vkCmdSetBlendConstants

To dynamically set and change the blend constants, call:

void vkCmdSetBlendConstants(
    VkCommandBuffer commandBuffer,
    const float blendConstants[4]);

pub fn cmd_set_blend_constants(
    command_buffer: vk::CommandBuffer,
    blend_constants: [f32; 4],
);

• commandBuffer is the command buffer into which the command will be recorded.
• blendConstants is a pointer to an array of four values specifying the R_c, G_c, B_c, and A_c components of the blend constant color used in blending, depending on the blend factor.

This command sets blend constants for subsequent drawing commands when when drawing using shader objects, or the graphics pipeline is created with VK_DYNAMIC_STATE_BLEND_CONSTANTS set in VkPipelineDynamicStateCreateInfo::pDynamicStates. Otherwise, this state is specified by the VkPipelineColorBlendStateCreateInfo::blendConstants values used to create the currently active pipeline.