X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=ycbcr_input.frag;h=c57c6d184441445d57b1d0892f83dfc059383eec;hp=bd6ff766569730287af70152ef58dc679ef9d867;hb=6c954b4f0bff0743e13ce6ddcee8bda15b3af234;hpb=61e2a7671f7b22227dcdc34dd303ae4fcc802aaa

diff --git a/ycbcr_input.frag b/ycbcr_input.frag
index bd6ff76..c57c6d1 100644
--- a/ycbcr_input.frag
+++ b/ycbcr_input.frag
@@ -1,6 +1,8 @@
-uniform sampler2D PREFIX(tex_y);
-uniform sampler2D PREFIX(tex_cb);
-uniform sampler2D PREFIX(tex_cr);
+// Implicit uniforms:
+// uniform sampler2D PREFIX(tex_y);
+// uniform sampler2D PREFIX(tex_cbcr);  // If CB_CR_SAME_TEXTURE.
+// uniform sampler2D PREFIX(tex_cb);    // If not CB_CR_SAME_TEXTURE.
+// uniform sampler2D PREFIX(tex_cr);    // If not CB_CR_SAME_TEXTURE.
 
 vec4 FUNCNAME(vec2 tc) {
 	// OpenGL's origin is bottom-left, but most graphics software assumes
@@ -10,8 +12,17 @@ vec4 FUNCNAME(vec2 tc) {
 
 	vec3 ycbcr;
 	ycbcr.x = tex2D(PREFIX(tex_y), tc).x;
+#if CB_CR_SAME_TEXTURE
+#if CB_CR_OFFSETS_EQUAL
+	ycbcr.yz = tex2D(PREFIX(tex_cbcr), tc + PREFIX(cb_offset)).xy;
+#else
+	ycbcr.y = tex2D(PREFIX(tex_cbcr), tc + PREFIX(cb_offset)).x;
+	ycbcr.z = tex2D(PREFIX(tex_cbcr), tc + PREFIX(cr_offset)).x;
+#endif
+#else
 	ycbcr.y = tex2D(PREFIX(tex_cb), tc + PREFIX(cb_offset)).x;
 	ycbcr.z = tex2D(PREFIX(tex_cr), tc + PREFIX(cr_offset)).x;
+#endif
 
 	ycbcr -= PREFIX(offset);