push_constants()

void MayaFlux::Core::VKComputePipeline::push_constants	(	vk::CommandBuffer	cmd,
		vk::ShaderStageFlags	stage_flags,
		uint32_t	offset,
		uint32_t	size,
		const void *	data
	)		const

Update push constants.

Parameters

cmd	Command buffer
stage_flags	Shader stages that will access this data
offset	Offset in push constant block (bytes)
size	Size of data (bytes)
data	Pointer to data to copy

Updates push constant data that will be visible to the shader. More efficient than descriptor sets for small, frequently-changing data.

Example: struct Params { float scale; uint32_t iterations; }; Params params = {2.0f, 100}; pipeline.push_constants(cmd, vk::ShaderStageFlagBits::eCompute, 0, sizeof(params), &params);

Definition at line 229 of file VKComputePipeline.cpp.

{
    if (!m_layout) {
        MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
            "Cannot push constants without pipeline layout");
        return;
    }
 
    if (!data) {
        MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
            "Cannot push null data");
        return;
    }
 
    if (size == 0) {
        MF_WARN(Journal::Component::Core, Journal::Context::GraphicsBackend,
            "Pushing zero-sized constant data");
        return;
    }
 
    cmd.pushConstants(m_layout, stage_flags, offset, size, data);
}

References MayaFlux::Journal::Core, MayaFlux::Journal::GraphicsBackend, m_layout, MF_ERROR, and MF_WARN.