From 974b17fad06cef4b304645b8a9dd92ac91ebb749 Mon Sep 17 00:00:00 2001
From: "John Wilbert M. Villamor" <lameguy64@gmail.com>
Date: Tue, 5 Jan 2021 10:58:04 +0800
Subject: Added updated library reference, added struct names in psxgpu.h,
 defined GTE squareroot functions and added C++ demo example.

---
 examples/beginner/cppdemo/main.cpp | 152 +++++++++++++++++++++++++++++++++++++
 examples/beginner/cppdemo/makefile |  54 +++++++++++++
 2 files changed, 206 insertions(+)
 create mode 100644 examples/beginner/cppdemo/main.cpp
 create mode 100644 examples/beginner/cppdemo/makefile

(limited to 'examples/beginner/cppdemo')

diff --git a/examples/beginner/cppdemo/main.cpp b/examples/beginner/cppdemo/main.cpp
new file mode 100644
index 0000000..1a98cac
--- /dev/null
+++ b/examples/beginner/cppdemo/main.cpp
@@ -0,0 +1,152 @@
+/* Work in progress example, need to add comments. 
+ *
+ * Basically a quick little example that showcases C++ classes are
+ * functioning in PSn00bSDK. - Lameguy64
+ *
+ * Written in December ‎18, ‎2020.
+ */
+ 
+#include <sys/types.h>
+#include <stdio.h>
+#include <malloc.h>
+#include <psxgte.h>
+#include <psxgpu.h>
+
+class GraphClass
+{
+	u_int	*_ot[2];
+	u_char	*_pri[2];
+	u_char	*_nextpri;
+
+	int _ot_count;
+	int _db;
+	
+	DISPENV	_disp[2];
+	DRAWENV _draw[2];
+	
+public:
+
+	GraphClass( int ot_len = 8, int pri_len = 8192 )
+	{
+		_ot[0] = (u_int*)malloc( sizeof(u_int)*ot_len );
+		_ot[1] = (u_int*)malloc( sizeof(u_int)*ot_len );
+		
+		_db = 0;
+		_ot_count = ot_len;
+		ClearOTagR( _ot[0], _ot_count );
+		ClearOTagR( _ot[1], _ot_count );
+		
+		_pri[0] = (u_char*)malloc( pri_len );
+		_pri[1] = (u_char*)malloc( pri_len );
+		
+		_nextpri = _pri[0];
+		
+		printf( "GraphClass::GraphClass: Buffers allocated.\n" );
+		
+	} /* GraphClass */
+	
+	virtual ~GraphClass()
+	{
+		/* free the OTs and primitive buffers */
+		free( _ot[0] );
+		free( _ot[1] );
+		
+		free( _pri[0] );
+		free( _pri[1] );
+		
+		printf( "GraphClass::GraphClass: Buffers freed.\n" );
+		
+	} /* ~GraphClass */
+	
+	void SetRes( int w, int h )
+	{
+		SetDefDispEnv( &_disp[0], 0, h, w, h );
+		SetDefDispEnv( &_disp[1], 0, 0, w, h );
+		
+		SetDefDrawEnv( &_draw[0], 0, 0, w, h );
+		SetDefDrawEnv( &_draw[1], 0, h, w, h );
+		
+		setRGB0( &_draw[0], 63, 0, 127 );
+		_draw[0].isbg = 1;
+		_draw[0].dtd = 1;
+		setRGB0( &_draw[1], 63, 0, 127 );
+		_draw[1].isbg = 1;
+		_draw[1].dtd = 1;
+		
+		PutDispEnv( &_disp[0] );
+		PutDrawEnv( &_draw[0] );
+		
+	} /* SetRes */
+	
+	void IncPri( int bytes )
+	{
+		_nextpri += bytes;
+		
+	} /* IncPri */
+	
+	void SetPri( u_char *ptr )
+	{
+		_nextpri = ptr;
+		
+	} /* SetPri */
