Android Emulator Blank Screen 0x501 and 0x502 Problem Bugfix Update (cocos2d#18606)

Author: gamehelphere

cocos/renderer/CCGLProgram.cpp

@@ -235,7 +235,7 @@ GLProgram::~GLProgram()
         GL::deleteProgram(_program);
     }
 
-    
+
     clearHashUniforms();
 }
 
@@ -485,6 +485,9 @@ bool GLProgram::compileShader(GLuint * shader, GLenum type, const GLchar* source
     if (compileTimeHeaders.empty()) {
 #if CC_TARGET_PLATFORM == CC_PLATFORM_WINRT
         headersDef = (type == GL_VERTEX_SHADER ? "precision mediump float;\n precision mediump int;\n" : "precision mediump float;\n precision mediump int;\n");
+// Bugfix to make shader variables types constant to be understood by the current Android Virtual Devices or Emulators. This will also eliminate the 0x501 and 0x502 OpenGL Errors during emulation.
+#elif CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID
+        headersDef = "#version 100\n precision mediump float;\n precision mediump int;\n";
 #elif (CC_TARGET_PLATFORM != CC_PLATFORM_WIN32 && CC_TARGET_PLATFORM != CC_PLATFORM_LINUX && CC_TARGET_PLATFORM != CC_PLATFORM_MAC)
         headersDef = (type == GL_VERTEX_SHADER ? "precision highp float;\n precision highp int;\n" : "precision mediump float;\n precision mediump int;\n");
 #endif
@@ -925,7 +928,7 @@ void GLProgram::setUniformsForBuiltins(const Mat4 &matrixMV)
 
     if (_flags.usesP)
         setUniformLocationWithMatrix4fv(_builtInUniforms[UNIFORM_P_MATRIX], matrixP.m, 1);
-    
+
     if (_flags.usesMultiViewP)
     {
         Mat4 mats[4];
@@ -944,7 +947,7 @@ void GLProgram::setUniformsForBuiltins(const Mat4 &matrixMV)
         Mat4 matrixMVP = matrixP * matrixMV;
         setUniformLocationWithMatrix4fv(_builtInUniforms[UNIFORM_MVP_MATRIX], matrixMVP.m, 1);
     }
-    
+
     if (_flags.usesMultiViewMVP)
     {
         Mat4 mats[4];
@@ -1022,4 +1025,3 @@ inline void GLProgram::clearHashUniforms()
 }
 
 NS_CC_END
-