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6f80f0f0
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2022-08-06T02:29:19
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Translator: Clean up the compile flag passing interface
Historically, compile flags were sent to the translator as a bitmask.
Recently, we were getting close to running out of bits. Additionally,
direct-to-metal work had started to introduce constants to be passed to
the translator, which were misplaced in ShBuiltInResources and Caps.
Recent work on Pixel Local Storage adds even more constants, aggravating
the situation.
In this change, the interface to passing compile flags is reworked. A
struct is passed (instead of a bitmask) that has one bit for each flag.
This can be indefinitely extended. Additionally, the constants needed
by metal and PLS are also placed in this struct. In turn, the backends
can set these options directly, and don't have to hack them into Caps to
further get hacked into ShBuiltInResources.
Bug: angleproject:7559
Change-Id: If93f1e1b8818ad3a0ac708ab04ab93b4b397d114
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3812562
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Amirali Abdolrashidi <abdolrashidi@google.com>
Commit-Queue: Amirali Abdolrashidi <abdolrashidi@google.com>
Auto-Submit: Shahbaz Youssefi <syoussefi@chromium.org>
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3b988fef
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2022-06-01T10:54:03
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Vulkan: Remove enableLineRasterEmulation
* Removed the Bresenham line raster emulation specialization
constant, along with related variables and functions.
Bug: angleproject:7366
Change-Id: If17c8ce9b459ad801bae8e887e5674bd9a3ff2bf
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3680860
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Charlie Lao <cclao@google.com>
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23f213d1
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2022-05-26T23:43:44
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Vulkan: Make drawable size uniform
As a specialization constant, it's impossible to predict the value the
drawable size may take, which in turn makes it impossible to warm up the
Vulkan pipeline cache at link time.
Bug: angleproject:7366
Change-Id: Ia3d1860a4fcb8e3078fdcb8d02a2e0cd173ea028
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3671976
Reviewed-by: Charlie Lao <cclao@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
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98c2e169
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2022-05-20T16:17:49
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Vulkan: Reduce pre-rotation spec const to bool
The specialization constant now only dictates whether x and y should be
swapped. The complete 8 possible states of rotation and y-flip are
achieved by using this swap in combination with a driver uniform for x
and y flip.
Swapping is still a specialization constant to avoid degrading
performance of dFdx/dFdy which otherwise would need both to be evaluated
instead of one. On platforms which don't support pre-rotation, the
specialization constant will never change and driver uniforms entirely
govern y-flip. On platforms that do support pre-rotation, only two
variations of the pipeline are needed.
Bug: angleproject:7366
Change-Id: I73f84e89fa9349d2098fa5b21573aee57d93a30c
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3663151
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Lingfeng Yang <lfy@google.com>
Reviewed-by: Charlie Lao <cclao@google.com>
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665ddccd
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2021-12-09T23:06:39
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Vulkan: Emulate dithering
Dithering in OpenGL is vaguely defined, to the extent that no dithering
is also a valid dithering algorithm. Dithering is enabled by default,
but emulating it has a non-negligible cost. Similarly to some other
GLES drivers, ANGLE enables dithering only on low-bit formats where
visual banding is particularly common; namely RGBA4444, RGBA5551 and
RGB565.
Dithering is emulated in the fragment shader and is controlled by a spec
constant. Every 2 bits of the spec constant correspond to one
attachment, with the value indicating:
- 00: No dithering
- 01: Dither for RGBA4444
- 10: Dither for RGBA5551
- 11: Dither for RGB565
The translator appends code to the shader that, based on the format
specified by the specialization constant, adds dithering to each color
attachment output. A 2x2 Bayer matrix is used for dithering, indexed by
gl_FragCoord.xy % 2.
