使用 Android 设置 SFML 时出错

Question

我正在尝试将 SFML 编译到 android，并且正在关注 this tutorial。我正在 Ubuntu 64 位上安装。我能够运行 cmake 命令。但是当我运行 make 之后，它正在构建 headers（或其他东西）时，我得到这个错误：

In file included from /home/engineer/Desktop/SFML/src/SFML/Graphics/GLCheck.hpp:32:0,
                 from /home/engineer/Desktop/SFML/src/SFML/Graphics/Texture.cpp:30:
/home/engineer/Desktop/SFML/src/SFML/Graphics/Texture.cpp: In member function 'bool sf::Texture::create(unsigned int, unsigned int)':
/home/engineer/Desktop/SFML/src/SFML/Graphics/GLExtensions.hpp:114:55: error: 'GL_EXT_sRGB' was not declared in this scope
     #define GLEXT_texture_sRGB                        GL_EXT_sRGB
                                                       ^
/home/engineer/Desktop/SFML/src/SFML/Graphics/Texture.cpp:190:31: note: in expansion of macro 'GLEXT_texture_sRGB'
     static bool textureSrgb = GLEXT_texture_sRGB;
                               ^
In file included from /home/engineer/Desktop/SFML/src/SFML/Graphics/Texture.cpp:30:0:
/home/engineer/Desktop/SFML/src/SFML/Graphics/GLExtensions.hpp:115:55: error: 'GL_SRGB8_ALPHA8_EXT' was not declared in this scope
     #define GLEXT_GL_SRGB8_ALPHA8                     GL_SRGB8_ALPHA8_EXT
                                                       ^
/home/engineer/Desktop/SFML/src/SFML/Graphics/GLCheck.hpp:51:28: note: in definition of macro 'glCheck'
     #define glCheck(expr) (expr)
                            ^
/home/engineer/Desktop/SFML/src/SFML/Graphics/Texture.cpp:213:54: note: in expansion of macro 'GLEXT_GL_SRGB8_ALPHA8'
     glCheck(glTexImage2D(GL_TEXTURE_2D, 0, (m_sRgb ? GLEXT_GL_SRGB8_ALPHA8 : GL_RGBA), m_actualSize.x, m_actualSize.y, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL));
                                                      ^
src/SFML/Graphics/CMakeFiles/sfml-graphics.dir/build.make:353: recipe for target 'src/SFML/Graphics/CMakeFiles/sfml-graphics.dir/Texture.cpp.o' failed
make[2]: ** [src/SFML/Graphics/CMakeFiles/sfml-graphics.dir/Texture.cpp.o] Error 1
CMakeFiles/Makefile2:343: recipe for target 'src/SFML/Graphics/CMakeFiles/sfml-graphics.dir/all' failed
make[1]: ** [src/SFML/Graphics/CMakeFiles/sfml-graphics.dir/all] Error 2
Makefile:116: recipe for target 'all' failed
make: *** [all] Error 2

所以基本上它有一个 cpp 文件中包含的宏的问题。 make 到 64% 才遇到错误。

Answer 1

This issue 目前正在 SFML 的错误跟踪器上进行讨论。

您可以同时尝试this patch：

From c89d1a987bc8358ea87c56c5aac5f25e4fec8e2d Mon Sep 17 00:00:00 2001
From: Gordon McShane <gordonmcshane@gmail.com>
Date: Mon, 4 Apr 2016 11:56:16 -0700
Subject: [PATCH] Fix OpenGL ES compilation issues for Android

-Disable OpenGL ES 3.0 extensions on Android
---
 src/SFML/Graphics/GLExtensions.hpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/SFML/Graphics/GLExtensions.hpp b/src/SFML/Graphics/GLExtensions.hpp
index b63ea99..3acb6c3 100644
--- a/src/SFML/Graphics/GLExtensions.hpp
+++ b/src/SFML/Graphics/GLExtensions.hpp
@@ -110,9 +110,14 @@
     #define GLEXT_GL_FRAMEBUFFER_BINDING              GL_FRAMEBUFFER_BINDING_OES
     #define GLEXT_GL_INVALID_FRAMEBUFFER_OPERATION    GL_INVALID_FRAMEBUFFER_OPERATION_OES

-    // Core since 3.0 - EXT_sRGB
+#ifdef SFML_SYSTEM_ANDROID
+    #define GLEXT_texture_sRGB                        false
+    #define GLEXT_GL_SRGB8_ALPHA8                     false
+#else
+     // Core since 3.0 - EXT_sRGB
     #define GLEXT_texture_sRGB                        GL_EXT_sRGB
     #define GLEXT_GL_SRGB8_ALPHA8                     GL_SRGB8_ALPHA8_EXT
+#endif

 #else

使用 Android 设置 SFML 时出错

Error setting up SFML with Android

c++

android

sfml