diff --git a/Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp b/Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp
index 79826860a7..954755cb95 100644
--- a/Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp
+++ b/Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp
@@ -452,12 +452,6 @@ void ProgramShaderCache::CreateHeader ( void )
 		// Precision defines for GLSLES3
 		"%s\n"
 
-		"\n"// A few required defines and ones that will make our lives a lot easier
-		"#define ATTRIN in\n"
-		"#define ATTROUT out\n"
-		"#define VARYIN %s\n"
-		"#define VARYOUT %s\n"
-
 		// Silly differences
 		"#define float2 vec2\n"
 		"#define float3 vec3\n"
@@ -472,6 +466,7 @@ void ProgramShaderCache::CreateHeader ( void )
 
 		// Terrible hack, look at DriverDetails.h
 		"%s\n"
+		"%s\n"
 
 		, v==GLSLES3 ? "#version 300 es" : v==GLSL_130 ? "#version 130" : v==GLSL_140 ? "#version 140" : "#version 150"
 		, v<GLSL_140 ? "#extension GL_ARB_uniform_buffer_object : enable" : ""
@@ -480,9 +475,8 @@ void ProgramShaderCache::CreateHeader ( void )
 
 		, v==GLSLES3 ? "precision highp float;" : ""
 
-		, DriverDetails::HasBug(DriverDetails::BUG_BROKENCENTROID) ? "in" : "centroid in"
-		, DriverDetails::HasBug(DriverDetails::BUG_BROKENCENTROID) ? "out" : "centroid out"
 		, DriverDetails::HasBug(DriverDetails::BUG_BROKENTEXTURESIZE) ? "#define textureSize(x, y) ivec2(1, 1)" : ""
+		, DriverDetails::HasBug(DriverDetails::BUG_BROKENCENTROID) ? "#define centroid" : ""
 	);
 }
 
diff --git a/Source/Core/VideoBackends/OGL/RasterFont.cpp b/Source/Core/VideoBackends/OGL/RasterFont.cpp
index e5458ee455..1f2eefdb8b 100644
--- a/Source/Core/VideoBackends/OGL/RasterFont.cpp
+++ b/Source/Core/VideoBackends/OGL/RasterFont.cpp
@@ -115,9 +115,9 @@ const u8 rasters[char_count][char_height] = {
 
 static const char *s_vertexShaderSrc =
 	"uniform vec2 charSize;\n"
-	"ATTRIN vec2 rawpos;\n"
-	"ATTRIN vec2 tex0;\n"
-	"VARYOUT vec2 uv0;\n"
+	"in vec2 rawpos;\n"
+	"in vec2 tex0;\n"
+	"out vec2 uv0;\n"
 	"void main(void) {\n"
 	"	gl_Position = vec4(rawpos,0,1);\n"
 	"	uv0 = tex0 * charSize;\n"
@@ -126,7 +126,7 @@ static const char *s_vertexShaderSrc =
 static const char *s_fragmentShaderSrc =
 	"uniform sampler2D samp8;\n"
 	"uniform vec4 color;\n"
-	"VARYIN vec2 uv0;\n"
+	"in vec2 uv0;\n"
 	"out vec4 ocol0;\n"
 	"void main(void) {\n"
 	"	ocol0 = texture(samp8,uv0) * color;\n"
diff --git a/Source/Core/VideoBackends/OGL/Render.cpp b/Source/Core/VideoBackends/OGL/Render.cpp
index 433b71847a..b4530a0bdb 100644
--- a/Source/Core/VideoBackends/OGL/Render.cpp
+++ b/Source/Core/VideoBackends/OGL/Render.cpp
@@ -652,14 +652,14 @@ void Renderer::Init()
 	s_pfont = new RasterFont();
 
