Grass.h 文件参考

#include "common/Export.h"
#include "common/Result.h"
#include "common/PcgPhotoModeApply.h"
#include "graphics/Shader.h"
#include <cstdint>
#include <string>
#include <vector>
#include <glm/glm.hpp>

浏览源代码.

类
struct	eve::graphics::grass::GrassFoliageSettings
	Pcg-style static foliage surface controls packed into the grass shader profile. Values are copied during upload; colors are linear RGB. 更多...
struct	eve::graphics::grass::TerrainDetailOverwriteSettings
	Runtime terrain-detail overrides kept distinct from foliage material settings. 更多...
struct	eve::graphics::grass::Point
	Point public API. 更多...
struct	eve::graphics::grass::SampleParams
	SampleParams public API. 更多...
struct	eve::graphics::grass::BillboardMesh
	BillboardMesh public API. 更多...
struct	eve::graphics::grass::PackedAtlasInfo
	Layout of a packed 2x2-per-variant sway atlas (4 grass + 2 leaf typical). 更多...
class	eve::graphics::GrassField
	Dense grass + sparse dark tufts on a mesh. Caller owns GrassField*; GPU Mesh / Shader / Texture are owned by Graphics. 更多...
struct	eve::graphics::GrassField::BakeParams
	BakeParams public API. 更多...

命名空间
namespace	eve
	Build metadata (engine git commit, build time, third-party version).
namespace	eve::image
namespace	eve::graphics
	卡牌游戏 UI 工具模块：工厂 + 脚本绑定入口。 功能参考 ycarowr/UiCard：扇形手牌布局、抽牌/洗牌、悬浮放大、拖拽到落牌区、 敌方手牌（背面/偷看）、费用不足置灰，以及可实时调节的布局参数。 数据模型与渲染/交互逻辑见 CardTypes.h。
namespace	eve::graphics::grass
	t3ssel8r-style stylized grass.

枚举
enum class	eve::graphics::grass::TerrainDetailQuality {   eve::graphics::grass::VeryLow64 , eve::graphics::grass::Low32 , eve::graphics::grass::Medium16 , eve::graphics::grass::High8 ,   eve::graphics::grass::VeryHigh4 , eve::graphics::grass::Ultra2 }
	Pcg quality category derived from detailResolutionPerPatch. 更多...

函数
EVENGINE_API_BACKENDS TerrainDetailQuality	eve::graphics::grass::terrainDetailQuality (int resolutionPerPatch) noexcept
	Classify a Unity terrain detail patch resolution with Pcg's exact default mapping.
EVENGINE_API_BACKENDS Result< int >	eve::graphics::grass::applyTerrainDetailOverwrite (GrassFoliageSettings &foliage, const TerrainDetailOverwriteSettings &settings)
	Validate and copy TerrainDetailOverwrite distances/density into a foliage profile atomically.
std::vector< Point >	eve::graphics::grass::samplePoisson (const float *posXYZ, const float *nrmXYZ, int vertexCount, const uint32_t *indices, int indexCount, const SampleParams &params={})
	Fast Poisson-disk / dart-throwing blue noise on a triangle mesh.
std::vector< Point >	eve::graphics::grass::sampleHalton (const float *posXYZ, const float *nrmXYZ, int vertexCount, const uint32_t *indices, int indexCount, int count, uint32_t seed=1, float minSlopeDot=0.25f)
	Area-weighted Halton samples (deterministic, evenly spread).
EVENGINE_API_BACKENDS BillboardMesh	eve::graphics::grass::buildBillboards (const std::vector< Point > &points, float width=0.62f, float height=0.95f, bool alwaysDark=false)
	Expand a unit rectangle per point. Vertex layout: pos = grass root uv = quad corner in [0,1]^2 (0.5, 0) is the root normal.x = animation id, normal.y = height scale. normal.z uses legacy 0/1 for uniform width; independent width w encodes -w for dense or 1+w for dark grass. A normalized tint encodes RGB8 as negative normal.x; legacy tint {-1,-1,-1} retains id. The shader derives animation identity from the local root for tinted points, so model transforms do not change the wind phase. Alpha remains texture-owned.
int	eve::graphics::grass::swayFrame (float time, float frameDuration, uint32_t instanceId, int frameCount=4)
	Discrete 4-frame index with a per-instance phase offset.
void	eve::graphics::grass::makeSwayAtlasRGBA (int frameW, int frameH, int frames, std::vector< uint8_t > &rgbaOut)
	Procedural 4-frame fallback atlas (horizontal strip). GPU paths should load authored 2x2 PNG masks via packSwayAtlasRGBA / createSwayAtlasFromFiles.
int	eve::graphics::grass::swayAtlasWidth (int frameW, int frames)
	Sway atlas width.
int	eve::graphics::grass::swayAtlasHeight (int frameH)
	Sway atlas height.
Texture *	eve::graphics::grass::createSwayAtlas (Graphics *gfx, int frameW=64, int frameH=64, int frames=4)
	Creates sway atlas.
void	eve::graphics::grass::packSwayAtlasRGBA (const std::vector< std::string > &grassFiles, const std::vector< std::string > &leafFiles, std::vector< uint8_t > &rgbaOut, PackedAtlasInfo &info)
	Load white-on-black (or RGBA) 2x2 sway PNGs and pack them into one atlas.
Texture *	eve::graphics::grass::createSwayAtlasFromFiles (Graphics *gfx, const std::vector< std::string > &grassFiles, const std::vector< std::string > &leafFiles, PackedAtlasInfo *infoOut=nullptr)
	Creates sway atlas from files.
Shader *	eve::graphics::grass::createShader (Graphics *gfx)
	Creates shader.
EVENGINE_API_BACKENDS void	eve::graphics::grass::bindDefaults (Shader *shader)
	Binds defaults.
void	eve::graphics::grass::bindLayer (Shader *shader, bool alwaysDark)
	Binds layer.
void	eve::graphics::grass::bindAtlasLayout (Shader *shader, const PackedAtlasInfo &info)
	Binds atlas layout.
EVENGINE_API_BACKENDS void	eve::graphics::grass::bindFoliage (Shader *shader, const GrassFoliageSettings &settings)
	Select the static foliage profile and copy its validated surface parameters.
void	eve::graphics::grass::setTime (Shader *shader, float seconds)
	Sets the time.
void	eve::graphics::grass::setFrameDuration (Shader *shader, float seconds)
	Sets the frame duration.
EVENGINE_API_BACKENDS int	eve::graphics::grass::paramCount ()
	Param count.
EVENGINE_API_BACKENDS std::string	eve::graphics::grass::paramName (int index)
	Param name.
void	eve::graphics::grass::makePlane (float sizeX, float sizeZ, int segX, int segZ, std::vector< float > &posXYZ, std::vector< float > &nrmXYZ, std::vector< uint32_t > &indices)
	Unit XZ plane (Y-up) for tests / demos.