Bug: angleproject:6755
Change-Id: Ib45da5938e299b6626bff921119d63e7357dd353
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3374261
Reviewed-by: Tim Van Patten <timvp@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
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095d7c0a
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2022-01-06T01:20:53
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Translator: Clean up spec const / driver uniform types
Bug: angleproject:6755
Change-Id: I8fb1557a5e29fcc28d5cb2f3aaa2c4a14b72583d
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3369125
Reviewed-by: Tim Van Patten <timvp@google.com>
Commit-Queue: Tim Van Patten <timvp@google.com>
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31641b8e
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2021-06-05T02:17:47
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Declare specialization constants in the AST
A new qualifier (EvqSpecConst) is added so that specialization constants
can be declared in tree.
This enables TVariable references to specialization constants to be
validated, which were in fact invalid as every reference declared a new
variable. That is fixed.
Bug: angleproject:4889
Change-Id: I1711e41cbc5a1260843d2d004d3568bdae11e963
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2941451
Reviewed-by: Tim Van Patten <timvp@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
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d7aa0130
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2021-04-26T16:56:15
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Upstream Apple's direct-to-Metal backend: compile translator.
This change is meant to merge the translator changes from Apple's
direct-to-Metal backend. Taken from Kyle Piddington's CL:
https://chromium-review.googlesource.com/c/angle/angle/+/2857366/
The goal of this CL is to merge the translator code in a state that
compiles, but not to switch the Metal backend over to use this
translator backend yet.
Bug: angleproject:5505
Change-Id: I68a6354604498cd5fd1eb96c13fc56f3b38f2bd0
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2897536
Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
Commit-Queue: Jonah Ryan-Davis <jonahr@google.com>
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58eabfd7
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2021-04-08T23:57:04
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Translator: Validate consistent variable references
Some transformations change variable declarations. This validation
ensures that all references to said variables are appropriately replaced
as well.
Bug: angleproject:2733
Change-Id: I6c2873968eeed4cba66e70069f84eb69a1f77074
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2818140
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Tim Van Patten <timvp@google.com>
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b1deba2f
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2021-01-28T16:06:51
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Vulkan: Don't emit spec const declaration in compute shaders
Bug: angleproject:5070
Change-Id: I74becfeac88b4a8ff66dd36670792082d0b941cd
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2658882
Reviewed-by: Charlie Lao <cclao@google.com>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
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dfd9bdfd
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2021-01-16T11:32:30
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Reland "Vulkan: Generate gl_Position pre-rotation in SPIR-V"
This reverts commit 3d39b7c5eab88c420d982155ffbb6181c678ceea.
Reason for revert: Fixed interaction with the
`forceDriverUniformOverSpecConst` workaround.
Original change's description:
> Revert "Vulkan: Generate gl_Position pre-rotation in SPIR-V"
>
> This reverts commit 0f86b196ffaffeeee3460e3188f20a7ac120796d.
>
> Reason for revert:
> Breaks pre-rotation for all apps, so they are displayed in portrait instead of landscape.
>
> Original change's description:
> > Vulkan: Generate gl_Position pre-rotation in SPIR-V
> >
> > Instead of having the translator output pre-rotation code in the vertex
> > stage based on a specialization constant, this change makes the SPIR-V
> > transformer perform pre-rotation of gl_Position on the last geometry
> > stage.
> >
> > An alternative solution would be to generate pre-rotation code in the
> > translator in every geometry stage, each controlled by a separate
> > specialization constant. This change avoids unnecessary modifications
> > to earlier stages. The generated shaders are also smaller, as they
> > don't contain a mat2[8] pre-rotation constant matrix. The SPIR-V
> > transformer knows the pre-rotation at transformation time, so it can
> > simply use swizzles to achieve the same results.
> >
> > This also ties in with upcoming changes which move gl_Position.z
> > correction to the last geometry shader stage, which is trivially done
> > piggy-backing on the infrastructure in this change.
