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feat(shader): Add attribute aliasing for improved attribute mapping in shaderc_spirv

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johndoe6345789
2026-01-07 22:14:42 +00:00
parent 973dfcf9ea
commit a04fed45cf
1 changed files with 56 additions and 0 deletions
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56
src/bgfx_tools/shaderc/shaderc_spirv.cpp
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@@ -305,6 +305,42 @@ namespace bgfx { namespace spirv
};
static_assert(bgfx::Attrib::Count == BX_COUNTOF(s_attribName) );
struct AttribAlias
{
const char* name;
bgfx::Attrib::Enum attrib;
};
static const AttribAlias s_attribAlias[] =
{
{ "i_position", bgfx::Attrib::Position },
{ "i_normal", bgfx::Attrib::Normal },
{ "i_tangent", bgfx::Attrib::Tangent },
{ "i_bitangent", bgfx::Attrib::Bitangent },
{ "i_color0", bgfx::Attrib::Color0 },
{ "i_color_0", bgfx::Attrib::Color0 },
{ "i_color1", bgfx::Attrib::Color1 },
{ "i_color_1", bgfx::Attrib::Color1 },
{ "i_indices", bgfx::Attrib::Indices },
{ "i_weight", bgfx::Attrib::Weight },
{ "i_texcoord0", bgfx::Attrib::TexCoord0 },
{ "i_texcoord_0", bgfx::Attrib::TexCoord0 },
{ "i_texcoord1", bgfx::Attrib::TexCoord1 },
{ "i_texcoord_1", bgfx::Attrib::TexCoord1 },
{ "i_texcoord2", bgfx::Attrib::TexCoord2 },
{ "i_texcoord_2", bgfx::Attrib::TexCoord2 },
{ "i_texcoord3", bgfx::Attrib::TexCoord3 },
{ "i_texcoord_3", bgfx::Attrib::TexCoord3 },
{ "i_texcoord4", bgfx::Attrib::TexCoord4 },
{ "i_texcoord_4", bgfx::Attrib::TexCoord4 },
{ "i_texcoord5", bgfx::Attrib::TexCoord5 },
{ "i_texcoord_5", bgfx::Attrib::TexCoord5 },
{ "i_texcoord6", bgfx::Attrib::TexCoord6 },
{ "i_texcoord_6", bgfx::Attrib::TexCoord6 },
{ "i_texcoord7", bgfx::Attrib::TexCoord7 },
{ "i_texcoord_7", bgfx::Attrib::TexCoord7 },
};
bgfx::Attrib::Enum toAttribEnum(const bx::StringView& _name)
{
for (uint8_t ii = 0; ii < Attrib::Count; ++ii)
@@ -315,6 +351,26 @@ namespace bgfx { namespace spirv
}
}
for (const auto& alias : s_attribAlias)
{
if (0 == bx::strCmp(alias.name, _name) )
{
if (bgfx::g_verbose)
{
BX_TRACE("shaderc_spirv: mapped attribute %s -> %s",
alias.name,
s_attribName[alias.attrib]);
}
return alias.attrib;
}
}
if (bgfx::g_verbose)
{
BX_TRACE("shaderc_spirv: unknown attribute %.*s",
_name.getLength(),
_name.getPtr());
}
return bgfx::Attrib::Count;
}