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Rewrote the OpenGL object rendering to indexed triangle / quad sets

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for lower memory consumption.
Rewrote the print path 3D preview to generate these indexed triangle / quad
sets, possibly with at least as possible duplication of vertices,
with a crease angle of 45 degrees, leading to maximum 8% overshoots
at the corners.
This commit is contained in:
bubnikv 2017-03-15 16:33:25 +01:00
parent e7a920fe16
commit d18e10c7c9
6 changed files with 414 additions and 566 deletions
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26
lib/Slic3r/GUI/3DScene.pm
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@ -1254,20 +1254,20 @@ sub draw_volumes {
glPushMatrix();
glTranslatef(@{$volume->origin});
glCullFace(GL_BACK);
my $qverts_cnt = $volume->qverts_to_render_cnt;
if ($qverts_cnt) {
glVertexPointer_c(3, GL_FLOAT, 0, $volume->qverts_to_render_ptr);
glNormalPointer_c(GL_FLOAT, 0, $volume->qnorms_to_render_ptr);
glDrawArrays(GL_QUADS, 0, $qverts_cnt / 3);
if ($volume->indexed) {
my $quads_cnt = $volume->indexed_quads_to_render_cnt;
my $triangles_cnt = $volume->indexed_triangles_to_render_cnt;
if ($quads_cnt + $triangles_cnt > 0) {
glInterleavedArrays_c(GL_N3F_V3F, 0, $volume->triangles_to_render_ptr);
glDrawElements_c(GL_QUADS, $quads_cnt, GL_UNSIGNED_INT, $volume->quad_indices_to_render_ptr ) if ($quads_cnt);
glDrawElements_c(GL_TRIANGLES, $triangles_cnt, GL_UNSIGNED_INT, $volume->triangle_indices_to_render_ptr) if ($triangles_cnt);
glInterleavedArrays_c(GL_N3F_V3F, 0, 0);
}
} elsif (! $volume->empty) {
glInterleavedArrays_c(GL_N3F_V3F, 0, $volume->triangles_to_render_ptr);
glDrawArrays(GL_TRIANGLES, 0, $volume->triangles_to_render_cnt);
glInterleavedArrays_c(GL_N3F_V3F, 0, 0);
}
my $tverts_cnt = $volume->tverts_to_render_cnt;
if ($tverts_cnt) {
glVertexPointer_c(3, GL_FLOAT, 0, $volume->tverts_to_render_ptr);
glNormalPointer_c(GL_FLOAT, 0, $volume->tnorms_to_render_ptr);
glDrawArrays(GL_TRIANGLES, 0, $tverts_cnt / 3);
}
glVertexPointer_c(3, GL_FLOAT, 0, 0);
glNormalPointer_c(GL_FLOAT, 0, 0);
glPopMatrix();
if ($shader_active) {