Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: bf7503217164cad8cc2c4ba547aee7c298e5ccbc
      
https://github.com/WebKit/WebKit/commit/bf7503217164cad8cc2c4ba547aee7c298e5ccbc
  Author: Mike Wyrzykowski <[email protected]>
  Date:   2024-11-04 (Mon, 04 Nov 2024)

  Changed paths:
    A LayoutTests/fast/webgpu/nocrash/fuzz-282485-expected.txt
    A LayoutTests/fast/webgpu/nocrash/fuzz-282485.html
    M Source/WebGPU/WebGPU/RenderBundleEncoder.mm
    M Source/WebGPU/WebGPU/RenderPassEncoder.h
    M Source/WebGPU/WebGPU/RenderPassEncoder.mm

  Log Message:
  -----------
  [WebGPU] computeMininumVertexInstanceCount() does not handle buffer sizes 
less than lastStride
https://bugs.webkit.org/show_bug.cgi?id=282485
rdar://138783147

Reviewed by Tadeu Zagallo.

When stride == 0 but lastStride > bufferSize, we incorrectly did not report
the max allowed vertex count was zero.

* LayoutTests/fast/webgpu/nocrash/fuzz-282485-expected.txt: Added.
* LayoutTests/fast/webgpu/nocrash/fuzz-282485.html: Added.
Add regression test.

* Source/WebGPU/WebGPU/RenderBundleEncoder.mm:
(WebGPU::RenderBundleEncoder::computeMininumVertexInstanceCount const):
Refactor common logic.

* Source/WebGPU/WebGPU/RenderPassEncoder.h:
* Source/WebGPU/WebGPU/RenderPassEncoder.mm:
(WebGPU::RenderPassEncoder::runIndexBufferValidation):
(WebGPU::RenderPassEncoder::computeMininumVertexInstanceCount):
(WebGPU::RenderPassEncoder::computeMininumVertexInstanceCount const):

Canonical link: https://commits.webkit.org/286109@main



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