comparison: shader/rectangle_frag.glsl
shader/rectangle_frag.glsl
- changeset 158
- f650994ec543
- parent 157
- d6c2f028d8c9
equal
deleted
inserted
replaced
| 157:d6c2f028d8c9 | 158:f650994ec543 |
|---|---|
| 4 uniform vec4 color; | 4 uniform vec4 color; |
| 5 uniform vec2 size; | 5 uniform vec2 size; |
| 6 #ifndef FILL | 6 #ifndef FILL |
| 7 uniform float thickness; | 7 uniform float thickness; |
| 8 #endif | 8 #endif |
| 9 #ifdef ROUNDED_CORNERS | |
| 10 uniform float radius; | |
| 11 #endif | |
| 9 | 12 |
| 10 void main(void) { | 13 void main(void) { |
| 11 #ifdef FILL | 14 #ifdef ROUNDED_CORNERS |
| 15 // Calculate distances from each corner | |
| 16 vec2 corner_distances[4]; | |
| 17 corner_distances[0] = uvcoord - vec2(radius, radius); // top-left | |
| 18 corner_distances[1] = uvcoord - vec2(size.x - radius, radius); // top-right | |
| 19 corner_distances[2] = uvcoord - vec2(radius, size.y - radius); // bottom-left | |
| 20 corner_distances[3] = uvcoord - vec2(size.x - radius, size.y - radius); // bottom-right | |
| 21 | |
| 22 // Check if we're in a corner region | |
| 23 bool in_corner_region = false; | |
| 24 int corner_idx = -1; | |
| 25 | |
| 26 for (int i = 0; i < 4; i++) { | |
| 27 vec2 test_point = corner_distances[i]; | |
| 28 vec2 corner_test = vec2(0.0); | |
| 29 | |
| 30 if (i == 0 && test_point.x < 0.0 && test_point.y < 0.0) { // top-left | |
| 31 corner_test = test_point; | |
| 32 corner_idx = i; | |
| 33 in_corner_region = true; | |
| 34 break; | |
| 35 } else if (i == 1 && test_point.x > 0.0 && test_point.y < 0.0) { // top-right | |
| 36 corner_test = test_point; | |
| 37 corner_idx = i; | |
| 38 in_corner_region = true; | |
| 39 break; | |
| 40 } else if (i == 2 && test_point.x < 0.0 && test_point.y > 0.0) { // bottom-left | |
| 41 corner_test = test_point; | |
| 42 corner_idx = i; | |
| 43 in_corner_region = true; | |
| 44 break; | |
| 45 } else if (i == 3 && test_point.x > 0.0 && test_point.y > 0.0) { // bottom-right | |
| 46 corner_test = test_point; | |
| 47 corner_idx = i; | |
| 48 in_corner_region = true; | |
| 49 break; | |
| 50 } | |
| 51 } | |
| 52 | |
| 53 #ifdef FILL | |
| 54 // For filled rectangle with rounded corners | |
| 55 if (in_corner_region) { | |
| 56 float dist = length(corner_distances[corner_idx]); | |
| 57 if (dist > radius) { | |
| 58 discard; // Outside the rounded corner | |
| 59 } | |
| 60 } else if (uvcoord.x < 0.0 || uvcoord.y < 0.0 || uvcoord.x > size.x || uvcoord.y > size.y) { | |
| 61 discard; // Outside the rectangle | |
| 62 } | |
| 12 diffuse = color; | 63 diffuse = color; |
| 13 #else | 64 #else // no FILL |
| 65 // For outlined rectangle with rounded corners | |
| 66 if (in_corner_region) { | |
| 67 float dist = length(corner_distances[corner_idx]); | |
| 68 if (dist > radius) { | |
| 69 discard; // Outside the rounded corner | |
| 70 } else if (dist < radius - thickness) { | |
| 71 discard; // Inside the outline | |
| 72 } | |
| 73 diffuse = color; | |
| 74 } else if (any(lessThan(uvcoord, vec2(thickness))) || any(greaterThan(uvcoord, size - thickness))) { | |
| 75 // On a straight edge | |
| 76 if (uvcoord.x >= 0.0 && uvcoord.y >= 0.0 && uvcoord.x <= size.x && uvcoord.y <= size.y) { | |
| 77 diffuse = color; | |
| 78 } else { | |
| 79 discard; | |
| 80 } | |
| 81 } else { | |
| 82 discard; // Inside the outline | |
| 83 } | |
| 84 #endif // FILL | |
| 85 #else // no ROUNDED_CORNERS | |
| 86 #ifdef FILL | |
| 87 diffuse = color; | |
| 88 #else // no FILL | |
| 14 if (any(notEqual(1.0-step(thickness, uvcoord)+step(size-thickness, uvcoord), vec2(0.0)))) { | 89 if (any(notEqual(1.0-step(thickness, uvcoord)+step(size-thickness, uvcoord), vec2(0.0)))) { |
| 15 diffuse = color; | 90 diffuse = color; |
| 16 } else { | 91 } else { |
| 17 discard; | 92 discard; |
| 18 } | 93 } |
| 19 #endif | 94 #endif // FILL |
| 95 #endif // ROUNDED_CORNERS | |
| 20 } | 96 } |
