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I'm trying to basic 3D rendering working using OpenGL 1.1: #define GLFW_INCLUDE_GLU #include <GLFW/glfw3.h> #include <gl/GL.h> #include <gl/GLU.h> #include <stdio.h> #include &...
Fomantis's user avatar
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2 votes
1 answer
670 views

I'm trying to render a scene at 320x240 permanently to emulate the feel classic 240p systems, and upscale it to the full size of the screen. The issue I have is that, although I can sort of fudge this ...
Hello234's user avatar
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1 answer
182 views

I'm currently trying to implement a minimap (basically just colored pixels next to each other) with the LWJGL opengl library. So I have the problem when I try to use glBegin(GL_POINTS); for the ...
HopefullyHelpful's user avatar
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1 answer
155 views

I'm making a text renderer that uses FreeType 2 and legacy OpenGL. Problem is, FreeType 2's coordinate system has (0, 0) in the top left corner while OpenGL's coordinate system is Cartesian. This ...
testaccoun0987's user avatar
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217 views

I've been hacking a very old fixed function pipeline OpenGL 1.x game. I've been intercepting opengl calls and injecting all sorts of modern opengl elements, such that I've achieved new lighting and ...
Zain Syed's user avatar
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1 answer
101 views

So I got the OpenGL Redbook 3e and am currently on chapter 2 (newer OpenGL seems too difficult for beginners to graphics programming). I copied a code snippet from the book (I added the initialization ...
testaccoun0987's user avatar
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1 vote
1 answer
268 views

In previous projects, I enabled depth testing used gluPerspective called once on startup to set up a 3D space. Currently, I am rendering a square between -0.5 and 0.5 with 0.0 as its origin after the ...
Blunderchips's user avatar
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2 votes
0 answers
80 views

I would like to remember a current texture state in OpenGL 1.x and later restore it. I can use glIsEnabled to check which texture types are active. Does it make sense to have enabled more than one ...
Irbis's user avatar
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2 answers
483 views

I'm using opengl for educational purposes, but I'm having trouble creating multiple spotlights to represent street lamps. I use an iterator to create several however in the end only the last spotlight ...
lllll's user avatar
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2 answers
2k views

I have a problem with my code in OpenGl I need to do a game engine. I use freeglut library. I did this practise with old Visual Studio versions and I don't have this problem. But with the Visual ...
Ana's user avatar
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16 votes
1 answer
12k views

I'm currently porting an old OpenGL 1.1 application which makes use of wireframe models to OpenGL 3.0. In 1.1 following code is used to create a dashed line: glPushAttrib(GL_ENABLE_BIT); ...
Elmi's user avatar
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3 votes
1 answer
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I'm lost why does my texture renders as expected when I look it from south or east but hides the objects behind them when looking from north or west. I have an invisible block that renders multiple ...
BringerOfTheDawn's user avatar
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1 answer
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I'm writting the lighting effect of my programming in OpenGL 1.1. The light and normals stuffs works. I have only a wrong color I would like to use the ambient color of the used material but not the ...
John Smith's user avatar
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0 answers
241 views

I know OpenGL 1.x is more than only outdated but due to the required target hardware which lacks better OpenGL drivers, I'm bound to this kind of legacy code. Or in other words: people pay for support ...
Elmi's user avatar
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0 votes
1 answer
2k views

First of all: yes, I know this is a really outdated programming interface. But some target machines don't even guarantee OpenGL 2.1, that's why it still has to be used. My problem: when drawing some ...
Elmi's user avatar
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0 votes
1 answer
357 views

How can I to move from keyboard my Sphere in OpenGL if my Sphere is one class? main: #include "glos.h" #include <gl.h> #include <glu.h> #include <glut.h> #include <glaux.h> #...
cavaler12345's user avatar
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1 vote
1 answer
115 views

I am drawing on a texture and then rendering this texture to the screen using GL_QUADS. There is no problem drawing the texture on screen, but while drawing to the texture the only operation that has ...
matt_rule's user avatar
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2 votes
1 answer
216 views

