metaforce/Shaders/shader_CFluidPlaneShaderGLSL.cpp

#include "shader_CFluidPlaneShader.hpp"

static const char* VS =
"layout(location=0) in vec4 posIn;\n"
"layout(location=1) in vec4 normalIn;\n"
"layout(location=2) in vec4 binormalIn;\n"
"layout(location=3) in vec4 tangentIn;\n"
"layout(location=4) in vec4 colorIn;\n"
"\n"
"UBINDING0 uniform FluidPlaneUniform\n"
"{\n"
"    mat4 mv;\n"
"    mat4 mvNorm;\n"
"    mat4 proj;\n"
"    mat4 texMtxs[6];\n"
"};\n"
"\n"
"struct VertToFrag\n"
"{\n"
"    vec4 mvPos;\n"
"    vec4 mvNorm;\n"
"    vec4 mvBinorm;\n"
"    vec4 mvTangent;\n"
"    vec4 color;\n"
"    vec2 uvs[7];\n"
"};\n"
"\n"
"SBINDING(0) out VertToFrag vtf;\n"
"void main()\n"
"{\n"
"    vec4 pos = vec4(posIn.xyz, 1.0);\n"
"    vtf.mvPos = mv * pos;\n"
"    gl_Position = proj * vtf.mvPos;\n"
"    vtf.mvNorm = mvNorm * normalIn;\n"
"    vtf.mvBinorm = mvNorm * binormalIn;\n"
"    vtf.mvTangent = mvNorm * tangentIn;\n"
"    vtf.color = vec4(colorIn.xyz, 1.0);\n"
"    vtf.uvs[0] = (texMtxs[0] * pos).xy;\n"
"    vtf.uvs[1] = (texMtxs[1] * pos).xy;\n"
"    vtf.uvs[2] = (texMtxs[2] * pos).xy;\n"
"%s" // Additional TCGs here
"}\n";

static const char* TessVS =
"layout(location=0) in vec4 posIn;\n"
"layout(location=1) in vec4 outerLevelsIn;\n"
"layout(location=2) in vec2 innerLevelsIn;\n"
"\n"
"struct VertToControl\n"
"{\n"
"    vec4 minMaxPos;\n"
"    vec4 outerLevels;\n"
"    vec2 innerLevels;\n"
"};\n"
"\n"
"SBINDING(0) out VertToControl vtc;\n"
"\n"
"void main()\n"
"{\n"
"    vtc.minMaxPos = posIn;\n"
"    vtc.outerLevels = outerLevelsIn;\n"
"    vtc.innerLevels = innerLevelsIn;\n"
"}\n";

static const char* TessCS =
"#extension GL_ARB_tessellation_shader: enable\n"
"layout(vertices = 1) out;\n"
"\n"
"struct VertToControl\n"
"{\n"
"    vec4 minMaxPos;\n"
"    vec4 outerLevels;\n"
"    vec2 innerLevels;\n"
"};\n"
"\n"
"SBINDING(0) in VertToControl vtc[];\n"
"SBINDING(0) patch out vec4 minMaxPos;\n"
"\n"
"void main()\n"
"{\n"
"    minMaxPos = vtc[gl_InvocationID].minMaxPos;\n"
"    for (int i=0 ; i<4 ; ++i)\n"
"        gl_TessLevelOuter[i] = vtc[gl_InvocationID].outerLevels[i];\n"
"    for (int i=0 ; i<2 ; ++i)\n"
"        gl_TessLevelInner[i] = vtc[gl_InvocationID].innerLevels[i];\n"
"}";

