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initial commit.

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siriusfox 2022-07-02 17:30:47 -07:00
commit c74c452362
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1
.gitignore vendored Normal file
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build/

21
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{
"env": {
"defaultIncludePath": [
"${workspaceFolder}/src",
"${workspaceFolder}/include"
]
},
"configurations": [
{
"name": "Luker",
"includePath": [
"${defaultIncludePath}"
],
"intelliSenseMode": "linux-gcc-x64",
"compilerPath": "/usr/bin/g++",
"cStandard": "gnu17",
"cppStandard": "gnu++14"
}
],
"version": 4
}

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{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"name": "(gdb) build and debug project",
"type": "cppdbg",
"request": "launch",
"program": "${workspaceFolder}/build/main",
"args": [],
"stopAtEntry": false,
"cwd": "${workspaceFolder}/build",
"environment": [],
"externalConsole": false,
"MIMode": "gdb",
"setupCommands": [
{
"description": "Enable pretty-printing for gdb",
"text": "-enable-pretty-printing",
"ignoreFailures": true
},
{
"description": "Set Disassembly Flavor to Intel",
"text": "-gdb-set disassembly-flavor intel",
"ignoreFailures": true
}
],
"preLaunchTask": "C/C++: g++ build workspace project"
}
]
}

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{
"tasks": [
{
"type": "shell",
"label": "C/C++: g++ build workspace project",
"command": "${workspaceFolder}/build.sh",
"options": {
"cwd": "${workspaceFolder}"
},
"group": {
"kind": "build",
"isDefault": true
},
"problemMatcher": "$gcc",
"detail": "compiler: /usr/bin/g++"
}
],
"version": "2.0.0"
}

18
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#!/bin/bash
export IFS=$'\n'
mkdir -p build
if [[ ! -e build/res ]]; then
ln -s ../res build/res
fi
SRC_FILES=($(find src/ -iname "*.c" -or -iname "*.cpp"))
g++ -g -fdiagnostics-color=always \
-Iinclude \
${SRC_FILES[@]} \
mybox.cpp \
-ldl -lglfw -lGL -lX11 -lpthread -lXrandr -lXi -lm \
-o build/main

