782 Topics
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| | I found [here](http://zach.in.tu-clausthal.de/teaching/cg_literatur/frame_buffer_objects.html) an article about how to use the Frame Buffer Object in OpenGL,the only problem is my compiler gives an error on compilation `glGenFramebuffersEXT' undeclared (first use this function) " My question is , what are the FBO functions for OpenGL version 1.3 ,if there aren't any how … |
| | hi all. i am a student and i have been lucky enough to try out the havok engin which can use c++. as it is the engin i am using i cant use openGL otherwise ide not have this problem i want to give an object in 3d space a … |
| | Today my pc came, (windows 7 32-bit) so i set it all up, it work i installed everything i needed to, but i downloaded minecraft.exe, so i ran it and loged in, then it took 1 second and it closed, a notepad document came up on my desktop (hs_err_pid3400), so …  |
| | shader.vert: #version 120 varying vec3 position; varying vec3 normal; void main() { position = (vec3(gl_ModelViewMatrix*gl_Vertex)); //get the position of the vertex after translation, rotation, scaling normal = gl_NormalMatrix*gl_Normal; //get the normal direction, after translation, rotation, scaling gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; } shader.frag: #version 120 varying vec3 position; varying vec3 … |
| | Hi Everyone, I need to know how can we represent the projectile motion gven a certain angle and velocity, such that I can watch the animated ball moving in is path on screen.... all using openGL in C++ |
| | I'm trying to visualize a model of lenticular images virtually with opengl pov-ray seen that it is possible by making an array of semi-cylinder lens in front of the square in POV-Ray to "play" Anyone know how to do with opengl? tks |
| | Hi, I am trying to make my own 3d engine and got problem with picking / shooting. Actually I dont even know where to start with that. I have tried find tutos over internet but I did not find any thats useful. Maybe U guys can help me? Anything from …  |
| | Hi, I've been studying OPENGL and 3D programming. I've made kind of 3D engine with basic movement, no collision detection yet. Now theres something really wrong in my code. When I go near rendered QL_QUADS framerate drops to 11-12 and allover my framerate is too low. Any suggestions? Core.java package … |
| | IM A COMPLETE TOOL PLEASE IGNORE / DELETE THIS POST Hello everybody, im currently trying to learn 3d game development (ive developed 2d games in the past, nothing this complex, i am a third year programming student). Ive been working on this project in my spare time for the past … |
| | Hello all, I have been searching for some time to find the most appropriate enviroment to draw lines and simple tri's / quads in three dimensional space. I have recently experiemented with the floatcanvas class in wxpython and I really like it for 2D work, but extending it into the …  |
| | I wrote a program to simulate a simple page flip animation in opengl and now i'm trying to replicate it with two images using texture mapping so that the second image appears on the "back" of the first image during the drag of the lower left corner of the page. … |
| | OpenGL GLUT **My question is at the end of this topic** 1) a) Use your logo you drew within a world coordinate space that has 0,0 at the center. You may choose any width and height for your world coordinate space, glut window and viewport. Be sure that you separate … |
| | I dont know what goes wrong in this code... Help me here I simply want to save the initial and final positions after dragging the mouse... #include"iostream" #include<glut.h> class point1 { public: point1() { x=0; y=0; } int x; int y; }p[2]; int flag=0; void processMouse(int button, int state, int … |
| | When I write in my terminal, java -jar myJar.jar, it gives me an error "Resource Not found res/playNow.png" When I run it in eclipse, it does not give me any errors about this image. My folder in my eclipse is outside my package called res and inside it are images. … |
| | how are you friends imhappy be with you my problem how can i fix **OPENGL.dll** |
| | So I've started learning makefiles today for a project I've been working on. The project uses OpenGL and GDI. I decided to dive right into make files and so far, everything compiles but at the very end, it gives a bunch of undefined references. Thing is, when compiled in codeblocks, … |
| | I'm an enginnering student, our lecturer has ask us to create an opengl app tat shows the bersenham so far i have derive the algo and the pixels...but i don't know how to draw a line between those pixels.. this is what i have so far void init(void) { glClearColor(1.0, …  |
| | I am making a project where i have a rotating and moving 3d cube and on click of any face of cube, that face should be enlarged. All the six faces of cube should have different images. I searched a lot but doesn't get any working. Any help regarding this … |
