According to the Khronos FAQ on texture edge sampling, the `GL_CLAMP`
option was never implemented in hardware and as such, it was
deprecated. A lot of applications and games depend on `GL_CLAMP` not
really meaning `GL_CLAMP` but `GL_CLAMP_TO_EDGE`, so we introduce an
option to toggle this behavior at compile-time.
According to the documentation, we should switch around vertices every
other triangle to prevent front-face culling from removing them.
This allows Tux in Tux Racer to render correctly.
This adds a method `info()` to SoftGPU that returns the name of the
hardware vendor and device name, as well as the number of texture untis.
LibGL uses the returned texture unit count to initialize its internal
texture unit array.
Replaces the GLenum used in RasterizerConfig to select the draw buffer
with a simple boolean that disabled color output when the draw buffer
is set to GL_NONE on the OpenGL side.
We now sample textures from the device owned image samplers.
Passing of enabled texture units has been simplified by only passing a
list of texture unit indices.
This adds two methods, write_texels and read_texels, to the Image class.
Conversion between image formats happens automatically. The layout of
the client image data is passed in via ImageDataLayout struct.
This serves as the storage for all image types. 1D, 2D, 3D, Cube and
image arrays.
Upon construction a full mipmap chain is generated and the image is
immutable afterwards with respect to its layout.
This introduces a new library, LibSoftGPU, that incorporates all
rendering related features that formerly resided within LibGL itself.
Going forward we will make both libraries completely independent from
each other allowing LibGL to load different, possibly accelerated,
rendering backends.
