definition prep (still exploring..)

code/graphics_hello_psyq/hello_gpu.c

@@ -1,11 +1,12 @@
 // #include <stdlib.h>
 #include "duffle/dsl.h"
+#include "duffle/math.h"
 #include "duffle/gp.h"
+#include "hello_gpu.h"
+
+DoubleBuffer screen_buffer;
+S16          active_screen_buffer;
 
-#define ScreenRes_X 320
-#define ScreenRes_Y 240
-#define ScreenRes_CenterX (ScreenRes_X >> 1)
-#define ScreenRes_CenterY (ScreenRes_Y >> 1)
 
 int main(void)
 {

code/graphics_hello_psyq/hello_gpu.h

@@ -0,0 +1,40 @@
+#ifdef INTELLISENSE_DIRECTIVES
+#	pragma once
+#	include "duffle/dsl.h"
+#	include "duffle/math.h"
+#	include "duffle/gp.h"
+#endif
+
+typedef def_struct(DrawEnv_Packed) { U32 tag; U32 code[15]; };
+typedef def_struct(DrawEnv) {
+	Rect_S16 clip_area;
+	A2_S16   drawwing_offset;
+	Rect_S16 texture_page;
+	BYTE     flag_dither;
+	BYTE     flag_draw_on_display;
+	BYTE     enable_auto_clear;
+	RGB8     initial_bg_color;
+	DrawEnv_Packed dr_env; // reserved
+};
+typedef def_struct(DisplayEnv) {
+	Rect_S16 display_area;
+	Rect_S16 screen;
+	BYTE     vinterlace;
+	BYTE     color24;
+	BYTE     pad0;
+	BYTE     pad1;
+};
+typedef def_farray(DrawEnv,    2);
+typedef def_farray(DisplayEnv, 2);
+typedef def_struct(DoubleBuffer) {
+	A2_DrawEnv    draw;
+	A2_DisplayEnv display;
+};
+
+#define ScreenRes_X 320
+#define ScreenRes_Y 240
+#define ScreenRes_CenterX (ScreenRes_X >> 1)
+#define ScreenRes_CenterY (ScreenRes_Y >> 1)
+
+extern DoubleBuffer screen_buffer;
+extern S16          active_screen_buffer;

code/graphics_hello_psyq/hello_gpu.s

@@ -1,9 +1,67 @@
 // .include "./toolchain/pcsx-redux/src/mips/common/crt0/crt0.s"
 
 .include "./asmdd/dsl.s"
+.include "./asmdd/math.s"
 .include "./asmdd/io.s"
 .include "./asmdd/gp.s"
 
+# DrawEnv_Packed { U32 tag; U32 code[15]; }
+.equ DrawEnv_Packed_tag,    0
+.equ DrawEnv_Packed_code,   4
+.equ sizeof_DrawEnv_Packed, 64
+# DrawEnv {
+#     Rect_S16 clip_area;
+#     A2_S16   drawwing_offset;
+#     Rect_S16 texture_page;
+#     BYTE     flag_dither;
+#     BYTE     flag_draw_on_display;
+#     BYTE     enable_auto_clear;
+#     RGB8     initial_bg_color;
+#     // 2 bytes padding
+#     DrawEnv_Packed dr_env;
+# };
+.equ DrawEnv_clip_area,            0
+.equ DrawEnv_drawwing_offset,      8
+.equ DrawEnv_texture_page,         12
+.equ DrawEnv_flag_dither,          20
+.equ DrawEnv_flag_draw_on_display, 21
+.equ DrawEnv_enable_auto_clear,    22
+.equ DrawEnv_initial_bg_color,     23
+.equ DrawEnv_dr_env,               28
+.equ sizeof_DrawEnv,               92
+# DisplayEnv {
+#     Rect_S16 display_area;
+#     Rect_S16 screen;
+#     BYTE     vinterlace;
+#     BYTE     color24;
+#     BYTE     pad0;
+#     BYTE     pad1;
+# };
+.equ DisplayEnv_display_area, 0
+.equ DisplayEnv_screen,       8
+.equ DisplayEnv_vinterlace,   16
+.equ DisplayEnv_color24,      17
+.equ DisplayEnv_pad0,         18
+.equ DisplayEnv_pad1,         19
+.equ sizeof_DisplayEnv,       20
+# DoubleBuffer {
+#     DrawEnv    draw[2];
+#     DisplayEnv display[2];
+# };
+.equ DoubleBuffer_draw,      0
+.equ DoubleBuffer_draw_0,    0
+.equ DoubleBuffer_draw_1,    92  # 0 + sizeof_DrawEnv
+.equ DoubleBuffer_display,   184 # 92 * 2
+.equ DoubleBuffer_display_0, 184
+.equ DoubleBuffer_display_1, 204 # 184 + sizeof_DisplayEnv
+.equ sizeof_DoubleBuffer,    224
+# Screen Constants
+.equ ScreenRes_X,       320
+.equ ScreenRes_Y,       240
+.equ ScreenRes_CenterX, (ScreenRes_X >> 2)
+.equ ScreenRes_CenterY, (ScreenRes_Y >> 2)
+
+
 .global gp_screen_init
 .type gp_screen_init, @function
 gp_screen_init: