Commit Graph

7 Commits

Author SHA1 Message Date
Timm Bäder
5c7838e168 gl renderer: Rework program creation
Make sure all uniform names have to match between the shader names and
the _location integers we save in every Program struct.
2017-12-21 19:12:31 +01:00
Timm Bäder
f4304336ea gl renderer: Don't pass MVP to shaders
We already pass both modelview and projection matrix individually.
2017-12-21 19:12:30 +01:00
Timm Bäder
6bce14bee2 Rework the GL renderer 2017-12-21 18:25:52 +01:00
Emmanuele Bassi
1ab1fd4391 Use the projection to flip around the content
Since we use an FBO to render the contents of the render node tree, the
coordinate space is going to be flipped in GL. We can undo the flip by
using an appropriate projection matrix, instead of changing the sampling
coordinates in the shaders and updating all our coordinates at render
time.
2016-10-18 11:49:10 +01:00
Emmanuele Bassi
03ab560fae gsk: Rename uniforms and attributes in shaders
Use appropriate names, and annotate the names with the types — 'u' for
uniforms, 'a' for attributes. The common preambles for shaders are split
from the bodies, so we need some way to distinguish the uniforms and the
attributes just from their name.
2016-10-18 11:49:09 +01:00
Emmanuele Bassi
0fbf638999 gsk: Add 'blit' program
For the root node we do not need to use blending, as it does not have
any backdrop to blend into. We can use a simpler 'blit' program that
only takes the content of the source and fills the texture quad with
it.
2016-10-18 11:49:08 +01:00
Emmanuele Bassi
28b490f14f gsk: Rework how GLSL shaders are built
The GL renderer should build the GLSL shaders using GskShaderBuilder.
This allows us to separate the common parts into separate files, and
assemble them as necessary, instead of shipping one big shader per type
of GL API (GL3, GL legacy, and GLES).
2016-10-18 11:49:07 +01:00