782 Topics
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 | I have the following code to draw a scene to opengl, but nothing shows up, just a blank screen! void glCameraDraw(const LABglCameraHANDLE h, LABglWindowHANDLE LABglGlobals) { if (!h->isProjected)//check to see if h's projection is loaded { glMatrixMode(GL_PROJECTION); glLoadIdentity(); //LABglGlobals->LABglDimensions are the screen dimensions gluPerspective(h->fov,(float)LABglGlobals->LABglDimensions.right/ (float)LABglGlobals->LABglDimensions.bottom, h->front,h->back); h->isProjected=true; } //set the … |
| | I have no working experience but i do have some knowledge in programming and web development. Note that i cant work at a company or such right now so i think freelancing is the best choise for me. I think it's much better to list what kind of projects and … |
| | Hi,I have encountered a problem while doing the animation for my program. I wanted keep adding a another shape on top of another. But for evry second image the background changes to black. Can you point out what I've done wrong. Thanks. #include <stdlib.h> #include <stdio.h> #include <time.h> #include <GL/glut.h> …  |
| | I have an array of data of the form: union colour { unsigned int argb; struct{ unsigned char a; unsigned char r; unsigned char g; unsigned char b; }bigendian; struct{ unsigned char b; unsigned char g; unsigned char r; unsigned char a; }littleendian; }; struct sprite { int w,h;//stores the … |
| | Hello I am working on small 2D game with OpenGL. My qeustion is it possible to write a polygon class where user can define: shape of polygon in renderer, multiple textures for this polygon ? Thanks for advice |
| | I am using code::blocks and have written a dll. I am currently testing it but am getting tired of having to compile it, copy the DLL, DEF, H and A files into a test project, and then compiling the test project every time I need to fix something. Is there … |
| | I was just wondering why do we exactly call glTranste command if its possible just to increase objects x, y or z. And its even stated in this tutorial: http://nehe.gamedev.net/tutorial/particle_engine_using_triangle_strips/21001/ that its even faster to only use Vertex3f() instead of resetting the Modelview Matrix. Anyways, maybe its just something particular … |
| | basically what ive got going is some transformations using my own functions, ive got them working fine still using glMultMatrix but im not allowed to use that for this. im trying to make my own matrix multiplication function and im getting stuck somewhere. the matricies are all one dimensional arrays … |
| | So i was simply following one of the opengl tutorials - http://nehe.gamedev.net/tutorial/loading_and_moving_through_a_3d_world/22003/ So everything works completely fine except one thing, when i load in textures with SOIL lib its not completely correct, but with GLAUX lib it works just fine but i dont prefer using GLAUX. Here is what i … |
| | Hello again. I´m using MD3 models (Quake 3) in OpenGL/C++. There are performance advantages using vertex shaders in models frame interpolation? Please answer me. Thanks. |
| | It seems that i dont fully comprehend how rotation works. So leys say i have a cube and i do this: x = 90.0f; rotatef(x, 1.0f, 0.0f, 0.0f); Notice that my code here may be not all correct, its like that just to symbolize what i mean. So by doing … |
| | I want to test some graphics work I am doing with the Utah Teapot model. The issue is that all the data I can find on it uses bezier patches (which I have no clue how to render) does anybody know how I could get the data in a form … |
| | Hello all I have a bunch of aggregate elements within my array. This array is for vertex positions in OpenGL. and I need to make a switch without having to bind more data to OpenGL. To do this I must put an if statement within the array or a booleon … |
| | Hi there, I feel really stupid since I'm a beginner at OpenGL with drawing. Is there something that I'm missing in the code? The line doesn't show up on the screen. Thanks! glClearColor(1.0f, 1.0f, 1.0f, 1.0f); glBegin( GL_LINES ); glColor3f( 1.0f, 0.0f, 0.0f ); glVertex3f( 100.0f, 150.0f, 0.0f ); glVertex3f( …  |
| | Hi there, I'm sorry if this is a vague question, but I've just been assigned to create a color animation project with GLSL, and I've never really used it before. The criteria for the assignment is that the animation should depend on object coordinates, vary over time and should use … |
| | I am wondering how to perform a 2D image blit with openGL. I used to use SDL and it was easy, but with opengl I end up making a rectangle with texture coords that is sunk a little into the screen. Is there any way to perform a 'real' blit? … |
