//==============================================================================
Error Material::createProgramSourceToCache(
const TempResourceString& source, TempResourceString& out)
{
Error err = ErrorCode::NONE;
auto alloc = m_resources->_getTempAllocator();
// Create the hash
U64 h = computeHash(&source[0], source.getLength());
TempResourceString prefix;
TempResourceString::ScopeDestroyer prefixd(&prefix, alloc);
ANKI_CHECK(prefix.toString(alloc, h));
// Create path
ANKI_CHECK(out.sprintf(alloc, "%s/mtl_%s.glsl",
&m_resources->_getCacheDirectory()[0],
&prefix[0]));
// If file not exists write it
if(!fileExists(out.toCString()))
{
// If not create it
File f;
ANKI_CHECK(f.open(out.toCString(), File::OpenFlag::WRITE));
ANKI_CHECK(f.writeText("%s\n", &source[0]));
}
return err;
}
//==============================================================================
Error Material::parseMaterialTag(const XmlElement& materialEl,
ResourceInitializer& rinit)
{
Error err = ErrorCode::NONE;
XmlElement el;
// levelsOfDetail
//
XmlElement lodEl;
ANKI_CHECK(materialEl.getChildElementOptional("levelsOfDetail", lodEl));
if(lodEl)
{
I64 tmp;
ANKI_CHECK(lodEl.getI64(tmp));
m_lodsCount = (tmp < 1) ? 1 : tmp;
}
else
{
m_lodsCount = 1;
}
// shadow
//
XmlElement shadowEl;
ANKI_CHECK(materialEl.getChildElementOptional("shadow", shadowEl));
if(shadowEl)
{
I64 tmp;
ANKI_CHECK(shadowEl.getI64(tmp));
m_shadow = tmp;
}
// blendFunctions
//
XmlElement blendFunctionsEl;
ANKI_CHECK(
materialEl.getChildElementOptional("blendFunctions", blendFunctionsEl));
if(blendFunctionsEl)
{
CString cstr;
// sFactor
ANKI_CHECK(blendFunctionsEl.getChildElement("sFactor", el));
ANKI_CHECK(el.getText(cstr));
m_blendingSfactor = blendToEnum(cstr);
if(m_blendingSfactor == 0)
{
return ErrorCode::USER_DATA;
}
// dFactor
ANKI_CHECK(blendFunctionsEl.getChildElement("dFactor", el));
ANKI_CHECK(el.getText(cstr));
m_blendingDfactor = blendToEnum(cstr);
if(m_blendingDfactor == 0)
{
return ErrorCode::USER_DATA;
}
}
else
{
m_passesCount = 2;
}
// depthTesting
//
XmlElement depthTestingEl;
ANKI_CHECK(
materialEl.getChildElementOptional("depthTesting", depthTestingEl));
if(depthTestingEl)
{
I64 tmp;
ANKI_CHECK(depthTestingEl.getI64(tmp));
m_depthTesting = tmp;
}
// wireframe
//
XmlElement wireframeEl;
ANKI_CHECK(materialEl.getChildElementOptional("wireframe", wireframeEl));
if(wireframeEl)
{
I64 tmp;
ANKI_CHECK(wireframeEl.getI64(tmp));
m_wireframe = tmp;
}
// shaderProgram
//
ANKI_CHECK(materialEl.getChildElement("programs", el));
MaterialProgramCreator loader(rinit.m_tempAlloc);
ANKI_CHECK(loader.parseProgramsTag(el));
m_tessellation = loader.hasTessellation();
U tessCount = m_tessellation ? 2 : 1;
// Alloc program vector
ANKI_CHECK(m_progs.create(rinit.m_alloc,
countShaders(ShaderType::VERTEX)
+ countShaders(ShaderType::TESSELLATION_CONTROL)
+ countShaders(ShaderType::TESSELLATION_EVALUATION)
+ countShaders(ShaderType::GEOMETRY)
+ countShaders(ShaderType::FRAGMENT)));
// Aloc progam descriptors
m_pplines.resize(m_passesCount * m_lodsCount * tessCount);
m_hash = 0;
for(ShaderType shader = ShaderType::VERTEX;
shader <= ShaderType::FRAGMENT;
++shader)
{
Bool isTessellationShader = shader == ShaderType::TESSELLATION_CONTROL
|| shader == ShaderType::TESSELLATION_EVALUATION;
if(!m_tessellation && isTessellationShader)
{
// Skip tessellation if not enabled
continue;
}
if(shader == ShaderType::GEOMETRY)
{
// Skip geometry for now
continue;
}
for(U level = 0; level < m_lodsCount; ++level)
{
if(level > 0 && isTessellationShader)
{
continue;
}
for(U pid = 0; pid < m_passesCount; ++pid)
{
for(U tess = 0; tess < tessCount; ++tess)
{
if(tess == 0 && isTessellationShader)
{
continue;
}
if(tess > 0 && shader == ShaderType::FRAGMENT)
{
continue;
}
TempResourceString src;
TempResourceString::ScopeDestroyer srcd(
&src, rinit.m_tempAlloc);
ANKI_CHECK(src.sprintf(
rinit.m_tempAlloc,
"%s\n"
"#define LOD %u\n"
"#define PASS %u\n"
"#define TESSELLATION %u\n"
"%s\n",
&rinit.m_resources._getShadersPrependedSource()[0],
level, pid, tess, &loader.getProgramSource(shader)[0]));
TempResourceString filename;
TempResourceString::ScopeDestroyer filenamed(
&filename, rinit.m_tempAlloc);
ANKI_CHECK(createProgramSourceToCache(src, filename));
RenderingKey key((Pass)pid, level, tess);
ProgramResourcePointer& progr = getProgram(key, shader);
ANKI_CHECK(
progr.load(filename.toCString(), &rinit.m_resources));
// Update the hash
m_hash ^= computeHash(&src[0], src.getLength());
}
}
}
}
ANKI_CHECK(populateVariables(loader));
// Get uniform block size
ANKI_ASSERT(m_progs.getSize() > 0);
m_shaderBlockSize = loader.getUniformBlockSize();
return err;
}