Daydream Shader

I spent some time remaking the water. Before the Waves were pretty symmetrical. I added more randomness by adding more cos and sin waves with different speed and direction.

Before:

wavePos = floor(wavePos * 16.0) / 16.0;
float wave = sin(wavePos.x * 1.5 + frameTimeCounter * 2.0) * 0.08 +
cos(wavePos.z * 1.5 + frameTimeCounter * 1.8) * 0.08;

After:

float wave = 0.0;
wave += sin(wavePos.x * 1.2 + frameTimeCounter * 1.6) * 0.07;
wave += sin(wavePos.z * 1.4 + frameTimeCounter * 1.9) * 0.05;
wave += sin((wavePos.x + wavePos.z) * 1.0 + frameTimeCounter * 1.1) * 0.04;
wave += cos((wavePos.x - wavePos.z) * 1.1 + frameTimeCounter * 1.3) * 0.045;

Then I went to the gbuffer_terrain.fsh and gbuffer_terrain.vsh. It is there fore the foundation for shadow mapping by calculating the shadow coordinates in the vertex shader and getting the shadow map.

When i finnished that i went to the composite.fsh to actually getting the shadows to run.
But first i began working on the overall lighting to make it feel much brighter and cooler.

vec3 sunLight = vec3(1.0, 0.92, 0.78) * shadow * lm.y;vec3 skyAmbient = vec3(0.3, 0.42, 0.55) * lm.y;vec3 blocklight = vec3(1.0, 0.6, 0.3) * lm.x * lm.x;vec3 lighting = sunLight + skyAmbient + blocklight + 0.03;

Now the shadows. The shadowSample() function takes the reconstructed player position and normal ( reconstructed player = 3d world position from a pixel, normal = where a surface is facing to) and transforms it into the shadow map.

I also added 6 shadow samples around the pixel (geminis advice) to make the shadows softer instead of sharp (Though i might change that because as you will se in the picture the shadow is ugly… It might be because of that).

float shadow = step(sp.z, texture2D(shadowtex0, sp.xy).r) * 0.4+ step(sp.z, texture2D(shadowtex0, sp.xy + vec2( r, r)).r) * 0.15+ step(sp.z, texture2D(shadowtex0, sp.xy + vec2(-r, r)).r) * 0.15+ step(sp.z, texture2D(shadowtex0, sp.xy + vec2( r, -r)).r) * 0.15+ step(sp.z, texture2D(shadowtex0, sp.xy + vec2(-r, -r)).r) * 0.15;

The shadow itself is actiavated in main() with:

float shadow = shadowSample(playerPos, normal);

After all that though, the shadow didnt work and i was looking for it like 30 minutes and also troubleshootign with AI and after changeing the code like 10 times it also didnt work so I reverted the changes and noticed that:

uniform float shadowDistance; is wrong because it of course needs a number :/

-> uniform float shadowDistance = 128.0;

Im making a shader for Minecraft and after upgrading the template from 1.21.5 to 26.2 I implemented waves to water.. It took long 😭 but it wasnt that difficult. I also added a pciture here.

With mc_Entity i added blockID for specifically Water to the IDs 10034 and 10033. For the animation I used sine and cosine functions.
After i styled the Water by blending its texture with a blue tint:

vec3 waterColor = vec3(0.1, 0.4, 0.8);

Though, because it was all the same color, you couldnt really see the waved that were further away than 3 blocks, so I implented a bit of shadow:

shadow = texture(shadowtex0, shadowCoord.st).r;albedo.rgb *=mix(0.5, 1.0, shadow);