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Custom encoding/decoding.

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Custom vector3 encoding/decoding test.
removed normal decoding from VA functions, this should now be done outside this function to allow easy switching of decoders.

Co-Authored-By: Neeto-rzo <68438932+Neeto-rzo@users.noreply.github.com>
This commit is contained in:
max
2020-12-08 00:33:06 +01:00
parent b63ee2ff02
commit f2b6a61d1e
17 changed files with 1039 additions and 342 deletions
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122
Runtime/Shaders/HLSL/VectorEncodingDecoding.hlsl
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@ -2,16 +2,27 @@
#ifndef VECTOR_ENCODING_DECODING_INCLUDED
#define VECTOR_ENCODING_DECODING_INCLUDED
// Ref: SideFX.
void DecodeFloat1ToFloat3_float(float f1, out float3 f3)
#define V_PI 3.14159265359f
#define V_TWO_PI 6.28318530718f
#define V_HALF_PI 1.57079632679f
void EncodeFloat3ToFloat1_float(float3 f3, out float f1)
{
float z = sqrt(f3.z * 8 + 8);
float y = (f3.y / z + 0.5f) * 31;
float x = floor((f3.x / z + 0.5f) * 31) * 32;
f1 = (x + y) / 1023;
}
void DecodeFloat1ToFloat2_float(float f1, out float2 f2)
{
//decode float to float2
f1 *= 1024;
float2 f2;
f2.x = floor(f1 / 32.0) / 31.5;
f2.y = (f1 - (floor(f1 / 32.0) * 32.0)) / 31.5;
}
//decode float2 to float3
void DecodeFloat2ToFloat3_float(float f2, out float3 f3)
{
f2 *= 4;
f2 -= 2;
float f2dot = dot(f2, f2);
@ -20,73 +31,11 @@ void DecodeFloat1ToFloat3_float(float f1, out float3 f3)
f3 = clamp(f3, -1.0, 1.0);
}
void EncodeFloat3ToFloat1_float(float3 f3, out float f1)
void DecodeFloat1ToFloat3_float(float f1, out float3 f3)
{
float z = sqrt(f3.z * 8 + 8);
float y = (f3.y / z + 0.5f) * 31;
float x = floor((f3.x / z + 0.5f) * 31) * 32;
float o = (x + y) / 1023;
f1 = o;
//float fval1 = f3.x;
//float fval2 = f3.y;
//float fval3 = f3.z;
//float scaled0;
//float added0;
//float sqrt0;
//float div0;
//float added1;
//float scaled1;
//float floor0;
//float scaled2;
//float div1;
//float added2;
//float scaled3;
//float sum0;
//float scaled4;
//// Code produced by: mulconst1
//scaled0 = fval3 * 8;
//// Code produced by: addconst1
//added0 = scaled0 + 8;
//// Code produced by: sqrt1
//sqrt0 = sqrt(added0);
//// Code produced by: divide1
//div0 = fval1 / sqrt0;
//// Code produced by: addconst2
//added1 = div0 + 0.5;
//// Code produced by: mulconst2
//scaled1 = added1 * 31;
//// Code produced by: floor1
//floor0 = floor(scaled1);
//// Code produced by: mulconst3
//scaled2 = floor0 * 32;
//// Code produced by: divide2
//div1 = fval2 / sqrt0;
//// Code produced by: addconst3
//added2 = div1 + 0.5;
//// Code produced by: mulconst4
//scaled3 = added2 * 31;
//// Code produced by: add1
//sum0 = scaled2 + scaled3;
//// Code produced by: divconst1
//scaled4 = sum0 * (1.0 / 1023);
//f1 = scaled4;
float2 f2;
DecodeFloat1ToFloat2_float(f1, f2);
DecodeFloat2ToFloat3_float(f2, f3);
}
// Ref:
@ -102,4 +51,35 @@ void Decode2Float1ToFloat3_float(float f1, out float3 f3)
f3 = (frac((f1) / float3(16777216, 65536, 256)));
}
// Custom
// Decode 0..1 float.
void FloatToFloat2_float(float f1, out float2 f2)
{
f1 *= 256;
f2.x = (f1 % 16) / 15;
f2.y = ((f1 / 256) * 16);
f2.y = floor(f2.y) / 15;
}
void Float2ToFloat3_float(float2 f2, out float3 f3)
{
float dist = 1 - abs((f2.y - 0.5f) * 2);
float temp = (f2.x * V_TWO_PI) - V_PI;
f3.x = sin(temp + V_TWO_PI) * dist;
f3.z = cos((temp - V_PI) + V_TWO_PI) * dist;
f3.y = (f2.y - 0.5f) * -2;
f3 = normalize(f3);
}
void FloatToFloat3_float(float f1, out float3 f3)
{
float2 f2;
FloatToFloat2_float(f1, f2);
Float2ToFloat3_float(f2, f3);
}
#endif

14
Runtime/Shaders/HLSL/VertexAnimation.hlsl
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@ -21,30 +21,32 @@ float2 VA_UV_float(float2 uv, int maxFrames, float time)
}
void VA_float(float2 uv, SamplerState texSampler, Texture2D positionMap, float time, int maxFrames,
out float3 outPosition, out float3 outNormal)
out float3 position, out float3 alpha)
{
float2 uvPosition = VA_UV_float(uv, maxFrames, time);
// Position.
float4 texturePos = positionMap.SampleLevel(texSampler, uvPosition, 0);
outPosition = texturePos.xyz;
position = texturePos.xyz;
// Normal.
DecodeFloat1ToFloat3_float(texturePos.w, outNormal);
//FloatToFloat3_float(texturePos.w, outNormal);
alpha = texturePos.w;
}
void VA_ARRAY_float(float2 uv, SamplerState texSampler, Texture2DArray positionMap, float positionMapIndex, float time, int maxFrames,
out float3 outPosition, out float3 outNormal)
out float3 position, out float3 alpha)
{
float2 uvPosition = VA_UV_float(uv, maxFrames, time);
// Position.
float4 texturePos;
SampleTexture2DArrayLOD_float(positionMap, uvPosition, texSampler, positionMapIndex, 0, texturePos);
outPosition = texturePos.xyz;
position = texturePos.xyz;
// Normal.
DecodeFloat1ToFloat3_float(texturePos.w, outNormal);
//FloatToFloat3_float(texturePos.w, outNormal);
alpha = texturePos.w;
}
#endif