Tag: opengl

269 Once upon a time, when > was faster than < ... Wait, what? 2011-09-07T18:39:29.907

192 How do you render primitives as wireframes in OpenGL? 2008-09-26T03:39:30.273

186 How are 3D games so efficient? 2010-02-07T17:19:52.273

185 What is state-of-the-art for text rendering in OpenGL as of version 4.1? 2011-03-10T16:48:27.680

161 How to debug a GLSL shader? 2010-03-24T15:11:37.670

125 What does glLoadIdentity() do in OpenGL? 2009-03-10T03:04:35.877

116 Differences and relationship between glActiveTexture and glBindTexture 2012-01-15T01:36:50.753

115 What is the correct file extension for GLSL shaders? 2011-06-21T22:35:52.713

113 What's the concept of and differences between Framebuffer and Renderbuffer in OpenGL? 2010-02-06T12:14:15.913

112 Using OpenGl with C#? 2009-02-11T09:22:53.783

93 opengl: glFlush() vs. glFinish() 2010-01-26T22:41:16.863

93 Vertex shader vs Fragment Shader 2010-12-12T10:41:29.770

91 glVertexAttribPointer clarification 2012-01-02T19:58:06.457

90 What are Vertex Array Objects? 2012-08-06T00:30:58.037

89 The purpose of Model View Projection Matrix 2011-04-05T10:49:04.360

88 How to make an OpenGL rendering context with transparent background? 2010-10-29T14:47:25.787

80 How to compile for Windows on Linux with gcc/g++? 2010-01-09T16:27:29.867

78 Python - No handlers could be found for logger "OpenGL.error" 2008-12-06T05:59:43.397

76 Is OpenGL coordinate system left-handed or right-handed? 2010-11-08T13:00:30.487

76 How does OpenGL work at the lowest level? 2011-06-19T00:05:35.393

76 Drawing Sphere in OpenGL without using gluSphere()? 2011-10-07T12:20:55.303

75 OpenGL VAO best practices 2012-01-19T08:42:55.417

71 What does "immediate mode" mean in OpenGL? 2011-07-18T13:49:50.897

70 How to use glOrtho() in OpenGL? 2010-04-03T13:50:58.243

70 OpenGL ES versus OpenGL 2010-12-23T13:44:06.643

69 How does the fragment shader know what variable to use for the color of a pixel? 2012-02-10T03:14:50.980

67 Why does OpenGL use degrees instead of radians? 2010-01-27T12:49:03.703

64 OpenGL vs. OpenCL, which to choose and why? 2011-10-26T18:57:26.940

63 Passing a list of values to fragment shader 2011-10-31T14:17:18.323

62 How to get the GL library/headers? 2010-10-14T12:24:05.603

61 What is the role of glBindVertexArrays vs glBindBuffer and what is their relationship? 2014-02-08T22:25:41.530

60 What is so bad about GL_QUADS? 2011-07-10T22:15:53.983

59 Confusion between C++ and OpenGL matrix order (row-major vs column-major) 2013-07-18T07:46:54.017

57 What is the best way to debug OpenGL? 2009-02-05T21:36:27.213

57 GLSL/C++: Arrays of Uniforms? 2011-11-11T21:06:05.840

54 Abysmal OpenCL ImageSampling performance vs OpenGL TextureSampling 2012-06-11T16:18:12.950

52 How do opengl texture coordinates work? 2011-04-03T21:16:59.543

52 Rendering SVG with OpenGL (and OpenGL ES) 2011-06-09T02:59:19.003

51 Why use hexadecimal constants? 2012-06-06T18:59:46.083

51 What is the difference between OpenCL and OpenGL's compute shader? 2013-04-07T22:16:30.450

49 set the texture for by glUniform1i 2012-03-12T04:46:35.277

48 What are some best practices for OpenGL coding (esp. w.r.t. object orientation)? 2008-10-03T11:07:08.567

48 Segmentation fault at glGenVertexArrays( 1, &vao ); 2011-11-28T21:32:24.303

48 Is WPF 3D good alternate of DirectX and OpenGL for complex applications? 2012-01-20T12:19:25.673

48 Proper way to delete GLSL shader? 2012-02-02T13:28:45.770

48 Rendering meshes with multiple indices 2012-06-22T00:05:01.737

48 How do you install GLUT and OpenGL in Visual Studio 2012? 2012-08-29T05:18:02.683

46 Why does my OpenGL Phong shader behave like a flat shader? 2011-01-16T02:20:23.873

46 Why would it be beneficial to have a separate projection matrix, yet combine model and view matrix? 2012-05-16T11:29:55.060

