From 6b3fe1bbdb54f2e55fc32afa0bede3bfc1df9ed0 Mon Sep 17 00:00:00 2001
From: Zack Buhman <zack@buhman.org>
Date: Mon, 13 Oct 2025 18:41:42 -0500
Subject: [PATCH] drm: rename main to single_color

---
 drm/.gitignore                 |  4 ++++
 drm/Makefile                   | 24 ++++++++++++++++++++++
 drm/command_processor.h        | 37 ++++++++++++++++++++++++++++++++++
 drm/{main.c => single_color.c} | 37 +---------------------------------
 4 files changed, 66 insertions(+), 36 deletions(-)
 create mode 100644 drm/.gitignore
 create mode 100644 drm/Makefile
 create mode 100644 drm/command_processor.h
 rename drm/{main.c => single_color.c} (91%)

diff --git a/drm/.gitignore b/drm/.gitignore
new file mode 100644
index 0000000..7880914
--- /dev/null
+++ b/drm/.gitignore
@@ -0,0 +1,4 @@
+*
+!*.*
+!*/
+!Makefile
\ No newline at end of file
diff --git a/drm/Makefile b/drm/Makefile
new file mode 100644
index 0000000..61d6182
--- /dev/null
+++ b/drm/Makefile
@@ -0,0 +1,24 @@
+OPT = -O0
+
+CFLAGS += -g
+CFLAGS += -Wall -Werror -Wfatal-errors
+CFLAGS += $(shell pkg-config --cflags libdrm)
+
+LDFLAGS += $(shell pkg-config --libs libdrm)
+
+%: %.c
+	$(CC) $(ARCH) $(CFLAGS) $(LDFLAGS) $(OPT) $< -o $@
+
+clean:
+	find . -type f ! -name "*.*" -delete
+
+.SUFFIXES:
+.INTERMEDIATE:
+.SECONDARY:
+.PHONY: all clean phony
+
+%: RCS/%,v
+%: RCS/%
+%: %,v
+%: s.%
+%: SCCS/s.%
diff --git a/drm/command_processor.h b/drm/command_processor.h
new file mode 100644
index 0000000..9e7362b
--- /dev/null
+++ b/drm/command_processor.h
@@ -0,0 +1,37 @@
+#pragma once
+
+#define TYPE_0_COUNT(c) (((c) & 0x3fff) << 16)
+#define TYPE_0_ONE_REG (1 << 15)
+#define TYPE_0_BASE_INDEX(i) (((i) & 0x1fff) << 0)
+
+#define TYPE_3_COUNT(c) (((c) & 0x3fff) << 16)
+#define TYPE_3_OPCODE(o) (((o) & 0xff) << 8)
+
+#define T0(address, count)                                              \
+  do {                                                                  \
+    ib[ix++].u32 = TYPE_0_COUNT(count) | TYPE_0_BASE_INDEX(address >> 2);   \
+  } while (0);
+
+#define T0_ONE_REG(address, count)                                      \
+  do {                                                                  \
+    ib[ix++].u32 = TYPE_0_COUNT(count) | TYPE_0_ONE_REG | TYPE_0_BASE_INDEX(address >> 2); \
+  } while (0);
+
+#define T0V(address, value)                                             \
+  do {                                                                  \
+    ib[ix++].u32 = TYPE_0_COUNT(0) | TYPE_0_BASE_INDEX(address >> 2);   \
+    ib[ix++].u32 = value;                                               \
+  } while (0);
+
+#define T0Vf(address, value)                                            \
+  do {                                                                  \
+    ib[ix++].u32 = TYPE_0_COUNT(0) | TYPE_0_BASE_INDEX(address >> 2);   \
+    ib[ix++].f32 = value;                                               \
+  } while (0);
+
+#define T3(opcode, count)                                               \
+  do {                                                                  \
+    ib[ix++].u32 = (0b11 << 30) | TYPE_3_COUNT(count) | TYPE_3_OPCODE(opcode); \
+  } while (0);
+
+#define _3D_DRAW_IMMD_2 0x35
diff --git a/drm/main.c b/drm/single_color.c
similarity index 91%
rename from drm/main.c
rename to drm/single_color.c
index c22fe16..0c12350 100644
--- a/drm/main.c
+++ b/drm/single_color.c
@@ -14,6 +14,7 @@
 #include "3d_registers.h"
 #include "3d_registers_undocumented.h"
 #include "3d_registers_bits.h"
+#include "command_processor.h"
 
 union u32_f32 {
   uint32_t u32;
@@ -22,42 +23,6 @@ union u32_f32 {
 
 static union u32_f32 ib[16384];
 
-#define TYPE_0_COUNT(c) (((c) & 0x3fff) << 16)
-#define TYPE_0_ONE_REG (1 << 15)
-#define TYPE_0_BASE_INDEX(i) (((i) & 0x1fff) << 0)
-
-#define TYPE_3_COUNT(c) (((c) & 0x3fff) << 16)
-#define TYPE_3_OPCODE(o) (((o) & 0xff) << 8)
-
-#define T0(address, count)                                              \
-  do {                                                                  \
-    ib[ix++].u32 = TYPE_0_COUNT(count) | TYPE_0_BASE_INDEX(address >> 2);   \
-  } while (0);
-
-#define T0_ONE_REG(address, count)                                      \
-  do {                                                                  \
-    ib[ix++].u32 = TYPE_0_COUNT(count) | TYPE_0_ONE_REG | TYPE_0_BASE_INDEX(address >> 2); \
-  } while (0);
-
-#define T0V(address, value)                                             \
-  do {                                                                  \
-    ib[ix++].u32 = TYPE_0_COUNT(0) | TYPE_0_BASE_INDEX(address >> 2);   \
-    ib[ix++].u32 = value;                                               \
-  } while (0);
-
-#define T0Vf(address, value)                                            \
-  do {                                                                  \
-    ib[ix++].u32 = TYPE_0_COUNT(0) | TYPE_0_BASE_INDEX(address >> 2);   \
-    ib[ix++].f32 = value;                                               \
-  } while (0);
-
-#define T3(opcode, count)                                               \
-  do {                                                                  \
-    ib[ix++].u32 = (0b11 << 30) | TYPE_3_COUNT(count) | TYPE_3_OPCODE(opcode); \
-  } while (0);
-
-#define _3D_DRAW_IMMD_2 0x35
-
 int indirect_buffer()
 {
   int ix = 0;