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Don't set layouts when the stream not used

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Cloud Wu
2019-04-23 10:50:43 +08:00
parent d1ab0c175f
commit cd1d043126
1 changed files with 8 additions and 3 deletions
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11
src/renderer_mtl.mm
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@@ -2066,9 +2066,12 @@ namespace bgfx { namespace mtl
for (; stream < _numStreams; ++stream)
{
const VertexDecl& vertexDecl = *_vertexDecls[stream];
bool streamUsed = false;
for (uint32_t ii = 0; Attrib::Count != program.m_used[ii]; ++ii)
{
Attrib::Enum attr = Attrib::Enum(program.m_used[ii]);
if (attrSet[attr])
continue;
const uint32_t loc = program.m_attributes[attr];
uint8_t num;
@@ -2087,11 +2090,13 @@ namespace bgfx { namespace mtl
BX_TRACE("attrib: %s format: %d offset: %d", s_attribName[attr], (int)vertexDesc.attributes[loc].format, (int)vertexDesc.attributes[loc].offset);
attrSet[attr] = true;
streamUsed = true;
}
}
vertexDesc.layouts[stream+1].stride = vertexDecl.getStride();
vertexDesc.layouts[stream+1].stepFunction = MTLVertexStepFunctionPerVertex;
if (streamUsed) {
vertexDesc.layouts[stream+1].stride = vertexDecl.getStride();
vertexDesc.layouts[stream+1].stepFunction = MTLVertexStepFunctionPerVertex;
}
}
for (uint32_t ii = 0; Attrib::Count != program.m_used[ii]; ++ii)