The NDK solutions are now built without compilation errors. It is uncertain if the files $HOME/IndieLibX/Libraries/Framework3/src/RendererGLES.cpp and $HOME/IndieLibX/Libraries/Framework3/src/RendererGLES2.cpp work properly. The NDK solutions are now built with SDL2 and main dynamic libraries. With testgles2.sh the test project started succesfully in the emulator testgles2.sh The android_fopen function seems to work properly in the NDK project $HOME/IndieLibX/Samples/NDKfiles. I added similar android_fopen functionality to the SDL2 project ($HOME/IndieLibX/Libraries/SDL2-2.0.4) and the android_fopen function seems to work properly with SimpleTexture sample. Also the GLES2 shaders seem to be created properly with the SimpleTexture sample. The SimpleTexture sample application exits with message: The application may be doing too much work on its main thread. This means probably that the SimpleTexture sample application needs an separate worker thread for the resources initialization.
03-14 05:01:56.468 369 545 I ActivityManager: Start proc com.Test.SimpleTexture for activity com.Test.SimpleTexture/.SimpleTextureActivity: pid=1152 uid=10054 gids={50054, 1028, 1015}
03-14 05:01:56.678 1152 1152 I dalvikvm: CheckJNI enabled: not enabling JNI app bug workarounds.
03-14 05:01:56.958 629 629 V PhoneStatusBar: setLightsOn(true)
03-14 05:01:57.478 1152 1152 D dalvikvm: Trying to load lib /data/app-lib/com.Test.SimpleTexture-2/libSDL2.so 0xb2d6ffc0
03-14 05:01:57.518 1152 1152 D dalvikvm: Added shared lib /data/app-lib/com.Test.SimpleTexture-2/libSDL2.so 0xb2d6ffc0
03-14 05:01:57.528 1152 1152 D dalvikvm: Trying to load lib /data/app-lib/com.Test.SimpleTexture-2/libmain.so 0xb2d6ffc0
03-14 05:01:57.578 1152 1152 D dalvikvm: Added shared lib /data/app-lib/com.Test.SimpleTexture-2/libmain.so 0xb2d6ffc0
03-14 05:01:57.578 1152 1152 D dalvikvm: No JNI_OnLoad found in /data/app-lib/com.Test.SimpleTexture-2/libmain.so 0xb2d6ffc0, skipping init
03-14 05:01:58.078 1152 1152 D : HostConnection::get() New Host Connection established 0xb7108dd0, tid 1152
03-14 05:01:58.308 1152 1152 W EGL_emulation: eglSurfaceAttrib not implemented
03-14 05:01:58.348 1152 1152 D OpenGLRenderer: Enabling debug mode 0
03-14 05:01:58.618 1152 1152 I Choreographer: Skipped 42 frames! The application may be doing too much work on its main thread.
03-14 05:01:58.858 369 380 I ActivityManager: Process com.Test.SimpleTexture (pid 1152) has died.
03-14 05:01:58.878 369 380 W ActivityManager: Force removing ActivityRecord{b2f503c8 u0 com.Test.SimpleTexture/.SimpleTextureActivity t4}: app died, no saved state
03-14 05:01:58.928 369 397 W InputDispatcher: channel 'b2f6a7c0 com.Test.SimpleTexture/com.Test.SimpleTexture.SimpleTextureActivity (server)' ~ Consumer closed input channel or an error occurred. events=0x9
03-14 05:01:58.928 369 397 E InputDispatcher: channel 'b2f6a7c0 com.Test.SimpleTexture/com.Test.SimpleTexture.SimpleTextureActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
03-14 05:01:58.938 55 55 D Zygote : Process 1152 exited cleanly (255)
03-14 05:01:58.958 369 381 W InputDispatcher: Attempted to unregister already unregistered input channel 'b2f6a7c0 com.Test.SimpleTexture/com.Test.SimpleTexture.SimpleTextureActivity (server)'
03-14 05:01:58.958 369 381 I WindowState: WIN DEATH: Window{b2f6a7c0 u0 com.Test.SimpleTexture/com.Test.SimpleTexture.SimpleTextureActivity}