static const char* TessES =
"#extension GL_ARB_tessellation_shader: enable\n"
"layout(quads, equal_spacing) in;\n"
"\n"
"struct Ripple\n"
"{\n"
"    vec4 center; // time, distFalloff\n"
"    vec4 params; // amplitude, lookupPhase, lookupTime\n"
"};\n"
"\n"
"UBINDING0 uniform FluidPlaneUniform\n"
"{\n"
"    mat4 mv;\n"
"    mat4 mvNorm;\n"
"    mat4 proj;\n"
"    mat4 texMtxs[6];\n"
"    Ripple ripples[20];\n"
"    vec4 colorMul;\n"
"    float rippleNormResolution;\n"
"};\n"
"\n"
"struct VertToFrag\n"
"{\n"
"    vec4 mvPos;\n"
"    vec4 mvNorm;\n"
"    vec4 mvBinorm;\n"
"    vec4 mvTangent;\n"
"    vec4 color;\n"
"    vec2 uvs[7];\n"
"};\n"
"\n"
"SBINDING(0) patch in vec4 minMaxPos;\n"
"SBINDING(0) out VertToFrag vtf;\n"
"\n"
"TBINDING%d uniform sampler2D RippleMap;\n"
"\n"
"const float PI_X2 = 6.283185307179586;\n"
"\n"
"void ApplyRipple(in Ripple ripple, in vec2 pos, inout float height)\n"
"{\n"
"    float dist = length(ripple.center.xy - pos);\n"
"    float rippleV = textureLod(RippleMap, vec2(dist * ripple.center.w, ripple.center.z), 0.0).r;\n"
"    height += rippleV * ripple.params.x * sin((dist * ripple.params.y + ripple.params.z) * PI_X2);\n"
"}\n"
"\n"
"void main()\n"
"{\n"
"    vec2 posIn = vec2(mix(minMaxPos.x, minMaxPos.z, gl_TessCoord.x),\n"
"                      mix(minMaxPos.y, minMaxPos.w, gl_TessCoord.y));\n"
"    float height = 0.0;\n"
"    float upHeight = 0.0;\n"
"    float downHeight = 0.0;\n"
"    float rightHeight = 0.0;\n"
"    float leftHeight = 0.0;\n"
"    for (int i=0 ; i<20 ; ++i)\n"
"    {\n"
"        ApplyRipple(ripples[i], posIn, height);\n"
"        ApplyRipple(ripples[i], posIn + vec2(0.0, rippleNormResolution), upHeight);\n"
"        ApplyRipple(ripples[i], posIn - vec2(0.0, rippleNormResolution), downHeight);\n"
"        ApplyRipple(ripples[i], posIn + vec2(rippleNormResolution, 0.0), rightHeight);\n"
"        ApplyRipple(ripples[i], posIn - vec2(rippleNormResolution, 0.0), leftHeight);\n"
"    }\n"
"    vec4 normalIn = vec4(normalize(vec3((leftHeight - rightHeight),\n"
"                                        (downHeight - upHeight),\n"
"                                        rippleNormResolution)), 1.0);\n"
"    vec4 binormalIn = vec4(normalIn.x, normalIn.z, -normalIn.y, 1.0);\n"
"    vec4 tangentIn = vec4(normalIn.z, normalIn.y, -normalIn.x, 1.0);\n"
"    vec4 pos = vec4(posIn, height, 1.0);\n"
"    vtf.mvPos = mv * pos;\n"
"    gl_Position = proj * vtf.mvPos;\n"
"    vtf.mvNorm = mvNorm * normalIn;\n"
"    vtf.mvBinorm = mvNorm * binormalIn;\n"
"    vtf.mvTangent = mvNorm * tangentIn;\n"
"    vtf.color = max(height, 0.0) * colorMul;\n"
"    vtf.color.a = 1.0;\n"
"    vtf.uvs[0] = (texMtxs[0] * pos).xy;\n"
"    vtf.uvs[1] = (texMtxs[1] * pos).xy;\n"
"    vtf.uvs[2] = (texMtxs[2] * pos).xy;\n"
"%s\n" // Additional TCGs here
"}\n";

