From 6fb0c7a7a53e1eba7a0f5dc5b1ade312a0d76119 Mon Sep 17 00:00:00 2001
From: Toad King
Date: Thu, 14 Jun 2012 03:21:06 -0400
Subject: initial pocketsnes commit

---
 src/rops.h.old | 118 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 src/rops.h.old

(limited to 'src/rops.h.old')

diff --git a/src/rops.h.old b/src/rops.h.old
new file mode 100644
index 0000000..899b007
--- /dev/null
+++ b/src/rops.h.old
@@ -0,0 +1,118 @@
+/*
+	Raster Operations macros 
+*/
+
+// -------------
+// RGB_565
+// a.red = a.red - b.red
+// a.blue = a.blue - b.blue
+// a.green = a.green - b.green
+/*
+#define ROP_SUB(a, b) \
+			"	bics	" #b ", " #b ", #0b00000100000100000	\n"\
+			"	orr	" #a ", " #a ", #0b00000100000100000	\n"\
+			"	orr	" #a ", " #a ", #0b10000000000000000	\n"\
+			"	sub	" #a ", " #a ", " #b " 			\n"\
+			"	tst	" #a ", #0b00000000000100000	\n"\
+			"	biceq	" #a ", " #a ", #0b00000000000011111	\n"\
+			"	tst	" #a ", #0b00000100000000000	\n"\
+			"	biceq	" #a ", " #a ", #0b00000011111100000	\n"\
+			"	tst	" #a ", #0b10000000000000000	\n"\
+			"	biceq	" #a ", " #a ", #0b01111100000000000	\n"
+*/
+#define ROP_SUB(a, b) \
+			"	bics	" #b ", " #b ", #0b00000100000100000	\n"\
+			"	beq	999f	\n"\
+			"	orr	" #a ", " #a ", #0b00000100000100000	\n"\
+			"	orr	" #a ", " #a ", #(1 << 31)	\n"\
+			"	subs	" #a ", " #a ", " #b " 			\n"\
+			"	bicpl	" #a ", " #a ", #0b01111100000000000	\n"\
+			"	tst	" #a ", #0b00000000000100000	\n"\
+			"	biceq	" #a ", " #a ", #0b00000000000011111	\n"\
+			"	tst	" #a ", #0b00000100000000000	\n"\
+			"	biceq	" #a ", " #a ", #0b00000011111100000	\n"\
+			"999:\n"
+
+
+// -------------
+// RGB_565
+// if ZF set do ROP_SUB, else:
+// a.red = (a.red - b.red) / 2
+// a.blue = (a.blue - b.blue) / 2
+// a.green = (a.green - b.green) / 2
+/*
+#define ROP_SUB1_2(a, b) \
+			"	movne	" #a ", " #a ", lsr #1			\n"\
+			"	bicne	" #a ", " #a ", #0b00000010000010000	\n"\
+			"	movne	" #b ", " #b ", lsr #1			\n"\
+			"	bicne	" #b ", " #b ", #0b00000010000010000	\n"\
+										\
+			"	bic	" #b ", " #b ", #0b00000100000100000	\n"\
+			"	orr	" #a ", " #a ", #0b00000100000100000	\n"\
+			"	orr	" #a ", " #a ", #0b10000000000000000	\n"\
+			"	sub	" #a ", " #a ", " #b " 			\n"\
+			"	tst	" #a ", #0b00000000000100000	\n"\
+			"	biceq	" #a ", " #a ", #0b00000000000011111	\n"\
+			"	tst	" #a ", #0b00000100000000000	\n"\
+			"	biceq	" #a ", " #a ", #0b00000011111100000	\n"\
+			"	tst	" #a ", #0b10000000000000000	\n"\
+			"	biceq	" #a ", " #a ", #0b01111100000000000	\n"
+*/
+
+#define ROP_SUB1_2(a, b) \
+			"	movne	" #a ", " #a ", lsr #1			\n"\
+			"	bicne	" #a ", " #a ", #0b00000010000010000	\n"\
+			"	movne	" #b ", " #b ", lsr #1			\n"\
+			"	bicne	" #b ", " #b ", #0b00000010000010000	\n"\
+										\
+			"	bics	" #b ", " #b ", #0b00000100000100000	\n"\
+			"	beq	999f \n"\
+			"	orr	" #a ", " #a ", #0b00000100000100000	\n"\
+			"	orr	" #a ", " #a ", #(1 << 31)	\n"\
+			"	subs	" #a ", " #a ", " #b " 			\n"\
+			"	bicpl	" #a ", " #a ", #0b01111100000000000	\n"\
+			"	tst	" #a ", #0b00000000000100000	\n"\
+			"	biceq	" #a ", " #a ", #0b00000000000011111	\n"\
+			"	tst	" #a ", #0b00000100000000000	\n"\
+			"	biceq	" #a ", " #a ", #0b00000011111100000	\n"\
+			"999:\n"
+
+
+// -------------
+// RGB_565
+// a.red = a.red + b.red
+// a.blue = a.blue + b.blue
+// a.green = a.green + b.green
+#define ROP_ADD(a, b) \
+			"	bics	" #b ", " #b ", #0b00000100000100000	\n"\
+			"	beq	999f \n"\
+			"	bic	" #a ", " #a ", #0b00000100000100000	\n"\
+			"	add	" #a ", " #a ", " #b " 			\n"\
+			"	tst	" #a ", #0b00000000000100000	\n"\
+			"	orrne	" #a ", " #a ", #0b00000000000011111	\n"\
+			"	tst	" #a ", #0b00000100000000000	\n"\
+			"	orrne	" #a ", " #a ", #0b00000011111100000	\n"\
+			"	tst	" #a ", #0b10000000000000000	\n"\
+			"	orrne	" #a ", " #a ", #0b01111100000000000	\n"\
+			"999:\n"
+
+// -------------
+// RGB_565
+// if ZF set do ROP_ADD, else:
+// a.red = (a.red + b.red) / 2
+// a.blue = (a.blue + b.blue) / 2
+// a.green = (a.green + b.green) / 2
+#define ROP_ADD1_2(a, b) \
+			"	bic	" #a ", " #a ", #0b00000100000100000	\n"\
+			"	bicne	" #a ", " #a ", #0b00001000001000000	\n"\
+			"	bic	" #b ", " #b ", #0b00000100000100000	\n"\
+			"	bicne	" #b ", " #b ", #0b00001000001000000	\n"\
+			"	add	" #a ", " #a ", " #b "			\n"\
+			"	movne	" #a ", " #a ", lsr #1			\n"\
+			"	tst	" #a ", #0b00000000000100000	\n"\
+			"	orrne	" #a ", " #a ", #0b00000000000011111	\n"\
+			"	tst	" #a ", #0b00000100000000000	\n"\
+			"	orrne	" #a ", " #a ", #0b00000011111100000	\n"\
+			"	tst	" #a ", #0b10000000000000000	\n"\
+			"	orrne	" #a ", " #a ", #0b01111100000000000	\n"
+
-- 
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