My Triangle (and other files)

Author: hallcristobal

.clang-format

@@ -0,0 +1,5 @@
+BasedOnStyle: Google
+IndentWidth: 4
+ColumnLimit: 0
+NamespaceIndentation: All
+SortIncludes: false

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "external/libtp_c"]
 	path = external/libtp_c
 	url = https://github.com/hallcristobal/libtp_c.git
+[submodule "external/gcn_c"]
+	path = external/gcn_c
+	url = https://github.com/hallcristobal/gcn_c.git

Romhack.toml

@@ -14,6 +14,6 @@ map = "build/GZ2E01.map"
 iso = "build/tpgz.iso"
 
 [link]
-entries = ["game_loop", "read_controller"]
+entries = ["game_loop", "read_controller", "draw"]
 base = "0x8046_0000"
-libs = ["tpgz.a", "external/libtp_c/libtp_c.a"]
+libs = ["tpgz.a", "external/libtp_c/libtp_c.a", "external/gcn_c/gcn_c.a"]

external/gcn_c

@@ -3,6 +3,9 @@
 ; with inject at 0x80460000 gives us 0xA7BE0 bytes
 u32 0x3c608050
 
+0x802e7648:
+b draw
+
 0x80006444:
 bl game_loop
 bl fapGm_Execute()

external/libtp_c

@@ -2,6 +2,7 @@
 #include "libtp_c/include/controller.h"
 #include "libtp_c/include/system.h"
 #include "libtp_c/include/tp.h"
+#include "gcn_c/include/gfx.h"
 
 static bool visible = false;
 
@@ -24,4 +25,26 @@ extern "C" void game_loop() {
     } else if (l_down && r_down && z_down && a_down) {
         visible = true;
     }
+}
+
+extern "C" void draw() {
+    GX_SetBlendMode(GX_BM_BLEND, GX_BL_ONE, GX_BL_ONE, GX_LO_SET);
+
+    GX_ClearVtxDesc();
+    GX_SetVtxDesc(GX_VA_POS, GX_DIRECT);
+    GX_SetVtxDesc(GX_VA_CLR0, GX_DIRECT);
+
+    GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_POS, GX_NRM_XYZ, GX_F32, 0);
+    GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_CLR0, GX_CLR_RGBA, GX_RGBA8, 0);
+
+    GX_Begin(GX_TRIANGLES, GX_VTXFMT0, 3);
+    {
+        GX_Position2f32(150.0f, 150.0f);
+        GX_Color1u32(0xFF0000FF);
+        GX_Position2f32(250.0f, 150.0f);
+        GX_Color1u32(0x00FF00FF);
+        GX_Position2f32(200.0f, 250.0f);
+        GX_Color1u32(0x0000FFFF);
+    }
+    GX_End();
 }