3D-printing/OrcaSlicer
1
0
Fork 0
mirror of https://github.com/SoftFever/OrcaSlicer.git synced 2025-10-30 12:11:15 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions 5
OrcaSlicer/src/slic3r/GUI/GLTexture.cpp

440 lines
14 KiB
C++
Raw Blame History

#include "libslic3r/libslic3r.h"
#include "GLTexture.hpp"
#include "3DScene.hpp"
#include <GL/glew.h>
#include <wx/image.h>
#include <boost/filesystem.hpp>
#include <boost/algorithm/string/predicate.hpp>
#include <vector>
#include <algorithm>
#include "nanosvg/nanosvg.h"
#include "nanosvg/nanosvgrast.h"
#include "libslic3r/Utils.hpp"
namespace Slic3r {
namespace GUI {
GLTexture::Quad_UVs GLTexture::FullTextureUVs = { { 0.0f, 1.0f }, { 1.0f, 1.0f }, { 1.0f, 0.0f }, { 0.0f, 0.0f } };
GLTexture::GLTexture()
: m_id(0)
, m_width(0)
, m_height(0)
, m_source("")
{
}
GLTexture::~GLTexture()
{
reset();
}
bool GLTexture::load_from_file(const std::string& filename, bool use_mipmaps)
{
reset();
if (!boost::filesystem::exists(filename))
return false;
if (boost::algorithm::iends_with(filename, ".png"))
return load_from_png(filename, use_mipmaps);
else
return false;
}
bool GLTexture::load_from_svg_file(const std::string& filename, bool use_mipmaps, unsigned int max_size_px)
{
reset();
if (!boost::filesystem::exists(filename))
return false;
if (boost::algorithm::iends_with(filename, ".svg"))
return load_from_svg(filename, use_mipmaps, max_size_px);
else
return false;
}
bool GLTexture::load_from_svg_files_as_sprites_array(const std::vector<std::string>& filenames, const std::vector<std::pair<int, bool>>& states, unsigned int sprite_size_px)
{
reset();
if (filenames.empty() || states.empty() || (sprite_size_px == 0))
return false;
m_width = (int)(sprite_size_px * states.size());
m_height = (int)(sprite_size_px * filenames.size());
int n_pixels = m_width * m_height;
int sprite_n_pixels = sprite_size_px * sprite_size_px;
int sprite_bytes = sprite_n_pixels * 4;
int sprite_stride = sprite_size_px * 4;
if (n_pixels <= 0)
{
reset();
return false;
}
std::vector<unsigned char> data(n_pixels * 4, 0);
std::vector<unsigned char> sprite_data(sprite_bytes, 0);
std::vector<unsigned char> sprite_white_only_data(sprite_bytes, 0);
std::vector<unsigned char> sprite_gray_only_data(sprite_bytes, 0);
std::vector<unsigned char> output_data(sprite_bytes, 0);
NSVGrasterizer* rast = nsvgCreateRasterizer();
if (rast == nullptr)
{
reset();
return false;
}
int sprite_id = -1;
for (const std::string& filename : filenames)
{
++sprite_id;
if (!boost::filesystem::exists(filename))
continue;
if (!boost::algorithm::iends_with(filename, ".svg"))
continue;
NSVGimage* image = nsvgParseFromFile(filename.c_str(), "px", 96.0f);
if (image == nullptr)
continue;
float scale = (float)sprite_size_px / std::max(image->width, image->height);
nsvgRasterize(rast, image, 0, 0, scale, sprite_data.data(), sprite_size_px, sprite_size_px, sprite_stride);
// makes white only copy of the sprite
::memcpy((void*)sprite_white_only_data.data(), (const void*)sprite_data.data(), sprite_bytes);
for (int i = 0; i < sprite_n_pixels; ++i)
{
int offset = i * 4;
if (sprite_white_only_data.data()[offset] != 0)
::memset((void*)&sprite_white_only_data.data()[offset], 255, 3);
}
// makes gray only copy of the sprite
::memcpy((void*)sprite_gray_only_data.data(), (const void*)sprite_data.data(), sprite_bytes);
for (int i = 0; i < sprite_n_pixels; ++i)
{
int offset = i * 4;
if (sprite_gray_only_data.data()[offset] != 0)
::memset((void*)&sprite_gray_only_data.data()[offset], 128, 3);
}
int sprite_offset_px = sprite_id * sprite_size_px * m_width;
int state_id = -1;
for (const std::pair<int, bool>& state : states)
{
++state_id;
// select the sprite variant
std::vector<unsigned char>* src = nullptr;
switch (state.first)
{
case 1: { src = &sprite_white_only_data; break; }
case 2: { src = &sprite_gray_only_data; break; }
default: { src = &sprite_data; break; }
}
::memcpy((void*)output_data.data(), (const void*)src->data(), sprite_bytes);
// applies background, if needed
