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Gawain: faster lookup shader attribs by name 

Quick hash rejection instead of string comparison. Uniform lookups already work this way. I don't expect a major overall speedup since attributes are looked up less frequently than uniforms.
This commit is contained in:
Mike Erwin 2017-06-04 22:02:30 -04:00
parent a5242d08fb
commit bb3e669d06
1 changed files with 3 additions and 0 deletions
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3
intern/gawain/src/shader_interface.c
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@ -288,6 +288,7 @@ const ShaderInput* ShaderInterface_attrib(const ShaderInterface* shaderface, con
{
// attribs are stored after uniforms
const uint32_t input_ct = shaderface->uniform_ct + shaderface->attrib_ct;
const unsigned name_hash = hash_string(name);
for (uint32_t i = shaderface->uniform_ct; i < input_ct; ++i)
{
const ShaderInput* attrib = shaderface->inputs + i;
@ -296,6 +297,8 @@ const ShaderInput* ShaderInterface_attrib(const ShaderInterface* shaderface, con
if (attrib->name == NULL) continue;
#endif
if (attrib->name_hash != name_hash) continue;
if (match(attrib->name, name))
return attrib;
}