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4 Commits

Author SHA1 Message Date
Elias Naur dd6a247326 gpu/backend: add support for desktop OpenGL 3 
In particular, add the GLSL 1.30 shader variant. Sigh.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-02-27 21:22:59 +01:00
Elias Naur 29d36e11ee gpu/shaders: use correct type for integer vector 
OpenGL supports casting from int to float during vertex array
reading. Direct3D doesn't. Since we're transpiling from GLSL, we can't
directly use the Direct3D builtin "asint". So that leaves using
"ivec2" instead of vec2.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-02-27 21:22:59 +01:00
Elias Naur 0d266c413d gpu,gpu/backend: implement GLSL 300 es shader variants 
Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-02-27 20:34:58 +01:00
Elias Naur 5cd5d49108 gpu/backend: move backend interface types to a separate package 
Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-02-27 20:34:22 +01:00