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Update boo and Metal backend

This commit is contained in:
Jack Andersen 2016-04-02 20:19:03 -10:00
parent 3b757c9854
commit 54ca41f2ed
3 changed files with 95 additions and 77 deletions

2
hecl/extern/boo vendored

@ -1 +1 @@
Subproject commit 4c8e36f3e33582bca396b3b89e29178ebc2f1728 Subproject commit 843396095f8cbc160541edfcbf1a22c0030d397c

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@ -1,12 +1,24 @@
#ifndef HECLBACKEND_METAL_HPP #ifndef HECLBACKEND_METAL_HPP
#define HECLBACKEND_METAL_HPP #define HECLBACKEND_METAL_HPP
#if __APPLE__
#include <Availability.h>
#if __MAC_OS_X_VERSION_MAX_ALLOWED >= 101100
#define BOO_HAS_METAL 1
#else
#define BOO_HAS_METAL 0
#endif
#endif
#if BOO_HAS_METAL #if BOO_HAS_METAL
#include "ProgrammableCommon.hpp"
namespace hecl namespace hecl
{ {
namespace Backend namespace Backend
{ {
struct Metal : ProgrammableCommon struct Metal : ProgrammableCommon
{ {
void reset(const IR& ir, Diagnostics& diag); void reset(const IR& ir, Diagnostics& diag);
@ -15,21 +27,21 @@ struct Metal : ProgrammableCommon
std::string makeFrag(const ShaderFunction& lighting=ShaderFunction()) const; std::string makeFrag(const ShaderFunction& lighting=ShaderFunction()) const;
std::string makeFrag(const ShaderFunction& lighting, std::string makeFrag(const ShaderFunction& lighting,
const ShaderFunction& post) const; const ShaderFunction& post) const;
private: private:
std::string GenerateVertInStruct(unsigned col, unsigned uv, unsigned w) const; std::string GenerateVertInStruct(unsigned col, unsigned uv, unsigned w) const;
std::string GenerateVertToFragStruct() const; std::string GenerateVertToFragStruct() const;
std::string GenerateVertUniformStruct(unsigned skinSlots, unsigned texMtxs) const; std::string GenerateVertUniformStruct(unsigned skinSlots, unsigned texMtxs) const;
std::string EmitVec3(const atVec4f& vec) const std::string EmitVec3(const atVec4f& vec) const
{ {
return hecl::Format("float3(%g,%g,%g)", vec.vec[0], vec.vec[1], vec.vec[2]); return hecl::Format("float3(%g,%g,%g)", vec.vec[0], vec.vec[1], vec.vec[2]);
} }
std::string EmitTexGenSource2(TexGenSrc src, int uvIdx) const; std::string EmitTexGenSource2(TexGenSrc src, int uvIdx) const;
std::string EmitTexGenSource4(TexGenSrc src, int uvIdx) const; std::string EmitTexGenSource4(TexGenSrc src, int uvIdx) const;
}; };
} }
} }

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@ -49,26 +49,26 @@ std::string Metal::GenerateVertInStruct(unsigned col, unsigned uv, unsigned w) c
"{\n" "{\n"
" float3 posIn [[ attribute(0) ]];\n" " float3 posIn [[ attribute(0) ]];\n"
" float3 normIn [[ attribute(1) ]];\n"; " float3 normIn [[ attribute(1) ]];\n";
unsigned idx = 2; unsigned idx = 2;
if (col) if (col)
{ {
for (unsigned i=0 ; i<col ; ++i, ++idx) for (unsigned i=0 ; i<col ; ++i, ++idx)
retval += hecl::Format(" float4 colIn%u [[ attribute(%u) ]];\n", i, idx); retval += hecl::Format(" float4 colIn%u [[ attribute(%u) ]];\n", i, idx);
} }
if (uv) if (uv)
{ {
for (unsigned i=0 ; i<uv ; ++i, ++idx) for (unsigned i=0 ; i<uv ; ++i, ++idx)
retval += hecl::Format(" float2 uvIn%u [[ attribute(%u) ]];\n", i, idx); retval += hecl::Format(" float2 uvIn%u [[ attribute(%u) ]];\n", i, idx);
} }
if (w) if (w)
{ {
for (unsigned i=0 ; i<w ; ++i, ++idx) for (unsigned i=0 ; i<w ; ++i, ++idx)
retval += hecl::Format(" float4 weightIn%u [[ attribute(%u) ]];\n", i, idx); retval += hecl::Format(" float4 weightIn%u [[ attribute(%u) ]];\n", i, idx);