03-14 05:01:58.958 369 381 W WindowManager: Force-removing child win Window{b2f6a9e0 u0 SurfaceView} from container Window{b2f6a7c0 u0 com.Test.SimpleTexture/com.Test.SimpleTexture.SimpleTextureActivity}
03-17 17:34:49.180 2020 2036 I libIndieLibX: /home/tronty/IndieLibX/DesktopProjects/NDK/../../Libraries/SDL2-2.0.4/build/com.Test.SimpleTexture/jni/Framework3/../Libraries/Framework3/src/RendererGLES2.cpp:addGLSLShader:1215 03-17 17:34:54.180 2020 2036 I libIndieLibX: 03-17 17:34:54.180 2020 2036 I libIndieLibX: 03-17 17:34:59.180 2020 2036 I libIndieLibX: /home/tronty/IndieLibX/DesktopProjects/NDK/../../Libraries/SDL2-2.0.4/build/com.Test.SimpleTexture/jni/Framework3/../Libraries/Framework3/src/RendererGLES2.cpp:addGLSLShader:1217 03-17 17:35:04.190 2020 2036 I libIndieLibX: /home/tronty/IndieLibX/DesktopProjects/NDK/../../Libraries/SDL2-2.0.4/build/com.Test.SimpleTexture/jni/Framework3/../Libraries/Framework3/src/RendererGLES2.cpp:addHLSLShaderVrtl:1263 03-17 17:35:09.190 2020 2036 I libIndieLibX: /home/tronty/IndieLibX/DesktopProjects/NDK/../../Libraries/SDL2-2.0.4/build/com.Test.SimpleTexture/jni/Framework3/../Libraries/Framework3/src/RendererHLSLCg.cpp:addHLSLShaderVrtl:1149 03-17 17:35:14.310 367 379 I ActivityManager: Process com.Test.SimpleTexture (pid 2020) has died. 03-17 17:35:14.330 56 56 D Zygote : Process 2020 exited cleanly (255)
I removed the sleep function calls from the C/C++ code and added instead android:persistent="true" to the AndroidManifest.xml file. Messages related to the ActivityManager disappeared from the adb log. Now there are only following messages in the adb log: 03-27 16:02:47.055 1416 1416 E libEGL : call to OpenGL ES API with no current context (logged once per thread) Finally probably because of this, shader linking fails and the program exits. So the problem of setting the current context should be solved next. May be by utilizing the testgles2.c file from the SDL2 sources package is the solution. Other option is to use android_egl_context_restore() function in the SDL2 sources package. Third point is to make sure that all the android threads work properly.
Because it is hard to tell from where the troubles with threads actually come from, i decided to exclude the SDL2 project from the NDK solutions. The android_fopen function is now included in the STX project in the android.c file. Also the code passing the android AssetManager from Java to C/C++ is included in the STX project in the android.c file. Something is wrong with the shaders in the file RendererGLES2.cpp in the project Framework3 around line 556. The function glGetActiveAttrib (lines 561 and 571) fails as there is something wrong with the functions glGetProgramiv(prog, GL_ACTIVE_ATTRIBUTES, &active_attribs) (line 540) and glGetProgramiv(prog, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, &max_length) (line 544). After making some corrections around lines 548-550 I succeeded to get log file NDK2.log. In the log there may be more clues also about other errors. In the emulator the background is colored to gray so in the function render in the file SimpleTexture.cpp in the sample SimpleTexture the following functions seem to work properly: IRenderer::GetRendererInstance()->Clear IRenderer::GetRendererInstance()->BeginScene