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https://developer.apple.com/library/archive/documentation/GraphicsImaging/Conceptual/OpenGL-MacProgGuide/opengl_texturedata/opengl_texturedata.html
The rectangle texture extension (ARB_texture_rectangle) was introduced to allow texture targets for textures of any dimensions—that is, rectangle textures (GL_TEXTURE_RECTANGLE_ARB). You need to use the rectangle texture extension together with the Apple texture range extension to ensure OpenGL uses DMA to access your texture data.
https://stackoverflow.com/questions/13551622/is-rectangle-texture-supported-by-gles-2-0
I knew from a website that rectangle texture can be used for screen-sized images. However, for the function glGetTexParameterfv, only GL_TEXTURE_2D and GL_TEXTURE_CUBE_MAP are accepted. Does it mean that rectangle texture, or GL_TEXTURE_RECTANGLE, is not supported by OpenGL ES 2.0?And I am wondering whether it means only normalized texture coordinate can be used in shaders?
https://knowledge.autodesk.com/support/maya-lt/learn-explore/caas/CloudHelp/cloudhelp/2015/ENU/MayaLT/files/GUID-643AAA6E-58A0-478C-B8FE-D19FE080E05F-htm.html
The Layout rectangle command lets you create an evenly distributed UV rectangle from a selection of two vertices in the 0 to 1 texture space. To layout UVs using the Layout rectangle feature In the scene view, select the faces you want to include in the UV rectangle. The faces are highlighted in the UV Texture Editor. Select the corner vertices of these faces.
https://blog.kivy.org/2011/06/npot-textures-support-in-opengl/
Jun 05, 2011 · The usage of a specific texture target: GL_TEXTURE_RECTANGLE_NV; No mipmap support; The texture coordinates are not normalized from 0-1… but from 0-width/height of the image; Some wrap mode are not supported (GL_REPEAT for eg.) But today… i discover that most graphics card are supporting rectangle texture.
https://community.khronos.org/t/fbo-ati-and-rectangle-textures/34178
Mar 17, 2019 · [QBI understand NPOT is the way to go in the future, but I still don’t get why ATI can’t support ARB_texture_rectangle. They have EXT_texture_rectangle support and it works just fine. I can sample rects in ARB_fragment_program as well. All they have to do is add GLSL support and then they can say they have ARB_texture_rectangle support.
https://github.com/RPCS3/rpcs3/pull/1467
Emulate samplerRect in fragment shaders. Allows outrun to display correctly on screen. Some glitches remain, but those are resolved by #1461 EDIT: I'm checking what fixes the odd view scaling. It works fine on one of my branches without #1461
https://community.khronos.org/t/rectangle-texture/50466
Mar 17, 2019 · Yes, the texture coordinates thing is pretty odd, but since that’s the way it started, better continue like that. Im just using this extension as a render to texture, and then render back to framebuffer as a quad with texture. There is even a NV_render_texture_rectangle just for this in case anyones interested. Thank you VBO!
https://www.gamedev.net/forums/topic/433554-generic-rectangular-texture-support/
Jan 23, 2007 · Generic Rectangular Texture Support Started by DIB with 5 replies, last by GameDev.net on January 22, 2007 02:49 PM. Graphics and GPU Programming Programming. DIB 162. January 22, 2007 02:49 PM. I am writing some software that I am using rectangular textures in. It works fine on many cards, but not on others.
https://kivy.org/doc/stable/api-kivy.graphics.texture.html
That means your width and height can be one of 64, 32, 256… but not 3, 68, 42. NPOT means non-power-of-two. OpenGL ES 2 supports NPOT textures natively but with some drawbacks. Another type of NPOT texture is called a rectangle texture. POT, NPOT and textures all have their own pro/cons.
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