From 8b5fb7a5a1f4b768342df2203d9f980e4000a893 Mon Sep 17 00:00:00 2001
From: Ed_ <edwardgz@gmail.com>
Date: Sun, 31 May 2026 23:26:43 -0400
Subject: [PATCH] prepping to setup gte.h with similar setup to gp.h, maybe
 with more lessons from color forth learnings..

---
 code/duffle/gte.h          | 56 ++++++++++++++++++++++++++++++++++++++
 code/gte_hello/hello_gte.c | 22 ++++++++++++++-
 scripts/build_psyq.ps1     |  2 +-
 scripts/output.json        |  2 +-
 4 files changed, 79 insertions(+), 3 deletions(-)
 create mode 100644 code/duffle/gte.h

diff --git a/code/duffle/gte.h b/code/duffle/gte.h
new file mode 100644
index 0000000..e06d3bb
--- /dev/null
+++ b/code/duffle/gte.h
@@ -0,0 +1,56 @@
+#ifdef INTELLISENSE_DIRECTIVES
+#	pragma once
+#	include "dsl.h"
+#	include "math.h"
+#endif
+
+/* C2 data registers */
+
+#define C2_VXY0  0
+#define C2_VZ0   1
+#define C2_VXY1  2
+#define C2_VZ1   3
+#define C2_VXY2  4
+#define C2_VZ2   5
+#define C2_RGB   6
+#define C2_OTZ   7
+#define C2_IR0   8
+#define C2_IR1   9
+#define C2_IR2  10
+#define C2_IR3  11
+#define C2_SXY0 12
+#define C2_SXY1 13
+#define C2_SXY2 14
+#define C2_SXYP 15
+#define C2_SZ0  16
+#define C2_SZ1  17
+#define C2_SZ2  18
+#define C2_SZ3  19
+#define C2_MAC0 24
+#define C2_MAC1 25
+#define C2_MAC2 26
+#define C2_FLAG 31
+
+/* C2 control registers */
+
+#define C2_RT11RT12  0
+#define C2_RT13RT21  1
+#define C2_RT22RT23  2
+#define C2_RT31RT32  3
+#define C2_RT33_TRX  4
+#define C2_TRY_TRZ   5
+#define C2_OFX_OFY   18   /* (low = OFX, high = OFY) */
+#define C2_H_SF      20
+
+/* Command codes (low 6 bits) */
+
+#define CMD_RTPS  0x01
+#define CMD_RTPT  0x02
+#define CMD_NCLIP 0x06
+#define CMD_OP    0x0C
+#define CMD_DPCS  0x10
+#define CMD_INTPL 0x11
+#define CMD_MVMVA 0x09
+#define CMD_AVSZ3 0x2D
+#define CMD_AVSZ4 0x2E
+
diff --git a/code/gte_hello/hello_gte.c b/code/gte_hello/hello_gte.c
index 2a854f8..dd6fee7 100644
--- a/code/gte_hello/hello_gte.c
+++ b/code/gte_hello/hello_gte.c
@@ -157,6 +157,26 @@ void gp_display_frame(DoubleBuffer* screen_buf, S2* active_buf_id, U4* ordering_
 void render(void) {
 }
 
+// #define gte_ldv0(r0)          \
+//     __asm__ volatile(         \
+//         "lwc2   $0, 0( %0 );" \
+//         "lwc2   $1, 4( %0 )"  \
+//         :                     \
+//         : "r"(r0))
+
+/**
+ * @brief Loads a single V3_S2 to GTE vector register V0
+ *
+ * @details Loads values from an V3_S2 struct to GTE data registers C2_VXY0
+ * and C2_VZ0.
+ */
+// #define gte_ldv0( r0 ) __asm__ volatile ( \
+// 	"lwc2	$0, 0( %0 );"	\
+// 	"lwc2	$1, 4( %0 );"	\
+// 	:						\
+// 	: "r"( r0 )				\
+// 	: "$t0" )
+
 void update(PrimitiveArena* pa, U4* ordering_buf) 
 {
 	orderingtbl_clear_reverse(ordering_buf, OrderingTbl_Len);
@@ -219,7 +239,7 @@ void update(PrimitiveArena* pa, U4* ordering_buf)
 		// static_mem.cube.rot.x +=  6;
 		// static_mem.cube.rot.y +=  8;
 		// static_mem.cube.rot.z += 12;
-		static_mem.cube.rot.y += 20;
+		static_mem.cube.rot.y += 0;
 	}
 	// Draw Floor
 	{
diff --git a/scripts/build_psyq.ps1 b/scripts/build_psyq.ps1
index 996ff05..01f0f76 100644
--- a/scripts/build_psyq.ps1
+++ b/scripts/build_psyq.ps1
@@ -349,4 +349,4 @@ function build-gte_hello {
 	link-modules @($module_asm_crt, $module_asm, $module_c) $elf $link_args
 	make-binary $elf $exe
 }
-build-gte_hello
\ No newline at end of file
+build-gte_hello
diff --git a/scripts/output.json b/scripts/output.json
index f8286b0..e92720a 100644
--- a/scripts/output.json
+++ b/scripts/output.json
@@ -2,6 +2,6 @@
   "configureme": true,
   "grey": false,
   "mask": 0.5,
-  "masktype": 2,
+  "masktype": 1,
   "warp": 0
 }