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Unite nodes shaders.
Pass drawtype and material type to shaders. Move shaders generation to startup only. Allow assign shaders per tile. Initial code to support water surface shader.
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RealBadAngel
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22 changed files with 315 additions and 793 deletions
128
client/shaders/nodes_shader/opengl_fragment.glsl
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128
client/shaders/nodes_shader/opengl_fragment.glsl
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uniform sampler2D baseTexture;
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uniform sampler2D normalTexture;
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uniform sampler2D useNormalmap;
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uniform vec4 skyBgColor;
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uniform float fogDistance;
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uniform vec3 eyePosition;
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varying vec3 vPosition;
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varying vec3 worldPosition;
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varying vec3 eyeVec;
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varying vec3 tsEyeVec;
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varying vec3 lightVec;
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varying vec3 tsLightVec;
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bool normalTexturePresent = false;
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const float e = 2.718281828459;
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const float BS = 10.0;
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float intensity (vec3 color){
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return (color.r + color.g + color.b) / 3.0;
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}
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float get_rgb_height (vec2 uv){
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return intensity(texture2D(baseTexture,uv).rgb);
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}
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vec4 get_normal_map(vec2 uv){
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vec4 bump = texture2D(normalTexture, uv).rgba;
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bump.xyz = normalize(bump.xyz * 2.0 -1.0);
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bump.y = -bump.y;
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return bump;
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}
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void main (void)
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{
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vec3 color;
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vec4 bump;
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vec2 uv = gl_TexCoord[0].st;
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bool use_normalmap = false;
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#ifdef USE_NORMALMAPS
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if (texture2D(useNormalmap,vec2(1.0,1.0)).r > 0.0){
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normalTexturePresent = true;
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}
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#endif
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#ifdef ENABLE_PARALLAX_OCCLUSION
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if (normalTexturePresent){
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vec3 tsEye = normalize(tsEyeVec);
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float height = PARALLAX_OCCLUSION_SCALE * texture2D(normalTexture, uv).a - PARALLAX_OCCLUSION_BIAS;
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uv = uv + texture2D(normalTexture, uv).z * height * vec2(tsEye.x,-tsEye.y);
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}
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#endif
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#ifdef USE_NORMALMAPS
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if (normalTexturePresent){
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bump = get_normal_map(uv);
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use_normalmap = true;
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}
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#endif
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#ifdef GENERATE_NORMALMAPS
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if (use_normalmap == false){
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float tl = get_rgb_height (vec2(uv.x-SAMPLE_STEP,uv.y+SAMPLE_STEP));
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float t = get_rgb_height (vec2(uv.x-SAMPLE_STEP,uv.y-SAMPLE_STEP));
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float tr = get_rgb_height (vec2(uv.x+SAMPLE_STEP,uv.y+SAMPLE_STEP));
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float r = get_rgb_height (vec2(uv.x+SAMPLE_STEP,uv.y));
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float br = get_rgb_height (vec2(uv.x+SAMPLE_STEP,uv.y-SAMPLE_STEP));
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float b = get_rgb_height (vec2(uv.x,uv.y-SAMPLE_STEP));
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float bl = get_rgb_height (vec2(uv.x-SAMPLE_STEP,uv.y-SAMPLE_STEP));
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float l = get_rgb_height (vec2(uv.x-SAMPLE_STEP,uv.y));
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float dX = (tr + 2.0 * r + br) - (tl + 2.0 * l + bl);
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float dY = (bl + 2.0 * b + br) - (tl + 2.0 * t + tr);
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bump = vec4 (normalize(vec3 (dX, -dY, NORMALMAPS_STRENGTH)),1.0);
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use_normalmap = true;
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}
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#endif
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vec4 base = texture2D(baseTexture, uv).rgba;
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#ifdef ENABLE_BUMPMAPPING
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if (use_normalmap){
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vec3 L = normalize(lightVec);
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vec3 E = normalize(eyeVec);
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float specular = pow(clamp(dot(reflect(L, bump.xyz), E), 0.0, 1.0),0.5);
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float diffuse = dot(E,bump.xyz);
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color = 0.05*base.rgb + diffuse*base.rgb + 0.2*specular*base.rgb;
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} else {
