1 files changed, 22 insertions, 0 deletions
diff --git a/src/qtmultimediaquicktools/shaders/yuyvvideo.frag b/src/qtmultimediaquicktools/shaders/yuyvvideo.frag
new file mode 100644
index 000000000..876771008
--- /dev/null
+++ b/src/qtmultimediaquicktools/shaders/yuyvvideo.frag
@@ -0,0 +1,22 @@
+uniform sampler2D yuvTexture; // YUYV macropixel texture passed as RGBA format
+uniform float imageWidth; // The YUYV texture appears to the shader with 1/2 the image width since we use the RGBA format to pass YUYV
+uniform mediump mat4 colorMatrix;
+uniform lowp float opacity;
+
+varying highp vec2 qt_TexCoord;
+
+void main()
+{
+   // For Y0 U0 Y1 V0  macropixel, lookup Y0 or Y1 based on whether
+   // the original texture x coord is even or odd.
+   mediump float Y;
+   if (fract(floor(qt_TexCoord.x * imageWidth + 0.5) / 2.0) > 0.0)
+       Y = texture2D(yuvTexture, qt_TexCoord).b;       // odd so choose Y1
+   else
+       Y = texture2D(yuvTexture, qt_TexCoord).r;       // even so choose Y0
+   mediump float Cb = texture2D(yuvTexture, qt_TexCoord).g;
+   mediump float Cr = texture2D(yuvTexture, qt_TexCoord).a;
+
+   mediump vec4 color = vec4(Y, Cb, Cr, 1.0);
+   gl_FragColor = colorMatrix * color * opacity;
+}