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Add opengl/gpu_console example

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This commit is contained in:
fincs 2018-10-06 17:06:22 +02:00
parent 4894fcf472
commit 696b163d0a
3 changed files with 722 additions and 0 deletions
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193
graphics/opengl/gpu_console/Makefile Normal file
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#---------------------------------------------------------------------------------
.SUFFIXES:
#---------------------------------------------------------------------------------
ifeq ($(strip $(DEVKITPRO)),)
$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro")
endif
TOPDIR ?= $(CURDIR)
include $(DEVKITPRO)/libnx/switch_rules
#---------------------------------------------------------------------------------
# TARGET is the name of the output
# BUILD is the directory where object files & intermediate files will be placed
# SOURCES is a list of directories containing source code
# DATA is a list of directories containing data files
# INCLUDES is a list of directories containing header files
# EXEFS_SRC is the optional input directory containing data copied into exefs, if anything this normally should only contain "main.npdm".
# ROMFS is the directory containing data to be added to RomFS, relative to the Makefile (Optional)
#
# NO_ICON: if set to anything, do not use icon.
# NO_NACP: if set to anything, no .nacp file is generated.
# APP_TITLE is the name of the app stored in the .nacp file (Optional)
# APP_AUTHOR is the author of the app stored in the .nacp file (Optional)
# APP_VERSION is the version of the app stored in the .nacp file (Optional)
# APP_TITLEID is the titleID of the app stored in the .nacp file (Optional)
# ICON is the filename of the icon (.jpg), relative to the project folder.
# If not set, it attempts to use one of the following (in this order):
# - <Project name>.jpg
# - icon.jpg
# - <libnx folder>/default_icon.jpg
#---------------------------------------------------------------------------------
TARGET := $(notdir $(CURDIR))
BUILD := build
SOURCES := source
DATA := data
INCLUDES := include
EXEFS_SRC := exefs_src
#ROMFS := romfs
#---------------------------------------------------------------------------------
# options for code generation
#---------------------------------------------------------------------------------
ARCH := -march=armv8-a -mtune=cortex-a57 -mtp=soft -fPIE
CFLAGS := -g -Wall -O2 -ffunction-sections \
$(ARCH) $(DEFINES)
CFLAGS += $(INCLUDE) -D__SWITCH__
CXXFLAGS := $(CFLAGS) -fno-rtti -fno-exceptions
ASFLAGS := -g $(ARCH)
LDFLAGS = -specs=$(DEVKITPRO)/libnx/switch.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)
LIBS := -lglad -lEGL -lglapi -ldrm_nouveau -lnx
#---------------------------------------------------------------------------------
# list of directories containing libraries, this must be the top level containing
# include and lib
#---------------------------------------------------------------------------------
LIBDIRS := $(PORTLIBS) $(LIBNX)
#---------------------------------------------------------------------------------
# no real need to edit anything past this point unless you need to add additional
# rules for different file extensions
#---------------------------------------------------------------------------------
ifneq ($(BUILD),$(notdir $(CURDIR)))
#---------------------------------------------------------------------------------
export OUTPUT := $(CURDIR)/$(TARGET)
export TOPDIR := $(CURDIR)
export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