IRenderer::GetRendererInstance()->EndScene IRenderer::GetRendererInstance()->Present The function addVertexBufferVrtl seem to get odd looking data (data=-1438369208): 03-29 03:24:50.463 1222 1235 I libIndieLibX: /home/tronty/IndieLibX/DesktopProjects/NDK_gl_code2/../../Libraries/MVC/NDK/jni/Framework3/../Libraries/Framework3/src/RendererGLES.cpp:addVertexBufferVrtl:913 03-29 03:24:50.463 1222 1235 I libIndieLibX: size=64 03-29 03:24:50.463 1222 1235 I libIndieLibX: data=-1438369208 03-29 03:24:50.463 1222 1235 I libIndieLibX: aold=0 This probabaly means that function call to DrawPrimitiveUP fails in NDK. This is somewhat strange since DrawPrimitiveUP works in LNX32/64, OSX64 and in Win32/64. The log file NDK2.log contains now two clues: 03-30 07:00:59.395 1152 1165 I libIndieLibX: /home/tronty/IndieLibX/DesktopProjects/NDK_gl_code2/../../Libraries/MVC/NDK/jni/Framework3/../Libraries/Framework3/src/RendererGLES2.cpp:addGLSLShader:1147 03-30 07:00:59.395 1152 1165 I libIndieLibX: Set: uniform name=worldViewProj 03-30 07:00:59.405 1152 1165 I libIndieLibX: Set: uniform index=(null) 03-30 07:00:59.695 1152 1165 I libIndieLibX: /home/tronty/IndieLibX/DesktopProjects/NDK_gl_code2/../../Libraries/MVC/NDK/jni/Framework3/../Libraries/Framework3/src/RendererGLES2.cpp:changeVertexBufferVrtl:161 03-30 07:00:59.705 1152 1165 I libIndieLibX: glVertexAttribPointer: 03-30 07:00:59.705 1152 1165 I libIndieLibX: index=1 03-30 07:00:59.705 1152 1165 I libIndieLibX: size=0,2 03-30 07:00:59.705 1152 1165 I libIndieLibX: type=5126 03-30 07:00:59.705 1152 1165 I libIndieLibX: stride=16 03-30 07:00:59.705 1152 1165 I libIndieLibX: pointer=-1440808956 So there are probably something wrong with matrix worldViewProj and VertexArray. The log file NDK2.log contains now only one clue: 03-31 08:57:27.053 1063 1076 I libIndieLibX: /home/tronty/IndieLibX/DesktopProjects/NDK_gl_code2/../../Libraries/MVC/NDK/jni/Framework3/../Libraries/Framework3/src/RendererGLES2.cpp:changeVertexBufferVrtl:161 03-31 08:57:27.063 1063 1076 I libIndieLibX: glVertexAttribPointer: 03-31 08:57:27.063 1063 1076 I libIndieLibX: index=1 03-31 08:57:27.073 1063 1076 I libIndieLibX: size=0,2 03-31 08:57:27.073 1063 1076 I libIndieLibX: type=5126 03-31 08:57:27.083 1063 1076 I libIndieLibX: stride=16 03-31 08:57:27.083 1063 1076 I libIndieLibX: pointer=-1440870396 So there are probably something wrong with the VertexArray.
In the emulator console (make emulator) there are shown two gl errors: ../../sdk/emulator/opengl//host/libs/Translator/GLES_V2//GLESv2Imp.cpp:glTexImage2D:1812 error 0x501 ../../sdk/emulator/opengl//host/libs/Translator/GLES_V2//GLESv2Imp.cpp:glUniformMatrix4fv:1980 error 0x501 they are probably generated by calls to the addTexture and applyConstants. Also the checkGlError macro detects these errors: Libraries/MVC/NDK/jni/Framework3/../Libraries/Framework3/src/RendererGLES.cpp:addTexture:1515 04-03 06:37:27.048 1090 1103 I libIndieLibX: glTexImage2D: 04-03 06:37:27.088 1090 1103 I libIndieLibX: GL error: 04-03 06:37:27.088 1090 1103 I libIndieLibX: file=/home/tronty/IndieLibX/DesktopProjects/NDK_gl_code2/../../Libraries/MVC/NDK/jni/Framework3/../Libraries/Framework3/src/RendererGLES.cpp: 04-03 06:37:27.088 1090 1103 I libIndieLibX: fn=addTexture: 04-03 06:37:27.088 1090 1103 I libIndieLibX: line=1518: 04-03 06:37:27.088 1090 1103 I libIndieLibX: 