46 What can cause glDrawArrays to generate a GL_INVALID_OPERATION error? 2012-08-18T08:36:03.560

45 Efficient off-screen rendering of QPainterPaths (OpenGL and non-OpenGL solution required) 2012-07-13T15:59:55.870

44 Getting the true z value from the depth buffer 2011-07-11T15:07:03.120

44 Understanding glm::lookAt() 2014-02-17T13:27:14.090

43 What are the differences between a Frame Buffer Object and a Pixel Buffer Object in OpenGL? 2009-04-14T15:37:03.013

43 Learning OpenGL in Ubuntu 2009-05-13T18:13:00.580

43 Camera position in world coordinate from cv::solvePnP 2013-09-05T13:20:01.457

43 How does glDrawArrays know what to draw? 2013-09-30T19:26:13.657

42 OpenGL vs OpenGL ES 2.0 - Can an OpenGL Application Be Easily Ported? 2009-07-24T18:07:50.133

42 How to calculate Tangent and Binormal? 2011-03-10T05:23:12.720

40 When should I use indexed arrays of OpenGL vertices? 2010-06-02T00:54:23.147

40 difference of freeglut vs glew? 2013-03-25T11:38:17.843

40 X hangs up because of application (use C++, Qt, OpenGL) 2013-11-22T11:53:02.847

39 Overlaying on a 3D fullscreen application 2009-05-29T13:32:12.710

39 How to do OpenGL live text-rendering for a GUI? 2010-01-15T13:07:44.517

39 OpenGL 4.x learning resources 2010-08-09T10:43:06.463

39 What exactly does glEnableVertexAttribArray do? 2011-08-09T17:12:06.217

39 How to Practically Ship GLSL Shaders with your C++ Software 2013-12-07T16:17:24.230

38 In OpenGL is there a way to get a list of all uniforms & attribs used by a shader program? 2009-01-13T18:20:03.047

38 ffmpeg video to opengl texture 2011-06-27T15:53:57.190

38 Calculating normals in a triangle mesh 2011-07-11T20:47:42.663

38 Concept behind OpenGL's 'Bind' functions 2012-03-18T13:59:37.847

37 Initializing OpenGL without GLUT 2009-05-18T18:07:15.853

37 Learning modern OpenGL 2012-01-04T20:38:17.393

37 Why transforming normals with the transpose of the inverse of the modelview matrix? 2012-11-30T22:59:08.893

37 Should I calculate matrices on the GPU or on the CPU? 2013-05-18T02:03:30.210

36 When are VBOs faster than "simple" OpenGL primitives (glBegin())? 2009-01-10T04:29:24.117

36 Vertex shader attribute mapping in GLSL 2011-02-02T11:03:20.833

35 Organizing GLSL shaders in OpenGL engine 2011-01-10T17:53:40.323

35 Using OpenGL with Python 2012-08-25T12:22:30.540

35 Packing arbitrary triangles into a finite box? 2014-07-14T10:55:55.370

35 What actually handles the drawing of the Windows Wallpaper? 2015-06-04T06:10:15.607

34 In OpenGL vertex shaders, what is w, and why do I divide by it? 2010-03-11T05:29:23.500

34 Why are SDL and OpenGL related? 2011-04-24T06:20:54.913

34 Visualising 4D objects in OpenGL 2011-08-08T21:14:49.350

34 VBOs with std::vector 2011-08-24T09:55:03.160

34 How to initialize a glm::mat4 with an array? 2011-09-08T16:49:45.247

34 jMonkey optimization similar to Java3D's 2012-11-12T21:55:57.767

34 gluPerspective parameters- what do they mean? 2013-05-15T18:02:49.410

33 What does it mean to normalize a value? 2012-07-25T07:05:33.290

33 Does If-statements slow down my shader? 2016-06-15T05:59:34.793

32 how to enable vertical sync in opengl? 2009-02-26T04:07:14.017

32 What does ARB mean in the opengl functions? 2010-01-09T13:42:24.353

32 Pygame water ripple effect 2011-10-04T12:43:56.433

32 How to draw text using only OpenGL methods? 2012-01-13T08:44:07.207

31 Using the mouse scrollwheel in GLUT 2008-08-18T09:29:34.593

31 Implementing Ray Picking 2010-01-19T11:34:18.100

31 Where can I find a good online OpenGL 3.0 tutorial that doesn't use any deprecated functionality? 2010-12-30T01:17:11.403

31 Understanding Vertex Array Objects (glGenVertexArrays ) 2011-05-11T20:17:19.170

31 How to render offscreen on OpenGL? 2012-08-28T10:46:28.940