3DPrinting/PrusaSlicer-NonPlainar
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Render custom bed textures in png format on prusa beds

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This commit is contained in:
Enrico Turri 2019-07-19 09:18:09 +02:00
parent 1c5ff3c72d
commit ba4bc8ac82
4 changed files with 226 additions and 11 deletions
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22
resources/shaders/printbed.fs
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@ -5,16 +5,30 @@ const vec3 back_color_light = vec3(0.365, 0.365, 0.365);
uniform sampler2D texture;
uniform bool transparent_background;
uniform bool svg_source;
varying vec2 tex_coords;
void main()
vec4 svg_color()
{
// takes foreground from texture
vec4 fore_color = texture2D(texture, tex_coords);
// calculates radial gradient
vec3 back_color = vec3(mix(back_color_light, back_color_dark, smoothstep(0.0, 0.5, length(abs(tex_coords.xy) - vec2(0.5)))));
vec4 fore_color = texture2D(texture, tex_coords);
// blends foreground with background
gl_FragColor = vec4(mix(back_color, fore_color.rgb, fore_color.a), transparent_background ? fore_color.a : 1.0);
return vec4(mix(back_color, fore_color.rgb, fore_color.a), transparent_background ? fore_color.a : 1.0);
}
vec4 non_svg_color()
{
// takes foreground from texture
vec4 color = texture2D(texture, tex_coords);
return vec4(color.rgb, transparent_background ? color.a * 0.25 : color.a);
}
void main()
{
gl_FragColor = svg_source ? svg_color() : non_svg_color();
}

33
src/slic3r/GUI/3DBed.cpp
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@ -519,13 +519,18 @@ void Bed3D::render_prusa(GLCanvas3D* canvas, const std::string &key, bool bottom
if ((m_texture.get_id() == 0) || (m_texture.get_source() != filename))
{
m_texture.reset();
if (boost::algorithm::iends_with(filename, ".svg"))
{
// generate a temporary lower resolution texture to show while no main texture levels have been compressed
if (!m_temp_texture.load_from_svg_file(filename, false, false, false, max_tex_size / 8))
if ((m_temp_texture.get_id() == 0) || (m_temp_texture.get_source() != filename))
{
render_custom();
return;
// generate a temporary lower resolution texture to show while no main texture levels have been compressed
if (!m_temp_texture.load_from_svg_file(filename, false, false, false, max_tex_size / 8))
{
render_custom();
return;
}
}
// starts generating the main texture, compression will run asynchronously
@ -537,9 +542,22 @@ void Bed3D::render_prusa(GLCanvas3D* canvas, const std::string &key, bool bottom
}
else if (boost::algorithm::iends_with(filename, ".png"))
{
std::cout << "texture: " << filename << std::endl;
render_custom();
return;
// generate a temporary lower resolution texture to show while no main texture levels have been compressed
if ((m_temp_texture.get_id() == 0) || (m_temp_texture.get_source() != filename))
{
if (!m_temp_texture.load_from_file(filename, false, false, false, max_tex_size))
{
render_custom();
return;
}
}
// starts generating the main texture, compression will run asynchronously
if (!m_texture.load_from_file(filename, true, true, true, max_tex_size))
{
render_custom();
return;
}
}
else
{
@ -634,6 +652,7 @@ void Bed3D::render_prusa_shader(bool transparent) const
{
m_shader.start_using();
m_shader.set_uniform("transparent_background", transparent);
m_shader.set_uniform("svg_source", boost::algorithm::iends_with(m_texture.get_source(), ".svg"));
unsigned int stride = m_triangles.get_vertex_data_size();

