![]() This would be too small to see if printed pixel to pixel on most printers and would typically be scaled up. A typical QR code could fit in a 21 x 21 grid. Most barcode generation algorithms will give you a compact barcode usually with the smallest element size being one pixel. Barcode readers generally work faster and more accurately when the edges are crisp and then size of the lines or dots are precise. They are usually made of black dots or lines on a white background. I've come across this problem many times over the years and still live in hope that there is an easy way to do this that I have missed. Std::cout << "lightCount value = " << *(int*)ptr << "\n" Void* ptr = glMapBuffer(GL_SHADER_STORAGE_BUFFER, GL_READ_ONLY) GlBufferSubData(GL_SHADER_STORAGE_BUFFER, sizeof(int), sizeof(LightData) * lights.size(), &lights) GlBufferSubData(GL_SHADER_STORAGE_BUFFER, 0, sizeof(int), &lightCount) GlBufferData(GL_SHADER_STORAGE_BUFFER, sizeof(int) + sizeof(LightData) * 10, NULL, GL_DYNAMIC_DRAW) GlBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, lightSSBO) Target machine: Raspberry Pi 3B (1GB RAM, Broadcom something-or-other) 4 cores 1.4GHz + Ubuntu Server for Pi I apologise, but I would seriously appreciate any pointers.Įxtra notes: I'm writing for/on Linux embedded devices over the DRI/M interface.Īs per Richard's comment, some information about my systemĭevelopment machine: Dell inspiron 15 7570, 16GB RAM, i7 8core + Ubuntu 21.04 I'm presently not using a multimedia framework like SFML, because I'm trying to focus on executable and codebase size, but if that's the best idea, so be it.I'm new-ish to programming on the low level, and especially to performance-oriented programming, so there's always the chance I've missed something.Using a library/os function to do this for me While I was planning on doing this anyway, I thought I'd mention it here to ask for further information on how to best achieve this. ![]() Huge overhead for moving and managing data between GPU and CPUĪlgorithmic optimisations such as calculating multi-image bounding boxes and adding **** loads more code to only render the regions of the image that will be visible.Overhead from spawning and managing separate threads. ![]()
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