Class: Rendering::SSREffect

Inherits:
Object
  • Object
show all
Includes:
Effect
Defined in:
lib/engine/rendering/post_processing/ssr_effect.rb

Instance Attribute Summary

Attributes included from Effect

#enabled

Instance Method Summary collapse

Constructor Details

#initialize(max_steps: 64, max_ray_distance: 50.0, thickness: 0.5, ray_offset: 2.0) ⇒ SSREffect

Returns a new instance of SSREffect.



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# File 'lib/engine/rendering/post_processing/ssr_effect.rb', line 7

def initialize(max_steps: 64, max_ray_distance: 50.0, thickness: 0.5, ray_offset: 2.0)
  @max_steps = max_steps
  @max_ray_distance = max_ray_distance
  @thickness = thickness
  @ray_offset = ray_offset
end

Instance Method Details

#apply(input_rt, output_rt, screen_quad) ⇒ Object 



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# File 'lib/engine/rendering/post_processing/ssr_effect.rb', line 14

def apply(input_rt, output_rt, screen_quad)
  ensure_textures(input_rt.width, input_rt.height)

  camera = Engine::Camera.instance
  Engine::GL.Disable(Engine::GL::DEPTH_TEST)

  # Pass 1: Render SSR at half resolution
  @ssr_rt.bind
  Engine::GL.Disable(Engine::GL::BLEND)
  Engine::GL.ClearColor(0.0, 0.0, 0.0, 0.0)
  Engine::GL.Clear(Engine::GL::COLOR_BUFFER_BIT)

  ssr_material.set_runtime_texture("screenTexture", input_rt.color_texture)
  ssr_material.set_runtime_texture("depthTexture", PostProcessingEffect.depth_texture)
  ssr_material.set_runtime_texture("normalTexture", PostProcessingEffect.normal_texture)

  ssr_material.set_mat4("inverseVP", camera.inverse_vp_matrix)
  ssr_material.set_mat4("viewProj", camera.matrix)
  ssr_material.set_vec3("cameraPos", camera.position)
  ssr_material.set_float("nearPlane", camera.near)
  ssr_material.set_float("farPlane", camera.far)

  cubemap = RenderPipeline.skybox_cubemap
  ssr_material.set_cubemap("skyboxCubemap", cubemap&.texture)

  screen_quad.draw_with_material(ssr_material)

  # Pass 2: Combine with scene at full resolution
  output_rt.bind
  Engine::GL.Clear(Engine::GL::COLOR_BUFFER_BIT)

  combine_material.set_runtime_texture("screenTexture", input_rt.color_texture)
  combine_material.set_runtime_texture("ssrTexture", @ssr_rt.color_texture)

  screen_quad.draw_with_material(combine_material)
  output_rt
end