Geometry shader support for HLSL

reference/opt/shaders-hlsl/geom/triangles.geom

@@ -0,0 +1,55 @@
+static float4 gl_Position;
+static float4 vPositionIn[1];
+static float3 vColorIn[1];
+static float3 gColor;
+
+struct SPIRV_Cross_Input
+{
+    float4 vPositionIn : TEXCOORD0;
+    float3 vColorIn : TEXCOORD1;
+};
+
+struct SPIRV_Cross_Output
+{
+    float3 gColor : TEXCOORD0;
+    float4 gl_Position : SV_Position;
+};
+
+void geom_main(point SPIRV_Cross_Input stage_input[1], inout TriangleStream<SPIRV_Cross_Output> triStream)
+{
+    gColor = vColorIn[0];
+    gl_Position = vPositionIn[0] + float4(-0.100000001490116119384765625f, -0.100000001490116119384765625f, 0.0f, 0.0f);
+    {
+        SPIRV_Cross_Output stage_output;
+        stage_output.gl_Position = gl_Position;
+        stage_output.gColor = gColor;
+        triStream.Append(stage_output);
+    }
+    gColor = vColorIn[0];
+    gl_Position = vPositionIn[0] + float4(0.100000001490116119384765625f, -0.100000001490116119384765625f, 0.0f, 0.0f);
+    {
+        SPIRV_Cross_Output stage_output;
+        stage_output.gl_Position = gl_Position;
+        stage_output.gColor = gColor;
+        triStream.Append(stage_output);
+    }
+    gColor = vColorIn[0];
+    gl_Position = vPositionIn[0] + float4(0.0f, 0.100000001490116119384765625f, 0.0f, 0.0f);
+    {
+        SPIRV_Cross_Output stage_output;
+        stage_output.gl_Position = gl_Position;
+        stage_output.gColor = gColor;
+        triStream.Append(stage_output);
+    }
+    triStream.RestartStrip();
+}
+
+[maxvertexcount(3)]
+void main(point SPIRV_Cross_Input stage_input[1], inout TriangleStream<SPIRV_Cross_Output> triStream)
+{
+    for(int i = 0; i < 1; i++)
+    vPositionIn[i] = stage_input[i].vPositionIn;
+    for(int i = 0; i < 1; i++)
+    vColorIn[i] = stage_input[i].vColorIn;
+    geom_main(stage_input, triStream);
+}

reference/shaders-hlsl/geom/triangles.geom

@@ -0,0 +1,57 @@
+static float4 gl_Position;
+static float4 vPositionIn[1];
+static float3 vColorIn[1];
+static float3 gColor;
+
+struct SPIRV_Cross_Input
+{
+    float4 vPositionIn : TEXCOORD0;
+    float3 vColorIn : TEXCOORD1;
+};
+
+struct SPIRV_Cross_Output
+{
+    float3 gColor : TEXCOORD0;
+    float4 gl_Position : SV_Position;
+};
+
+void geom_main(point SPIRV_Cross_Input stage_input[1], inout TriangleStream<SPIRV_Cross_Output> triStream)
+{
+    float4 center = vPositionIn[0];
+    float3 color = vColorIn[0];
+    gColor = color;
+    gl_Position = center + float4(-0.100000001490116119384765625f, -0.100000001490116119384765625f, 0.0f, 0.0f);
+    {
+        SPIRV_Cross_Output stage_output;
+        stage_output.gl_Position = gl_Position;
+        stage_output.gColor = gColor;
+        triStream.Append(stage_output);
+    }
+    gColor = color;
+    gl_Position = center + float4(0.100000001490116119384765625f, -0.100000001490116119384765625f, 0.0f, 0.0f);
+    {
+        SPIRV_Cross_Output stage_output;
+        stage_output.gl_Position = gl_Position;
+        stage_output.gColor = gColor;
+        triStream.Append(stage_output);
+    }
+    gColor = color;
+    gl_Position = center + float4(0.0f, 0.100000001490116119384765625f, 0.0f, 0.0f);
+    {
+        SPIRV_Cross_Output stage_output;
+        stage_output.gl_Position = gl_Position;
+        stage_output.gColor = gColor;
+        triStream.Append(stage_output);
+    }
+    triStream.RestartStrip();
+}
+
+[maxvertexcount(3)]
+void main(point SPIRV_Cross_Input stage_input[1], inout TriangleStream<SPIRV_Cross_Output> triStream)
+{
+    for(int i = 0; i < 1; i++)
+    vPositionIn[i] = stage_input[i].vPositionIn;
+    for(int i = 0; i < 1; i++)
+    vColorIn[i] = stage_input[i].vColorIn;
+    geom_main(stage_input, triStream);
+}

shaders-hlsl/geom/triangles.geom

@@ -0,0 +1,28 @@
+#version 450
+
+layout(points) in;
+layout(triangle_strip, max_vertices = 3) out;
+
+layout(location = 0) in vec4 vPositionIn[1];
+layout(location = 1) in vec3 vColorIn[1];
+
+layout(location = 0) out vec3 gColor;
+
+void main() {
+    vec4 center = vPositionIn[0];
+    vec3 color = vColorIn[0];
+
+    gColor = color;
+    gl_Position = center + vec4(-0.1, -0.1, 0.0, 0.0);
+    EmitVertex();
+
+    gColor = color;
+    gl_Position = center + vec4(0.1, -0.1, 0.0, 0.0);
+    EmitVertex();
+
+    gColor = color;
+    gl_Position = center + vec4(0.0, 0.1, 0.0, 0.0);
+    EmitVertex();
+
+    EndPrimitive();
+}