https://github.com/fenbf/soil_ext

Updates to the SOIL image lib: mipmaps, core opengl
https://github.com/fenbf/soil_ext

Last synced: about 1 month ago
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Updates to the SOIL image lib: mipmaps, core opengl

• Host: GitHub
• URL: https://github.com/fenbf/soil_ext
• Owner: fenbf
• License: unlicense
• Created: 2013-09-03T18:40:08.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2013-10-05T16:25:48.000Z (over 11 years ago)
• Last Synced: 2023-10-20T19:49:14.759Z (over 1 year ago)
• Language: C
• Homepage:
• Size: 1.37 MB
• Stars: 15
• Watchers: 7
• Forks: 7
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md
  • License: LICENSE

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README

        
#Simple OpenGL Image Library *Ext*#

[The original SOIL from July 7, 2008](http://www.lonesock.net/soil.html) is released with **Public Domain Licence**.

The **Ext** version contains the following changes:

* **[in progress]** Added option to use immutable texture storage

 * When possible (when extension is supported) library can create texture using glTextureStorage and then call glTexSubImage.

 * See more here [OpenGL wiki](http://www.opengl.org/wiki/Texture_Storage)

* **[done]** Mipmap generation using glGenerateMipmap

 * Original library scaled image to be POT and then used custom procedure to generate mipmaps. This can take some time.

 * This change uses glGenerateMipmapEXT (if GL\_EXT\_framebuffer\_object extension is available). This way Soil can create mipmaps for NPOT textures and use hardware support.

 * New flag is added: **SOIL\_FLAG\_GL\_MIPMAPS**. It can be passed to the SOIL\_load_OGL\_texture\* procedures. If the extension (GL\_EXT\_framebuffer\_object) is not supported then function uses the same process as when passing **SOIL\_FLAG\_MIPMAPS**.

* **[done]** upgraded to the version **1.33** of [stb_image](http://www.nothings.org/stb_image.c)

 * stb_image_write.c/.h were created. Those files contain missing functionality that was cut from the newer version of stbi (cut in 1.22)  

* **[done]** Using only Modern OpenGL functionalities (when possible)

 * *CLAMP\_TO\_EDGE* instead of *GL\_CLAMP*

 *  *glGetStringi* instead of *glGetString(GL\_EXTENSIONS)* 

* **[done]** Visual Studio 2012 Express solution

 * It compiles without any warnings: used *\_CRT\_SECURE\_NO\_WARNINGS* and several code changes regarding *int/float* cast and *signed/unsigned* comparisons.

 * Added **test_soil** project to the solution. Console is showed to display basic loader info.

 * Building with `Debug Information Format` set to `""` (Empty). That way output file is smaller and there are no warnings about missing pdb files.

* **[done]** Added test\_perf\_SOIL test project

 * Tests performance of **SOIL\_FLAG\_GL\_MIPMAPS** vs **SOIL\_FLAG\_MIPMAPS**

 * Loads 10... or 100 textures and measures elapsed time.

###Notes###

* Original functionality is preserved and should work as expected.

* Doc comments were updated to describe changes

* Needs more testing :)