FlareGeomShader()
: GeometryShader(
ObjectDesc("Flare geometry shader"),
StrCRef("#version 150\n"
"layout(points) in;"
"layout(triangle_strip, max_vertices = 72) out;"
"uniform mat4 ProjectionMatrix;"
"uniform int Samples;"
"out vec2 geomTexCoord;"
"void main()"
"{"
" for(int l=0; l!=3; ++l)"
" {"
" int i = 0, n = 8 + l*4;"
" float step = (2.0 * 3.1415)/float(n-1);"
" float a = length(gl_in[0].gl_Position)*(0.3+l*0.4);"
" float Radius = "
" sqrt(Samples)*0.01 + "
" Samples*sqrt(float(l))*0.001;"
" while(i != n)"
" {"
" vec4 Offs = vec4(cos(a)*(1.0+l*0.2),sin(a),0,0);"
" gl_Position = "
" ProjectionMatrix * "
" gl_in[0].gl_Position;"
" geomTexCoord = vec2(float(i), 0.0);"
" EmitVertex();"
" gl_Position = "
" ProjectionMatrix * "
" (gl_in[0].gl_Position + Offs*Radius);"
" geomTexCoord = vec2(float(i), 1.05-l*0.05);"
" EmitVertex();"
" ++i;"
" a += step;"
" }"
" EndPrimitive();"
" }"
"}")) {}
LiquidFragShader(void)
: FragmentShader(
ObjectDesc("Liquid fragment shader"),
StrCRef("#version 330\n"
"uniform samplerCube EnvMap;"
"in vec3 geomNormal, geomLightDir, geomViewDir;"
"out vec3 fragColor;"
"void main(void)"
"{"
" vec3 Normal = normalize(geomNormal);"
" vec3 LightDir = normalize(geomLightDir);"
" vec3 ViewDir = normalize(geomViewDir);"
" float LightRefl = dot(reflect(-LightDir, Normal), ViewDir);"
" float LightHit = dot(Normal, LightDir);"
" float Specular = pow(clamp(LightRefl+0.1, 0.0, 1.0), 32);"
" float Diffuse1 = pow(max(LightHit*0.6+0.4, 0.0), 2.0);"
" float Diffuse2 = sqrt(max(LightHit+0.2, 0.0));"
" float Diffuse = Diffuse1 * 0.8 + Diffuse2 * 0.2;"
" float ViewLight = max(0.3-dot(ViewDir, LightDir), 0.0);"
" float Ambient = 0.9;"
" vec3 Environ = texture(EnvMap, reflect(-ViewDir, Normal)).rgb;"
" fragColor = "
" Environ * Ambient +"
" vec3(0.4, 0.8, 0.4) * Diffuse+"
" vec3(0.2, 0.2, 0.2) * Specular;"
"}")
)
{ }
static Program make_prog(void)
{
Program prog;
VertexShader vs;
vs.Source(StrCRef(
"#version 330\n"
"in vec3 Position;"
"in vec2 TexCoord;"
"out vec2 vertTexCoord;"
"void main(void)"
"{"
" gl_Position = vec4(Position, 1.0);"
" vertTexCoord = TexCoord;"
"}"
)).Compile();
prog.AttachShader(vs);
GeometryShader gs;
gs.Source(StrCRef(
"#version 330\n"
"#extension GL_ARB_gpu_shader5 : enable\n"
"layout(triangles, invocations = 7) in;"
"layout(triangle_strip, max_vertices = 21) out;"
"uniform mat4 ProjectionMatrix, CameraMatrix;"
"mat4 Matrix = ProjectionMatrix * CameraMatrix;"
"uniform vec3 CameraPosition;"
"in vec2 vertTexCoord[3];"
"out gl_PerVertex {"
" vec4 gl_Position;"
" float gl_ClipDistance[3];"
"};"
"flat out mat3 geomPositionFront;"
"flat out mat3 geomTexCoordFront;"
"flat out vec3 geomWFront;"
"noperspective out vec3 geomBarycentric;"
"out vec3 geomPosition;"
"out vec3 geomTexCoord;"
"void main(void)"
"{"
" vec4 world_pos[8*3];"
" vec3 tex_coord[8*3];"
" vec4 view_pos[8*3];"