| | I have tries run Angry Birds Game on my laptop But it says that opengl not suppoted. I use lenovo ideapad s10 with windows 7 ultimate on it. Plz Tell me the solution how can i get opengl suppot on my laptop....  |
| | Straight to the point, I am using SOIL (http://www.lonesock.net/soil.html) library to upload images into OpenGl. Loading textures works fine but there is this thing i dont fully comprehend. Lets say I load an image into OpenGL via SOIL and I want to reuse the same image over few other textures … |
| | I want to load a 3D model into an opengl scene. For this I've read about the .obj format and how the vertex cord's and etc are stored. I want to parse this file, but have completely no idea what soever how to begin with. After going through couple of …  |
| | I am trying to compile NeHe code for win32 app in visual studio 2010. but this error appear: [CODE]cannot convert parameter 2 from 'const char [29]' to 'LPCWSTR' 1> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast[/CODE] to these instructions [ICODE] if (!wglMakeCurrent(NULL,NULL)) // Are … |
| | So the function: [CODE]glLoadIdentity();[/CODE] resets the matrix, so for instance we do this: [CODE]glMatrixMode(GL_PROJECTION); glLoadIdentity();[/CODE] how exactly does this work, it seems that we set the matrix and then just return it to the way it used to be. |
| | I am working on a game making (or really just general program making, but my question applies to games) DLL for opengl. It is almost done but the collision detection is a little bit slow since it has to calculate bounding boxes for each object repeatedly. I was thinking of … |
| | I recently looked at [URL="http://www.songho.ca/opengl/gl_vbo.html"]this[/URL] description of VBOs and a sample implementation of them. When I ran the executable, it was significantly faster with no VBOs than with them. I don't understand why it should be slower with the VBOs than without. Can anybody explain why? |
| | Hi there! I'm currently working on a school project using a Kinect device. Me and my friend decided that we wanted to create the same 3D effect as [url=http://www.youtube.com/watch?v=Jd3-eiid-Uw]this[/url] guy (Using our Kinect instead of using a Wii). We've made everything work perfectly, and we actually get a really cool … |
| | How do you make shadows in OpenGL. I have been using the NeHe tutorials, but I do not understand their shadow lesson. Can anybody help? |
| | Hello again.:icon_smile: My new PC Toshiba SATELITE C660 with processor intel Pentium inside with nvidia GEFORCE with CUDA and with Windows 7 is much more slower in OpenGL 3.3 programming with freeglut than my old PC Toshiba SATELITE M70 with processor intel Centrino with RADEON X700 with Windows XP in … |
| | Hello, I have been working with opengl and other graphics libraries and they all require the bits per pixel of the screen on initialization of a window. My question is, is there any way to get the system's preffered bits per pixel? or that of the monitor? |
 | I want to add an icon to my C command line project in Xcode. Is there a way to do this? if so please tell me how. Thank you. EDIT: it is an openGL project |
| | It keeps giving me this error and i really need help! [CODE] package net.minecraft.src; import org.lwjgl.opengl.GL11; public class ModelMrsMcDade extends RenderLiving { //The three numbers below change the size of your model (you'll need to change the hitbox size too though) protected void preRenderScale(ModelMrsMcDade entity, float f) { GL11.glScalef(1F, 1F, …  |
| | Hi All, I have a doubt regarding SDL programming. Can some one please help me how can i subdivide a Image lets say into 4 parts and then store them in SDL_Surface array. I intend to animate later using these subdivided images by using SDL_BlitSurface function. I am new to … |
 | Good day, geeky guys. :cool: I have some reactions and questions about DirectX and OpenGL... Suppose (for example only,) I was hired by a big game company to spearhead game developer teams then, I want the game we will produce, to make it versatile in any computer regardless of computer … |
| | Hi, I have a grid, which contains cells that have several different properties. [CODE]struct fluidProperties1 { float foo; float bar; };[/CODE] and I create the grid as follows using a template [CODE]Grid2D<fluidProperties1> grid1;[/CODE] Now, I want to pass the array formed only by the values of foo, and not by … |
