Opengl: fix real XFB sample positions

(0,0) and (1,0) aren't accurate xfb sample positions. This fixes the image shift to the left and some blocking on higher IR.
dolphin-emu · Nov 24, 2013 · 994426b · 994426b
1 parent eef2cdd
commit 994426b
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/Source/Core/VideoBackends/OGL/Src/TextureConverter.cpp b/Source/Core/VideoBackends/OGL/Src/TextureConverter.cpp
@@ -69,8 +69,8 @@ void CreatePrograms()
 		"COLOROUT(ocol0)\n"
 		"void main()\n"
 		"{\n"
-		"	vec3 c0 = texture2DRect(samp9, uv0).rgb;\n"
-		"	vec3 c1 = texture2DRect(samp9, uv0 + vec2(1.0, 0.0)).rgb;\n"
+		"	vec3 c0 = texture2DRect(samp9, uv0 - dFdx(uv0) * 0.25).rgb;\n"
+		"	vec3 c1 = texture2DRect(samp9, uv0 + dFdx(uv0) * 0.25).rgb;\n"
 		"	vec3 c01 = (c0 + c1) * 0.5;\n"
 		"	vec3 y_const = vec3(0.257,0.504,0.098);\n"
 		"	vec3 u_const = vec3(-0.148,-0.291,0.439);\n"