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Differential D16452 Diff 58434 source/blender/draw/engines/overlay/shaders/overlay_edit_uv_edges_vert_no_geom.glsl

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source/blender/draw/engines/overlay/shaders/overlay_edit_uv_edges_vert_no_geom.glsl

Show All 35 Lines else {
DISCARD_VERTEX DISCARD_VERTEX
} }
/* Read vertex attributes for line prims. */ /* Read vertex attributes for line prims. */
vec2 root_au0 = vertex_fetch_attribute(base_vertex_id, au, vec2); vec2 root_au0 = vertex_fetch_attribute(base_vertex_id, au, vec2);
vec2 root_au1 = vertex_fetch_attribute(base_vertex_id + 1, au, vec2); vec2 root_au1 = vertex_fetch_attribute(base_vertex_id + 1, au, vec2);
int root_flag0 = vertex_fetch_attribute(base_vertex_id, flag, int); int root_flag0 = vertex_fetch_attribute(base_vertex_id, flag, int);
int root_flag1 = vertex_fetch_attribute(base_vertex_id + 1, flag, int); int root_flag1 = vertex_fetch_attribute(base_vertex_id + 1, flag, int);
/* Vertex shader per input vertex. */ /* Vertex shader per input vertex. */
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Do not use gl_ prefix. These are reserved and might cause compilation issue on some implementation. Use ndc_pos instead.

