| // Copyright 2016 The SwiftShader Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // Query.cpp: Implements the es2::Query class |
| |
| #include "Query.h" |
| |
| #include "main.h" |
| #include "Common/Thread.hpp" |
| |
| namespace es2 |
| { |
| |
| Query::Query(GLuint name, GLenum type) : NamedObject(name) |
| { |
| mQuery = nullptr; |
| mStatus = GL_FALSE; |
| mResult = GL_FALSE; |
| mType = type; |
| } |
| |
| Query::~Query() |
| { |
| delete mQuery; |
| } |
| |
| void Query::begin() |
| { |
| if(!mQuery) |
| { |
| sw::Query::Type type; |
| switch(mType) |
| { |
| case GL_ANY_SAMPLES_PASSED_EXT: |
| case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT: |
| type = sw::Query::FRAGMENTS_PASSED; |
| break; |
| case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: |
| type = sw::Query::TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN; |
| break; |
| default: |
| UNREACHABLE(mType); |
| return; |
| } |
| |
| mQuery = new sw::Query(type); |
| |
| if(!mQuery) |
| { |
| return error(GL_OUT_OF_MEMORY); |
| } |
| } |
| |
| Device *device = getDevice(); |
| |
| mQuery->begin(); |
| device->addQuery(mQuery); |
| switch(mType) |
| { |
| case GL_ANY_SAMPLES_PASSED_EXT: |
| case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT: |
| device->setOcclusionEnabled(true); |
| break; |
| case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: |
| device->setTransformFeedbackQueryEnabled(true); |
| break; |
| default: |
| ASSERT(false); |
| } |
| } |
| |
| void Query::end() |
| { |
| if(!mQuery) |
| { |
| return error(GL_INVALID_OPERATION); |
| } |
| |
| Device *device = getDevice(); |
| |
| mQuery->end(); |
| device->removeQuery(mQuery); |
| switch(mType) |
| { |
| case GL_ANY_SAMPLES_PASSED_EXT: |
| case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT: |
| device->setOcclusionEnabled(false); |
| break; |
| case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: |
| device->setTransformFeedbackQueryEnabled(false); |
| break; |
| default: |
| ASSERT(false); |
| } |
| |
| mStatus = GL_FALSE; |
| mResult = GL_FALSE; |
| } |
| |
| GLuint Query::getResult() |
| { |
| if(mQuery) |
| { |
| while(!testQuery()) |
| { |
| sw::Thread::yield(); |
| } |
| } |
| |
| return (GLuint)mResult; |
| } |
| |
| GLboolean Query::isResultAvailable() |
| { |
| if(mQuery) |
| { |
| testQuery(); |
| } |
| |
| return mStatus; |
| } |
| |
| GLenum Query::getType() const |
| { |
| return mType; |
| } |
| |
| GLboolean Query::testQuery() |
| { |
| if(mQuery != nullptr && mStatus != GL_TRUE) |
| { |
| if(!mQuery->building && mQuery->reference == 0) |
| { |
| unsigned int resultSum = mQuery->data; |
| mStatus = GL_TRUE; |
| |
| switch(mType) |
| { |
| case GL_ANY_SAMPLES_PASSED_EXT: |
| case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT: |
| mResult = (resultSum > 0) ? GL_TRUE : GL_FALSE; |
| break; |
| case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: |
| mResult = resultSum; |
| break; |
| default: |
| ASSERT(false); |
| } |
| } |
| |
| return mStatus; |
| } |
| |
| return GL_TRUE; // Prevent blocking when query is nullptr |
| } |
| } |