Reduce glGets for stencil bits.
Clean up GL vs Gr rect conventions for viewport and scissor.
Review URL: http://codereview.appspot.com/4185056/
git-svn-id: http://skia.googlecode.com/svn/trunk@813 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/include/GrGLConfig.h b/gpu/include/GrGLConfig.h
index e20e3a5..dcad9a1 100644
--- a/gpu/include/GrGLConfig.h
+++ b/gpu/include/GrGLConfig.h
@@ -384,4 +384,40 @@
#define GR_GLEXT(exts, X) exts. X; GR_GL_LOG_CALLS_IMPL(X); GR_GL_CHECK_ERROR_IMPL(X);
#define GR_GLEXT_NO_ERR(exts, X) GrGLClearErr(); exts. X; GR_GL_LOG_CALLS_IMPL(X); GR_GL_CHECK_ERROR_IMPL(X);
+////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Helpers for glGetString()
+ */
+bool has_gl_extension(const char* ext);
+void gl_version(int* major, int* minor);
+
+////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * GrGL_RestoreResetRowLength() will reset GL_UNPACK_ROW_LENGTH to 0. We write
+ * this wrapper, since GL_UNPACK_ROW_LENGTH is not available on all GL versions
+ */
+#if GR_SUPPORT_GLDESKTOP
+ static inline void GrGL_RestoreResetRowLength() {
+ GR_GL(PixelStorei(GL_UNPACK_ROW_LENGTH, 0));
+ }
+#else
+ #define GrGL_RestoreResetRowLength()
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Some drivers want the var-int arg to be zero-initialized on input.
+ */
+#define GR_GL_INIT_ZERO 0
+#define GR_GL_GetIntegerv(e, p) \
+ do { \
+ *(p) = GR_GL_INIT_ZERO; \
+ GR_GL(GetIntegerv(e, p)); \
+ } while (0)
+
+////////////////////////////////////////////////////////////////////////////////
+
#endif
\ No newline at end of file