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ebe943e2
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2021-07-29T11:19:33
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Vulkan: SPIR-V Gen: Fix gl_Clip/CullDistance
These built-ins can be redeclared in the shader. The translator took
these redeclarations (and gl_LastFragData) as UserDefined symbols.
There were a number of hacks such as in name generation and
CollectVariables, to special-case these redeclarations.
This change instead makes sure that these variables continue to be
considered built-ins with the appropriate qualifiers. A number of fixes
are made accordingly:
- Hacks are removed.
- In fragment shaders, ANGLEClipDistance was initialized with
gl_ClipDistance for further use by the shader. The code generation
however mistakenly produced `gl_ClipDistance[0] =
ANGLEClipDistance[0];`, which caused compilation failures by glslang,
but passed the tests accidentally because they expected link failures
(see next item).
- CollectVariables is fixed to correctly collect gl_Clip/CullDistance
in fragment shaders; previously they were collected as output
varyings, and therefore the aforementioned link error was not produced
in the tests after the compilation error was fixed.
Additional fixes:
- The transformation of gl_Clip/CullDistance was always ever done on one
of them due to misplaced breaks in the loop that detected their
presence.
- The transformation of gl_CullDistance was skipped when it was not
redeclared.
Validation is added to make sure these built-ins always have the correct
qualifier even when redeclared. SPIR-V gen support for these variables
have been fixed as well.
Bug: angleproject:4889
Change-Id: Ic8bf2c508357035cb937ef41a28ae22ffc533ebe
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3059921
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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550f2a3e
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2021-02-24T09:49:42
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Vulkan: Shader support for EXT_shader_framebuffer_fetch_non_coherent
Translator can accept gl_LastFragData and 'inout' variable to gain
access to framebuffer attachment data. The Vulkan translator replaces
it with the SubpassInput type variable. Note that this works only for
the noncoherent version of the extension.
Bug: angleproject:5454
Test: *EXTShaderFramebufferFetchNoncoherent*.*
Change-Id: I392f84ee3ad3eb9fbd09d0b7ff83731a9a3f33f6
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2598060
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Mohan Maiya <m.maiya@samsung.com>
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cea86910
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2021-01-14T08:13:00
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Vulkan: Support EXT_clip_cull_distance extension
EXT_clip_cull_distance extension is supported except for
some features related to EXT_tessellation_shader and
EXT_geometry_shader. Also added a few compiler tests to validate
the transformation from ESSL to GLSL for Vulkan backend.
Bug: angleproject:5458
Tests: angle_end2end_tests --gtest_filter=Clip*DistanceTest*
angle_unittests --gtest_filter=*Clip*Distance*
Change-Id: Ie74e6b2b55112ad92ad111191d629b63506032ab
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2585987
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Mohan Maiya <m.maiya@samsung.com>
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98d0f30c
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2020-06-10T22:04:03
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Add to names map even if it's a prefixed name
Previously, we skipped adding to the names map if it was a prefixed
name. This prevents the mapping of glsl es to glsl names from being
accessible by an outside client.
Bug: b/158533223
Change-Id: Ib1d1e229ceb6d836df8dd0c30ea848b081a40cad
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2240637
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Lingfeng Yang <lfy@google.com>
Commit-Queue: Lingfeng Yang <lfy@google.com>
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dadd1986
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2020-04-21T01:50:00
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Implement GL_APPLE_clip_distance
- Built-in variable gl_ClipDistance has been added to compiler.
- Desktop GL: gl_ClipDistance is supported since GL 3.0. Enable/Disable
each gl_ClipDistances[i] works out of the box via glEnable().
- Vulkan/Metal: Use uniform variable to control writing to each
gl_ClipDistance. One bit flag controls one element in the gl_ClipDistance
array. The writing to the disabled element in vertex shader will be
ignored, and turned into zero assignment instead.
- Direct3D/Mobile GL: Not implemented yet.
- Added ClipDistanceTest to gl_tests and compiler unittests.
- GL_APPLE_clip_distance is a subset of GL_EXT_clip_cull_distance, so
GL_EXT_clip_cull_distance could be implemented in future if needed.
Bug: angleproject:4452
Change-Id: I571ac8b56826989808a680226a04bec4cf59988e
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2084324
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
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71e6afb1
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2020-01-14T14:12:31
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Vulkan: Set set/binding in SPIR-V
This change introduces a SPIR-V transformer that modifies shader
interface variable decorations directly in SPIR-V instead of
manipulating the input GLSL. Currently, descriptor set and binding
indices are set by the transformer.
The shader translator outputs arbitrary set and binding indices. Once
compiled by glslang, the SPIR-V transformer modifies these decorations.
The ultimate goal is to be able to modify the SPIR-V again when program
pipeline objects decide a different set/binding is necessary.