$(foreach dir,$(DATA),$(CURDIR)/$(dir))
export DEPSDIR := $(CURDIR)/$(BUILD)
CFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
CPPFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
SFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
BINFILES := $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))
#---------------------------------------------------------------------------------
# use CXX for linking C++ projects, CC for standard C
#---------------------------------------------------------------------------------
ifeq ($(strip $(CPPFILES)),)
#---------------------------------------------------------------------------------
export LD := $(CC)
#---------------------------------------------------------------------------------
else
#---------------------------------------------------------------------------------
export LD := $(CXX)
#---------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------
export OFILES_BIN := $(addsuffix .o,$(BINFILES))
export OFILES_SRC := $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
export OFILES := $(OFILES_BIN) $(OFILES_SRC)
export HFILES_BIN := $(addsuffix .h,$(subst .,_,$(BINFILES)))
export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
-I$(CURDIR)/$(BUILD)
export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib)
export BUILD_EXEFS_SRC := $(TOPDIR)/$(EXEFS_SRC)
ifeq ($(strip $(ICON)),)
icons := $(wildcard *.jpg)
ifneq (,$(findstring $(TARGET).jpg,$(icons)))
export APP_ICON := $(TOPDIR)/$(TARGET).jpg
else
ifneq (,$(findstring icon.jpg,$(icons)))
export APP_ICON := $(TOPDIR)/icon.jpg
endif
endif
else
export APP_ICON := $(TOPDIR)/$(ICON)
endif
ifeq ($(strip $(NO_ICON)),)
export NROFLAGS += --icon=$(APP_ICON)
endif
ifeq ($(strip $(NO_NACP)),)
export NROFLAGS += --nacp=$(CURDIR)/$(TARGET).nacp
endif
ifneq ($(APP_TITLEID),)
export NACPFLAGS += --titleid=$(APP_TITLEID)
endif
ifneq ($(ROMFS),)
export NROFLAGS += --romfsdir=$(CURDIR)/$(ROMFS)
endif
.PHONY: $(BUILD) clean all
#---------------------------------------------------------------------------------
all: $(BUILD)
$(BUILD):
@[ -d $@ ] || mkdir -p $@
@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
#---------------------------------------------------------------------------------
clean:
@echo clean ...
@rm -fr $(BUILD) $(TARGET).pfs0 $(TARGET).nso $(TARGET).nro $(TARGET).nacp $(TARGET).elf
#---------------------------------------------------------------------------------
else
.PHONY: all
DEPENDS := $(OFILES:.o=.d)
#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
all : $(OUTPUT).pfs0 $(OUTPUT).nro
$(OUTPUT).pfs0 : $(OUTPUT).nso
$(OUTPUT).nso : $(OUTPUT).elf
ifeq ($(strip $(NO_NACP)),)
$(OUTPUT).nro : $(OUTPUT).elf $(OUTPUT).nacp
else
$(OUTPUT).nro : $(OUTPUT).elf
endif
$(OUTPUT).elf : $(OFILES)
$(OFILES_SRC) : $(HFILES_BIN)
#---------------------------------------------------------------------------------
# you need a rule like this for each extension you use as binary data
#---------------------------------------------------------------------------------
%.bin.o %_bin.h : %.bin
#---------------------------------------------------------------------------------
@echo $(notdir $<)
@$(bin2o)
-include $(DEPENDS)
#---------------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------------

465
graphics/opengl/gpu_console/source/gpu_console.cpp Normal file
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// Sample GPU/OpenGL powered console renderer implementation.
// Please note that this implementation is incomplete, and only normal/bold colors are implemented.
// Reverse colors, faint colors, underline or strikethrough are not implemented.
