mirror of https://github.com/AxioDL/metaforce.git
443 lines
17 KiB
C++
443 lines
17 KiB
C++
#include "hecl/Backend/Metal.hpp"
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#include <athena/MemoryReader.hpp>
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#include <athena/MemoryWriter.hpp>
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#include <boo/graphicsdev/Metal.hpp>
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static logvisor::Module Log("hecl::Backend::Metal");
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namespace hecl::Backend {
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std::string Metal::EmitTexGenSource2(TexGenSrc src, int uvIdx) const {
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switch (src) {
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case TexGenSrc::Position:
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return "objPos.xy\n";
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case TexGenSrc::Normal:
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return "objNorm.xy\n";
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case TexGenSrc::UV:
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return hecl::Format("v.uvIn%u", uvIdx);
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default:
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break;
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}
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return std::string();
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}
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std::string Metal::EmitTexGenSource4(TexGenSrc src, int uvIdx) const {
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switch (src) {
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case TexGenSrc::Position:
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return "float4(objPos.xyz, 1.0)\n";
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case TexGenSrc::Normal:
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return "float4(objNorm.xyz, 1.0)\n";
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case TexGenSrc::UV:
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return hecl::Format("float4(v.uvIn%u, 0.0, 1.0)", uvIdx);
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default:
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break;
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}
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return std::string();
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}
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std::string Metal::GenerateVertInStruct(unsigned col, unsigned uv, unsigned w) const {
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std::string retval =
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"struct VertData\n"
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"{\n"
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" float3 posIn [[ attribute(0) ]];\n"
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" float3 normIn [[ attribute(1) ]];\n";
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unsigned idx = 2;
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if (col) {
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for (unsigned i = 0; i < col; ++i, ++idx)
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retval += hecl::Format(" float4 colIn%u [[ attribute(%u) ]];\n", i, idx);
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}
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if (uv) {
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for (unsigned i = 0; i < uv; ++i, ++idx)
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retval += hecl::Format(" float2 uvIn%u [[ attribute(%u) ]];\n", i, idx);
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}
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if (w) {
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for (unsigned i = 0; i < w; ++i, ++idx)
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retval += hecl::Format(" float4 weightIn%u [[ attribute(%u) ]];\n", i, idx);
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}
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return retval + "};\n";
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}
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std::string Metal::GenerateVertToFragStruct(size_t extTexCount, bool reflectionCoords) const {
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std::string retval =
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"struct VertToFrag\n"
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"{\n"
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" float4 mvpPos [[ position ]];\n"
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" float4 mvPos;\n"
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" float4 mvNorm;\n";
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if (m_tcgs.size())
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for (size_t i = 0; i < m_tcgs.size(); ++i)
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retval += hecl::Format(" float2 tcgs%" PRISize ";\n", i);
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if (extTexCount)
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for (size_t i = 0; i < extTexCount; ++i)
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retval += hecl::Format(" float2 extTcgs%" PRISize ";\n", i);
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if (reflectionCoords)
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retval +=
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" float2 reflectTcgs0;\n"
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" float2 reflectTcgs1;\n"
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" float reflectAlpha;\n";
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return retval + "};\n";
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}
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std::string Metal::GenerateVertUniformStruct(unsigned skinSlots) const {
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std::string retval;
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if (skinSlots == 0) {
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retval =
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"struct HECLVertUniform\n"
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"{\n"
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" float4x4 mv;\n"
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" float4x4 mvInv;\n"
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" float4x4 proj;\n"
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"};\n"
