Questions tagged [OpenGL] (305)

I have a model in which separately stored the coordinates of the vertices and the index buffer with ID textures, the model is not divided into separate parts according to the texture. And the question is how to map a texture on each triangle ? Using texture Atlas will not work, because the texture of different sizes. Code...

PyOpenGL installed via the terminal, libraries are visible, the import of modules takes place without problems, but the following code from OpenGL.GL import * from OpenGL.GLU import * from OpenGL.GLUT import * import sys glutInit() glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB) glutInitWindowSize(300, 300) glutInitWindowPosit...

I do not understand how to play with an alpha channel, translucent frame on the top and bottom code: void Scene1::ShowRam() { glEnable(GL_ALPHA_TEST); glEnable(GL_BLEND); glAlphaFunc(GL_GEQUAL, 0.0); /* glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glBlendFunc(GL_SRC_ALPHA, GL_ONE); glAlphaFunc(GL_GREATER, 0.0 f);...

here's the output of strace and ltrace strace % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 47.21 0.193640 21 9088 ioctl 15.72 0.064488 11 5500 3806 recvmsg 9.47 0.038823 14 2654 poll 8.50 0.034849 18 1891 writev 7.95 0.032610 13 2412 write 6.98 0.02...

I use GLFW and SDL2 (tried two options, I thought a joint in them) to draw the Windows and trying to get libGLESv2 to work with the gl* functions (shaders and other tinsel). All libs porubay in the form of libraries. The code the following Angle: glClearColor(0.0, 1.0, 0.0, 1.0); // green 1 glClear(0x00000100 | 0x00004000)...

You need to draw just such a star: As I understand it, you first need to count the cycles at points on a generating circle (since the peaks at 10, n=10), and then somehow to unite them. float x = R * cos(2 * 3.14*i / n); float y = R * sin(2 * 3.14*i / n); But so far the maximum that I could draw is: Connect the dots has n...

My knowledge in this area is extremely small, and yet the only conflict to which I thought, this collision of balls, but somehow not interested, I want to do on OpenGL some mini games, simulation, etc., but can't figure out how to work with physics ( I was on collision ), and I can't even imagine how to make it, and even so...

I have a hobby, I write the engine for the game in C++ and OpenGL. There are several hundred polygons in the scene. I learned how to determine the collision with the polygons. Could also sort the polygons in groups, to check the collision first with the group, and then with each polygon. But it's not the best option. If BSP...

Welcome! For experiments installed ubuntu server 19.10 (and any other distro) want no of X to use OpenGL directly (in principle) that would be displayed. Tell me, what do I need? glxinfo gives"unable to open display" Prompt, please, where to dig at least... Yet in complete confusion.

The issue arose because of differences between versions, I read that the new OpenGL is too different from the old. I don't know what the distinction is well understood that you can write your own code for some stages of the graphics pipeline. So it is better to the beginner, just look for information on the new OpenGL, or...