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Fix the vertex attribute offset alignment rule.

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Bug: dawn:130
Change-Id: Ib5fa24bf5520cb1ffe1653f1504dff244df928b4
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/44300
Auto-Submit: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
Reviewed-by: Jiawei Shao <jiawei.shao@intel.com>
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>
This commit is contained in:
Corentin Wallez
2021-03-15 14:52:53 +00:00
committed by Commit Bot service account
parent 693b76bcd5
commit a94c9acd01
2 changed files with 21 additions and 5 deletions
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21
src/tests/unittests/validation/VertexStateValidationTests.cpp
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@@ -292,17 +292,32 @@ TEST_F(VertexStateTest, SetAttributeOffsetOutOfBounds) {
CreatePipeline(false, state, kDummyVertexShader);
}
// Check multiple of 4 bytes constraint on offset
// Check the "component byte size" alignment constraint for the offset.
TEST_F(VertexStateTest, SetOffsetNotAligned) {
// Control case, setting offset 4 bytes.
// Control case, setting the offset at the correct alignments.
utils::ComboVertexStateDescriptor state;
state.vertexBufferCount = 1;
state.cVertexBuffers[0].attributeCount = 1;
state.cAttributes[0].format = wgpu::VertexFormat::Float32;
state.cAttributes[0].offset = 4;
CreatePipeline(true, state, kDummyVertexShader);
// Test offset not multiple of 4 bytes
state.cAttributes[0].format = wgpu::VertexFormat::Snorm16x2;
state.cAttributes[0].offset = 2;
CreatePipeline(true, state, kDummyVertexShader);
state.cAttributes[0].format = wgpu::VertexFormat::Uint8x2;
state.cAttributes[0].offset = 1;
CreatePipeline(true, state, kDummyVertexShader);
// Test offset not multiple of the component byte size.
state.cAttributes[0].format = wgpu::VertexFormat::Float32;
state.cAttributes[0].offset = 2;
CreatePipeline(false, state, kDummyVertexShader);
state.cAttributes[0].format = wgpu::VertexFormat::Snorm16x2;
state.cAttributes[0].offset = 1;
CreatePipeline(false, state, kDummyVertexShader);
}