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"struct TexMtxs {float4x4 mtx; float4x4 postMtx;};\n"
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"struct ReflectTexMtxs {float4x4 indMtx; float4x4 reflectMtx; float reflectAlpha;};\n";
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} else {
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retval = hecl::Format(
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"struct HECLVertUniform\n"
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"{\n"
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" float4x4 objs[%u];\n"
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" float4x4 objsInv[%u];\n"
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" float4x4 mv;\n"
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" float4x4 mvInv;\n"
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" float4x4 proj;\n"
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"};\n"
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"struct TexMtxs {float4x4 mtx; float4x4 postMtx;};\n"
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"struct ReflectTexMtxs {float4x4 indMtx; float4x4 reflectMtx; float reflectAlpha;};\n",
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skinSlots, skinSlots);
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}
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return retval;
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}
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std::string Metal::GenerateFragOutStruct() const {
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return "struct FragOut\n"
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"{\n"
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" float4 color [[ color(0) ]];\n"
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" //float depth [[ depth(less) ]];\n"
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"};\n";
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}
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std::string Metal::GenerateAlphaTest() const {
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return " if (out.color.a < 0.25)\n"
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" {\n"
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" discard_fragment();\n"
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" }\n";
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}
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std::string Metal::GenerateReflectionExpr(ReflectionType type) const {
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switch (type) {
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case ReflectionType::None:
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default:
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return "float3(0.0, 0.0, 0.0)";
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case ReflectionType::Simple:
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return "reflectionTex.sample(reflectSamp, vtf.reflectTcgs1).rgb * vtf.reflectAlpha";
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case ReflectionType::Indirect:
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return "reflectionTex.sample(reflectSamp, (reflectionIndTex.sample(samp, vtf.reflectTcgs0).rg - "
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"float2(0.5, 0.5)) * float2(0.5, 0.5) + vtf.reflectTcgs1).rgb * vtf.reflectAlpha";
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}
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}
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void Metal::reset(const IR& ir, Diagnostics& diag) {
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/* Common programmable interpretation */
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ProgrammableCommon::reset(ir, diag, "Metal");
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}
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std::string Metal::makeVert(unsigned col, unsigned uv, unsigned w, unsigned s, size_t extTexCount,
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const TextureInfo* extTexs, ReflectionType reflectionType) const {
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std::string tmStr = ",\nconstant TexMtxs* texMtxs [[ buffer(3) ]]";
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if (reflectionType != ReflectionType::None)
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tmStr += ",\nconstant ReflectTexMtxs& reflectMtxs [[ buffer(5) ]]";
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std::string retval = "#include <metal_stdlib>\nusing namespace metal;\n" + GenerateVertInStruct(col, uv, w) + "\n" +
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GenerateVertToFragStruct(extTexCount, reflectionType != ReflectionType::None) + "\n" +
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GenerateVertUniformStruct(s) +
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"\nvertex VertToFrag vmain(VertData v [[ stage_in ]],\n"
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" constant HECLVertUniform& vu [[ buffer(2) ]]" +
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tmStr +
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")\n"
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"{\n"
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" VertToFrag vtf;\n";
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if (s) {
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/* skinned */
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retval +=
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" float4 objPos = float4(0.0,0.0,0.0,0.0);\n"
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" float4 objNorm = float4(0.0,0.0,0.0,0.0);\n";
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for (size_t i = 0; i < s; ++i)
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retval += hecl::Format(
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" objPos += (vu.objs[%" PRISize "] * float4(v.posIn, 1.0)) * v.weightIn%" PRISize "[%" PRISize
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"];\n"
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" objNorm += (vu.objsInv[%" PRISize "] * float4(v.normIn, 1.0)) * v.weightIn%" PRISize "[%" PRISize "];\n",
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i, i / 4, i % 4, i, i / 4, i % 4);
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retval +=
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" objPos[3] = 1.0;\n"
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" objNorm = float4(normalize(objNorm.xyz), 0.0);\n"
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" vtf.mvPos = vu.mv * objPos;\n"
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" vtf.mvNorm = float4(normalize((vu.mvInv * objNorm).xyz), 0.0);\n"