static const char* FS =
"struct Light\n"
"{\n"
"    vec4 pos;\n"
"    vec4 dir;\n"
"    vec4 color;\n"
"    vec4 linAtt;\n"
"    vec4 angAtt;\n"
"};\n"
"struct Fog\n" // Reappropriated for indirect texture scaling
"{\n"
"    int mode;\n"
"    vec4 color;\n"
"    float rangeScale;\n"
"    float start;\n"
"    float indScale;\n"
"};\n"
"\n"
"UBINDING2 uniform LightingUniform\n"
"{\n"
"    Light lights[" _XSTR(URDE_MAX_LIGHTS) "];\n"
"    vec4 ambient;\n"
"    vec4 kColor0;\n"
"    vec4 kColor1;\n"
"    vec4 kColor2;\n"
"    vec4 kColor3;\n"
"    Fog fog;\n"
"};\n"
"\n"
"vec4 LightingFunc(vec3 mvPosIn, vec3 mvNormIn)\n"
"{\n"
"    vec4 ret = ambient;\n"
"    \n"
"    for (int i=0 ; i<" _XSTR(URDE_MAX_LIGHTS) " ; ++i)\n"
"    {\n"
"        vec3 delta = mvPosIn - lights[i].pos.xyz;\n"
"        float dist = length(delta);\n"
"        float angDot = clamp(dot(normalize(delta).xyz, lights[i].dir.xyz), 0.0, 1.0);\n"
"        float att = 1.0 / (lights[i].linAtt[2] * dist * dist +\n"
"                           lights[i].linAtt[1] * dist +\n"
"                           lights[i].linAtt[0]);\n"
"        float angAtt = lights[i].angAtt[2] * angDot * angDot +\n"
"                       lights[i].angAtt[1] * angDot +\n"
"                       lights[i].angAtt[0];\n"
"        ret += lights[i].color * clamp(angAtt, 0.0, 1.0) * att * clamp(dot(normalize(-delta).xyz, mvNormIn), 0.0, 1.0);\n"
"    }\n"
"    \n"
"    return ret;\n"
"}\n"
"\n"
"struct VertToFrag\n"
"{\n"
"    vec4 mvPos;\n"
"    vec4 mvNorm;\n"
"    vec4 mvBinorm;\n"
"    vec4 mvTangent;\n"
"    vec4 color;\n"
"    vec2 uvs[7];\n"
"};\n"
"\n"
"SBINDING(0) in VertToFrag vtf;\n"
"vec4 MainPostFunc(vec4 colorIn)\n"
"{\n"
"    float fogZ, temp;\n"
"    switch (fog.mode)\n"
"    {\n"
"    case 2:\n"
"        fogZ = (-vtf.mvPos.z - fog.start) * fog.rangeScale;\n"
"        break;\n"
"    case 4:\n"
"        fogZ = 1.0 - exp2(-8.0 * (-vtf.mvPos.z - fog.start) * fog.rangeScale);\n"
"        break;\n"
"    case 5:\n"
"        temp = (-vtf.mvPos.z - fog.start) * fog.rangeScale;\n"
"        fogZ = 1.0 - exp2(-8.0 * temp * temp);\n"
"        break;\n"
"    case 6:\n"
"        fogZ = exp2(-8.0 * (fog.start + vtf.mvPos.z) * fog.rangeScale);\n"
"        break;\n"
"    case 7:\n"
"        temp = (fog.start + vtf.mvPos.z) * fog.rangeScale;\n"
"        fogZ = exp2(-8.0 * temp * temp);\n"
"        break;\n"
"    default:\n"
"        fogZ = 0.0;\n"
"        break;\n"
"    }\n"
"#if %d\n"
"    return vec4(mix(colorIn, vec4(0.0), clamp(fogZ, 0.0, 1.0)).rgb, colorIn.a);\n"
"#else\n"
"    return vec4(mix(colorIn, fog.color, clamp(fogZ, 0.0, 1.0)).rgb, colorIn.a);\n"
"#endif\n"
"}\n"
"\n"
"layout(location=0) out vec4 colorOut;\n"
"%s" // Textures here
"void main()\n"
"{\n"
"    vec4 lighting = LightingFunc(vtf.mvPos.xyz, normalize(vtf.mvNorm.xyz));\n"
"%s" // Combiner expression here
"    colorOut = MainPostFunc(colorOut);\n"
"}\n";

static const char* FSDoor =
"\n"
"struct Light\n"
"{\n"
"    vec4 pos;\n"
"    vec4 dir;\n"
"    vec4 color;\n"
"    vec4 linAtt;\n"
"    vec4 angAtt;\n"
"};\n"
"struct Fog\n" // Reappropriated for indirect texture scaling
"{\n"
"    int mode;\n"
"    vec4 color;\n"
"    float rangeScale;\n"
"    float start;\n"
"    float indScale;\n"
"};\n"
"\n"
"UBINDING2 uniform LightingUniform\n"
"{\n"
"    Light lights[" _XSTR(URDE_MAX_LIGHTS) "];\n"
"    vec4 ambient;\n"
"    vec4 kColor0;\n"
"    vec4 kColor1;\n"
"    vec4 kColor2;\n"
"    vec4 kColor3;\n"
"    Fog fog;\n"
"};\n"
"\n"
"struct VertToFrag\n"
"{\n"
"    vec4 mvPos;\n"
"    vec4 mvNorm;\n"
"    vec4 mvBinorm;\n"
"    vec4 mvTangent;\n"
"    vec4 color;\n"
"    vec2 uvs[7];\n"
"};\n"
"\n"
"SBINDING(0) in VertToFrag vtf;\n"
"layout(location=0) out vec4 colorOut;\n"
"%s" // Textures here
"void main()\n"
"{\n"
"%s" // Combiner expression here
"}\n";