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#ifndef __khrplatform_h_
#define __khrplatform_h_
/*
** Copyright (c) 2008-2018 The Khronos Group Inc.
**
** Permission is hereby granted, free of charge, to any person obtaining a
** copy of this software and/or associated documentation files (the
** "Materials"), to deal in the Materials without restriction, including
** without limitation the rights to use, copy, modify, merge, publish,
** distribute, sublicense, and/or sell copies of the Materials, and to
** permit persons to whom the Materials are furnished to do so, subject to
** the following conditions:
**
** The above copyright notice and this permission notice shall be included
** in all copies or substantial portions of the Materials.
**
** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
*/
/* Khronos platform-specific types and definitions.
*
* The master copy of khrplatform.h is maintained in the Khronos EGL
* Registry repository at https://github.com/KhronosGroup/EGL-Registry
* The last semantic modification to khrplatform.h was at commit ID:
* 67a3e0864c2d75ea5287b9f3d2eb74a745936692
*
* Adopters may modify this file to suit their platform. Adopters are
* encouraged to submit platform specific modifications to the Khronos
* group so that they can be included in future versions of this file.
* Please submit changes by filing pull requests or issues on
* the EGL Registry repository linked above.
*
*
* See the Implementer's Guidelines for information about where this file
* should be located on your system and for more details of its use:
* http://www.khronos.org/registry/implementers_guide.pdf
*
* This file should be included as
* #include <KHR/khrplatform.h>
* by Khronos client API header files that use its types and defines.
*
* The types in khrplatform.h should only be used to define API-specific types.
*
* Types defined in khrplatform.h:
* khronos_int8_t signed 8 bit
* khronos_uint8_t unsigned 8 bit
* khronos_int16_t signed 16 bit
* khronos_uint16_t unsigned 16 bit
* khronos_int32_t signed 32 bit
* khronos_uint32_t unsigned 32 bit
* khronos_int64_t signed 64 bit
* khronos_uint64_t unsigned 64 bit
* khronos_intptr_t signed same number of bits as a pointer
* khronos_uintptr_t unsigned same number of bits as a pointer
* khronos_ssize_t signed size
* khronos_usize_t unsigned size
* khronos_float_t signed 32 bit floating point
* khronos_time_ns_t unsigned 64 bit time in nanoseconds
* khronos_utime_nanoseconds_t unsigned time interval or absolute time in
* nanoseconds
* khronos_stime_nanoseconds_t signed time interval in nanoseconds
* khronos_boolean_enum_t enumerated boolean type. This should
* only be used as a base type when a client API's boolean type is
* an enum. Client APIs which use an integer or other type for
* booleans cannot use this as the base type for their boolean.
*
* Tokens defined in khrplatform.h:
*
* KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
*
* KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
* KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
*
* Calling convention macros defined in this file:
* KHRONOS_APICALL
* KHRONOS_APIENTRY
* KHRONOS_APIATTRIBUTES
*
* These may be used in function prototypes as:
*
* KHRONOS_APICALL void KHRONOS_APIENTRY funcname(
* int arg1,
* int arg2) KHRONOS_APIATTRIBUTES;
*/
#if defined(__SCITECH_SNAP__) && !defined(KHRONOS_STATIC)
# define KHRONOS_STATIC 1
#endif
/*-------------------------------------------------------------------------
* Definition of KHRONOS_APICALL
*-------------------------------------------------------------------------
* This precedes the return type of the function in the function prototype.
*/
#if defined(KHRONOS_STATIC)
/* If the preprocessor constant KHRONOS_STATIC is defined, make the
* header compatible with static linking. */
# define KHRONOS_APICALL
#elif defined(_WIN32)
# define KHRONOS_APICALL __declspec(dllimport)
#elif defined (__SYMBIAN32__)
# define KHRONOS_APICALL IMPORT_C
#elif defined(__ANDROID__)
# define KHRONOS_APICALL __attribute__((visibility("default")))
#else
# define KHRONOS_APICALL
#endif
/*-------------------------------------------------------------------------
* Definition of KHRONOS_APIENTRY
*-------------------------------------------------------------------------
* This follows the return type of the function and precedes the function
* name in the function prototype.
*/
#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
/* Win32 but not WinCE */
# define KHRONOS_APIENTRY __stdcall
#else
# define KHRONOS_APIENTRY
#endif
/*-------------------------------------------------------------------------
* Definition of KHRONOS_APIATTRIBUTES
*-------------------------------------------------------------------------
* This follows the closing parenthesis of the function prototype arguments.
*/
#if defined (__ARMCC_2__)
#define KHRONOS_APIATTRIBUTES __softfp
#else
#define KHRONOS_APIATTRIBUTES
#endif
/*-------------------------------------------------------------------------
* basic type definitions
*-----------------------------------------------------------------------*/
#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
/*
* Using <stdint.h>
*/
#include <stdint.h>
typedef int32_t khronos_int32_t;
typedef uint32_t khronos_uint32_t;
typedef int64_t khronos_int64_t;
typedef uint64_t khronos_uint64_t;
#define KHRONOS_SUPPORT_INT64 1
#define KHRONOS_SUPPORT_FLOAT 1
/*
* To support platform where unsigned long cannot be used interchangeably with
* inptr_t (e.g. CHERI-extended ISAs), we can use the stdint.h intptr_t.
* Ideally, we could just use (u)intptr_t everywhere, but this could result in
* ABI breakage if khronos_uintptr_t is changed from unsigned long to
* unsigned long long or similar (this results in different C++ name mangling).
* To avoid changes for existing platforms, we restrict usage of intptr_t to
* platforms where the size of a pointer is larger than the size of long.
*/
#if defined(__SIZEOF_LONG__) && defined(__SIZEOF_POINTER__)
#if __SIZEOF_POINTER__ > __SIZEOF_LONG__
#define KHRONOS_USE_INTPTR_T
#endif
#endif
#elif defined(__VMS ) || defined(__sgi)
/*
* Using <inttypes.h>
*/
#include <inttypes.h>
typedef int32_t khronos_int32_t;
typedef uint32_t khronos_uint32_t;
typedef int64_t khronos_int64_t;
typedef uint64_t khronos_uint64_t;
#define KHRONOS_SUPPORT_INT64 1
#define KHRONOS_SUPPORT_FLOAT 1
#elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
/*
* Win32
*/
typedef __int32 khronos_int32_t;
typedef unsigned __int32 khronos_uint32_t;
typedef __int64 khronos_int64_t;
typedef unsigned __int64 khronos_uint64_t;
#define KHRONOS_SUPPORT_INT64 1
#define KHRONOS_SUPPORT_FLOAT 1
#elif defined(__sun__) || defined(__digital__)
/*
* Sun or Digital
*/
typedef int khronos_int32_t;
typedef unsigned int khronos_uint32_t;
#if defined(__arch64__) || defined(_LP64)
typedef long int khronos_int64_t;
typedef unsigned long int khronos_uint64_t;
#else
typedef long long int khronos_int64_t;
typedef unsigned long long int khronos_uint64_t;
#endif /* __arch64__ */
#define KHRONOS_SUPPORT_INT64 1
#define KHRONOS_SUPPORT_FLOAT 1
#elif 0
/*
* Hypothetical platform with no float or int64 support
*/
typedef int khronos_int32_t;
typedef unsigned int khronos_uint32_t;
#define KHRONOS_SUPPORT_INT64 0
#define KHRONOS_SUPPORT_FLOAT 0
#else
/*
* Generic fallback
*/
#include <stdint.h>
typedef int32_t khronos_int32_t;
typedef uint32_t khronos_uint32_t;
typedef int64_t khronos_int64_t;
typedef uint64_t khronos_uint64_t;
#define KHRONOS_SUPPORT_INT64 1
#define KHRONOS_SUPPORT_FLOAT 1
#endif
/*
* Types that are (so far) the same on all platforms
*/
typedef signed char khronos_int8_t;
typedef unsigned char khronos_uint8_t;
typedef signed short int khronos_int16_t;
typedef unsigned short int khronos_uint16_t;
/*
* Types that differ between LLP64 and LP64 architectures - in LLP64,
* pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
* to be the only LLP64 architecture in current use.
*/
#ifdef KHRONOS_USE_INTPTR_T
typedef intptr_t khronos_intptr_t;
typedef uintptr_t khronos_uintptr_t;
#elif defined(_WIN64)
typedef signed long long int khronos_intptr_t;
typedef unsigned long long int khronos_uintptr_t;
#else
typedef signed long int khronos_intptr_t;
typedef unsigned long int khronos_uintptr_t;
#endif
#if defined(_WIN64)
typedef signed long long int khronos_ssize_t;
typedef unsigned long long int khronos_usize_t;
#else
typedef signed long int khronos_ssize_t;
typedef unsigned long int khronos_usize_t;
#endif
#if KHRONOS_SUPPORT_FLOAT
/*
* Float type
*/
typedef float khronos_float_t;
#endif
#if KHRONOS_SUPPORT_INT64
/* Time types
*
* These types can be used to represent a time interval in nanoseconds or
* an absolute Unadjusted System Time. Unadjusted System Time is the number
* of nanoseconds since some arbitrary system event (e.g. since the last
* time the system booted). The Unadjusted System Time is an unsigned
* 64 bit value that wraps back to 0 every 584 years. Time intervals
* may be either signed or unsigned.
*/
typedef khronos_uint64_t khronos_utime_nanoseconds_t;
typedef khronos_int64_t khronos_stime_nanoseconds_t;
#endif
/*
* Dummy value used to pad enum types to 32 bits.
*/
#ifndef KHRONOS_MAX_ENUM
#define KHRONOS_MAX_ENUM 0x7FFFFFFF
#endif
/*
* Enumerated boolean type
*
* Values other than zero should be considered to be true. Therefore
* comparisons should not be made against KHRONOS_TRUE.
*/
typedef enum {
KHRONOS_FALSE = 0,
KHRONOS_TRUE = 1,
KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
} khronos_boolean_enum_t;
#endif /* __khrplatform_h_ */