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" vtf.mvpPos = vu.proj * vtf.mvPos;\n";
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} else {
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/* non-skinned */
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retval +=
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" float4 objPos = float4(v.posIn, 1.0);\n"
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" float4 objNorm = float4(v.normIn, 0.0);\n"
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" vtf.mvPos = vu.mv * objPos;\n"
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" vtf.mvNorm = vu.mvInv * objNorm;\n"
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" vtf.mvpPos = vu.proj * vtf.mvPos;\n";
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}
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retval += " float4 tmpProj;\n";
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int tcgIdx = 0;
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for (const TexCoordGen& tcg : m_tcgs) {
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if (tcg.m_mtx < 0)
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retval += hecl::Format(" vtf.tcgs%u = %s;\n", tcgIdx, EmitTexGenSource2(tcg.m_src, tcg.m_uvIdx).c_str());
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else
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retval += hecl::Format(
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" tmpProj = texMtxs[%u].postMtx * float4(%s((texMtxs[%u].mtx * %s).xyz), 1.0);\n"
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" vtf.tcgs%u = (tmpProj / tmpProj.w).xy;\n",
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tcg.m_mtx, tcg.m_norm ? "normalize" : "", tcg.m_mtx, EmitTexGenSource4(tcg.m_src, tcg.m_uvIdx).c_str(),
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tcgIdx);
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++tcgIdx;
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}
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for (int i = 0; i < extTexCount; ++i) {
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const TextureInfo& extTex = extTexs[i];
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if (extTex.mtxIdx < 0)
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retval += hecl::Format(" vtf.extTcgs%u = %s;\n", i, EmitTexGenSource2(extTex.src, extTex.uvIdx).c_str());
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else
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retval += hecl::Format(
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" tmpProj = texMtxs[%u].postMtx * float4(%s((texMtxs[%u].mtx * %s).xyz), 1.0);\n"
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" vtf.extTcgs%u = (tmpProj / tmpProj.w).xy;\n",
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extTex.mtxIdx, extTex.normalize ? "normalize" : "", extTex.mtxIdx,
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EmitTexGenSource4(extTex.src, extTex.uvIdx).c_str(), i);
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}
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if (reflectionType != ReflectionType::None)
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retval +=
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" vtf.reflectTcgs0 = normalize((reflectMtxs.indMtx * float4(v.posIn, 1.0)).xz) * float2(0.5, 0.5) + "
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"float2(0.5, 0.5);\n"
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" vtf.reflectTcgs1 = (reflectMtxs.reflectMtx * float4(v.posIn, 1.0)).xy;\n"
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" vtf.reflectAlpha = reflectMtxs.reflectAlpha;\n";
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return retval + " return vtf;\n}\n";
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}
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std::string Metal::makeFrag(size_t blockCount, const char** blockNames, bool alphaTest, ReflectionType reflectionType,
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BlendFactor srcFactor, BlendFactor dstFactor, const Function& lighting) const {
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std::string lightingSrc;
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if (!lighting.m_source.empty())
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lightingSrc = lighting.m_source;
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std::string texMapDecl;
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if (m_texMapEnd)
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for (int i = 0; i < m_texMapEnd; ++i)
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texMapDecl += hecl::Format(",\ntexture2d<float> tex%u [[ texture(%u) ]]", i, i);
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if (reflectionType == ReflectionType::Indirect)
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texMapDecl += hecl::Format(
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",\ntexture2d<float> reflectionIndTex [[ texture(%u) ]]\n"
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",\ntexture2d<float> reflectionTex [[ texture(%u) ]]\n",
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m_texMapEnd, m_texMapEnd + 1);
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else if (reflectionType == ReflectionType::Simple)
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texMapDecl += hecl::Format(",\ntexture2d<float> reflectionTex [[ texture(%u) ]]\n", m_texMapEnd);
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std::string blockCall;
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for (size_t i = 0; i < blockCount; ++i) {
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texMapDecl += hecl::Format(",\nconstant %s& block%" PRISize " [[ buffer(%" PRISize ") ]]", blockNames[i], i, i + 4);
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if (blockCall.size())
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blockCall += ", ";
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blockCall += hecl::Format("block%" PRISize, i);
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}
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std::string retval =
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std::string("#include <metal_stdlib>\nusing namespace metal;\n") + "#define BLEND_SRC_" +
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BlendFactorToDefine(srcFactor, m_blendSrc) + "\n" + "#define BLEND_DST_" +
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BlendFactorToDefine(dstFactor, m_blendDst) + "\n" +
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GenerateVertToFragStruct(0, reflectionType != ReflectionType::None) + "\n" + GenerateFragOutStruct() + "\n" +
