Add preliminary demo program

Author: Daniel Cliche

soc/src/examples/3drenderer/Makefile

@@ -11,7 +11,7 @@ CC = ${RISCV_TOOLCHAIN_PATH}${RISCV_TOOLCHAIN_PREFIX}gcc
 RISCV_CC_OPT ?= -march=rv32i -mabi=ilp32
 
 FAT32_SOURCE = ../lib/fat/fat_access.c ../lib/fat/fat_cache.c ../lib/fat/fat_filelib.c ../lib/fat/fat_format.c ../lib/fat/fat_misc.c ../lib/fat/fat_string.c ../lib/fat/fat_table.c ../lib/fat/fat_write.c
-LIB_SOURCE = ../lib/io.c ../lib/syscalls.c ../lib/SDL2/sdl.c ../lib/sd_card.c $(FAT32_SOURCE) ../lib/libfixmath/*.c ../lib/upng/*.c
+LIB_SOURCE = ../lib/io.c ../lib/syscalls.c ../lib/array.c ../lib/SDL2/sdl.c ../lib/sd_card.c $(FAT32_SOURCE) ../lib/libfixmath/*.c ../lib/upng/*.c
 PROGRAM_SOURCE = src/start.S src/*.c
 SERIAL ?= /dev/tty.usbserial-D00039
 

soc/src/examples/3drenderer/assets/runway.png

@@ -7,7 +7,7 @@
 #include <fat_filelib.h>
 #include <libfixmath/fix16.h>
 
-#include "upng.h"
+#include <upng.h>
 #include "array.h"
 #include "clipping.h"
 #include "display.h"

soc/src/examples/3drenderer/src/main.c

@@ -5,7 +5,7 @@
 
 #include "vector.h"
 #include "texture.h"
-#include "upng.h"
+#include <upng.h>
 
 typedef struct {
     int a;

soc/src/examples/3drenderer/src/triangle.h

@@ -0,0 +1,4 @@
+*.bin
+*.elf
+*.hex
+*.lst

soc/src/examples/demo/.gitignore

@@ -0,0 +1,42 @@
+IVERILOG = iverilog
+PYTHON = python3
+
+RISCV_TOOLCHAIN_PATH =
+RISCV_TOOLCHAIN_PREFIX = riscv-none-elf-
+
+AS = ${RISCV_TOOLCHAIN_PATH}${RISCV_TOOLCHAIN_PREFIX}as
+OBJCOPY = ${RISCV_TOOLCHAIN_PATH}${RISCV_TOOLCHAIN_PREFIX}objcopy
+OBJDUMP = ${RISCV_TOOLCHAIN_PATH}${RISCV_TOOLCHAIN_PREFIX}objdump
+CC = ${RISCV_TOOLCHAIN_PATH}${RISCV_TOOLCHAIN_PREFIX}gcc
+RISCV_CC_OPT ?= -march=rv32i -mabi=ilp32
+
+FAT32_SOURCE = ../lib/fat/fat_access.c ../lib/fat/fat_cache.c ../lib/fat/fat_filelib.c ../lib/fat/fat_format.c ../lib/fat/fat_misc.c ../lib/fat/fat_string.c ../lib/fat/fat_table.c ../lib/fat/fat_write.c
+LIB_SOURCE = $(FAT32_SOURCE) ../lib/io.c ../lib/syscalls.c ../lib/sd_card.c ../lib/upng/upng.c ../lib/array.c
+PROGRAM_SOURCE = start.S program.c ../../../../common/graphite.c ../../../../common/cube.c ../../../../common/teapot.c ../../../../common/tex32x32.c ../../../../common/tex64x64.c
+SERIAL ?= /dev/tty.usbserial-D00039
+
+LDFILE ?= program.ld
+
+EXTRA_CC_ARGS = -DRV_FIXED_POINT_EXTENSION=1
+
+all: program.hex
+
+clean:
+	rm -f *.hex *.elf *.bin *.lst
+
+run: program.hex
+	$(PYTHON) ../../../../utils/sendhex.py $(SERIAL) program.hex
+
+program.lst: program.elf
+	${OBJDUMP} --disassemble program.elf > program.lst
+
+program.hex: program.bin
+	${PYTHON} ../../../../utils/makehex.py program.bin > program.hex
+
+program.bin: program.elf program.lst
+	${OBJCOPY} -O binary program.elf program.bin
+
+program.elf: $(PROGRAM_SOURCE) $(LIB_SOURCE)
+	${CC} $(RISCV_CC_OPT) -nostartfiles -O3 -T $(LDFILE) -I ../lib -I ../lib/fat -I ../lib/upng -I ../../../../common $(EXTRA_CC_ARGS) $(PROGRAM_SOURCE) $(LIB_SOURCE) -o program.elf -lm
+
+.PHONY: all clean run