Nodes shader: Decrease amplitude of waving leaves and plants

Fix initialisation of variable 'disp'
Fix a few minor code style issues
Add independent X motion combining 2 prime frequencies

diff --git a/client/shaders/nodes_shader/opengl_vertex.glsl b/client/shaders/nodes_shader/opengl_vertex.glsl
index ff271d0e1ed7b0069140f8f333d6977553937134..28c5f197ef9dfcd8731321b5d4689e507e47cfea 100644 (file)
--- a/client/shaders/nodes_shader/opengl_vertex.glsl
+++ b/client/shaders/nodes_shader/opengl_vertex.glsl
@@ -15,7 +15,6 @@ varying vec3 lightVec;
 varying vec3 tsEyeVec;
 varying vec3 tsLightVec;
 varying float area_enable_parallax;
-varying float disp;
 
 const float e = 2.718281828459;
 const float BS = 10.0;
@@ -55,12 +54,16 @@ void main(void)
 #endif
 
 
+float disp_x;
+float disp_z;
 #if (MATERIAL_TYPE == TILE_MATERIAL_WAVING_LEAVES && ENABLE_WAVING_LEAVES) || (MATERIAL_TYPE == TILE_MATERIAL_WAVING_PLANTS && ENABLE_WAVING_PLANTS)
        vec4 pos2 = mWorld * gl_Vertex;
        float tOffset = (pos2.x + pos2.y) * 0.001 + pos2.z * 0.002;
-       disp = (smoothTriangleWave(animationTimer * 31.0 + tOffset) +
+       disp_x = (smoothTriangleWave(animationTimer * 23.0 + tOffset) +
+               smoothTriangleWave(animationTimer * 11.0 + tOffset)) * 0.4;
+       disp_z = (smoothTriangleWave(animationTimer * 31.0 + tOffset) +
                smoothTriangleWave(animationTimer * 29.0 + tOffset) +
-               smoothTriangleWave(animationTimer * 13.0 + tOffset)) - 0.9;
+               smoothTriangleWave(animationTimer * 13.0 + tOffset)) * 0.5;
 #endif
 
 
@@ -72,14 +75,15 @@ void main(void)
        gl_Position = mWorldViewProj * pos;
 #elif MATERIAL_TYPE == TILE_MATERIAL_WAVING_LEAVES && ENABLE_WAVING_LEAVES
        vec4 pos = gl_Vertex;
-       pos.x += disp * 0.1;
-       pos.y += disp * 0.1;
-       pos.z += disp;
+       pos.x += disp_x;
+       pos.y += disp_z * 0.1;
+       pos.z += disp_z;
        gl_Position = mWorldViewProj * pos;
 #elif MATERIAL_TYPE == TILE_MATERIAL_WAVING_PLANTS && ENABLE_WAVING_PLANTS
        vec4 pos = gl_Vertex;
        if (gl_TexCoord[0].y < 0.05) {
-               pos.z += disp;
+               pos.x += disp_x;
+               pos.z += disp_z;
        }
        gl_Position = mWorldViewProj * pos;
 #else
@@ -91,7 +95,7 @@ void main(void)
        worldPosition = (mWorld * gl_Vertex).xyz;
 
        // Don't generate heightmaps when too far from the eye
-       float dist = distance (vec3(0.0, 0.0 ,0.0), vPosition);
+       float dist = distance (vec3(0.0, 0.0, 0.0), vPosition);
        if (dist > 150.0) {
                area_enable_parallax = 0.0;
        }
@@ -132,16 +136,16 @@ void main(void)
 
        // 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);
+       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);
+       rg += max(0.0, (1.0 - abs(rg - 0.85) / 0.15) * 0.065);
 
        color.r = rg;
        color.g = rg;
        color.b = b;
 
        color.a = gl_Color.a;
-       gl_FrontColor = gl_BackColor = clamp(color,0.0,1.0);
+       gl_FrontColor = gl_BackColor = clamp(color, 0.0, 1.0);
 }