Add support for glMapBufferRange. Use glMapBufferRange and glMapBufferSubData.

src/gpu/GrBufferAllocPool.cpp

 
 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrBufferAllocPool.h"
@@ skipping 285 matching lines @@
     }
 
     SkASSERT(NULL == fBufferPtr);
 
     // If the buffer is CPU-backed we lock it because it is free to do so and saves a copy.
     // Otherwise when buffer locking is supported:
     //      a) If the frequently reset hint is set we only lock when the requested size meets a
     //      threshold (since we don't expect it is likely that we will see more vertex data)
     //      b) If the hint is not set we lock if the buffer size is greater than the threshold.
     bool attemptLock = block.fBuffer->isCPUBacked();
-    if (!attemptLock && fGpu->caps()->bufferLockSupport()) {
+    if (!attemptLock && GrDrawTargetCaps::kNone_MapFlags != fGpu->caps()->mapBufferFlags()) {
         if (fFrequentResetHint) {
             attemptLock = requestSize > GR_GEOM_BUFFER_LOCK_THRESHOLD;
         } else {
             attemptLock = size > GR_GEOM_BUFFER_LOCK_THRESHOLD;
         }
     }
 
     if (attemptLock) {
         fBufferPtr = block.fBuffer->lock();
     }
@@ skipping 27 matching lines @@
 }
 
 void GrBufferAllocPool::flushCpuData(GrGeometryBuffer* buffer,
                                      size_t flushSize) {
     SkASSERT(NULL != buffer);
     SkASSERT(!buffer->isLocked());
     SkASSERT(fCpuData.get() == fBufferPtr);
     SkASSERT(flushSize <= buffer->gpuMemorySize());
     VALIDATE(true);
 
-    if (fGpu->caps()->bufferLockSupport() &&
+    if (GrDrawTargetCaps::kNone_MapFlags != fGpu->caps()->mapBufferFlags() &&
         flushSize > GR_GEOM_BUFFER_LOCK_THRESHOLD) {
         void* data = buffer->lock();
         if (NULL != data) {
             memcpy(data, fBufferPtr, flushSize);
             buffer->unlock();
             return;
         }
     }
     buffer->updateData(fBufferPtr, flushSize);
     VALIDATE(true);
@@ skipping 114 matching lines @@
     }
 }
 
 int GrIndexBufferAllocPool::preallocatedBufferIndices() const {
     return static_cast<int>(INHERITED::preallocatedBufferSize() / sizeof(uint16_t));
 }
 
 int GrIndexBufferAllocPool::currentBufferIndices() const {
     return currentBufferItems(sizeof(uint16_t));
 }