ratchetfreak

import java.util.*;

/**
 * 
 * spatial partitioning based on sebastian Lague's video:
 * https://www.youtube.com/watch?v=rSKMYc1CQHE
 * 
 * but using cycle sort instead of regular sorting algorithm because I can
 * 
 **/

ratchetfreak

void foo(){
	VMwasm vm;
	initVM(&vm);
	
	char* internalBuffer = nullptr;
	defer{free(internalBuffer);}
	{
		size_t len;
		char* buffer = readWholeFile(..., &len);
		defer{free(buffer);}

ratchetfreak

mitochondrial and y-chromosomal lineage simulator

Simulates a population over several generations, tracking the mitochondrial eve and y-chromosome adam of each individual.

Each generation every female has a chance to produce up to 12 children. Half are male and dropped from the total population. The stop condition for reproduction is experimentally determined to keep the total population stable. No bias is applied to any lineage.

The RNG is a linear shift register based on the highest period shift register listed on wikipedia.

#How to run:

ratchetfreak

• void glEnableVertexAttribArray​(GLuint attribIndex);
• void glDisableVertexAttribArray​(GLuint attribIndex);
• void glVertexAttribPointer(GLuint attribIndex, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const GLvoid * pointer);
• void glVertexAttribFormat(GLuint attribIndex, GLint size, GLenum type, GLboolean normalized, GLuint relativeoffset);
• void glVertexAttribBinding(GLuint attribIndex, GLuint bindingIndex);
• void glBindVertexBuffer(GLuint bindingIndex, GLuint buffer, GLintptr offset, GLintptr stride);

parameter	Details
attribIndex	the location for the vertex attribute to which the vertex array will feed data

ratchetfreak

A dissemination of pipeline stages and how they interract with barriers and other sync operations in Vulkan™.

In my understanding of pipeline stages they are units of execution that run semi-independently. The vkCmd* commands operate on one or more stages. Copy and clear operations for example run on the TRANSFER stage. Each stage can however can work on multiple commands at a time.

When a synchronization operation is issued like vkCmdPipelineBarrier or vkCmdSetEvent and in subpass dependencies you need to specify a srcStageMask. This signifies which pipeline stages to wait on before doing the sync, in case of vkCmdSetEvent setting the event to signaled. This allows the sync to only wait on certain stages.

The dstStageMask on the other hand specifies which stages need to wait on the sync operation (plus any layout transitions and cache flushes) to complete, the other stages will continue executing. In vkSubmitInfo and vkCmdWaitEvent the mask indicates which stages wait on the semaphore

ratchetfreak

@echo off

REM Debug build:
REM cl -Zi ctime.c /link winmm.lib

REM Release build:
cl -O2 ctime.c /link winmm.lib

ratchetfreak

//map buffer with GL_MAP_FLUSH_EXPLICIT_BIT

waitBuffer(gl4, rbWriteIndex); 

perMeshPointer.position(rbAlignment * rbWriteIndex); 
perMeshPointer.asFloatBuffer().put(perMesh[i].toFa()); 
perMeshPointer.rewind();

gl4.glFlushMappedBufferRange(GL_UNIFORM_BUFFER, rbAlignment * rbWriteIndex, rbAlignment);
gl4.glBindBufferRange(GL_UNIFORM_BUFFER, 

ratchetfreak

HMODULE  vulkanLib = LoadLibrary("vulkan-1.dll");

if(vulkanLib == null) //no vulkan installed error out
    exit(1);

PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr) GetProcAddress(vulkanLib, "vkGetInstanceProcAddr");
PFN_vkCreateInstance vkCreateInstance = (FPN_vkCreateInstance) vkGetInstanceProcAddr(null, "vkCreateInstance");

VkInstance instance;