Add a GrPathRange class

src/gpu/gl/GrGLPath.cpp

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrGLPath.h"
 #include "GrGpuGL.h"
@@ skipping 67 matching lines @@
     GR_STATIC_ASSERT(0 == SkPaint::kButt_Cap);
     GR_STATIC_ASSERT(1 == SkPaint::kRound_Cap);
     GR_STATIC_ASSERT(2 == SkPaint::kSquare_Cap);
     GR_STATIC_ASSERT(SK_ARRAY_COUNT(gSkCapsToGrGLCaps) == SkPaint::kCapCount);
 }
 
 }
 
 static const bool kIsWrapped = false; // The constructor creates the GL path object.
 
-GrGLPath::GrGLPath(GrGpuGL* gpu, const SkPath& path, const SkStrokeRec& stroke)
-    : INHERITED(gpu, kIsWrapped, path, stroke) {
-    SkASSERT(!path.isEmpty());
-
-    fPathID = gpu->createGLPathObject();
-
+void GrGLPath::InitPathObject(const GrGLInterface* gl,
+                              GrGLuint pathID,
+                              const SkPath& skPath,
+                              const SkStrokeRec& stroke) {
     SkSTArray<16, GrGLubyte, true> pathCommands;
     SkSTArray<16, SkPoint, true> pathPoints;
 
-    int verbCnt = fSkPath.countVerbs();
-    int pointCnt = fSkPath.countPoints();
+    int verbCnt = skPath.countVerbs();
+    int pointCnt = skPath.countPoints();
     pathCommands.resize_back(verbCnt);
     pathPoints.resize_back(pointCnt);
 
     // TODO: Direct access to path points since we could pass them on directly.
-    fSkPath.getPoints(&pathPoints[0], pointCnt);
-    fSkPath.getVerbs(&pathCommands[0], verbCnt);
+    skPath.getPoints(&pathPoints[0], pointCnt);
+    skPath.getVerbs(&pathCommands[0], verbCnt);
 
     SkDEBUGCODE(int numPts = 0);
     for (int i = 0; i < verbCnt; ++i) {
         SkPath::Verb v = static_cast<SkPath::Verb>(pathCommands[i]);
         pathCommands[i] = verb_to_gl_path_cmd(v);
         SkDEBUGCODE(numPts += num_pts(v));
     }
     SkASSERT(pathPoints.count() == numPts);
 
-    GL_CALL(PathCommands(fPathID,
-                         verbCnt, &pathCommands[0],
-                         2 * pointCnt, GR_GL_FLOAT, &pathPoints[0]));
+    GR_GL_CALL(gl, PathCommands(pathID,
+                                verbCnt, &pathCommands[0],
+                                2 * pointCnt, GR_GL_FLOAT, &pathPoints[0]));
 
     if (stroke.needToApply()) {
-        GL_CALL(PathParameterf(fPathID, GR_GL_PATH_STROKE_WIDTH, SkScalarToFloat(stroke.getWidth())));
-        GL_CALL(PathParameterf(fPathID, GR_GL_PATH_MITER_LIMIT, SkScalarToFloat(stroke.getMiter())));
+        SkASSERT(!stroke.isHairlineStyle());
+        GR_GL_CALL(gl, PathParameterf(pathID, GR_GL_PATH_STROKE_WIDTH, SkScalarToFloat(stroke.getWidth())));
+        GR_GL_CALL(gl, PathParameterf(pathID, GR_GL_PATH_MITER_LIMIT, SkScalarToFloat(stroke.getMiter())));
         GrGLenum join = join_to_gl_join(stroke.getJoin());
-        GL_CALL(PathParameteri(fPathID, GR_GL_PATH_JOIN_STYLE, join));
+        GR_GL_CALL(gl, PathParameteri(pathID, GR_GL_PATH_JOIN_STYLE, join));
         GrGLenum cap = cap_to_gl_cap(stroke.getCap());
-        GL_CALL(PathParameteri(fPathID, GR_GL_PATH_INITIAL_END_CAP, cap));
-        GL_CALL(PathParameteri(fPathID, GR_GL_PATH_TERMINAL_END_CAP, cap));
-
-        // FIXME: try to account for stroking, without rasterizing the stroke.
-        fBounds.outset(SkScalarToFloat(stroke.getWidth()), SkScalarToFloat(stroke.getWidth()));
+        GR_GL_CALL(gl, PathParameteri(pathID, GR_GL_PATH_INITIAL_END_CAP, cap));
+        GR_GL_CALL(gl, PathParameteri(pathID, GR_GL_PATH_TERMINAL_END_CAP, cap));
     }
 }
 
+GrGLPath::GrGLPath(GrGpuGL* gpu, const SkPath& path, const SkStrokeRec& stroke)
+    : INHERITED(gpu, kIsWrapped, path, stroke) {
+    SkASSERT(!path.isEmpty());
+
+    fPathID = gpu->createGLPathObject();
+
+    InitPathObject(static_cast<GrGpuGL*>(this->getGpu())->glInterface(),
+                   fPathID, fSkPath, stroke);
+
+    if (stroke.needToApply()) {
+        // FIXME: try to account for stroking, without rasterizing the stroke.
+        fBounds.outset(stroke.getWidth(), stroke.getWidth());
+    }
+}
+
 GrGLPath::~GrGLPath() {
     this->release();
 }
 
 void GrGLPath::onRelease() {
     if (0 != fPathID && !this->isWrapped()) {
         static_cast<GrGpuGL*>(this->getGpu())->deleteGLPathObject(fPathID);
         fPathID = 0;
     }
 
     INHERITED::onRelease();
 }
 
 void GrGLPath::onAbandon() {
     fPathID = 0;
 
     INHERITED::onAbandon();
 }