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a7dc51f2
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2022-10-01T08:49:11
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Add a framebuffer fetch implementation of PLS
The framebuffer fetch implementation works by attaching PLS backing
textures to the framebuffer, and then rewriting PLS uniforms as "inout"
fragment variables. The compiler's existing machinery takes it from
there and makes it work on GL and Vulkan, and soon Metal.
EXT_shader_framebuffer_fetch is now the preferred backend for pixel
local storage, but we also use EXT_shader_framebuffer_fetch_non_coherent
if shader images can't be coherent. This is especially interesting for
Vulkan, since noncoherent framebuffer fetch is possible without any
extensions.
Bug: angleproject:7279
Bug: angleproject:7683
Bug: angleproject:7684
Bug: angleproject:7724
Change-Id: I33f3b2c6df9a5709969d9165c448ea71b096c9e1
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3900142
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Chris Dalton <chris@rive.app>
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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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77aa34ae
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2022-07-16T13:08:00
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Add support for PLS as function arguments
Bug: angleproject:7279
Change-Id: I89d5c02148cbdbbd02dc4840ffada2c96c2a849b
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3767534
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Chris Dalton <chris@rive.app>
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c460c299
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2022-06-21T11:20:45
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Implement GLSL additions for ANGLE_shader_pixel_local_storage
Specs out, implements, and thoroughly tests the GLSL additions for
ANGLE_shader_pixel_local_storage. Adds a simple transformation that
rewrites PLS directly into shader images. Updates the existing PLS tests
to use the newly built-in PLS features and ensures they continue
passing.
For now, applications call glBindImageTexture to configure their pixel
local storage. The OpenGL ES API side of this extension will follow
shortly.
Bug: angleproject:7279
Change-Id: I141183069b5cbfcca01cbb77b5b36d3e5f834bf5
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3761876
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Chris Dalton <chris@rive.app>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
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