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19 commits

Author SHA1 Message Date
Philipp Knechtges
ef9aeafe0d kwin: Optimizing Blur Part II 
This patch adds an optional texture cache to the blur effect such that damaged windows in
front of the blurred region dont trigger a repaint of the whole blurred region which pretty
often results in a avalanche repaint of nearly the whole screen.

REVIEW: 101977
 2011-09-18 02:01:31 +02:00
Jaime Torres
26a492eb4a reduce the scope of two variables 
reduce the scope of two variables

REVIEW: 102057
 2011-08-02 17:26:21 +02:00
Fredrik Höglund
6bc8cb93da kwin/blur: Pack varyings in the GLSL shader 
Pack two vec2 coordinates in each vec4 varying. This gives
a ~60% improvement in shader performance with R600G.
 2011-05-15 21:25:34 +02:00
Martin Gräßlin
818a936e99 Only use GLSL blur shader if ShaderManager is valid 2011-04-29 16:44:48 +02:00
Martin Gräßlin
a728823fbe Fix passing matrixes to the shaders 
QMatrix4x4 accepts data in row-major order, but returns them in
column-major order, which is not documented and because of that
I expected them to be in row-major order.
This commit fixes it and rewrites the shaders to apply the matrix
multiplications in the right order.
REVIEW: 100759
 2011-03-06 09:13:31 +01:00
Martin Gräßlin
0827c2903b Use GLPlatform to decide whether shaders are supported 
Dropping the static methods from GLShader and use supports()
where it was used before.
 2011-02-19 11:08:43 +01:00
Martin Gräßlin
0a7e48f7aa KWin uses kdelibs coding style. 2011-01-31 20:07:03 +01:00
Martin Gräßlin
8c4fc28e1a Blur ported to GLES. 
It now uses a GLShader for GLSL shaders and pushes it using the
ShaderManager.

It does not work with the nouveau driver plus GLES, but it works
with fglrx + desktop GL 2.x, so I assume it is a driver problem here.
 2011-01-30 14:12:06 +01:00
Martin Gräßlin
6270b502ba ARB Shader fallback to Lanczos filter. 
This allows using Lanczos filter also on systems not supporting GLSL.
See http://svn.reviewboard.kde.org/r/5777/

svn path=/trunk/KDE/kdebase/workspace/; revision=1195273
 2010-11-10 18:25:40 +00:00
Fredrik Höglund
08f51821b7 Don't set gl_TextCoord[0] in the vertex shader when the fragment 
shader doesn't use it.

svn path=/trunk/KDE/kdebase/workspace/; revision=1178357
 2010-09-22 20:13:01 +00:00
Fredrik Höglund
62b9c59da6 Rewrite the fragment program to avoid exceeding the texture indirection 
limit on some GPU's.

Thanks to Mikael Gerdin, Christoph Feck and Iori Yagami for testing.

svn path=/trunk/KDE/kdebase/workspace/; revision=1138004
 2010-06-14 22:13:48 +00:00
Fredrik Höglund
253647ec1e Sanity check the shader limitations to protect against implementations 
returning bogus values.

FIXED-IN: 4.5
BUG: 241449

svn path=/trunk/KDE/kdebase/workspace/; revision=1137677
 2010-06-14 00:18:04 +00:00
Fredrik Höglund
b13174e785 Tweak the code in the fragment shader to get the Mesa GLSL compiler to emit 
MAD's instead of MUL + ADD.

svn path=/trunk/KDE/kdebase/workspace/; revision=1136438
 2010-06-09 20:59:24 +00:00
Fredrik Höglund
69ab6ec3b7 Use GL_CONSTANT_ALPHA instead of reducing the opacity in the fragment shader. 
This makes the blending work correctly when the alpha bits are zero,
which is apparently the case with NVidia.

svn path=/trunk/KDE/kdebase/workspace/; revision=1102471
 2010-03-12 16:10:57 +00:00
Fredrik Höglund
c82351488e Make sure that both the render target and the shader are valid 
before using them.

svn path=/trunk/KDE/kdebase/workspace/; revision=1102465
 2010-03-12 15:56:19 +00:00
Fredrik Höglund
728e3ed6f6 Use the texture matrix to do the screen to texture coordinate transformations. 
svn path=/trunk/KDE/kdebase/workspace/; revision=1101728
 2010-03-10 18:31:59 +00:00
Fredrik Höglund
67e0e91168 Check some HW limits and make sure we don't exceed them. 
svn path=/trunk/KDE/kdebase/workspace/; revision=1101724
 2010-03-10 18:16:18 +00:00
Fredrik Höglund
3de8c53f21 Refactor the blur shader code a bit, and add a GLSL version. 
svn path=/trunk/KDE/kdebase/workspace/; revision=1100848
 2010-03-08 20:45:58 +00:00
Fredrik Höglund
53391ba944 Initial commit of the blur effect rewrite. 
svn path=/trunk/KDE/kdebase/workspace/; revision=1099619
 2010-03-05 20:42:10 +00:00