metaforce/Shaders/shader_CModelShadersGLSL.cpp

218 lines
8.4 KiB
C++

#include <cstdint>
#include <cstdlib>
#include <sstream>
#include "shader_CModelShaders.hpp"
#include "Runtime/Graphics/Shaders/CModelShaders.hpp"
extern "C" const uint8_t CMODELSHADERS_COMMON_GLSL[];
extern "C" size_t CMODELSHADERS_COMMON_GLSL_SZ;
static std::string_view CMODELSHADERS_COMMON_GLSL_SV((char*)CMODELSHADERS_COMMON_GLSL, CMODELSHADERS_COMMON_GLSL_SZ);
extern "C" const uint8_t CMODELSHADERS_VERT_GLSL[];
extern "C" size_t CMODELSHADERS_VERT_GLSL_SZ;
static std::string_view CMODELSHADERS_VERT_GLSL_SV((char*)CMODELSHADERS_VERT_GLSL, CMODELSHADERS_VERT_GLSL_SZ);
extern "C" const uint8_t CMODELSHADERS_FRAG_GLSL[];
extern "C" size_t CMODELSHADERS_FRAG_GLSL_SZ;
static std::string_view CMODELSHADERS_FRAG_GLSL_SV((char*)CMODELSHADERS_FRAG_GLSL, CMODELSHADERS_FRAG_GLSL_SZ);
using BlendMaterial = SModelShadersInfo::Material::BlendMaterial;
using TexCoordSource = BlendMaterial::TexCoordSource;
static std::string_view EmitTexGenSource2(TexCoordSource src) {
switch (src) {
case TexCoordSource::Position:
return "objPos.xy"sv;
case TexCoordSource::Normal:
return "objNorm.xy"sv;
case TexCoordSource::Tex0:
return "uvIn[0]"sv;
case TexCoordSource::Tex1:
return "uvIn[1]"sv;
case TexCoordSource::Tex2:
return "uvIn[2]"sv;
case TexCoordSource::Tex3:
return "uvIn[3]"sv;
case TexCoordSource::Tex4:
return "uvIn[4]"sv;
case TexCoordSource::Tex5:
return "uvIn[5]"sv;
case TexCoordSource::Tex6:
return "uvIn[6]"sv;
case TexCoordSource::Tex7:
return "uvIn[7]"sv;
default:
assert(false && "Unknown source type");
break;
}
return {};
}
static std::string_view EmitTexGenSource4(TexCoordSource src) {
switch (src) {
case TexCoordSource::Position:
return "vec4(objPos.xyz, 1.0)"sv;
case TexCoordSource::Normal:
return "vec4(objNorm.xyz, 1.0)"sv;
case TexCoordSource::Tex0:
return "vec4(uvIn[0], 0.0, 1.0)"sv;
case TexCoordSource::Tex1:
return "vec4(uvIn[1], 0.0, 1.0)"sv;
case TexCoordSource::Tex2:
return "vec4(uvIn[2], 0.0, 1.0)"sv;
case TexCoordSource::Tex3:
return "vec4(uvIn[3], 0.0, 1.0)"sv;
case TexCoordSource::Tex4:
return "vec4(uvIn[4], 0.0, 1.0)"sv;
case TexCoordSource::Tex5:
return "vec4(uvIn[5], 0.0, 1.0)"sv;
case TexCoordSource::Tex6:
return "vec4(uvIn[6], 0.0, 1.0)"sv;
case TexCoordSource::Tex7:
return "vec4(uvIn[7], 0.0, 1.0)"sv;
default:
assert(false && "Unknown source type");
break;
}
return {};
}
static std::string _BuildVS(const SModelShadersInfo& info) {
std::stringstream vertOut;
vertOut << CMODELSHADERS_COMMON_GLSL_SV;
vertOut << "#define URDE_COL_SLOTS "sv << unsigned(info.m_tag.getColorCount()) << '\n';
vertOut << "#define URDE_UV_SLOTS "sv << unsigned(info.m_tag.getUvCount()) << '\n';
vertOut << "#define URDE_SKIN_SLOTS "sv << unsigned(info.m_tag.getSkinSlotCount()) << '\n';
vertOut << "#define URDE_WEIGHT_SLOTS "sv << unsigned(info.m_tag.getWeightCount()) << '\n';
vertOut << "#define URDE_TCG_EXPR "sv;
using UVAnimType = BlendMaterial::UVAnimType;
using PassType = BlendMaterial::PassType;
int mtxIdx = 0;
for (const auto& chunk : info.m_material.chunks) {
if (auto passChunk = chunk.get_if<SModelShadersInfo::Material::PASS>()) {
if (passChunk->type != PassType::IndirectTex) {
std::string_view tpStr = BlendMaterial::PassTypeToString(passChunk->type);
if (passChunk->uvAnimType == UVAnimType::Invalid) {
vertOut << "vtf."sv << tpStr << "Uv = "sv << EmitTexGenSource2(passChunk->source) << ";"sv;
} else {
vertOut << "tmpProj = texMtxs["sv << mtxIdx << "].postMtx * vec4("sv <<
(passChunk->shouldNormalizeUv() ? "normalize"sv : ""sv) << "((texMtxs["sv << mtxIdx << "].mtx * "sv <<
EmitTexGenSource4(passChunk->source) << ").xyz), 1.0);"sv <<
"vtf."sv << tpStr << "Uv = (tmpProj / tmpProj.w).xy;"sv;
}
}
} else if (auto clrChunk = chunk.get_if<SModelShadersInfo::Material::CLR>()) {
std::string_view tpStr = BlendMaterial::PassTypeToString(clrChunk->type);
vertOut << "vtf."sv << tpStr << "Uv = vec2(0.0,0.0);"sv;
}
}
if (!info.m_extension.noReflection && info.m_tag.getReflectionType() != hecl::Backend::ReflectionType::None)