0x00000501 04-03 06:37:27.088 1090 1103 I libIndieLibX: /home/tronty/IndieLibX/DesktopProjects/NDK_gl_code2/../../Libraries/MVC/NDK/jni/Framework3/../Libraries/Framework3/src/RendererGLES.cpp:addTexture:1519 04-03 06:37:27.218 1090 1103 I libIndieLibX: /home/tronty/IndieLibX/DesktopProjects/NDK_gl_code2/../../Libraries/MVC/NDK/jni/Framework3/../Libraries/Framework3/src/RendererGLES2.cpp:applyConstants:212 04-03 06:37:27.218 1090 1103 I libIndieLibX: uni->name:worldViewProj 04-03 06:37:27.218 1090 1103 I libIndieLibX: uni->type:14 04-03 06:37:27.218 1090 1103 I libIndieLibX: uni->index:0 04-03 06:37:27.218 1090 1103 I libIndieLibX: uni->nElements:1 04-03 06:37:27.218 1090 1103 I libIndieLibX: uni->data:-1208369336 04-03 06:37:27.218 1090 1103 I libIndieLibX: GL error: 04-03 06:37:27.218 1090 1103 I libIndieLibX: file=/home/tronty/IndieLibX/DesktopProjects/NDK_gl_code2/../../Libraries/MVC/NDK/jni/Framework3/../Libraries/Framework3/src/RendererGLES2.cpp: 04-03 06:37:27.218 1090 1103 I libIndieLibX: fn=applyConstants: 04-03 06:37:27.218 1090 1103 I libIndieLibX: line=219: 04-03 06:37:27.218 1090 1103 I libIndieLibX: 0x00000501 04-03 06:37:27.218 1090 1103 I libIndieLibX: /home/tronty/IndieLibX/DesktopProjects/NDK_gl_code2/../../Libraries/MVC/NDK/jni/Framework3/../Libraries/Framework3/src/RendererGLES2.cpp:applyConstants:220 In the addVertexBufferVrtl and in the changeVertexBufferVrtl there are shown in many places in the log (NDK2.log) odd negative signed data which is a sign of malfunction: Libraries/MVC/NDK/jni/Framework3/../Libraries/Framework3/src/RendererHLSLCg.cpp:DrawPrimitiveUP:1755 04-03 06:37:27.148 1090 1103 I libIndieLibX: vb_=-1 04-03 06:37:27.198 1090 1103 I libIndieLibX: /home/tronty/IndieLibX/DesktopProjects/NDK_gl_code2/../../Libraries/MVC/NDK/jni/Framework3/../Libraries/Framework3/src/RendererGLES.cpp:addVertexBufferVrtl:954 04-03 06:37:27.198 1090 1103 I libIndieLibX: size=64 04-03 06:37:27.208 1090 1103 I libIndieLibX: data=-1440399356 04-03 06:37:27.208 1090 1103 I libIndieLibX: aold=-1 04-03 06:37:27.218 1090 1103 I libIndieLibX: /home/tronty/IndieLibX/DesktopProjects/NDK_gl_code2/../../Libraries/MVC/NDK/jni/Framework3/../Libraries/Framework3/src/RendererGLES2.cpp:changeVertexBufferVrtl:161 04-03 06:37:27.218 1090 1103 I libIndieLibX: glVertexAttribPointer: 04-03 06:37:27.218 1090 1103 I libIndieLibX: index=1 04-03 06:37:27.218 1090 1103 I libIndieLibX: size=0,2 04-03 06:37:27.218 1090 1103 I libIndieLibX: type=5126 04-03 06:37:27.218 1090 1103 I libIndieLibX: stride=16 04-03 06:37:27.218 1090 1103 I libIndieLibX: base=-1440399356 04-03 06:37:27.318 1090 1103 I libIndieLibX: pointer=-1440399356
I edited the emulator configuration file: $HOME/adt-bundle/sdk/platforms/android-19/skins/WVGA800/hardware.ini . I increased the heap and ram sizes: # skin-specific hardware values hw.lcd.density=240 #vm.heapSize=48 #hw.ramSize=512 vm.heapSize=480 hw.ramSize=5120 There was no positive effect in the log file (NDK2.log). Result was the same odd negative signed data in the log. Other place to specify larger values is the call to emulator: $(ANDROID_SDK)/tools/emulator -force-32bit -memory 128 -cache-size 256 -partition-size 256 -avd avd19 -gpu on If memory/cache-size/partition-size is too large the emulator start is very slow. The result was the same odd negative signed data in the