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9070e279
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2022-06-30T09:35:59
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Vulkan: Handle platforms that have imprecise float division issues
Even when the dividend and divisor have the same value
some platforms do not return 1.0f. We need to emit sepcial
division code on such platforms.
Bug: angleproject:3586
Tests: KHR-GLES31.core.blend_equation_advanced.blend*HSL*
Change-Id: Ibb81f57c959ae2c8edb6d361bf6241c019dfb988
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3738439
Reviewed-by: Charlie Lao <cclao@google.com>
Commit-Queue: mohan maiya <m.maiya@samsung.com>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
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2df17a12
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2022-05-25T16:18:37
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Vulkan: Pack driver uniforms
Previously 5 vec4s were used for driver uniforms + 2 vec4s if
specialization constants couldn't be supported.
The driver uniforms are rearranged and packed such that only 2 vec4s are
normally used, which include fallback for specialization constants as
well. In the future, most of the specialization constants may turn into
uniforms, and this change prepares for that.
Additional uniforms are used (3 vec4s) only if common extensions are
missing; transform feedback and bresenham lines.
This change makes it more practical for driver uniforms to be turned
into push constants. Additionally, these uniforms could potentially be
loaded and cached at the beginning of the shader for more efficient
memory access.
On Pixel6, with this change, the traces show no difference in wall time.
On most traces, CPU time shows up to ~7% improvement.
Bug: angleproject:7366
Change-Id: I0f47f863955af06a19c69d1f1d7c45b97d95476e
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3668151
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Charlie Lao <cclao@google.com>
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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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62fe36d3
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2022-05-04T22:46:52
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Vulkan: Emulate YUV built-ins
In this change, the rgb_2_yuv and yuv_2_rgb built-ins are emulated with
normal functions that perform matrix multiplication based on the given
conversion function.
Bug: angleproject:6818
Change-Id: I67adb029109aaf6a674b1ee75105c1b352325eb2
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3630599
Reviewed-by: Shahbaz Youssefi <syoussefi@google.com>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
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c5271e8e
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2022-04-04T23:28:35
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Vulkan: Emulate GL_KHR_blend_equation_advanced
Based on a change by Brandon Schade <b.schade@samsung.com>
In the translator, when advanced blend is enabled, an input attachment
is added. Based on the listed advanced blend equations, emulation code
is added that performs those equations' functions. The blend equation
itself is passed through a driver uniform.
Note that the advanced blend extension only allows a single output to
use advanced blend, and that should be at location 0.
In the Vulkan backend, when advanced blend is used, the driver uniform
to select the equation is updated and normal blending is disabled.
Bug: angleproject:3586
Change-Id: Icc42e8be238d34fca149087eb9cfe616a7643a6b
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3575738
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Yuxin Hu <yuxinhu@google.com>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
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