1 files changed, 128 insertions, 50 deletions
diff --git a/cwd/shaders/block.fs b/cwd/shaders/block.fs
index dcc78cc..8795fb2 100644
--- a/cwd/shaders/block.fs
+++ b/cwd/shaders/block.fs
@@ -2,58 +2,101 @@
 
 in vec2 UvPosition;
 
-uniform float time;
-uniform int block;
+uniform int Block;
+uniform int State;
 uniform sampler2D textureAtlas;
+uniform float time;
 
 // TextureIndex: [most significant bit]<-...<-side[3bit]<-id[13]<-state[4]
 layout(std140) uniform TextureIndexes { // binding point: 0
   int totalTextures;
-  int indexes[2047];
+  int indexes[1023];
+};
+layout(std140) uniform TextureData { // binding point: 1
+  vec4 textureData[1024];
 };
-// layout(std140) uniform TextureData { vec4 textureData[1024]; }; //binding point: 1
-// layout(std140) uniform TextureData2 { vec4 textureData2[1024]; }; //binddingpoint: 2
-vec4 GetTextureByBlockId(int BlockId);
+
+vec4 GetTextureByBlockId();
 vec2 TransformTextureCoord(vec4 TextureAtlasCoords, vec2 UvCoords);
+vec4 CheckIndexValidness();
+vec4 GetDepthColor();
+vec4 GetCheckerColor();
+vec4 VTC(int value);
+
+in vec3 FragmentPosition;
+int GetBlockSide(){
+    int side=6;
+      if (FragmentPosition.y==-0.5)
+              side=0;
+      else if (FragmentPosition.y==0.5)
+              side=1;
+      else if (FragmentPosition.x==-0.5)
+          side = 3;
+      else if (FragmentPosition.x==0.5)
+          side = 2;
+      else if (FragmentPosition.z==-0.5)
+          side=4;
+      else if (FragmentPosition.z==0.5)
+          side=5;
+    return side;
+}
+int index,side,id,state;
+
+vec3 rgb2hsv(vec3 c)
+{
+    vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
+    vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
+    vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
+
+    float d = q.x - min(q.w, q.y);
+    float e = 1.0e-10;
+    return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
+}
+
+vec3 hsv2rgb(vec3 c)
+{
+    vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
+    vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
+    return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
+}
+
 
 void main() {
-vec4 bad = vec4(1,0,0,1);
-  vec4 color = vec4(0,1,0,1);
-    if (totalTextures!=6)
-        color = bad;
-    if (indexes[0]!=393248)
-        color = bad;
-  for (int i=1;i<2047;i++)
-    if (indexes[i]!=0)
-        color=bad;
-  gl_FragColor = color;
-  /*vec4 BlockTextureCoords = GetTextureByBlockId(block);
+  vec4 BlockTextureCoords = GetTextureByBlockId();
   vec2 AtlasCoords = TransformTextureCoord(BlockTextureCoords, UvPosition);
-  gl_FragColor = texture(textureAtlas, AtlasCoords);*/
+  gl_FragColor = texture(textureAtlas, AtlasCoords);
+  if (id==2 && side==1) { //Grass colorizing
+    const float BiomeColor = 0.275;
+    vec3 hsvColor = rgb2hsv(gl_FragColor.xyz);
+    hsvColor[0]+=BiomeColor;
+    hsvColor[1]=0.63;
+    hsvColor[2]+=0.1;
+    gl_FragColor = vec4(hsv2rgb(hsvColor),1);
+  }
 }
 
-vec4 GetTextureByBlockId(int BlockId) {
-  if (indexes[0] == 0)
-    return vec4(0.05, 0.004, 0.007, 0.004);
-
-  if (totalTextures == 0)
-    return vec4(0, 0, 0.1, 0.1);
-  for (int i = 0; i < totalTextures; i++) {
-    int index = indexes[i + 1];
-    int side = (index & 0xE0000) >> 16;
-    int id = (index & 0xFF0) >> 4;
-    int state = index & 0xF;
-    if (id == BlockId) {
-      return vec4(i, 0, 1, 1);
+vec4 GetTextureByBlockId() {
+    int BlockSide = GetBlockSide();
+    for (int i = 0; i < totalTextures; i++) {
+        index = indexes[i];
+        side = (index & 0x70000) >> 16;
+        id = (index & 0xFF0) >> 4;
+        state = index & 0xF;
+
+        if (id != Block)
+            continue;
+        if (state != State)
+            continue;
+        if (side == 6)
+            return textureData[i];
+        if (BlockSide == side)
+            return textureData[i];
+        if (side == 6)
+            return textureData[i];
+        else if (side == BlockSide)
+            return textureData[i];
     }
-  }
-  /*
-    TNT texture:
-    X 0.0546875
-    Y ~0.00442477876106194690
-    W 0.0078125
-    H ~0.00442477876106194690
-  */
+  // Fallback TNT texture
   return vec4(0.0546875, 0.00442477876106194690, 0.0078125,
               0.00442477876106194690);
 }
@@ -75,21 +118,56 @@ vec2 TransformTextureCoord(vec4 TextureAtlasCoords, vec2 UvCoords) {
   return A + UvCoords * (B - A);
 }
 
-/*
+vec4 CheckIndexValidness() {
+  vec4 color = vec4(0, 1, 0, 1);
+  if (totalTextures != 6)
+    return vec4(1, 0, 0, 1);
+  if (indexes[0] != 393248)
+    return vec4(1, 1, 0, 1);
+  for (int i = 1; i < 20; i++)
+    if (indexes[i] != 0)
+      return vec4(0, 0, 1, 1);
+  return vec4(0, 1, 0, 1);
+}
 
 float near = 1.0;
-float far  = 100.0;
+float far = 100.0;
 
-float LinearizeDepth(float depth)
-{
-    float z = depth * 2.0 - 1.0; // Back to NDC
-    return (2.0 * near * far) / (far + near - z * (far - near));
+float LinearizeDepth(float depth) {
+  float z = depth * 2.0 - 1.0; // Back to NDC
+  return (2.0 * near * far) / (far + near - z * (far - near));
 }
 
-void main()
-{
-    float depth = LinearizeDepth(gl_FragCoord.z) / far; // divide by far for demonstration
-    gl_FragColor = vec4(vec3(depth), 1.0f);
-}*/
+vec4 GetDepthColor() {
+  float depth =
+      LinearizeDepth(gl_FragCoord.z) / far; // divide by far for demonstration
+  return vec4(vec3(depth), 1.0f);
+}
 
+vec4 GetCheckerColor() {
+    if (UvPosition.x>0.5 && UvPosition.y<0.5 || UvPosition.x<0.5 && UvPosition.y>0.5)
+        return vec4(0.7,0.7,0,1);
+    else
+        return vec4(0,0,0,1);
+}
 
+vec4 VTC(int value){
+    switch(value)
+    {
+        case 0:
+            return vec4(0,0,0,1);
+        case 1:
+            return vec4(1,0,0,1);
+        case 2:
+            return vec4(0,1,0,1);
+        case 3:
+            return vec4(0,0,1,1);
+        case 4:
+            return vec4(1,1,0,1);
+        case 5:
+            return vec4(1,0,1,1);
+        case 6:
+            return vec4(0,1,1,1);
+    }
+    return vec4(1,1,1,1);
+}