} }
return retval + "};\n"; return retval + "};\n";
} }
@ -80,13 +80,13 @@ std::string Metal::GenerateVertToFragStruct() const
" float4 mvpPos [[ position ]];\n" " float4 mvpPos [[ position ]];\n"
" float4 mvPos;\n" " float4 mvPos;\n"
" float4 mvNorm;\n"; " float4 mvNorm;\n";
if (m_tcgs.size()) if (m_tcgs.size())
{ {
for (size_t i=0 ; i<m_tcgs.size() ; ++i) for (size_t i=0 ; i<m_tcgs.size() ; ++i)
retval += hecl::Format(" float2 tcgs%" PRISize ";\n", i); retval += hecl::Format(" float2 tcgs%" PRISize ";\n", i);
} }
return retval + "};\n"; return retval + "};\n";
} }
@ -120,7 +120,7 @@ std::string Metal::makeVert(unsigned col, unsigned uv, unsigned w,
GenerateVertUniformStruct(s, tm) + GenerateVertUniformStruct(s, tm) +
"\nvertex VertToFrag vmain(VertData v [[ stage_in ]], constant HECLVertUniform& vu [[ buffer(2) ]])\n{\n" "\nvertex VertToFrag vmain(VertData v [[ stage_in ]], constant HECLVertUniform& vu [[ buffer(2) ]])\n{\n"
" VertToFrag vtf;\n"; " VertToFrag vtf;\n";
if (s) if (s)
{ {
/* skinned */ /* skinned */
@ -142,7 +142,7 @@ std::string Metal::makeVert(unsigned col, unsigned uv, unsigned w,
" vtf.mvNorm = vu.mvInv[0] * float4(v.normIn, 0.0);\n" " vtf.mvNorm = vu.mvInv[0] * float4(v.normIn, 0.0);\n"
" vtf.mvpPos = vu.proj * vtf.mvPos;\n"; " vtf.mvpPos = vu.proj * vtf.mvPos;\n";
} }
int tcgIdx = 0; int tcgIdx = 0;
for (const TexCoordGen& tcg : m_tcgs) for (const TexCoordGen& tcg : m_tcgs)
{ {
@ -154,7 +154,7 @@ std::string Metal::makeVert(unsigned col, unsigned uv, unsigned w,
EmitTexGenSource4(tcg.m_src, tcg.m_uvIdx).c_str()); EmitTexGenSource4(tcg.m_src, tcg.m_uvIdx).c_str());
++tcgIdx; ++tcgIdx;
} }
return retval + " return vtf;\n}\n"; return retval + " return vtf;\n}\n";
} }
@ -163,21 +163,21 @@ std::string Metal::makeFrag(const ShaderFunction& lighting) const
std::string lightingSrc; std::string lightingSrc;
if (lighting.m_source) if (lighting.m_source)
lightingSrc = lighting.m_source; lightingSrc = lighting.m_source;
std::string texMapDecl; std::string texMapDecl;
if (m_texMapEnd) if (m_texMapEnd)
{ {
for (int i=0 ; i<m_texMapEnd ; ++i) for (int i=0 ; i<m_texMapEnd ; ++i)
texMapDecl += hecl::Format("\n, texture2d<float> tex%u [[ texture(%u) ]]", i, i); texMapDecl += hecl::Format("\n, texture2d<float> tex%u [[ texture(%u) ]]", i, i);
} }
std::string retval = "#include <metal_stdlib>\nusing namespace metal;\n" std::string retval = "#include <metal_stdlib>\nusing namespace metal;\n"
"constexpr sampler samp(address::repeat);\n" + "constexpr sampler samp(address::repeat, filter::linear, mip_filter::linear);\n" +
GenerateVertToFragStruct() + "\n" + GenerateVertToFragStruct() + "\n" +
lightingSrc + "\n" + lightingSrc + "\n" +
"fragment float4 fmain(VertToFrag vtf [[ stage_in ]]" + texMapDecl + ")\n{\n"; "fragment float4 fmain(VertToFrag vtf [[ stage_in ]]" + texMapDecl + ")\n{\n";
if (m_lighting) if (m_lighting)
{ {
if (lighting.m_entry) if (lighting.m_entry)
@ -185,17 +185,17 @@ std::string Metal::makeFrag(const ShaderFunction& lighting) const
else else
retval += " float4 lighting = float4(1.0,1.0,1.0,1.0);\n"; retval += " float4 lighting = float4(1.0,1.0,1.0,1.0);\n";
} }
unsigned sampIdx = 0; unsigned sampIdx = 0;
for (const TexSampling& sampling : m_texSamplings) for (const TexSampling& sampling : m_texSamplings)
retval += hecl::Format(" float4 sampling%u = tex%u.sample(samp, vtf.tcgs%u);\n", retval += hecl::Format(" float4 sampling%u = tex%u.sample(samp, vtf.tcgs%u);\n",