static std::string _BuildFS(const SFluidPlaneShaderInfo& info)
{
    std::string textures;
    std::string combiner;
    int nextTex = 0;
    int nextTCG = 3;
    int bumpMapUv, envBumpMapUv, envMapUv, lightmapUv;

    if (info.m_hasPatternTex1)
    {
        textures += hecl::Format("TBINDING%d uniform sampler2D patternTex1;\n", nextTex++);
    }
    if (info.m_hasPatternTex2)
    {
        textures += hecl::Format("TBINDING%d uniform sampler2D patternTex2;\n", nextTex++);
    }
    if (info.m_hasColorTex)
    {
        textures += hecl::Format("TBINDING%d uniform sampler2D colorTex;\n", nextTex++);
    }
    if (info.m_hasBumpMap)
    {
        textures += hecl::Format("TBINDING%d uniform sampler2D bumpMap;\n", nextTex++);
    }
    if (info.m_hasEnvMap)
    {
        textures += hecl::Format("TBINDING%d uniform sampler2D envMap;\n", nextTex++);
    }
    if (info.m_hasEnvBumpMap)
    {
        textures += hecl::Format("TBINDING%d uniform sampler2D envBumpMap;\n", nextTex++);
    }
    if (info.m_hasLightmap)
    {
        textures += hecl::Format("TBINDING%d uniform sampler2D lightMap;\n", nextTex++);
    }

    if (info.m_hasBumpMap)
    {
        bumpMapUv = nextTCG++;
    }
    if (info.m_hasEnvBumpMap)
    {
        envBumpMapUv = nextTCG++;
    }
    if (info.m_hasEnvMap)
    {
        envMapUv = nextTCG++;
    }
    if (info.m_hasLightmap)
    {
        lightmapUv = nextTCG;
    }

    switch (info.m_type)
    {
    case EFluidType::NormalWater:
    case EFluidType::PhazonFluid:
    case EFluidType::Four:
        if (info.m_hasLightmap)
        {
            combiner += hecl::Format("    vec4 lightMapTexel = texture(lightMap, vtf.uvs[%d]);\n", lightmapUv);
            // 0: Tex4TCG, Tex4, doubleLightmapBlend ? NULL : GX_COLOR1A1
            // ZERO, TEX, KONST, doubleLightmapBlend ? ZERO : RAS
            // Output reg 2
            // KColor 2
            if (info.m_doubleLightmapBlend)
            {
                // 1: Tex4TCG2, Tex4, GX_COLOR1A1
                // C2, TEX, KONST, RAS
                // Output reg 2
                // KColor 3
                // Tex * K2 + Lighting
                combiner += "    lighting += mix(lightMapTexel * kColor2, lightMapTexel, kColor3);\n";
            }
            else
            {
                // mix(Tex * K2, Tex, K3) + Lighting
                combiner += "    lighting += lightMapTexel * kColor2;\n";
            }
        }

        // Next: Tex0TCG, Tex0, GX_COLOR1A1
        // ZERO, TEX, KONST, RAS
        // Output reg prev
        // KColor 0

        // Next: Tex1TCG, Tex1, GX_COLOR0A0
        // ZERO, TEX, PREV, RAS
        // Output reg prev

        // Next: Tex2TCG, Tex2, GX_COLOR1A1
        // ZERO, TEX, hasTex4 ? C2 : RAS, PREV
        // Output reg prev

