3D-printing/OrcaSlicer
1
0
Fork 0
mirror of https://github.com/SoftFever/OrcaSlicer.git synced 2025-07-15 02:37:51 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

Use Vertex Buffer Objects for rendering of 3D volumes if possible.

Browse source
This commit is contained in:
bubnikv 2017-03-16 14:02:28 +01:00
parent c32c7fa1dc
commit 7f7d2da5fe
8 changed files with 257 additions and 103 deletions
Download patch file Download diff file Expand all files Collapse all files

157
xs/src/slic3r/GUI/3DScene.cpp
View file

@ -1,3 +1,5 @@
#include <GL/glew.h>
#include "3DScene.hpp"
#include "../../libslic3r/libslic3r.h"
@ -21,6 +23,10 @@ namespace Slic3r {
void GLIndexedVertexArray::load_mesh_flat_shading(const TriangleMesh &mesh)
{
assert(triangle_indices.empty() && vertices_and_normals_interleaved_size == 0);
assert(quad_indices.empty() && triangle_indices_size == 0);
assert(vertices_and_normals_interleaved.size() % 6 == 0 && quad_indices_size == vertices_and_normals_interleaved.size());
this->vertices_and_normals_interleaved.reserve(this->vertices_and_normals_interleaved.size() + 3 * 3 * 2 * mesh.facets_count());
for (int i = 0; i < mesh.stl.stats.number_of_facets; ++ i) {
@ -28,6 +34,130 @@ void GLIndexedVertexArray::load_mesh_flat_shading(const TriangleMesh &mesh)
for (int j = 0; j < 3; ++ j)
this->push_geometry(facet.vertex[j].x, facet.vertex[j].y, facet.vertex[j].z, facet.normal.x, facet.normal.y, facet.normal.z);
}
vertices_and_normals_interleaved_size = this->vertices_and_normals_interleaved.size();
}
void GLIndexedVertexArray::finalize_geometry(bool use_VBOs)
{
assert(this->vertices_and_normals_interleaved_VBO_id == 0);
assert(this->triangle_indices_VBO_id == 0);
assert(this->quad_indices_VBO_id == 0);
this->setup_sizes();
if (use_VBOs) {
if (! empty()) {
glGenBuffers(1, &this->vertices_and_normals_interleaved_VBO_id);
glBindBuffer(GL_ARRAY_BUFFER, this->vertices_and_normals_interleaved_VBO_id);
glBufferData(GL_ARRAY_BUFFER, this->vertices_and_normals_interleaved.size() * 4, this->vertices_and_normals_interleaved.data(), GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
this->vertices_and_normals_interleaved.clear();
}
if (! this->triangle_indices.empty()) {
glGenBuffers(1, &this->triangle_indices_VBO_id);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->triangle_indices_VBO_id);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, this->triangle_indices.size() * 4, this->triangle_indices.data(), GL_STATIC_DRAW);
this->triangle_indices.clear();
}
if (! this->quad_indices.empty()) {
glGenBuffers(1, &this->quad_indices_VBO_id);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->quad_indices_VBO_id);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, this->quad_indices.size() * 4, this->quad_indices.data(), GL_STATIC_DRAW);
this->quad_indices.clear();
}
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
}
this->shrink_to_fit();
}
void GLIndexedVertexArray::release_geometry()
{
if (this->vertices_and_normals_interleaved_VBO_id)
glDeleteBuffers(1, &this->vertices_and_normals_interleaved_VBO_id);
if (this->triangle_indices_VBO_id)
glDeleteBuffers(1, &this->triangle_indices_VBO_id);
if (this->quad_indices_VBO_id)
glDeleteBuffers(1, &this->quad_indices_VBO_id);
this->clear();
this->shrink_to_fit();
}
void GLIndexedVertexArray::render() const
{
if (this->indexed()) {
if (this->vertices_and_normals_interleaved_VBO_id) {
// Render using the Vertex Buffer Objects.
glBindBuffer(GL_ARRAY_BUFFER, this->vertices_and_normals_interleaved_VBO_id);
glInterleavedArrays(GL_N3F_V3F, 0, nullptr);
if (this->triangle_indices_size > 0) {
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->triangle_indices_VBO_id);
glDrawElements(GL_TRIANGLES, GLsizei(this->triangle_indices_size), GL_UNSIGNED_INT, nullptr);
}
if (this->quad_indices_size > 0) {
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->quad_indices_VBO_id);
glDrawElements(GL_QUADS, GLsizei(this->quad_indices_size), GL_UNSIGNED_INT, nullptr);
}
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
} else {
// Render in an immediate mode.
glInterleavedArrays(GL_N3F_V3F, 0, this->vertices_and_normals_interleaved.data());
// Due to issues with the Intel drivers, rather limit the amount of vertices processed per draw command.
if (! this->triangle_indices.empty())
glDrawElements(GL_TRIANGLES, GLsizei(this->triangle_indices_size), GL_UNSIGNED_INT, this->triangle_indices.data());
if (! this->quad_indices.empty())
glDrawElements(GL_QUADS, GLsizei(this->quad_indices_size), GL_UNSIGNED_INT, this->quad_indices.data());
}
} else {
if (this->vertices_and_normals_interleaved_VBO_id) {
// Render using the Vertex Buffer Objects.
