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path: root/client/shaders/water_surface_shader/opengl_fragment.glsl
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Diffstat (limited to 'client/shaders/water_surface_shader/opengl_fragment.glsl')
-rw-r--r--client/shaders/water_surface_shader/opengl_fragment.glsl121
1 files changed, 0 insertions, 121 deletions
diff --git a/client/shaders/water_surface_shader/opengl_fragment.glsl b/client/shaders/water_surface_shader/opengl_fragment.glsl
deleted file mode 100644
index 6dc96eb48..000000000
--- a/client/shaders/water_surface_shader/opengl_fragment.glsl
+++ /dev/null
@@ -1,121 +0,0 @@
-uniform sampler2D baseTexture;
-uniform sampler2D normalTexture;
-uniform sampler2D useNormalmap;
-
-uniform vec4 skyBgColor;
-uniform float fogDistance;
-uniform vec3 eyePosition;
-
-varying vec3 vPosition;
-varying vec3 worldPosition;
-
-varying vec3 eyeVec;
-varying vec3 tsEyeVec;
-varying vec3 lightVec;
-varying vec3 tsLightVec;
-
-bool normalTexturePresent = false;
-
-const float e = 2.718281828459;
-const float BS = 10.0;
-
-float intensity (vec3 color){
- return (color.r + color.g + color.b) / 3.0;
-}
-
-float get_rgb_height (vec2 uv){
- return intensity(texture2D(baseTexture,uv).rgb);
-}
-
-vec4 get_normal_map(vec2 uv){
- vec4 bump = texture2D(normalTexture, uv).rgba;
- bump.xyz = normalize(bump.xyz * 2.0 -1.0);
- bump.y = -bump.y;
- return bump;
-}
-
-void main (void)
-{
- vec3 color;
- vec4 bump;
- vec2 uv = gl_TexCoord[0].st;
- bool use_normalmap = false;
-
-#ifdef USE_NORMALMAPS
- if (texture2D(useNormalmap,vec2(1.0,1.0)).r > 0.0){
- normalTexturePresent = true;
- }
-#endif
-
-#ifdef ENABLE_PARALLAX_OCCLUSION
- if (normalTexturePresent){
- vec3 tsEye = normalize(tsEyeVec);
- float height = PARALLAX_OCCLUSION_SCALE * texture2D(normalTexture, uv).a - PARALLAX_OCCLUSION_BIAS;
- uv = uv + texture2D(normalTexture, uv).z * height * vec2(tsEye.x,-tsEye.y);
- }
-#endif
-
-#ifdef USE_NORMALMAPS
- if (normalTexturePresent){
- bump = get_normal_map(uv);
- use_normalmap = true;
- }
-#endif
-
-#ifdef GENERATE_NORMALMAPS
- if (use_normalmap == false){
- float tl = get_rgb_height (vec2(uv.x-SAMPLE_STEP,uv.y+SAMPLE_STEP));
- float t = get_rgb_height (vec2(uv.x-SAMPLE_STEP,uv.y-SAMPLE_STEP));
- float tr = get_rgb_height (vec2(uv.x+SAMPLE_STEP,uv.y+SAMPLE_STEP));
- float r = get_rgb_height (vec2(uv.x+SAMPLE_STEP,uv.y));
- float br = get_rgb_height (vec2(uv.x+SAMPLE_STEP,uv.y-SAMPLE_STEP));
- float b = get_rgb_height (vec2(uv.x,uv.y-SAMPLE_STEP));
- float bl = get_rgb_height (vec2(uv.x-SAMPLE_STEP,uv.y-SAMPLE_STEP));
- float l = get_rgb_height (vec2(uv.x-SAMPLE_STEP,uv.y));
- float dX = (tr + 2.0 * r + br) - (tl + 2.0 * l + bl);
- float dY = (bl + 2.0 * b + br) - (tl + 2.0 * t + tr);
- bump = vec4 (normalize(vec3 (dX, -dY, NORMALMAPS_STRENGTH)),1.0);
- use_normalmap = true;
- }
-#endif
-
-vec4 base = texture2D(baseTexture, uv).rgba;
-
-#ifdef ENABLE_BUMPMAPPING
- if (use_normalmap){
- vec3 L = normalize(lightVec);
- vec3 E = normalize(eyeVec);
- float specular = pow(clamp(dot(reflect(L, bump.xyz), E), 0.0, 1.0),0.5);
- float diffuse = dot(E,bump.xyz);
- /* Mathematic optimization
- * Original: color = 0.05*base.rgb + diffuse*base.rgb + 0.2*specular*base.rgb;
- * This optimization save 2 multiplications (orig: 4 multiplications + 3 additions
- * end: 2 multiplications + 3 additions)
- */
- color = (0.05 + diffuse + 0.2 * specular) * base.rgb;
- } else {
- color = base.rgb;
- }
-#else
- color = base.rgb;
-#endif
-
-#if MATERIAL_TYPE == TILE_MATERIAL_LIQUID_TRANSPARENT || MATERIAL_TYPE == TILE_MATERIAL_LIQUID_OPAQUE
- float alpha = gl_Color.a;
- vec4 col = vec4(color.rgb, alpha);
- col *= gl_Color;
- if(fogDistance != 0.0){
- float d = max(0.0, min(vPosition.z / fogDistance * 1.5 - 0.6, 1.0));
- alpha = mix(alpha, 0.0, d);
- }
- gl_FragColor = vec4(col.rgb, alpha);
-#else
- vec4 col = vec4(color.rgb, base.a);
- col *= gl_Color;
- if(fogDistance != 0.0){
- float d = max(0.0, min(vPosition.z / fogDistance * 1.5 - 0.6, 1.0));
- col = mix(col, skyBgColor, d);
- }
- gl_FragColor = vec4(col.rgb, base.a);
-#endif
-}