180
src/slic3r/GUI/GLTexture.cpp
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@ -147,6 +147,19 @@ bool GLTexture::load_from_file(const std::string& filename, bool use_mipmaps, bo
return false;
}
bool GLTexture::load_from_file(const std::string& filename, bool use_mipmaps, bool compress, bool apply_anisotropy, unsigned int max_size_px)
{
reset();
if (!boost::filesystem::exists(filename))
return false;
if (boost::algorithm::iends_with(filename, ".png"))
return load_from_png(filename, use_mipmaps, compress, apply_anisotropy, max_size_px);
else
return false;
}
bool GLTexture::load_from_svg_file(const std::string& filename, bool use_mipmaps, bool compress, bool apply_anisotropy, unsigned int max_size_px)
{
reset();
@ -465,6 +478,172 @@ bool GLTexture::load_from_png(const std::string& filename, bool use_mipmaps, boo
return true;
}
bool GLTexture::load_from_png(const std::string& filename, bool use_mipmaps, bool compress, bool apply_anisotropy, unsigned int max_size_px)
{
bool compression_enabled = compress && GLEW_EXT_texture_compression_s3tc;
// 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();
unsigned int max_size = (unsigned int)std::max(m_width, m_height);
bool requires_rescale = false;
if (max_size_px < max_size)
{
float scale = (float)max_size_px / (float)max_size;
m_width = (int)(scale * (float)m_width);
m_height = (int)(scale * (float)m_height);
requires_rescale = true;
}
if (compression_enabled)
{
// the stb_dxt compression library seems to like only texture sizes which are a multiple of 4
int width_rem = m_width % 4;
int height_rem = m_height % 4;
if (width_rem != 0)
{
m_width += (4 - width_rem);
requires_rescale = true;
}
if (height_rem != 0)
{
m_height += (4 - height_rem);
requires_rescale = true;
}
}
if (requires_rescale)
image = image.ResampleBicubic(m_width, m_height);
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));
if (apply_anisotropy)
{
GLfloat max_anisotropy = GLCanvas3DManager::get_gl_info().get_max_anisotropy();
if (max_anisotropy > 1.0f)
glsafe(::glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, max_anisotropy));
}
if (compression_enabled)
{
// initializes the texture on GPU
glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, (GLsizei)m_width, (GLsizei)m_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0));
// and send the uncompressed data to the compressor
m_compressor.add_level((unsigned int)m_width, (unsigned int)m_height, data);
}
else
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;
// we do not need to generate all levels down to 1x1
while ((lod_w > 16) || (lod_h > 16))
{
++level;
lod_w = std::max(lod_w / 2, 1);
lod_h = std::max(lod_h / 2, 1);
n_pixels = lod_w * lod_h;
image = image.ResampleBicubic(lod_w, lod_h);
data.resize(n_pixels * 4);
img_rgb = image.GetData();
img_alpha = image.GetAlpha();
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;
}
if (compression_enabled)
{
// initializes the texture on GPU
glsafe(::glTexImage2D(GL_TEXTURE_2D, level, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, (GLsizei)lod_w, (GLsizei)lod_h, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0));
// and send the uncompressed data to the compressor
m_compressor.add_level((unsigned int)lod_w, (unsigned int)lod_h, data);
}
else
glsafe(::glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA, (GLsizei)lod_w, (GLsizei)lod_h, 0, GL_RGBA, GL_UNSIGNED_BYTE, (const void*)data.data()));
}
if (!compression_enabled)
{
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;
if (compression_enabled)
// start asynchronous compression
m_compressor.start_compressing();
return true;
}
bool GLTexture::load_from_svg(const std::string& filename, bool use_mipmaps, bool compress, bool apply_anisotropy, unsigned int max_size_px)
{
bool compression_enabled = compress && GLEW_EXT_texture_compression_s3tc;
@ -579,6 +758,7 @@ bool GLTexture::load_from_svg(const std::string& filename, bool use_mipmaps, boo
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));

2
src/slic3r/GUI/GLTexture.hpp
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@ -76,6 +76,7 @@ namespace GUI {
virtual ~GLTexture();
bool load_from_file(const std::string& filename, bool use_mipmaps, bool compress);
bool load_from_file(const std::string& filename, bool use_mipmaps, bool compress, bool apply_anisotropy, unsigned int max_size_px);
bool load_from_svg_file(const std::string& filename, bool use_mipmaps, bool compress, bool apply_anisotropy, unsigned int max_size_px);
// meanings of states: (std::pair<int, bool>)
// first field (int):
@ -106,6 +107,7 @@ namespace GUI {
private:
bool load_from_png(const std::string& filename, bool use_mipmaps, bool compress);
bool load_from_png(const std::string& filename, bool use_mipmaps, bool compress, bool apply_anisotropy, unsigned int max_size_px);
bool load_from_svg(const std::string& filename, bool use_mipmaps, bool compress, bool apply_anisotropy, unsigned int max_size_px);
friend class Compressor;