sampIdx++, sampling.mapIdx, sampling.tcgIdx); sampIdx++, sampling.mapIdx, sampling.tcgIdx);
if (m_alphaExpr.size()) if (m_alphaExpr.size())
retval += " return float4(" + m_colorExpr + ", " + m_alphaExpr + ");\n"; retval += " return float4(" + m_colorExpr + ", " + m_alphaExpr + ");\n";
else else
retval += " return float4(" + m_colorExpr + ", 1.0);\n"; retval += " return float4(" + m_colorExpr + ", 1.0);\n";
return retval + "}\n"; return retval + "}\n";
} }
@ -205,28 +205,28 @@ std::string Metal::makeFrag(const ShaderFunction& lighting,
std::string lightingSrc; std::string lightingSrc;
if (lighting.m_source) if (lighting.m_source)
lightingSrc = lighting.m_source; lightingSrc = lighting.m_source;
std::string postSrc; std::string postSrc;
if (post.m_source) if (post.m_source)
postSrc = post.m_source; postSrc = post.m_source;
std::string postEntry; std::string postEntry;
if (post.m_entry) if (post.m_entry)
postEntry = post.m_entry; postEntry = post.m_entry;
std::string texMapDecl; std::string texMapDecl;
if (m_texMapEnd) if (m_texMapEnd)
{ {
for (int i=0 ; i<m_texMapEnd ; ++i) for (int i=0 ; i<m_texMapEnd ; ++i)
texMapDecl += hecl::Format("texture2d<float> tex%u [[ texture(%u) ]],\n", i, i); texMapDecl += hecl::Format("texture2d<float> tex%u [[ texture(%u) ]],\n", i, i);
} }
std::string retval = "#include <metal_stdlib>\nusing namespace metal;\n" std::string retval = "#include <metal_stdlib>\nusing namespace metal;\n"
"constexpr sampler samp(address::repeat);\n" + "constexpr sampler samp(address::repeat, filter::linear, mip_filter::linear);\n" +
GenerateVertToFragStruct() + "\n" + GenerateVertToFragStruct() + "\n" +
lightingSrc + "\n" + lightingSrc + "\n" +
"fragment float4 fmain(VertToFrag vtf [[ stage_in ]],\n" + texMapDecl + ")\n{\n"; "fragment float4 fmain(VertToFrag vtf [[ stage_in ]],\n" + texMapDecl + ")\n{\n";
if (m_lighting) if (m_lighting)
{ {
if (lighting.m_entry) if (lighting.m_entry)
@ -234,17 +234,17 @@ std::string Metal::makeFrag(const ShaderFunction& lighting,
else else
retval += " float4 lighting = float4(1.0,1.0,1.0,1.0);\n"; retval += " float4 lighting = float4(1.0,1.0,1.0,1.0);\n";
} }
unsigned sampIdx = 0; unsigned sampIdx = 0;
for (const TexSampling& sampling : m_texSamplings) for (const TexSampling& sampling : m_texSamplings)
retval += hecl::Format(" float4 sampling%u = tex%u.sample(samp, vtf.tcgs%u);\n", retval += hecl::Format(" float4 sampling%u = tex%u.sample(samp, vtf.tcgs%u);\n",
sampIdx++, sampling.mapIdx, sampling.tcgIdx); sampIdx++, sampling.mapIdx, sampling.tcgIdx);
if (m_alphaExpr.size()) if (m_alphaExpr.size())
retval += " return " + postEntry + "(float4(" + m_colorExpr + ", " + m_alphaExpr + "));\n"; retval += " return " + postEntry + "(float4(" + m_colorExpr + ", " + m_alphaExpr + "));\n";
else else
retval += " return " + postEntry + "(float4(" + m_colorExpr + ", 1.0));\n"; retval += " return " + postEntry + "(float4(" + m_colorExpr + ", 1.0));\n";
return retval + "}\n"; return retval + "}\n";
} }
@ -255,55 +255,55 @@ namespace Runtime
struct MetalBackendFactory : IShaderBackendFactory struct MetalBackendFactory : IShaderBackendFactory
{ {
Backend::Metal m_backend; Backend::Metal m_backend;
boo::MetalDataFactory* m_gfxFactory;
MetalBackendFactory(boo::IGraphicsDataFactory* gfxFactory)
: m_gfxFactory(dynamic_cast<boo::MetalDataFactory*>(gfxFactory)) {}
ShaderCachedData buildShaderFromIR(const ShaderTag& tag, ShaderCachedData buildShaderFromIR(const ShaderTag& tag,