" vec3 screen_pos[8*3];"
" bool front_facing[8];"
" int ft = gl_InvocationID+1;"
" for(int pass=0; pass!=2; ++pass)"
" {"
" bool first = pass == 0;"
" if(((ft == 0) && first) || (((ft != 0) && !first)))"
" {"
" for(int v=0; v!=3; ++v)"
" {"
" int w = 2-v;"
" world_pos[0+v] = gl_in[w].gl_Position;"
" tex_coord[0+v] = vec3(vertTexCoord[w], 0.0);"
" }"
" }"
" vec4 n = vec4(-0.15 * normalize(cross("
" gl_in[1].gl_Position.xyz-gl_in[0].gl_Position.xyz,"
" gl_in[2].gl_Position.xyz-gl_in[0].gl_Position.xyz "
" )), 0.0);"
" if(((ft == 1) && first) || (((ft != 1) && !first)))"
" {"
" for(int v=0; v!=3; ++v)"
" {"
" world_pos[3+v] = gl_in[v].gl_Position + n;"
" tex_coord[3+v] = vec3(vertTexCoord[v], 1.0);"
" }"
" }"
" for(int v=0; v!=3; ++v)"
" {"
" int w = (v+1)%3;"
" int k = 2+2*v;"
" if(((ft == k) && first) || (((ft != k) && !first)))"
" {"
" world_pos[6+0+v*6] = gl_in[v].gl_Position;"
" tex_coord[6+0+v*6] = vec3(vertTexCoord[v], 0.0);"
" world_pos[6+1+v*6] = gl_in[w].gl_Position;"
" tex_coord[6+1+v*6] = vec3(vertTexCoord[w], 0.0);"
" world_pos[6+2+v*6] = gl_in[v].gl_Position + n;"
" tex_coord[6+2+v*6] = vec3(vertTexCoord[v], 1.0);"
" }"
" k = 3+2*v;"
" if(((ft == k) && first) || (((ft != k) && !first)))"
" {"
" world_pos[6+3+v*6] = gl_in[w].gl_Position;"
" tex_coord[6+3+v*6] = vec3(vertTexCoord[w], 0.0);"
" world_pos[6+4+v*6] = gl_in[w].gl_Position + n;"
" tex_coord[6+4+v*6] = vec3(vertTexCoord[w], 1.0);"
" world_pos[6+5+v*6] = gl_in[v].gl_Position + n;"
" tex_coord[6+5+v*6] = vec3(vertTexCoord[v], 1.0);"
" }"
" }"
" for(int t=first?ft:0; t!=8; ++t)"
" {"
" if(!first && (t == ft)) continue;"
" int o = t*3;"
" for(int v=0; v!=3; ++v)"
" {"
" int w = o+v;"
" view_pos[w] = Matrix * world_pos[w];"
" screen_pos[w] = view_pos[w].xyz/view_pos[w].w;"
" }"
" front_facing[t] = cross("
" screen_pos[o+1]-screen_pos[o+0],"
" screen_pos[o+2]-screen_pos[o+0] "
" ).z < 0.0;"
" if(first) break;"
" }"
" if(first && !front_facing[ft]) return;"
" }"
" int o = ft*3;"
" vec4 clip_plane[3];"
" for(int v=0; v!=3; ++v)"
" {"
" int w = (v+1)%3;"
" vec3 p0 = world_pos[o+v].xyz;"
" vec3 p1 = world_pos[o+w].xyz;"
" vec3 p2 = CameraPosition;"
" vec3 pv = normalize(cross(p1-p0, p2-p0));"
" clip_plane[v] = vec4(pv, -dot(pv, p0));"
" }"
" vec3 lo = CameraPosition;"
" vec3 p0 = world_pos[o+0].xyz;"
" vec3 pu = world_pos[o+1].xyz-p0;"
" vec3 pv = world_pos[o+2].xyz-p0;"
" vec3 lp = lo-p0;"
" float w0 = view_pos[o+0].w;"
" float wu = view_pos[o+1].w-w0;"
" float wv = view_pos[o+2].w-w0;"
" vec3 t0 = tex_coord[o+0];"
" vec3 tu = tex_coord[o+1]-t0;"
" vec3 tv = tex_coord[o+2]-t0;"
" for(int bt=0; bt!=8; ++bt)"
" {"
" int k = bt*3;"
" if((ft != bt) && !front_facing[bt])"
" {"
" for(int v=0; v!=3; ++v)"
" {"
" vec3 lt = world_pos[k+v].xyz;"
" mat3 im = mat3(lo-lt, pu, pv);"
" vec3 ic = inverse(im)*lp;"
" float s = ic.y;"
