diff --git a/files/materials/clouds.shader b/files/materials/clouds.shader index 90c4d0f84..93d0780e0 100644 --- a/files/materials/clouds.shader +++ b/files/materials/clouds.shader @@ -47,7 +47,7 @@ // Scroll in y direction float2 scrolledUV = UV + float2(0,1) * cloudAnimationTimer * 0.003; - float4 albedo = shSample(diffuseMap1, scrolledUV) * (1-cloudBlendFactor) + shSample(diffuseMap2, scrolledUV) * cloudBlendFactor; + float4 albedo = shSample(diffuseMap1, scrolledUV) * (1.0-cloudBlendFactor) + shSample(diffuseMap2, scrolledUV) * cloudBlendFactor; shOutputColour(0) = float4(cloudColour, 1) * albedo * float4(1,1,1, cloudOpacity * alphaFade); } diff --git a/files/materials/moon.shader b/files/materials/moon.shader index d369a1c68..eb7243d3f 100644 --- a/files/materials/moon.shader +++ b/files/materials/moon.shader @@ -45,8 +45,8 @@ shUniform(float4x4, projection) @shAutoConstant(projection, projection_matrix) shOutputColour(0).a = shSample(alphaMap, UV).a * materialDiffuse.a; - shOutputColour(0).rgb += (1-tex.a) * shOutputColour(0).a * atmosphereColour.rgb; //fill dark side of moon with atmosphereColour - shOutputColour(0).rgb += (1-materialDiffuse.a) * atmosphereColour.rgb; //fade bump + shOutputColour(0).rgb += (1.0-tex.a) * shOutputColour(0).a * atmosphereColour.rgb; //fill dark side of moon with atmosphereColour + shOutputColour(0).rgb += (1.0-materialDiffuse.a) * atmosphereColour.rgb; //fade bump } diff --git a/files/materials/shadowcaster.shader b/files/materials/shadowcaster.shader index b992366a7..8f7911553 100644 --- a/files/materials/shadowcaster.shader +++ b/files/materials/shadowcaster.shader @@ -1,55 +1,55 @@ -#include "core.h" - -#define ALPHA @shPropertyBool(shadow_transparency) - -#ifdef SH_VERTEX_SHADER - - SH_BEGIN_PROGRAM -#if ALPHA - shVertexInput(float2, uv0) - shOutput(float2, UV) -#endif - shUniform(float4x4, wvp) @shAutoConstant(wvp, worldviewproj_matrix) - shOutput(float2, depth) - SH_START_PROGRAM - { - // this is the view space position - shOutputPosition = shMatrixMult(wvp, shInputPosition); - - // depth info for the fragment. - depth.x = shOutputPosition.z; - depth.y = shOutputPosition.w; - - // clamp z to zero. seem to do the trick. :-/ - shOutputPosition.z = max(shOutputPosition.z, 0); - -#if ALPHA - UV = uv0; -#endif - } - -#else - - SH_BEGIN_PROGRAM -#if ALPHA - shInput(float2, UV) - shSampler2D(texture1) -#endif - shInput(float2, depth) - SH_START_PROGRAM - { - float finalDepth = depth.x / depth.y; - - -#if ALPHA - // use alpha channel of the first texture - float alpha = shSample(texture1, UV).a; - - if (alpha < 0.5) - discard; -#endif - - shOutputColour(0) = float4(finalDepth, finalDepth, finalDepth, 1); - } - -#endif +#include "core.h" + +#define ALPHA @shPropertyBool(shadow_transparency) + +#ifdef SH_VERTEX_SHADER + + SH_BEGIN_PROGRAM +#if ALPHA + shVertexInput(float2, uv0) + shOutput(float2, UV) +#endif + shUniform(float4x4, wvp) @shAutoConstant(wvp, worldviewproj_matrix) + shOutput(float2, depth) + SH_START_PROGRAM + { + // this is the view space position + shOutputPosition = shMatrixMult(wvp, shInputPosition); + + // depth info for the fragment. + depth.x = shOutputPosition.z; + depth.y = shOutputPosition.w; + + // clamp z to zero. seem to do the trick. :-/ + shOutputPosition.z = max(shOutputPosition.z, 0.0); + +#if ALPHA + UV = uv0; +#endif + } + +#else + + SH_BEGIN_PROGRAM +#if ALPHA + shInput(float2, UV) + shSampler2D(texture1) +#endif + shInput(float2, depth) + SH_START_PROGRAM + { + float finalDepth = depth.x / depth.y; + + +#if ALPHA + // use alpha channel of the first texture + float alpha = shSample(texture1, UV).a; + + if (alpha < 0.5) + discard; +#endif + + shOutputColour(0) = float4(finalDepth, finalDepth, finalDepth, 1.0); + } + +#endif diff --git a/files/materials/stars.shader b/files/materials/stars.shader