        // (Tex0 * kColor0 + Lighting) * Tex1 + VertColor + Tex2 * Lighting
        if (info.m_hasPatternTex2)
        {
            if (info.m_hasPatternTex1)
                combiner += "    colorOut = (texture(patternTex1, vtf.uvs[0]) * kColor0 + lighting) *\n"
                            "               texture(patternTex2, vtf.uvs[1]) + vtf.color;\n";
            else
                combiner += "    colorOut = lighting * texture(patternTex2, vtf.uvs[1]) + vtf.color;\n";
        }
        else
        {
            combiner += "    colorOut = vtf.color;\n";
        }


        if (info.m_hasColorTex && !info.m_hasEnvMap && info.m_hasEnvBumpMap)
        {
            // Make previous stage indirect, mtx0
            combiner += hecl::Format("    vec2 indUvs = (texture(envBumpMap, vtf.uvs[%d]).ra - vec2(0.5, 0.5)) *\n"
                                     "        vec2(fog.indScale, -fog.indScale);\n", envBumpMapUv);
            combiner += "    colorOut += texture(colorTex, indUvs + vtf.uvs[2]) * lighting;\n";
        }
        else if (info.m_hasEnvMap)
        {
            // Next: envTCG, envTex, NULL
            // PREV, TEX, KONST, ZERO
            // Output reg prev
            // KColor 1

            // Make previous stage indirect, mtx0
            if (info.m_hasColorTex)
                combiner += "    colorOut += texture(colorTex, vtf.uvs[2]) * lighting;\n";
            combiner += hecl::Format("    vec2 indUvs = (texture(envBumpMap, vtf.uvs[%d]).ra - vec2(0.5, 0.5)) *\n"
                                     "        vec2(fog.indScale, -fog.indScale);\n", envBumpMapUv);
            combiner += hecl::Format("    colorOut = mix(colorOut, texture(envMap, indUvs + vtf.uvs[%d]), kColor1);\n",
                                     envMapUv);
        }
        else if (info.m_hasColorTex)
        {
            combiner += "    colorOut += texture(colorTex, vtf.uvs[2]) * lighting;\n";
        }

        break;

    case EFluidType::PoisonWater:
        if (info.m_hasLightmap)
        {
            combiner += hecl::Format("    vec4 lightMapTexel = texture(lightMap, vtf.uvs[%d]);\n", lightmapUv);
            // 0: Tex4TCG, Tex4, doubleLightmapBlend ? NULL : GX_COLOR1A1
            // ZERO, TEX, KONST, doubleLightmapBlend ? ZERO : RAS
            // Output reg 2
            // KColor 2
            if (info.m_doubleLightmapBlend)
            {
                // 1: Tex4TCG2, Tex4, GX_COLOR1A1
                // C2, TEX, KONST, RAS
                // Output reg 2
                // KColor 3
                // Tex * K2 + Lighting
                combiner += "    lighting += mix(lightMapTexel * kColor2, lightMapTexel, kColor3);\n";
            }
            else
            {
                // mix(Tex * K2, Tex, K3) + Lighting
                combiner += "    lighting += lightMapTexel * kColor2;\n";
            }
        }

        // Next: Tex0TCG, Tex0, GX_COLOR1A1
        // ZERO, TEX, KONST, RAS
        // Output reg prev
        // KColor 0

        // Next: Tex1TCG, Tex1, GX_COLOR0A0
        // ZERO, TEX, PREV, RAS
        // Output reg prev

        // Next: Tex2TCG, Tex2, GX_COLOR1A1
        // ZERO, TEX, hasTex4 ? C2 : RAS, PREV
        // Output reg prev

        // (Tex0 * kColor0 + Lighting) * Tex1 + VertColor + Tex2 * Lighting
        if (info.m_hasPatternTex2)
        {
            if (info.m_hasPatternTex1)
                combiner += "    colorOut = (texture(patternTex1, vtf.uvs[0]) * kColor0 + lighting) *\n"
                            "               texture(patternTex2, vtf.uvs[1]) + vtf.color;\n";
            else
                combiner += "    colorOut = lighting * texture(patternTex2, vtf.uvs[1]) + vtf.color;\n";
        }
        else
        {
            combiner += "    colorOut = vtf.color;\n";
        }

        if (info.m_hasColorTex)
        {
            if (info.m_hasEnvBumpMap)
            {
                // Make previous stage indirect, mtx0
                combiner += hecl::Format("    vec2 indUvs = (texture(envBumpMap, vtf.uvs[%d]).ra - vec2(0.5, 0.5)) *\n"
                                         "        vec2(fog.indScale, -fog.indScale);\n", envBumpMapUv);
                combiner += "    colorOut += texture(colorTex, indUvs + vtf.uvs[2]) * lighting;\n";
            }
            else
            {
                combiner += "    colorOut += texture(colorTex, vtf.uvs[2]) * lighting;\n";
            }
        }

        break;

    case EFluidType::Lava:
        // 0: Tex0TCG, Tex0, GX_COLOR0A0
        // ZERO, TEX, KONST, RAS
        // Output reg prev
        // KColor 0