// Nevertheless, it should suffice for most purposes.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <switch.h>
#include <EGL/egl.h> // EGL library
#include <EGL/eglext.h> // EGL extensions
#include <glad/glad.h> // glad library (OpenGL loader)
#define TRACE(...) ((void)0)
static const char* const vertexShaderSource = R"text(
#version 330 core
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
out gl_PerVertex
{
vec4 gl_Position;
};
layout (location = 0) in int inAttr;
layout (location = 0) out vec4 outColor;
layout (location = 1) out vec3 outUV;
uniform ivec2 dimensions;
uniform vec4 palettes[16] = vec4[](
vec4(0.0, 0.0, 0.0, 1.0),
vec4(0.5, 0.0, 0.0, 1.0),
vec4(0.0, 0.5, 0.0, 1.0),
vec4(0.5, 0.5, 0.0, 1.0),
vec4(0.0, 0.0, 0.5, 1.0),
vec4(0.5, 0.0, 0.5, 1.0),
vec4(0.0, 0.5, 0.5, 1.0),
vec4(0.75, 0.75, 0.75, 1.0),
vec4(0.5, 0.5, 0.5, 1.0),
vec4(1.0, 0.0, 0.0, 1.0),
vec4(0.0, 1.0, 0.0, 1.0),
vec4(1.0, 1.0, 0.0, 1.0),
vec4(0.0, 0.0, 1.0, 1.0),
vec4(1.0, 0.0, 1.0, 1.0),
vec4(0.0, 1.0, 1.0, 1.0),
vec4(1.0, 1.0, 1.0, 1.0)
);
const vec2 builtin_vertices[] = vec2[](
vec2(0.0, 0.0),
vec2(0.0, -1.0),
vec2(1.0, -1.0),
vec2(0.0, 0.0),
vec2(1.0, -1.0),
vec2(1.0, 0.0)
);
void main()
{
// Extract data from the attribute
float tileId = float(inAttr & 0x3FF);
bool hFlip = ((inAttr >> 10) & 1) != 0;
bool vFlip = ((inAttr >> 11) & 1) != 0;
int palId = (inAttr >> 12) & 0xF;
vec2 vtxData = builtin_vertices[gl_VertexID];
// Position
float tileRow = floor(float(gl_InstanceID) / dimensions.x);
float tileCol = float(gl_InstanceID) - tileRow*dimensions.x;
vec2 basePos;
basePos.x = 2.0 * tileCol / dimensions.x - 1.0;
basePos.y = 2.0 * (1.0 - tileRow / dimensions.y) - 1.0;
vec2 offsetPos = vec2(2.0) / vec2(dimensions.xy);
gl_Position.xy = basePos + offsetPos * vtxData;
gl_Position.zw = vec2(0.0, 1.0);
// Color
outColor = palettes[palId];
// UVs
if (hFlip)
vtxData.x = 1.0 - vtxData.x;
if (vFlip)
vtxData.y = -1.0 - vtxData.y;
outUV.xy = vec2(0.0,1.0) + vtxData;
outUV.z = tileId;
}
)text";
static const char* const fragmentShaderSource = R"text(
#version 330 core
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
layout (location = 0) in vec4 inColor;
layout (location = 1) in vec3 inUV;
layout (location = 0) out vec4 outColor;
uniform sampler2DArray tileset;
void main()
{
float alpha = inColor.a * texture(tileset, inUV).r;
if (alpha < 0.1) discard;
outColor.rgb = inColor.rgb;
outColor.a = alpha;
}
)text";
namespace
{
struct GpuConsole : public ConsoleRenderer
{
constexpr GpuConsole() :
ConsoleRenderer{ _init, _deinit, _drawChar, _scrollWindow, _flushAndSwap },
s_display{}, s_context{}, s_surface{},
s_tilemapVsh{}, s_tilemapFsh{}, s_tilemapPipeline{},
s_tilemapVao{}, s_tilemapVbo{}, s_tilemap{},
s_tilesetTex{}
{ }
bool init(PrintConsole* con);
void deinit(PrintConsole* con);
void drawChar(PrintConsole* con, int x, int y, int c);
void scrollWindow(PrintConsole* con);
void flushAndSwap(PrintConsole* con);
private:
static GpuConsole* _get(PrintConsole* con)
{
return static_cast<GpuConsole*>(con->renderer);
}
static bool _init(PrintConsole* con)
{
return _get(con)->init(con);
}
static void _deinit(PrintConsole* con)
{
_get(con)->deinit(con);
}
