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YV12 YUV转RGB
const char fragmentShader_yuv420p[] = { "precision mediump float;\n" "uniform sampler2D Ytex;\n" "uniform sampler2D Utex,Vtex;\n" "varying vec2 vTextureCoord;\n" "void main(void) {\n" " float nx,YV12 YUV转RGB
const char fragmentShader_yuv420p[] = { "precision mediump float;\n" "uniform sampler2D Ytex;\n" "uniform sampler2D Utex,Vtex;\n" "varying vec2 vTextureCoord;\n" "void main(void) {\n" " float nx,