emulator/opengl: Fix GCC 4.8 warnings.

This fixes a few compiler warnings when building the GPU emulation
libraries with GCC 4.8. Note that GLbyte is defined as khronos_int8_t
which is signed!

Change-Id: I52027cd2eb20d6162983319f22d4da150ff514ed

3 files changed, 27 insertions, 27 deletions

diff --git a/emulator/opengl/host/libs/Translator/EGL/EglWindowsApi.cpp b/emulator/opengl/host/libs/Translator/EGL/EglWindowsApi.cpp
index c245ba5..5b48fcb 100644
--- a/emulator/opengl/host/libs/Translator/EGL/EglWindowsApi.cpp
+++ b/emulator/opengl/host/libs/Translator/EGL/EglWindowsApi.cpp
@@ -20,8 +20,7 @@
 #include <stdio.h>
 
 #define IS_TRUE(a) \
-        if(a != true) return false;
-
+        if(a != true) return NULL;
 
 struct DisplayInfo{
     DisplayInfo():dc(NULL),hwnd(NULL),isPixelFormatSet(false){};
@@ -48,9 +47,7 @@ static TlsData *getTLS() {
 
 class WinDisplay{
 public:
-     typedef enum {
-                      DEFAULT_DISPLAY = 0
-                  };
+     enum { DEFAULT_DISPLAY = 0 };
      WinDisplay(){};
      DisplayInfo& getInfo(int configurationIndex){ return getTLS()->m_map[configurationIndex];}
      HDC  getDC(int configId){return getTLS()->m_map[configId].dc;}
diff --git a/emulator/opengl/host/libs/Translator/GLES_CM/GLEScmImp.cpp b/emulator/opengl/host/libs/Translator/GLES_CM/GLEScmImp.cpp
index 7ab177f..3443f59 100644
--- a/emulator/opengl/host/libs/Translator/GLES_CM/GLEScmImp.cpp
+++ b/emulator/opengl/host/libs/Translator/GLES_CM/GLEScmImp.cpp
@@ -2230,10 +2230,12 @@ void glDrawTexOES (T x, T y, T z, T width, T height) {
     GLint viewport[4];
     z = (z>1 ? 1 : (z<0 ?  0 : z));
 
-    T     vertices[4*3] = {x , y, z,
-                             x , y+height, z,
-                             x+width, y+height, z,
-                             x+width, y, z};
+    T vertices[4*3] = {
+        x , y, z,
+        x , static_cast<T>(y+height), z,
+        static_cast<T>(x+width), static_cast<T>(y+height), z,
+        static_cast<T>(x+width), y, z
+    };
     GLfloat texels[ctx->getMaxTexUnits()][4*2];
     memset((void*)texels, 0, ctx->getMaxTexUnits()*4*2*sizeof(GLfloat));
 
diff --git a/emulator/opengl/host/libs/Translator/GLcommon/GLDispatch.cpp b/emulator/opengl/host/libs/Translator/GLcommon/GLDispatch.cpp
index c0e3c5c..7b217fd 100644
--- a/emulator/opengl/host/libs/Translator/GLcommon/GLDispatch.cpp
+++ b/emulator/opengl/host/libs/Translator/GLcommon/GLDispatch.cpp
@@ -45,25 +45,26 @@ static GL_FUNC_PTR getGLFuncAddress(const char *funcName) {
     return ret;
 }
 
-#define LOAD_GL_FUNC(name)  {   void * funcAddrs = NULL;                                    \
-                                if(name == NULL){                                           \
-                                    funcAddrs = (void *)getGLFuncAddress(#name);            \
-                                    if(funcAddrs){                                          \
-                                        *(void**)(void*)(&name) = funcAddrs;                \
-                                    } else {                                                \
-                                        fprintf(stderr,"could not load func %s\n",#name);   \
-                                        *(void**)(void*)(&name) = (void *)dummy_##name;     \
-                                    }                                                       \
-                                }                                                           \
-                           }
+#define LOAD_GL_FUNC(name)  do { \
+        if (!name) { \
+            void* funcAddress = (void *)getGLFuncAddress(#name); \
+            if (funcAddress) { \
+                name = (__typeof__(name))(funcAddress); \
+            } else { \
+                fprintf(stderr, "Could not load func %s\n", #name); \
+                name = (__typeof__(name))(dummy_##name); \
+            } \
+        } \
+    } while (0)
 
-#define LOAD_GLEXT_FUNC(name)  {   void * funcAddrs = NULL;                             \
-                                if(name == NULL){                                       \
-                                funcAddrs = (void *)getGLFuncAddress(#name);            \
-                                if(funcAddrs)                                           \
-                                    *(void**)(void*)(&name) = funcAddrs;                \
-                                }                                                       \
-                           }
+#define LOAD_GLEXT_FUNC(name) do { \
+        if (!name) { \
+            void* funcAddress = (void *)getGLFuncAddress(#name); \
+            if (funcAddress) { \
+                name = (__typeof__(name))(funcAddress); \
+            } \
+        } \
+    } while (0)
 
 /* initializing static GLDispatch members*/