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Move crack overlay to shader

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This commit is contained in:
sfan5
2025-10-19 13:14:00 +02:00
parent c58a7ad98a
commit 4756e23477
10 changed files with 132 additions and 94 deletions
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34
client/shaders/nodes_shader/opengl_fragment.glsl
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@@ -1,4 +1,6 @@
uniform sampler2D baseTexture;
#define crackTexture texture1
uniform sampler2D crackTexture;
uniform vec3 dayLight;
uniform lowp vec4 fogColor;
@@ -9,6 +11,10 @@ uniform float fogShadingParameter;
uniform highp vec3 cameraOffset;
uniform vec3 cameraPosition;
uniform float animationTimer;
uniform float crackAnimationLength;
uniform float crackLevel;
uniform float crackTextureScale;
#ifdef ENABLE_DYNAMIC_SHADOWS
// shadow texture
uniform sampler2D ShadowMapSampler;
@@ -411,9 +417,18 @@ float getShadow(sampler2D shadowsampler, vec2 smTexCoord, float realDistance)
#endif
#endif
// maps [0, N] to [0, 1] like GL_REPEAT would
vec2 uv_repeat(vec2 v)
{
if (v.x > 1.0)
v.x = fract(v.x);
if (v.y > 1.0)
v.y = fract(v.y);
return v;
}
void main(void)
{
vec3 color;
vec2 uv = varTexCoord.st;
vec4 base = texture2D(baseTexture, uv).rgba;
@@ -429,8 +444,19 @@ void main(void)
discard;
#endif
color = base.rgb;
vec4 col = vec4(color.rgb * varColor.rgb, 1.0);
// Apply crack overlay
float crack_progress = min(crackLevel, crackAnimationLength - 1.0);
if (crack_progress >= 0.0) {
// undo scaling of e.g. world-aligned nodes
vec2 orig_uv = uv_repeat(uv * vec2(crackTextureScale));
vec2 cuv_offset = vec2(0.0, crack_progress / crackAnimationLength);
vec2 cuv_factor = vec2(1.0, 1.0 / crackAnimationLength);
vec4 crack = texture2D(crackTexture, cuv_offset + orig_uv * cuv_factor);
base = mix(base, crack, crack.a);
}
vec4 col = vec4(base.rgb * varColor.rgb, 1.0);
#ifdef ENABLE_DYNAMIC_SHADOWS
// Fragment normal, can differ from vNormal which is derived from vertex normals.
@@ -570,5 +596,5 @@ void main(void)
col = mix(fogColor * pow(fogColor / fogColorMax, vec4(2.0 * clarity)), col, clarity);
col = vec4(col.rgb, base.a);
gl_FragData[0] = col;
gl_FragColor = col;
}