log. I added some memory related C functions to the STX library: long getNativeHeapSize(); long getNativeHeapAllocatedSize(); long getNativeHeapFreeSize(); On android there is consumed somewhat more heap memory than on Ubuntu: NDK: 04-10 09:50:28.554 1326 1339 I libgl2jni: NativeHeapAllocatedSize=10283840 04-10 09:50:28.624 1326 1339 I libgl2jni: NativeHeapSize=10387456 04-10 09:50:28.624 1326 1339 I libgl2jni: NativeHeapFreeSize=43656 Ubuntu: HeapAllocatedSize=3826432 HeapSize=0 HeapFreeSize=290048 The odd negative signed data in NDK2.log appeared to be positive signed after all. After changing some %d:s and %ld:s in some LOG_PRINT statements to %x:s. So now there are only two good clues (I libIndieLibX: GL error:) about what is wrong with SimpleTexture sample and Framework3 library: 04-18 11:40:36.928 1339 1353 I libIndieLibX: /home/tronty/IndieLibX/DesktopProjects/NDK_gl_code2/../../Libraries/MVC/NDK/jni/Framework3/../Libraries/Framework3/src/RendererGLES2.cpp:applyConstants:212 04-18 11:40:36.928 1339 1353 I libIndieLibX: uni->name:worldViewProj 04-18 11:40:36.938 1339 1353 I libIndieLibX: uni->type:14 04-18 11:40:36.938 1339 1353 I libIndieLibX: uni->index:0 04-18 11:40:36.938 1339 1353 I libIndieLibX: uni->nElements:1 04-18 11:40:36.938 1339 1353 I libIndieLibX: uni->data:b7648728 04-18 11:40:36.938 1339 1353 I libIndieLibX: GL error: 04-18 11:40:36.598 1339 1353 I libIndieLibX: /home/tronty/IndieLibX/DesktopProjects/NDK_gl_code2/../../Libraries/MVC/NDK/jni/Framework3/../Libraries/Framework3/src/RendererGLES.cpp:addTexture:1524 04-18 11:40:36.608 1339 1353 I libIndieLibX: glTexImage2D: 04-18 11:40:36.618 1339 1353 I libIndieLibX: glTarget=3553 04-18 11:40:36.618 1339 1353 I libIndieLibX: mipMapLevel=0 04-18 11:40:36.628 1339 1353 I libIndieLibX: internalFormat=32849 04-18 11:40:36.628 1339 1353 I libIndieLibX: WIDTH=128 04-18 11:40:36.628 1339 1353 I libIndieLibX: HEIGHT=128 04-18 11:40:36.628 1339 1353 I libIndieLibX: srcFormat=6407 04-18 11:40:36.628 1339 1353 I libIndieLibX: srcType=5121 04-18 11:40:36.628 1339 1353 I libIndieLibX: data=b766b528 04-18 11:40:36.628 1339 1353 I libIndieLibX: GL error: After correcting RendererGLES.cpp file, there remains only one error message in the log (NDK2.log): 04-19 09:51:47.139 1194 1207 I libIndieLibX: /home/tronty/IndieLibX/DesktopProjects/NDK_gl_code2/../../Libraries/MVC/NDK/jni/Framework3/../Libraries/Framework3/src/RendererGLES2.cpp:applyConstants:212 04-19 09:51:47.139 1194 1207 I libIndieLibX: uni->name:worldViewProj 04-19 09:51:47.139 1194 1207 I libIndieLibX: uni->type:14 04-19 09:51:47.139 1194 1207 I libIndieLibX: uni->index:0 04-19 09:51:47.139 1194 1207 I libIndieLibX: uni->nElements:1 04-19 09:51:47.139 1194 1207 I libIndieLibX: uni->data:b850f120 04-19 09:51:47.139 1194 1207 I libIndieLibX: GL error: 04-19 09:51:47.139 1194 1207 I libIndieLibX: file=/home/tronty/IndieLibX/DesktopProjects/NDK_gl_code2/../../Libraries/MVC/NDK/jni/Framework3/../Libraries/Framework3/src/RendererGLES2.cpp: 04-19 09:51:47.139 1194 1207 I libIndieLibX: fn=applyConstants: 04-19 09:51:47.139 1194 1207 I libIndieLibX: line=219: 04-19 09:51:47.139 1194 1207 I libIndieLibX: 0x00000501
$HOME/IndieLibX/Libraries/SDL2-2.0.4/android-project/jni/Application.mk: APP_ABI := armeabi mips x86 # works in the emulator APP_ABI := x86 # does not work in the emulator