BansheeEngine/Data/Raw/Engine/Shaders/SpriteLine.bsl

Parameters =
{
	mat4x4 	worldTransform;
	float	invViewportWidth;
	float	invViewportHeight;

	color	tint;
};

Technique =
{
	Language = "HLSL11";
	
	Pass =
	{
		Target = 
		{
			Blend = true;
			Color = { SRCA, SRCIA, ADD };
			WriteMask = RGB;
		};
		
		DepthRead = false;
		DepthWrite = false;
		
		Multisample = false; // This controls line rendering algorithm
		AALine = true;
		
		Common = 
		{
			struct VStoFS
			{
				float4 position : SV_POSITION;
			};
		};
		
		Vertex =
		{
			float invViewportWidth;
			float invViewportHeight;
			float4x4 worldTransform;

			struct VertexInput
			{
				float2 position : POSITION;
			};			
			
			VStoFS main(VertexInput input)
			{
				float4 tfrmdPos = mul(worldTransform, float4(input.position, 0, 1));
				
				float tfrmdX = -1.0f + (tfrmdPos.x * invViewportWidth);
				float tfrmdY = 1.0f - (tfrmdPos.y * invViewportHeight);

				VStoFS output;
				output.position = float4(tfrmdX, tfrmdY, 0, 1);

				return output;
			}
		};
		
		Fragment =
		{
			float4 tint;
			
			float4 main(VStoFS input) : SV_Target
			{
				return tint;
			}
		};
	};
};

Technique =
{
	Language = "GLSL";
	
	Pass =
	{
		Target = 
		{
			Blend = true;
			Color = { SRCA, SRCIA, ADD };
			WriteMask = RGB;
		};
		
		DepthRead = false;
		DepthWrite = false;
		
		Vertex =
		{
			layout (binding = 0) uniform VertUBO
			{
				float invViewportWidth;
				float invViewportHeight;
				mat4 worldTransform;
			};
		
			layout (location = 0) in vec2 bs_position;

			out gl_PerVertex
			{
				vec4 gl_Position;
			};			
			
			void main()
			{
				vec4 tfrmdPos = worldTransform * vec4(bs_position, 0, 1);
				
				float tfrmdX = -1.0f + (tfrmdPos.x * invViewportWidth);
				float tfrmdY = 1.0f - (tfrmdPos.y * invViewportHeight);

				gl_Position = vec4(tfrmdX, tfrmdY, 0, 1);
			}
		};
		
		Fragment =
		{
			layout (binding = 1) uniform FragUBO
			{
				vec4 tint;
			};
			
			out vec4 fragColor;

			void main()
			{
				fragColor = tint;
			}
		};
	};
};