Work on CMapWorld rendering

Runtime/Graphics/Shaders/CMapSurfaceShaderMetal.cpp

@@ -0,0 +1,83 @@
+#include "CMapSurfaceShader.hpp"
+#include "TShader.hpp"
+
+namespace urde
+{
+
+static const char* VS =
+"#include <metal_stdlib>\n"
+"using namespace metal;\n"
+"struct VertData\n"
+"{\n"
+"    float4 posIn [[ attribute(0) ]];\n"
+"};\n"
+"\n"
+"struct MapSurfaceUniform\n"
+"{\n"
+"    float4x4 xf;\n"
+"    float4 color;\n"
+"};\n"
+"\n"
+"struct VertToFrag\n"
+"{\n"
+"    float4 position [[ position ]];\n"
+"    float4 color;\n"
+"};\n"
+"\n"
+"vertex VertToFrag vmain(VertData v [[ stage_in ]], constant MapSurfaceUniform& msu [[ buffer(2) ]])\n"
+"{\n"
+"    VertToFrag vtf;\n"
+"    vtf.color = msu.color;\n"
+"    vtf.position = msu.xf * float4(v.posIn.xyz, 1.0);\n"
+"    return vtf;\n"
+"}\n";
+
+static const char* FS =
+"#include <metal_stdlib>\n"
+"using namespace metal;\n"
+"struct VertToFrag\n"
+"{\n"
+"    float4 position [[ position ]];\n"
+"    float4 color;\n"
+"};\n"
+"\n"
+"fragment float4 fmain(VertToFrag vtf [[ stage_in ]])\n"
+"{\n"
+"    return vtf.color;\n"
+"}\n";
+
+URDE_DECL_SPECIALIZE_SHADER(CMapSurfaceShader)
+
+static boo::IVertexFormat* s_VtxFmt = nullptr;
+static boo::IShaderPipeline* s_Pipeline = nullptr;
+
+struct CMapSurfaceShaderMetalDataBindingFactory : TShader<CMapSurfaceShader>::IDataBindingFactory
+{
+    boo::IShaderDataBinding* BuildShaderDataBinding(boo::IGraphicsDataFactory::Context& ctx,
+                                                    CMapSurfaceShader& filter)
+    {
+        boo::MetalDataFactory::Context& cctx = static_cast<boo::MetalDataFactory::Context&>(ctx);
+
+        boo::IGraphicsBuffer* bufs[] = {filter.m_uniBuf};
+        filter.m_dataBind = cctx.newShaderDataBinding(s_Pipeline, s_VtxFmt,
+            filter.m_vbo, nullptr, filter.m_ibo, 1, bufs,
+            nullptr, nullptr, nullptr, 0, nullptr, nullptr, nullptr);
+        return filter.m_dataBind;
+    }
+};
+
+TShader<CMapSurfaceShader>::IDataBindingFactory*
+CMapSurfaceShader::Initialize(boo::MetalDataFactory::Context& ctx)
+{
+    const boo::VertexElementDescriptor VtxVmt[] =
+    {
+        {nullptr, nullptr, boo::VertexSemantic::Position4}
+    };
+    s_VtxFmt = ctx.newVertexFormat(1, VtxVmt);
+    s_Pipeline = ctx.newShaderPipeline(VS, FS, s_VtxFmt, CGraphics::g_ViewportSamples,
+        boo::BlendFactor::SrcAlpha, boo::BlendFactor::InvSrcAlpha, boo::Primitive::TriStrips,
+        boo::ZTest::LEqual, false, true, false, boo::CullMode::Backface);
+    return new CMapSurfaceShaderMetalDataBindingFactory;
+}
+
+}