Add patch for OpenGL ES

patches/version_2.8.1/0001-Patch-OpenGL-ES.patch

@@ -0,0 +1,99 @@
+From 1ceec265dd3bddea8382c4a6c7d7309ce28ca663 Mon Sep 17 00:00:00 2001
+From: nobody <nobody>
+Date: Mon, 23 Sep 2024 03:52:16 +0000
+Subject: [PATCH] Patch PrusaSlicer for OpenGL ES
+
+---
+ src/libvgcode/glad/include/glad/gles2.h  |  4 ++++
+ src/libvgcode/src/ViewerImpl.cpp         | 10 +++++-----
+ src/libvgcode/src/ViewerImpl.hpp         |  2 +-
+ src/slic3r/GUI/Gizmos/GLGizmoMeasure.cpp |  4 +++-
+ 4 files changed, 13 insertions(+), 7 deletions(-)
+
+diff --git a/src/libvgcode/glad/include/glad/gles2.h b/src/libvgcode/glad/include/glad/gles2.h
+index 2983e1d..5691317 100644
+--- a/src/libvgcode/glad/include/glad/gles2.h
++++ b/src/libvgcode/glad/include/glad/gles2.h
+@@ -87,6 +87,10 @@ extern "C" {
+   #endif
+ #endif
+
++#ifndef GLAD_GLES2_USE_SYSTEM_EGL
++  #define GLAD_GLES2_USE_SYSTEM_EGL 1
++#endif
++
+ #ifndef GLAD_PLATFORM_UWP
+   #if defined(_MSC_VER) && !defined(GLAD_INTERNAL_HAVE_WINAPIFAMILY)
+     #ifdef __has_include
+diff --git a/src/libvgcode/src/ViewerImpl.cpp b/src/libvgcode/src/ViewerImpl.cpp
+index e2a0093..65e6a28 100644
+--- a/src/libvgcode/src/ViewerImpl.cpp
++++ b/src/libvgcode/src/ViewerImpl.cpp
+@@ -903,7 +903,7 @@ void ViewerImpl::reset()
+ using Vec4 = std::array<float, 4>;
+
+ static void extract_pos_and_or_hwa(const std::vector<PathVertex>& vertices, float travels_radius, float wipes_radius, BitSet<>& valid_lines_bitset,
+-    std::vector<Vec4>* positions = nullptr, std::vector<Vec4>* heights_widths_angles = nullptr, bool update_bitset = false) {
++    std::vector<Vec3>* positions = nullptr, std::vector<Vec3>* heights_widths_angles = nullptr, bool update_bitset = false) {
+   static constexpr const Vec3 ZERO = { 0.0f, 0.0f, 0.0f };
+     if (positions == nullptr && heights_widths_angles == nullptr)
+         return;
+@@ -938,7 +938,7 @@ static void extract_pos_and_or_hwa(const std::vector<PathVertex>& vertices, floa
+
+         if (positions != nullptr) {
+             // the last component is a dummy float to comply with GL_RGBA32F format
+-            Vec4 position = { v.position[0], v.position[1], v.position[2], 0.0f };
++            Vec3 position = { v.position[0], v.position[1], v.position[2] };
+             if (move_type == EMoveType::Extrude)
+                 // push down extrusion vertices by half height to render them at the right z
+                 position[2] -= 0.5f * v.height;
+@@ -962,7 +962,7 @@ static void extract_pos_and_or_hwa(const std::vector<PathVertex>& vertices, floa
+             }
+             // the last component is a dummy float to comply with GL_RGBA32F format
+             heights_widths_angles->push_back({ height, width,
+-                std::atan2(prev_line[0] * this_line[1] - prev_line[1] * this_line[0], dot(prev_line, this_line)), 0.0f });
++                std::atan2(prev_line[0] * this_line[1] - prev_line[1] * this_line[0], dot(prev_line, this_line)) });
+         }
+     }
+ }
+@@ -1042,8 +1042,8 @@ void ViewerImpl::load(GCodeInputData&& gcode_data)
+
+     // buffers to send to gpu
+     // the last component is a dummy float to comply with GL_RGBA32F format
+-    std::vector<Vec4> positions;
+-    std::vector<Vec4> heights_widths_angles;
++    std::vector<Vec3> positions;
++    std::vector<Vec3> heights_widths_angles;
+     positions.reserve(m_vertices.size());
+     heights_widths_angles.reserve(m_vertices.size());
+     extract_pos_and_or_hwa(m_vertices, m_travels_radius, m_wipes_radius, m_valid_lines_bitset, &positions, &heights_widths_angles, true);
+diff --git a/src/libvgcode/src/ViewerImpl.hpp b/src/libvgcode/src/ViewerImpl.hpp
+index 8e112dc..ded7101 100644
+--- a/src/libvgcode/src/ViewerImpl.hpp
++++ b/src/libvgcode/src/ViewerImpl.hpp
+@@ -463,4 +463,4 @@ private:
+
+ } // namespace libvgcode
+
+-#endif // VGCODE_VIEWERIMPL_HPP
+\ No newline at end of file
++#endif // VGCODE_VIEWERIMPL_HPP
+diff --git a/src/slic3r/GUI/Gizmos/GLGizmoMeasure.cpp b/src/slic3r/GUI/Gizmos/GLGizmoMeasure.cpp
+index 48b952a..d91807c 100644
+--- a/src/slic3r/GUI/Gizmos/GLGizmoMeasure.cpp
++++ b/src/slic3r/GUI/Gizmos/GLGizmoMeasure.cpp
+@@ -1565,8 +1565,10 @@ void GLGizmoMeasure::render_dimensioning()
+         const Vec3d label_position_world = Geometry::translation_transform(center) * (draw_radius * (Eigen::Quaternion<double>(Eigen::AngleAxisd(step * 0.5 * double(resolution), normal)) * e1_unit));
+
+         // label screen coordinates
++#if !SLIC3R_OPENGL_ES
+         const std::array<int, 4>& viewport = camera.get_viewport();
+-        const Vec2d label_position_ss = TransformHelper::world_to_ss(label_position_world,
++#endif
++	const Vec2d label_position_ss = TransformHelper::world_to_ss(label_position_world,
+             camera.get_projection_matrix().matrix() * camera.get_view_matrix().matrix(), viewport);
+
+         ImGuiPureWrap::set_next_window_pos(label_position_ss.x(), viewport[3] - label_position_ss.y(), ImGuiCond_Always, 0.0f, 1.0f);
+-- 
+2.39.5
+