if (state.second)
{
for (int i = 0; i < sprite_n_pixels; ++i)
{
int offset = i * 4;
float alpha = (float)output_data.data()[offset + 3] / 255.0f;
output_data.data()[offset + 0] = (unsigned char)(output_data.data()[offset + 0] * alpha);
output_data.data()[offset + 1] = (unsigned char)(output_data.data()[offset + 1] * alpha);
output_data.data()[offset + 2] = (unsigned char)(output_data.data()[offset + 2] * alpha);
output_data.data()[offset + 3] = (unsigned char)(128 * (1.0f - alpha) + output_data.data()[offset + 3] * alpha);
}
}
int state_offset_px = sprite_offset_px + state_id * sprite_size_px;
for (int j = 0; j < (int)sprite_size_px; ++j)
{
::memcpy((void*)&data.data()[(state_offset_px + j * m_width) * 4], (const void*)&output_data.data()[j * sprite_stride], sprite_stride);
}
}
nsvgDelete(image);
}
nsvgDeleteRasterizer(rast);
// sends data to gpu
glsafe(::glPixelStorei(GL_UNPACK_ALIGNMENT, 1));
glsafe(::glGenTextures(1, &m_id));
glsafe(::glBindTexture(GL_TEXTURE_2D, m_id));
glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)m_width, (GLsizei)m_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0));
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
glsafe(::glBindTexture(GL_TEXTURE_2D, 0));
m_source = filenames.front();
#if 0
// debug output
static int pass = 0;
++pass;
wxImage output(m_width, m_height);
output.InitAlpha();
for (int h = 0; h < m_height; ++h)
{
int px_h = h * m_width;
for (int w = 0; w < m_width; ++w)
{
int offset = (px_h + w) * 4;
output.SetRGB(w, h, data.data()[offset + 0], data.data()[offset + 1], data.data()[offset + 2]);
output.SetAlpha(w, h, data.data()[offset + 3]);
}
}
std::string out_filename = resources_dir() + "/icons/test_" + std::to_string(pass) + ".png";
output.SaveFile(out_filename, wxBITMAP_TYPE_PNG);
#endif // 0
return true;
}
void GLTexture::reset()
{
if (m_id != 0)
glsafe(::glDeleteTextures(1, &m_id));
m_id = 0;
m_width = 0;
m_height = 0;
m_source = "";
}
void GLTexture::render_texture(unsigned int tex_id, float left, float right, float bottom, float top)
{
render_sub_texture(tex_id, left, right, bottom, top, FullTextureUVs);
}
void GLTexture::render_sub_texture(unsigned int tex_id, float left, float right, float bottom, float top, const GLTexture::Quad_UVs& uvs)
{
glsafe(::glEnable(GL_BLEND));
glsafe(::glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA));
glsafe(::glEnable(GL_TEXTURE_2D));
glsafe(::glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE));
glsafe(::glBindTexture(GL_TEXTURE_2D, (GLuint)tex_id));
::glBegin(GL_QUADS);
::glTexCoord2f(uvs.left_bottom.u, uvs.left_bottom.v); ::glVertex2f(left, bottom);
::glTexCoord2f(uvs.right_bottom.u, uvs.right_bottom.v); ::glVertex2f(right, bottom);
::glTexCoord2f(uvs.right_top.u, uvs.right_top.v); ::glVertex2f(right, top);
::glTexCoord2f(uvs.left_top.u, uvs.left_top.v); ::glVertex2f(left, top);
glsafe(::glEnd());
glsafe(::glBindTexture(GL_TEXTURE_2D, 0));
glsafe(::glDisable(GL_TEXTURE_2D));
glsafe(::glDisable(GL_BLEND));
}
unsigned int GLTexture::generate_mipmaps(wxImage& image)
{
int w = image.GetWidth();
int h = image.GetHeight();
GLint level = 0;
std::vector<unsigned char> data(w * h * 4, 0);
while ((w > 1) || (h > 1))
{
++level;
w = std::max(w / 2, 1);
h = std::max(h / 2, 1);
int n_pixels = w * h;
image = image.ResampleBicubic(w, h);
unsigned char* img_rgb = image.GetData();
unsigned char* img_alpha = image.GetAlpha();
data.resize(n_pixels * 4);
for (int i = 0; i < n_pixels; ++i)
{
int data_id = i * 4;
int img_id = i * 3;
data[data_id + 0] = img_rgb[img_id + 0];
data[data_id + 1] = img_rgb[img_id + 1];
data[data_id + 2] = img_rgb[img_id + 2];
data[data_id + 3] = (img_alpha != nullptr) ? img_alpha[i] : 255;
}
glsafe(::glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA, (GLsizei)w, (GLsizei)h, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
}
return (unsigned int)level;
}
bool GLTexture::load_from_png(const std::string& filename, bool use_mipmaps)
{
// Load a PNG with an alpha channel.
