X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=ycbcr_422interleaved_input.frag;fp=ycbcr_422interleaved_input.frag;h=66762a8c7d685060d75a2feff2e82a7058482aac;hp=0000000000000000000000000000000000000000;hb=ba60914d4e5eda7b28af700bf43e9699b7aa720d;hpb=5155a601695e522bb0ce23c9b67bfda37ebf918a

diff --git a/ycbcr_422interleaved_input.frag b/ycbcr_422interleaved_input.frag
new file mode 100644
index 0000000..66762a8
--- /dev/null
+++ b/ycbcr_422interleaved_input.frag
@@ -0,0 +1,32 @@
+uniform sampler2D PREFIX(tex_y);
+uniform sampler2D PREFIX(tex_cbcr);
+
+vec4 FUNCNAME(vec2 tc) {
+	// OpenGL's origin is bottom-left, but most graphics software assumes
+	// a top-left origin. Thus, for inputs that come from the user,
+	// we flip the y coordinate.
+	tc.y = 1.0 - tc.y;
+
+	vec3 ycbcr;
+	ycbcr.x = tex2D(PREFIX(tex_y), tc).y;
+#if CB_CR_OFFSETS_EQUAL
+	vec2 tc_cbcr = tc;
+	tc_cbcr.x += PREFIX(cb_offset_x);
+	ycbcr.yz = tex2D(PREFIX(tex_cbcr), tc_cbcr).xz;
+#else
+	vec2 tc_cb = tc;
+	tc_cb.x += PREFIX(cb_offset_x);
+	ycbcr.y = tex2D(PREFIX(tex_cbcr), tc_cb).x;
+
+	vec2 tc_cr = tc;
+	tc_cr.x += PREFIX(cr_offset_x);
+	ycbcr.z = tex2D(PREFIX(tex_cbcr), tc_cr).z;
+#endif
+
+	ycbcr -= PREFIX(offset);
+
+	vec4 rgba;
+	rgba.rgb = PREFIX(inv_ycbcr_matrix) * ycbcr;
+	rgba.a = 1.0;
+	return rgba;
+}