mitchmindtree / cbm8032_to_vulkan Goto Github PK

I noticed recently that nannou 0.15 has some issues with recent vulkan drivers for intel on Linux where the window just shows a flickering white rather than the intended content. Updating to 0.16 has fixed this for myself and multiple other nannou+linux users, so leaving this as a reminder for myself (or anyone else) to change the nannou dependency to "0.16" as I believe the current branch is somewhere in nannou 0.15, prior to these fixes.

That is, 40 to the top and 40 to the bottom.

This will be essential during testing and hopefully mean we can eventually swap out the example buffers for the real serial data stream very easily.

• Add a decay_buffer.
• Setup the renderpass to:
  1. Update the decay_buffer: If the value sampled from the texture is greater than 0.5, write the sustain value. Otherwise, write black with the user specified alpha colour.
  2. Update the swapchain image: Sample the max between the sampler output and the decay_buffer output.

This way we can go from submitting 8000 vertices (4 for each character) down to 2000 vertices.

Instance data need only require an index associated with the character to be drawn.

"../src/intel/isl/isl_storage_image.c:196: isl_lower_storage_image_format: Assertion `!"Unknown image format"' failed."

A similar error was reported by a DXVK user https://bugs.freedesktop.org/show_bug.cgi?id=107238

Another vulkano user also run into the error a few months back vulkano-rs/vulkano#1157

This has shown up somehow in the last 24 hours, so it must have been one of the commits since this one. Curiously though, none of these commits change anything to do with image formats or usage bits.

• Grab the image from the Henke team.
• Upload the texture to a single vk::ImmutableImage during setup.
• Create a lookup table from character byte values to texture coordinate regions.