message: Use 'int' for window coordinates
diff: @@ -107,10 +107,10 @@ inline R make_primary_rays(
  R /* */,
  pixel_sampler::uniform_type /* */,
  Sampler& samp,
  - unsigned x,
  - unsigned y,
  - size_t width,
  - size_t height,
  + int x,
  + int y,
  + int width,
  + int height,
  Camera const& cam
  )
  {
  @@ -133,10 +133,10 @@ inline R make_primary_rays(
  R /* */,
  pixel_sampler::jittered_type /* */,
  Sampler& samp,
  - unsigned x,
  - unsigned y,
  - size_t width,
  - size_t height,
  + int x,
  + int y,
  + int width,
  + int height,
  Camera const& cam
  )
  {
  @@ -162,10 +162,10 @@ inline array<R, 2> make_primary_rays(
  R /* */,
  pixel_sampler::ssaa_type<2> /* */,
  Sampler& samp,
  - unsigned x,
  - unsigned y,
  - size_t width,
  - size_t height,
  + int x,
  + int y,
  + int width,
  + int height,
  Camera const& cam
  )
  {
  @@ -187,10 +187,10 @@ inline array<R, 4> make_primary_rays(
  R /* */,
  pixel_sampler::ssaa_type<4> /* */,
  Sampler& samp,
  - unsigned x,
  - unsigned y,
  - size_t width,
  - size_t height,
  + int x,
  + int y,
  + int width,
  + int height,
  Camera const& cam
  )
  {
  @@ -214,10 +214,10 @@ inline array<R, 8> make_primary_rays(
  R /* */,
  pixel_sampler::ssaa_type<8> /* */,
  Sampler& samp,
  - unsigned x,
  - unsigned y,
  - size_t width,
  - size_t height,
  + int x,
  + int y,
  + int width,
  + int height,
  Camera const& cam
  )
  {
  @@ -250,10 +250,10 @@ inline array<R, Num> make_primary_rays(
  R /* */,
  PxSamplerT /* */,
  Sampler& samp,
  - unsigned x,
  - unsigned y,
  - size_t width,
  - size_t height,
  + int x,
  + int y,
  + int width,
  + int height,
  Camera const& cam
  )
  {
  