1.2.0.beta.11.2.0.beta.1

1 files changed, 68 insertions, 0 deletions

diff --git a/demo/d3d/shaders/pointGS.hlsl b/demo/d3d/shaders/pointGS.hlsl
new file mode 100644
index 0000000..4d654af
--- /dev/null
+++ b/demo/d3d/shaders/pointGS.hlsl
@@ -0,0 +1,68 @@
+#include "shaderCommon.h"
+
+cbuffer constBuf : register(b0)
+{
+	PointShaderConst 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 pointGS(point PointVertexOut input[1], inout TriangleStream<PointGeoOut> triStream)
+{
+	const float4x4 modelViewMatrix = gParams.modelView;
+	const float pointRadius = gParams.pointRadius;
+	const float pointScale = gParams.pointScale;
+	const float4x4 lightTransform = gParams.lightTransform;
+	const float3 lightDir = gParams.lightDir.xyz;
+	const int mode = gParams.mode;
+
+	const float4 viewPosition = input[0].viewPosition;
+	const float density = input[0].density;
+	const unsigned int phase = input[0].phase;
+	const float4 modelPosition = input[0].modelPosition;
+
+	//float spriteSize = (pointRadius / viewPos.z);
+	const float spriteSize = pointRadius * 2;
+
+	PointGeoOut output;
+	for (int i = 0; i < 4; ++i)
+	{
+		const float2 corner = corners[i];
+		float4 eyePos = viewPosition;									// start with point position
+		eyePos.xy += spriteSize * (corner - float2(0.5, 0.5));		// add corner position
+		output.position = mul(gParams.projection, eyePos);			// complete transformation
+
+		// use corner as texCoord,  flip the y component of uv (glsl to hlsl conversion)
+		output.texCoord = float2(corner.x, 1.0f - corner.y);
+		output.lightOffsetPosition = mul(lightTransform, float4(modelPosition.xyz - lightDir * pointRadius * 2.0, 1.0));
+		output.viewLightDir = mul(modelViewMatrix, float4(lightDir, 0.0)).xyz;
+
+		if (mode == 1)
+		{
+			// density visualization
+			if (density < 0.0f)
+				output.reflectance = float4(lerp(float3(0.1, 0.1, 1.0), float3(0.1, 1.0, 1.0), -density), 0);
+			else
+				output.reflectance = float4(lerp(float3(1.0, 1.0, 1.0), float3(0.1, 0.2, 1.0), density), 0);
+		}
+		else if (mode == 2)
+		{
+			//gl_PointSize *= clamp(inPosition.w * 0.25, 0.0f, 1.0);
+			float tmp = clamp(modelPosition.w * 0.05, 0.0f, 1.0);
+			output.reflectance = float4(tmp, tmp, tmp, tmp);
+		}
+		else
+		{
+			output.reflectance = float4(lerp(gParams.colors[phase % 8].xyz * 2.0, float3(1.0, 1.0, 1.0), 0.1), 0);
+		}
+
+		output.modelPosition= modelPosition.xyz;
+		output.viewPosition = viewPosition.xyz;
+
+		triStream.Append(output);
+	}
+}