osu-lazer/osu.Game.Tests/Resources/Shaders/sh_TestVertex.vs

layout(location = 0) in highp vec2 m_Position;
layout(location = 1) in lowp vec4 m_Colour;
layout(location = 2) in highp vec2 m_TexCoord;
layout(location = 3) in highp vec4 m_TexRect;
layout(location = 4) in mediump vec2 m_BlendRange;

layout(location = 0) out highp vec2 v_MaskingPosition;
layout(location = 1) out lowp vec4 v_Colour;
layout(location = 2) out highp vec2 v_TexCoord;
layout(location = 3) out highp vec4 v_TexRect;
layout(location = 4) out mediump vec2 v_BlendRange;

void main(void)
{
	// Transform from screen space to masking space.
	highp vec3 maskingPos = g_ToMaskingSpace * vec3(m_Position, 1.0);
	v_MaskingPosition = maskingPos.xy / maskingPos.z;

	v_Colour = m_Colour;
	v_TexCoord = m_TexCoord;
	v_TexRect = m_TexRect;
	v_BlendRange = m_BlendRange;

	gl_Position = g_ProjMatrix * vec4(m_Position, 1.0, 1.0);
}