| | hey guys, i just registered here because i need a forums where i can come back to in case i need help developing my game. this site seems pretty good. well i get right to it now. i plan to make a mmorpg browser text based game with some 2d …  |
| | I have developed an Opengl based desktop game and wish to publish it in net. I want to host the final setup/installer of the game which is around 150mb, so that anyone can download it from the link. Can anyone please recommend services that offer free publishing of such applications? … |
 | HI all. I have a problem regarding how to drawing a crescent using opengl. i recently learn this opengl so i dont have much idea how to do it, here is what i have so far. void drawCrescentTriStrip(float step,float scale,float fullness) { glBegin(GL_TRIANGLE_STRIP); glColor3f(1.0, 1.0, 0.0); // glVertex2f(0.9f,scale); const float … |
| | I just started looking at the basics of openGL, but I keep getting error LNK2019 and I don't know what's causing it or how to fix it. #include "stdafx.h" #include <cstdlib> #include <GLTools.h> #include <GLShaderManager.h> //Include OpenGL header files, so that we can use OpenGL #ifdef __APPLE__ #include <OpenGL/OpenGL.h> #include … |
| | I am trying to write a script to grab images from my CCD camera. I can already do this with C++ usung VFW and OpenGL, but I want to find a way to do it with Perl. It needs to be able to run on windows though. I am pretty … |
| | Why does my checksum not work? I use it on my computer with ATI graphics and it works perfectly fine. When I switch to a computer with Intel graphics, it starts doing random values and they aren't the same. I switch back to my comp, the values are still the … |
| | How can I iterate a buffer with a stride? For example, I saved the pointer to a vertex buffer for later use. I've got the stride, the pointer, and triangle count for vertices. I want to iterate my pointer using this info to get the vertices. I'm doing it wrong … |
| | What are the last 4 values for? (m[0], m[4], m[8], m[12]) (m[1], m[5], m[9], m[13]) (m[2], m[6], m[10], m[14]) (m[3], m[7], m[11], m[15]) I've looked everywhere and cannot figure out what m[3], m[7], m[11], m[16] are for (ModelView Matrix).. It says to ignore them but I can't just ignore them …  |
| | Basically I have created a sprite sheet/tileset with dimentions of 320 x 2048, the tiles are each 32 x 32. I've been able to load individual files with textures in them but I don't seem to be able to load textures from a sprite sheet. Any help ? Here is … |
| | In OpenGL, I'm reading about glVertexPointer which has a parameter: `const void* pointer` and it is a pointer to the coordinates of the first vertex. Thing is, it doesn't have any parameters that tell you the amount of vertices there are. I'm wondering if there is a way to copy … |
| | I hooked a game's OpenGL.dll with my own glwrapper but this game uses two dll's.. It uses a wrapper of OpenGL32 and my hook is also a wrapper. So what I need: I want to know if these symbols point to the same functions.. http://i.imgur.com/eMZC5.png @28, @28, @28.. That means …  |
| | I've hook a game that uses OpenGL and I'm trying to draw text on the window but when drawn, it has a background that I do not want. Currently i'm using: void glPrint(HDC DC, COLORREF Colour, int X, int Y, const char* format, ...) { if (format == NULL) return; … |
| | I'm trying to write a simple particle system I use Python ,OpenGL and numpy libraries (on win7) this is the code I use to draw a single particle def draw(self, mode): glLoadIdentity() ## convert normal point to opengl point trns = self.__trans_to_opengl(self.trans) glTranslatef(trns[0], -trns[1], 0.0) ## this is the vertex … |
| | How can I get camera view and Triangle count of models in OpenGL? I know it's a vague question but I'm just starting opengl and none of the tutorials explain how to get the current camera view. I hooked all OpenGL calls for a game and figured out how to … |
 | Hello, everyone! I'm starting to learn OpenGL and I have a problem with linear transformations. The program is very basic: I want to draw 4 squares and make them move individually (by doing translations and rotation). I understand that I need to stock all the transformation in a matrix, so … |
| | Hello, I am trying to make an OpenGL Hearts game ( like the one from windows 7 or such) but I expected some problems. First I will show you the code that iv done untill now : Card.h: #ifndef Card_H #define Card_H //#include <GL/glut.h> //#include <SOIL.h> #include <stdlib.h> class Card … |
 | My Ubuntu version is 12.04. I'm simply trying to include GL/glu.h in my program, but I get the error: `fatal error: GL/glu.h: No such file or directory` I include it like this: `#include <GL/glu.h>` I have libgl1-mesa-glx-dbg, libgl1-mesa-dev, mesa-common-dev all installed. |
| | I'm using the Guichan lib and I was trying to run the "First application with Guichan, OpenGL and SDL" example, which is located here [Click Here](http://guichan.sourceforge.net/oldsite/getting-started.shtml) . Everything was fine exept when I exit the program and delete all the pointers which were allocated with the "new" and because of …  |