static void _drawChar(PrintConsole* con, int x, int y, int c)
{
_get(con)->drawChar(con, x, y, c);
}
static void _scrollWindow(PrintConsole* con)
{
_get(con)->scrollWindow(con);
}
static void _flushAndSwap(PrintConsole* con)
{
_get(con)->flushAndSwap(con);
}
EGLDisplay s_display;
EGLContext s_context;
EGLSurface s_surface;
bool initEgl();
void deinitEgl();
GLuint s_tilemapVsh, s_tilemapFsh;
GLuint s_tilemapPipeline;
GLuint s_tilemapVao, s_tilemapVbo;
uint16_t* s_tilemap;
GLuint s_tilesetTex;
};
constexpr uint16_t MakeTilemapEntry(unsigned tileId, bool hFlip, bool vFlip, unsigned palId)
{
uint16_t ent = 0;
ent |= (tileId & 0x3FF);
if (hFlip)
ent |= 1u << 10;
if (vFlip)
ent |= 1u << 11;
ent |= (palId & 0xF) << 12;
return ent;
}
GLuint loadShaderProgram(GLenum type, const char* source)
{
GLint success;
GLchar msg[512];
GLuint handle = glCreateShaderProgramv(type, 1, &source);
glGetProgramiv(handle, GL_LINK_STATUS, &success);
if (success == GL_FALSE)
{
glGetProgramInfoLog(handle, sizeof(msg), nullptr, msg);
TRACE("Shader error: %s", msg);
glDeleteProgram(handle);
handle = 0;
}
return handle;
}
}
bool GpuConsole::init(PrintConsole* con)
{
// Initialize EGL and load GL routines
if (!initEgl())
return false;
gladLoadGL();
// Load our shaders
s_tilemapVsh = loadShaderProgram(GL_VERTEX_SHADER, vertexShaderSource);
s_tilemapFsh = loadShaderProgram(GL_FRAGMENT_SHADER, fragmentShaderSource);
// Configure tilemap dimensions
glProgramUniform2i(s_tilemapVsh, glGetUniformLocation(s_tilemapVsh, "dimensions"),
con->consoleWidth, con->consoleHeight
);
// Create a program pipeline and attach the programs to their respective stages
glGenProgramPipelines(1, &s_tilemapPipeline);
glUseProgramStages(s_tilemapPipeline, GL_VERTEX_SHADER_BIT, s_tilemapVsh);
glUseProgramStages(s_tilemapPipeline, GL_FRAGMENT_SHADER_BIT, s_tilemapFsh);
// Create a VAO and a VBO for the tilemap
glGenVertexArrays(1, &s_tilemapVao);
glBindVertexArray(s_tilemapVao);
// Allocate the tilemap data
glGenBuffers(1, &s_tilemapVbo);
glBindBuffer(GL_ARRAY_BUFFER, s_tilemapVbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(uint16_t)*con->consoleWidth*con->consoleHeight, nullptr, GL_DYNAMIC_DRAW);
// Configure the only vertex attribute (which is per-instance)
glVertexAttribIPointer(0, 1, GL_UNSIGNED_SHORT, sizeof(uint16_t), (void*)0);
glVertexAttribDivisor(0, 1);
glEnableVertexAttribArray(0);
// We're done with the VBO/VAO, unbind them
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
// Allocate the tilemap and clear it
s_tilemap = new uint16_t[con->consoleWidth*con->consoleHeight];
memset(s_tilemap, 0, sizeof(uint16_t)*con->consoleWidth*con->consoleHeight);
// Unpack 1bpp tileset into a texture image OpenGL can load
uint8_t* tileset = new uint8_t[con->font.numChars*con->font.tileWidth*con->font.tileHeight];
unsigned bytesPerRow = (con->font.tileWidth+7)/8;
for (unsigned i = 0; i < con->font.numChars; i ++)
{
const uint8_t* tile = (const uint8_t*)con->font.gfx + con->font.tileHeight*bytesPerRow*i;
uint8_t* data = &tileset[con->font.tileWidth*con->font.tileHeight*i];
for (unsigned j = 0; j < con->font.tileHeight; j ++)
{
//const uint8_t* row = &tile[bytesPerRow*(con->font.tileHeight-1-j)];
