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authorMarcus Huderle <huderlem@gmail.com>2017-09-30 19:23:55 -0700
committerGitHub <noreply@github.com>2017-09-30 19:23:55 -0700
commit83efcc9c3d1e81b78c2cd9ceab3ac6420a5f4070 (patch)
tree19bbb03916702b468956e82ed2bbe6d259b77a85 /src/engine/blend_palette.c
parent5fb9b9052276243d54ecfc27d0514e9c35825e8c (diff)
parent70c45eb2616195eb47b8bc67d03a1589cd6c56e6 (diff)
Merge pull request #411 from ProjectRevoTPP/refactor_src
split out src/ directory into categorized subdirectories.
Diffstat (limited to 'src/engine/blend_palette.c')
-rw-r--r--src/engine/blend_palette.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/src/engine/blend_palette.c b/src/engine/blend_palette.c
new file mode 100644
index 000000000..843c50ac1
--- /dev/null
+++ b/src/engine/blend_palette.c
@@ -0,0 +1,20 @@
+#include "global.h"
+#include "blend_palette.h"
+#include "palette.h"
+
+void BlendPalette(u16 palOffset, u16 numEntries, u8 coeff, u16 blendColor)
+{
+ u16 i;
+ for (i = 0; i < numEntries; i++)
+ {
+ u16 index = i + palOffset;
+ struct PlttData *data1 = (struct PlttData *)&gPlttBufferUnfaded[index];
+ s8 r = data1->r;
+ s8 g = data1->g;
+ s8 b = data1->b;
+ struct PlttData *data2 = (struct PlttData *)&blendColor;
+ gPlttBufferFaded[index] = ((r + (((data2->r - r) * coeff) >> 4)) << 0)
+ | ((g + (((data2->g - g) * coeff) >> 4)) << 5)
+ | ((b + (((data2->b - b) * coeff) >> 4)) << 10);
+ }
+}