yquake2/ref_vk
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ref_vk/README.md
Yamagi 4b536019c3 Add the vkQuake2 Vulkan renderer ported to YQ2. 
This was first developed in a feature branch in the main yquake2 repo.
It was merged into master in early 2021, but the experiences of the
following month showed that it is not ready for prime time. There're
glitches with 3rd party assets, restarts are still shaky, etc. Having
the code in a separate repo allows us to:

  * Release Vulkan independent if YQ2.
  * Give commit access to contributors interested in Vulkan.

This code is the same as in yquake/yquake2 ecdf912713eef55d6c5d5a772259b44e3fc232c4.
2021-05-26 10:31:01 +02:00

3.5 KiB
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Vulkan Renderer Library for Yamagi Quake II

This is the vkQuake2 vulkan renderer library ported to Yamagi Quake II.

Compilation

You'll need:

  • clang or gcc
  • GNU Make
  • SDL2 with sdl2-config.
  • vulkan-headers.

Type make to compile the library. If the compilation is successfull, the library can be found under release/ref_vk.dll (Windows) or release/ref_vk.so (unixoid systems).

Usage

Copy the library next to your Yamagi Quake II executable. You can select Vulkan through the video menu or by cvar with vid_renderer vk followed by a vid_restart.

Console Variables

  • vk_validation: Toggle validation layers:

    • 0 - disabled (default in Release)
    • 1 - only errors and warnings
    • 2 - best-practices validation

  • vk_strings: Print some basic Vulkan/GPU information.

  • vk_mem: Print dynamic vertex/index/uniform/triangle fan buffer memory usage statistics.

  • vk_device: Specify index of the preferred Vulkan device on systems with multiple GPUs:

    • -1 - prefer first DISCRETE_GPU (default)
    • 0..n - use device #n (full list of devices is returned by vk_strings command)

  • vk_sampleshading: Toggle sample shading for MSAA. (default: 1)

  • vk_flashblend: Toggle the blending of lights onto the environment. (default: 0)

  • vk_polyblend: Blend fullscreen effects: blood, powerups etc. (default: 1)

  • vk_skymip: Toggle the usage of mipmap information for the sky graphics. (default: 0)

  • vk_finish: Inserts a vkDeviceWaitIdle() call on frame render start (default: 0). Don't use this, it's there just for the sake of having a gl_finish equivalent!

  • vk_custom_particles: Toggle particles type:

    • 0 - textured triangles for particle rendering
    • 1 - between using POINT_LIST (default)
    • 2 - textured square for particle rendering

  • vk_particle_size: Rendered particle size. (default: 40)

  • vk_particle_att_a: Intensity of the particle A attribute. (default: 0.01)

  • vk_particle_att_b: Intensity of the particle B attribute. (default: 0)

  • vk_particle_att_c: Intensity of the particle C attribute. (default: 0.01)

  • vk_particle_min_size: The minimum size of a rendered particle. (default: 2)

  • vk_particle_max_size: The maximum size of a rendered particle. (default: 40)

  • vk_picmip: Shrink factor for the textures. (default: 0)

  • vk_pixel_size: Pixel size when rendering the world, used to simulate lower screen resolutions. The value represents the length, in pixels, of the side of each pixel block. For example, with size 2 pixels are 2x2 squares, and at 1600x1200 the image is effectively an upscaled 800x600 image. (default: 1)

  • vk_dynamic: Use dynamic lighting. (default: 1)

  • vk_showtris: Display mesh triangles. (default: 0)

  • vk_lightmap: Display lightmaps. (default: 0)

  • vk_postprocess: Toggle additional color/gamma correction. (default: 1)

  • vk_mip_nearfilter: Use nearest-neighbor filtering for mipmaps. (default: 0)

  • vk_texturemode: Change current texture filtering mode:

    • VK_NEAREST - nearest-neighbor interpolation, no mipmaps
    • VK_LINEAR - linear interpolation, no mipmaps
    • VK_MIPMAP_NEAREST - nearest-neighbor interpolation with mipmaps
    • VK_MIPMAP_LINEAR - linear interpolation with mipmaps (default)

  • vk_lmaptexturemode: Same as vk_texturemode but applied to lightmap textures.

  • vk_underwater: Warp the scene if underwater. Set to 0 to disable the effect. Defaults to 1.