Separate out the texture matrix from the coord-system change matrix in GrSamplerState. This is a step towards moving texture matrix to GrCustomStage.

R=robertphillips@google.com
Review URL: https://codereview.appspot.com/6721047

git-svn-id: http://skia.googlecode.com/svn/trunk@5973 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrDrawState.cpp b/src/gpu/GrDrawState.cpp
index cc11f6c..c95049a 100644
--- a/src/gpu/GrDrawState.cpp
+++ b/src/gpu/GrDrawState.cpp
@@ -54,7 +54,7 @@
         fDrawState->setViewMatrix(fViewMatrix);
         for (int s = 0; s < GrDrawState::kNumStages; ++s) {
             if (fRestoreMask & (1 << s)) {
-                fDrawState->sampler(s)->setMatrixDeprecated(fSamplerMatrices[s]);
+                fDrawState->sampler(s)->restoreCoordChange(fSavedCoordChanges[s]);
             }
         }
     }
@@ -77,8 +77,8 @@
     for (int s = 0; s < GrDrawState::kNumStages; ++s) {
         if (!(explicitCoordStageMask & (1 << s)) && drawState->isStageEnabled(s)) {
             fRestoreMask |= (1 << s);
-            fSamplerMatrices[s] = drawState->sampler(s)->getMatrix();
-            drawState->sampler(s)->preConcatMatrix(preconcatMatrix);
+            fDrawState->sampler(s)->saveCoordChange(&fSavedCoordChanges[s]);
+            drawState->sampler(s)->preConcatCoordChange(preconcatMatrix);
         }
     }
 }
@@ -90,7 +90,7 @@
         fDrawState->setViewMatrix(fViewMatrix);
         for (int s = 0; s < GrDrawState::kNumStages; ++s) {
             if (fRestoreMask & (1 << s)) {
-                fDrawState->sampler(s)->setMatrixDeprecated(fSamplerMatrices[s]);
+                fDrawState->sampler(s)->restoreCoordChange(fSavedCoordChanges[s]);
             }
         }
     }
@@ -124,8 +124,8 @@
             }
             fRestoreMask |= (1 << s);
             GrSamplerState* sampler = drawState->sampler(s);
-            fSamplerMatrices[s] = sampler->getMatrix();
-            sampler->preConcatMatrix(invVM);
+            sampler->saveCoordChange(&fSavedCoordChanges[s]);
+            sampler->preConcatCoordChange(invVM);
         }
     }
     drawState->viewMatrix()->reset();