| // |
| // Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| |
| // Fence.cpp: Implements the gl::Fence class, which supports the GL_NV_fence extension. |
| |
| #include "libGLESv2/Fence.h" |
| |
| #include "libGLESv2/renderer/renderer9_utils.h" |
| |
| namespace gl |
| { |
| |
| Fence::Fence(rx::Renderer *renderer) |
| { |
| mRenderer = rx::Renderer9::makeRenderer9(renderer); // D3D9_REPLACE |
| |
| mQuery = NULL; |
| mCondition = GL_NONE; |
| mStatus = GL_FALSE; |
| } |
| |
| Fence::~Fence() |
| { |
| if (mQuery != NULL) |
| { |
| mRenderer->freeEventQuery(mQuery); |
| } |
| } |
| |
| GLboolean Fence::isFence() |
| { |
| // GL_NV_fence spec: |
| // A name returned by GenFencesNV, but not yet set via SetFenceNV, is not the name of an existing fence. |
| return mQuery != NULL; |
| } |
| |
| // D3D9_REPLACE |
| void Fence::setFence(GLenum condition) |
| { |
| if (!mQuery) |
| { |
| mQuery = mRenderer->allocateEventQuery(); |
| if (!mQuery) |
| { |
| return error(GL_OUT_OF_MEMORY); |
| } |
| } |
| |
| HRESULT result = mQuery->Issue(D3DISSUE_END); |
| ASSERT(SUCCEEDED(result)); |
| |
| mCondition = condition; |
| mStatus = GL_FALSE; |
| } |
| |
| // D3D9_REPLACE |
| GLboolean Fence::testFence() |
| { |
| if (mQuery == NULL) |
| { |
| return error(GL_INVALID_OPERATION, GL_TRUE); |
| } |
| |
| HRESULT result = mQuery->GetData(NULL, 0, D3DGETDATA_FLUSH); |
| |
| if (checkDeviceLost(result)) |
| { |
| return error(GL_OUT_OF_MEMORY, GL_TRUE); |
| } |
| |
| ASSERT(result == S_OK || result == S_FALSE); |
| mStatus = result == S_OK; |
| return mStatus; |
| } |
| |
| void Fence::finishFence() |
| { |
| if (mQuery == NULL) |
| { |
| return error(GL_INVALID_OPERATION); |
| } |
| |
| while (!testFence()) |
| { |
| Sleep(0); |
| } |
| } |
| |
| void Fence::getFenceiv(GLenum pname, GLint *params) |
| { |
| if (mQuery == NULL) |
| { |
| return error(GL_INVALID_OPERATION); |
| } |
| |
| switch (pname) |
| { |
| case GL_FENCE_STATUS_NV: |
| { |
| // GL_NV_fence spec: |
| // Once the status of a fence has been finished (via FinishFenceNV) or tested and the returned status is TRUE (via either TestFenceNV |
| // or GetFenceivNV querying the FENCE_STATUS_NV), the status remains TRUE until the next SetFenceNV of the fence. |
| if (mStatus) |
| { |
| params[0] = GL_TRUE; |
| return; |
| } |
| |
| HRESULT result = mQuery->GetData(NULL, 0, 0); // D3D9_REPLACE |
| |
| if (checkDeviceLost(result)) |
| { |
| params[0] = GL_TRUE; |
| return error(GL_OUT_OF_MEMORY); |
| } |
| |
| ASSERT(result == S_OK || result == S_FALSE); |
| mStatus = result == S_OK; |
| params[0] = mStatus; |
| |
| break; |
| } |
| case GL_FENCE_CONDITION_NV: |
| params[0] = mCondition; |
| break; |
| default: |
| return error(GL_INVALID_ENUM); |
| break; |
| } |
| } |
| |
| } |