nCine::GLUniformBlockCache class
#include <nCine/Graphics/GL/GLUniformBlockCache.h>

Caches the contents of a uniform block and uploads it through a buffer object.

Holds a host-side data buffer mirroring a GLUniformBlock and manages a GLUniformCache for each of the block's member uniforms, pointing each one into the appropriate offset of the shared buffer. The contents are uploaded to the GL as a single uniform buffer object (UBO).

Constructors, destructors, conversion operators

GLUniformBlockCache()
Creates an empty cache not associated with any uniform block.
GLUniformBlockCache(GLUniformBlock* uniformBlock) explicit
Creates a cache for the specified uniform block.

Public functions

auto uniformBlock() const -> const GLUniformBlock*
Returns the uniform block described by this cache.
auto GetIndex() const -> GLuint
Wrapper around GLUniformBlock::GetIndex().
auto GetBindingIndex() const -> GLuint
Wrapper around GLUniformBlock::GetBindingIndex().
auto GetSize() const -> GLint
Wrapper around GLUniformBlock::GetSize().
auto GetAlignAmount() const -> std::uint8_t
Wrapper around GLUniformBlock::GetAlignAmount().
auto GetDataPointer() -> GLubyte*
Returns the host-side data buffer mirroring the block.
auto GetDataPointer() const -> const GLubyte*
Returns the host-side data buffer mirroring the block.
void SetDataPointer(GLubyte* dataPointer)
Sets the host-side data buffer and repoints each member uniform cache into it.
auto usedSize() const -> GLint
Returns how many bytes of the cache are uploaded to the UBO.
void SetUsedSize(GLint usedSize)
Sets how many bytes of the cache are uploaded to the UBO.
auto CopyData(std::uint32_t destIndex, const GLubyte* src, std::uint32_t numBytes) -> bool
Copies a range of bytes into the data buffer and returns whether it succeeded.
auto CopyData(const GLubyte* src) -> bool
Copies the whole used size from the source into the data buffer.
auto GetUniform(StringView name) -> GLUniformCache*
Returns the member uniform cache with the specified name, or nullptr if not found.
void SetBlockBinding(GLuint blockBinding)
Wrapper around GLUniformBlock::SetBlockBinding().