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-rw-r--r--client/shaders/water_surface_shader/opengl_fragment.glsl128
-rw-r--r--client/shaders/water_surface_shader/opengl_vertex.glsl135
2 files changed, 263 insertions, 0 deletions
diff --git a/client/shaders/water_surface_shader/opengl_fragment.glsl b/client/shaders/water_surface_shader/opengl_fragment.glsl
new file mode 100644
index 000000000..351faf81b
--- /dev/null
+++ b/client/shaders/water_surface_shader/opengl_fragment.glsl
@@ -0,0 +1,128 @@
+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);
+ color = 0.05*base.rgb + diffuse*base.rgb + 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;
+ col = col * col; // SRGB -> Linear
+ col *= 1.8;
+ col.r = 1.0 - exp(1.0 - col.r) / e;
+ col.g = 1.0 - exp(1.0 - col.g) / e;
+ col.b = 1.0 - exp(1.0 - col.b) / e;
+ col = sqrt(col); // Linear -> SRGB
+ 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;
+ col = col * col; // SRGB -> Linear
+ col *= 1.8;
+ col.r = 1.0 - exp(1.0 - col.r) / e;
+ col.g = 1.0 - exp(1.0 - col.g) / e;
+ col.b = 1.0 - exp(1.0 - col.b) / e;
+ col = sqrt(col); // Linear -> SRGB
+ 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
+}
diff --git a/client/shaders/water_surface_shader/opengl_vertex.glsl b/client/shaders/water_surface_shader/opengl_vertex.glsl
new file mode 100644
index 000000000..b09d03774
--- /dev/null
+++ b/client/shaders/water_surface_shader/opengl_vertex.glsl
@@ -0,0 +1,135 @@
+uniform mat4 mWorldViewProj;
+uniform mat4 mInvWorld;
+uniform mat4 mTransWorld;
+uniform mat4 mWorld;
+
+uniform float dayNightRatio;
+uniform vec3 eyePosition;
+uniform float animationTimer;
+
+varying vec3 vPosition;
+varying vec3 worldPosition;
+
+varying vec3 eyeVec;
+varying vec3 lightVec;
+varying vec3 tsEyeVec;
+varying vec3 tsLightVec;
+
+const float e = 2.718281828459;
+const float BS = 10.0;
+
+float smoothCurve( float x ) {
+ return x * x *( 3.0 - 2.0 * x );
+}
+float triangleWave( float x ) {
+ return abs( fract( x + 0.5 ) * 2.0 - 1.0 );
+}
+float smoothTriangleWave( float x ) {
+ return smoothCurve( triangleWave( x ) ) * 2.0 - 1.0;
+}
+
+void main(void)
+{
+ gl_TexCoord[0] = gl_MultiTexCoord0;
+
+#if (MATERIAL_TYPE == TILE_MATERIAL_LIQUID_TRANSPARENT || MATERIAL_TYPE == TILE_MATERIAL_LIQUID_OPAQUE) && ENABLE_WAVING_WATER
+ vec4 pos = gl_Vertex;
+ pos.y -= 2.0;
+ pos.y -= sin (pos.z/WATER_WAVE_LENGTH + animationTimer * WATER_WAVE_SPEED * WATER_WAVE_LENGTH) * WATER_WAVE_HEIGHT
+ + sin ((pos.z/WATER_WAVE_LENGTH + animationTimer * WATER_WAVE_SPEED * WATER_WAVE_LENGTH) / 7.0) * WATER_WAVE_HEIGHT;
+ gl_Position = mWorldViewProj * pos;
+#elif MATERIAL_TYPE == TILE_MATERIAL_WAVING_LEAVES && ENABLE_WAVING_LEAVES
+ vec4 pos = gl_Vertex;
+ vec4 pos2 = mWorld * gl_Vertex;
+ pos.x += (smoothTriangleWave(animationTimer*10.0 + pos2.x * 0.01 + pos2.z * 0.01) * 2.0 - 1.0) * 0.4;
+ pos.y += (smoothTriangleWave(animationTimer*15.0 + pos2.x * -0.01 + pos2.z * -0.01) * 2.0 - 1.0) * 0.2;
+ pos.z += (smoothTriangleWave(animationTimer*10.0 + pos2.x * -0.01 + pos2.z * -0.01) * 2.0 - 1.0) * 0.4;
+ gl_Position = mWorldViewProj * pos;
+#elif MATERIAL_TYPE == TILE_MATERIAL_WAVING_PLANTS && ENABLE_WAVING_PLANTS
