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c++ Programming Glossary: glpixelstoreiglTexImage2D failing in GLUT/FreeType example with OpenGL 3 and above http://stackoverflow.com/questions/11150983/glteximage2d-failing-in-glut-freetype-example-with-opengl-3-and-above 0 We require 1 byte alignment when uploading texture data glPixelStorei GL_UNPACK_ALIGNMENT 1 Clamping to edges is important to prevent..
Reading from framebuffer GLSL to OpenCV http://stackoverflow.com/questions/14981881/reading-from-framebuffer-glsl-to-opencv following code is executed at each frame. cv Mat pixels glPixelStorei GL_PACK_ALIGNMENT pixels.step 3 1 4 glReadPixels 0 0 1024 1024..
http://stackoverflow.com/questions/205522/opengl-subtexturing Thanks c opengl share improve this question Edit Use glPixelStorei. You use it to set GL_UNPACK_ROW_LENGTH to the width in pixels.. GL_UNPACK_ROW_LENGTH to 0 when you're finished with it. Ie glPixelStorei GL_UNPACK_ROW_LENGTH img_width char subimg char m_data sub_x.. sub_width sub_height 0 GL_RGBA GL_UNSIGNED_BYTE subimg glPixelStorei GL_UNPACK_ROW_LENGTH 0 Or if you're allergic to pointer maths..
Again - parallax mapping issue in OpenGL, GLSL. It's not as usual as it seem to be http://stackoverflow.com/questions/4750707/again-parallax-mapping-issue-in-opengl-glsl-its-not-as-usual-as-it-seem-to glClearColor 0.0f 0.0f 0.0f 0.0f glClearDepth 1.0f glPixelStorei GL_UNPACK_ALIGNMENT 1 glDepthFunc GL_LEQUAL glEnable GL_DEPTH_TEST..
http://stackoverflow.com/questions/5380717/opengl-texturing data i 2 image data i 2 temp return 1 void textureLoader glPixelStorei GL_UNPACK_ALIGNMENT 1 for int k 0 k textureCount k if imageLoader..
Problems converting YV12 to RGB through GLSL http://stackoverflow.com/questions/8977489/problems-converting-yv12-to-rgb-through-glsl printf Sorry GL_ARB_texture_rectangle is required n exit 0 glPixelStorei GL_UNPACK_ALIGNMENT 1 glBindTexture GL_TEXTURE_RECTANGLE_ARB..
Image scaling (KeepAspectRatioByExpanding) through OpenGL http://stackoverflow.com/questions/9011108/image-scaling-keepaspectratiobyexpanding-through-opengl texture 0 if texture 0 context deleteTexture texture glPixelStorei GL_UNPACK_ALIGNMENT 1 glBindTexture GL_TEXTURE_RECTANGLE_ARB.. texture 0 if texture 0 context deleteTexture texture glPixelStorei GL_UNPACK_ALIGNMENT 1 glBindTexture GL_TEXTURE_RECTANGLE_ARB..
Converting data from glReadPixels() to OpenCV::Mat http://stackoverflow.com/questions/9097756/converting-data-from-glreadpixels-to-opencvmat modes use fast 4 byte alignment default anyway if possible glPixelStorei GL_PACK_ALIGNMENT img.step 3 1 4 set length of one complete.. row in destination data doesn't need to equal img.cols glPixelStorei GL_PACK_ROW_LENGTH img.step img.elemSize Next the type of the..
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