rxantos

Change Log

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

[Unreleased] - yyyy-mm-dd

Here we write upgrading notes for brands. It's a team effort to make them as

rxantos

#define STB_IMAGE_STATIC
#define STB_IMAGE_IMPLEMENTATION
#include "stb_image.h" // get from https://raw.githubusercontent.com/nothings/stb/master/stb_image.h

#include <windows.h>

int main(int argc, char* argv[])
{
   int w, h;
   stbi_uc* data = stbi_load(argv[1], &w, &h, NULL, 4);

rxantos

// Sample code showing how to create a modern OpenGL window and rendering context on Win32.

#include <windows.h>
#include <gl/gl.h>
#include <stdbool.h>

typedef HGLRC WINAPI wglCreateContextAttribsARB_type(HDC hdc, HGLRC hShareContext,
        const int *attribList);
wglCreateContextAttribsARB_type *wglCreateContextAttribsARB;

rxantos

// example how to set up OpenGL core context on Windows
// and use basic functionality of OpenGL 4.5 version

// important extension functionality used here:
// (4.3) KHR_debug:                     https://www.khronos.org/registry/OpenGL/extensions/KHR/KHR_debug.txt
// (4.5) ARB_direct_state_access:       https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_direct_state_access.txt
// (4.1) ARB_separate_shader_objects:   https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_separate_shader_objects.txt
// (4.2) ARB_shading_language_420pack:  https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_shading_language_420pack.txt
// (4.3) ARB_explicit_uniform_location: https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_explicit_uniform_location.txt

rxantos

#define WIN32_LEAN_AND_MEAN
#include <winsock2.h>
#include <windows.h>
#define SECURITY_WIN32
#include <security.h>
#include <schannel.h>
#include <shlwapi.h>
#include <assert.h>
#include <stdio.h>

rxantos

// clang.exe -Os -fno-unwind-tables -nostdlib -fuse-ld=lld -Wl,-fixed,-merge:.rdata=.text,-subsystem:console FlushFileCache.c -o FlushFileCache.exe

#define WIN32_LEAN_AND_MEAN
#include <windows.h>

#pragma comment (lib, "kernel32.lib")
#pragma comment (lib, "advapi32.lib")

#define error(str) do { DWORD written; WriteFile(GetStdHandle(STD_ERROR_HANDLE), str, sizeof(str)-1, &written, NULL); } while (0)

rxantos

// example how to set up OpenGL core context on Windows for rendering to multiple windows

#define WINDOW_COUNT 4 // how many windows we'll be opening?

// important extension functionality used here:
// (4.3) KHR_debug:                     https://www.khronos.org/registry/OpenGL/extensions/KHR/KHR_debug.txt
// (4.5) ARB_direct_state_access:       https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_direct_state_access.txt
// (4.1) ARB_separate_shader_objects:   https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_separate_shader_objects.txt
// (4.2) ARB_shading_language_420pack:  https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_shading_language_420pack.txt
// (4.3) ARB_explicit_uniform_location: https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_explicit_uniform_location.txt

rxantos

// http://marina.sys.wakayama-u.ac.jp/~tokoi/?date=20110221

inline void billboard()
{
	GLfloat m[16];
	glGetFloatv(GL_MODELVIEW_MATRIX, m);
	
	float inv_len;
	
	m[8] = -m[12];

rxantos

/*
    CREATING THE VAO & VBO
    ======================
    Objects must be generated via its corresponding glGen...() function
    To perform any operations on any of OpenGL's objects, we must bind
    the objects by invoking it corresponding glBind...() function
        
    For @param GLenum target:
        GL_ARRAY_BUFFER for Vertex attributes (Non-indexing method)
        GL_ELEMENT_ARRAY_BUFFER for Vertex array indices (Indexing method)