index b84d37135..f2eb616a2 100644 --- a/files/materials/stars.shader +++ b/files/materials/stars.shader @@ -1,48 +1,48 @@ -#include "core.h" - -#ifdef SH_VERTEX_SHADER - - SH_BEGIN_PROGRAM - shUniform(float4x4, worldview) @shAutoConstant(worldview, worldview_matrix) - shUniform(float4x4, proj) @shAutoConstant(proj, projection_matrix) - - shVertexInput(float2, uv0) - shOutput(float2, UV) - shOutput(float, fade) - - SH_START_PROGRAM - { - float4x4 worldviewFixed = worldview; -#if !SH_GLSL - worldviewFixed[0][3] = 0; - worldviewFixed[1][3] = 0; - worldviewFixed[2][3] = 0; -#else - worldviewFixed[3][0] = 0; - worldviewFixed[3][1] = 0; - worldviewFixed[3][2] = 0; -#endif - - shOutputPosition = shMatrixMult(proj, shMatrixMult(worldviewFixed, shInputPosition)); - UV = uv0; - - fade = (shInputPosition.z > 50) ? 1 : 0; - } - -#else - - SH_BEGIN_PROGRAM - - shInput(float2, UV) - shInput(float, fade) - - shSampler2D(diffuseMap) - shUniform(float, nightFade) @shSharedParameter(nightFade) - - - SH_START_PROGRAM - { - shOutputColour(0) = shSample(diffuseMap, UV) * float4(1,1,1, nightFade * fade); - } - -#endif +#include "core.h" + +#ifdef SH_VERTEX_SHADER + + SH_BEGIN_PROGRAM + shUniform(float4x4, worldview) @shAutoConstant(worldview, worldview_matrix) + shUniform(float4x4, proj) @shAutoConstant(proj, projection_matrix) + + shVertexInput(float2, uv0) + shOutput(float2, UV) + shOutput(float, fade) + + SH_START_PROGRAM + { + float4x4 worldviewFixed = worldview; +#if !SH_GLSL + worldviewFixed[0][3] = 0.0; + worldviewFixed[1][3] = 0.0; + worldviewFixed[2][3] = 0.0; +#else + worldviewFixed[3][0] = 0.0; + worldviewFixed[3][1] = 0.0; + worldviewFixed[3][2] = 0.0; +#endif + + shOutputPosition = shMatrixMult(proj, shMatrixMult(worldviewFixed, shInputPosition)); + UV = uv0; + + fade = (shInputPosition.z > 50.0) ? 1.0 : 0.0; + } + +#else + + SH_BEGIN_PROGRAM + + shInput(float2, UV) + shInput(float, fade) + + shSampler2D(diffuseMap) + shUniform(float, nightFade) @shSharedParameter(nightFade) + + + SH_START_PROGRAM + { + shOutputColour(0) = shSample(diffuseMap, UV) * float4(1,1,1, nightFade * fade); + } + +#endif diff --git a/files/materials/water.shader b/files/materials/water.shader index 418b13715..a6f49e0a1 100644 --- a/files/materials/water.shader +++ b/files/materials/water.shader @@ -1,370 +1,370 @@ -#include "core.h" - - -#define SIMPLE_WATER @shGlobalSettingBool(simple_water) - -#if SIMPLE_WATER - // --------------------------------------- SIMPLE WATER --------------------------------------------------- - -#define FOG @shGlobalSettingBool(fog) - -#ifdef SH_VERTEX_SHADER - - SH_BEGIN_PROGRAM - shUniform(float4x4, wvp) @shAutoConstant(wvp, worldviewproj_matrix) - shVertexInput(float2, uv0) - shOutput(float2, UV) - -#if FOG - shOutput(float, depth) -#endif - SH_START_PROGRAM - { - shOutputPosition = shMatrixMult(wvp, shInputPosition); - UV = uv0; -#if FOG - depth = shOutputPosition.z; -#endif - } - -#else - - SH_BEGIN_PROGRAM - shSampler2D(animatedTexture) - shInput(float2, UV) - shInput(float, depth) - - shUniform(float3, fogColor) @shAutoConstant(fogColor, fog_colour) - shUniform(float4, fogParams) @shAutoConstant(fogParams, fog_params) - - - SH_START_PROGRAM - { - shOutputColour(0).xyz = shSample(animatedTexture, UV * float2(15.0, 15.0)).xyz * float3(1.0, 1.0, 1.0); - shOutputColour(0).w = 0.7; - -#if FOG - float fogValue = shSaturate((depth - fogParams.y) * fogParams.w); - shOutputColour(0).xyz = shLerp (shOutputColour(0).xyz, fogColor, fogValue); -#endif - } - -#endif - -#else - - - -// Inspired by Blender GLSL Water by martinsh ( http://devlog-martinsh.blogspot.de/2012/07/waterundewater-shader-wip.html ) - -#define SHADOWS_PSSM @shGlobalSettingBool(shadows_pssm) -#define SHADOWS @shGlobalSettingBool(shadows) - -#if SHADOWS || SHADOWS_PSSM - #include "shadows.h" -#endif - -#define RIPPLES 1 -#define REFRACTION @shGlobalSettingBool(refraction) - -#ifdef SH_VERTEX_SHADER - - SH_BEGIN_PROGRAM - shUniform(float4x4, wvp) @shAutoConstant(wvp, worldviewproj_matrix) - shVertexInput(float2, uv0) - shOutput(float2, UV) - - shOutput(float3, screenCoordsPassthrough) - shOutput(float4, position) - shOutput(float, depthPassthrough) - - -#if SHADOWS - shOutput(float4, lightSpacePos0) - shUniform(float4x4, texViewProjMatrix0) @shAutoConstant(texViewProjMatrix0, texture_viewproj_matrix) -#endif - -#if SHADOWS_PSSM - @shForeach(3) - shOutput(float4, lightSpacePos@shIterator) - shUniform(float4x4, texViewProjMatrix@shIterator) @shAutoConstant(texViewProjMatrix@shIterator, texture_viewproj_matrix, @shIterator) - @shEndForeach -#endif - -#if SHADOWS || SHADOWS_PSSM - shUniform(float4x4, worldMatrix) @shAutoConstant(worldMatrix, world_matrix) -#endif - - SH_START_PROGRAM - { - shOutputPosition = shMatrixMult(wvp, shInputPosition); - UV = uv0; - - - #if !SH_GLSL - float4x4 scalemat = float4x4( 0.5, 0, 0, 0.5, - 0, -0.5, 0, 0.5, - 0, 0, 0.5, 0.5, - 0, 0, 0, 1 ); - #else - mat4 scalemat = mat4(0.5, 0.0, 0.0, 0.0, - 0.0, -0.5, 0.0, 0.0, - 0.0, 0.0, 0.5, 0.0, - 0.5, 0.5, 0.5, 1.0); - #endif - - float4 texcoordProj = shMatrixMult(scalemat, shOutputPosition); - screenCoordsPassthrough = float3(texcoordProj.x, texcoordProj.y, texcoordProj.w); - - position = shInputPosition; - - depthPassthrough = shOutputPosition.z; - - -#if SHADOWS - lightSpacePos0 = shMatrixMult(texViewProjMatrix0, shMatrixMult(worldMatrix, shInputPosition)); -#endif -#if SHADOWS_PSSM - float4 wPos = shMatrixMult(worldMatrix, shInputPosition); - @shForeach(3) - lightSpacePos@shIterator = shMatrixMult(texViewProjMatrix@shIterator, wPos); - @shEndForeach -#endif - } - -#else - - // tweakables ---------------------------------------------------- - - #define VISIBILITY 1500.0 // how far you can look through water - - #define BIG_WAVES_X 0.3 // strength of big waves - #define BIG_WAVES_Y 0.3 - - #define MID_WAVES_X 0.3 // strength of middle sized waves - #define MID_WAVES_Y 0.15 - - #define SMALL_WAVES_X 0.15 // strength of small waves - #define SMALL_WAVES_Y 0.1 - - #define WAVE_CHOPPYNESS 0.15 // wave choppyness - #define WAVE_SCALE 75 // overall wave scale - - #define BUMP 1.5 // overall water surface bumpiness - #define REFL_BUMP 0.08 // reflection distortion amount - #define REFR_BUMP 0.06 // refraction distortion amount - - #define SCATTER_AMOUNT 0.3 // amount of sunlight scattering - #define SCATTER_COLOUR float3(0.0,1.0,0.95) // colour of sunlight scattering - - #define SUN_EXT float3(0.45, 0.55, 0.68) //sunlight extinction - - #define SPEC_HARDNESS 256 // specular highlights hardness - - - // --------------------------------------------------------------- - - - - float fresnel_dielectric(float3 Incoming, float3 Normal, float eta) - { - /* compute fresnel reflectance without explicitly computing - the refracted direction */ - float c = abs(dot(Incoming, Normal)); - float g = eta * eta - 1.0 + c * c; - float result; - - if(g > 0.0) { - g = sqrt(g); - float A =(g - c)/(g + c); - float B =(c *(g + c)- 1.0)/(c *(g - c)+ 1.0); - result = 0.5 * A * A *(1.0 + B * B); - } - else - result = 1.0; /* TIR (no refracted component) */ - - return result; - } - - SH_BEGIN_PROGRAM - shInput(float2, UV) - shInput(float3, screenCoordsPassthrough) - shInput(float4, position) - shInput(float, depthPassthrough) - - #if RIPPLES - shUniform(float3, rippleCenter) @shSharedParameter(rippleCenter, rippleCenter) - shUniform(float, rippleAreaLength) @shSharedParameter(rippleAreaLength, rippleAreaLength) - #endif - - shUniform(float, far) @shAutoConstant(far, far_clip_distance) - - shSampler2D(reflectionMap) -#if REFRACTION - shSampler2D(refractionMap) -#endif - shSampler2D(depthMap) - shSampler2D(normalMap) - - #if RIPPLES - shSampler2D(rippleNormalMap) - shUniform(float4x4, wMat) @shAutoConstant(wMat, world_matrix) - #endif - - shUniform(float3, windDir_windSpeed) @shSharedParameter(windDir_windSpeed) - #define WIND_SPEED windDir_windSpeed.z - #define WIND_DIR windDir_windSpeed.xy - - shUniform(float, waterTimer) @shSharedParameter(waterTimer) - shUniform(float2, waterSunFade_sunHeight) @shSharedParameter(waterSunFade_sunHeight) - - shUniform(float4, sunPosition) @shAutoConstant(sunPosition, light_position, 0) - shUniform(float4, sunSpecular) @shAutoConstant(sunSpecular, light_specular_colour, 0) - - shUniform(float, renderTargetFlipping) @shAutoConstant(renderTargetFlipping, render_target_flipping) - - - shUniform(float3, fogColor) @shAutoConstant(fogColor, fog_colour) - shUniform(float4, fogParams) @shAutoConstant(fogParams, fog_params) - - shUniform(float4, cameraPos) @shAutoConstant(cameraPos, camera_position_object_space) - - -#if SHADOWS - shInput(float4, lightSpacePos0) - shSampler2D(shadowMap0) - shUniform(float2, invShadowmapSize0) @shAutoConstant(invShadowmapSize0, inverse_texture_size, 1) -#endif -#if SHADOWS_PSSM - @shForeach(3) - shInput(float4, lightSpacePos@shIterator) - shSampler2D(shadowMap@shIterator) - shUniform(float2, invShadowmapSize@shIterator) @shAutoConstant(invShadowmapSize@shIterator, inverse_texture_size, @shIterator(1)) - @shEndForeach - shUniform(float3, pssmSplitPoints) @shSharedParameter(pssmSplitPoints) -#endif - -#if SHADOWS || SHADOWS_PSSM - shUniform(float4, shadowFar_fadeStart) @shSharedParameter(shadowFar_fadeStart) -#endif - - - SH_START_PROGRAM - { -#if SHADOWS - float shadow = depthShadowPCF (shadowMap0, lightSpacePos0, invShadowmapSize0); -#endif -#if SHADOWS_PSSM - float shadow = pssmDepthShadow (lightSpacePos0, invShadowmapSize0, shadowMap0, lightSpacePos1, invShadowmapSize1, shadowMap1, lightSpacePos2, invShadowmapSize2, shadowMap2, depthPassthrough, pssmSplitPoints); -#endif - -#if SHADOWS || SHADOWS_PSSM - float fadeRange = shadowFar_fadeStart.x - shadowFar_fadeStart.y; - float fade = 1-((depthPassthrough - shadowFar_fadeStart.y) / fadeRange); - shadow = (depthPassthrough > shadowFar_fadeStart.x) ? 1.0 : ((depthPassthrough > shadowFar_fadeStart.y) ? 1.0-((1.0-shadow)*fade) : shadow); -#endif - -#if !SHADOWS && !SHADOWS_PSSM - float shadow = 1.0; -#endif - - - float2 screenCoords = screenCoordsPassthrough.xy / screenCoordsPassthrough.z; - screenCoords.y = (1-shSaturate(renderTargetFlipping))+renderTargetFlipping*screenCoords.y; - - float2 nCoord = float2(0,0); - - nCoord = UV * (WAVE_SCALE * 0.05) + WIND_DIR * waterTimer * (WIND_SPEED*0.04); - float3 normal0 = 2.0 * shSample(normalMap, nCoord + float2(-waterTimer*0.015,-waterTimer*0.005)).rgb - 1.0; - nCoord = UV * (WAVE_SCALE * 0.1) + WIND_DIR * waterTimer * (WIND_SPEED*0.08)-(normal0.xy/normal0.zz)*WAVE_CHOPPYNESS; - float3 normal1 = 2.0 * shSample(normalMap, nCoord + float2(+waterTimer*0.020,+waterTimer*0.015)).rgb - 1.0; - - nCoord = UV * (WAVE_SCALE * 0.25) + WIND_DIR * waterTimer * (WIND_SPEED*0.07)-(normal1.xy/normal1.zz)*WAVE_CHOPPYNESS; - float3 normal2 = 2.0 * shSample(normalMap, nCoord + float2(-waterTimer*0.04,-waterTimer*0.03)).rgb - 1.0; - nCoord = UV * (WAVE_SCALE * 0.5) + WIND_DIR * waterTimer * (WIND_SPEED*0.09)-(normal2.xy/normal2.z)*WAVE_CHOPPYNESS; - float3 normal3 = 2.0 * shSample(normalMap, nCoord + float2(+waterTimer*0.03,+waterTimer*0.04)).rgb - 1.0; - - nCoord = UV * (WAVE_SCALE* 1.0) + WIND_DIR * waterTimer * (WIND_SPEED*0.4)-(normal3.xy/normal3.zz)*WAVE_CHOPPYNESS; - float3 normal4 = 2.0 * shSample(normalMap, nCoord + float2(-waterTimer*0.02,+waterTimer*0.1)).rgb - 1.0; - nCoord = UV * (WAVE_SCALE * 2.0) + WIND_DIR * waterTimer * (WIND_SPEED*0.7)-(normal4.xy/normal4.zz)*WAVE_CHOPPYNESS; - float3 