        // 1: Tex1TCG, Tex1, GX_COLOR0A0
        // ZERO, TEX, PREV, RAS
        // Output reg prev

        // 2: Tex2TCG, Tex2, NULL
        // ZERO, TEX, ONE, PREV
        // Output reg prev

        // (Tex0 * kColor0 + VertColor) * Tex1 + VertColor + Tex2
        if (info.m_hasPatternTex2)
        {
            if (info.m_hasPatternTex1)
                combiner += "    colorOut = (texture(patternTex1, vtf.uvs[0]) * kColor0 + vtf.color) *\n"
                            "               texture(patternTex2, vtf.uvs[1]) + vtf.color;\n";
            else
                combiner += "    colorOut = vtf.color * texture(patternTex2, vtf.uvs[1]) + vtf.color;\n";
        }
        else
        {
            combiner += "    colorOut = vtf.color;\n";
        }

        if (info.m_hasColorTex)
            combiner += "    colorOut += texture(colorTex, vtf.uvs[2]);\n";

        if (info.m_hasBumpMap)
        {
            // 3: bumpMapTCG, bumpMap, NULL
            // ZERO, TEX, ONE, HALF
            // Output reg 0, no clamp, no bias

            // 4: bumpMapTCG2, bumpMap, NULL
            // ZERO, TEX, ONE, C0
            // Output reg 0, subtract, clamp, no bias

            combiner += "    vec3 lightVec = lights[3].pos.xyz - vtf.mvPos.xyz;\n"
                        "    float lx = dot(vtf.mvTangent.xyz, lightVec);\n"
                        "    float ly = dot(vtf.mvBinorm.xyz, lightVec);\n";
            combiner += hecl::Format("    vec4 emboss1 = texture(bumpMap, vtf.uvs[%d]) + vec4(0.5);\n"
                                     "    vec4 emboss2 = texture(bumpMap, vtf.uvs[%d] + vec2(lx, ly));\n",
                                     bumpMapUv, bumpMapUv);

            // 5: NULL, NULL, NULL
            // ZERO, PREV, C0, ZERO
            // Output reg prev, scale 2, clamp

            // colorOut * clamp(emboss1 + 0.5 - emboss2, 0.0, 1.0) * 2.0
            combiner += "colorOut *= clamp((emboss1 + vec4(0.5) - emboss2) * vec4(2.0), vec4(0.0), vec4(1.0));\n";
        }

        break;

    case EFluidType::ThickLava:
        // 0: Tex0TCG, Tex0, GX_COLOR0A0
        // ZERO, TEX, KONST, RAS
        // Output reg prev
        // KColor 0

        // 1: Tex1TCG, Tex1, GX_COLOR0A0
        // ZERO, TEX, PREV, RAS
        // Output reg prev

        // 2: Tex2TCG, Tex2, NULL
        // ZERO, TEX, ONE, PREV
        // Output reg prev

        // (Tex0 * kColor0 + VertColor) * Tex1 + VertColor + Tex2
        if (info.m_hasPatternTex2)
        {
            if (info.m_hasPatternTex1)
                combiner += "    colorOut = (texture(patternTex1, vtf.uvs[0]) * kColor0 + vtf.color) *\n"
                            "               texture(patternTex2, vtf.uvs[1]) + vtf.color;\n";
            else
                combiner += "    colorOut = vtf.color * texture(patternTex2, vtf.uvs[1]) + vtf.color;\n";
        }
        else
        {
            combiner += "    colorOut = vtf.color;\n";
        }

        if (info.m_hasColorTex)
            combiner += "    colorOut += texture(colorTex, vtf.uvs[2]);\n";

        if (info.m_hasBumpMap)
        {
            // 3: bumpMapTCG, bumpMap, NULL
            // ZERO, TEX, PREV, ZERO
            // Output reg prev, scale 2
            combiner += hecl::Format("    vec4 emboss1 = texture(bumpMap, vtf.uvs[%d]) + vec4(0.5);\n", bumpMapUv);
            combiner += "colorOut *= emboss1 * vec4(2.0);\n";
        }

        break;
    }

    combiner += "    colorOut.a = kColor0.a;\n";

    char *finalFSs;
    asprintf(&finalFSs, FS, int(info.m_additive), textures.c_str(), combiner.c_str());
    std::string ret(finalFSs);
    free(finalFSs);
    return ret;
}