 	ProgramShaderCache::CompileShader(s_ShowEFBCopyRegions,
-		"ATTRIN vec2 rawpos;\n"
-		"ATTRIN vec3 color0;\n"
-		"VARYOUT vec4 c;\n"
+		"in vec2 rawpos;\n"
+		"in vec3 color0;\n"
+		"out vec4 c;\n"
 		"void main(void) {\n"
 		"	gl_Position = vec4(rawpos, 0.0, 1.0);\n"
 		"	c = vec4(color0, 1.0);\n"
 		"}\n",
-		"VARYIN vec4 c;\n"
+		"in vec4 c;\n"
 		"out vec4 ocol0;\n"
 		"void main(void) {\n"
 		"	ocol0 = c;\n"
diff --git a/Source/Core/VideoBackends/OGL/TextureCache.cpp b/Source/Core/VideoBackends/OGL/TextureCache.cpp
index 29a2a13a27..37d96b88e7 100644
--- a/Source/Core/VideoBackends/OGL/TextureCache.cpp
+++ b/Source/Core/VideoBackends/OGL/TextureCache.cpp
@@ -346,7 +346,7 @@ TextureCache::TextureCache()
 	const char *pColorMatrixProg =
 		"uniform sampler2D samp9;\n"
 		"uniform vec4 colmat[7];\n"
-		"VARYIN vec2 uv0;\n"
+		"in vec2 uv0;\n"
 		"out vec4 ocol0;\n"
 		"\n"
 		"void main(){\n"
@@ -358,7 +358,7 @@ TextureCache::TextureCache()
 	const char *pDepthMatrixProg =
 		"uniform sampler2D samp9;\n"
 		"uniform vec4 colmat[5];\n"
-		"VARYIN vec2 uv0;\n"
+		"in vec2 uv0;\n"
 		"out vec4 ocol0;\n"
 		"\n"
 		"void main(){\n"
@@ -369,7 +369,7 @@ TextureCache::TextureCache()
 		"}\n";
 
 	const char *VProgram =
-		"VARYOUT vec2 uv0;\n"
+		"out vec2 uv0;\n"
 		"uniform sampler2D samp9;\n"
 		"uniform vec4 copy_position;\n" // left, top, right, bottom
 		"void main()\n"
diff --git a/Source/Core/VideoBackends/OGL/TextureConverter.cpp b/Source/Core/VideoBackends/OGL/TextureConverter.cpp
index dbbb605f6b..514dbd22f6 100644
--- a/Source/Core/VideoBackends/OGL/TextureConverter.cpp
+++ b/Source/Core/VideoBackends/OGL/TextureConverter.cpp
@@ -68,7 +68,7 @@ void CreatePrograms()
 	 */
 	// Output is BGRA because that is slightly faster than RGBA.
 	const char *VProgramRgbToYuyv =
-		"VARYOUT vec2 uv0;\n"
+		"out vec2 uv0;\n"
 		"uniform vec4 copy_position;\n" // left, top, right, bottom
 		"uniform sampler2D samp9;\n"
 		"void main()\n"
@@ -79,7 +79,7 @@ void CreatePrograms()
 		"}\n";
 	const char *FProgramRgbToYuyv =
 		"uniform sampler2D samp9;\n"
-		"VARYIN vec2 uv0;\n"
+		"in vec2 uv0;\n"
 		"out vec4 ocol0;\n"
 		"void main()\n"
 		"{\n"
@@ -110,7 +110,7 @@ void CreatePrograms()
 		"}\n";
 	const char *FProgramYuyvToRgb =
 		"uniform sampler2D samp9;\n"
-		"VARYIN vec2 uv0;\n"
+		"in vec2 uv0;\n"
 		"out vec4 ocol0;\n"
 		"void main()\n"
 		"{\n"
diff --git a/Source/Core/VideoCommon/PixelShaderGen.cpp b/Source/Core/VideoCommon/PixelShaderGen.cpp
index 66965139b8..e51294e55c 100644
--- a/Source/Core/VideoCommon/PixelShaderGen.cpp
+++ b/Source/Core/VideoCommon/PixelShaderGen.cpp
@@ -311,19 +311,19 @@ static inline void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_T
 		if (per_pixel_depth)
 			out.Write("#define depth gl_FragDepth\n");
 
-		out.Write("VARYIN float4 colors_02;\n");
-		out.Write("VARYIN float4 colors_12;\n");
+		out.Write("centroid in float4 colors_02;\n");
+		out.Write("centroid in float4 colors_12;\n");
 
