Remove window opacity test

It has been superceded by the window property test.

tests/CMakeLists.txt

@@ -34,7 +34,6 @@ add_executable(gamma WIN32 MACOSX_BUNDLE gamma.c ${GLAD_GL})
 add_executable(icon WIN32 MACOSX_BUNDLE icon.c ${GLAD_GL})
 add_executable(inputlag WIN32 MACOSX_BUNDLE inputlag.c ${GETOPT} ${GLAD_GL})
 add_executable(joysticks WIN32 MACOSX_BUNDLE joysticks.c ${GLAD_GL})
-add_executable(opacity WIN32 MACOSX_BUNDLE opacity.c ${GLAD_GL})
 add_executable(tearing WIN32 MACOSX_BUNDLE tearing.c ${GLAD_GL})
 add_executable(threads WIN32 MACOSX_BUNDLE threads.c ${TINYCTHREAD} ${GLAD_GL})
 add_executable(timeout WIN32 MACOSX_BUNDLE timeout.c ${GLAD_GL})
@@ -50,8 +49,8 @@ if (RT_LIBRARY)
     target_link_libraries(threads "${RT_LIBRARY}")
 endif()
 
-set(GUI_ONLY_BINARIES empty gamma icon inputlag joysticks opacity tearing
+set(GUI_ONLY_BINARIES empty gamma icon inputlag joysticks tearing threads
-    threads timeout title triangle-vulkan window windows)
+    timeout title triangle-vulkan window windows)
 set(CONSOLE_BINARIES clipboard events msaa glfwinfo iconify monitors reopen
                      cursor)
 
@@ -70,7 +69,6 @@ if (APPLE)
     set_target_properties(gamma PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Gamma")
     set_target_properties(inputlag PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Input Lag")
     set_target_properties(joysticks PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Joysticks")
-    set_target_properties(opacity PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Opacity")
     set_target_properties(tearing PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Tearing")
     set_target_properties(threads PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Threads")
     set_target_properties(timeout PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Timeout")

tests/opacity.c

@@ -1,109 +0,0 @@
-//========================================================================
-// Window opacity test program
-// Copyright (c) Camilla Löwy <elmindreda@glfw.org>
-//
-// This software is provided 'as-is', without any express or implied
-// warranty. In no event will the authors be held liable for any damages
-// arising from the use of this software.
-//
-// Permission is granted to anyone to use this software for any purpose,
-// including commercial applications, and to alter it and redistribute it
-// freely, subject to the following restrictions:
-//
-// 1. The origin of this software must not be misrepresented; you must not
-//    claim that you wrote the original software. If you use this software
-//    in a product, an acknowledgment in the product documentation would
-//    be appreciated but is not required.
-//
-// 2. Altered source versions must be plainly marked as such, and must not
-//    be misrepresented as being the original software.
-//
-// 3. This notice may not be removed or altered from any source
-//    distribution.
-//
-//========================================================================
-
-#include <glad/gl.h>
-#define GLFW_INCLUDE_NONE
-#include <GLFW/glfw3.h>
-
-#define NK_IMPLEMENTATION
-#define NK_INCLUDE_FIXED_TYPES
-#define NK_INCLUDE_FONT_BAKING
-#define NK_INCLUDE_DEFAULT_FONT
-#define NK_INCLUDE_DEFAULT_ALLOCATOR
-#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
-#define NK_INCLUDE_STANDARD_VARARGS
-#include <nuklear.h>
-
-#define NK_GLFW_GL2_IMPLEMENTATION
-#include <nuklear_glfw_gl2.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-
-static void error_callback(int error, const char* description)
-{
-    fprintf(stderr, "Error: %s\n", description);
-}
-
-int main(int argc, char** argv)
-{
-    GLFWwindow* window;
-    struct nk_context* nk;
-    struct nk_font_atlas* atlas;
-
-    glfwSetErrorCallback(error_callback);
-
-    if (!glfwInit())
-        exit(EXIT_FAILURE);
-
-    glfwWindowHint(GLFW_SCALE_TO_MONITOR, GLFW_TRUE);
-    glfwWindowHint(GLFW_WIN32_KEYBOARD_MENU, GLFW_TRUE);
-
-    window = glfwCreateWindow(400, 400, "Opacity", NULL, NULL);
-    if (!window)
-    {
-        glfwTerminate();
-        exit(EXIT_FAILURE);
-    }
-
-    glfwMakeContextCurrent(window);
-    gladLoadGL(glfwGetProcAddress);
-    glfwSwapInterval(1);
-
-    nk = nk_glfw3_init(window, NK_GLFW3_INSTALL_CALLBACKS);
-    nk_glfw3_font_stash_begin(&atlas);
-    nk_glfw3_font_stash_end();
-
-    while (!glfwWindowShouldClose(window))
-    {
-        int width, height;
-        struct nk_rect area;
-
-        glfwGetWindowSize(window, &width, &height);
-        area = nk_rect(0.f, 0.f, (float) width, (float) height);
-
-        glClear(GL_COLOR_BUFFER_BIT);
-        nk_glfw3_new_frame();
-        if (nk_begin(nk, "", area, 0))
-        {
-            float opacity = glfwGetWindowOpacity(window);
-            nk_layout_row_dynamic(nk, 30, 2);
-            if (nk_slider_float(nk, 0.f, &opacity, 1.f, 0.001f))
-                glfwSetWindowOpacity(window, opacity);
-            nk_labelf(nk, NK_TEXT_LEFT, "%0.3f", opacity);
-        }
-
-        nk_end(nk);
-        nk_glfw3_render(NK_ANTI_ALIASING_ON);
-
-        glfwSwapBuffers(window);
-        glfwWaitEventsTimeout(1.0);
-    }
-
-    nk_glfw3_shutdown();
-    glfwTerminate();
-    exit(EXIT_SUCCESS);
-}
-