Initial commit

client/common/shaders/source/sky.hlsl

@@ -0,0 +1,53 @@
+#include "common.h"
+
+struct Appdata
+{
+    float4 Position	    : POSITION;
+    float2 Uv	        : TEXCOORD0;
+    float4 Color        : COLOR0;
+};
+
+struct VertexOutput
+{
+    float4 HPosition    : POSITION;
+    float PSize         : PSIZE;
+
+    float2 Uv           : TEXCOORD0;
+    float4 Color        : COLOR0;
+};
+
+WORLD_MATRIX(WorldMatrix);
+
+uniform float4 Color;
+uniform float4 Color2;
+
+VertexOutput SkyVS(Appdata IN)
+{
+    VertexOutput OUT = (VertexOutput)0;
+
+    float4 wpos = mul(WorldMatrix, IN.Position);
+
+    OUT.HPosition = mul(G(ViewProjection), wpos);
+
+#ifndef GLSLES
+    // snap to far plane to prevent scene-sky intersections
+    // small offset is needed to prevent 0/0 division in case w=0, which causes rasterization issues
+    // some mobile chips (hello, Vivante!) don't like it
+    OUT.HPosition.z = OUT.HPosition.w - 1.f / 16;
+#endif
+
+    OUT.PSize = 2.0; // star size
+
+    OUT.Uv = IN.Uv;
+    OUT.Color = IN.Color * lerp(Color2,Color,wpos.y/1700);
+    //OUT.Color = IN.Color * Color;
+
+    return OUT;
+}
+
+TEX_DECLARE2D(DiffuseMap, 0);
+
+float4 SkyPS(VertexOutput IN): COLOR0
+{
+    return tex2D(DiffuseMap, IN.Uv) * IN.Color;
+}