1 files changed, 127 insertions, 0 deletions
diff --git a/demo/d3d11/shaders/ellipsoidDepthGS.hlsl b/demo/d3d11/shaders/ellipsoidDepthGS.hlsl
new file mode 100644
index 0000000..8c892e4
--- /dev/null
+++ b/demo/d3d11/shaders/ellipsoidDepthGS.hlsl
@@ -0,0 +1,127 @@
+#include "shaderCommon.h"
+
+cbuffer constBuf : register(b0)
+{
+	FluidShaderConst gParams;
+};
+
+static const float2 corners[4] =
+{
+	float2(0.0, 1.0), float2(0.0, 0.0), float2(1.0, 1.0), float2(1.0, 0.0)
+};
+
+[maxvertexcount(4)]
+void ellipsoidDepthGS(point FluidVertexOut input[1], inout TriangleStream<FluidGeoOut> triStream)
+{
+	float4 gl_Position;
+	float4 gl_TexCoord[6];
+
+	float4 gl_PositionIn[1];
+	float4 gl_TexCoordIn[1][6];
+
+	gl_PositionIn[0]  = input[0].position;
+	{
+		[unroll]
+		for (int i = 0; i < 6; i++)
+			gl_TexCoordIn[0][i] = input[0].texCoord[i];
+	}
+
+	float3 pos = gl_PositionIn[0].xyz;
+	float4 bounds = gl_TexCoordIn[0][0];
+	float4 ndcPos = gl_TexCoordIn[0][5];
+
+	if (ndcPos.w < 0.0)
+		return;
+
+	// frustrum culling
+	const float ndcBound = 1.0;
+	if (ndcPos.x < -ndcBound) return;
+	if (ndcPos.x > ndcBound) return;
+	if (ndcPos.y < -ndcBound) return;
+	if (ndcPos.y > ndcBound) return;
+
+	float xmin = bounds.x;
+	float xmax = bounds.y;
+	float ymin = bounds.z;
+	float ymax = bounds.w;
+
+
+	// inv quadric transform
+	gl_TexCoord[0] = gl_TexCoordIn[0][1];
+	gl_TexCoord[1] = gl_TexCoordIn[0][2];
+	gl_TexCoord[2] = gl_TexCoordIn[0][3];
+	gl_TexCoord[3] = gl_TexCoordIn[0][4];
+
+	FluidGeoOut output;
+
+	gl_Position = float4(xmin, ymax, 0.5, 1.0);
+	output.position = gl_Position;
+	output.texCoord[0] = gl_TexCoord[0];
+	output.texCoord[1] = gl_TexCoord[1];
+	output.texCoord[2] = gl_TexCoord[2];
+	output.texCoord[3] = gl_TexCoord[3];
+	triStream.Append(output);
+
+	gl_Position = float4(xmin, ymin, 0.5, 1.0);
+	output.position = gl_Position;
+	output.texCoord[0] = gl_TexCoord[0];
+	output.texCoord[1] = gl_TexCoord[1];
+	output.texCoord[2] = gl_TexCoord[2];
+	output.texCoord[3] = gl_TexCoord[3];
+	triStream.Append(output);
+
+	gl_Position = float4(xmax, ymax, 0.5, 1.0);
+	output.position = gl_Position;
+	output.texCoord[0] = gl_TexCoord[0];
+	output.texCoord[1] = gl_TexCoord[1];
+	output.texCoord[2] = gl_TexCoord[2];
+	output.texCoord[3] = gl_TexCoord[3];
+	triStream.Append(output);
+
+	gl_Position = float4(xmax, ymin, 0.5, 1.0);
+	output.position = gl_Position;
+	output.texCoord[0] = gl_TexCoord[0];
+	output.texCoord[1] = gl_TexCoord[1];
+	output.texCoord[2] = gl_TexCoord[2];
+	output.texCoord[3] = gl_TexCoord[3];
+	triStream.Append(output);
+
+	/*
+	void main()
+	{
+		vec3 pos = gl_PositionIn[0].xyz;
+		vec4 bounds = gl_TexCoordIn[0][0];
+		vec4 ndcPos = gl_TexCoordIn[0][5];
+
+		// frustrum culling
+		const float ndcBound = 1.0;
+		if (ndcPos.x < -ndcBound) return;
+		if (ndcPos.x > ndcBound) return;
+		if (ndcPos.y < -ndcBound) return;
+		if (ndcPos.y > ndcBound) return;
+
+		float xmin = bounds.x;
+		float xmax = bounds.y;
+		float ymin = bounds.z;
+		float ymax = bounds.w;
+
+		// inv quadric transform
+		gl_TexCoord[0] = gl_TexCoordIn[0][1];
+		gl_TexCoord[1] = gl_TexCoordIn[0][2];
+		gl_TexCoord[2] = gl_TexCoordIn[0][3];
+		gl_TexCoord[3] = gl_TexCoordIn[0][4];
+
+		gl_Position = vec4(xmin, ymax, 0.0, 1.0);
+		EmitVertex();
+
+		gl_Position = vec4(xmin, ymin, 0.0, 1.0);
+		EmitVertex();
+
+		gl_Position = vec4(xmax, ymax, 0.0, 1.0);
+		EmitVertex();
+
+		gl_Position = vec4(xmax, ymin, 0.0, 1.0);
+		EmitVertex();
+	}
+	*/
+}