static std::string _BuildAdditionalTCGs(const SFluidPlaneShaderInfo& info)
{
    std::string additionalTCGs;
    int nextTCG = 3;
    int nextMtx = 4;

    if (info.m_hasBumpMap)
    {
        additionalTCGs += hecl::Format("    vtf.uvs[%d] = (texMtxs[0] * pos).xy;\n", nextTCG++);
    }
    if (info.m_hasEnvBumpMap)
    {
        additionalTCGs += hecl::Format("    vtf.uvs[%d] = (texMtxs[3] * vec4(normalIn.xyz, 1.0)).xy;\n", nextTCG++);
    }
    if (info.m_hasEnvMap)
    {
        additionalTCGs += hecl::Format("    vtf.uvs[%d] = (texMtxs[%d] * pos).xy;\n", nextTCG++, nextMtx++);
    }
    if (info.m_hasLightmap)
    {
        additionalTCGs += hecl::Format("    vtf.uvs[%d] = (texMtxs[%d] * pos).xy;\n", nextTCG, nextMtx);
    }

    return additionalTCGs;
}

static std::string _BuildVS(const SFluidPlaneShaderInfo& info, bool tessellation)
{
    if (tessellation)
        return TessVS;

    std::string additionalTCGs = _BuildAdditionalTCGs(info);

    char *finalVSs;
    asprintf(&finalVSs, VS, additionalTCGs.c_str());
    std::string ret(finalVSs);
    free(finalVSs);
    return ret;
}
template <>
std::string StageObject_CFluidPlaneShader<hecl::PlatformType::OpenGL, hecl::PipelineStage::Vertex>::BuildShader
    (const SFluidPlaneShaderInfo& in, bool tessellation)
{
    return _BuildVS(in, tessellation);
}
template <>
std::string StageObject_CFluidPlaneShader<hecl::PlatformType::Vulkan, hecl::PipelineStage::Vertex>::BuildShader
    (const SFluidPlaneShaderInfo& in, bool tessellation)
{
    return _BuildVS(in, tessellation);
}
template <>
std::string StageObject_CFluidPlaneShader<hecl::PlatformType::NX, hecl::PipelineStage::Vertex>::BuildShader
    (const SFluidPlaneShaderInfo& in, bool tessellation)
{
    return _BuildVS(in, tessellation);
}

template <>
std::string StageObject_CFluidPlaneShader<hecl::PlatformType::OpenGL, hecl::PipelineStage::Fragment>::BuildShader
    (const SFluidPlaneShaderInfo& in, bool tessellation)
{
    return _BuildFS(in);
}
template <>
std::string StageObject_CFluidPlaneShader<hecl::PlatformType::Vulkan, hecl::PipelineStage::Fragment>::BuildShader
    (const SFluidPlaneShaderInfo& in, bool tessellation)
{
    return _BuildFS(in);
}
template <>
std::string StageObject_CFluidPlaneShader<hecl::PlatformType::NX, hecl::PipelineStage::Fragment>::BuildShader
    (const SFluidPlaneShaderInfo& in, bool tessellation)
{
    return _BuildFS(in);
}

template <>
std::string StageObject_CFluidPlaneShader<hecl::PlatformType::OpenGL, hecl::PipelineStage::Control>::BuildShader
    (const SFluidPlaneShaderInfo& in, bool tessellation)
{
    return TessCS;
}
template <>
std::string StageObject_CFluidPlaneShader<hecl::PlatformType::Vulkan, hecl::PipelineStage::Control>::BuildShader
    (const SFluidPlaneShaderInfo& in, bool tessellation)
{
    return TessCS;
}
template <>
std::string StageObject_CFluidPlaneShader<hecl::PlatformType::NX, hecl::PipelineStage::Control>::BuildShader
    (const SFluidPlaneShaderInfo& in, bool tessellation)
{
    return TessCS;
}

static std::string BuildES(const SFluidPlaneShaderInfo& info)
{
    int nextTex = 0;
    if (info.m_hasPatternTex1)
        nextTex++;
    if (info.m_hasPatternTex2)
        nextTex++;
    if (info.m_hasColorTex)
        nextTex++;
    if (info.m_hasBumpMap)
        nextTex++;
    if (info.m_hasEnvMap)
        nextTex++;
    if (info.m_hasEnvBumpMap)
        nextTex++;
    if (info.m_hasLightmap)
        nextTex++;