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color = base.rgb;
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}
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#else
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color = base.rgb;
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#endif
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#if MATERIAL_TYPE == TILE_MATERIAL_LIQUID_TRANSPARENT || MATERIAL_TYPE == TILE_MATERIAL_LIQUID_OPAQUE
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float alpha = gl_Color.a;
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vec4 col = vec4(color.rgb, alpha);
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col *= gl_Color;
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col = col * col; // SRGB -> Linear
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col *= 1.8;
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col.r = 1.0 - exp(1.0 - col.r) / e;
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col.g = 1.0 - exp(1.0 - col.g) / e;
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col.b = 1.0 - exp(1.0 - col.b) / e;
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col = sqrt(col); // Linear -> SRGB
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if(fogDistance != 0.0){
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float d = max(0.0, min(vPosition.z / fogDistance * 1.5 - 0.6, 1.0));
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alpha = mix(alpha, 0.0, d);
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}
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gl_FragColor = vec4(col.rgb, alpha);
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#else
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vec4 col = vec4(color.rgb, base.a);
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col *= gl_Color;
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col = col * col; // SRGB -> Linear
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col *= 1.8;
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col.r = 1.0 - exp(1.0 - col.r) / e;
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col.g = 1.0 - exp(1.0 - col.g) / e;
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col.b = 1.0 - exp(1.0 - col.b) / e;
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col = sqrt(col); // Linear -> SRGB
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if(fogDistance != 0.0){
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float d = max(0.0, min(vPosition.z / fogDistance * 1.5 - 0.6, 1.0));
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col = mix(col, skyBgColor, d);
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}
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gl_FragColor = vec4(col.rgb, base.a);
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#endif
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}
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135
client/shaders/nodes_shader/opengl_vertex.glsl
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135
client/shaders/nodes_shader/opengl_vertex.glsl
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uniform mat4 mWorldViewProj;
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uniform mat4 mInvWorld;
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uniform mat4 mTransWorld;
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uniform mat4 mWorld;
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uniform float dayNightRatio;
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uniform vec3 eyePosition;
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uniform float animationTimer;
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varying vec3 vPosition;
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varying vec3 worldPosition;
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varying vec3 eyeVec;
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varying vec3 lightVec;
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varying vec3 tsEyeVec;
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varying vec3 tsLightVec;
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const float e = 2.718281828459;
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const float BS = 10.0;
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float smoothCurve( float x ) {
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return x * x *( 3.0 - 2.0 * x );
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}
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float triangleWave( float x ) {
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return abs( fract( x + 0.5 ) * 2.0 - 1.0 );
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}
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float smoothTriangleWave( float x ) {
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return smoothCurve( triangleWave( x ) ) * 2.0 - 1.0;
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}
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void main(void)
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{
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gl_TexCoord[0] = gl_MultiTexCoord0;
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#if (MATERIAL_TYPE == TILE_MATERIAL_LIQUID_TRANSPARENT || MATERIAL_TYPE == TILE_MATERIAL_LIQUID_OPAQUE) && ENABLE_WAVING_WATER
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vec4 pos = gl_Vertex;
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pos.y -= 2.0;
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pos.y -= sin (pos.z/WATER_WAVE_LENGTH + animationTimer * WATER_WAVE_SPEED * WATER_WAVE_LENGTH) * WATER_WAVE_HEIGHT
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+ sin ((pos.z/WATER_WAVE_LENGTH + animationTimer * WATER_WAVE_SPEED * WATER_WAVE_LENGTH) / 7.0) * WATER_WAVE_HEIGHT;
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gl_Position = mWorldViewProj * pos;
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#elif MATERIAL_TYPE == TILE_MATERIAL_WAVING_LEAVES && ENABLE_WAVING_LEAVES
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vec4 pos = gl_Vertex;
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vec4 pos2 = mWorld * gl_Vertex;
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pos.x += (smoothTriangleWave(animationTimer*10.0 + pos2.x * 0.01 + pos2.z * 0.01) * 2.0 - 1.0) * 0.4;
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pos.y += (smoothTriangleWave(animationTimer*15.0 + pos2.x * -0.01 + pos2.z * -0.01) * 2.0 - 1.0) * 0.2;
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pos.z += (smoothTriangleWave(animationTimer*10.0 + pos2.x * -0.01 + pos2.z * -0.01) * 2.0 - 1.0) * 0.4;
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gl_Position = mWorldViewProj * pos;
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#elif MATERIAL_TYPE == TILE_MATERIAL_WAVING_PLANTS && ENABLE_WAVING_PLANTS