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lightingSrc + "\n" +
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"fragment FragOut fmain(VertToFrag vtf [[ stage_in ]],\n"
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"sampler samp [[ sampler(0) ]], sampler clampSamp [[ sampler(1) ]], sampler reflectSamp [[ sampler(2) ]]" +
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texMapDecl +
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")\n"
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"{\n"
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" FragOut out;\n";
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if (!lighting.m_source.empty()) {
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retval +=
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" float4 colorReg0 = block0.colorReg0;\n"
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" float4 colorReg1 = block0.colorReg1;\n"
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" float4 colorReg2 = block0.colorReg2;\n"
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" float4 mulColor = block0.mulColor;\n"
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" float4 addColor = block0.addColor;\n";
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} else {
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retval +=
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" float4 colorReg0 = float4(1.0, 1.0, 1.0, 1.0);\n"
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" float4 colorReg1 = float4(1.0, 1.0, 1.0, 1.0);\n"
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" float4 colorReg2 = float4(1.0, 1.0, 1.0, 1.0);\n"
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" float4 mulColor = float4(1.0, 1.0, 1.0, 1.0);\n"
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" float4 addColor = float4(0.0, 0.0, 0.0, 0.0);\n";
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}
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if (m_lighting) {
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if (!lighting.m_entry.empty())
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retval += hecl::Format(" float4 lighting = %s(%s, vtf.mvPos.xyz, normalize(vtf.mvNorm.xyz), vtf);\n",
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lighting.m_entry.data(), blockCall.c_str());
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else
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retval += " float4 lighting = float4(1.0,1.0,1.0,1.0);\n";
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}
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unsigned sampIdx = 0;
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for (const TexSampling& sampling : m_texSamplings)
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retval += hecl::Format(" float4 sampling%u = tex%u.sample(samp, vtf.tcgs%u);\n", sampIdx++, sampling.mapIdx,
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sampling.tcgIdx);
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std::string reflectionExpr = GenerateReflectionExpr(reflectionType);
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if (m_alphaExpr.size())
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retval += " out.color = float4(" + m_colorExpr + " + " + reflectionExpr + ", " + m_alphaExpr +
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") * mulColor + addColor;\n";
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else
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retval += " out.color = float4(" + m_colorExpr + " + " + reflectionExpr + ", 1.0) * mulColor + addColor;\n";
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return retval + (alphaTest ? GenerateAlphaTest() : "") +
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" return out;\n"
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"}\n";
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}
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std::string Metal::makeFrag(size_t blockCount, const char** blockNames, bool alphaTest, ReflectionType reflectionType,
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BlendFactor srcFactor, BlendFactor dstFactor, const Function& lighting,
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const Function& post, size_t extTexCount, const TextureInfo* extTexs,
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bool diffuseOnly) const {
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std::string lightingSrc;
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if (!lighting.m_source.empty())
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lightingSrc = lighting.m_source;
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std::string postSrc;
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if (!post.m_source.empty())
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postSrc = post.m_source;
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std::string lightingEntry;
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if (!lighting.m_entry.empty())
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lightingEntry = lighting.m_entry;
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std::string postEntry;
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if (!post.m_entry.empty())
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postEntry = post.m_entry;
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int extTexBits = 0;
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for (int i = 0; i < extTexCount; ++i) {
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const TextureInfo& extTex = extTexs[i];
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extTexBits |= 1 << extTex.mapIdx;
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}
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std::string texMapDecl;
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if (m_texMapEnd)
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for (int i = 0; i < m_texMapEnd; ++i)
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if (!(extTexBits & (1 << i)))
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texMapDecl += hecl::Format(",\ntexture2d<float> tex%u [[ texture(%u) ]]", i, i);
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if (reflectionType == ReflectionType::Indirect)
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texMapDecl += hecl::Format(
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",\ntexture2d<float> reflectionIndTex [[ texture(%u) ]]\n"
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",\ntexture2d<float> reflectionTex [[ texture(%u) ]]\n",
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m_texMapEnd, m_texMapEnd + 1);
