Files
panopainter/data/shaders/texture-alpha.glsl

31 lines
461 B
GLSL

[[vertex]]
uniform mat4 mvp;
in vec4 pos;
in vec2 uvs;
out vec2 uv;
void main()
{
uv = uvs;
gl_Position = mvp * vec4(pos.xyz, 1.0);
}
[[fragment]]
uniform sampler2D tex;
uniform highp float alpha;
uniform bool highlight;
in highp vec2 uv;
out highp vec4 frag;
void main()
{
highp vec4 c = texture(tex, uv);
frag = highlight ?
vec4(clamp(vec3(0.3) + c.rgb, vec3(0.0), vec3(1.0)), c.a) :
c * vec4(1.0, 1.0, 1.0, alpha);
}