#ifndef OVR_SHADER
#define OVR_SHADER

// Vertex Shader
static const char* vertexShader =
"#version 110\n"

"uniform vec2 EyeToSourceUVScale;\n"
"uniform vec2 EyeToSourceUVOffset;\n"

"attribute vec4 Position;\n"
//"attribute vec4 Color;\n"
// Vignette Fade and TimeWarpFactor encoded into Pos.z and Pos.w
"attribute vec2 TexCoord0;\n"
"attribute vec2 TexCoord1;\n"
"attribute vec2 TexCoord2;\n"

"varying vec4 oColor; \n"
"varying vec2 oTexCoord0;\n"
"varying vec2 oTexCoord1;\n"
"varying vec2 oTexCoord2;\n"

"void main() {\n"

"	gl_Position.x = Position.x;\n"
"	gl_Position.y = Position.y;\n"
"	gl_Position.z = 0.5;\n"
"	gl_Position.w = 1.0;\n"

	// Vertex inputs are in TanEyeAngle space for the R,G,B channels
	// (i.e. after chromatic aberration and distortion).
	// Scale them into the correct [0-1],[0-1] UV lookup space (depending on eye)
	"   oTexCoord0 = TexCoord0 * EyeToSourceUVScale + EyeToSourceUVOffset;\n"
	"   oTexCoord0.y = 1.0-oTexCoord0.y;\n"
	"   oTexCoord1 = TexCoord1 * EyeToSourceUVScale + EyeToSourceUVOffset;\n"
	"   oTexCoord1.y = 1.0-oTexCoord1.y;\n"
	"   oTexCoord2 = TexCoord2 * EyeToSourceUVScale + EyeToSourceUVOffset;\n"
	"   oTexCoord2.y = 1.0-oTexCoord2.y;\n"

"	oColor = vec4(Position.w, Position.w, Position.w, Position.z);\n"	// Used for VignetteFade.
"}\n";

// Fragment Shader
static const char* fragmentShader =
"#version 110 \n"

"uniform sampler2D Texture;\n"

"varying vec4 oColor;\n"
"varying vec2 oTexCoord0;\n"
"varying vec2 oTexCoord1;\n"
"varying vec2 oTexCoord2;\n"

"void main() {\n"

//"gl_FragColor = oColor * texture2D(Texture, oTexCoord1);\n"
"	gl_FragColor.r = oColor.r * texture2D(Texture, oTexCoord0).r;\n"
"	gl_FragColor.g = oColor.g * texture2D(Texture, oTexCoord1).g;\n"
"	gl_FragColor.b = oColor.b * texture2D(Texture, oTexCoord2).b;\n"
"	gl_FragColor.a = 1.0;\n"
"}\n";

#endif /* OVR_SHADER */