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Bartłomiej Filipek fenbf

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fenbf / CalcTexPixels.cpp
Created October 30, 2013 18:15
Function that will go through all texture object levels and count pixel counts and memory in bytes. Currently only Compressed textures formats are supported and RGB8 (RGB) or RGBA8 (RGBA)
void CalculateTextureObjectPixels(GLuint texID, unsigned long *pixelCount, unsigned long *memoryUsed)
{
int baseLevel = 0, maxLevel = 0;
glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, &baseLevel);
glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, &maxLevel);
long pixels = 0, bytes = 0, bpp = 0;
int texW = 0, texH = 0, texFmt = 0, compressed = 0, compressedBytes = 0;
for (int level = baseLevel; level <= maxLevel; ++level)
{
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fenbf / BasicParticles.cpp
Created April 27, 2014 05:47
Basic Particle classes design. Used as a starting point for my particle system. More details http://www.bfilipek.com
#include "particles.h"
#include <assert.h>
#include <algorithm>
namespace particles
{
void ParticleData::generate(size_t maxSize)
{
m_count = maxSize;
m_countAlive = 0;
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fenbf / BasicParticleUpdaters.cpp
Created May 12, 2014 15:44
Basic Particle Update modules
#include "particleUpdaters.h"
#include <assert.h>
#include <algorithm>
#include <glm/common.hpp>
#include <glm/gtc/random.hpp>
namespace particles
{
namespace updaters
{
@fenbf
fenbf / BasicParticleGenerators.cpp
Created May 12, 2014 15:48
Basic Particle Generators modules
#include "particleGenerators.h"
#include <assert.h>
#include <algorithm>
#include <glm/common.hpp>
#include <glm/gtc/random.hpp>
namespace particles
{
namespace generators
{
@fenbf
fenbf / ParticleUpdaters.cpp
Created June 5, 2014 18:37
Particle Updaters
namespace updaters
{
void EulerUpdater::update(double dt, ParticleData *p)
{
const glm::vec4 globalA{ dt * m_globalAcceleration.x, dt * m_globalAcceleration.y, dt * m_globalAcceleration.z, 0.0 };
const float localDT = (float)dt;
const unsigned int endId = p->m_countAlive;
for (size_t i = 0; i < endId; ++i)
p->m_acc[i] += globalA;
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fenbf / glParticleRenderer.cpp
Last active February 4, 2018 00:02
particle rendering 'system'.
#include "glParticleRenderer.h"
#include "particles.h"
#include <assert.h>
#include "gl_includes.h"
namespace particles
{
void GLParticleRenderer::generate(ParticleSystem *sys, bool)
{
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fenbf / dbgheap.cpp
Created July 22, 2015 10:35
// simple perf test for memory allocations
// bfilipek.com
#include <iostream>
#include <memory>
#include <vector>
#include <chrono>
int main()
{
@fenbf
fenbf / sfinae_tostring_ex.cpp
Created February 9, 2016 20:33
C++ SFINAE example: how to detect if a class contains ToString method
// SFINAE, enable_if example
// based on http://stackoverflow.com/questions/257288/is-it-possible-to-write-a-c-template-to-check-for-a-functions-existence
#include <iostream>
#include <type_traits>
class ClassWithToString
{
public:
@fenbf
fenbf / HasToString.cpp
Last active February 24, 2021 04:34
template <typename T>
class HasToString
{
private:
typedef char YesType[1];
typedef char NoType[2];
template <typename C> static YesType& test( decltype(&C::ToString) ) ;
template <typename C> static NoType& test(...);
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fenbf / smart_ptr_deleters.cpp
Last active February 24, 2021 06:23
// smart_ptr_deleters.cpp
// shows how to use custom deleters with unique_ptr and shared_ptr
// Bartlomiej Filipek, April 2016, bfilipek.com
#include <iostream>
#include <memory>
#include <functional>
#include <cassert>
// This class cannot be changed, might come from 3rd party library