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| author | RealBadAngel <mk@realbadangel.pl> | 2013-12-03 17:21:40 +0100 |
|---|---|---|
| committer | PilzAdam <pilzadam@minetest.net> | 2013-12-03 18:55:25 +0100 |
| commit | 2330267d2207208799ad347ea0d129c0b4551d61 (patch) | |
| tree | a4418b0c9fe42ee7944f0531c76f353069735615 /client/shaders/leaves_shader | |
| parent | 60113bde74784f4a0125ffa005e9404fbd5cb5b1 (diff) | |
| download | minetest-2330267d2207208799ad347ea0d129c0b4551d61.tar.gz minetest-2330267d2207208799ad347ea0d129c0b4551d61.tar.bz2 minetest-2330267d2207208799ad347ea0d129c0b4551d61.zip | |
Shaders rework.
Diffstat (limited to 'client/shaders/leaves_shader')
| -rw-r--r-- | client/shaders/leaves_shader/base.txt | 1 | ||||
| -rw-r--r-- | client/shaders/leaves_shader/opengl_fragment.glsl | 54 | ||||
| -rw-r--r-- | client/shaders/leaves_shader/opengl_vertex.glsl | 87 |
3 files changed, 142 insertions, 0 deletions
diff --git a/client/shaders/leaves_shader/base.txt b/client/shaders/leaves_shader/base.txt new file mode 100644 index 000000000..080df30dd --- /dev/null +++ b/client/shaders/leaves_shader/base.txt @@ -0,0 +1 @@ +trans_alphach_ref diff --git a/client/shaders/leaves_shader/opengl_fragment.glsl b/client/shaders/leaves_shader/opengl_fragment.glsl new file mode 100644 index 000000000..127b32d51 --- /dev/null +++ b/client/shaders/leaves_shader/opengl_fragment.glsl @@ -0,0 +1,54 @@ +#version 120
+
+uniform sampler2D baseTexture;
+uniform sampler2D normalTexture;
+uniform sampler2D useNormalmap;
+
+uniform float enableBumpmapping;
+
+uniform vec4 skyBgColor;
+uniform float fogDistance;
+uniform vec3 eyePosition;
+
+varying vec3 vPosition;
+varying vec3 eyeVec;
+varying vec4 vColor;
+
+const float e = 2.718281828459;
+
+void main (void)
+{
+ float use_normalmap = texture2D(useNormalmap,vec2(1.0,1.0)).r;
+ float enable_bumpmapping = enableBumpmapping;
+
+ vec3 color;
+ vec2 uv = gl_TexCoord[0].st;
+
+ if ((enable_bumpmapping == 1.0) && (use_normalmap > 0.0)) {
+ vec3 base = texture2D(baseTexture, uv).rgb;
+ vec3 vVec = normalize(eyeVec);
+ vec3 bump = normalize(texture2D(normalTexture, uv).xyz * 2.0 - 1.0);
+ vec3 R = reflect(-vVec, bump);
+ vec3 lVec = normalize(vVec);
+ float diffuse = max(dot(lVec, bump), 0.0);
+ float specular = pow(clamp(dot(R, lVec), 0.0, 1.0),1.0);
+ color = mix (base,diffuse*base,1.0) + 0.1 * specular * diffuse;
+ } else {
+ color = texture2D(baseTexture, uv).rgb;
+ }
+
+ float alpha = texture2D(baseTexture, uv).a;
+ vec4 col = vec4(color.r, color.g, color.b, 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));
+ col = mix(col, skyBgColor, d);
+ }
+ gl_FragColor = vec4(col.r, col.g, col.b, alpha);
+}
diff --git a/client/shaders/leaves_shader/opengl_vertex.glsl b/client/shaders/leaves_shader/opengl_vertex.glsl new file mode 100644 index 000000000..8dfb0669e --- /dev/null +++ b/client/shaders/leaves_shader/opengl_vertex.glsl @@ -0,0 +1,87 @@ +#version 120
+
+uniform mat4 mWorldViewProj;
+uniform mat4 mInvWorld;
+uniform mat4 mTransWorld;
+uniform float dayNightRatio;
+uniform float animationTimer;
+
+uniform float enableWavingLeaves;
+uniform vec3 eyePosition;
+
+varying vec3 vPosition;
+varying vec3 eyeVec;
+
+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 (enableWavingLeaves == 1.0){
+ vec4 pos = gl_Vertex;
+ vec4 pos2 = mTransWorld*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;
+ }
+ else
+ gl_Position = mWorldViewProj * gl_Vertex;
+
+ vPosition = (mWorldViewProj * gl_Vertex).xyz;
+
+ eyeVec = (gl_ModelViewMatrix * gl_Vertex).xyz;
+
+ vec4 color;
+ //color = vec4(1.0, 1.0, 1.0, 1.0);
+
+ float day = gl_Color.r;
+ float night = gl_Color.g;
+ float light_source = gl_Color.b;
+
+ /*color.r = mix(night, day, dayNightRatio);
+ color.g = color.r;
+ color.b = color.r;*/
+
+ 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) / 13.0;
+
+ // 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);
+
+ // Make sides and bottom darker than the top
+ color = color * color; // SRGB -> Linear
+ if(gl_Normal.y <= 0.5)
+ color *= 0.6;
+ //color *= 0.7;
+ color = sqrt(color); // Linear -> SRGB
+
+ color.a = gl_Color.a;
+
+ gl_FrontColor = gl_BackColor = color;
+
+ gl_TexCoord[0] = gl_MultiTexCoord0;
+
+}
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