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Add frontface culling support to Metal

This commit is contained in:
Jack Andersen 2017-03-10 11:07:29 -10:00
parent ca20aea834
commit 73891af56a
2 changed files with 15 additions and 4 deletions
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17
lib/graphicsdev/Metal.mm
View File

@ -554,12 +554,23 @@ class MetalShaderPipeline : public IShaderPipeline
MetalShareableShader::Token&& frag, MetalShareableShader::Token&& frag,
const MetalVertexFormat* vtxFmt, NSUInteger targetSamples, const MetalVertexFormat* vtxFmt, NSUInteger targetSamples,
BlendFactor srcFac, BlendFactor dstFac, Primitive prim, BlendFactor srcFac, BlendFactor dstFac, Primitive prim,
bool depthTest, bool depthWrite, bool backfaceCulling) bool depthTest, bool depthWrite, CullMode culling)
: m_drawPrim(PRIMITIVE_TABLE[int(prim)]), m_vtxFmt(vtxFmt), : m_drawPrim(PRIMITIVE_TABLE[int(prim)]), m_vtxFmt(vtxFmt),
m_vert(std::move(vert)), m_frag(std::move(frag)) m_vert(std::move(vert)), m_frag(std::move(frag))
{ {
if (backfaceCulling) switch (culling)
{
case CullMode::None:
default:
m_cullMode = MTLCullModeNone;
break;
case CullMode::Backface:
m_cullMode = MTLCullModeBack; m_cullMode = MTLCullModeBack;
break;
case CullMode::Frontface:
m_cullMode = MTLCullModeFront;
break;
}
MTLRenderPipelineDescriptor* desc = [MTLRenderPipelineDescriptor new]; MTLRenderPipelineDescriptor* desc = [MTLRenderPipelineDescriptor new];
desc.vertexFunction = m_vert.get().m_shader; desc.vertexFunction = m_vert.get().m_shader;
@ -1219,7 +1230,7 @@ IShaderPipeline* MetalDataFactory::Context::newShaderPipeline(const char* vertSo
MetalShaderPipeline* retval = new MetalShaderPipeline(factory.m_ctx, std::move(vertShader), std::move(fragShader), MetalShaderPipeline* retval = new MetalShaderPipeline(factory.m_ctx, std::move(vertShader), std::move(fragShader),
static_cast<const MetalVertexFormat*>(vtxFmt), targetSamples, static_cast<const MetalVertexFormat*>(vtxFmt), targetSamples,
srcFac, dstFac, prim, depthTest, depthWrite, backfaceCulling); srcFac, dstFac, prim, depthTest, depthWrite, culling);
MetalDataFactoryImpl::m_deferredData->m_SPs.emplace_back(retval); MetalDataFactoryImpl::m_deferredData->m_SPs.emplace_back(retval);
return retval; return retval;
} }

2
test/main.cpp
View File

@ -403,7 +403,7 @@ struct TestApplicationCallback : IApplicationCallback
pipeline = metalF.newShaderPipeline(VS, FS, vfmt, 1, pipeline = metalF.newShaderPipeline(VS, FS, vfmt, 1,
BlendFactor::One, BlendFactor::Zero, Primitive::TriStrips, BlendFactor::One, BlendFactor::Zero, Primitive::TriStrips,
true, true, false); true, true, boo::CullMode::None);
} }
#endif #endif