+	
+	u_char *GetNextPri( void )
+	{
+		return( _nextpri );
+		
+	} /* GetNextPri */
+	
+	u_int *GetOt( void )
+	{
+		return( _ot[_db] );
+		
+	} /* GetOt */
+	
+	void Display( void )
+	{
+		VSync( 0 );
+		DrawSync( 0 );
+		SetDispMask( 1 );
+		
+		_db = !_db;
+		
+		PutDispEnv( &_disp[_db] );
+		PutDrawEnv( &_draw[_db] );
+		
+		DrawOTag( _ot[!_db]+(_ot_count-1) );
+		
+		ClearOTagR( _ot[_db], _ot_count );
+		_nextpri = _pri[_db];
+		
+	} /* Display */
+	
+}; /* GraphClass */
+
+GraphClass *otable;
+
+int main( int argc, const char *argv[] )
+{
+	TILE *tile;
+	
+	ResetGraph( 0 );
+	
+	otable = new GraphClass();
+	
+	otable->SetRes( 320, 240 );
+	
+	while( 1 )
+	{
+		tile = (TILE*)otable->GetNextPri();
+		setTile( tile );
+		setXY0( tile, 32, 32 );
+		setWH( tile, 128, 128 );
+		setRGB0( tile, 255, 255, 0 );
+		addPrim( otable->GetOt(), tile );
+		otable->IncPri( sizeof(TILE) );
+		
+		otable->Display();
+	}
+	
+	return( 0 );
+	
+} /* main */
\ No newline at end of file
diff --git a/examples/beginner/cppdemo/makefile b/examples/beginner/cppdemo/makefile
new file mode 100644
index 0000000..6a29033
--- /dev/null
+++ b/examples/beginner/cppdemo/makefile
@@ -0,0 +1,54 @@
+include ../../examples-setup.mk
+
+# Project target name
+TARGET		= cppdemo.elf
+
+# Searches for C, C++ and S (assembler) files in local directory
+CFILES		= $(notdir $(wildcard *.c))
+CPPFILES 	= $(notdir $(wildcard *.cpp))
+AFILES		= $(notdir $(wildcard *.s))
+
+# Determine object files
+OFILES		= $(addprefix build/,$(CFILES:.c=.o)) \
+			$(addprefix build/,$(CPPFILES:.cpp=.o)) \
+			$(addprefix build/,$(AFILES:.s=.o))
+
+# Project specific include and library directories
+# (use -I for include dirs, -L for library dirs)
+INCLUDE	 	+=
+LIBDIRS		+=
+
+# Libraries to link
+LIBS		= -lpsxgpu -lpsxgte -lpsxspu -lpsxetc -lpsxapi -lc
+
+# C compiler flags
+CFLAGS		= -g -O2 -fno-builtin -fdata-sections -ffunction-sections
+
+# C++ compiler flags
+CPPFLAGS	= $(CFLAGS) -fno-builtin -fno-rtti -fno-exceptions
+
+# Assembler flags
+AFLAGS		= -g -msoft-float
+
+# Linker flags
+LDFLAGS		= -g -Ttext=0x80010000 -gc-sections \
+			-T $(GCC_BASE)/mipsel-unknown-elf/lib/ldscripts/elf32elmip.x
+
+all: $(OFILES)
+	$(LD) $(LDFLAGS) $(LIBDIRS) $(OFILES) $(LIBS) -o $(TARGET)
+	elf2x -q $(TARGET)
+	
+build/%.o: %.c
+	@mkdir -p $(dir $@)
+	$(CC) $(CFLAGS) $(INCLUDE) -c $< -o $@
+	
+build/%.o: %.cpp
+	@mkdir -p $(dir $@)
+	$(CXX) $(CPPFLAGS) $(INCLUDE) -c $< -o $@
+	
+build/%.o: %.s
+	@mkdir -p $(dir $@)
+	$(CC) $(AFLAGS) $(INCLUDE) -c $< -o $@
+	
+clean:
+	rm -rf build $(TARGET) $(TARGET:.elf=.exe)
-- 
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