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c++ Programming Glossary: texglTexImage2D 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 The issue is that when I specify an OpenGL context with a version above 3 ie glutInitContextVersion 3 2 Calling.. an OpenGL context with a version above 3 ie glutInitContextVersion 3 2 Calling glTexImage2D results in a GL_INVALID_ENUM.. 15 42 05 2012 Diagnostic Unknown function wglCreateContextAttribsARB being logged. GL ERROR Function wglGetPixelFormat..
Pointers on modern OpenGL shadow cubemapping? http://stackoverflow.com/questions/13999830/pointers-on-modern-opengl-shadow-cubemapping but my understanding of them is that a cubemap is six textures seamlessly attached. I did some looking around but unfortunately.. is set up like directional shadowmapping A single cubemap texture is then generated and bound with glBindTexture GL_TEXTURE_CUBE_MAP.. 1024 1024 0 GL_DEPTH_COMPONENT GL_FLOAT NULL The texture is attached to the framebuffer with a call to glFramebufferTexture..
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 the tangent vector right after transferring it to vertex shader The shadow is in the wrong place. And it works only when.. functions and exactly the same cube position normal and texture coordinate data as in working demo. After all I exported.. in working demo. After all I exported arrays with position texcoord normal tangent data into a .txt file and I saw what I exactly..
Problems converting YV12 to RGB through GLSL http://stackoverflow.com/questions/8977489/problems-converting-yv12-to-rgb-through-glsl DrawObject void glBegin GL_QUADS glTexCoord2f 0 0 glVertex2f 1.0 1.0 glTexCoord2f ImgWidth 0 glVertex2f 1.0 1.0 glTexCoord2f.. 0 0 glVertex2f 1.0 1.0 glTexCoord2f ImgWidth 0 glVertex2f 1.0 1.0 glTexCoord2f ImgWidth ImgHeight glVertex2f 1.0 1.0.. 0 glVertex2f 1.0 1.0 glTexCoord2f ImgWidth ImgHeight glVertex2f 1.0 1.0 glTexCoord2f 0 ImgHeight glVertex2f 1.0 1.0 glEnd..
Image scaling (KeepAspectRatioByExpanding) through OpenGL http://stackoverflow.com/questions/9011108/image-scaling-keepaspectratiobyexpanding-through-opengl image scaling in OpenGL using only glTexCoord2f and glVertex2f . Let me explain after loading a QImage and sending it to.. static const char p_s_fragment_shader #extension GL_ARB_texture_rectangle enable n uniform sampler2DRect tex uniform float.. GL_ARB_texture_rectangle enable n uniform sampler2DRect tex uniform float ImgHeight chromaHeight_Half chromaWidth void main..
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