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{
"folders": [
{
"path": "."
}
],
"settings": {
"files.associations": {
"cctype": "cpp",
"clocale": "cpp",
"cmath": "cpp",
"cstdarg": "cpp",
"cstddef": "cpp",
"cstdio": "cpp",
"cstdlib": "cpp",
"cwchar": "cpp",
"cwctype": "cpp",
"array": "cpp",
"atomic": "cpp",
"*.tcc": "cpp",
"cstdint": "cpp",
"deque": "cpp",
"unordered_map": "cpp",
"vector": "cpp",
"exception": "cpp",
"algorithm": "cpp",
"functional": "cpp",
"iterator": "cpp",
"memory": "cpp",
"memory_resource": "cpp",
"numeric": "cpp",
"optional": "cpp",
"random": "cpp",
"string": "cpp",
"string_view": "cpp",
"system_error": "cpp",
"tuple": "cpp",
"type_traits": "cpp",
"utility": "cpp",
"fstream": "cpp",
"initializer_list": "cpp",
"iosfwd": "cpp",
"iostream": "cpp",
"istream": "cpp",
"limits": "cpp",
"new": "cpp",
"ostream": "cpp",
"sstream": "cpp",
"stdexcept": "cpp",
"streambuf": "cpp",
"cinttypes": "cpp",
"typeinfo": "cpp",
"bit": "cpp",
"string.h": "c",
"lgl_callbacks.h": "c",
"cassert": "cpp"
}
}
}