const uint8_t* row = &tile[bytesPerRow*(con->font.tileHeight-j)];
uint8_t c = 0;
for (unsigned k = 0; k < con->font.tileWidth; k ++)
{
if (!(k & 7))
c = *--row;
*data++ = (c & 0x80) ? 0xFF : 0x00;
c <<= 1;
}
}
}
// Create tileset texture from the unpacked tileset image
glGenTextures(1, &s_tilesetTex);
glActiveTexture(GL_TEXTURE0); // activate the texture unit first before binding texture
glBindTexture(GL_TEXTURE_2D_ARRAY, s_tilesetTex);
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MIN_FILTER, GL_NEAREST); // can also use GL_LINEAR here
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexImage3D(GL_TEXTURE_2D_ARRAY, 0, GL_R8, con->font.tileWidth, con->font.tileHeight, con->font.numChars, 0, GL_RED, GL_UNSIGNED_BYTE, tileset);
delete[] tileset;
// Bind the texture unit to the fragment shader
glProgramUniform1i(s_tilemapFsh, glGetUniformLocation(s_tilemapFsh, "tileset"), 0); // texunit 0
// Other miscellaneous init
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
//glEnable(GL_BLEND);
//glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// Configure viewport
glViewport(0, 0, 1280, 720);
return true;
}
void GpuConsole::deinit(PrintConsole* con)
{
glDeleteTextures(1, &s_tilesetTex);
glDeleteBuffers(1, &s_tilemapVbo);
glDeleteVertexArrays(1, &s_tilemapVao);
glDeleteProgramPipelines(1, &s_tilemapPipeline);
glDeleteProgram(s_tilemapFsh);
glDeleteProgram(s_tilemapVsh);
delete[] s_tilemap;
deinitEgl();
}
void GpuConsole::drawChar(PrintConsole* con, int x, int y, int c)
{
int writingColor = con->fg;
int screenColor = con->bg;
if (con->flags & CONSOLE_COLOR_BOLD) {
writingColor += 8;
} else if (con->flags & CONSOLE_COLOR_FAINT) {
// Not supported yet
//writingColor += 16;
}
if (con->flags & CONSOLE_COLOR_REVERSE) {
int tmp = writingColor;
writingColor = screenColor;
screenColor = tmp;
}
s_tilemap[y*con->consoleWidth+x] = MakeTilemapEntry(c, false, false, writingColor);
}
void GpuConsole::scrollWindow(PrintConsole* con)
{
for (int y = 0; y < con->windowHeight-1; y ++)
memcpy(
&s_tilemap[(con->windowY+y+0)*con->consoleWidth + con->windowX],
&s_tilemap[(con->windowY+y+1)*con->consoleWidth + con->windowX],
sizeof(uint16_t)*con->windowWidth);
}
void GpuConsole::flushAndSwap(PrintConsole* con)
{
// Clear the framebuffer
glClearColor(0x10/255.0f, 0x10/255.0f, 0x10/255.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
// Update tilemap
glBindBuffer(GL_ARRAY_BUFFER, s_tilemapVbo);
glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(uint16_t)*con->consoleWidth*con->consoleHeight, s_tilemap);
glBindBuffer(GL_ARRAY_BUFFER, 0);
// Draw the tilemap
glBindProgramPipeline(s_tilemapPipeline);
glBindVertexArray(s_tilemapVao);
glDrawArraysInstanced(GL_TRIANGLES, 0, 6, con->consoleWidth*con->consoleHeight);
glBindVertexArray(0);
// Swap buffers
eglSwapBuffers(s_display, s_surface);
}
bool GpuConsole::initEgl()
{
// Connect to the EGL default display
s_display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
if (!s_display)
{
TRACE("Could not connect to display! error: %d", eglGetError());
goto _fail0;
}
// Initialize the EGL display connection
eglInitialize(s_display, nullptr, nullptr);
