fix pixi run examples for linux

.gitignore

@@ -7,6 +7,8 @@
 /clang-coverage/
 *.gcov
 *.bin
+# pixi lock
+pixi.lock
 # pixi environments
 .pixi/*
 !.pixi/config.toml

examples/example_glfw3.cpp

@@ -120,9 +120,14 @@ int main()
         return -1;
     }
 
+    std::cout << "GLFW Version: " << glfwGetVersionString() << "\n";
+
     glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
     glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
     glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+    // Force GLX context creation API to ensure compatibility with GLEW
+    glfwWindowHint(GLFW_CONTEXT_CREATION_API, GLFW_NATIVE_CONTEXT_API);
+
 #ifdef __APPLE__
     glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
 #endif
@@ -141,15 +146,30 @@ int main()
     glfwMakeContextCurrent(window);
     glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
 
+    // Check if context is valid using standard GL
+    const GLubyte* renderer = glGetString(GL_RENDERER);
+    const GLubyte* version = glGetString(GL_VERSION);
+    if (renderer && version) {
+        std::cout << "Renderer: " << renderer << "\n";
+        std::cout << "OpenGL version supported: " << version << "\n";
+    } else {
+        std::cerr << "Failed to get GL_RENDERER or GL_VERSION. Context might be invalid.\n";
+    }
+
     // ---------- GLEW init ----------
     glewExperimental = GL_TRUE;
     GLenum glewErr = glewInit();
     if (glewErr != GLEW_OK)
     {
-        std::cerr << "Failed to initialize GLEW: " << reinterpret_cast<const char*>(glewGetErrorString(glewErr))
-                  << "\n";
-        glfwTerminate();
-        return -1;
+        // Ignore NO_GLX_DISPLAY if we have a valid context
+        if (glewErr == GLEW_ERROR_NO_GLX_DISPLAY && renderer) {
+             std::cerr << "GLEW warning: " << glewGetErrorString(glewErr) << " (Ignored because context seems valid)\n";
+        } else {
+            std::cerr << "Failed to initialize GLEW: " << reinterpret_cast<const char*>(glewGetErrorString(glewErr))
+                    << "\n";
+            glfwTerminate();
+            return -1;
+        }
     }
 
     // ---------- GL state ----------

pixi.toml

@@ -37,6 +37,15 @@ ninja = ">=1.13.2,<2"
 
 [target.linux-64.dependencies]
 mesa-libgl-devel-cos7-x86_64 = ">=18.3.4,<19"
+xorg-x11-server-xvfb-cos7-x86_64 = ">=1.20.4,<2"
+
+[target.linux-64.activation.env]
+__GLX_VENDOR_LIBRARY_NAME = "mesa"
+EGL_PLATFORM = "x11"
+GLFW_PLATFORM = "x11"
+
+[target.linux-64.tasks]
+examples = { cwd = "pixi", cmd = "xvfb-run -a -s '-screen 0 1024x768x24 +extension GLX +render' cmake -DCMAKE_BUILD_TYPE=Debug -P run.examples.cmake", depends-on = ["build"] }
 
 [target.win-64.dependencies]
 mesa-libgl-devel-cos7-x86_64 = ">=18.3.4,<19"
@@ -49,3 +58,12 @@ mesa-libgl-devel-cos7-aarch64 = ">=18.3.4,<19"
 
 [target.linux-aarch64.dependencies]
 mesa-libgl-devel-cos7-aarch64 = ">=18.3.4,<19"
+xorg-x11-server-xvfb-cos7-aarch64 = ">=1.20.4,<2"
+
+[target.linux-aarch64.activation.env]
+__GLX_VENDOR_LIBRARY_NAME = "mesa"
+EGL_PLATFORM = "x11"
+GLFW_PLATFORM = "x11"
+
+[target.linux-aarch64.tasks]
+examples = { cwd = "pixi", cmd = "xvfb-run -a -s '-screen 0 1024x768x24 +extension GLX +render' cmake -DCMAKE_BUILD_TYPE=Debug -P run.examples.cmake", depends-on = ["build"] }