| | hello everyone, i've trying to make a simple object(e.g. a simple robot with arms and legs) in openGL..but i've trouble finding how to write all the vertices within the code..is there any tool we can use to develop the objects separately..and drag the vertice co-ordinates into my program?? thank you |
| | I was following [this tutorial](http://www.swiftless.com/tutorials/opengl4/1-opengl-window.html) for my first attempt at OpenGL. All I'm doing is initializing an empty window. His VS 2010 code is [here](http://www.swiftless.com/?download=1%20-%20OpenGL3%20-%20Window). Using Dev-C++ as my IDE on Windows 7, and MS SDK 7.1, I get this error: [Linker error] undefined reference to `_imp____wglewCreateContextAttribsARB' ld returned 1 …  |
 | I want to use opengl to draw some stuff, not to the screen but to a data buffer instead. Is this possible? IE: uint32_t *data; glSetDrawTarget(data,GL_RGBA|GL_UNSIGNED_INT_8_8_8_8);//this is the line I cannot figuro out how to do glBegin(GL_TRIANGLES); //... glEnd(); //and now my buffer is full of custom data glSetDrawTarget(NULL,NULL);//reset to … |
| | i have been confused lately regarding where to concentrate... java or c++ or Algorithms & data structures or ........(there are still more languages) whenever i concentrate on java i tend to forget c++ or various algorithms or assembly( i have learned 8086/8088 programming). java is very large...core java......file io....swing..servlets....enterprise java...and …  |
| | How do I make the coordinate system in DirectX 11 relative to the top left of the screen? I've setup an orthographic projection matrix, so that I can use screen coordinates but it makes more sense to me to have a top left origin, since I come from working with … |
| | After the program passes the following code lines GL.Begin(BeginMode.Quads); { // passing arguments separately, for performance GL.TexCoord2(0, 0); GL.Vertex2(left, top); GL.TexCoord2(0, maxV); GL.Vertex2(left, bottom); GL.TexCoord2(maxU, maxV); GL.Vertex2(right, bottom); GL.TexCoord2(maxU, 0); GL.Vertex2(right, top); } GL.End(); the alpha values of all the verteces in the program become less than 1(everything becomes transperant). … |
| | Are there any libraries out there that allow me to play .avi files within my OpenGL application? |
| | Guys I have some questions please help me., 1. if I make a tetris game out of c# will it be difficult to do? 2. Is it possible to finish it in less than a week ? 3. Also what should I use as a game studio? OpenGL, XNA or …  |
 | Hi all, I have a simple OpenGL program (learnt from NeHe of course) and I've tried to implement GLSL shaders into my program. Currently, its meant to draw a cube with a shader and quit on escape. However, at the line **`GLenum program = glCreateProgramObjectARB();`** it stops responding and closes. … |
| | So I'm using OpenGL for a game in java, but I'm stuck on an extremely confusing problem. Class: private class TitleBuilding { private double x1, y1, x2, y2; private double percentage, randValue=1; private byte windowType, numBuildings; private Random random2; private byte index; public TitleBuilding(double percentage,byte numBuildings,byte index) { this.percentage=percentage*.01; this.numBuildings=numBuildings; … |
 | Im trying to run a sipmple program in c++ using openGL but get these errors... can somebody please help me? Error 1 error LNK2028: unresolved token (0A00002D) "extern "C" int __stdcall __glutCreateWindowWithExit(char const *,void (__cdecl*)(int))" (?__glutCreateWindowWithExit@@$$J18YGHPBDP6AXH@Z@Z) referenced in function "extern "C" int __stdcall `anonymous namespace'::glutCreateWindow_ATEXIT_HACK(char const *)" (?glutCreateWindow_ATEXIT_HACK@?A0x6d0c8cb1@@$$J14YGHPBD@Z) c:\Users\Surané\documents\visual studio … |
| | I have finally managed to make some progress on PyOpenGL textures. Now I have another problem. Here is my OpenGL init function (its in a script called gl2D.py: [CODE]def init(): glEnable(GL_BLEND) glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE) glEnable(GL_TEXTURE_2D) glShadeModel(GL_SMOOTH) glClearColor(0.0, 0.0, 0.0, 0.0) glDisable(GL_DEPTH_TEST) glEnable(GL_ALPHA_TEST) glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST) glAlphaFunc(GL_NOTEQUAL,0.0)[/CODE] And here is … |
| | This is probably a really simple and stupid question, but when I try to "Build and Run" an OpenGL program on XCode, it seems to debug it and open the window for a split second and then close. There aren't any compilation errors and it finishes saying that the debugging … |
| | Hi i need help with moving a light. at the start of the program i define the floats. `GLfloat Light_Ambient[] = {0.7f, 0.7f, 0.7f, 255.0f};` `GLfloat Light_Diffuse[] = {1.0f, 1.0f, 1.0f, 1.0f};` `GLfloat Light_Position[]= {0.0f, 1.0f, 3.5f, 1.0f};` but later on in the program while the scene is running i … |
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