diff options
Diffstat (limited to 'libs/preview_nif/src/NifExtensions.h')
| -rw-r--r-- | libs/preview_nif/src/NifExtensions.h | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/libs/preview_nif/src/NifExtensions.h b/libs/preview_nif/src/NifExtensions.h new file mode 100644 index 0000000..cd529e5 --- /dev/null +++ b/libs/preview_nif/src/NifExtensions.h @@ -0,0 +1,236 @@ +#pragma once + +#include <QOpenGLFunctions> +#include <NifFile.hpp> +#include <cstdint> +#include <cstring> + +struct SLSF1 +{ + SLSF1() = delete; + + enum BSLightingShaderFlags1 : std::uint32_t + { + Specular = 1U << 0, + Skinned = 1U << 1, + TempRefraction = 1U << 2, + VertexAlpha = 1U << 3, + GreyscaleToPaletteColor = 1U << 4, + GreyscaleToPaletteAlpha = 1U << 5, + UseFalloff = 1U << 6, + EnvironmentMapping = 1U << 7, + ReceiveShadows = 1U << 8, + CastShadows = 1U << 9, + FacegenDetailMap = 1U << 10, + Parallax = 1U << 11, + ModelSpaceNormals = 1U << 12, + NonProjectiveShadows = 1U << 13, + Landscape = 1U << 14, + Refraction = 1U << 15, + FireRefraction = 1U << 16, + EyeEnvironmentMapping = 1U << 17, + HairSoftLighting = 1U << 18, + ScreendoorAlphaFade = 1U << 19, + LocalmapHideSecret = 1U << 20, + FaceGenRGBTint = 1U << 21, + OwnEmit = 1U << 22, + ProjectedUV = 1U << 23, + MultipleTextures = 1U << 24, + RemappableTextures = 1U << 25, + Decal = 1U << 26, + DynamicDecal = 1U << 27, + ParallaxOcclusion = 1U << 28, + ExternalEmittance = 1U << 29, + SoftEffect = 1U << 30, + ZBufferTest = 1U << 31, + }; +}; + +struct SLSF2 +{ + SLSF2() = delete; + + enum BSLightingShaderFlags2 : std::uint32_t + { + ZBufferWrite = 1U << 0, + LODLandscape = 1U << 1, + LODObjects = 1U << 2, + NoFade = 1U << 3, + DoubleSided = 1U << 4, + VertexColors = 1U << 5, + GlowMap = 1U << 6, + AssumeShadowmask = 1U << 7, + PackedTangent = 1U << 8, + MultiIndexSnow = 1U << 9, + VertexLighting = 1U << 10, + UniformScale = 1U << 11, + FitSlope = 1U << 12, + Billboard = 1U << 13, + NoLODLandBlend = 1U << 14, + EnvMapLightFade = 1U << 15, + Wireframe = 1U << 16, + WeaponBlood = 1U << 17, + HideOnLocalMap = 1U << 18, + PremultAlpha = 1U << 19, + CloudLOD = 1U << 20, + AnisotropicLighting = 1U << 21, + NoTransparencyMultisampling = 1U << 22, + Unused01 = 1U << 23, + MultiLayerParallax = 1U << 24, + SoftLighting = 1U << 25, + RimLighting = 1U << 26, + BackLighting = 1U << 27, + Unused02 = 1U << 28, + TreeAnim = 1U << 29, + EffectLighting = 1U << 30, + HDLODObjects = 1U << 31, + }; +}; + +struct TriShape +{ + TriShape() = delete; + + enum NiAVObjectFlags : std::uint32_t + { + Hidden = 1U << 0, + SelectiveUpdate = 1U << 1, + SelectiveUpdateTransforms = 1U << 2, + SelectiveUpdateController = 1U << 3, + SelectiveUpdateRigid = 1U << 4, + DisplayUIObject = 1U << 5, + DisableSorting = 1U << 6, + SelectiveUpdateTransformsOverride = 1U << 7, + SaveExternalGeomData = 1U << 9, + NoDecals = 1U << 10, + AlwaysDraw = 1U << 11, + MeshLODFO4 = 1U << 12, + FixedBound = 