_transform_feedback for XFB on assembly shaders
2020-06-08 16:18:33 -04:00
bunnei
98d2461529
Merge pull request #4052 from ReinUsesLisp/debug-output
renderer_opengl: Only enable DEBUG_OUTPUT when graphics debugging is enabled
2020-06-08 10:16:41 -04:00
ReinUsesLisp
bd43c05470 texture_cache: Port original code management for 2D vs 3D textures
Handle blits to images as 2D, even when they have block depth.

- Fixes rendering issues on Luigi's Mansion 3
2020-06-08 05:02:22 -03:00
ReinUsesLisp
c99f5d405b texture_cache: Simplify blit code 2020-06-08 05:01:44 -03:00
ReinUsesLisp
3c2ae53b4c texture_cache: Handle 3D texture blits with one layer 2020-06-08 05:01:00 -03:00
ReinUsesLisp
c95c254f3e texture_cache: Implement rendering to 3D textures
This allows rendering to 3D textures with more than one slice.
Applications are allowed to render to more than one slice of a texture
using gl_Layer from a VTG shader.

This also requires reworking how 3D texture collisions are handled, for
now, this commit allows rendering to slices but not to miplevels. When a
render target attempts to write to a mipmap, we fallback to the previous
implementation (copying or flushing as needed).

- Fixes color correction 3D textures on UE4 games (rainbow effects).
- Allows Xenoblade games to render to 3D textures directly.
2020-06-08 05:01:00 -03:00
Rodrigo Locatti
2293e8a11a
Merge pull request #4034 from ReinUsesLisp/storage-texels
vk_rasterizer: Implement storage texels and atomic image operations
2020-06-07 18:43:24 -03:00
ReinUsesLisp
abcea1bb18 rasterizer_cache: Remove files and includes
The rasterizer cache is no longer used. Each cache has its own generic
implementation optimized for the cached data.
2020-06-07 04:32:57 -03:00
ReinUsesLisp
678f95e4f8 vk_pipeline_cache: Use generic shader cache
Trivial port the generic shader cache to Vulkan.
2020-06-07 04:32:57 -03:00
ReinUsesLisp
b96f65b62b gl_shader_cache: Use generic shader cache
Trivially port the generic shader cache to OpenGL.
2020-06-07 04:32:57 -03:00
ReinUsesLisp
dc27252352 shader_cache: Implement a generic shader cache
Implement a generic shader cache for fast lookups and invalidations.
Invalidations are cheap but expensive when a shader is invalidated.

Use two mutexes instead of one to avoid locking invalidations for
lookups and vice versa. When a shader has to be removed, lookups are
locked as expected.
2020-06-07 04:32:32 -03:00
ReinUsesLisp
e78d681a6c gl_device: Black list NVIDIA 443.24 for fast buffer uploads
Skip fast buffer uploads on Nvidia 443.24 Vulkan beta driver on OpenGL.
This driver throws the following error when calling BufferSubData or
BufferData on buffers that are candidates for fast constant buffer
uploads. This is the equivalens to push constants on Vulkan, except that
they can access the full buffer. The error:

Unknown internal debug message. The NVIDIA OpenGL driver has encountered
an out of memory error. This application might
behave inconsistently and fail.

If this error persists on future drivers, we might have to look deeper
into this issue. For now, we can black list it and log it as a temporary
solution.
2020-06-06 02:56:42 -03:00
ReinUsesLisp
354fbe701e renderer_opengl: Only enable DEBUG_OUTPUT when graphics debugging is enabled
Avoids logging when it's not relevant. This can potentially reduce
driver's internal thread overhead.
2020-06-05 21:21:12 -03:00
bunnei
98671b4cfe
Merge pull request #4013 from ReinUsesLisp/skip-no-xfb
vk_rasterizer: Skip transform feedbacks when extension is unavailable
2020-06-05 11:14:36 -04:00
ReinUsesLisp
5b2b6d594c shader/texture: Join separate image and sampler pairs offline
Games using D3D idioms can join images and samplers when a shader
executes, instead of baking them into a combined sampler image. This is
also possible on Vulkan.

One approach to this solution would be to use separate samplers on
Vulkan and leave this unimplemented on OpenGL, but we can't do this
because there's no consistent way of determining which constant buffer
holds a sampler and which one an image. We could in theory find the
first bit and if it's in the TIC area, it's an image; but this falls
apart when an image or sampler handle use an index of zero.

The used approach is to track for a LOP.OR operation (this is done at an
IR level, not at an ISA level), track again the constant buffers used as
source and store this pair. Then, outside of shader execution, join
the sample and image pair with a bitwise or operation.

This approach won't work on games that truly use separate samplers in a
meaningful way. For example, pooling textures in a 2D array and
determining at runtime what sampler to use.

This invalidates OpenGL's disk shader cache :)

- Used mostly by D3D ports to Switch
2020-06-05 00:24:51 -03:00
ReinUsesLisp
e1438f8e91 shader/track: Move bindless tracking to a separate function 2020-06-04 23:02:55 -03:00
bunnei
22369df357
Merge pull request #4031 from Morph1984/fix-gs-outputs
gl_shader_decompiler: Fix geometry shader outputs on Intel drivers
2020-06-04 15:18:51 -04:00
bunnei
34d4abc4f9
Merge pull request #4009 from ogniK5377/macro-jit-prod
video_core: Implement Macro JIT
2020-06-04 11:40:52 -04:00
David Marcec
eca3d16e54 Default init labels and use initializer list for macro engine 2020-06-04 22:23:07 +10:00