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#include <glad/glad.h>
#include <GLFW/glfw3.h>
#include <iostream>
#include <cassert>
#include "src/standard_ints.h"
#include "src/lgl_callbacks.h"
#include "src/lgl_shader_tools.h"
int main(void) {
std::cout << "Hello World." << std::endl;
// Setup GLFW context
glfwInit();
// Establish 4.2 GL requirement
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
// Build the winodw
GLFWwindow *window = glfwCreateWindow(960, 400,
"Hello MyBox", NULL, NULL);
if (window == NULL) {
std::cout << "Failed to create GLFW window." << std::endl;
glfwTerminate();
return -1;
}
glfwMakeContextCurrent(window);
// Set the resize callback;
glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
// Setup the glad loader
if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) {
std::cout << "Failed to initalize GLAD." << std::endl;
return -1;
}
i32 success;
char infoLog[512];
// Create the vertex shader
char *shdr_src_vertex = readshader("vertex.glsl");
u32 vertexShader = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(vertexShader, 1, &shdr_src_vertex, NULL);
glCompileShader(vertexShader);
glGetShaderiv(vertexShader, GL_COMPILE_STATUS, &success);
freeshader(shdr_src_vertex);
if (!success) {
glGetShaderInfoLog(vertexShader, 512, NULL, infoLog);
std::cout << "ERROR SHADER::VERTEX::Compilation Failed\n" <<
infoLog << std::endl;
return -1;
}
// Create the fragment shader
char *shdr_src_fragment = readshader("fragment.glsl");
u32 fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(fragmentShader, 1, &shdr_src_fragment, NULL);
glCompileShader(fragmentShader);
glGetShaderiv(fragmentShader, GL_COMPILE_STATUS, &success);
freeshader(shdr_src_fragment);
if (!success) {
glGetShaderInfoLog(fragmentShader, 512, NULL, infoLog);
std::cout << "ERROR SHADER::FRAGMENT::Compilation Failed\n" <<
infoLog << std::endl;
return -1;
}
// Create the shader program
u32 shaderProgram = glCreateProgram();
glAttachShader(shaderProgram, vertexShader);
glAttachShader(shaderProgram, fragmentShader);
glLinkProgram(shaderProgram);
glGetProgramiv(shaderProgram, GL_LINK_STATUS, &success);
if (!success) {
glGetProgramInfoLog(shaderProgram, 512, NULL, infoLog);
std::cout << "ERROR SHADER::PROGRAM::Linking Failed\n" <<
infoLog << std::endl;
return -1;
}
// Free the old shader bits
glDeleteShader(vertexShader);
glDeleteShader(fragmentShader);
// Define the vertex shader dat.
f32 vertices[] = {
0.5f, 0.5f, 0.0f, // tr
0.5f, -0.5f, 0.0f, // br
-0.5f, -0.5f, 0.0f, // bl
-0.5f, 0.5f, 0.0f // tl
};
u32 indicies[] {
0, 1, 3, // t1
1, 2, 3 // t2
};
u32 EBO;
u32 VBO;
u32 VAO;
glGenBuffers(1, &EBO);
glGenBuffers(1, &VBO);
glGenVertexArrays(1, &VAO);
// Bind VAO
glBindVertexArray(VAO);
// copy in data to the VBO
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
// Setup the indexing into the VBO data
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indicies), indicies, GL_STATIC_DRAW);
// Target the Atrib pointer in the VAO to the VBO inside it.
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3*sizeof(f32), (void *)0);
// STart at Zero
glEnableVertexAttribArray(0);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
// ??
while(!glfwWindowShouldClose(window)) {
processInput(window);
// Do some rendering
glClearColor(0.0f, 0.1f, 0.3f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(shaderProgram);
glBindVertexArray(VAO);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
// Finish up
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwTerminate();
return 0;
}

