Make GrGLShaderVar objects aware of whether they are uniform, varying, or
attribute varibles. Extract GLSL generation enum and utility function into
new GrGLSL header.
git-svn-id: http://skia.googlecode.com/svn/trunk@2827 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrGLSL.cpp b/src/gpu/GrGLSL.cpp
new file mode 100644
index 0000000..1062c81
--- /dev/null
+++ b/src/gpu/GrGLSL.cpp
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "GrGLSL.h"
+
+GrGLSLGeneration GetGLSLGeneration(GrGLBinding binding,
+ const GrGLInterface* gl) {
+ GrGLSLVersion ver = GrGLGetGLSLVersion(gl);
+ switch (binding) {
+ case kDesktop_GrGLBinding:
+ GrAssert(ver >= GR_GLSL_VER(1,10));
+ if (ver >= GR_GLSL_VER(1,50)) {
+ return k150_GLSLGeneration;
+ } else if (ver >= GR_GLSL_VER(1,30)) {
+ return k130_GLSLGeneration;
+ } else {
+ return k110_GLSLGeneration;
+ }
+ case kES2_GrGLBinding:
+ // version 1.00 of ES GLSL based on ver 1.20 of desktop GLSL
+ GrAssert(ver >= GR_GL_VER(1,00));
+ return k110_GLSLGeneration;
+ default:
+ GrCrash("Unknown GL Binding");
+ return k110_GLSLGeneration; // suppress warning
+ }
+}
+