wxImage image;
if (!image.LoadFile(wxString::FromUTF8(filename.c_str()), wxBITMAP_TYPE_PNG))
{
reset();
return false;
}
m_width = image.GetWidth();
m_height = image.GetHeight();
int n_pixels = m_width * m_height;
if (n_pixels <= 0)
{
reset();
return false;
}
// Get RGB & alpha raw data from wxImage, pack them into an array.
unsigned char* img_rgb = image.GetData();
if (img_rgb == nullptr)
{
reset();
return false;
}
unsigned char* img_alpha = image.GetAlpha();
std::vector<unsigned char> data(n_pixels * 4, 0);
for (int i = 0; i < n_pixels; ++i)
{
int data_id = i * 4;
int img_id = i * 3;
data[data_id + 0] = img_rgb[img_id + 0];
data[data_id + 1] = img_rgb[img_id + 1];
data[data_id + 2] = img_rgb[img_id + 2];
data[data_id + 3] = (img_alpha != nullptr) ? img_alpha[i] : 255;
}
// sends data to gpu
glsafe(::glPixelStorei(GL_UNPACK_ALIGNMENT, 1));
glsafe(::glGenTextures(1, &m_id));
glsafe(::glBindTexture(GL_TEXTURE_2D, m_id));
glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)m_width, (GLsizei)m_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
if (use_mipmaps)
{
// we manually generate mipmaps because glGenerateMipmap() function is not reliable on all graphics cards
unsigned int levels_count = generate_mipmaps(image);
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, levels_count));
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR));
}
else
{
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0));
}
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
glsafe(::glBindTexture(GL_TEXTURE_2D, 0));
m_source = filename;
return true;
}
bool GLTexture::load_from_svg(const std::string& filename, bool use_mipmaps, unsigned int max_size_px)
{
NSVGimage* image = nsvgParseFromFile(filename.c_str(), "px", 96.0f);
if (image == nullptr)
{
// printf("Could not open SVG image.\n");
reset();
return false;
}
float scale = (float)max_size_px / std::max(image->width, image->height);
m_width = (int)(scale * image->width);
m_height = (int)(scale * image->height);
int n_pixels = m_width * m_height;
if (n_pixels <= 0)
{
reset();
nsvgDelete(image);
return false;
}
NSVGrasterizer* rast = nsvgCreateRasterizer();
if (rast == nullptr)
{
// printf("Could not init rasterizer.\n");
nsvgDelete(image);
reset();
return false;
}
// creates the temporary buffer only once, with max size, and reuse it for all the levels, if generating mipmaps
std::vector<unsigned char> data(n_pixels * 4, 0);
nsvgRasterize(rast, image, 0, 0, scale, data.data(), m_width, m_height, m_width * 4);
// sends data to gpu
glsafe(::glPixelStorei(GL_UNPACK_ALIGNMENT, 1));
glsafe(::glGenTextures(1, &m_id));
glsafe(::glBindTexture(GL_TEXTURE_2D, m_id));
glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)m_width, (GLsizei)m_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
if (use_mipmaps)
{
// we manually generate mipmaps because glGenerateMipmap() function is not reliable on all graphics cards
int lod_w = m_width;
int lod_h = m_height;
GLint level = 0;
while ((lod_w > 1) || (lod_h > 1))
{
++level;
lod_w = std::max(lod_w / 2, 1);
lod_h = std::max(lod_h / 2, 1);
scale /= 2.0f;
nsvgRasterize(rast, image, 0, 0, scale, data.data(), lod_w, lod_h, lod_w * 4);
glsafe(::glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA, (GLsizei)lod_w, (GLsizei)lod_h, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
}
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, level));
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR));
}
else
{
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0));
}
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
glsafe(::glBindTexture(GL_TEXTURE_2D, 0));
m_source = filename;
nsvgDeleteRasterizer(rast);
nsvgDelete(image);
return true;
}
} // namespace GUI
} // namespace Slic3r
Reference in a new issue View git blame Copy permalink