const hecl::Frontend::IR& ir, const hecl::Frontend::IR& ir,
hecl::Frontend::Diagnostics& diag, hecl::Frontend::Diagnostics& diag,
boo::IGraphicsDataFactory::Context& ctx,
boo::IShaderPipeline*& objOut) boo::IShaderPipeline*& objOut)
{ {
if (!m_rtHint) if (!m_rtHint)
Log.report(logvisor::Fatal, Log.report(logvisor::Fatal,
"ShaderCacheManager::setRenderTargetHint must be called before making metal shaders"); "ShaderCacheManager::setRenderTargetHint must be called before making metal shaders");
m_backend.reset(ir, diag); m_backend.reset(ir, diag);
size_t cachedSz = 2; size_t cachedSz = 2;
std::string vertSource = std::string vertSource =
m_backend.makeVert(tag.getColorCount(), tag.getUvCount(), tag.getWeightCount(), m_backend.makeVert(tag.getColorCount(), tag.getUvCount(), tag.getWeightCount(),
tag.getSkinSlotCount(), tag.getTexMtxCount()); tag.getSkinSlotCount(), tag.getTexMtxCount());
cachedSz += vertSource.size() + 1; cachedSz += vertSource.size() + 1;
std::string fragSource = m_backend.makeFrag(); std::string fragSource = m_backend.makeFrag();
cachedSz += fragSource.size() + 1; cachedSz += fragSource.size() + 1;
objOut = objOut =
m_gfxFactory->newShaderPipeline(vertSource.c_str(), fragSource.c_str(), static_cast<boo::MetalDataFactory::Context&>(ctx).
tag.newVertexFormat(m_gfxFactory), m_rtHint, newShaderPipeline(vertSource.c_str(), fragSource.c_str(),
m_backend.m_blendSrc, m_backend.m_blendDst, tag.newVertexFormat(ctx), m_rtHint,
tag.getDepthTest(), tag.getDepthWrite(), m_backend.m_blendSrc, m_backend.m_blendDst,
tag.getBackfaceCulling()); tag.getPrimType(),
if (!*objOut) tag.getDepthTest(), tag.getDepthWrite(),
tag.getBackfaceCulling());
if (!objOut)
Log.report(logvisor::Fatal, "unable to build shader"); Log.report(logvisor::Fatal, "unable to build shader");
ShaderCachedData dataOut(tag, cachedSz); ShaderCachedData dataOut(tag, cachedSz);
athena::io::MemoryWriter w(dataOut.m_data.get(), dataOut.m_sz); athena::io::MemoryWriter w(dataOut.m_data.get(), dataOut.m_sz);
w.writeUByte(atUint8(m_backend.m_blendSrc)); w.writeUByte(atUint8(m_backend.m_blendSrc));
w.writeUByte(atUint8(m_backend.m_blendDst)); w.writeUByte(atUint8(m_backend.m_blendDst));
w.writeString(vertSource); w.writeString(vertSource);
w.writeString(fragSource); w.writeString(fragSource);
return dataOut; return dataOut;
} }
boo::IShaderPipeline* buildShaderFromCache(const ShaderCachedData& data) boo::IShaderPipeline* buildShaderFromCache(const ShaderCachedData& data,
boo::IGraphicsDataFactory::Context& ctx)
{ {
if (!m_rtHint) if (!m_rtHint)
Log.report(logvisor::Fatal, Log.report(logvisor::Fatal,
"ShaderCacheManager::setRenderTargetHint must be called before making metal shaders"); "ShaderCacheManager::setRenderTargetHint must be called before making metal shaders");
const ShaderTag& tag = data.m_tag; const ShaderTag& tag = data.m_tag;
athena::io::MemoryReader r(data.m_data.get(), data.m_sz); athena::io::MemoryReader r(data.m_data.get(), data.m_sz);
boo::BlendFactor blendSrc = boo::BlendFactor(r.readUByte()); boo::BlendFactor blendSrc = boo::BlendFactor(r.readUByte());
@ -311,34 +311,36 @@ struct MetalBackendFactory : IShaderBackendFactory
std::string vertSource = r.readString(); std::string vertSource = r.readString();
std::string fragSource = r.readString(); std::string fragSource = r.readString();
boo::IShaderPipeline* ret = boo::IShaderPipeline* ret =
m_gfxFactory->newShaderPipeline(vertSource.c_str(), fragSource.c_str(), static_cast<boo::MetalDataFactory::Context&>(ctx).