1U << 13, + TopFadeNode = 1U << 14, + IgnoreFade = 1U << 15, + NoAnimSyncX = 1U << 16, + NoAnimSyncY = 1U << 17, + NoAnimSyncZ = 1U << 18, + NoAnimSyncS = 1U << 19, + NoDismember = 1U << 20, + NoDismemberValidity = 1U << 21, + RenderUse = 1U << 22, + MaterialsApplied = 1U << 23, + HighDetail = 1U << 24, + ForceUpdate = 1U << 25, + PreProcessedNode = 1U << 26, + MeshLODSkyrim = 1U << 27, + }; +}; + +struct NiAlphaPropertyFlags +{ +public: + NiAlphaPropertyFlags(std::uint16_t flags = 0) + { + std::memcpy(this, &flags, sizeof(NiAlphaPropertyFlags)); + } + + bool isAlphaBlendEnabled() + { + return m_AlphaBlendEnable; + } + + GLenum sourceBlendingFactor() + { + return getBlendMode(m_SrcBlendMode); + } + + GLenum destinationBlendingFactor() + { + return getBlendMode(m_DstBlendMode); + } + + bool isAlphaTestEnabled() + { + return m_AlphaTestEnable; + } + + GLenum alphaTestMode() + { + return getTestMode(m_AlphaTestMode); + } + + bool isTriangleSortDisabled() + { + return m_NoSort; + } + +private: + static std::uint32_t getBlendMode(std::uint16_t flags) + { + switch (flags) { + case 0: return GL_ONE; + case 1: return GL_ZERO; + case 2: return GL_SRC_COLOR; + case 3: return GL_ONE_MINUS_SRC_COLOR; + case 4: return GL_DST_COLOR; + case 5: return GL_ONE_MINUS_DST_COLOR; + case 6: return GL_SRC_ALPHA; + case 7: return GL_ONE_MINUS_SRC_ALPHA; + case 8: return GL_DST_ALPHA; + case 9: return GL_ONE_MINUS_DST_ALPHA; + default: return GL_ONE; + }; + } + + static std::uint32_t getTestMode(std::uint16_t flags) + { + switch (flags) { + case 0: return GL_ALWAYS; + case 1: return GL_LESS; + case 2: return GL_EQUAL; + case 3: return GL_LEQUAL; + case 4: return GL_GREATER; + case 5: return GL_NOTEQUAL; + case 6: return GL_GEQUAL; + case 7: return GL_NEVER; + default: return GL_ALWAYS; + } + }; + + std::uint16_t m_AlphaBlendEnable : 1; + std::uint16_t m_SrcBlendMode : 4; + std::uint16_t m_DstBlendMode : 4; + std::uint16_t m_AlphaTestEnable : 1; + std::uint16_t m_AlphaTestMode : 3; + std::uint16_t m_NoSort : 1; +}; +static_assert(sizeof(NiAlphaPropertyFlags) == 2); + +inline nifly::MatTransform GetShapeTransformToGlobal( + nifly::NifFile* nifFile, + nifly::NiShape* niShape) +{ + nifly::MatTransform xform = niShape->GetTransformToParent(); + nifly::NiNode* parent = nifFile->GetParentNode(niShape); + while (parent) { + xform = parent->GetTransformToParent().ComposeTransforms(xform); + parent = nifFile->GetParentNode(parent); + } + + return xform; +} + +inline nifly::BoundingSphere GetBoundingSphere( + nifly::NifFile* nifFile, + nifly::NiShape* niShape) +{ + if (auto vertices = nifFile->GetVertsForShape(niShape)) { + auto bounds = nifly::BoundingSphere(*vertices); + + auto xform = GetShapeTransformToGlobal(nifFile, niShape); + + bounds.center = xform.ApplyTransform(bounds.center); + bounds.radius = xform.ApplyTransformToDist(bounds.radius); + return bounds; + } + else { + return nifly::BoundingSphere(); + } +} |