comparison: src/gl/gridprogram.cpp
src/gl/gridprogram.cpp
- changeset 155
- 13713fadbf14
- parent 118
- 8e1c9f18ae15
- child 156
- 65b75beed7e0
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replaced
| 154:47cb50cfa9ad | 155:13713fadbf14 |
|---|---|
| 50 float dx = fract(ex_uv.y / 0.001f); | 50 float dx = fract(ex_uv.y / 0.001f); |
| 51 float dy = fract(ex_uv.x / 0.001f); | 51 float dy = fract(ex_uv.x / 0.001f); |
| 52 /* compute distance to nearest unit line */ | 52 /* compute distance to nearest unit line */ |
| 53 float d = min(min(min(dy, dx), 1 - dy), 1 - dx); | 53 float d = min(min(min(dy, dx), 1 - dy), 1 - dx); |
| 54 /* use an extreme sigmoid to bring out the grid shape */ | 54 /* use an extreme sigmoid to bring out the grid shape */ |
| 55 d = pow(1 - d, 50); | 55 d = pow(1.02 - d, 100); |
| 56 /* fade the grid towards extreme co-ordinates */ | 56 /* fade the grid towards extreme co-ordinates */ |
| 57 d = (1.0f - 20 * max(abs(ex_uv.x), abs(ex_uv.y))) * d; | 57 d = (1.0f - 20 * max(abs(ex_uv.x), abs(ex_uv.y))) * d; |
| 58 /* add dashes */ | 58 /* add dashes */ |
| 59 d *= (1 + cos(ex_uv.y / 0.0001f * pi)) * 0.5f; | 59 d *= (1 + pow(cos((ex_uv.y / 0.0001f) * pi), 10)) * 0.5f; |
| 60 d *= (1 + cos(ex_uv.x / 0.0001f * pi)) * 0.5f; | 60 d *= (1 + pow(cos((ex_uv.x / 0.0001f) * pi), 10)) * 0.5f; |
| 61 color = vec4(gridColor.xyz, gridColor.w * d); | 61 color = vec4(gridColor.xyz, gridColor.w * d); |
| 62 } | 62 } |
| 63 )"; | 63 )"; |
| 64 | 64 |
| 65 static const glm::vec2 data[] = {{-1, -1}, {-1, 1}, {1, 1}, {1, -1}}; | 65 static const glm::vec2 data[] = {{-1, -1}, {-1, 1}, {1, 1}, {1, -1}}; |
