Pass:send

Edit

Sends a value to a variable in the Pass's active Shader. The active shader is changed using using Pass:setShader.

Pass:send(name, buffer, offset, extent)
Pass:send(name, texture)
Pass:send(name, sampler)
Pass:send(name, constant)
Pass:send(binding, buffer, offset, extent)
Pass:send(binding, texture)
Pass:send(binding, sampler)

Notes

Shader variables can be in different "sets". Variables changed by this function must be in set #2, because LÖVR uses set #0 and set #1 internally.

The new value will persist until a new shader is set that uses a different "type" for the binding number of the variable. See Pass:setShader for more details.

Example

function lovr.load()
  shader = lovr.graphics.newShader([[
    layout(set = 2, binding = 0) uniform sampler mySampler;
    layout(set = 2, binding = 1) uniform Colors { vec4 colors[256]; };
    layout(set = 2, binding = 2) uniform texture2D rocks;

    vec4 lovrmain() {
      return DefaultPosition;
    }
  ]], 'unlit')

  clampler = lovr.graphics.newSampler({ wrap = 'clamp' })
  colorBuffer = lovr.graphics.newBuffer(256, 'vec4')
  rockTexture = lovr.graphics.newTexture('rocks.jpg')
end

function lovr.draw(pass)
  pass:setShader(shader)
  pass:send('mySampler', clampler)
  pass:send('Colors', colorBuffer)
  pass:send('rocks', rockTexture)
  -- Draw
end

See also

• Pass