Add test that validates GrGLInterfaces

Review URL: http://codereview.appspot.com/5304048/



git-svn-id: http://skia.googlecode.com/svn/trunk@2510 2bbb7eff-a529-9590-31e7-b0007b416f81

4 files changed, 54 insertions, 3 deletions

diff --git a/src/gpu/mac/SkNativeGLContext_mac.cpp b/src/gpu/mac/SkNativeGLContext_mac.cpp
index 3f864c2e01..ad68c40f57 100644
--- a/src/gpu/mac/SkNativeGLContext_mac.cpp
+++ b/src/gpu/mac/SkNativeGLContext_mac.cpp
@@ -7,6 +7,16 @@
  */
 #include "SkNativeGLContext.h"
 
+SkNativeGLContext::AutoContextRestore::AutoContextRestore() {
+    fOldAGLContext = aglGetCurrentContext();
+}
+
+SkNativeGLContext::AutoContextRestore::~AutoContextRestore() {
+    aglSetCurrentContext(fOldAGLContext);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
 SkNativeGLContext::SkNativeGLContext() 
     : fContext(NULL) {
 }
diff --git a/src/gpu/mesa/SkMesaGLContext.cpp b/src/gpu/mesa/SkMesaGLContext.cpp
index 23ccc9593e..5440a90569 100644
--- a/src/gpu/mesa/SkMesaGLContext.cpp
+++ b/src/gpu/mesa/SkMesaGLContext.cpp
@@ -10,6 +10,23 @@
 
 #include "SkMesaGLContext.h"
 
+SkMesaGLContext::AutoContextRestore::AutoContextRestore() {
+    fOldContext = (Context)OSMesaGetCurrentContext();
+    if (NULL != (OSMesaContext)fOldContext) {
+        OSMesaGetColorBuffer((OSMesaContext)fOldContext,
+                              &fOldWidth, &fOldHeight,
+                              &fOldFormat, &fOldImage); 
+    }
+}
+
+SkMesaGLContext::AutoContextRestore::~AutoContextRestore() {
+    if (NULL != fOldContext) {
+        OSMesaMakeCurrent((OSMesaContext)fOldContext, fOldImage, 
+                          fOldFormat, fOldWidth, fOldHeight);
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
 
 SkMesaGLContext::SkMesaGLContext()
     : fContext(NULL)
diff --git a/src/gpu/unix/SkNativeGLContext_unix.cpp b/src/gpu/unix/SkNativeGLContext_unix.cpp
index 870ff45a4f..907e2b8238 100644
--- a/src/gpu/unix/SkNativeGLContext_unix.cpp
+++ b/src/gpu/unix/SkNativeGLContext_unix.cpp
@@ -9,6 +9,19 @@
 
 #include <GL/glu.h>
 
+SkNativeGLContext::AutoContextRestore::AutoContextRestore() {
+    fOldGLXContext = glXGetCurrentContext();
+    fOldDisplay = glXGetCurrentDisplay();
+    fOldDrawable = glXGetCurrentDrawable();
+}
+
+SkNativeGLContext::AutoContextRestore::~AutoContextRestore() {
+    if (NULL != fOldDisplay) {
+        glXMakeCurrent(fOldDisplay, fOldDrawable, fOldGLXContext);
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
 
 static bool ctxErrorOccurred = false;
 static int ctxErrorHandler(Display *dpy, XErrorEvent *ev) {
diff --git a/src/gpu/win/SkNativeGLContext_win.cpp b/src/gpu/win/SkNativeGLContext_win.cpp
index c19f7cca45..5d518dd138 100644
--- a/src/gpu/win/SkNativeGLContext_win.cpp
+++ b/src/gpu/win/SkNativeGLContext_win.cpp
@@ -11,12 +11,23 @@
 #define WIN32_LEAN_AND_MEAN
 #include <Windows.h>
 
+SkNativeGLContext::AutoContextRestore::AutoContextRestore() {
+    fOldHGLRC = wglGetCurrentContext();
+    fOldHDC = wglGetCurrentDC();
+}
+
+SkNativeGLContext::AutoContextRestore::~AutoContextRestore() {
+    wglMakeCurrent(fOldHDC, fOldHGLRC);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
 ATOM SkNativeGLContext::gWC = 0;
 
 SkNativeGLContext::SkNativeGLContext()
-        : fWindow(NULL)
-        , fDeviceContext(NULL)
-        , fGlRenderContext(0) {
+    : fWindow(NULL)
+    , fDeviceContext(NULL)
+    , fGlRenderContext(0) {
 }
 
 SkNativeGLContext::~SkNativeGLContext() {