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Questions - glfw

glReadPixel return fault result

I want to do the 3D-picking on OpenGl by the way of frame pick. On this way I need to use glReadPixel to get some information of the pixels on the screen currently, so I test it on the following way ...
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ZjuTh

c++

opengl

glfw

glm-math

glreadpixels

Votes: 0

Answers: 1

Latest Answer

OpenGL uses coordinates where the origin (0, 0) is the bottom-left of the window, and +Y is up. You have to convert to OpenGL's coordinate system when reading, since the cursor events use (0, 0) as th...
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Dietrich Epp

Copying data to transient vertex buffer in bgfx causing SIGSEGV

I'm trying to port an bgfx application I wrote in C++ to Rust using bgfx-rs. Everything works great, until I try to copy some vertex data from the application to an transient vertex buffer. let vertic...
test-img

Constantin

rust

glfw

unsafe

bgfx

Votes: 0

Answers: 1

Latest Answer

Assuming I am reading the correct documentation, the issue is you are copying to the stack instead of the data pointer. Since tvb.data is a *mut u8, the call let mut data = *tvb.data; dereferences the...
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Locke

System.NotImplementedException for Glfw.SetMouseButtonCallback

I was working on a project with GLFW.NET and OpenGL.NET when i encountered this error Glfw.SetMouseButtonCallback(glfwWindow, MouseListener.mousePosCallback); here is the MouseListener.mousePosCallbac...
test-img

GameSlayer LLC

c#

.net

opengl

glfw

Votes: 0

Answers: 1

Latest Answer

Glfw.SetMouseButtonCallback(glfwWindow, MouseListener.mousePosCallback); C# tries hard to make code readable by hiding boilerplate like object creation, but that line of code actually means: Glfw.Set...
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Blindy

Xcode boilerplate openGL build produces error: `error finding potential wrapper bundle for node <FSNode 0x100a09910>`

I am working on compiling a simple openGL program in Xcode on my M1 Mac. When I build, It succeeds, but I get a nasty 2022-04-05 09:54:18.959203-0500 opengl[24908:835152] [default] error finding poten...
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Liam White

c++

xcode

macos

opengl

glfw

Votes: 0

Answers: 0

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