Reimplement voxel rendering with a FBO.

cg/vxlshadow.fx

@@ -1,90 +0,0 @@
-mat4x4 View;
-mat4x4 TransformMatrix;
-float4 LightDirection;
-float GroundZ;
-float3 GroundNormal;
-
-float2 PaletteRows;
-float3 AmbientLight, DiffuseLight;
-
-sampler2D DiffuseTexture = sampler_state {
-	MinFilter = Nearest;
-	MagFilter = Nearest;
-	WrapS = Repeat;
-	WrapT = Repeat;
-};
-
-sampler2D Palette = sampler_state {
-	MinFilter = Nearest;
-	MagFilter = Nearest;
-	WrapS = Repeat;
-	WrapT = Repeat;
-};
-
-struct VertexIn {
-	float4 Position: POSITION;
-	float4 Tex0: TEXCOORD0;
-};
-
-struct VertexOut {
-	float4 Position: POSITION;
-	float2 Tex0: TEXCOORD0;
-	float4 ColorChannel: TEXCOORD1;
-	float4 NormalsChannel: TEXCOORD2;
-};
-
-float4 DecodeChannelMask(float x)
-{
-	if (x > 0)
-		return (x > 0.5f) ? float4(1,0,0,0) : float4(0,1,0,0);
-	else
-		return (x <-0.5f) ? float4(0,0,0,1) : float4(0,0,1,0);
-}
-
-VertexOut Simple_vp(VertexIn v) {
-	// Distance between vertex and ground
-	float d = dot(v.Position.xyz - float3(0.0,0.0,GroundZ), GroundNormal) / dot(LightDirection.xyz, GroundNormal);
-	float3 shadow = v.Position.xyz - d*LightDirection.xyz;
-
-	VertexOut o;
-	o.Position = mul(mul(vec4(shadow, 1), TransformMatrix), View);
-	o.Tex0 = v.Tex0.xy;
-	o.ColorChannel = DecodeChannelMask(v.Tex0.z);
-	o.NormalsChannel = DecodeChannelMask(v.Tex0.w);
-	return o;
-}
-
-float4 Simple_fp(VertexOut f) : COLOR0 {
-	float4 x = tex2D(DiffuseTexture, f.Tex0.xy);
-	vec4 color = tex2D(Palette, float2(dot(x, f.ColorChannel), PaletteRows.x));
-	if (color.a < 0.01)
-		discard;
-
-	return color;
-}
-
-technique high_quality {
-	pass p0 {
-		BlendEnable = true;
-		DepthTestEnable = true;
-		CullFaceEnable = false;
-		VertexProgram = compile latest Simple_vp();
-		FragmentProgram = compile latest Simple_fp();
-
-		BlendEquation = FuncAdd;
-		BlendFunc = int2(SrcAlpha, OneMinusSrcAlpha);
-	}
-}
-
-technique high_quality_cg21 {
-	pass p0 {
-		BlendEnable = true;
-		DepthTestEnable = true;
-		CullFaceEnable = false;
-		VertexProgram = compile arbvp1 Simple_vp();
-		FragmentProgram = compile arbfp1 Simple_fp();
-
-		BlendEquation = FuncAdd;
-		BlendFunc = int2(SrcAlpha, OneMinusSrcAlpha);
-	}
-}