normal5 = 2.0 * shSample(normalMap, nCoord + float2(+waterTimer*0.1,-waterTimer*0.06)).rgb - 1.0; - - - - float3 normal = (normal0 * BIG_WAVES_X + normal1 * BIG_WAVES_Y + - normal2 * MID_WAVES_X + normal3 * MID_WAVES_Y + - normal4 * SMALL_WAVES_X + normal5 * SMALL_WAVES_Y); - - float4 worldPosition = shMatrixMult(wMat, float4(position.xyz, 1)); - float2 relPos = (worldPosition.xy - rippleCenter.xy) / rippleAreaLength + 0.5; - float3 normal_ripple = normalize(shSample(rippleNormalMap, relPos.xy).xyz * 2 - 1); - - //normal = normalize(normal + normal_ripple); - normal = normalize(float3(normal.x * BUMP + normal_ripple.x, normal.y * BUMP + normal_ripple.y, normal.z)); - normal = float3(normal.x, normal.y, -normal.z); - - // normal for sunlight scattering - float3 lNormal = (normal0 * BIG_WAVES_X*0.5 + normal1 * BIG_WAVES_Y*0.5 + - normal2 * MID_WAVES_X*0.2 + normal3 * MID_WAVES_Y*0.2 + - normal4 * SMALL_WAVES_X*0.1 + normal5 * SMALL_WAVES_Y*0.1).xyz; - lNormal = normalize(float3(lNormal.x * BUMP, lNormal.y * BUMP, lNormal.z)); - lNormal = float3(lNormal.x, lNormal.y, -lNormal.z); - - - float3 lVec = normalize(sunPosition.xyz); - float3 vVec = normalize(position.xyz - cameraPos.xyz); - - - float isUnderwater = (cameraPos.z > 0) ? 0.0 : 1.0; - - // sunlight scattering - float3 pNormal = float3(0,0,1); - float3 lR = reflect(lVec, lNormal); - float3 llR = reflect(lVec, pNormal); - - float s = shSaturate(dot(lR, vVec)*2.0-1.2); - float lightScatter = shadow * shSaturate(dot(-lVec,lNormal)*0.7+0.3) * s * SCATTER_AMOUNT * waterSunFade_sunHeight.x * shSaturate(1.0-exp(-waterSunFade_sunHeight.y)); - float3 scatterColour = shLerp(float3(SCATTER_COLOUR)*float3(1.0,0.4,0.0), SCATTER_COLOUR, shSaturate(1.0-exp(-waterSunFade_sunHeight.y*SUN_EXT))); - - // fresnel - float ior = (cameraPos.z>0)?(1.333/1.0):(1.0/1.333); //air to water; water to air - float fresnel = fresnel_dielectric(-vVec, normal, ior); - - fresnel = shSaturate(fresnel); - - // reflection - float3 reflection = shSample(reflectionMap, screenCoords+(normal.xy*REFL_BUMP)).rgb; - - // refraction - float3 R = reflect(vVec, normal); - -#if REFRACTION - float3 refraction = shSample(refractionMap, (screenCoords-(normal.xy*REFR_BUMP))*1.0).rgb; - - // brighten up the refraction underwater - refraction = (cameraPos.z < 0) ? shSaturate(refraction * 1.5) : refraction; -#endif - - // specular - float specular = pow(max(dot(R, lVec), 0.0),SPEC_HARDNESS) * shadow; - -#if REFRACTION - shOutputColour(0).xyz = shLerp( shLerp(refraction, scatterColour, lightScatter), reflection, fresnel) + specular * sunSpecular.xyz; -#else - shOutputColour(0).xyz = shLerp(reflection, float3(0.090195, 0.115685, 0.12745), (1.0-fresnel)*0.5) + specular * sunSpecular.xyz; -#endif - // fog - float fogValue = shSaturate((depthPassthrough - fogParams.y) * fogParams.w); - shOutputColour(0).xyz = shLerp (shOutputColour(0).xyz, fogColor, fogValue); - -#if REFRACTION - shOutputColour(0).w = 1; -#else - shOutputColour(0).w = shSaturate(fresnel*2 + specular); -#endif - } - -#endif - - -#endif +#include "core.h" + + +#define SIMPLE_WATER @shGlobalSettingBool(simple_water) + +#if SIMPLE_WATER + // --------------------------------------- SIMPLE WATER --------------------------------------------------- + +#define FOG @shGlobalSettingBool(fog) + +#ifdef SH_VERTEX_SHADER + + SH_BEGIN_PROGRAM + shUniform(float4x4, wvp) @shAutoConstant(wvp, worldviewproj_matrix) + shVertexInput(float2, uv0) + shOutput(float2, UV) + +#if FOG + shOutput(float, depth) +#endif + SH_START_PROGRAM + { + shOutputPosition = shMatrixMult(wvp, shInputPosition); + UV = uv0; +#if FOG + depth = shOutputPosition.z; +#endif + } + +#else + + SH_BEGIN_PROGRAM + shSampler2D(animatedTexture) + shInput(float2, UV) + shInput(float, depth) + + shUniform(float3, fogColor) @shAutoConstant(fogColor, fog_colour) + shUniform(float4, fogParams) @shAutoConstant(fogParams, fog_params) + + + SH_START_PROGRAM + { + shOutputColour(0).xyz = shSample(animatedTexture, UV * float2(15.0, 15.0)).xyz * float3(1.0, 1.0, 1.0); + shOutputColour(0).w = 0.7; + +#if FOG + float fogValue = shSaturate((depth - fogParams.y) * fogParams.w); + shOutputColour(0).xyz = shLerp (shOutputColour(0).xyz, fogColor, fogValue); +#endif + } + +#endif + +#else + + + +// Inspired by Blender GLSL Water by martinsh ( http://devlog-martinsh.blogspot.de/2012/07/waterundewater-shader-wip.html ) + +#define SHADOWS_PSSM @shGlobalSettingBool(shadows_pssm) +#define SHADOWS @shGlobalSettingBool(shadows) + +#if SHADOWS || SHADOWS_PSSM + #include "shadows.h" +#endif + +#define RIPPLES 1 +#define REFRACTION @shGlobalSettingBool(refraction) + +#ifdef SH_VERTEX_SHADER + + SH_BEGIN_PROGRAM + shUniform(float4x4, wvp) @shAutoConstant(wvp, worldviewproj_matrix) + shVertexInput(float2, uv0) + shOutput(float2, UV) + + shOutput(float3, screenCoordsPassthrough) + shOutput(float4, position) + shOutput(float, depthPassthrough) + + +#if SHADOWS + shOutput(float4, lightSpacePos0) + shUniform(float4x4, texViewProjMatrix0) @shAutoConstant(texViewProjMatrix0, texture_viewproj_matrix) +#endif + +#if SHADOWS_PSSM + @shForeach(3) + shOutput(float4, lightSpacePos@shIterator) + shUniform(float4x4, texViewProjMatrix@shIterator) @shAutoConstant(texViewProjMatrix@shIterator, texture_viewproj_matrix, @shIterator) + @shEndForeach +#endif + +#if SHADOWS || SHADOWS_PSSM + shUniform(float4x4, worldMatrix) @shAutoConstant(worldMatrix, world_matrix) +#endif + + SH_START_PROGRAM + { + shOutputPosition = shMatrixMult(wvp, shInputPosition); + UV = uv0; + + + #if !SH_GLSL + float4x4 scalemat = float4x4( 0.5, 0.0, 0.0, 0.5, + 0.0, -0.5, 0.0, 0.5, + 0.0, 0.0, 0.5, 0.5, + 0.0, 0.0, 0.0, 1.0 ); + #else + mat4 scalemat = mat4(0.5, 0.0, 0.0, 0.0, + 0.0, -0.5, 0.0, 0.0, + 0.0, 0.0, 0.5, 0.0, + 0.5, 0.5, 0.5, 1.0); + #endif + + float4 texcoordProj = shMatrixMult(scalemat, shOutputPosition); + screenCoordsPassthrough = float3(texcoordProj.x, texcoordProj.y, texcoordProj.w); + + position = shInputPosition; + + depthPassthrough = shOutputPosition.z; + + +#if SHADOWS + lightSpacePos0 = shMatrixMult(texViewProjMatrix0, shMatrixMult(worldMatrix, shInputPosition)); +#endif +#if SHADOWS_PSSM + float4 wPos = shMatrixMult(worldMatrix, shInputPosition); + @shForeach(3) + lightSpacePos@shIterator = shMatrixMult(texViewProjMatrix@shIterator, wPos); + @shEndForeach +#endif + } + +#else + + // tweakables ---------------------------------------------------- + + #define VISIBILITY 1500.0 // how far you can look through water + + #define BIG_WAVES_X 0.3 // strength of big waves + #define BIG_WAVES_Y 0.3 + + #define MID_WAVES_X 0.3 // strength of middle sized waves + #define MID_WAVES_Y 0.15 + + #define SMALL_WAVES_X 0.15 // strength of small waves + #define SMALL_WAVES_Y 0.1 + + #define WAVE_CHOPPYNESS 0.15 // wave choppyness + #define WAVE_SCALE 75.0 // overall wave scale + + #define BUMP 1.5 // overall water surface bumpiness + #define REFL_BUMP 0.08 // reflection distortion amount + #define REFR_BUMP 0.06 // refraction distortion amount + + #define SCATTER_AMOUNT 0.3 // amount of sunlight scattering + #define SCATTER_COLOUR float3(0.0,1.0,0.95) // colour of sunlight scattering + + #define SUN_EXT float3(0.45, 0.55, 0.68) //sunlight extinction + + #define SPEC_HARDNESS 256.0 // specular highlights hardness + + + // --------------------------------------------------------------- + + + + float fresnel_dielectric(float3 Incoming, float3 Normal, float eta) + { + /* compute fresnel reflectance without explicitly computing + the refracted direction */ + float c = abs(dot(Incoming, Normal)); + float g = eta * eta - 1.0 + c * c; + float result; + + if(g > 0.0) { + g = sqrt(g); + float A =(g - c)/(g + c); + float B =(c *(g + c)- 1.0)/(c *(g - c)+ 1.0); + result = 0.5 * A * A *(1.0 + B * B); + } + else + result = 1.0; /* TIR (no refracted component) */ + + return result; + } + + SH_BEGIN_PROGRAM + shInput(float2, UV) + shInput(float3, screenCoordsPassthrough) + shInput(float4, position) + shInput(float, depthPassthrough) + + #if RIPPLES + shUniform(float3, rippleCenter) @shSharedParameter(rippleCenter, rippleCenter) + shUniform(float, rippleAreaLength) @shSharedParameter(rippleAreaLength, rippleAreaLength) + #endif + + shUniform(float, far) @shAutoConstant(far, far_clip_distance) + + shSampler2D(reflectionMap) +#if REFRACTION + shSampler2D(refractionMap) +#endif + shSampler2D(depthMap) + shSampler2D(normalMap) + + #if RIPPLES + shSampler2D(rippleNormalMap) + shUniform(float4x4, wMat) @shAutoConstant(wMat, world_matrix) + #endif + + shUniform(float3, windDir_windSpeed) @shSharedParameter(windDir_windSpeed) + #define WIND_SPEED windDir_windSpeed.z + #define WIND_DIR windDir_windSpeed.xy + + shUniform(float, waterTimer) @shSharedParameter(waterTimer) + shUniform(float2, waterSunFade_sunHeight) @shSharedParameter(waterSunFade_sunHeight) + + shUniform(float4, sunPosition) @shAutoConstant(sunPosition, light_position, 0) + shUniform(float4, sunSpecular) @shAutoConstant(sunSpecular, light_specular_colour, 0) + + shUniform(float, renderTargetFlipping) @shAutoConstant(renderTargetFlipping, render_target_flipping) + + + shUniform(float3, fogColor) @shAutoConstant(fogColor, fog_colour) + shUniform(float4, fogParams) @shAutoConstant(fogParams, fog_params) + + shUniform(float4, cameraPos) @shAutoConstant(cameraPos, camera_position_object_space) + + +#if SHADOWS + shInput(float4, lightSpacePos0) + shSampler2D(shadowMap0) + shUniform(float2, invShadowmapSize0) @shAutoConstant(invShadowmapSize0, inverse_texture_size, 1) +#endif +#if SHADOWS_PSSM + @shForeach(3) + shInput(float4, lightSpacePos@shIterator) + shSampler2D(shadowMap@shIterator) + shUniform(float2, invShadowmapSize@shIterator) @shAutoConstant(invShadowmapSize@shIterator, inverse_texture_size, @shIterator(1)) + @shEndForeach + shUniform(float3, pssmSplitPoints) @shSharedParameter(pssmSplitPoints) +#endif + +#if SHADOWS || SHADOWS_PSSM + shUniform(float4, shadowFar_fadeStart) @shSharedParameter(shadowFar_fadeStart) +#endif + + + SH_START_PROGRAM + { +#if SHADOWS + float shadow = depthShadowPCF (shadowMap0, lightSpacePos0, invShadowmapSize0); +#endif +#if SHADOWS_PSSM + float shadow = pssmDepthShadow (lightSpacePos0, invShadowmapSize0, shadowMap0, lightSpacePos1, invShadowmapSize1, shadowMap1, lightSpacePos2, invShadowmapSize2, shadowMap2, depthPassthrough, pssmSplitPoints); +#endif + +#if SHADOWS || SHADOWS_PSSM + float fadeRange = shadowFar_fadeStart.x - shadowFar_fadeStart.y; + float fade = 1.0-((depthPassthrough - shadowFar_fadeStart.y) / fadeRange); + shadow = (depthPassthrough > shadowFar_fadeStart.x) ? 1.0 : ((depthPassthrough > shadowFar_fadeStart.y) ? 1.0-((1.0-shadow)*fade) : shadow); +#endif + +#if !SHADOWS && !SHADOWS_PSSM + float shadow = 1.0; +#endif + + + float2 screenCoords = screenCoordsPassthrough.xy / screenCoordsPassthrough.z; + screenCoords.y = (1.0-shSaturate(renderTargetFlipping))+renderTargetFlipping*screenCoords.y; + + float2 nCoord = float2(0.0,0.0); + + nCoord = UV * (WAVE_SCALE * 0.05) + WIND_DIR * waterTimer * (WIND_SPEED*0.04); + float3 normal0 = 2.0 * shSample(normalMap, nCoord + float2(-waterTimer*0.015,-waterTimer*0.005)).rgb - 1.0; + nCoord = UV * (WAVE_SCALE * 0.1) + WIND_DIR * waterTimer * (WIND_SPEED*0.08)-(normal0.xy/normal0.zz)*WAVE_CHOPPYNESS; + float3 normal1 = 2.0 * shSample(normalMap, nCoord + float2(+waterTimer*0.020,+waterTimer*0.015)).rgb - 1.0; + + nCoord = UV * (WAVE_SCALE * 0.25) + WIND_DIR * waterTimer * (WIND_SPEED*0.07)-(normal1.xy/normal1.zz)*WAVE_CHOPPYNESS; + float3 normal2 = 2.0 * shSample(normalMap, nCoord + float2(-waterTimer*0.04,-waterTimer*0.03)).rgb - 1.0; + nCoord = UV * (WAVE_SCALE * 0.5) + WIND_DIR * waterTimer * (WIND_SPEED*0.09)-(normal2.xy/normal2.z)*WAVE_CHOPPYNESS; + float3 normal3 = 2.0 * shSample(normalMap, nCoord + float2(+waterTimer*0.03,+waterTimer*0.04)).rgb - 1.0; + + nCoord = UV * (WAVE_SCALE* 1.0) + WIND_DIR * waterTimer * (WIND_SPEED*0.4)-(normal3.xy/normal3.zz)*WAVE_CHOPPYNESS; + float3 normal4 = 2.0 * shSample(normalMap, nCoord + float2(-waterTimer*0.02,+waterTimer*0.1)).rgb - 1.0; + nCoord = UV * (WAVE_SCALE * 2.0) + WIND_DIR * waterTimer * (WIND_SPEED*0.7)-(normal4.xy/normal4.zz)*WAVE_CHOPPYNESS; + float3 normal5 = 2.0 * shSample(normalMap, nCoord + float2(+waterTimer*0.1,-waterTimer*0.06)).rgb - 1.0; + + + + float3 normal = (normal0 * BIG_WAVES_X + normal1 * BIG_WAVES_Y + + normal2 * MID_WAVES_X + normal3 * MID_WAVES_Y + + normal4 * SMALL_WAVES_X + normal5 * SMALL_WAVES_Y); + + float4 worldPosition = shMatrixMult(wMat, float4(position.xyz, 1)); + float2 relPos = (worldPosition.xy - rippleCenter.xy) / rippleAreaLength + 0.5; + float3 normal_ripple = normalize(shSample(rippleNormalMap, relPos.xy).xyz * 2.0 - 1.0); + + //normal = normalize(normal + normal_ripple); + normal = normalize(float3(normal.x * BUMP + normal_ripple.x, normal.y * BUMP + normal_ripple.y, normal.z)); + normal = float3(normal.x, normal.y, -normal.z); + + // normal for sunlight scattering + float3 lNormal = (normal0 * BIG_WAVES_X*0.5 + normal1 * BIG_WAVES_Y*0.5 + + normal2 * MID_WAVES_X*0.2 + normal3 * MID_WAVES_Y*0.2 + + normal4 * SMALL_WAVES_X*0.1 + normal5 * SMALL_WAVES_Y*0.1).xyz; + lNormal = normalize(float3(lNormal.x * BUMP, lNormal.y * BUMP, lNormal.z)); + lNormal = float3(lNormal.x, lNormal.y, -lNormal.z); + + + float3 lVec = normalize(sunPosition.xyz); + float3 vVec = normalize(position.xyz - cameraPos.xyz); + + + float isUnderwater = (cameraPos.z > 0.0) ? 0.0 : 1.0; + + // sunlight scattering + float3 pNormal = float3(0,0,1); + float3 lR = reflect(lVec, lNormal); + float3 llR = reflect(lVec, pNormal); + + float s = shSaturate(dot(lR, vVec)*2.0-1.2); + float lightScatter = shadow * shSaturate(dot(-lVec,lNormal)*0.7+0.3) * s * SCATTER_AMOUNT * waterSunFade_sunHeight.x * shSaturate(1.0-exp(-waterSunFade_sunHeight.y)); + float3 scatterColour = shLerp(float3(SCATTER_COLOUR)*float3(1.0,0.4,0.0), SCATTER_COLOUR, shSaturate(1.0-exp(-waterSunFade_sunHeight.y*SUN_EXT))); + + // fresnel + float ior = (cameraPos.z>0.0)?(1.333/1.0):(1.0/1.333); //air to water; water to air + float fresnel = fresnel_dielectric(-vVec, normal, ior); + + fresnel = shSaturate(fresnel); + + // reflection + float3 reflection = shSample(reflectionMap, screenCoords+(normal.xy*REFL_BUMP)).rgb; + + // refraction + float3 R = reflect(vVec, normal); + +#if REFRACTION + float3 refraction = shSample(refractionMap, (screenCoords-(normal.xy*REFR_BUMP))*1.0).rgb; + + // brighten up the refraction underwater + refraction = (cameraPos.z < 0.0) ? shSaturate(refraction * 1.5) : refraction; +#endif + + // specular + float specular = pow(max(dot(R, lVec), 0.0),SPEC_HARDNESS) * shadow; + +#if REFRACTION + shOutputColour(0).xyz = shLerp( shLerp(refraction, scatterColour, lightScatter), reflection, fresnel) + specular * sunSpecular.xyz; +#else + shOutputColour(0).xyz = shLerp(reflection, float3(0.090195, 0.115685, 0.12745), (1.0-fresnel)*0.5) + specular * sunSpecular.xyz; +#endif + // fog + float fogValue = shSaturate((depthPassthrough - fogParams.y) * fogParams.w); + shOutputColour(0).xyz = shLerp (shOutputColour(0).xyz, fogColor, fogValue); + +#if REFRACTION + shOutputColour(0).w = 1.0; +#else + shOutputColour(0).w = shSaturate(fresnel*2.0 + specular); +#endif + } + +#endif + + +#endif