tag.newVertexFormat(m_gfxFactory), m_rtHint, newShaderPipeline(vertSource.c_str(), fragSource.c_str(),
blendSrc, blendDst, tag.newVertexFormat(ctx), m_rtHint,
tag.getDepthTest(), tag.getDepthWrite(), blendSrc, blendDst, tag.getPrimType(),
tag.getBackfaceCulling()); tag.getDepthTest(), tag.getDepthWrite(),
tag.getBackfaceCulling());
if (!ret) if (!ret)
Log.report(logvisor::Fatal, "unable to build shader"); Log.report(logvisor::Fatal, "unable to build shader");
return ret; return ret;
} }
ShaderCachedData buildExtendedShaderFromIR(const ShaderTag& tag, ShaderCachedData buildExtendedShaderFromIR(const ShaderTag& tag,
const hecl::Frontend::IR& ir, const hecl::Frontend::IR& ir,
hecl::Frontend::Diagnostics& diag, hecl::Frontend::Diagnostics& diag,
const std::vector<ShaderCacheExtensions::ExtensionSlot>& extensionSlots, const std::vector<ShaderCacheExtensions::ExtensionSlot>& extensionSlots,
boo::IGraphicsDataFactory::Context& ctx,
FReturnExtensionShader returnFunc) FReturnExtensionShader returnFunc)
{ {
if (!m_rtHint) if (!m_rtHint)
Log.report(logvisor::Fatal, Log.report(logvisor::Fatal,
"ShaderCacheManager::setRenderTargetHint must be called before making metal shaders"); "ShaderCacheManager::setRenderTargetHint must be called before making metal shaders");
m_backend.reset(ir, diag); m_backend.reset(ir, diag);
size_t cachedSz = 2; size_t cachedSz = 2;
std::string vertSource = std::string vertSource =
m_backend.makeVert(tag.getColorCount(), tag.getUvCount(), tag.getWeightCount(), m_backend.makeVert(tag.getColorCount(), tag.getUvCount(), tag.getWeightCount(),
tag.getSkinSlotCount(), tag.getTexMtxCount()); tag.getSkinSlotCount(), tag.getTexMtxCount());
cachedSz += vertSource.size() + 1; cachedSz += vertSource.size() + 1;
std::vector<std::string> fragSources; std::vector<std::string> fragSources;
fragSources.reserve(extensionSlots.size()); fragSources.reserve(extensionSlots.size());
for (const ShaderCacheExtensions::ExtensionSlot& slot : extensionSlots) for (const ShaderCacheExtensions::ExtensionSlot& slot : extensionSlots)
@ -346,16 +348,18 @@ struct MetalBackendFactory : IShaderBackendFactory
fragSources.push_back(m_backend.makeFrag(slot.lighting, slot.post)); fragSources.push_back(m_backend.makeFrag(slot.lighting, slot.post));
cachedSz += fragSources.back().size() + 1; cachedSz += fragSources.back().size() + 1;
boo::IShaderPipeline* ret = boo::IShaderPipeline* ret =
m_gfxFactory->newShaderPipeline(vertSource.c_str(), fragSources.back().c_str(), static_cast<boo::MetalDataFactory::Context&>(ctx).