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else if (reflectionType == ReflectionType::Simple)
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texMapDecl += hecl::Format(",\ntexture2d<float> reflectionTex [[ texture(%u) ]]\n", m_texMapEnd);
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std::string extTexCall;
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int extTexBits2 = 0;
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for (int i = 0; i < extTexCount; ++i) {
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const TextureInfo& extTex = extTexs[i];
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if (!(extTexBits2 & (1 << extTex.mapIdx))) {
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if (extTexCall.size())
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extTexCall += ", ";
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extTexCall += hecl::Format("tex%u", extTex.mapIdx);
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texMapDecl += hecl::Format(",\ntexture2d<float> tex%u [[ texture(%u) ]]", extTex.mapIdx, extTex.mapIdx);
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extTexBits2 |= 1 << extTex.mapIdx;
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}
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}
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std::string blockCall;
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for (size_t i = 0; i < blockCount; ++i) {
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texMapDecl += hecl::Format(",\nconstant %s& block%" PRISize " [[ buffer(%" PRISize ") ]]", blockNames[i], i, i + 4);
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if (blockCall.size())
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blockCall += ", ";
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blockCall += hecl::Format("block%" PRISize, i);
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}
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std::string retval =
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std::string("#include <metal_stdlib>\nusing namespace metal;\n") + "#define BLEND_SRC_" +
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BlendFactorToDefine(srcFactor, m_blendSrc) + "\n" + "#define BLEND_DST_" +
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BlendFactorToDefine(dstFactor, m_blendDst) + "\n" +
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GenerateVertToFragStruct(extTexCount, reflectionType != ReflectionType::None) + "\n" + GenerateFragOutStruct() +
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"\n" + lightingSrc + "\n" + postSrc + "\n" +
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"fragment FragOut fmain(VertToFrag vtf [[ stage_in ]],\n"
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"sampler samp [[ sampler(0) ]], sampler clampSamp [[ sampler(1) ]], sampler reflectSamp [[ sampler(2) ]]" +
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texMapDecl +
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")\n"
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"{\n"
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" FragOut out;\n";
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if (!lighting.m_source.empty()) {
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retval +=
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" float4 colorReg0 = block0.colorReg0;\n"
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" float4 colorReg1 = block0.colorReg1;\n"
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" float4 colorReg2 = block0.colorReg2;\n"
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" float4 mulColor = block0.mulColor;\n"
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" float4 addColor = block0.addColor;\n";
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} else {
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retval +=
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" float4 colorReg0 = float4(1.0, 1.0, 1.0, 1.0);\n"
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" float4 colorReg1 = float4(1.0, 1.0, 1.0, 1.0);\n"
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" float4 colorReg2 = float4(1.0, 1.0, 1.0, 1.0);\n"
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" float4 mulColor = float4(1.0, 1.0, 1.0, 1.0);\n"
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" float4 addColor = float4(0.0, 0.0, 0.0, 0.0);\n";
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}
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if (m_lighting) {
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if (!lighting.m_entry.empty()) {
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retval +=
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" float4 lighting = " + lightingEntry + "(" + blockCall +
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", vtf.mvPos.xyz, normalize(vtf.mvNorm.xyz), vtf" +
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(!strncmp(lighting.m_entry.data(), "EXT", 3) ? (extTexCall.size() ? (", samp, clampSamp," + extTexCall) : "")
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: "") +
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");\n";
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} else
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retval += " float4 lighting = float4(1.0,1.0,1.0,1.0);\n";
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}
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unsigned sampIdx = 0;
|
|
for (const TexSampling& sampling : m_texSamplings)
|
|
retval += hecl::Format(" float4 sampling%u = tex%u.sample(samp, vtf.tcgs%u);\n", sampIdx++, sampling.mapIdx,
|
|
sampling.tcgIdx);
|
|
|
|
std::string reflectionExpr = GenerateReflectionExpr(reflectionType);
|
|
|
|
if (m_alphaExpr.size() && !diffuseOnly) {
|
|
retval += " out.color = " + postEntry + "(" +
|
|
(postEntry.size() ? ("vtf, " + (blockCall.size() ? (blockCall + ", ") : "") +
|
|
(!strncmp(post.m_entry.data(), "EXT", 3)
|
|
? (extTexCall.size() ? ("samp, clampSamp," + extTexCall + ", ") : "")
|
|
: ""))
|
|
: "") +
|
|
"float4(" + m_colorExpr + " + " + reflectionExpr + ", " + m_alphaExpr + ")) * mulColor + addColor;\n";
|
|
} else {
|
|
retval += " out.color = " + postEntry + "(" +
|
|
(postEntry.size() ? ("vtf, " + (blockCall.size() ? (blockCall + ", ") : "") +
|
|
(!strncmp(post.m_entry.data(), "EXT", 3)
|
|
? (extTexCall.size() ? ("samp, clampSamp," + extTexCall + ", ") : "")
|
|
: ""))
|
|
: "") +
|
|
"float4(" + (diffuseOnly ? m_diffuseColorExpr : m_colorExpr) + " + " + reflectionExpr +
|
|
", 1.0)) * mulColor + addColor;\n";
|
|
}
|
|
|
|
return retval + (alphaTest ? GenerateAlphaTest() : "") +
|
|
" return out;\n"
|
|
"}\n";
|
|
}
|
|
|
|
} // namespace hecl::Backend
|