diff --git a/plugins/GSdx/GSRendererOGL.cpp b/plugins/GSdx/GSRendererOGL.cpp
index e0f55d2200..26fa6a8fe4 100644
--- a/plugins/GSdx/GSRendererOGL.cpp
+++ b/plugins/GSdx/GSRendererOGL.cpp
@@ -673,7 +673,12 @@ void GSRendererOGL::DrawPrims(GSTexture* rt, GSTexture* ds, GSTextureCache::Sour
 	//
 	// First let's check we really have a channel shuffle effect
 	if (m_channel_shuffle) {
-		if (m_context->CLAMP.WMS == 3 && ((m_context->CLAMP.MAXU & 0x8) == 8)) {
+		if (m_game.title == CRC::GT4 || m_game.title == CRC::GT3 || m_game.title == CRC::GTConcept) {
+			GL_INS("Gran Turismo RGB Channel");
+			ps_sel.channel = 7;
+			m_context->TEX0.TFX = TFX_DECAL;
+			rt = tex->m_from_target;
+		} else if (m_context->CLAMP.WMS == 3 && ((m_context->CLAMP.MAXU & 0x8) == 8)) {
 			// Read either blue or Alpha. Let's go for Blue ;)
 			// MGS3/Kill Zone
 			GL_INS("Blue channel");
diff --git a/plugins/GSdx/res/glsl/tfx_fs.glsl b/plugins/GSdx/res/glsl/tfx_fs.glsl
index c6bb84933c..b3d211a2d1 100644
--- a/plugins/GSdx/res/glsl/tfx_fs.glsl
+++ b/plugins/GSdx/res/glsl/tfx_fs.glsl
@@ -331,6 +331,13 @@ vec4 fetch_alpha()
     return sample_p(rt.a) * 255.0f;
 }
 
+vec4 fetch_rgb()
+{
+    vec4 rt = fetch_raw_color();
+    vec4 c = vec4(sample_p(rt.r).r, sample_p(rt.g).g, sample_p(rt.b).b, 1.0f);
+    return c * 255.0f;
+}
+
 //////////////////////////////////////////////////////////////////////
 
 vec4 sample_color(vec2 st)
@@ -500,6 +507,8 @@ vec4 ps_color()
     vec4 T = fetch_blue();
 #elif PS_CHANNEL_FETCH == 4
     vec4 T = fetch_alpha();
+#elif PS_CHANNEL_FETCH == 7
+    vec4 T = fetch_rgb();
 #elif PS_DEPTH_FMT > 0
     // Integral coordinate
     vec4 T = sample_depth(PSin.t_int.zw);
diff --git a/plugins/GSdx/res/glsl_source.h b/plugins/GSdx/res/glsl_source.h
index 9466f6f2a1..24737cc4b4 100644
--- a/plugins/GSdx/res/glsl_source.h
+++ b/plugins/GSdx/res/glsl_source.h
@@ -1175,6 +1175,13 @@ static const char* const tfx_fs_all_glsl =
 	"    return sample_p(rt.a) * 255.0f;\n"
 	"}\n"
 	"\n"
+	"vec4 fetch_rgb()\n"
+	"{\n"
+	"    vec4 rt = fetch_raw_color();\n"
+	"    vec4 c = vec4(sample_p(rt.r).r, sample_p(rt.g).g, sample_p(rt.b).b, 1.0f);\n"
+	"    return c * 255.0f;\n"
+	"}\n"
+	"\n"
 	"//////////////////////////////////////////////////////////////////////\n"
 	"\n"
 	"vec4 sample_color(vec2 st)\n"
@@ -1344,6 +1351,8 @@ static const char* const tfx_fs_all_glsl =
 	"    vec4 T = fetch_blue();\n"
 	"#elif PS_CHANNEL_FETCH == 4\n"
 	"    vec4 T = fetch_alpha();\n"
+	"#elif PS_CHANNEL_FETCH == 7\n"
+	"    vec4 T = fetch_rgb();\n"
 	"#elif PS_DEPTH_FMT > 0\n"
 	"    // Integral coordinate\n"
 	"    vec4 T = sample_depth(PSin.t_int.zw);\n"