opengl

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How to render depth linearly in modern OpenGL with gl_FragCoord.z in fragment shader?

I read lots of information about getting depth with fragment shader. such as http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=234519[详细]

2023-04-13 10:06 分类：问答
Obtaining normal of vertices of torus mesh

I\'m trying to create my own torus with smooth shading.However, the normal seems to be wrong.Here is my code.[详细]

2023-04-13 09:08 分类：问答
Getting the Mouse window coordinates in OpenTK (C#~.NET)

I\'m creating a GUI that has 1 to many OpenGL view forms. Now the basics are working, I have a list of Viewer Forms and each encapsulates an OpenTK.GLControl member in its designer class.[详细]

2023-04-13 08:46 分类：问答
Drawing Steiner's Roman Surface in OpenGL

I\'m trying to draw Steiner\'s Roman Surface in OpenGL, and I\'m having some trouble getti开发者_开发知识库ng the right normals so that the surface lights up correctly. I used the parametric equation[详细]

2023-04-13 06:17 分类：问答
OpenGL Transform Feedback got reverse-order result

I tried to use the transform feedback function, and I made 2 vertex shaders which only affects vertex position.[详细]

2023-04-13 05:08 分类：问答
Rotating cube to show only one side

I have a 3D-cube made with opengl which rotates randomly and stopps occasionally showing up to 3 of its sides. I 开发者_如何学Cwould like to have the cube falling onto one of the sides (x, -x, y, -y,[详细]

2023-04-13 04:39 分类：问答
OpenGL - Vertex Array inside a VBO and Index & Texture Array outside?

Is it possible to place a set of Vertices into a VBO, but take the Index and Texture coor开发者_C百科d. Arrays from regular memory? If yes, which syntax to use?Yes, it is possible to do this. But you[详细]

2023-04-13 04:25 分类：问答
2D display looks weird in OpenGL

Currently I am writing a video player in OpenGL. I call gluOrtho2D like this: gluOrtho2D(0, w, 0, h); And output it with:[详细]

2023-04-13 04:11 分类：问答
how to get relative x and y position from mouse click

In my mouse callback, i need to find out where the mosuebutton was clicked relative to the origin(so I need the -1 to 1 value) In the mosue calledback, the GLint is return the value 400 or whatever th[详细]

2023-04-13 04:03 分类：问答
OpenGL texture upload: UNSIGNED_BYTE vs UNSIGNED_INT_8_8_8_8

I\'m calling glTexSubImage2D. If my pixel format is GL_RGBA, then are the pixel types GL_UNSIGNED_BYTE and GL_UNSIGNED_INT_8_8_8_8 fully equivalent?[详细]

2023-04-13 04:02 分类：问答