diff options
Diffstat (limited to 'gfx/gl/shaders/networkStraight.gs')
| -rw-r--r-- | gfx/gl/shaders/networkStraight.gs | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/gfx/gl/shaders/networkStraight.gs b/gfx/gl/shaders/networkStraight.gs index c2bfe3f..ccd456a 100644 --- a/gfx/gl/shaders/networkStraight.gs +++ b/gfx/gl/shaders/networkStraight.gs @@ -1,5 +1,14 @@ #version 330 core +const float RAIL_HEIGHT = 250; +const vec3[] profile = vec3[]( // + vec3(-1900.F, 0.F, 0.F), // + vec3(-608.F, 0.F, RAIL_HEIGHT), // + vec3(0, 0.F, RAIL_HEIGHT * .7F), // + vec3(608.F, 0.F, RAIL_HEIGHT), // + vec3(1900.F, 0.F, 0.F)); +const float[profile.length()] texturePos = float[](0, 0.34, 0.5, 0.65, 1); + flat in ivec3 apos[]; flat in ivec3 bpos[]; flat in mat2 rot[]; @@ -7,9 +16,36 @@ flat in float reps[]; flat in float dist[]; layout(points) in; -layout(triangle_strip, max_vertices = 20) out; +layout(triangle_strip, max_vertices = 10) out; + +uniform mat4 viewProjection; +uniform ivec3 viewPoint; + +uniform int clipDistance = 5000000; +uniform int flatDistance = 1000000; + +out vec2 texCoord; +out vec3 rposition; + +void +doEnd(const ivec3 end, int v, float texY) +{ + rposition = vec3(rot[0] * profile[v].xy, profile[v].z); + ivec3 vpos = end + ivec3(rposition); + gl_Position = viewProjection * vec4(vpos - viewPoint, 1); + texCoord = vec2(texturePos[v], texY); + EmitVertex(); +} void main() { + if (dist[0] < clipDistance) { + int vstep = (dist[0] < flatDistance) ? 1 : profile.length() - 1; + for (int v = 0; v < profile.length(); v += vstep) { + doEnd(bpos[0], v, reps[0]); + doEnd(apos[0], v, 0); + } + EndPrimitive(); + } } |