 		// compute window position if needed because binding semantic WPOS is not widely supported
 		// Let's set up attributes
 		for (unsigned int i = 0; i < xfregs.numTexGen.numTexGens; ++i)
 		{
-			out.Write("VARYIN float3 uv%d_2;\n", i);
+			out.Write("centroid in float3 uv%d_2;\n", i);
 		}
-		out.Write("VARYIN float4 clipPos_2;\n");
+		out.Write("centroid in float4 clipPos_2;\n");
 		if (g_ActiveConfig.bEnablePixelLighting && g_ActiveConfig.backend_info.bSupportsPixelLighting)
 		{
-			out.Write("VARYIN float4 Normal_2;\n");
+			out.Write("centroid in float4 Normal_2;\n");
 		}
 
 		if (forced_early_z)
diff --git a/Source/Core/VideoCommon/VertexShaderGen.cpp b/Source/Core/VideoCommon/VertexShaderGen.cpp
index 67cb4c1231..3e2e02eecd 100644
--- a/Source/Core/VideoCommon/VertexShaderGen.cpp
+++ b/Source/Core/VideoCommon/VertexShaderGen.cpp
@@ -106,26 +106,26 @@ static inline void GenerateVertexShader(T& out, u32 components, API_TYPE api_typ
 
 	if(api_type == API_OPENGL)
 	{
-		out.Write("ATTRIN float4 rawpos; // ATTR%d,\n", SHADER_POSITION_ATTRIB);
+		out.Write("in float4 rawpos; // ATTR%d,\n", SHADER_POSITION_ATTRIB);
 		if (components & VB_HAS_POSMTXIDX)
-			out.Write("ATTRIN float fposmtx; // ATTR%d,\n", SHADER_POSMTX_ATTRIB);
+			out.Write("in float fposmtx; // ATTR%d,\n", SHADER_POSMTX_ATTRIB);
 		if (components & VB_HAS_NRM0)
-			out.Write("ATTRIN float3 rawnorm0; // ATTR%d,\n", SHADER_NORM0_ATTRIB);
+			out.Write("in float3 rawnorm0; // ATTR%d,\n", SHADER_NORM0_ATTRIB);
 		if (components & VB_HAS_NRM1)
-			out.Write("ATTRIN float3 rawnorm1; // ATTR%d,\n", SHADER_NORM1_ATTRIB);
+			out.Write("in float3 rawnorm1; // ATTR%d,\n", SHADER_NORM1_ATTRIB);
 		if (components & VB_HAS_NRM2)
-			out.Write("ATTRIN float3 rawnorm2; // ATTR%d,\n", SHADER_NORM2_ATTRIB);
+			out.Write("in float3 rawnorm2; // ATTR%d,\n", SHADER_NORM2_ATTRIB);
 
 		if (components & VB_HAS_COL0)
-			out.Write("ATTRIN float4 color0; // ATTR%d,\n", SHADER_COLOR0_ATTRIB);
+			out.Write("in float4 color0; // ATTR%d,\n", SHADER_COLOR0_ATTRIB);
 		if (components & VB_HAS_COL1)
-			out.Write("ATTRIN float4 color1; // ATTR%d,\n", SHADER_COLOR1_ATTRIB);
+			out.Write("in float4 color1; // ATTR%d,\n", SHADER_COLOR1_ATTRIB);
 
 		for (int i = 0; i < 8; ++i)
 		{
 			u32 hastexmtx = (components & (VB_HAS_TEXMTXIDX0<<i));
 			if ((components & (VB_HAS_UV0<<i)) || hastexmtx)
-				out.Write("ATTRIN float%d tex%d; // ATTR%d,\n", hastexmtx ? 3 : 2, i, SHADER_TEXTURE0_ATTRIB + i);
+				out.Write("in float%d tex%d; // ATTR%d,\n", hastexmtx ? 3 : 2, i, SHADER_TEXTURE0_ATTRIB + i);
 		}
 
 		// Let's set up attributes
@@ -133,15 +133,15 @@ static inline void GenerateVertexShader(T& out, u32 components, API_TYPE api_typ
 		{
 			if (i < xfregs.numTexGen.numTexGens)
 			{
-				out.Write("VARYOUT  float3 uv%d_2;\n", i);
+				out.Write("centroid out  float3 uv%d_2;\n", i);
 			}
 		}
-		out.Write("VARYOUT   float4 clipPos_2;\n");
+		out.Write("centroid out   float4 clipPos_2;\n");
 		if (g_ActiveConfig.bEnablePixelLighting && g_ActiveConfig.backend_info.bSupportsPixelLighting)
-			out.Write("VARYOUT   float4 Normal_2;\n");
+			out.Write("centroid out   float4 Normal_2;\n");
 
-		out.Write("VARYOUT   float4 colors_02;\n");
-		out.Write("VARYOUT   float4 colors_12;\n");
+		out.Write("centroid out   float4 colors_02;\n");
+		out.Write("centroid out   float4 colors_12;\n");
 
 		out.Write("void main()\n{\n");
 	}