[PATCH i-g-t, v8 3/5] tests/kms_colorop_helper: Cast pixel values to double

[Swati Sharma <swati2.sharma@intel.com>]

Explicitly cast transformed pixel channel values to double before
scaling by UINT_MAX to avoid overflows for values approaching 1.0.

v2: -improve commit message (Chaitanya)

Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
Reviewed-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
---
 tests/kms_colorop_helper.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tests/kms_colorop_helper.c b/tests/kms_colorop_helper.c
index 76728b47b..152e90f26 100644
--- a/tests/kms_colorop_helper.c
+++ b/tests/kms_colorop_helper.c
@@ -300,9 +300,9 @@ static void fill_custom_1dlut(igt_display_t *display, kms_colorop_t *colorop)
 
 		colorop->transform(&pixel);
 
-		colorop->lut1d->lut[i].red = pixel.r * UINT_MAX;
-		colorop->lut1d->lut[i].green = pixel.g * UINT_MAX;
-		colorop->lut1d->lut[i].blue = pixel.b * UINT_MAX;
+		colorop->lut1d->lut[i].red = (double)pixel.r * UINT_MAX;
+		colorop->lut1d->lut[i].green = (double)pixel.g * UINT_MAX;
+		colorop->lut1d->lut[i].blue = (double)pixel.b * UINT_MAX;
 	}
 }
 
-- 
2.25.1