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sculpt: fix symmetry and xray

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This commit is contained in:
luboslenco
2026-07-06 11:33:52 +02:00
parent dcb071aac7
commit 166071523d
2 changed files with 67 additions and 15 deletions
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paint/sources/render/make_sculpt.c
+27 -1
View File
@@ -162,7 +162,7 @@ node_shader_context_t *sculpt_make_sculpt_run(material_t *data, material_context
bool particle = g_context->tool == TOOL_TYPE_PARTICLE;
// Decal fill layer: displacement must be confined to the decal box projection
bool decal_layer = g_context->layer->fill_material != NULL && g_context->layer->uv_type == UV_TYPE_PROJECT && g_context->tool == TOOL_TYPE_FILL;
bool sculpt_triplanar = !decal && !decal_layer && (g_context->tool == TOOL_TYPE_FILL || g_context->layer->fill_material != NULL);
bool sculpt_triplanar = !decal && !decal_layer && g_context->tool != TOOL_TYPE_BLUR;
node_shader_add_out(kong, "tex_coord: float2");
node_shader_write_vert(kong, "var madd: float2 = float2(0.5, 0.5);");
node_shader_write_vert(kong, "output.tex_coord = input.pos.xy * madd + madd;");
@@ -220,12 +220,28 @@ node_shader_context_t *sculpt_make_sculpt_run(material_t *data, material_context
node_shader_write_frag(kong, "if (dist > 1.0) { discard; }");
}
else if (!decal) {
if (g_context->xray) {
node_shader_write_frag(kong, "var xray_ndc: float2 = float2(constants.inp.x, 1.0 - constants.inp.y) * 2.0 - 1.0;");
node_shader_write_frag(kong, "var xray_near: float4 = constants.invVP * float4(xray_ndc, 0.0, 1.0);");
node_shader_write_frag(kong, "var xray_far: float4 = constants.invVP * float4(xray_ndc, 1.0, 1.0);");
node_shader_write_frag(kong, "var xray_axis: float3 = normalize(xray_far.xyz / xray_far.w - xray_near.xyz / xray_near.w);");
}
if (g_context->brush_lazy_radius > 0 && g_context->brush_lazy_step > 0) { // Sphere
if (g_context->xray) {
node_shader_write_frag(kong, "var pa: float3 = wposition.xyz - winp.xyz;");
node_shader_write_frag(kong, "dist = length(pa - xray_axis * dot(xray_axis, pa));");
}
else {
node_shader_write_frag(kong, "dist = distance(wposition.xyz, winp.xyz);");
}
}
else { // Capsule
node_shader_write_frag(kong, "var pa: float3 = wposition.xyz - winp.xyz;");
node_shader_write_frag(kong, "var ba: float3 = winplast.xyz - winp.xyz;");
if (g_context->xray) {
node_shader_write_frag(kong, "pa = pa - xray_axis * dot(xray_axis, pa);");
node_shader_write_frag(kong, "ba = ba - xray_axis * dot(xray_axis, ba);");
}
node_shader_write_frag(kong, "var h: float = clamp(dot(pa, ba) / dot(ba, ba), 0.0, 1.0);");
node_shader_write_frag(kong, "dist = length(pa - ba * h);");
}
@@ -581,6 +597,16 @@ node_shader_context_t *sculpt_make_sculpt_run(material_t *data, material_context
node_shader_write_frag(kong, "wn.z = 1.0 - abs(g0_undo.x) - abs(g0_undo.y);");
node_shader_write_frag(kong, "if (wn.z >= 0.0) { wn.xy = g0_undo.xy; } else { wn.xy = octahedron_wrap(g0_undo.xy); }");
node_shader_write_frag(kong, "var n: float3 = normalize(wn);");
node_shader_add_constant(kong, "sculpt_symmetry_reflect: float4x4", "_sculpt_symmetry_reflect");
node_shader_write_frag(kong, "n = normalize((constants.sculpt_symmetry_reflect * float4(n, 0.0)).xyz);");
if (g_context->xray) {
node_shader_write_frag(kong, "var xray_nnv: float = floor(raw_undo.a) / 255.0;");
node_shader_write_frag(kong, "var xray_noct: float2 = float2(raw_undo.a - floor(raw_undo.a), xray_nnv) * 2.0 - 1.0;");
node_shader_write_frag(kong, "var xray_nnz: float = 1.0 - abs(xray_noct.x) - abs(xray_noct.y);");
node_shader_write_frag(kong, "var xray_fnor: float3 = float3(xray_noct.xy, xray_nnz);");
node_shader_write_frag(kong, "if (xray_nnz < 0.0) { xray_fnor.xy = octahedron_wrap(xray_noct.xy); }");
node_shader_write_frag(kong, "n = normalize((constants.W * float4(normalize(xray_fnor), 0.0)).xyz);");
}
}
if (g_context->tool == TOOL_TYPE_BLUR) {
// Even out the surface by relaxing each vertex toward the cursors tangent plane
paint/sources/uniforms.c
+26
View File
@@ -307,6 +307,32 @@ vec4_t uniforms_ext_vec4_link(object_t *object, material_data_t *mat, char *link
}
mat4_t uniforms_ext_mat4_link(object_t *object, material_data_t *mat, char *link) {
if (string_equals(link, "_sculpt_symmetry_reflect")) {
transform_t *t = object->transform;
mat4_t W = t->world;
vec4_t axes[3] = {
vec4_norm((vec4_t){W.m00, W.m10, W.m20, 0.0}),
vec4_norm((vec4_t){W.m01, W.m11, W.m21, 0.0}),
vec4_norm((vec4_t){W.m02, W.m12, W.m22, 0.0}),
};
f32 scale[3] = {t->scale.x, t->scale.y, t->scale.z};
mat4_t F = mat4_identity();
for (i32 i = 0; i < 3; ++i) {
if (scale[i] < 0.0f) {
vec4_t a = axes[i];
F.m00 -= 2.0f * a.x * a.x;
F.m01 -= 2.0f * a.x * a.y;
F.m02 -= 2.0f * a.x * a.z;
F.m10 -= 2.0f * a.y * a.x;
F.m11 -= 2.0f * a.y * a.y;
F.m12 -= 2.0f * a.y * a.z;
F.m20 -= 2.0f * a.z * a.x;
F.m21 -= 2.0f * a.z * a.y;
F.m22 -= 2.0f * a.z * a.z;
}
}
return F;
}
if (string_equals(link, "_decal_layer_matrix")) { // Decal layer
mat4_t m = mat4_inv(g_context->layer->decal_mat);
f32 parent_scale = object->parent != NULL ? object->parent->transform->scale.x : 1.0;