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Code Issues 123 Wiki Activity

initial rain material optimizations

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This commit is contained in:
Wls50
2025-11-23 10:39:56 +01:00
committed by Hirek
parent 593a8a288f
commit 90538c8878
7 changed files with 44 additions and 25 deletions
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2
betterRenderer/shaders/project.manul
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@@ -135,10 +135,12 @@ shaders:
binding: 1
hint: color
default: white
no_anisotropy: true
wipermask:
binding: 2
hint: color
default: white
no_filter: true
masked_shadow_texture: diffuse
source: ps_windshield_rain
utility:

14
betterRenderer/shaders/ps_windshield_rain.hlsl
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@@ -4,6 +4,8 @@
#include "manul/random.hlsli"
sampler diffuse_sampler : register(s0);
sampler raindrop_sampler : register(s1);
sampler wipermask_sampler : register(s2);
Texture2D<float4> diffuse : register(t0);
Texture2D<float4> raindropsatlas : register(t1);
Texture2D<float4> wipermask : register(t2);
@@ -14,7 +16,7 @@ float4 getDropTex(float choice, float2 uv) {
else if (choice < .5) offset = float2(0.5, 0.0);
else if (choice < .75) offset = float2(0.0, 0.5);
else offset = float2(0.5, 0.5);
return raindropsatlas.Sample(diffuse_sampler, offset + uv * 0.5);
return raindropsatlas.Sample(raindrop_sampler, offset + uv * 0.5);
}
float GetMixFactor(in float2 co, out float side);
@@ -43,8 +45,11 @@ void MaterialPass(inout MaterialData material) {
float dropMaskSum = 0.;
// Grid of 9 droplets in immediate neighbourhood
for (int oy = -1; oy <= 1; oy++) {
for (int ox = -1; ox <= 1; ox++) {
[unroll]
for (int oy = -1; oy <= 1; ++oy) {
[unroll]
for (int ox = -1; ox <= 1; ++ox) {
float2 neighborCell = cell + float2(ox, oy);
float2 neighborCenter = (neighborCell + .5) / gridSize;
@@ -131,7 +136,7 @@ float GetMixFactor(in float2 co, out float side) {
bool4 is_out = movePhase <= 1.;
movePhase = select(is_out, movePhase, 2. - movePhase);
float4 mask = wipermask.Sample(diffuse_sampler, co);
float4 mask = wipermask.Sample(wipermask_sampler, co);
float4 areaMask = step(.001, mask);
@@ -153,6 +158,7 @@ float GetMixFactor(in float2 co, out float side) {
float out_factor = 1.;
// Find out the wiper blade that influences given grid cell the most
[unroll]
for(int i = 0; i < 4; ++i)
{
bool is_candidate = factor_v[i] < out_factor;