" float t = ic.z;"
" geomPositionFront[v] = p0+pu*s+pv*t;"
" geomTexCoordFront[v] = t0+tu*s+tv*t;"
" geomWFront[v] = w0+wu*s+wv*t;"
" }"
" for(int v=0; v!=3; ++v)"
" {"
" int w = k+v;"
" gl_Position = view_pos[w];"
" for(int c=0; c!=3; ++c)"
" {"
" gl_ClipDistance[c] = dot("
" clip_plane[c],"
" world_pos[w]"
" );"
" }"
" geomPosition = world_pos[w].xyz;"
" geomTexCoord = tex_coord[w];"
" geomBarycentric = vec3(0.0);"
" geomBarycentric[v] = 1.0;"
" EmitVertex();"
" }"
" EndPrimitive();"
" }"
" }"
"}"
)).Compile();
prog.AttachShader(gs);
FragmentShader fs;
fs.Source(StrCRef(
"#version 330\n"
"uniform float Time;"
"uniform sampler2D ColorMap;"
"uniform sampler2D BumpMap;"
"uniform vec3 LightPosition;"
"flat in mat3 geomPositionFront;"
"flat in mat3 geomTexCoordFront;"
"flat in vec3 geomWFront;"
"noperspective in vec3 geomBarycentric;"
"in vec3 geomPosition;"
"in vec3 geomTexCoord;"
"out vec3 fragColor;"
"vec3 vcdiv(vec3 a, vec3 b)"
"{"
" return vec3(a.x/b.x, a.y/b.y, a.z/b.z);"
"}"
"void main(void)"
"{"
" const vec3 one = vec3(1.0, 1.0, 1.0);"
" vec3 bzfv = vcdiv(geomBarycentric,geomWFront);"
" vec3 p0 = geomPosition;"
" vec3 p1 = (geomPositionFront*bzfv)/dot(one,bzfv);"
" vec3 tc0 = geomTexCoord;"
" vec3 tc1 = (geomTexCoordFront*bzfv)/dot(one,bzfv);"
" ivec2 ts = textureSize(BumpMap, 0);"
" int mts = max(ts.x, ts.y);"
" vec2 dtc = tc1.xy - tc0.xy;"
" float mdtc = max(abs(dtc.x), abs(dtc.y));"
" int nsam = max(min(int(mdtc*mts), mts/2), 1);"
" float step = 1.0 / nsam;"
" for(int s=0; s<=nsam; ++s)"
" {"
" vec3 tc = mix(tc1, tc0, s*step);"
" vec4 bm = texture(BumpMap, tc.xy);"
" if(tc.z <= bm.w)"
" {"
" vec3 p = mix(p1, p0, s*step);"
" vec3 ldir = normalize(LightPosition - p);"
" float l = max(dot(ldir, bm.xzy), 0.0)*1.3;"
" fragColor = texture(ColorMap, tc.xy).rgb*l;"
" return;"
" }"
" }"
" discard;"
"}"
)).Compile();
prog.AttachShader(fs);
prog.Link();
prog.Use();
return prog;
}
LiquidGeomShader(void)
: GeometryShader(
ObjectDesc("Liquid geometry shader"),
StrCRef("#version 330\n"
"layout(triangles_adjacency) in;"
"layout(triangle_strip, max_vertices = 4) out;"
"uniform mat4 CameraMatrix;"
"uniform vec3 CameraPosition, LightPosition;"
"in vec3 vertNormal[];"
"in float vertValue[];"
"out vec3 geomNormal, geomLightDir, geomViewDir;"
"void do_nothing(void){ }"
"float find_t(int i1, int i2)"
"{"
" float d = vertValue[i2] - vertValue[i1];"
" return -vertValue[i1]/d;"
"}"
"void make_vertex(int i1, int i2)"
"{"
" float t = find_t(i1, i2);"
" gl_Position = mix("
" gl_in[i1].gl_Position,"
" gl_in[i2].gl_Position,"
" t"
" );"
" geomNormal = mix("
" vertNormal[i1],"
" vertNormal[i2],"
" t"
" );"
" geomLightDir = LightPosition - gl_Position.xyz;"
" geomViewDir = CameraPosition - gl_Position.xyz;"
" gl_Position = CameraMatrix * gl_Position;"
" EmitVertex();"
"}"
