OrcaSlicer/src/slic3r/GUI/GLShadersManager.cpp
Lukáš Hejl bad51cdb52 OSX specific: Fixed darker colors of objects inside multi-material gizmo on macOS running on Arm64 CPU.
For Apple's on Arm CPU computed triangle normals inside fragment shader using dFdx and dFdy has the opposite direction. Because of this, objects had darker colors inside the multi-material gizmo.
Based on https://stackoverflow.com/a/66206648, the similar behavior was also spotted on some other devices with Arm CPU.
2021-08-02 14:59:03 +02:00

91 lines
3.4 KiB
C++

#include "libslic3r/libslic3r.h"
#include "libslic3r/Platform.hpp"
#include "GLShadersManager.hpp"
#include "3DScene.hpp"
#include "GUI_App.hpp"
#include <cassert>
#include <algorithm>
#include <string_view>
using namespace std::literals;
#include <GL/glew.h>
namespace Slic3r {
std::pair<bool, std::string> GLShadersManager::init()
{
std::string error;
auto append_shader = [this, &error](const std::string& name, const GLShaderProgram::ShaderFilenames& filenames,
const std::initializer_list<std::string_view> &defines = {}) {
m_shaders.push_back(std::make_unique<GLShaderProgram>());
if (!m_shaders.back()->init_from_files(name, filenames, defines)) {
error += name + "\n";
// if any error happens while initializating the shader, we remove it from the list
m_shaders.pop_back();
return false;
}
return true;
};
assert(m_shaders.empty());
bool valid = true;
// used to render bed axes and model, selection hints, gcode sequential view marker model, preview shells
valid &= append_shader("gouraud_light", { "gouraud_light.vs", "gouraud_light.fs" });
// used to render printbed
valid &= append_shader("printbed", { "printbed.vs", "printbed.fs" });
// used to render options in gcode preview
valid &= append_shader("options_110", { "options_110.vs", "options_110.fs" });
if (GUI::wxGetApp().is_glsl_version_greater_or_equal_to(1, 20))
valid &= append_shader("options_120", { "options_120.vs", "options_120.fs" });
// used to render extrusion and travel paths as lines in gcode preview
valid &= append_shader("toolpaths_lines", { "toolpaths_lines.vs", "toolpaths_lines.fs" });
// used to render objects in 3d editor
// For Apple's on Arm CPU computed triangle normals inside fragment shader using dFdx and dFdy has the opposite direction.
// Because of this, objects had darker colors inside the multi-material gizmo.
// Based on https://stackoverflow.com/a/66206648, the similar behavior was also spotted on some other devices with Arm CPU.
if (platform_flavor() == PlatformFlavor::OSXOnArm)
valid &= append_shader("gouraud", { "gouraud.vs", "gouraud.fs" }, { "FLIP_TRIANGLE_NORMALS"sv
#if ENABLE_ENVIRONMENT_MAP
, "ENABLE_ENVIRONMENT_MAP"sv
#endif
});
else
valid &= append_shader("gouraud", { "gouraud.vs", "gouraud.fs" }
#if ENABLE_ENVIRONMENT_MAP
, { "ENABLE_ENVIRONMENT_MAP"sv }
#endif
);
// used to render variable layers heights in 3d editor
valid &= append_shader("variable_layer_height", { "variable_layer_height.vs", "variable_layer_height.fs" });
return { valid, error };
}
void GLShadersManager::shutdown()
{
m_shaders.clear();
}
GLShaderProgram* GLShadersManager::get_shader(const std::string& shader_name)
{
auto it = std::find_if(m_shaders.begin(), m_shaders.end(), [&shader_name](std::unique_ptr<GLShaderProgram>& p) { return p->get_name() == shader_name; });
return (it != m_shaders.end()) ? it->get() : nullptr;
}
GLShaderProgram* GLShadersManager::get_current_shader()
{
GLint id = 0;
glsafe(::glGetIntegerv(GL_CURRENT_PROGRAM, &id));
if (id == 0)
return nullptr;
auto it = std::find_if(m_shaders.begin(), m_shaders.end(), [id](std::unique_ptr<GLShaderProgram>& p) { return static_cast<GLint>(p->get_id()) == id; });
return (it != m_shaders.end()) ? it->get() : nullptr;
}
} // namespace Slic3r