progress on getting textures working

1 files changed, 22 insertions, 7 deletions

diff --git a/src/rodeo_math.c b/src/rodeo_math.c
index 4985cd1..6406f6a 100644
--- a/src/rodeo_math.c
+++ b/src/rodeo_math.c
@@ -5,12 +5,27 @@
 // system
 #include <stdint.h>
 
-uint32_t
-rodeo_rgba_to_uint32(const rodeo_rgba_t color)
+// when casting from float to int(example):
+// 20.50-21.00 rounds up to 21
+// 20.00-20.49 rounds down to 20
+rodeo_RGBA8_t
+rodeo_RGBAFloat_to_RGBA8(const rodeo_RGBAFloat_t color)
 {
-	return
-	  ((uint32_t)(uint8_t)(color.red   * 255))
-	| ((uint32_t)(uint8_t)(color.green * 255)) << (8 * 1)
-	| ((uint32_t)(uint8_t)(color.blue  * 255)) << (8 * 2)
-	| ((uint32_t)(uint8_t)(color.alpha * 255)) << (8 * 3);
+	return (rodeo_RGBA8_t){
+		.red = (uint8_t)((color.red * (float)UINT8_MAX) + 0.5),
+		.green = (uint8_t)((color.green * (float)UINT8_MAX) + 0.5),
+		.blue = (uint8_t)((color.blue * (float)UINT8_MAX) + 0.5),
+		.alpha = (uint8_t)((color.alpha * (float)UINT8_MAX) + 0.5),
+	};
+}
+
+rodeo_BGRA8_t
+rodeo_RGBA8_to_BGRA8(const rodeo_RGBA8_t color)
+{
+	return (rodeo_BGRA8_t){
+		.alpha = color.alpha,
+		.blue = color.blue,
+		.green = color.green,
+		.red = color.red,
+	};
 }