> >
> > Bug: angleproject:5478
> > Change-Id: I9d5d9d19f3ccda665f5504368ce5ddfa5f383faf
> > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2598584
> > Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
> > Reviewed-by: Charlie Lao <cclao@google.com>
> > Reviewed-by: Jamie Madill <jmadill@chromium.org>
>
> TBR=syoussefi@chromium.org,jmadill@chromium.org,cclao@google.com
>
> Change-Id: I81f237fa6b10c7d59831363bee8999e7ad2f09be
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: angleproject:5478
> Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2633694
> Reviewed-by: Tim Van Patten <timvp@google.com>
> Commit-Queue: Tim Van Patten <timvp@google.com>
TBR=timvp@google.com,syoussefi@chromium.org,jmadill@chromium.org,cclao@google.com
Bug: angleproject:5478
Change-Id: I7c5eaeef03d9520abd36a1c4a766b6abbf4fdb45
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2633709
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
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3d39b7c5
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2021-01-16T00:15:14
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Revert "Vulkan: Generate gl_Position pre-rotation in SPIR-V"
This reverts commit 0f86b196ffaffeeee3460e3188f20a7ac120796d.
Reason for revert:
Breaks pre-rotation for all apps, so they are displayed in portrait instead of landscape.
Original change's description:
> Vulkan: Generate gl_Position pre-rotation in SPIR-V
>
> Instead of having the translator output pre-rotation code in the vertex
> stage based on a specialization constant, this change makes the SPIR-V
> transformer perform pre-rotation of gl_Position on the last geometry
> stage.
>
> An alternative solution would be to generate pre-rotation code in the
> translator in every geometry stage, each controlled by a separate
> specialization constant. This change avoids unnecessary modifications
> to earlier stages. The generated shaders are also smaller, as they
> don't contain a mat2[8] pre-rotation constant matrix. The SPIR-V
> transformer knows the pre-rotation at transformation time, so it can
> simply use swizzles to achieve the same results.
>
> This also ties in with upcoming changes which move gl_Position.z
> correction to the last geometry shader stage, which is trivially done
> piggy-backing on the infrastructure in this change.
>
> Bug: angleproject:5478
> Change-Id: I9d5d9d19f3ccda665f5504368ce5ddfa5f383faf
> Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2598584
> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
> Reviewed-by: Charlie Lao <cclao@google.com>
> Reviewed-by: Jamie Madill <jmadill@chromium.org>
TBR=syoussefi@chromium.org,jmadill@chromium.org,cclao@google.com
Change-Id: I81f237fa6b10c7d59831363bee8999e7ad2f09be
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: angleproject:5478
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2633694
Reviewed-by: Tim Van Patten <timvp@google.com>
Commit-Queue: Tim Van Patten <timvp@google.com>
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0f86b196
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2020-12-21T22:54:05
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Vulkan: Generate gl_Position pre-rotation in SPIR-V
Instead of having the translator output pre-rotation code in the vertex
stage based on a specialization constant, this change makes the SPIR-V
transformer perform pre-rotation of gl_Position on the last geometry
stage.
An alternative solution would be to generate pre-rotation code in the
translator in every geometry stage, each controlled by a separate
specialization constant. This change avoids unnecessary modifications
to earlier stages. The generated shaders are also smaller, as they
don't contain a mat2[8] pre-rotation constant matrix. The SPIR-V
transformer knows the pre-rotation at transformation time, so it can
simply use swizzles to achieve the same results.
This also ties in with upcoming changes which move gl_Position.z
correction to the last geometry shader stage, which is trivially done
piggy-backing on the infrastructure in this change.
Bug: angleproject:5478
Change-Id: I9d5d9d19f3ccda665f5504368ce5ddfa5f383faf
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2598584
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Charlie Lao <cclao@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
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c75473c2
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2020-11-23T14:26:32
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Vulkan: Generalize FlipRotationSpecConst to SpecializationConstant
Specialization constant are used not just for flip/rotation. It also
used for other things. This CL merges all specialization constant usage
(lineRasterEmulation, flip, rotation, halfRenderArea) into one class and
rename FlipRotationSpecConst to SpecConst.
Bug: b/173800146
Change-Id: I8dc3354b6caedbb183cec29855fc1c301ec8872a
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2555812
Commit-Queue: Charlie Lao <cclao@google.com>
Reviewed-by: Tim Van Patten <timvp@google.com>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
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