"void make_triangle(int a1, int a2, int b1, int b2, int c1, int c2)"
"{"
" make_vertex(a1, a2);"
" make_vertex(b1, b2);"
" make_vertex(c1, c2);"
" EndPrimitive();"
"}"
"void make_quad(int a1,int a2,int b1,int b2,int c1,int c2,int d1,int d2)"
"{"
" make_vertex(a1, a2);"
" make_vertex(b1, b2);"
" make_vertex(c1, c2);"
" make_vertex(d1, d2);"
" EndPrimitive();"
"}"
"void process_tetrahedron(int a, int b, int c, int d)"
"{"
" if(vertValue[a] >= 0.0)"
" {"
" if(vertValue[b] >= 0.0)"
" {"
" if(vertValue[c] >= 0.0)"
" {"
" if(vertValue[d] >= 0.0)"
" do_nothing();"
" else make_triangle(d,a, d,b, d,c);"
" }"
" else"
" {"
" if(vertValue[d] >= 0.0)"
" make_triangle(c,a, c,d, c,b);"
" else make_quad(c,a, d,a, c,b, d,b);"
" }"
" }"
" else"
" {"
" if(vertValue[c] >= 0.0)"
" {"
" if(vertValue[d] >= 0.0)"
" make_triangle(b,c, b,d, b,a);"
" else make_quad(b,c, d,c, b,a, d,a);"
" }"
" else"
" {"
" if(vertValue[d] >= 0.0)"
" make_quad(c,a, c,d, b,a, b,d);"
" else make_triangle(c,a, d,a, b,a);"
" }"
" }"
" }"
" else"
" {"
" if(vertValue[b] >= 0.0)"
" {"
" if(vertValue[c] >= 0.0)"
" {"
" if(vertValue[d] >= 0.0)"
" make_triangle(a,b, a,d, a,c);"
" else make_quad(a,c, a,b, d,c, d,b);"
" }"
" else"
" {"
" if(vertValue[d] >= 0.0)"
" make_quad(a,b, a,d, c,b, c,d);"
" else make_triangle(a,b, d,b, c,b);"
" }"
" }"
" else"
" {"
" if(vertValue[c] >= 0.0)"
" {"
" if(vertValue[d] >= 0.0)"
" make_quad(b,c, b,d, a,c, a,d);"
" else make_triangle(b,c, d,c, a,c);"
" }"
" else"
" {"
" if(vertValue[d] >= 0.0)"
" make_triangle(a,d, c,d, b,d);"
" else do_nothing();"
" }"
" }"
" }"
"}"
"void main(void)"
"{"
" process_tetrahedron(0, 2, 4, 1);"
"}")
)
{ }
ShapeFragShader(void)
: FragmentShader(
ObjectDesc("Shape fragment shader"),
StrCRef("#version 330\n"
"const int LightCount = 32;"
"uniform vec3 Color1, Color2;"
"uniform vec3 LightPosition[LightCount];"
"uniform sampler2D MetalTex;"
"in vec3 vertPosition;"
"in vec3 vertViewDir;"
"in vec3 vertNormal;"
"in vec3 vertTangent;"
"in vec3 vertBitangent;"
"in vec2 vertTexCoord;"
"out vec3 fragColor;"
"const vec3 LightColor = vec3(1.0, 1.0, 1.0);"
"void main(void)"
"{"
" vec4 Sample = texture(MetalTex, vertTexCoord);"
" vec3 fragNormal = normalize("
" (Sample.b + 0.5)*vertNormal + "
" (Sample.r - 0.5)*vertTangent + "
" (Sample.g - 0.5)*vertBitangent"
" );"
" float Specular = 0.0, Diffuse = 0.0;"
" for(int l=0; l!=LightCount; ++l)"
" {"
" vec3 LightDir = normalize(LightPosition[l]-vertPosition);"
" vec3 LightRefl = reflect("
" -LightDir,"
" fragNormal"
" );"
" Specular += pow(max(dot("
" normalize(LightRefl),"
" normalize(vertViewDir)"
" )+0.04, 0.0), 32+Sample.b*32)*pow(0.4+Sample.b*1.6, 4.0);"
" Diffuse += pow(max(dot("
" LightDir, "
" normalize(vertNormal*2.0 + fragNormal)"
" ), 0.0), 2.0);"
" }"
" float Ambient = 0.1;"
" Diffuse /= LightCount;"
" Specular /= sqrt(float(LightCount));"
" vec3 Color = mix(Color1, Color2, Sample.b);"