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vec4 pos = gl_Vertex;
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vec4 pos2 = mWorld * gl_Vertex;
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if (gl_TexCoord[0].y < 0.05) {
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pos.x += (smoothTriangleWave(animationTimer * 20.0 + pos2.x * 0.1 + pos2.z * 0.1) * 2.0 - 1.0) * 0.8;
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pos.y -= (smoothTriangleWave(animationTimer * 10.0 + pos2.x * -0.5 + pos2.z * -0.5) * 2.0 - 1.0) * 0.4;
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}
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gl_Position = mWorldViewProj * pos;
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#else
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gl_Position = mWorldViewProj * gl_Vertex;
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#endif
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vPosition = gl_Position.xyz;
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worldPosition = (mWorld * gl_Vertex).xyz;
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vec3 sunPosition = vec3 (0.0, eyePosition.y * BS + 900.0, 0.0);
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vec3 normal, tangent, binormal;
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normal = normalize(gl_NormalMatrix * gl_Normal);
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if (gl_Normal.x > 0.5) {
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// 1.0, 0.0, 0.0
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tangent = normalize(gl_NormalMatrix * vec3( 0.0, 0.0, -1.0));
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binormal = normalize(gl_NormalMatrix * vec3( 0.0, -1.0, 0.0));
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} else if (gl_Normal.x < -0.5) {
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// -1.0, 0.0, 0.0
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tangent = normalize(gl_NormalMatrix * vec3( 0.0, 0.0, 1.0));
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binormal = normalize(gl_NormalMatrix * vec3( 0.0, -1.0, 0.0));
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} else if (gl_Normal.y > 0.5) {
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// 0.0, 1.0, 0.0
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tangent = normalize(gl_NormalMatrix * vec3( 1.0, 0.0, 0.0));
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binormal = normalize(gl_NormalMatrix * vec3( 0.0, 0.0, 1.0));
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} else if (gl_Normal.y < -0.5) {
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// 0.0, -1.0, 0.0
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tangent = normalize(gl_NormalMatrix * vec3( 1.0, 0.0, 0.0));
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binormal = normalize(gl_NormalMatrix * vec3( 0.0, 0.0, 1.0));
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} else if (gl_Normal.z > 0.5) {
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// 0.0, 0.0, 1.0
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tangent = normalize(gl_NormalMatrix * vec3( 1.0, 0.0, 0.0));
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binormal = normalize(gl_NormalMatrix * vec3( 0.0, -1.0, 0.0));
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} else if (gl_Normal.z < -0.5) {
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// 0.0, 0.0, -1.0
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tangent = normalize(gl_NormalMatrix * vec3(-1.0, 0.0, 0.0));
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binormal = normalize(gl_NormalMatrix * vec3( 0.0, -1.0, 0.0));
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}
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mat3 tbnMatrix = mat3( tangent.x, binormal.x, normal.x,
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tangent.y, binormal.y, normal.y,
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tangent.z, binormal.z, normal.z);
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lightVec = sunPosition - worldPosition;
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tsLightVec = lightVec * tbnMatrix;
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eyeVec = (gl_ModelViewMatrix * gl_Vertex).xyz;
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tsEyeVec = eyeVec * tbnMatrix;
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vec4 color;
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float day = gl_Color.r;
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float night = gl_Color.g;
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float light_source = gl_Color.b;
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float rg = mix(night, day, dayNightRatio);
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rg += light_source * 2.5; // Make light sources brighter
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float b = rg;
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// Moonlight is blue
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b += (day - night) / 13.0;
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rg -= (day - night) / 23.0;
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// Emphase blue a bit in darker places
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// See C++ implementation in mapblock_mesh.cpp finalColorBlend()
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b += max(0.0, (1.0 - abs(b - 0.13)/0.17) * 0.025);
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// Artificial light is yellow-ish
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// See C++ implementation in mapblock_mesh.cpp finalColorBlend()
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rg += max(0.0, (1.0 - abs(rg - 0.85)/0.15) * 0.065);
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color.r = clamp(rg,0.0,1.0);
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color.g = clamp(rg,0.0,1.0);
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color.b = clamp(b,0.0,1.0);
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#if !(MATERIAL_TYPE == TILE_MATERIAL_LIQUID_TRANSPARENT || MATERIAL_TYPE == TILE_MATERIAL_LIQUID_OPAQUE)
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// Make sides and bottom darker than the top
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color = color * color; // SRGB -> Linear
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if(gl_Normal.y <= 0.5)
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color *= 0.6;
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color = sqrt(color); // Linear -> SRGB
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#endif
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color.a = gl_Color.a;
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gl_FrontColor = gl_BackColor = color;
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}
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