Bug: angleproject:3394
Change-Id: If358265a72bf1fe9f5676562b39a632cb2e05dc4
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2001477
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
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9d737966
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2019-08-14T12:25:12
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Standardize copyright notices to project style
For all "ANGLE Project" copyrights, standardize to the format specified
by the style guide. Changes:
- "Copyright (c)" and "Copyright(c)" changed to just "Copyright".
- Removed the second half of date ranges ("Y1Y1-Y2Y2"->"Y1Y1").
- Fixed a small number of files that had no copyright date using the
initial commit year from the version control history.
- Fixed one instance of copyright being "The ANGLE Project" rather than
"The ANGLE Project Authors"
These changes are applied both to the copyright of source file, and
where applicable to copyright statements that are generated by
templates.
BUG=angleproject:3811
Change-Id: I973dd65e4ef9deeba232d5be74c768256a0eb2e5
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754397
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
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b779b12c
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2018-06-20T11:46:43
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Add kEmptyImmutableString.
We can use this instead of ImmutableString("").
Bug: angleproject:2665
Change-Id: I8b3d5d3075838b9f2caa1627071202e48a5fdc83
Reviewed-on: https://chromium-review.googlesource.com/1108085
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Luc Ferron <lucferron@chromium.org>
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10887984
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2018-06-20T11:46:41
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Vulkan: Sampler structs in arrays.
Samplers are extracted from arrays of struct uniforms similarly as
with non-arrays. They are named according to the variable name,
array element and sampler field name.
Nested structs to come later.
Bug: angleproject:2494
Change-Id: Ie2f5f7bd1f747e73b3c6b505b2b1043cfe1073b5
Reviewed-on: https://chromium-review.googlesource.com/1101568
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
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fbb1c792
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2018-01-19T16:26:59
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Store symbol names as a ImmutableString
This will enable compile-time initialization of built-in symbols as
well as reducing copying strings.
Most of the code that deals with names is changed to use
ImmutableString where it makes sense to avoid conversions.
The lexer/parser now allocate const char pointers into pool memory
instead of allocating TStrings. These are then converted to
ImmutableString upon entering TParseContext.
BUG=angleproject:2267
TEST=angle_unittests, angle_end2end_tests
Change-Id: I244d6271ea1ecf7150d4f89dfa388a7745a1150c
Reviewed-on: https://chromium-review.googlesource.com/881561
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
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8b5e8fdb
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2017-12-15T14:59:15
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Replace remaining usage of TName with TSymbol
TName used to contain just a subset of the information stored in
TSymbol. It makes more sense to use TSymbol directly instead of
converting it to TName.
This also improves type safety a bit by making some functions only
take in TVariable or TFunction instead of the more generic TName.
BUG=angleproject:2267
TEST=angle_unittests
Change-Id: Icb46923c25d33ebbbbc06ddc487da25957dda771
Reviewed-on: https://chromium-review.googlesource.com/829143
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
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855d964b
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2017-05-17T14:05:06
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Prefix user-defined names in GLSL output
Now user-defined names are prefixed by _u in GLSL output in case name
hashing is not on. Internal names such as names of temporary variables
created in AST transformations are written out as such.
This makes handling of internal function names and internal variable
names consistent. It also removes the possibility of name conflicts
between user-defined names and internal names in case name hashing is
not on. In the same vein, it makes it safe to use GLSL reserved words
that are not reserved in ESSL as variable names in case name hashing
is not on.
This also makes the GLSL output more consistent with how names are
handled in HLSL output. Name hashing code is shared between
VariableInfo and OutputGLSLBase to ensure names are handled
consistently in both. The name that's used in the shader source for a
given interface variable is written out to ShaderVariable::mappedName.
An exception needs to be made for identifiers close to the length
limit, since adding any prefix would take them over the limit. But
they can be just written out as such, since we don't have any builtins
or ANGLE internal variables that have as long names and could create a
conflict.
BUG=angleproject:2139
BUG=angleproject:2038
TEST=angle_unittests, angle_end2end_tests, WebGL conformance tests
Change-Id: Id6ed052c4fab2d091227dc9a3668083053b67a38
Reviewed-on: https://chromium-review.googlesource.com/507647
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
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cccf2b00
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2017-07-05T14:50:54
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Reorganize AST traversal utility code
Define TIntermTraverser and TIntermLValueTrackingTraverser in a
separate header file. hash() function is moved out from
TIntermTraverser as it is not related to the core functionality
of traversing and transforming ASTs.
Also reorganize some traversers to follow common conventions:
- Intermediate output is now in OutputTree.h/.cpp
- Max tree depth check is now in IsASTDepthBelowLimit.h/.cpp
BUG=angleproject:1490
TEST=angle_unittests
Change-Id: Id4968aa9d4e24d0c5bac90dc147fc9f310de0184
Reviewed-on: https://chromium-review.googlesource.com/559531
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
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