Make all GrFragmentProcessors GL independent.

TBR=bsalomon@google.com

BUG=skia:

Review URL: https://codereview.chromium.org/1434313002

1 files changed, 52 insertions, 0 deletions

diff --git a/src/gpu/glsl/GrGLSLUtil.cpp b/src/gpu/glsl/GrGLSLUtil.cpp
new file mode 100644
index 0000000000..5a333244b2
--- /dev/null
+++ b/src/gpu/glsl/GrGLSLUtil.cpp
@@ -0,0 +1,52 @@
+/*
+* Copyright 2015 Google Inc.
+*
+* Use of this source code is governed by a BSD-style license that can be
+* found in the LICENSE file.
+*/
+
+#include "GrGLSLUtil.h"
+#include "SkMatrix.h"
+
+template<> void GrGLSLGetMatrix<3>(float* dest, const SkMatrix& src) {
+    // Col 0
+    dest[0] = SkScalarToFloat(src[SkMatrix::kMScaleX]);
+    dest[1] = SkScalarToFloat(src[SkMatrix::kMSkewY]);
+    dest[2] = SkScalarToFloat(src[SkMatrix::kMPersp0]);
+
+    // Col 1
+    dest[3] = SkScalarToFloat(src[SkMatrix::kMSkewX]);
+    dest[4] = SkScalarToFloat(src[SkMatrix::kMScaleY]);
+    dest[5] = SkScalarToFloat(src[SkMatrix::kMPersp1]);
+
+    // Col 2
+    dest[6] = SkScalarToFloat(src[SkMatrix::kMTransX]);
+    dest[7] = SkScalarToFloat(src[SkMatrix::kMTransY]);
+    dest[8] = SkScalarToFloat(src[SkMatrix::kMPersp2]);
+}
+
+template<> void GrGLSLGetMatrix<4>(float* dest, const SkMatrix& src) {
+    // Col 0
+    dest[0] = SkScalarToFloat(src[SkMatrix::kMScaleX]);
+    dest[1] = SkScalarToFloat(src[SkMatrix::kMSkewY]);
+    dest[2] = 0;
+    dest[3] = SkScalarToFloat(src[SkMatrix::kMPersp0]);
+
+    // Col 1
+    dest[4] = SkScalarToFloat(src[SkMatrix::kMSkewX]);
+    dest[5] = SkScalarToFloat(src[SkMatrix::kMScaleY]);
+    dest[6] = 0;
+    dest[7] = SkScalarToFloat(src[SkMatrix::kMPersp1]);
+
+    // Col 2
+    dest[8] = 0;
+    dest[9] = 0;
+    dest[10] = 1;
+    dest[11] = 0;
+
+    // Col 3
+    dest[12] = SkScalarToFloat(src[SkMatrix::kMTransX]);
+    dest[13] = SkScalarToFloat(src[SkMatrix::kMTransY]);
+    dest[14] = 0;
+    dest[15] = SkScalarToFloat(src[SkMatrix::kMPersp2]);
+}