diff options
Diffstat (limited to 'src/plasma-node.c')
| -rw-r--r-- | src/plasma-node.c | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/src/plasma-node.c b/src/plasma-node.c index 0ad8752..656aa56 100644 --- a/src/plasma-node.c +++ b/src/plasma-node.c @@ -26,18 +26,26 @@ static const char *plasma_vs = "" +#ifdef __EMSCRIPTEN__ "#version 100\n" + "varying vec2 UV;" +#else + "#version 120\n" +#endif + "uniform mat4 projection_x;" "attribute vec3 vertex;" "attribute vec2 texcoord;" - "varying vec2 UV;" - "void main()" "{" +#ifdef __EMSCRIPTEN__ " UV = texcoord;" +#else + " gl_TexCoord[0].xy = texcoord;" +#endif " gl_Position = projection_x * vec4(vertex, 1.0);" "}" ""; @@ -45,21 +53,31 @@ static const char *plasma_vs = "" // derived from https://www.bidouille.org/prog/plasma static const char *plasma_fs = "" +#ifdef __EMSCRIPTEN__ "#version 100\n" +#else + "#version 120\n" +#endif "#define PI 3.1415926535897932384626433832795\n" +#ifdef __EMSCRIPTEN__ "precision mediump float;" + "varying vec2 UV;" +#endif + "uniform float alpha;" "uniform float time;" - "varying vec2 UV;" - "void main() {" " float v;" " float stime = sin(time * .01) * 100.0;" +#ifdef __EMSCRIPTEN__ " vec2 c = UV;" +#else + " vec2 c = gl_TexCoord[0].st;" +#endif // this zooms the texture coords in and out a bit with time " c *= (sin(stime * .01) *.5 + .5) * 3.0 + 1.0;" |