    std::string additionalTCGs = _BuildAdditionalTCGs(info);

    char *finalESs;
    asprintf(&finalESs, TessES, nextTex, additionalTCGs.c_str());
    std::string ret(finalESs);
    free(finalESs);

    return ret;
}
template <>
std::string StageObject_CFluidPlaneShader<hecl::PlatformType::OpenGL, hecl::PipelineStage::Evaluation>::BuildShader
    (const SFluidPlaneShaderInfo& in, bool tessellation)
{
    return BuildES(in);
}
template <>
std::string StageObject_CFluidPlaneShader<hecl::PlatformType::Vulkan, hecl::PipelineStage::Evaluation>::BuildShader
    (const SFluidPlaneShaderInfo& in, bool tessellation)
{
    return BuildES(in);
}
template <>
std::string StageObject_CFluidPlaneShader<hecl::PlatformType::NX, hecl::PipelineStage::Evaluation>::BuildShader
    (const SFluidPlaneShaderInfo& in, bool tessellation)
{
    return BuildES(in);
}

static std::string _BuildVS(const SFluidPlaneDoorShaderInfo& info)
{
    char *finalVSs;
    asprintf(&finalVSs, VS, "");
    std::string ret(finalVSs);
    free(finalVSs);
    return ret;
}

static std::string _BuildFS(const SFluidPlaneDoorShaderInfo& info)
{
    int nextTex = 0;
    std::string textures;
    std::string combiner;

    if (info.m_hasPatternTex1)
    {
        textures += hecl::Format("TBINDING%d uniform sampler2D patternTex1;\n", nextTex++);
    }
    if (info.m_hasPatternTex2)
    {
        textures += hecl::Format("TBINDING%d uniform sampler2D patternTex2;\n", nextTex++);
    }
    if (info.m_hasColorTex)
    {
        textures += hecl::Format("TBINDING%d uniform sampler2D colorTex;\n", nextTex++);
    }

    // Tex0 * kColor0 * Tex1 + Tex2
    if (info.m_hasPatternTex1 && info.m_hasPatternTex2)
    {
        combiner += "    colorOut = texture(patternTex1, vtf.uvs[0]) * kColor0 *\n"
                    "               texture(patternTex2, vtf.uvs[1]);\n";
    }
    else
    {
        combiner += "    colorOut = vec4(0.0);\n";
    }

    if (info.m_hasColorTex)
    {
        combiner += "    colorOut += texture(colorTex, vtf.uvs[2]);\n";
    }

    combiner += "    colorOut.a = kColor0.a;\n";

    char *finalFSs;
    asprintf(&finalFSs, FSDoor, textures.c_str(), combiner.c_str());
    std::string ret(finalFSs);
    free(finalFSs);
    return ret;
}

template <>
std::string StageObject_CFluidPlaneDoorShader<hecl::PlatformType::OpenGL, hecl::PipelineStage::Vertex>::BuildShader
    (const SFluidPlaneDoorShaderInfo& in)
{
    return _BuildVS(in);
}
template <>
std::string StageObject_CFluidPlaneDoorShader<hecl::PlatformType::Vulkan, hecl::PipelineStage::Vertex>::BuildShader
    (const SFluidPlaneDoorShaderInfo& in)
{
    return _BuildVS(in);
}
template <>
std::string StageObject_CFluidPlaneDoorShader<hecl::PlatformType::NX, hecl::PipelineStage::Vertex>::BuildShader
    (const SFluidPlaneDoorShaderInfo& in)
{
    return _BuildVS(in);
}

template <>
std::string StageObject_CFluidPlaneDoorShader<hecl::PlatformType::OpenGL, hecl::PipelineStage::Fragment>::BuildShader
    (const SFluidPlaneDoorShaderInfo& in)
{
    return _BuildFS(in);
}
template <>
std::string StageObject_CFluidPlaneDoorShader<hecl::PlatformType::Vulkan, hecl::PipelineStage::Fragment>::BuildShader
    (const SFluidPlaneDoorShaderInfo& in)
{
    return _BuildFS(in);
}
template <>
std::string StageObject_CFluidPlaneDoorShader<hecl::PlatformType::NX, hecl::PipelineStage::Fragment>::BuildShader
    (const SFluidPlaneDoorShaderInfo& in)
{
    return _BuildFS(in);
}