" fragColor = "
" Color * Ambient +"
" Color * Diffuse +"
" LightColor * Specular;"
"}")
)
{ }
LiquidGeomShader(void)
: GeometryShader(
ObjectDesc("Liquid geometry shader"),
StrCRef("#version 330\n"
"layout(triangles_adjacency) in;"
"layout(triangle_strip, max_vertices = 4) out;"
"uniform isampler1D Configurations;"
"uniform mat4 CameraMatrix;"
"uniform vec3 CameraPosition, LightPosition;"
"in vec3 vertNormal[];"
"in float vertValue[];"
"flat in int vertSign[];"
"out vec3 geomNormal, geomLightDir, geomViewDir;"
"void make_vertex(int i1, int i2)"
"{"
" float t = vertValue[i1]/(vertValue[i1] - vertValue[i2]);"
" gl_Position = mix("
" gl_in[i1].gl_Position,"
" gl_in[i2].gl_Position,"
" t"
" );"
" geomNormal = mix("
" vertNormal[i1],"
" vertNormal[i2],"
" t"
" );"
" geomLightDir = LightPosition - gl_Position.xyz;"
" geomViewDir = CameraPosition - gl_Position.xyz;"
" gl_Position = CameraMatrix * gl_Position;"
" EmitVertex();"
"}"
"void make_triangle(const ivec4 v1, const ivec4 v2)"
"{"
" make_vertex(v1.x, v2.x);"
" make_vertex(v1.y, v2.y);"
" make_vertex(v1.z, v2.z);"
" EndPrimitive();"
"}"
"void make_quad(const ivec4 v1, const ivec4 v2)"
"{"
" make_vertex(v1.x, v2.x);"
" make_vertex(v1.y, v2.y);"
" make_vertex(v1.z, v2.z);"
" make_vertex(v1.w, v2.w);"
" EndPrimitive();"
"}"
"void process_tetrahedron(int a, int b, int c, int d)"
"{"
" ivec4 i = ivec4(vertSign[a],vertSign[b],vertSign[c],vertSign[d]);"
" int si = int(dot(i, ivec4(1, 1, 1, 1))) % 4;"
" if(si != 0)"
" {"
" int iv = int(dot(i, ivec4(16, 8, 4, 2)));"
" ivec4 v1 = texelFetch(Configurations, iv+0, 0);"
" ivec4 v2 = texelFetch(Configurations, iv+1, 0);"
" if(si % 2 == 0) make_quad(v1, v2);"
" else make_triangle(v1, v2);"
" }"
"}"
"void main(void)"
"{"
" process_tetrahedron(0, 2, 4, 1);"
"}")
)
{
Texture::Active(0);
{
const GLubyte a = 0x0, b = 0x2, c = 0x4, d = 0x1, x = 0xFF;
const GLubyte tex_data[] = {
x, x, x, x, x, x, x, x,
a, c, b, x, d, d, d, x,
b, d, a, x, c, c, c, x,
b, b, a, a, c, d, c, d,
a, d, c, x, b, b, b, x,
a, a, c, c, b, d, b, d,
a, a, d, d, c, b, c, b,
a, a, a, x, b, d, c, x,
c, d, b, x, a, a, a, x,
c, c, b, b, a, d, a, d,
b, d, b, d, c, c, a, a,
b, b, b, x, c, d, a, x,
c, d, c, d, a, a, b, b,
c, c, c, x, a, d, b, x,
d, d, d, x, a, b, c, x,
x, x, x, x, x, x, x, x
};
oglplus::Context::Bound(Texture::Target::_1D, _configurations)
.Image1D(
0,
PixelDataInternalFormat::RGBA8UI,
sizeof(tex_data),
0,
PixelDataFormat::RGBAInteger,
PixelDataType::UnsignedByte,
tex_data
)
.MinFilter(TextureMinFilter::Nearest)
.MagFilter(TextureMagFilter::Nearest)
.WrapS(TextureWrap::ClampToEdge);
}
}
inline StrCRef ValueName_(GLenum*, GLenum)
{
return StrCRef();
}
// The part calculating the color for the neutrons
static StrCRef fs_neutron(void)
{
return StrCRef(
" bool sig = false;"
" vec3 color = vec3(0.5, 0.5, 0.5);");
}
