From 6c98fd6658fcf7c0c676ee88f03e364c852e9f1b Mon Sep 17 00:00:00 2001 From: RealBadAngel Date: Wed, 14 May 2014 23:19:31 +0200 Subject: 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. --- client/shaders/nodes_shader/opengl_fragment.glsl | 128 +++++++++++++++++++++ client/shaders/nodes_shader/opengl_vertex.glsl | 135 +++++++++++++++++++++++ 2 files changed, 263 insertions(+) create mode 100644 client/shaders/nodes_shader/opengl_fragment.glsl create mode 100644 client/shaders/nodes_shader/opengl_vertex.glsl (limited to 'client/shaders/nodes_shader') diff --git a/client/shaders/nodes_shader/opengl_fragment.glsl b/client/shaders/nodes_shader/opengl_fragment.glsl new file mode 100644 index 000000000..351faf81b --- /dev/null +++ b/client/shaders/nodes_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/nodes_shader/opengl_vertex.glsl b/client/shaders/nodes_shader/opengl_vertex.glsl new file mode 100644 index 000000000..b09d03774 --- /dev/null +++ b/client/shaders/nodes_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; +} -- cgit v1.2.3