glBindBuffer(GL_ARRAY_BUFFER, this->vertices_and_normals_interleaved_VBO_id);
glInterleavedArrays(GL_N3F_V3F, 0, nullptr);
glDrawArrays(GL_TRIANGLES, 0, GLsizei(this->vertices_and_normals_interleaved_size / 6));
glBindBuffer(GL_ARRAY_BUFFER, 0);
} else {
// Render in an immediate mode.
glInterleavedArrays(GL_N3F_V3F, 0, this->vertices_and_normals_interleaved.data());
glDrawArrays(GL_TRIANGLES, 0, GLsizei(this->vertices_and_normals_interleaved_size / 6));
}
}
glInterleavedArrays(GL_N3F_V3F, 0, nullptr);
}
void GLIndexedVertexArray::render(
const std::pair<size_t, size_t> &tverts_range,
const std::pair<size_t, size_t> &qverts_range) const
{
assert(this->indexed());
if (! this->indexed())
return;
if (this->vertices_and_normals_interleaved_VBO_id) {
// Render using the Vertex Buffer Objects.
glBindBuffer(GL_ARRAY_BUFFER, this->vertices_and_normals_interleaved_VBO_id);
glInterleavedArrays(GL_N3F_V3F, 0, nullptr);
if (this->triangle_indices_size > 0) {
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->triangle_indices_VBO_id);
glDrawElements(GL_TRIANGLES, GLsizei(std::min(this->triangle_indices_size, tverts_range.second - tverts_range.first)), GL_UNSIGNED_INT, (const void*)(tverts_range.first * 4));
}
if (this->quad_indices_size > 0) {
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->quad_indices_VBO_id);
glDrawElements(GL_QUADS, GLsizei(std::min(this->quad_indices_size, qverts_range.second - qverts_range.first)), GL_UNSIGNED_INT, (const void*)(qverts_range.first * 4));
}
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
} else {
// Render in an immediate mode.
glInterleavedArrays(GL_N3F_V3F, 0, this->vertices_and_normals_interleaved.data());
if (! this->triangle_indices.empty())
glDrawElements(GL_TRIANGLES, GLsizei(std::min(this->triangle_indices_size, tverts_range.second - tverts_range.first)), GL_UNSIGNED_INT, (const void*)(this->triangle_indices.data() + tverts_range.first));
if (! this->quad_indices.empty())
glDrawElements(GL_QUADS, GLsizei(std::min(this->quad_indices_size, qverts_range.second - qverts_range.first)), GL_UNSIGNED_INT, (const void*)(this->quad_indices.data() + qverts_range.first));
}
glInterleavedArrays(GL_N3F_V3F, 0, nullptr);
}
void GLVolume::set_range(double min_z, double max_z)
@ -65,6 +195,18 @@ void GLVolume::set_range(double min_z, double max_z)
}
}
void GLVolume::render() const
{
glCullFace(GL_BACK);
glPushMatrix();
glTranslated(this->origin.x, this->origin.y, this->origin.z);
if (this->indexed_vertex_array.indexed())
this->indexed_vertex_array.render(this->tverts_range, this->qverts_range);
else
this->indexed_vertex_array.render();
glPopMatrix();
}
void GLVolume::generate_layer_height_texture(PrintObject *print_object, bool force)
{
GLTexture *tex = this->layer_height_texture.get();
@ -235,7 +377,6 @@ static void thick_lines_to_indexed_vertex_array(
idx_a[BOTTOM] = idx_prev[BOTTOM];
}
bool sharp = true;
if (ii == 0) {
// Start of the 1st line segment.
idx_a[LEFT ] = idx_last ++;
@ -490,6 +631,11 @@ static void extrusionentity_to_verts(const ExtrusionEntity *extrusion_entity, fl
}
}
void _3DScene::_glew_init()
{
glewInit();
}
// Create 3D thick extrusion lines for a skirt and brim.
// Adds a new Slic3r::GUI::3DScene::Volume to volumes.
void _3DScene::_load_print_toolpaths(
@ -539,6 +685,7 @@ void _3DScene::_load_print_toolpaths(
auto bb = print->bounding_box();
volume.bounding_box.merge(Pointf3(unscale(bb.min.x), unscale(bb.min.y), 0.f));
volume.bounding_box.merge(Pointf3(unscale(bb.max.x), unscale(bb.max.y), 0.f));
volume.indexed_vertex_array.finalize_geometry(use_VBOs);
}
// Create 3D thick extrusion lines for object forming extrusions.
@ -559,8 +706,10 @@ void _3DScene::_load_print_object_toolpaths(
bool has_infill;
bool has_support;
// static const size_t alloc_size_max () { return 32 * 1048576 / 4; }
static const size_t alloc_size_max () { return 4 * 1048576 / 4; }
// Number of vertices (each vertex is 6x4=24 bytes long)
static const size_t alloc_size_max () { return 131072; } // 3.15MB
// static const size_t alloc_size_max () { return 65536; } // 1.57MB
// static const size_t alloc_size_max () { return 32768; } // 786kB
static const size_t alloc_size_reserve() { return alloc_size_max() * 2; }
static const float* color_perimeters () { static float color[4] = { 1.0f, 1.0f, 0.0f, 1.f }; return color; } // yellow
@ -672,6 +821,8 @@ void _3DScene::_load_print_object_toolpaths(
volume_ptr += v.volumes.size();
v.volumes.clear();
}
for (GLVolume *v : volumes->volumes)
v->indexed_vertex_array.finalize_geometry(use_VBOs);
BOOST_LOG_TRIVIAL(debug) << "Loading print object toolpaths in parallel - end";
}