initial commit

1 files changed, 64 insertions, 0 deletions

diff --git a/src/PackedCol.h b/src/PackedCol.h
new file mode 100644
index 0000000..498be40
--- /dev/null
+++ b/src/PackedCol.h
@@ -0,0 +1,64 @@
+#ifndef CC_PACKEDCOL_H
+#define CC_PACKEDCOL_H
+#include "Core.h"
+/* Manipulates a packed 32 bit RGBA colour, in a format suitable for the native 3D graphics API.
+   Copyright 2014-2023 ClassiCube | Licensed under BSD-3
+*/
+
+typedef cc_uint32 PackedCol;
+#if (CC_GFX_BACKEND == CC_GFX_BACKEND_D3D9) || defined CC_BUILD_XBOX || defined CC_BUILD_DREAMCAST
+	#define PACKEDCOL_B_SHIFT  0
+	#define PACKEDCOL_G_SHIFT  8
+	#define PACKEDCOL_R_SHIFT 16
+	#define PACKEDCOL_A_SHIFT 24
+#elif defined CC_BIG_ENDIAN
+	#define PACKEDCOL_R_SHIFT 24
+	#define PACKEDCOL_G_SHIFT 16
+	#define PACKEDCOL_B_SHIFT  8
+	#define PACKEDCOL_A_SHIFT  0
+#else
+	#define PACKEDCOL_R_SHIFT  0
+	#define PACKEDCOL_G_SHIFT  8
+	#define PACKEDCOL_B_SHIFT 16
+	#define PACKEDCOL_A_SHIFT 24
+#endif
+
+#define PACKEDCOL_R_MASK (0xFFU << PACKEDCOL_R_SHIFT)
+#define PACKEDCOL_G_MASK (0xFFU << PACKEDCOL_G_SHIFT)
+#define PACKEDCOL_B_MASK (0xFFU << PACKEDCOL_B_SHIFT)
+#define PACKEDCOL_A_MASK (0xFFU << PACKEDCOL_A_SHIFT)
+
+#define PackedCol_R(col) ((cc_uint8)(col >> PACKEDCOL_R_SHIFT))
+#define PackedCol_G(col) ((cc_uint8)(col >> PACKEDCOL_G_SHIFT))
+#define PackedCol_B(col) ((cc_uint8)(col >> PACKEDCOL_B_SHIFT))
+#define PackedCol_A(col) ((cc_uint8)(col >> PACKEDCOL_A_SHIFT))
+
+#define PackedCol_R_Bits(col) ((cc_uint8)(col) << PACKEDCOL_R_SHIFT)
+#define PackedCol_G_Bits(col) ((cc_uint8)(col) << PACKEDCOL_G_SHIFT)
+#define PackedCol_B_Bits(col) ((cc_uint8)(col) << PACKEDCOL_B_SHIFT)
+#define PackedCol_A_Bits(col) ((cc_uint8)(col) << PACKEDCOL_A_SHIFT)
+
+#define PackedCol_Make(r, g, b, a) (PackedCol_R_Bits(r) | PackedCol_G_Bits(g) | PackedCol_B_Bits(b) | PackedCol_A_Bits(a))
+#define PACKEDCOL_WHITE PackedCol_Make(255, 255, 255, 255)
+#define PACKEDCOL_RGB_MASK (PACKEDCOL_R_MASK | PACKEDCOL_G_MASK | PACKEDCOL_B_MASK)
+
+/* Scales RGB components of the given colour. */
+CC_API PackedCol PackedCol_Scale(PackedCol value, float t);
+/* Linearly interpolates RGB components of the two given colours. */
+CC_API PackedCol PackedCol_Lerp(PackedCol a, PackedCol b, float t);
+/* Multiplies RGB components of the two given colours. */
+CC_API PackedCol PackedCol_Tint(PackedCol a, PackedCol b);
+/* Adds the two colors together in a way that gives a brighter result. */
+CC_API PackedCol PackedCol_ScreenBlend(PackedCol a, PackedCol b);
+
+CC_NOINLINE int PackedCol_DeHex(char hex);
+CC_NOINLINE cc_bool PackedCol_Unhex(const char* src, int* dst, int count);
+CC_NOINLINE void PackedCol_ToHex(cc_string* str, PackedCol value);
+CC_NOINLINE cc_bool PackedCol_TryParseHex(const cc_string* str, cc_uint8* rgb);
+
+#define PACKEDCOL_SHADE_X 0.6f
+#define PACKEDCOL_SHADE_Z 0.8f
+#define PACKEDCOL_SHADE_YMIN 0.5f
+/* Retrieves shaded colours for ambient block face lighting */
+void PackedCol_GetShaded(PackedCol normal, PackedCol* xSide, PackedCol* zSide, PackedCol* yMin);
+#endif