Enhancer Software Development Progress: Warp3D Nova and OpenGL

Version 1.40 - 2017/04/08
- Added 4K UHD support to W3DNLogo (added the screenmodes)
- W3DNLogo's screen-mode selection code wasn't always selecting 32-bit
screenmodes. FIXED
- W3DN_SI: Implemented smart register allocator. Can now handle larger more complex
shaders

Version 1.39 - 2017/02/24
- Added the DepthCube example (demonstrates using depth-textures)
- W3DN_SI: Added depth-texture support
- W3DN_SI: Using gl_FragDepth caused GPU to lock up. FIXED
- DDK: Added depth-texture unit tests
- DDK: Added a gl_FragDepth test
- Corrected the GetViewport() documentation
- Misc. fixes

Version 1.38 - 2017/02/10
- Added the RenderToTex example (demonstrates the W3DN_Q_RENDERTOTEXTURE feature)
- Added the BitMapCube example (demonstrates the W3DN_Q_BITMAPASTEXTURE feature)
- Some autodoc fixes (e.g., BindTexture()'s documentation was incomplete)
- W3DN_GetTexFmtInfo() had a bug that prevented getting info for "special" formats
(e.g., W3DNPF_SRGB8). FIXED
- Added bitmap-to-texture support (in main lib and W3DN_SI)
- DDK: Added bitmap-as-texture tests

Version 1.37 - 2017/02/01
- FBGetBuffer*() functions were named incorrectly in header files. FIXED
- Added the W3DNEC_EXCEEDEDMAXDIM error code
- W3DN_SI: Implemented render-to-texture
- DDK: Added render-to-texture tests

Version 1.36 - 2017/01/18
- W3DN_SI: Added function call support to the shader compiler
- W3DN_SI: Fixed an optimizer bug (could cause compilation to fail with matrix
local vars)
- DDK: Added function call unit tests

OpenGL ES 2 for AmigaOS4 / Warp3D Nova
Version 1.14 is available to registered A-EON beta-coders and this is what's inside:

- Fix: wow, you really shouldn't follow the OGL specs blindly... Those specs (and all docs I found on the web contain that misinformation) say that the texture format GL_ALPHA essentially behaves like RGBA data with A set to the respective value and RGB set to ZERO! This is plain wrong of course if you think of it for a second - but I have to admit I didn't think that long... Fixed it to set RGB all to ONE.

- Support for anisotropic filtering GL extensions. Those are not part of the OGLES2.0 standard but quite nice - and have been requested by Frank Menzel from Entwickler-X :) This means:
- glTexParameter now supports GL_TEXTURE_MAX_ANISOTROPY_EXT to set a texture's anisotropy.
- glGetTexParameter now supports GL_TEXTURE_MAX_ANISOTROPY_EXT to get a texture's current anisotropy.
- glGet now supports GL_TEXTURE_MAX_ANISOTROPY_EXT, return GL_TRUE if the driver supports anisotropy.
- glGet now supports GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT to query the largest supported anisotropy.

- Since version 1.37 Nova supports render-to-texture. I had implemented that feature blindly before already, but as it turned out it wasn't bug-free:
Fix: glViewport and glScissor now consider the different coordinate system used if using textures as render targets. Not doing this resulted in weird buggy rendering results (e.g. picture flipped vertically, areas not drawn to and showing uninitialized texture RAM, etc.). Thanks to Frank Menzel for reporting!

- Support for tex-format GL_DEPTH_COMPONENT with pixel-format GL_FLOAT. This is not part of the OGLES2.0 standard but quite useful for render-to-texture. Again, requested by Frank Menzel.

- OpenGL ES 3 headers added (platform include adjusted) for convenience (download fresh include folder!). Hans asked for this to simplify porting of progs that actually only use the OGLES 2 API but include OGLES3 headers nevertheless.

- Applied some branch hints to all the parameter checkers / GL-error-handlers (asuming that in 99% of the time the coder knows what (s)he does). Every cycle counts ;)

- Improved dual GPU support. While it worked in general since the previous version, it could easily happen that you ended up with a context for the wrong GPU nevertheless. Only if you left all window / screen control to the lib you actually got what you wanted. In practive however you maybe need more control. Therefore there are two improvements regarding context-creation:
1. if you supply a window handle then the lib will now automatically check on which screen this window has been created. The lib will then use the GPU best matching that screen.
2. there's a new parameter for aglCreateContext: OGLES2_CCT_CONTEXT_FOR_MODEID. You can use that to tell the lib for which screen-mode-id you'd like to get a context - without the lib creating any screen by itself.