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c1cdc2b5
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2025-08-22T15:23:58
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Transform SPIRV to use 16-bit float for lower precision uniforms
This change adds a ShCompileOption flag transformFloatUniformTo16Bits.
The flag is turned on in vulkan backends where VK_KHR_16bit_storage
extension is supported, and uniformAndStorageBuffer16BitAccess feature
is supported. When the compiler flag is turned on, in the generated
SPIRV, float data types in mediump and lowp uniforms are transformed
from 32-bit to 16-bit. The 16-bit float uniform data is converted to
32-bit with OpFConvert instruction upon loading in SPIRV, this is to
minimize the changes in OutputSPIRV.cpp. The converted variable is
decorated with RelaxedPrecision, so that SPIRV compiler should be able
to treat the converted variable as 16 bits, and the hardware can
still benefit from reduced precision floats.
The frontend is also notified such SPIRV shader changes by setting
the isFloat16 bit in CollectVariables() step, and the frontend will
transform float uniform data from 32-bit to 16-bit before storing the
data into memory. That way, the uniform data that SPIRV shader reads
matches with the uniform data type transformed in the SPIRV shader.
This change also updates some test code to allow relative 2^-10
precision wiggle room for mediump uniform floats. This is valid
according to spec:
https://developer.arm.com/documentation/102502/0101/Shader-precision
Bug: angleproject:405795981
Bug: angleproject:440941211
Change-Id: I05db7f5ef744df513fbad87cfed8aa173890ec26
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6851560
Reviewed-by: Amirali Abdolrashidi <abdolrashidi@google.com>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Yuxin Hu <yuxinhu@google.com>
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251ffe62
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2025-07-15T17:37:30
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Vulkan: Add support for built-in gl_ShadingRateEXT
Add support for built-in gl_ShadingRateEXT of
GL_EXT_fragment_shading_rate
Bug: angleproject:420310117
Change-Id: Ie11b139a0371b5995f1533a85e02c590cd36109c
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6733750
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Charlie Lao <cclao@google.com>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
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0cfea380
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2025-01-15T10:46:54
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Rename sh::TSpan as general purpose angle::Span
Span abstraction is useful for making buffer manipulation more
consistent. The commit makes the Span available to all code until
std::span can be used.
Bug: angleproject:389951202
Change-Id: Id0c6b54bb6e75d3cc4e85af854d9e61b66906752
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6170997
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Auto-Submit: Kimmo Kinnunen <kkinnunen@apple.com>
Commit-Queue: Kimmo Kinnunen <kkinnunen@apple.com>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
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df90bbc5
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2024-07-12T18:04:53
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Refactoring: move angle::HashMap and HashSet to own header
Underlying abseil includes pull in a large set of headers
Bug: angleproject:42266508
Change-Id: Icee47143a8a59bb0795a054b67c0aa4ddcfca4d4
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5704137
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
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d193d51b
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2024-06-17T22:46:08
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Replace issue ids post migration to new issue tracker
This change replaces anglebug.com/NNNN links.
Bug: None
Change-Id: I8ac3aec8d2a8a844b3d7b99fc0a6b2be8da31761
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5637912
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
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9620d4d3
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2024-05-23T16:12:52
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Vulkan: Emit SPIR-V 1.4 where available
In preparation for optimizations possible for SPIR-V 1.4. This change
makes ANGLE output SPIR-V 1.4 if supported, and SPIR-V 1.3 otherwise.
It handles the following differences between the two versions:
- OpEntryPoint in SPIR-V 1.4 includes all global variables, as opposed
to SPIR-V 1.3 where only the Input and Output variables are listed
- Storage buffers use a dedicated storage class in SPIR-V 1.4
Bug: angleproject:342316794
Change-Id: I157ed46449ff2d0f14d284b883b4ddc1b4b46fd1
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5565224
Reviewed-by: Yuxin Hu <yuxinhu@google.com>
Reviewed-by: Amirali Abdolrashidi <abdolrashidi@google.com>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
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9b63700b
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2023-07-11T10:25:40
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Translator: Reorganize files
This change makes the translator files more organized by:
- Grouping files that are specific to a certain output under their own
directory,
- Moving transformations under tree_ops
- Removing Direct from metal translation now that that SPIR-V Cross path
is removed
Bug: angleproject:6394
Change-Id: Iaf5bb8d5604b84748dece029821b1f77b2813967
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4678780
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
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