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#version 420 core
out vec4 FragColor;
void main() {
FragColor = vec4(1.0f, 0.5f, 0.2f, 1.0f);
}

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#version 420 core
layout (location = 0) in vec3 aPos;
void main() {
gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0);
}

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#include <GLFW/glfw3.h>
#include "lgl_callbacks.h"
void framebuffer_size_callback(
GLFWwindow* window, GLint width, GLint height) {
/*
GLint nwidth = width - 60;
GLint nheight = height - 60;
if(nwidth <= 60) {
nwidth = width;
}
if(nheight <= 60) {
nheight = height;
}
glViewport(0, 0, nwidth, nheight);
*/
glViewport(0, 0, width, height);
}
void processInput(GLFWwindow *window) {
if(glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS ||
glfwGetKey(window, GLFW_KEY_Q) == GLFW_PRESS) {
glfwSetWindowShouldClose(window, true);
}
}

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#ifndef H__LPR_gl_callbacks
#define H__LPR_gl_callbacks
#include <GLFW/glfw3.h>
void framebuffer_size_callback(
GLFWwindow* window, GLint width, GLint height);
void processInput(GLFWwindow *window);
#endif

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//#include <GLFW/glfw3.h>
#include <stdio.h>
#include <string.h>
#include <cassert>
#include <stdlib.h>
#include <sys/stat.h>
#define CONST_READSHADER_MAX_FN_LEN 256
#define CONST_READSHADER_MAX_FN_SIZE 32*1024
char *readshader(const char *fn) {
char shader_fn[CONST_READSHADER_MAX_FN_LEN];
assert(strlen(fn) + 9 < CONST_READSHADER_MAX_FN_LEN);
struct stat status_buffer;
snprintf(shader_fn, CONST_READSHADER_MAX_FN_LEN, "shaders/%s", fn);
printf("%s\n", shader_fn);
if (stat(shader_fn, &status_buffer) == -1) {
printf("Failed to stat file '%s'\n", shader_fn);
return NULL;
}
assert(status_buffer.st_size < CONST_READSHADER_MAX_FN_SIZE-1);
FILE *fh = fopen(shader_fn, "r");
assert(fh != NULL);
char *shader_data = (char *)malloc(CONST_READSHADER_MAX_FN_SIZE);
assert(shader_data != NULL);
size_t read_bytes = fread((void *)shader_data, sizeof(char),
CONST_READSHADER_MAX_FN_SIZE-1, fh);
assert(read_bytes < CONST_READSHADER_MAX_FN_SIZE-1);
shader_data[read_bytes] = '\0';
fclose(fh);
return shader_data;
}
void freeshader(void *shader_fh) {
assert(shader_fh != NULL);
free(shader_fh);
}

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char *readshader(const char *fn);
void freeshader(void *shader_fh);

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#ifndef RENAUD_STANDARD_INTS
#define RENAUD_STANDARD_INTS
#define u8 uint8_t
#define u16 uint16_t
#define u32 uint32_t
#define u64 uint64_t
#define i8 int8_t
#define i16 int16_t
#define i32 int32_t
#define i64 int64_t
#define f32 float
#define f64 double
#endif