Function SetMeshWriteAttributeParams

engine/rig/src/rig.cpp:1244–1274

    }

    void SetMeshWriteAttributeParams(dmGraphics::WriteAttributeParams* params,
        const dmGraphics::VertexAttributeInfos* attribute_infos,
        dmGraphics::VertexStepFunction step_function,
        const float** world_matrix,
        const float** normal_matrix,
        const float** positions_world_space,
        const float** positions_local_space,
        const float** normals,
        const float** tangents,
        const float** colors,
        const float** texture_transform_2d,
        const float** uv_channels,
        uint32_t uv_channels_count)
    {
        memset(params, 0, sizeof(dmGraphics::WriteAttributeParams));
        params->m_VertexAttributeInfos = attribute_infos;
        params->m_StepFunction         = step_function;

        // Per-primitive channels
        dmGraphics::SetWriteAttributeStreamDesc(&params->m_WorldMatrix, world_matrix, dmGraphics::VertexAttribute::VECTOR_TYPE_MAT4, 1, true);
        dmGraphics::SetWriteAttributeStreamDesc(&params->m_NormalMatrix, normal_matrix, dmGraphics::VertexAttribute::VECTOR_TYPE_MAT4, 1, true);
        dmGraphics::SetWriteAttributeStreamDesc(&params->m_TextureTransform2D, texture_transform_2d, dmGraphics::VertexAttribute::VECTOR_TYPE_MAT3, 1, true);

        // Per-vertex channels
        dmGraphics::SetWriteAttributeStreamDesc(&params->m_PositionsWorldSpace, positions_world_space, dmGraphics::VertexAttribute::VECTOR_TYPE_VEC3, 1, false);
        dmGraphics::SetWriteAttributeStreamDesc(&params->m_PositionsLocalSpace, positions_local_space, dmGraphics::VertexAttribute::VECTOR_TYPE_VEC3, 1, false);
        dmGraphics::SetWriteAttributeStreamDesc(&params->m_Normals, normals, dmGraphics::VertexAttribute::VECTOR_TYPE_VEC3, 1, false);
        dmGraphics::SetWriteAttributeStreamDesc(&params->m_Tangents, tangents, dmGraphics::VertexAttribute::VECTOR_TYPE_VEC4, 1, false);
        dmGraphics::SetWriteAttributeStreamDesc(&params->m_Colors, colors, dmGraphics::VertexAttribute::VECTOR_TYPE_VEC4, 1, false);
        dmGraphics::SetWriteAttributeStreamDesc(&params->m_TexCoords, uv_channels, dmGraphics::VertexAttribute::VECTOR_TYPE_VEC2, uv_channels_count, false);
    }

    static uint8_t* WriteVertexDataByAttributes(const dmRigDDF::Mesh* mesh, const float* positions_world, const float* positions_local, const float* normals, const float* tangents, const dmGraphics::VertexAttributeInfos* attribute_infos, uint32_t vertex_stride, const dmVMath::Matrix4& world_matrix, const dmVMath::Matrix4& normal_matrix, uint8_t* out_write_ptr)
    {