From a8fce5d6e2cfc4971ca932a18e38662de3482cbc Mon Sep 17 00:00:00 2001
From: Friedemann Kleint <Friedemann.Kleint@digia.com>
Date: Thu, 14 Feb 2013 09:43:16 +0100
Subject: ANGLE: Fix static build.

Introduce  QT_OPENGL_ES_2_ANGLE_STATIC define for static builds
and modify export accordingly. Provided static instances
of gl::Current and egl::Current for Qt's single threaded
use.

Task-number: QTBUG-28196

Change-Id: Ia75699d6da103fb8dd9d5fe97c1ee51e48a74406
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Kai Koehne <kai.koehne@digia.com>
---
 src/3rdparty/angle/src/libEGL/main.cpp    | 58 +++++++++++++++----------------
 src/3rdparty/angle/src/libGLESv2/main.cpp | 32 ++++++++++++-----
 2 files changed, 51 insertions(+), 39 deletions(-)

(limited to 'src/3rdparty/angle/src')

diff --git a/src/3rdparty/angle/src/libEGL/main.cpp b/src/3rdparty/angle/src/libEGL/main.cpp
index dc24c4fb04..614bcf67ad 100644
--- a/src/3rdparty/angle/src/libEGL/main.cpp
+++ b/src/3rdparty/angle/src/libEGL/main.cpp
@@ -10,6 +10,8 @@
 
 #include "common/debug.h"
 
+#ifndef QT_OPENGL_ES_2_ANGLE_STATIC
+
 static DWORD currentTLS = TLS_OUT_OF_INDEXES;
 
 extern "C" BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved)
@@ -86,76 +88,72 @@ extern "C" BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved
     return TRUE;
 }
 
+static inline egl::Current *current()
+{
+    return (egl::Current*)TlsGetValue(currentTLS);
+}
+
+#else // !QT_OPENGL_ES_2_ANGLE_STATIC
+
+static egl::Current *current()
+{
+    // No precautions for thread safety taken as ANGLE is used single-threaded in Qt.
+    static egl::Current curr = { EGL_SUCCESS, EGL_OPENGL_ES_API, EGL_NO_DISPLAY, EGL_NO_SURFACE, EGL_NO_SURFACE };
+    return &curr;
+}
+
+#endif // QT_OPENGL_ES_2_ANGLE_STATIC
+
 namespace egl
 {
 void setCurrentError(EGLint error)
 {
-    Current *current = (Current*)TlsGetValue(currentTLS);
-
-    current->error = error;
+    current()->error = error;
 }
 
 EGLint getCurrentError()
 {
-    Current *current = (Current*)TlsGetValue(currentTLS);
-
-    return current->error;
+    return current()->error;
 }
 
 void setCurrentAPI(EGLenum API)
 {
-    Current *current = (Current*)TlsGetValue(currentTLS);
-
-    current->API = API;
+    current()->API = API;
 }
 
 EGLenum getCurrentAPI()
 {
-    Current *current = (Current*)TlsGetValue(currentTLS);
-
-    return current->API;
+    return current()->API;
 }
 
 void setCurrentDisplay(EGLDisplay dpy)
 {
-    Current *current = (Current*)TlsGetValue(currentTLS);
-
-    current->display = dpy;
+    current()->display = dpy;
 }
 
 EGLDisplay getCurrentDisplay()
 {
-    Current *current = (Current*)TlsGetValue(currentTLS);
-
-    return current->display;
+    return current()->display;
 }
 
 void setCurrentDrawSurface(EGLSurface surface)
 {
-    Current *current = (Current*)TlsGetValue(currentTLS);
-
-    current->drawSurface = surface;
+    current()->drawSurface = surface;
 }
 
 EGLSurface getCurrentDrawSurface()
 {
-    Current *current = (Current*)TlsGetValue(currentTLS);
-
-    return current->drawSurface;
+    return current()->drawSurface;
 }
 
 void setCurrentReadSurface(EGLSurface surface)
 {
-    Current *current = (Current*)TlsGetValue(currentTLS);
-
-    current->readSurface = surface;
+    current()->readSurface = surface;
 }
 
 EGLSurface getCurrentReadSurface()
 {
-    Current *current = (Current*)TlsGetValue(currentTLS);
-
-    return current->readSurface;
+    return current()->readSurface;
 }
 }
 
diff --git a/src/3rdparty/angle/src/libGLESv2/main.cpp b/src/3rdparty/angle/src/libGLESv2/main.cpp
index 6e678c2616..3853e41c23 100644
--- a/src/3rdparty/angle/src/libGLESv2/main.cpp
+++ b/src/3rdparty/angle/src/libGLESv2/main.cpp
@@ -14,6 +14,8 @@
 
 #include "libGLESv2/Framebuffer.h"
 
+#ifndef QT_OPENGL_ES_2_ANGLE_STATIC
+
 static DWORD currentTLS = TLS_OUT_OF_INDEXES;
 
 extern "C" BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved)
@@ -72,14 +74,30 @@ extern "C" BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved
     return TRUE;
 }
 
+static gl::Current *current()
+{
+    return (gl::Current*)TlsGetValue(currentTLS);
+}
+
+#else // !QT_OPENGL_ES_2_ANGLE_STATIC
+
+static inline gl::Current *current()
+{
+    // No precautions for thread safety taken as ANGLE is used single-threaded in Qt.
+    static gl::Current curr = { 0, 0 };
+    return &curr;
+}
+
+#endif // QT_OPENGL_ES_2_ANGLE_STATIC
+
 namespace gl
 {
 void makeCurrent(Context *context, egl::Display *display, egl::Surface *surface)
 {
-    Current *current = (Current*)TlsGetValue(currentTLS);
+    Current *curr = current();
 
-    current->context = context;
-    current->display = display;
+    curr->context = context;
+    curr->display = display;
 
     if (context && display && surface)
     {
@@ -89,9 +107,7 @@ void makeCurrent(Context *context, egl::Display *display, egl::Surface *surface)
 
 Context *getContext()
 {
-    Current *current = (Current*)TlsGetValue(currentTLS);
-
-    return current->context;
+    return current()->context;
 }
 
 Context *getNonLostContext()
@@ -115,9 +131,7 @@ Context *getNonLostContext()
 
 egl::Display *getDisplay()
 {
-    Current *current = (Current*)TlsGetValue(currentTLS);
-
-    return current->display;
+    return current()->display;
 }
 
 IDirect3DDevice9 *getDevice()
-- 
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