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c++ Programming Glossary: gl_unsigned_byteHow to render offscreen on OpenGL? [duplicate] http://stackoverflow.com/questions/12157646/how-to-render-offscreen-on-opengl glReadBuffer GL_BACK glReadPixels 0 0 width height GL_BGRA GL_UNSIGNED_BYTE data 0 This will read the current back buffer usually the buffer.. GL_COLOR_ATTACHMENT0 glReadPixels 0 0 width height GL_BGRA GL_UNSIGNED_BYTE data 0 Return to onscreen rendering glBindFramebuffer GL_DRAW_FRAMEBUFFER.. pbo glReadPixels 0 0 width height GL_BGRA GL_UNSIGNED_BYTE 0 0 instead of a pointer it is now an offset in the buffer...
http://stackoverflow.com/questions/205522/opengl-subtexturing GL_TEXTURE_2D 0 GL_RGBA m_width m_height 0 GL_RGBA GL_UNSIGNED_BYTE m_data How can i get a sub image of that image loaded as a texture... GL_TEXTURE_2D 0 xOffset yOffset xWidth yHeight GL_RGBA GL_UNSIGNED_BYTE m_data doe nothing that i can see and calling glCopyTexSubImage2D.. GL_TEXTURE_2D 0 GL_RGBA sub_width sub_height 0 GL_RGBA GL_UNSIGNED_BYTE subimg glPixelStorei GL_UNPACK_ROW_LENGTH 0 Or if you're allergic..
Using OpenGL glutDisplayFunc within class http://stackoverflow.com/questions/3589422/using-opengl-glutdisplayfunc-within-class the class void myPixmap draw void glDrawPixels m n GL_RGB GL_UNSIGNED_BYTE pixel However gcc 4.2.1 on Mac OS X 10.6.4 refuses to compile..
http://stackoverflow.com/questions/5380717/opengl-texturing 3 myTextureData k .size_x myTextureData k .size_y GL_RGB GL_UNSIGNED_BYTE myTextureData k .data c opengl share improve this question..
Calculating normals in a triangle mesh http://stackoverflow.com/questions/6656358/calculating-normals-in-a-triangle-mesh glEnableClientState GL_VERTEX_ARRAY glIndexPointer GL_UNSIGNED_BYTE 0 indices glVertexPointer 3 GL_FLOAT 0 vertices glDrawElements.. other thing. In your code you have this glIndexPointer GL_UNSIGNED_BYTE 0 indices The index pointer has nothing to do with vertex array..
Segmentation fault at glGenVertexArrays( 1, &vao ); http://stackoverflow.com/questions/8302625/segmentation-fault-at-glgenvertexarrays-1-vao GL_TEXTURE_2D 0 GL_RGB TextureSize TextureSize 0 GL_RGB GL_UNSIGNED_BYTE image glTexParameterf GL_TEXTURE_2D GL_TEXTURE_WRAP_S GL_REPEAT.. GL_TEXTURE_2D 0 GL_RGB TextureSize TextureSize 0 GL_RGB GL_UNSIGNED_BYTE image2 glTexParameterf GL_TEXTURE_2D GL_TEXTURE_WRAP_S GL_REPEAT..
Problems converting YV12 to RGB through GLSL http://stackoverflow.com/questions/8977489/problems-converting-yv12-to-rgb-through-glsl ImgWidth ImgHeight 0 GL_LUMINANCE_ALPHA GL_UNSIGNED_BYTE ImageYUV assert glGetError GL_NO_ERROR glTexSubImage2D GL_TEXTURE_RECTANGLE_ARB.. 0 0 0 ImgWidth ImgHeight GL_LUMINANCE_ALPHA GL_UNSIGNED_BYTE ImageYUV assert glGetError GL_NO_ERROR delete ImageYUV glTexEnvi.. ImgWidth ImgHeight ImgHeight 2 0 GL_LUMINANCE GL_UNSIGNED_BYTE memblock I will leave it at that. Here are complete source codes..
Image scaling (KeepAspectRatioByExpanding) through OpenGL http://stackoverflow.com/questions/9011108/image-scaling-keepaspectratiobyexpanding-through-opengl _frame width _frame height _frame height 2 0 GL_LUMINANCE GL_UNSIGNED_BYTE _frame bits assert glGetError GL_NO_ERROR glTexEnvi GL_TEXTURE_ENV.. _frame width _frame height _frame height 2 0 GL_LUMINANCE GL_UNSIGNED_BYTE _frame bits assert glGetError GL_NO_ERROR glTexEnvi GL_TEXTURE_ENV..
Converting data from glReadPixels() to OpenCV::Mat http://stackoverflow.com/questions/9097756/converting-data-from-glreadpixels-to-opencvmat cv Mat would be glReadPixels 0 0 img.cols img.rows GL_BGR GL_UNSIGNED_BYTE img.data Finally OpenCV stores images from top to bottom. So..
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