When its translated in an integral value (1,2,3, etc….), there are no black lines in-between the tiles, it looks fine. But when it’s translated to a non-integral (1.1, 1.5, 1.67), there are small blackish lines between each tile (I’m imagining that it’s due to subpixel rendering, right?) … and it doesn’t look pretty =P So… … Read more
Is there a formula that generates a set of coordinates of triangles whose vertices are located on a sphere? I am probably looking for something that does something similar to gluSphere. Yet, I need to color the different triangles in specfic colors so that it seems I can’t use gluSphere. Also: I do understand that … Read more
When doing multitexturing in GLSL, is there anyway to have an indexable array of samplers where each texture is a different size? This syntax isn’t valid: uniform sampler2D texArray[5]; Right now it seems like the only option is to individually create the samplers: uniform sampler2D tex1; uniform sampler2D tex2; uniform sampler2D tex3; uniform sampler2D tex4; … Read more
I am trying to convert quat in glm to mat4. My code is : #include <iostream> #include<glm/glm.hpp> #include<glm/gtc/quaternion.hpp> #include<glm/common.hpp> using namespace std; int main() { glm::mat4 MyMatrix=glm::mat4(); glm::quat myQuat; myQuat=glm::quat(0.707107,0.707107,0.00,0.000); glm::mat4 RotationMatrix = quaternion::toMat4(myQuat); for(int i=0;i<4;++i) { for(int j=0;j<4;++j) { cout<<RotationMatrix[i][j]<<” “; } cout<<“\n”; } return 0; } When i run the program it shows … Read more
I’m having a problem where the following lines of code always print “Failed to initialize glad” and then exits the program: if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) { std::cout << “Failed to initialize GLAD” << std::endl; return -1; } I have been using https://learnopengl.com/ as a guide and have been following the steps in the getting started section. I … Read more
I have an OpenGL shader written in glsl. I have a globally defined array at the top of the header like this: const int permutations[256] = int[256]( 64 , 34 , 36 , 137 , 120 , 122 , 246 , 46 , 79 , 10 , 37 , 181, … ); When I start … Read more
This issue is now fixed. My shader attributes were not bound correctly. I have got a game, which when ran from the IDE looks like this: However, when I export it from Eclipse with these settings, The texturing is completely incorrect. The textures are still loaded, but they are not wrapping correctly onto the object. … Read more
I’ve been working with OpenGL for about a year now, and have learned a lot of stuff. Unfortunatly the way I learned it was the old pre 3.x way, meaning immediate mode, default shaders, matrix stacks, etc. I more or less have an idea of what has changed from then to now by looking at … Read more
When on MacOSX, “man glRotate” brings up the glRotate manpage. On ubuntu, with manpages-dev and manpages-posix-dev insatlled, “man glRotate” doesn’t bring up the glRotate manpage (though I can build and compile gl apps). What am I missing? How do I setup this up? Answer sudo apt-get install opengl-4-man-doc opencl-1.2-man-doc contains many man pages, e.g.: man … Read more
I created a VBO (Vertex Buffer Object) and VAO (Vertex Array Objects) and did this: glBindVertexArray(vao); glBindBuffer(GL_ARRAY_BUFFER, vbo); glBufferData(…); glVertexAttribPointer(…); glEnableVertexAttribArray(0); glBindVertexArray(0); Can I delete the vbo after I did this and then draw with the vao assuming everything is in order? I know that the buffers bind to the vao so I am assuming … Read more