tag.newVertexFormat(m_gfxFactory), m_rtHint, newShaderPipeline(vertSource.c_str(), fragSources.back().c_str(),
m_backend.m_blendSrc, m_backend.m_blendDst, tag.newVertexFormat(ctx), m_rtHint,
tag.getDepthTest(), tag.getDepthWrite(), m_backend.m_blendSrc, m_backend.m_blendDst,
tag.getBackfaceCulling()); tag.getPrimType(),
tag.getDepthTest(), tag.getDepthWrite(),
tag.getBackfaceCulling());
if (!ret) if (!ret)
Log.report(logvisor::Fatal, "unable to build shader"); Log.report(logvisor::Fatal, "unable to build shader");
returnFunc(ret); returnFunc(ret);
} }
ShaderCachedData dataOut(tag, cachedSz); ShaderCachedData dataOut(tag, cachedSz);
athena::io::MemoryWriter w(dataOut.m_data.get(), dataOut.m_sz); athena::io::MemoryWriter w(dataOut.m_data.get(), dataOut.m_sz);
w.writeUByte(atUint8(m_backend.m_blendSrc)); w.writeUByte(atUint8(m_backend.m_blendSrc));
@ -363,18 +367,19 @@ struct MetalBackendFactory : IShaderBackendFactory
w.writeString(vertSource); w.writeString(vertSource);
for (const std::string src : fragSources) for (const std::string src : fragSources)
w.writeString(src); w.writeString(src);
return dataOut; return dataOut;
} }
void buildExtendedShaderFromCache(const ShaderCachedData& data, void buildExtendedShaderFromCache(const ShaderCachedData& data,
const std::vector<ShaderCacheExtensions::ExtensionSlot>& extensionSlots, const std::vector<ShaderCacheExtensions::ExtensionSlot>& extensionSlots,
boo::IGraphicsDataFactory::Context& ctx,
FReturnExtensionShader returnFunc) FReturnExtensionShader returnFunc)
{ {
if (!m_rtHint) if (!m_rtHint)
Log.report(logvisor::Fatal, Log.report(logvisor::Fatal,
"ShaderCacheManager::setRenderTargetHint must be called before making metal shaders"); "ShaderCacheManager::setRenderTargetHint must be called before making metal shaders");
const ShaderTag& tag = data.m_tag; const ShaderTag& tag = data.m_tag;
athena::io::MemoryReader r(data.m_data.get(), data.m_sz); athena::io::MemoryReader r(data.m_data.get(), data.m_sz);
boo::BlendFactor blendSrc = boo::BlendFactor(r.readUByte()); boo::BlendFactor blendSrc = boo::BlendFactor(r.readUByte());
@ -384,11 +389,12 @@ struct MetalBackendFactory : IShaderBackendFactory
{ {
std::string fragSource = r.readString(); std::string fragSource = r.readString();
boo::IShaderPipeline* ret = boo::IShaderPipeline* ret =
m_gfxFactory->newShaderPipeline(vertSource.c_str(), fragSource.c_str(), static_cast<boo::MetalDataFactory::Context&>(ctx).
tag.newVertexFormat(m_gfxFactory), m_rtHint, newShaderPipeline(vertSource.c_str(), fragSource.c_str(),
blendSrc, blendDst, tag.newVertexFormat(ctx), m_rtHint,
tag.getDepthTest(), tag.getDepthWrite(), blendSrc, blendDst, tag.getPrimType(),
tag.getBackfaceCulling()); tag.getDepthTest(), tag.getDepthWrite(),
tag.getBackfaceCulling());
if (!ret) if (!ret)
Log.report(logvisor::Fatal, "unable to build shader"); Log.report(logvisor::Fatal, "unable to build shader");
returnFunc(ret); returnFunc(ret);
@ -396,11 +402,11 @@ struct MetalBackendFactory : IShaderBackendFactory
} }
}; };
IShaderBackendFactory* _NewMetalBackendFactory(boo::IGraphicsDataFactory* gfxFactory) IShaderBackendFactory* _NewMetalBackendFactory()
{ {
return new struct MetalBackendFactory(gfxFactory); return new struct MetalBackendFactory();
} }
} }
} }