private fun generateTexture(): Int // ... generate GL_TEXTURE_EXTERNAL_OES texture
// Assuming side-by-side: left half = left eye, right half = right eye vec2 leftCoord = vec2(vTexCoord.x * 0.5, vTexCoord.y); vec2 rightCoord = vec2(vTexCoord.x * 0.5 + 0.5, vTexCoord.y);
// Anaglyph fragment shader – Dubois optimized matrix precision mediump float; uniform sampler2D uTexture; // frame from video varying vec2 vTexCoord; void main() vec4 color = texture2D(uTexture, vTexCoord); anaglyph 3d video player for android
override fun onSurfaceChanged(gl: GL10?, width: Int, height: Int) GLES20.glViewport(0, 0, width, height)
The renderer’s SurfaceTexture feeds frames to the shader. Add a setting in UI: private fun generateTexture(): Int //
gl_FragColor = vec4(r, g, b, 1.0);
fun getSurfaceTexture(): SurfaceTexture = surfaceTexture uniform sampler2D uTexture
vec4 left = texture2D(uTexture, leftCoord); vec4 right = texture2D(uTexture, rightCoord);
| Format | Sampling logic in shader | |------------------|-------------------------------------------------| | Side‑by‑side | leftCoord.x = vTexCoord.x / 2 | | Over‑under | leftCoord.y = vTexCoord.y / 2 | | Full‑frame left/right | Use separate textures if available |
val mediaPlayer = MediaPlayer().apply setDataSource(videoPath) setSurface(Surface(renderer.getSurfaceTexture())) prepare() start()