// Select OpenGL (Core) as the desired graphics API
if (eglBindAPI(EGL_OPENGL_API) == EGL_FALSE)
{
TRACE("Could not set API! error: %d", eglGetError());
goto _fail1;
}
// Get an appropriate EGL framebuffer configuration
EGLConfig config;
EGLint numConfigs;
static const EGLint framebufferAttributeList[] =
{
EGL_RED_SIZE, 1,
EGL_GREEN_SIZE, 1,
EGL_BLUE_SIZE, 1,
EGL_NONE
};
eglChooseConfig(s_display, framebufferAttributeList, &config, 1, &numConfigs);
if (numConfigs == 0)
{
TRACE("No config found! error: %d", eglGetError());
goto _fail1;
}
// Create an EGL window surface
s_surface = eglCreateWindowSurface(s_display, config, (char*)"", nullptr);
if (!s_surface)
{
TRACE("Surface creation failed! error: %d", eglGetError());
goto _fail1;
}
// Create an EGL rendering context
static const EGLint contextAttributeList[] =
{
EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR, EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR,
EGL_CONTEXT_MAJOR_VERSION_KHR, 4,
EGL_CONTEXT_MINOR_VERSION_KHR, 3,
EGL_NONE
};
s_context = eglCreateContext(s_display, config, EGL_NO_CONTEXT, contextAttributeList);
if (!s_context)
{
TRACE("Context creation failed! error: %d", eglGetError());
goto _fail2;
}
// Connect the context to the surface
eglMakeCurrent(s_display, s_surface, s_surface, s_context);
return true;
_fail2:
eglDestroySurface(s_display, s_surface);
s_surface = nullptr;
_fail1:
eglTerminate(s_display);
s_display = nullptr;
_fail0:
return false;
}
void GpuConsole::deinitEgl()
{
if (s_display)
{
eglMakeCurrent(s_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
if (s_context)
{
eglDestroyContext(s_display, s_context);
s_context = nullptr;
}
if (s_surface)
{
eglDestroySurface(s_display, s_surface);
s_surface = nullptr;
}
eglTerminate(s_display);
s_display = nullptr;
}
}
extern "C" ConsoleRenderer* getDefaultConsoleRenderer(void)
{
static GpuConsole s_gpuConsole;
return &s_gpuConsole;
}

64
graphics/opengl/gpu_console/source/main.c Normal file
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#include <string.h>
#include <stdio.h>
#include <switch.h>
int main(int argc, char **argv)
{
consoleInit(NULL);
// clear screen and home cursor
printf( CONSOLE_ESC(2J) );
// Set print co-ordinates
// /x1b[row;columnH
printf(CONSOLE_ESC(10;10H) "VT52 codes demo");
// move cursor up
// /x1b[linesA
printf(CONSOLE_ESC(10A)"Line 0");
// move cursor left
// /x1b[columnsD
printf(CONSOLE_ESC(28D)"Column 0");
// move cursor down
// /x1b[linesB
printf(CONSOLE_ESC(19B)"Line 19");
// move cursor right
// /x1b[columnsC
printf(CONSOLE_ESC(5C)"Column 20");
printf("\n");
// Color codes and attributes
for(int i=0; i<8; i++)
{
printf( CONSOLE_ESC(%1$d;1m) /* Set color */
"Default "
CONSOLE_ESC(2m) "Light "
"\n"
CONSOLE_ESC(0m) /* revert attributes*/
, i + 30);
}
// Main loop
while(appletMainLoop())
{
//Scan all the inputs. This should be done once for each frame
hidScanInput();
// Your code goes here
//hidKeysDown returns information about which buttons have been just pressed (and they weren't in the previous frame)
u64 kDown = hidKeysDown(CONTROLLER_P1_AUTO);
if (kDown & KEY_PLUS) break; // break in order to return to hbmenu
consoleUpdate(NULL);
}
consoleExit(NULL);
return 0;
}