RGBCube/serenity
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16 commits

Author SHA1 Message Date
Stephan Unverwerth
b54573739c LibGL: Implement glTexEnvf 
This controls how fetched texels are combined with the color that was
produced by a preceding texture unit or with the vertex color if it is
the first texture unit.

Currently only a small subset of possible combine modes is implemented
as required by glquake.
 2021-08-26 19:54:31 +02:00
Stephan Unverwerth
19a08ff187 LibGL: Implement glPixelStorei 
This sets the length of a row for the image to be transferred. This
value is measured in pixels. When a rectangle with a width less than
this value is transferred the remaining pixels of this row are skipped.
 2021-08-26 19:53:57 +02:00
Stephan Unverwerth
39ff1459f8 LibGL: Improve texture sampling performance 
GL_NEAREST: Remove unnecessary modulo. UV is always in range due to
wrapping.
GL_LINEAR: Rewrite filter equation to save a few math operations.
 2021-08-18 20:30:58 +02:00
Stephan Unverwerth
59998ff0b2 LibGL: Return white texel when sampling uninitialized texture 2021-08-18 20:30:58 +02:00
Stephan Unverwerth
b38edf994b LibGL: Allow glTexImage2D to create uninitialized textures 
When passing a nullptr as the pixel array LibGL now allocates texture
memory but does not initialize the texture contents.
 2021-08-18 20:30:58 +02:00
Stephan Unverwerth
22905daacb LibGL: Fix interpretation of BGRA byte order 
This fixes byte order interpretation in several places.
 2021-08-18 20:30:58 +02:00
Stephan Unverwerth
00d527bc25 LibGL: Implement GL_LINEAR texture filter 2021-08-12 20:57:19 +02:00
Stephan Unverwerth
b9523e15df LibGL: Implement glTexParameter{i,f} 
This currently only implements a subset of this function.
Namely setting wrap, mag and min modes for the GL_TETXURE_2D target.
 2021-08-12 18:58:41 +02:00
Stephan Unverwerth
e0fef60241 LibGL: Implement "mirrored repeat" wrap mode 2021-08-12 18:58:41 +02:00
Stephan Unverwerth
8902efa52d LibGL: Implement "clamp" wrap mode 2021-08-12 18:58:41 +02:00
Stephan Unverwerth
12785849aa LibGL: Turn Sampler2D into an actual class 
This extracts the sampler functionality into its own class.
Beginning with OpenGL 3 samplers are actual objects, separate
from textures. It makes sense to do this already as it also
cleans up code organization quite a bit.
 2021-08-12 18:58:41 +02:00
Jesse Buhagiar
8298e406a4 LibGL: Use Texture Units in Rasterizer and Context 
The Context and Software Rasterizer now gets the array of texture units
instead of a single texture object. _Technically_, we now support some
primitive form of multi-texturing, though I'm not entirely sure how well
it will work in its current state.
 2021-05-31 14:59:47 +01:00
Jesse Buhagiar
52e5d3c961 LibGL: Implement basic texture units 
These are merely a way to hold the different texture target bind
points that a texture can be bound to.
 2021-05-31 14:59:47 +01:00
Stephan Unverwerth
fde0045ebe LibGL: Introduce Texture base class for all texture types 2021-05-30 00:32:37 +01:00
Jesse Buhagiar
4f324ba4d7 LibGL: Implement Texture State Management 
Some very primitive Texture State management. Data can now be
uploaded to textures.
 2021-05-26 16:36:53 +04:30
Jesse Buhagiar
21dff6d40b LibGL: Add Texture Name Allocation 
Texture names can now be allocated via
`glGenTextures` and deallocated via `glDeleteTextures`.
 2021-05-26 16:36:53 +04:30