fix for retina screens

1 files changed, 6 insertions, 5 deletions

diff --git a/common/glfw_view.cpp b/common/glfw_view.cpp
index 2542e6cf93..3ef7bc36a9 100644
--- a/common/glfw_view.cpp
+++ b/common/glfw_view.cpp
@@ -232,10 +232,10 @@ void show_debug_image(std::string name, const char *data, size_t width, size_t h
 }
 
 
-void show_color_debug_image(std::string name, const char *data, size_t width, size_t height) {
+void show_color_debug_image(std::string name, const char *data, size_t logical_width, size_t logical_height, size_t width, size_t height) {
     static GLFWwindow *debug_window = nullptr;
     if (!debug_window) {
-        debug_window = glfwCreateWindow(width, height, name.c_str(), nullptr, nullptr);
+        debug_window = glfwCreateWindow(logical_width, logical_height, name.c_str(), nullptr, nullptr);
         if (!debug_window) {
             glfwTerminate();
             fprintf(stderr, "Failed to initialize window\n");
@@ -245,14 +245,15 @@ void show_color_debug_image(std::string name, const char *data, size_t width, si
 
     GLFWwindow *current_window = glfwGetCurrentContext();
 
-    glfwSetWindowSize(debug_window, width, height);
+    glfwSetWindowSize(debug_window, logical_width, logical_height);
     glfwMakeContextCurrent(debug_window);
 
     int fb_width, fb_height;
     glfwGetFramebufferSize(debug_window, &fb_width, &fb_height);
-    float scale = (float)fb_width / (float)width;
+    float x_scale = (float)fb_width / (float)width;
+    float y_scale = (float)fb_height / (float)height;
 
-    glPixelZoom(scale, -scale);
+    glPixelZoom(x_scale, -y_scale);
     glRasterPos2f(-1.0f, 1.0f);
     glDrawPixels(width, height, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, data);
     glfwSwapBuffers(debug_window);