eglGetError
precision mediump float;// Pass in the entire texture here.// E.g. a 256x256 video frame will actually be://// 256// +--------+// 256 | Y |// +--------+// + VU..VU |// 128 | VU..VU |// +--------+// // 256x384.uniform sampler2D u_s2dNV12;varying vec2 v_v2TexCoord;// This needs to be set from the application code.// E.g. for a 256 wide texture, it will be 1/256 = 0.00390625.uniform float u_fInverseWidth;void main(){ // Calculate the texture coord for the Y sample. vec2 v2YTexCoord; v2YTexCoord.s = v_v2TexCoord.s; v2YTexCoord.t = v_v2TexCoord.t * 2.0 / 3.0; // Sample the NV12 texture to read the Y component. float fY = texture2D(u_s2dNV12, v2YTexCoord).r; // Calculate the texture coord for the U sample. vec2 v2UTexCoord; v2UTexCoord.s = floor(v_v2TexCoord.s / 2.0) * 2.0 + u_fInverseWidth; v2UTexCoord.t = v_v2TexCoord.t * 1.0 / 3.0 + 2.0 / 3.0; // Sample the NV12 texture to read the U component. float fU = texture2D(u_s2dNV12, v2UTexCoord).r; // Calculate the texture coord for the V sample. vec2 v2VTexCoord; v2VTexCoord.s = floor(v_v2TexCoord.s / 2.0) * 2.0; v2VTexCoord.t = v_v2TexCoord.t * 1.0 / 3.0 + 2.0 / 3.0; // Sample the NV12 texture to read the V component. float fV = texture2D(u_s2dNV12, v2VTexCoord).r; // TODO: Insert YUV->RGB conversion maths here. gl_FragColor = vec4(fY, fU, fV, 1.0);}