| | The speed of this system is incredibly high. On my computer, for example it produces 1100 fps at a 1920x1080 resolution, on the DirectX mode. Currently for Ogre3D engine. Implemented: Phases of the moon The motion of the moon and sun Changing the color of illumination Time system with a … |
| | I was trying to move my camera along the red cube .. so i came across the gluLookAt function, but i am not able to get through this function as to what all it requires ... the content on the Documentation didn't quite help. it will be very helpful if …  |
 | hey... I can't seem to find any tutorials that only use PyOGL... can anyone help out?? also... I found an early thread asking the same Q, where vegaseat mislead someone about OGL back in 2008... :P I just thought I'd point out OGL development is actually thriving, but it's code-base … |
| | I actually have 2 Q's the files I'm working with only provide 4x3 inverse bind matrices for bones. what I first need is a function that writes the 4th row of the matrix and then I need to know PyOpenGL's matrix inversion function (since it's faster than my current function) … |
| | In my program you should be able to look around smoothly with the mouse, my code works, but I'm wondering if there is any better, smoother way of doing this. My code to get the mouse position as if the center of the window was 0,0 (LookAround() is the passive … |
| | Hi, just wanted to share what I've been doing and ask for some friendly/unfriendly advice :) . Some time ago I've started out with C++, learned the basics and stuff. Then I took up SDL, learned the basics and stuff too, made a few bigger/smaller projects and just recently I've …  |
| | Been struggling with this the past hour, so need some help. I'm trying to light my screen with objects that already have set color values glColor3f... I've included the glColorMaterial and its enable within my lighting function however, it lights the scene with the last set color which is red … |
| | can anyone help me in dividing the opengl viewport into two equal parts so that i display my primitives in the left and black out the right side part... |
| | I was wondering if there is any way to have a chameleon effect such as in Oblivion, or "Active Camo" from the Halo series . I'm assuming GLSL will be involved. |
| | I am working on an OpenGL project in C using Xcode 3.2.6. It is a tutorial program and yet I am having problems with it. When I double-click Project.app, it opens for a quarter of a second then closes. The source is: [CODE]#import <Cocoa/Cocoa.h> #include <GLUT/GLUT.h> int main(int argc, char … |
| | I managed to load the bmp file into my project, but it was giving dull and hazy kind of texture for some images .. any idea as to why this is happening ?? |
| | Hi , i have just started OpenGL. So i am sorry if my question is stupid, but i was trying to move a circle inside a square and was unable to do it . .can you please help me out please ?? [CODE] #include <GL/glut.h> #include <math.h> bool* keyStates = … |
| | Hello I already posted this on [URL="http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=306688"]opengl.org[/URL], but nobody seems to have a solution. Basically I set up Opengl and when I want to draw 3D or say I want to use the z-axis by translating in this dimension, it doesn't have any effect. What I can do, is moving …  |
| | I recently have been working on a GLUT project in Code:Blocks. Everything in the code compiles correctly, yet every build seems to return the same result. I narrowed it down to an OpenGL, non-GLUT function : glFrustum. I change the parameters yet the runs are all the same. It could … |
| | I am using GL_TRIANGLE_STRIP to draw my terrain to the screen, however when I compile and run the program I get nothing. When I change GL_TRIANGLE_STRIP to GL_LINES it shows up and works. What can I do to get it working with GL_TRIANGLE_STRIP? here is my draw code: [CODE] void … |
| | I want to start learning OpenGL. Codeblocks decided to break, so I downloaded Dev-C++ instead. I've tried loads of different websites to try and figure out how to install it, and I get some type of error every time. How should I install it with dev-c++? |
| | hello, i'm willing to learn direct3d but i can't find tutorials for it, youtube has few video tuts but they are very unclear. Do you know any free e-books or sites where i can start learning? Another question is directx better than opengl? from my experience opengl needs a lot … |
| | I know that there is a sticky thread and i know that maybe i repeating things that already mentioned but i am totally confused. I am interested to study about game programming,i don't study i bought a book and i am near to finish it about c++. i goggled and … |
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