yukijoou/kwin
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11 commits

Author SHA1 Message Date
Thomas Lübking
d48042a258 use correct luminance calculation for greyscale 2011-12-18 19:51:53 +01:00
Pierre-Loup A. Griffais
309ce4013a kwin-gles: save a branch in the main shader 
On less flexible hardware, one instruction for one branch might not be a good
trade.

REVIEW: 102886
 2011-10-17 20:26:53 +02:00
Martin Gräßlin
2fc1ed25a5 Add a define KWIN_SHADER_DEBUG to all shaders 
If the environment variable KWIN_GL_DEBUG is set to 1
the define KWIN_SHADER_DEBUG is added to the glsl
source code allowing to add some custom ifdefed
visual debug handling.

As an example it's added to scene-fragment.glsl to
paint everything in a greenish way.
 2011-07-23 18:57:50 +02:00
Fredrik Höglund
af92a4efd4 kwin: Rename sample to sampler in all shaders 
A sample is not the same thing as a sampler.
 2011-02-17 19:19:40 +01:00
Fredrik Höglund
73be6657ea kwin: Replace brightness and opacity with a modulation constant 
This makes it possible to adjust both brightness and opacity
at the same time with one multiplication in the fragment shader.
 2011-02-12 01:45:38 +01:00
Fredrik Höglund
28cf355b26 kwin: Fix a bug in the fragment shaders 
The alpha channel must be set to 1 before the sample is modulated
with the brightness and opacity constants, not after.
 2011-02-11 00:39:47 +01:00
Fredrik Höglund
5e97ccf7e0 kwin: Normalize the texcoords in the vertex shader 2011-02-10 20:15:23 +01:00
Martin Gräßlin
d683ce560c Adding new uniform to enforce that alpha becomes 1.0 
When rendering opaque (RGB-only) windows the alpha ends up to be 0
with blending disabled. This breaks subsequent rendering steps which
require blenden (e.g. Lanczos). Therefore a uniform is used to ensure
that the alpha channel is set to 1.
 2011-01-30 14:12:04 +01:00
Martin Gräßlin
69044f10c5 GLShader appends the ES specific commands to the shaders 2011-01-30 14:12:01 +01:00
Martin Gräßlin
5804417acc And here comes the working OpenGL ES backend 2011-01-30 14:11:57 +01:00
Martin Gräßlin
56ce39def8 Core profile compatible basic scene rendering. 
Adds a shader to render an untransformed scene. renderGLGeometry is not used any more and replaced by generated triangles stored in a GLVertexBuffer.
The GLVertexBuffer has a new attribute to decide whether a core profile compatible rendering has to be performed.
Currently windows and EffectFrames can make use of the new shader.
The shader contains a debug mode which colours all rendered fragments in green. It is currently enabled in scene_opengl.
Rendering transformed geometries (without shader) is currently broken.
 2011-01-30 14:11:55 +01:00