#include <VertexLayout.hpp>

Public Attributes
std::vector< VertexAttribute >	attributes
std::string	gbufferShaderStem
std::string	shaderStem
std::string	shadowShaderStem
uint32_t	stride = 0
std::string	transparentShaderStem

Detailed Description

A complete custom vertex layout plus the shader stems that consume it. Register once at startup; the handle keys pipelines and mesh creation. Shader stems are consumed by the Vulkan backend; OpenGL instead binds the layout's attributes to its own fixed shader programs.

Fill one of these when your geometry does not fit the engine's built-in vertex type: packed voxel vertices, extra UV sets, per-vertex instance data, anything you want to define yourself. stride is the size of one vertex in bytes and each VertexAttribute gives a shader location, a component format, and a byte offset inside that vertex.

The four shader stems name the pipeline variants the format participates in. An empty stem skips that pass entirely, so a format with no shadowShaderStem casts no shadows and a format with no gbufferShaderStem is forward only. There is no fallback shader: if a named stem fails to load, the backend logs an error and skips that pass for this format.

struct VoxelVertex {
    float    position[3];
    float    normal[3];
    float    uv[2];
    uint32_t packedLight;
};
 
Sleak::VertexLayoutDesc desc;
desc.stride = sizeof(VoxelVertex);
desc.attributes = {
    {0, Sleak::VertexAttribFormat::Float3,
     offsetof(VoxelVertex, position)},
    {1, Sleak::VertexAttribFormat::Float3,
     offsetof(VoxelVertex, normal)},
    {2, Sleak::VertexAttribFormat::Float2, offsetof(VoxelVertex, uv)},
    {3, Sleak::VertexAttribFormat::UInt1,
     offsetof(VoxelVertex, packedLight)},
};
desc.shaderStem            = "flat_shader";
desc.shadowShaderStem      = "shadow_depth_voxel";
desc.gbufferShaderStem     = "gbuffer_voxel";
desc.transparentShaderStem = "water_shader";
 
Sleak::VertexFormatHandle handle =
    Sleak::VertexFormatRegistry::Register(desc);

See also: VertexFormatRegistry, VertexAttribute, VertexAttribFormat, MeshBatch

Definition at line 74 of file VertexLayout.hpp.

Member Data Documentation

◆ attributes

std::vector<VertexAttribute> Sleak::VertexLayoutDesc::attributes

Definition at line 76 of file VertexLayout.hpp.

◆ gbufferShaderStem

std::string Sleak::VertexLayoutDesc::gbufferShaderStem

Definition at line 81 of file VertexLayout.hpp.

◆ shaderStem

std::string Sleak::VertexLayoutDesc::shaderStem

Definition at line 77 of file VertexLayout.hpp.

◆ shadowShaderStem

std::string Sleak::VertexLayoutDesc::shadowShaderStem

Definition at line 79 of file VertexLayout.hpp.

◆ stride

uint32_t Sleak::VertexLayoutDesc::stride = 0

Definition at line 75 of file VertexLayout.hpp.

◆ transparentShaderStem

std::string Sleak::VertexLayoutDesc::transparentShaderStem

Definition at line 83 of file VertexLayout.hpp.

Public Attributes