+ vec4 pos = gl_Vertex;
+ vec4 pos2 = mWorld * gl_Vertex;
+ if (gl_TexCoord[0].y < 0.05) {
+ pos.x += (smoothTriangleWave(animationTimer * 20.0 + pos2.x * 0.1 + pos2.z * 0.1) * 2.0 - 1.0) * 0.8;
+ pos.y -= (smoothTriangleWave(animationTimer * 10.0 + pos2.x * -0.5 + pos2.z * -0.5) * 2.0 - 1.0) * 0.4;
+ }
+ gl_Position = mWorldViewProj * pos;
+#else
+ gl_Position = mWorldViewProj * gl_Vertex;
+#endif
+
+ vPosition = gl_Position.xyz;
+ worldPosition = (mWorld * gl_Vertex).xyz;
+ vec3 sunPosition = vec3 (0.0, eyePosition.y * BS + 900.0, 0.0);
+
+ vec3 normal, tangent, binormal;
+ normal = normalize(gl_NormalMatrix * gl_Normal);
+ if (gl_Normal.x > 0.5) {
+ // 1.0, 0.0, 0.0
+ tangent = normalize(gl_NormalMatrix * vec3( 0.0, 0.0, -1.0));
+ binormal = normalize(gl_NormalMatrix * vec3( 0.0, -1.0, 0.0));
+ } else if (gl_Normal.x < -0.5) {
+ // -1.0, 0.0, 0.0
+ tangent = normalize(gl_NormalMatrix * vec3( 0.0, 0.0, 1.0));
+ binormal = normalize(gl_NormalMatrix * vec3( 0.0, -1.0, 0.0));
+ } else if (gl_Normal.y > 0.5) {
+ // 0.0, 1.0, 0.0
+ tangent = normalize(gl_NormalMatrix * vec3( 1.0, 0.0, 0.0));
+ binormal = normalize(gl_NormalMatrix * vec3( 0.0, 0.0, 1.0));
+ } else if (gl_Normal.y < -0.5) {
+ // 0.0, -1.0, 0.0
+ tangent = normalize(gl_NormalMatrix * vec3( 1.0, 0.0, 0.0));
+ binormal = normalize(gl_NormalMatrix * vec3( 0.0, 0.0, 1.0));
+ } else if (gl_Normal.z > 0.5) {
+ // 0.0, 0.0, 1.0
+ tangent = normalize(gl_NormalMatrix * vec3( 1.0, 0.0, 0.0));
+ binormal = normalize(gl_NormalMatrix * vec3( 0.0, -1.0, 0.0));
+ } else if (gl_Normal.z < -0.5) {
+ // 0.0, 0.0, -1.0
+ tangent = normalize(gl_NormalMatrix * vec3(-1.0, 0.0, 0.0));
+ binormal = normalize(gl_NormalMatrix * vec3( 0.0, -1.0, 0.0));
+ }
+ mat3 tbnMatrix = mat3( tangent.x, binormal.x, normal.x,
+ tangent.y, binormal.y, normal.y,
+ tangent.z, binormal.z, normal.z);
+
+ lightVec = sunPosition - worldPosition;
+ tsLightVec = lightVec * tbnMatrix;
+ eyeVec = (gl_ModelViewMatrix * gl_Vertex).xyz;
+ tsEyeVec = eyeVec * tbnMatrix;
+
+ vec4 color;
+ float day = gl_Color.r;
+ float night = gl_Color.g;
+ float light_source = gl_Color.b;
+
+ float rg = mix(night, day, dayNightRatio);
+ rg += light_source * 2.5; // Make light sources brighter
+ float b = rg;
+
+ // Moonlight is blue
+ b += (day - night) / 13.0;
+ rg -= (day - night) / 23.0;
+
+ // Emphase blue a bit in darker places
+ // See C++ implementation in mapblock_mesh.cpp finalColorBlend()
+ b += max(0.0, (1.0 - abs(b - 0.13)/0.17) * 0.025);
+
+ // Artificial light is yellow-ish
+ // See C++ implementation in mapblock_mesh.cpp finalColorBlend()
+ rg += max(0.0, (1.0 - abs(rg - 0.85)/0.15) * 0.065);
+
+ color.r = clamp(rg,0.0,1.0);
+ color.g = clamp(rg,0.0,1.0);
+ color.b = clamp(b,0.0,1.0);
+
+#if !(MATERIAL_TYPE == TILE_MATERIAL_LIQUID_TRANSPARENT || MATERIAL_TYPE == TILE_MATERIAL_LIQUID_OPAQUE)
+ // Make sides and bottom darker than the top
+ color = color * color; // SRGB -> Linear
+ if(gl_Normal.y <= 0.5)
+ color *= 0.6;
+ color = sqrt(color); // Linear -> SRGB
+#endif
+
+ color.a = gl_Color.a;
+ gl_FrontColor = gl_BackColor = color;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-13 01:22:01 +0000