Germano Cavalcante
7d78474941
It was committed an earlier version of the patch which missed these changes. Differential Revision: https://developer.blender.org/D4700
92 lines
2.4 KiB
GLSL
92 lines
2.4 KiB
GLSL
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layout(lines) in;
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layout(triangle_strip, max_vertices = 4) out;
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uniform vec2 viewportSize;
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uniform vec2 viewportSizeInv;
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in vec4 finalColor[2];
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in vec4 finalColorOuter[2];
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in int selectOveride[2];
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flat out vec4 finalColorOuter_f;
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out vec4 finalColor_f;
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noperspective out float edgeCoord_f;
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void do_vertex(vec4 color, vec4 pos, float coord, vec2 offset)
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{
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finalColor_f = color;
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edgeCoord_f = coord;
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gl_Position = pos;
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/* Multiply offset by 2 because gl_Position range is [-1..1]. */
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gl_Position.xy += offset * 2.0 * pos.w;
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/* Correct but fails due to an AMD compiler bug, see: T62792.
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* Do inline instead. */
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#if 0
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world_clip_planes_set_clip_distance(gl_in[i].gl_ClipDistance);
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#endif
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EmitVertex();
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}
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void main()
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{
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vec2 ss_pos[2];
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/* Clip line against near plane to avoid deformed lines. */
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vec4 pos0 = gl_in[0].gl_Position;
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vec4 pos1 = gl_in[1].gl_Position;
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vec2 pz_ndc = vec2(pos0.z / pos0.w, pos1.z / pos1.w);
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bvec2 clipped = lessThan(pz_ndc, vec2(-1.0));
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if (all(clipped)) {
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/* Totally clipped. */
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return;
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}
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vec4 pos01 = pos0 - pos1;
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float ofs = abs((pz_ndc.y + 1.0) / (pz_ndc.x - pz_ndc.y));
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if (clipped.y) {
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pos1 += pos01 * ofs;
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}
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else if (clipped.x) {
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pos0 -= pos01 * (1.0 - ofs);
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}
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ss_pos[0] = pos0.xy / pos0.w;
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ss_pos[1] = pos1.xy / pos1.w;
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vec2 line = ss_pos[0] - ss_pos[1];
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line = abs(line) * viewportSize;
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finalColorOuter_f = finalColorOuter[0];
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float half_size = sizeEdge;
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/* Enlarge edge for flag display. */
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half_size += (finalColorOuter_f.a > 0.0) ? max(sizeEdge, 1.0) : 0.0;
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#ifdef USE_SMOOTH_WIRE
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/* Add 1 px for AA */
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half_size += 0.5;
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#endif
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vec3 edge_ofs = half_size * viewportSizeInv.xyy * vec3(1.0, 1.0, 0.0);
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bool horizontal = line.x > line.y;
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edge_ofs = (horizontal) ? edge_ofs.zyz : edge_ofs.xzz;
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#ifdef USE_WORLD_CLIP_PLANES
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/* Due to an AMD glitch, this line was moved out of the `do_vertex`
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* function (see T62792). */
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world_clip_planes_set_clip_distance(gl_in[0].gl_ClipDistance);
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#endif
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do_vertex(finalColor[0], pos0, half_size, edge_ofs.xy);
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do_vertex(finalColor[0], pos0, -half_size, -edge_ofs.xy);
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#ifdef USE_WORLD_CLIP_PLANES
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world_clip_planes_set_clip_distance(gl_in[1].gl_ClipDistance);
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#endif
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vec4 final_color = (selectOveride[0] == 0) ? finalColor[1] : finalColor[0];
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do_vertex(final_color, pos1, half_size, edge_ofs.xy);
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do_vertex(final_color, pos1, -half_size, -edge_ofs.xy);
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EndPrimitive();
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}
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