aboutsummaryrefslogtreecommitdiffhomepage
path: root/src/effects/SkPerlinNoiseShader.cpp
Commit message (Collapse)AuthorAge
* Removing highp variables from perlin noise shaderGravatar commit-bot@chromium.org2013-07-04
| | | | | | | | | | | | | | | | | | Variables using highp on the Adreno320 (A.K.A. Nexus 4) seem to be causing issues. I modified the shader so that all variables stay in a lower range, no longer requiring the "highp" qualifier. This may improve performance on other devices, like the xoom, where the "highp" qualifier was required. In Blink, these layout tests may require rebaselining : ./css3/filters/effect-reference-hw.html ./css3/filters/effect-reference-zoom-hw.html BUG=https://code.google.com/p/skia/issues/detail?id=1376 R=senorblanco@google.com, sugoi@google.com Author: sugoi@chromium.org Review URL: https://chromiumcodereview.appspot.com/18454004 git-svn-id: http://skia.googlecode.com/svn/trunk@9903 2bbb7eff-a529-9590-31e7-b0007b416f81
* *** Perlin noise GM needs to be rebaselined ***Gravatar commit-bot@chromium.org2013-06-17
| | | | | | | | | | | | | | | | | | | | | | | Enabling Perlin Noise on Android I enabled the Perlin Noise shader on Android after doing some minor modifications to the shader, specifically for Android (and #ifdefed for Android, to make sure none of this affects other platforms). For Tegra devices (Nexus 7, Xoom), a precision issue related to the color values read from textures caused the noise to read the wrong indices and produce bad noise. I fixed this by adding a founding of the values read by simply doing the equivalent of "colorValue = floor(colorValue * 255.0) / 255.0" to make sure we retrieve the colors that were written in the texture originally. For non-Tegra devices (Nexus 10), dealing with values in the order of 4096.0 was problematic without using the "highp" precision setting. To solve this, a few variables were given the high precision setting. Since both fixes don't seem to do considerable harm to the platforms that are not being targetted, I left both fixes on all android devices for now. I also reduced the Perlin noise gm so that it takes less time to test it on the Xoom (Original time was about 20 seconds, this shold take less than 10, hopefully) BUG= R=senorblanco@google.com, bsalomon@google.com, sugoi@google.com, senorblanco@chromium.org Author: sugoi@chromium.org Review URL: https://chromiumcodereview.appspot.com/16818013 git-svn-id: http://skia.googlecode.com/svn/trunk@9637 2bbb7eff-a529-9590-31e7-b0007b416f81
* Fixed gpu perlin noise on WindowsGravatar sugoi@google.com2013-06-10
| | | | | | | | | | I just cleaned up and re-ordered some instructions to reduce the number of registers used under the register limit. Instead of looping over channels, the function now only loops over octaves and computes all 4 channels separately within each octave loop. I made a noise function to make it simpler to make the changes and I fixed the code's alignment so that it's more readable. R=bsalomon@google.com, senorblanco@chromium.org Review URL: https://codereview.chromium.org/15753005 git-svn-id: http://skia.googlecode.com/svn/trunk@9486 2bbb7eff-a529-9590-31e7-b0007b416f81
* Disabling GPU noise on Windows since Angle can't do a proper translation of ↵Gravatar sugoi@google.com2013-04-18
| | | | | | this shader to HLSL. git-svn-id: http://skia.googlecode.com/svn/trunk@8738 2bbb7eff-a529-9590-31e7-b0007b416f81
* Reducing the complexity of the noise test for AngleGravatar sugoi@google.com2013-04-17
| | | | git-svn-id: http://skia.googlecode.com/svn/trunk@8725 2bbb7eff-a529-9590-31e7-b0007b416f81
* Fixing debug bench assert on AndroidGravatar sugoi@google.com2013-04-17
| | | | git-svn-id: http://skia.googlecode.com/svn/trunk@8724 2bbb7eff-a529-9590-31e7-b0007b416f81
* Perlin noise adjustmentsGravatar sugoi@google.com2013-04-17
| | | | | | | | | | | 1 ) Added GPU simplex noise as a comparison to GPU Perlin noise. It can be enabled simply by using a #define (SK_USE_SIMPLEX_NOISE) 2 ) Enabled GPU Perlin noise tests 3 ) Added a small benchmark for noise 4 ) Disabled GPU Perlin noise on Android based on benchmarks Review URL: https://codereview.chromium.org/14087002 git-svn-id: http://skia.googlecode.com/svn/trunk@8719 2bbb7eff-a529-9590-31e7-b0007b416f81
* Sanitizing source files in Skia_Periodic_House_KeepingGravatar skia.committer@gmail.com2013-04-06
| | | | git-svn-id: http://skia.googlecode.com/svn/trunk@8548 2bbb7eff-a529-9590-31e7-b0007b416f81
* Unreviewed test fixGravatar sugoi@google.com2013-04-05
| | | | | | Just commenting out the test for now, will investigate... git-svn-id: http://skia.googlecode.com/svn/trunk@8544 2bbb7eff-a529-9590-31e7-b0007b416f81
* New SVG turbulence in SkiaGravatar sugoi@google.com2013-04-05
| | | | | | | | | This cl contains the code for CPU generation of noise. TEST:Added 'perlinnoise' gm Review URL: https://codereview.chromium.org/13094003 git-svn-id: http://skia.googlecode.com/svn/trunk@8541 2bbb7eff-a529-9590-31e7-b0007b416f81
* Reverting r8376, r8373 and r8371 due to Android shader compilation failuresGravatar robertphillips@google.com2013-03-25
| | | | git-svn-id: http://skia.googlecode.com/svn/trunk@8378 2bbb7eff-a529-9590-31e7-b0007b416f81
* Unreviewed build fixGravatar sugoi@google.com2013-03-25
| | | | git-svn-id: http://skia.googlecode.com/svn/trunk@8373 2bbb7eff-a529-9590-31e7-b0007b416f81
* New SVG turbulence in SkiaGravatar sugoi@google.com2013-03-25
| | | | | | | | | | This cl contains the code for both CPU and GPU generation of noise. Both codepaths yield equivalent results. TEST:Added 'perlinnoise' gm Review URL: https://codereview.chromium.org/13047005 git-svn-id: http://skia.googlecode.com/svn/trunk@8371 2bbb7eff-a529-9590-31e7-b0007b416f81
* Reverting 8313 (SVG turbulence) due to Ubuntu failuresGravatar robertphillips@google.com2013-03-21
| | | | git-svn-id: http://skia.googlecode.com/svn/trunk@8316 2bbb7eff-a529-9590-31e7-b0007b416f81
* New SVG turbulence in SkiaGravatar sugoi@google.com2013-03-21
This cl contains the code for both CPU and GPU generation of noise. Both codepaths yield equivalent results. TEST:Added 'perlinnoise' gm Review URL: https://codereview.appspot.com/7322060 git-svn-id: http://skia.googlecode.com/svn/trunk@8313 2bbb7eff-a529-9590-31e7-b0007b416f81
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 10:49:04 +0000