I've injected a DLL into a game process to make a overlay interface, but the problem is that alpha values are being "cropped" (not rendering at all) I've tested several alpha values and it seems to ...
WoLfulus's user avatar
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8 votes
2 answers
19k views

When I call the glRotatef like this: glRotatef(angle,0.0,1.0,0.0) //rotate about y-axis I know it is to rotate by angle degrees about the y axis. But, what is being rotated here? Which object ...
sanjeev mk's user avatar
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-1 votes
1 answer
677 views

To render text with OpenGL I take the textured quad approach, I draw a quad for every character that needs to be represented. I store all the character texture information in a single texture, and use ...
Josh's user avatar
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10 votes
2 answers
25k views

I am struggling to figure out something let's say im rendering some image that has a height of 100 and a width of 100. In scenario A I am taking a glOrtho(0,100,0,100,-100,100) and glViewPort(0,0,50,...
crazyPixel's user avatar
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1 answer
2k views

I want to write a small project with OpenGL C++ and I want to use pixel instead of float value, for example like that: glVertext2f(420, 300); Instead of: glVertex2f(0.4, -0.34); Is it possible?
user3145015's user avatar
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0 votes
1 answer
917 views

Heyho, this problem is really annoying... I'm trying create a window and load & render a texture with the LWJGL. Window-Creation works perfect, texture should be loaded correct (tested and it ...
Zweistein2's user avatar
  • 23
0 votes
3 answers
465 views

I need to create a completely transparent surface passing through the origin of the axes and always parallel to the screen. I'm trying to use this code (in c++) but the result is something like 50% ...
mauro's user avatar
  • 21
1 vote
2 answers
828 views

I am creating a program that allows me to plot points in 3 space, connects them using a Catmull-Rom Spline, and then draws a cylinder around the Spline. I am using GL_TRIANGLES_STRIP to connect ...
Jamie's user avatar
  • 130
-1 votes
1 answer
724 views

I have a file with 3 coordinates and I can render it as points, lines, triangles , or any primitive. I want to construct a wireframe model of this file, what should I change or add to view it as a ...
aqeel's user avatar
  • 7
0 votes
0 answers
677 views

I'm trying to move the camera based on a player (simple square)'s position (x, y). The scale is relatively small and the character is 0.5f by 0.5f. How can I focus the camera on the player's x, and y ...
MysteryDev's user avatar
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0 votes
1 answer
305 views

This problem only occurs in Windows. Runs fine in Linux. I have a stack based state management system. When I switch from one state to the other, the display will flicker between the previous state ...
Stephen__T's user avatar
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0 votes
1 answer
104 views

I'm making a mod where it loops through all entites and draws lines to them. It works fine, but if an entity is out of my viewport the lines will cut off midway across the screen. My code (for the ...
bob smith's user avatar
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0 votes
3 answers
564 views

Say I make a quad like so: float botBaseY = -0.5; glBegin(GL_QUADS); // Box glVertex2f(-.05, botBaseY + -.05); glVertex2f(-.05, botBaseY + .05); glVertex2f(.05, botBaseY + .05); ...
Captainlonate's user avatar
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1 vote
1 answer
4k views

I started learning OpenGL and I'm using it with SFML 2.1 to get window, load images, etc. But I've got a problem with simple prism. Faces are partly transparent and it looks terrible :/ I was looking ...
Jakub Powierza's user avatar
  • 111
0 votes
1 answer
3k views

here is my code: void drawClock(void) { glClearColor(1.0,1.0,1.0,1.0); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glColor3f(0.0,0.0,0.0); for(int i=0; i<12; i++){ glRotatef(30,0,...
user2837244's user avatar
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0 votes
0 answers
227 views

I'm looking at the apple documentation for drawing OpenGL content to the screen, on their 'drawing to a window or view page' (linked below) they show that you can draw by placing data within the ...
Paul Reed's user avatar
  • 113