vertOut << "vtf.dynReflectionUvs[0] = normalize((indMtx * vec4(objPos.xyz, 1.0)).xz) * vec2(0.5, 0.5) + vec2(0.5, 0.5);"
"vtf.dynReflectionUvs[1] = (reflectMtx * vec4(objPos.xyz, 1.0)).xy;"
"vtf.dynReflectionAlpha = reflectAlpha;";
for (size_t i = 0; i < info.m_extension.texCount; ++i) {
const auto& extTex = info.m_extension.texs[i];
if (extTex.mtxIdx == 0xff)
vertOut << "vtf.extUvs["sv << i << "] = "sv << EmitTexGenSource2(extTex.src) << ";"sv;
else
vertOut << "tmpProj = texMtxs["sv << unsigned(extTex.mtxIdx) << "].postMtx * vec4("sv <<
(extTex.normalize ? "normalize"sv : ""sv) << "((texMtxs["sv << unsigned(extTex.mtxIdx) << "].mtx * "sv <<
EmitTexGenSource4(extTex.src) << ").xyz), 1.0);"sv <<
"vtf.extUvs["sv << i << "] = (tmpProj / tmpProj.w).xy;"sv;
}
vertOut << '\n';
vertOut << CMODELSHADERS_VERT_GLSL_SV;
return vertOut.str();
}
static std::string _BuildFS(const SModelShadersInfo& info) {
std::stringstream fragOut;
fragOut << CMODELSHADERS_COMMON_GLSL_SV;
fragOut << "#define URDE_MAX_LIGHTS " _XSTR(URDE_MAX_LIGHTS) "\n";
fragOut << "#define " << info.m_extension.shaderMacro << "\n";
using ShaderType = BlendMaterial::ShaderType;
switch (info.m_material.shaderType) {
case ShaderType::RetroShader:
fragOut << "#define RETRO_SHADER\n"; break;
case ShaderType::RetroDynamicShader:
fragOut << "#define RETRO_DYNAMIC_SHADER\n"; break;
case ShaderType::RetroDynamicAlphaShader:
fragOut << "#define RETRO_DYNAMIC_ALPHA_SHADER\n"; break;
case ShaderType::RetroDynamicCharacterShader:
fragOut << "#define RETRO_DYNAMIC_CHARACTER_SHADER\n"; break;
default:
assert(false && "Unknown shader type");
break;
}
fragOut << "#define BLEND_SRC_"sv << hecl::Backend::BlendFactorToDefine(
hecl::Backend::BlendFactor(info.m_additionalInfo.srcFac), hecl::Backend::BlendFactor::One) << '\n';
fragOut << "#define BLEND_DST_"sv << hecl::Backend::BlendFactorToDefine(
hecl::Backend::BlendFactor(info.m_additionalInfo.dstFac), hecl::Backend::BlendFactor::Zero) << '\n';
using PassType = BlendMaterial::PassType;
for (const auto& chunk : info.m_material.chunks) {
if (auto passChunk = chunk.get_if<SModelShadersInfo::Material::PASS>()) {
if (passChunk->alpha) {
std::string_view tpStr = BlendMaterial::PassTypeToString(passChunk->type);
fragOut << "#define ALPHA_" << tpStr << '\n';
}
} else if (auto clrChunk = chunk.get_if<SModelShadersInfo::Material::CLR>()) {
if (clrChunk->type == PassType::Alpha)
fragOut << "#define ALPHA_alpha\n";
}
}
if (info.m_tag.getAlphaTest() || info.m_extension.forceAlphaTest)
fragOut << "#define URDE_ALPHA_TEST\n";
if (info.m_extension.diffuseOnly)
fragOut << "#define URDE_DIFFUSE_ONLY\n";
if (!info.m_extension.noReflection) {
if (info.m_tag.getReflectionType() == hecl::Backend::ReflectionType::Indirect)
fragOut << "#define URDE_REFLECTION_INDIRECT\n"sv;
else if (info.m_tag.getReflectionType() == hecl::Backend::ReflectionType::Simple)
fragOut << "#define URDE_REFLECTION_SIMPLE\n"sv;
}
fragOut << CMODELSHADERS_FRAG_GLSL_SV;
return fragOut.str();
}
template <>
std::string StageObject_CModelShaders<hecl::PlatformType::OpenGL, hecl::PipelineStage::Vertex>::BuildShader(
const SModelShadersInfo& in) {
return _BuildVS(in);
}
template <>
std::string StageObject_CModelShaders<hecl::PlatformType::Vulkan, hecl::PipelineStage::Vertex>::BuildShader(
const SModelShadersInfo& in) {
return _BuildVS(in);
}
template <>
std::string StageObject_CModelShaders<hecl::PlatformType::NX, hecl::PipelineStage::Vertex>::BuildShader(
const SModelShadersInfo& in) {
return _BuildVS(in);
}
template <>
std::string StageObject_CModelShaders<hecl::PlatformType::OpenGL, hecl::PipelineStage::Fragment>::BuildShader(
const SModelShadersInfo& in) {
return _BuildFS(in);
}
template <>
std::string StageObject_CModelShaders<hecl::PlatformType::Vulkan, hecl::PipelineStage::Fragment>::BuildShader(
const SModelShadersInfo& in) {
return _BuildFS(in);
}
template <>
std::string StageObject_CModelShaders<hecl::PlatformType::NX, hecl::PipelineStage::Fragment>::BuildShader(
const SModelShadersInfo& in) {
return _BuildFS(in);
}