design

RenderTarget is the main data structure for a render pass. They contain all the information to create and recreate an vk::Image and vk::ImageView.

When creating a pass you need to provide a render resources object which contains the details for a particular pass: colour (+depth), shaders, etc.

An example of how to craete a graph with a single pass with a colour target

wren::GraphBuilder builder(ctx);
builder.add_pass("mesh",
        resouces, 
        [](wren::RenderPass& pass, vk::CommandBuffer& cmd){})
       .compile();

plan

A render pass can be built with a shader and a render target. A shorthand can be used for specifying the swapchain as the render target, maybe by omitting the target. When adding a new pass, by default the 'input' will be the last pass's target. A render pass needs to have a single output image. We should be able to swap out the currently acquired swapchain image for the last render pass.

3d render pipeline

notes

Depth is implemented with reverse depth (supposedly better accuracy). This means the depth values are 0 the farther away and 1 the closer they are. When creating the pipeline it also means the VK_COMPARE_OP must be GREATER(_OR_EQUAL).

design

plan

3d render pipeline

notes

references