diff options
| author | Michael Pavone <pavone@retrodev.com> | 2020-05-09 21:15:33 -0700 |
|---|---|---|
| committer | Michael Pavone <pavone@retrodev.com> | 2020-05-09 21:15:33 -0700 |
| commit | 906de963739ee87c9b63c7d2be7732caab1ae69a (patch) | |
| tree | 4f36b9eb104d552c90e280c83c075c61cea51f6e /shaders/sharp.f.glsl | |
| parent | 758a2d754ec7d13eddb86010280569c46b5e9d38 (diff) | |
Allow use of NPOT textures as a config option. Useful for some mobile GPUs
Diffstat (limited to 'shaders/sharp.f.glsl')
| -rw-r--r-- | shaders/sharp.f.glsl | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/shaders/sharp.f.glsl b/shaders/sharp.f.glsl index 623e1a5..dbd934b 100644 --- a/shaders/sharp.f.glsl +++ b/shaders/sharp.f.glsl @@ -1,20 +1,18 @@ uniform sampler2D textures[2]; +uniform mediump vec2 texsize; varying mediump vec2 texcoord; void main() { - mediump float x0 = (floor(texcoord.x * 512.0 - 0.25) + 0.5)/512.0; - mediump float x1 = (floor(texcoord.x * 512.0 + 0.25) + 0.5)/512.0; - mediump float y0 = (floor(texcoord.y * 512.0 + 0.25) + 0.5)/512.0; - mediump float y1 = (floor(texcoord.y * 512.0 - 0.25) + 0.5)/512.0; + mediump float x0 = (floor(texcoord.x * texsize.x - 0.25) + 0.5)/texsize.x; + mediump float x1 = (floor(texcoord.x * texsize.x + 0.25) + 0.5)/texsize.x; + mediump float y0 = (floor(texcoord.y * texsize.y + 0.25) + 0.5)/texsize.y; + mediump float y1 = (floor(texcoord.y * texsize.y - 0.25) + 0.5)/texsize.y; - - mediump vec2 modifiedCoord0 = vec2(texcoord.x, (floor(texcoord.y * 512.0 + 0.25) + 0.5)/512.0); - mediump vec2 modifiedCoord1 = vec2(texcoord.x, (floor(texcoord.y * 512.0 - 0.25) + 0.5)/512.0); - mediump float ymix = (sin(texcoord.y * 1024.0 * 3.14159265359) + 1.0) * 0.5; - mediump float xmix = (sin(texcoord.x * 1024.0 * 3.14159265359) + 1.0) * 0.5; + mediump float ymix = (sin(texcoord.y * texsize.y * 6.283185307) + 1.0) * 0.5; + mediump float xmix = (sin(texcoord.x * texsize.x * 6.283185307) + 1.0) * 0.5; gl_FragColor = mix( mix( texture2D(textures[1], vec2(x0, y1)), |