fclem: Do not use `gl_` prefix. These are reserved and might cause compilation issue on some…
vec3 world_pos0 = point_object_to_world(vec3(root_au0, 0.0)); vec3 world_pos0 = point_object_to_world(vec3(root_au0, 0.0));
vec3 world_pos1 = point_object_to_world(vec3(root_au1, 0.0)); vec3 world_pos1 = point_object_to_world(vec3(root_au1, 0.0));
vec4 gl_pos0 = point_world_to_ndc(world_pos0); vec4 ndc_pos0 = point_world_to_ndc(world_pos0);
vec4 gl_pos1 = point_world_to_ndc(world_pos1); vec4 ndc_pos1 = point_world_to_ndc(world_pos1);
/* Snap vertices to the pixel grid to reduce artifacts. */ /* Snap vertices to the pixel grid to reduce artifacts. */
vec2 half_viewport_res = sizeViewport * 0.5; vec2 half_viewport_res = sizeViewport * 0.5;
vec2 half_pixel_offset = sizeViewportInv * 0.5; vec2 half_pixel_offset = sizeViewportInv * 0.5;
gl_pos0.xy = floor(gl_pos0.xy * half_viewport_res) / half_viewport_res + half_pixel_offset; ndc_pos0.xy = floor(ndc_pos0.xy * half_viewport_res) / half_viewport_res + half_pixel_offset;
gl_pos1.xy = floor(gl_pos1.xy * half_viewport_res) / half_viewport_res + half_pixel_offset; ndc_pos1.xy = floor(ndc_pos1.xy * half_viewport_res) / half_viewport_res + half_pixel_offset;
#ifdef USE_EDGE_SELECT #ifdef USE_EDGE_SELECT
bool is_select0 = (root_flag0 & EDGE_UV_SELECT) != 0; bool is_select0 = (root_flag0 & EDGE_UV_SELECT) != 0;
bool is_select1 = (root_flag1 & EDGE_UV_SELECT) != 0; bool is_select1 = (root_flag1 & EDGE_UV_SELECT) != 0;
#else #else
bool is_select0 = (root_flag0 & VERT_UV_SELECT) != 0; bool is_select0 = (root_flag0 & VERT_UV_SELECT) != 0;
bool is_select1 = (root_flag1 & VERT_UV_SELECT) != 0; bool is_select1 = (root_flag1 & VERT_UV_SELECT) != 0;
#endif #endif
float selectionFac0 = is_select0 ? 1.0 : 0.0; // out float selectionFac; float selectionFac0 = is_select0 ? 1.0 : 0.0; // out float selectionFac;
float selectionFac1 = is_select1 ? 1.0 : 0.0; // out float selectionFac; float selectionFac1 = is_select1 ? 1.0 : 0.0; // out float selectionFac;
#ifdef USE_EDGE_SELECT #ifdef USE_EDGE_SELECT
/* No blending with edge selection. */ /* No blending with edge selection. */
selectionFac1 = selectionFac0; selectionFac1 = selectionFac0;
#endif #endif
/* Move selected edges to the top /* Move selected edges to the top
* Vertices are between 0.0 and 0.2, Edges between 0.2 and 0.4 * Vertices are between 0.0 and 0.2, Edges between 0.2 and 0.4
* actual pixels are at 0.75, 1.0 is used for the background. */ * actual pixels are at 0.75, 1.0 is used for the background. */
float depth0 = is_select0 ? 0.25 : 0.35; float depth0 = is_select0 ? 0.25 : 0.35;
float depth1 = is_select1 ? 0.25 : 0.35; float depth1 = is_select1 ? 0.25 : 0.35;
gl_pos0.z = depth0; ndc_pos0.z = depth0;
gl_pos1.z = depth1; ndc_pos1.z = depth1;
/* Avoid precision loss. */ /* Avoid precision loss. */
vec2 stipplePos0 = 500.0 + 500.0 * (gl_pos0.xy / gl_pos0.w); vec2 stipplePos0 = 500.0 + 500.0 * (ndc_pos0.xy / ndc_pos0.w);
vec2 stipplePos1 = 500.0 + 500.0 * (gl_pos1.xy / gl_pos1.w); vec2 stipplePos1 = 500.0 + 500.0 * (ndc_pos1.xy / ndc_pos1.w);
vec2 stippleStart0 = stipplePos0; vec2 stippleStart0 = stipplePos0;
vec2 stippleStart1 = stipplePos1; vec2 stippleStart1 = stipplePos1;
/* Geometry shader equivalent calculations. */ /* Geometry shader equivalent calculations. */
vec2 ss_pos[2]; vec2 ss_pos[2];
ss_pos[0] = gl_pos0.xy / gl_pos0.w; ss_pos[0] = ndc_pos0.xy / ndc_pos0.w;
ss_pos[1] = gl_pos1.xy / gl_pos1.w; ss_pos[1] = ndc_pos1.xy / ndc_pos1.w;
float half_size = sizeEdge; float half_size = sizeEdge;
/* Enlarge edge for outline drawing. */ /* Enlarge edge for outline drawing. */
/* Factor of 3.0 out of nowhere! Seems to fix issues with float imprecision. */ /* Factor of 3.0 out of nowhere! Seems to fix issues with float imprecision. */
half_size += (lineStyle == OVERLAY_UV_LINE_STYLE_OUTLINE) ? half_size += (lineStyle == OVERLAY_UV_LINE_STYLE_OUTLINE) ?
max(sizeEdge * (doSmoothWire ? 1.0 : 3.0), 1.0) : max(sizeEdge * (doSmoothWire ? 1.0 : 3.0), 1.0) :
0.0; 0.0;
/* Add 1 px for AA */ /* Add 1 px for AA */
if (doSmoothWire) { if (doSmoothWire) {
half_size += 0.5; half_size += 0.5;
} }
vec2 line = ss_pos[0] - ss_pos[1]; vec2 line = ss_pos[0] - ss_pos[1];
vec2 line_dir = normalize(line); vec2 line_dir = normalize(line);
vec2 line_perp = vec2(-line_dir.y, line_dir.x); vec2 line_perp = vec2(-line_dir.y, line_dir.x);
vec2 edge_ofs = line_perp * sizeViewportInv * ceil(half_size); vec2 edge_ofs = line_perp * sizeViewportInv * ceil(half_size);
switch (quad_vertex_id) { switch (quad_vertex_id) {
case 1: /* vertex A */ case 1: /* vertex A */
case 3: case 3:
do_vertex(gl_pos1, selectionFac1, stippleStart1, stipplePos1, half_size, edge_ofs.xy); do_vertex(ndc_pos1, selectionFac1, stippleStart1, stipplePos1, half_size, edge_ofs.xy);
break; break;
case 0: /* B */ case 0: /* B */
do_vertex(gl_pos0, selectionFac0, stippleStart0, stipplePos0, half_size, edge_ofs.xy); do_vertex(ndc_pos0, selectionFac0, stippleStart0, stipplePos0, half_size, edge_ofs.xy);
break; break;
case 2: /* C */ case 2: /* C */
case 4: case 4:
do_vertex(gl_pos0, selectionFac0, stippleStart0, stipplePos0, -half_size, -edge_ofs.xy); do_vertex(ndc_pos0, selectionFac0, stippleStart0, stipplePos0, -half_size, -edge_ofs.xy);
break; break;
case 5: /* D */ case 5: /* D */
do_vertex(gl_pos1, selectionFac1, stippleStart1, stipplePos1, -half_size, -edge_ofs.xy); do_vertex(ndc_pos1, selectionFac1, stippleStart1, stipplePos1, -half_size, -edge_ofs.xy);
break; break;
} }
} }