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OgreRenderSystem.cpp
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/*
-----------------------------------------------------------------------------
This source file is part of OGRE-Next
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/
Copyright (c) 2000-2014 Torus Knot Software Ltd
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-----------------------------------------------------------------------------
*/
#include "OgreStableHeaders.h"
// RenderSystem implementation
// Note that most of this class is abstract since
// we cannot know how to implement the behaviour without
// being aware of the 3D API. However there are a few
// simple functions which can have a base implementation
#include "OgreRenderSystem.h"
#include "Compositor/OgreCompositorManager2.h"
#include "Compositor/OgreCompositorWorkspace.h"
#include "OgreDepthBuffer.h"
#include "OgreDescriptorSetUav.h"
#include "OgreException.h"
#include "OgreHardwareOcclusionQuery.h"
#include "OgreHlmsPso.h"
#include "OgreIteratorWrappers.h"
#include "OgreLogManager.h"
#include "OgreLwString.h"
#include "OgreMaterialManager.h"
#include "OgreProfiler.h"
#include "OgreRoot.h"
#include "OgreTextureGpuManager.h"
#include "OgreViewport.h"
#include "OgreWindow.h"
#include "Vao/OgreUavBufferPacked.h"
#include "Vao/OgreVaoManager.h"
#include "Vao/OgreVertexArrayObject.h"
#if OGRE_NO_RENDERDOC_INTEGRATION == 0
# include "renderdoc/renderdoc_app.h"
# if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
# define WIN32_LEAN_AND_MEAN
# define VC_EXTRALEAN
# define NOMINMAX
# include <windows.h>
# endif
#endif
namespace Ogre
{
RenderSystem::ListenerList RenderSystem::msSharedEventListeners;
//-----------------------------------------------------------------------
RenderSystem::RenderSystem() :
mCurrentRenderPassDescriptor( 0 ),
mMaxBoundViewports( 16u ),
mVaoManager( 0 ),
mTextureGpuManager( 0 )
#if OGRE_DEBUG_MODE >= OGRE_DEBUG_HIGH
,
mDebugShaders( true )
#else
,
mDebugShaders( false )
#endif
,
mWBuffer( false ),
mInvertVertexWinding( false ),
mDisabledTexUnitsFrom( 0 ),
mCurrentPassIterationCount( 0 ),
mCurrentPassIterationNum( 0 ),
mDerivedDepthBias( false ),
mDerivedDepthBiasBase( 0.0f ),
mDerivedDepthBiasMultiplier( 0.0f ),
mDerivedDepthBiasSlopeScale( 0.0f ),
mUavRenderingDirty( false ),
mUavStartingSlot( 1 ),
mUavRenderingDescSet( 0 ),
mGlobalInstanceVertexBufferVertexDeclaration( NULL ),
mGlobalNumberOfInstances( 1 ),
mRenderDocApi( 0 ),
mVertexProgramBound( false ),
mGeometryProgramBound( false ),
mFragmentProgramBound( false ),
mTessellationHullProgramBound( false ),
mTessellationDomainProgramBound( false ),
mComputeProgramBound( false ),
mClipPlanesDirty( true ),
mRealCapabilities( 0 ),
mCurrentCapabilities( 0 ),
mUseCustomCapabilities( false ),
mNativeShadingLanguageVersion( 0 ),
mTexProjRelative( false ),
mTexProjRelativeOrigin( Vector3::ZERO ),
mReverseDepth( true ),
mInvertedClipSpaceY( false )
{
mEventNames.push_back( "RenderSystemCapabilitiesCreated" );
}
//-----------------------------------------------------------------------
RenderSystem::~RenderSystem()
{
shutdown();
OGRE_DELETE mRealCapabilities;
mRealCapabilities = 0;
// Current capabilities managed externally
mCurrentCapabilities = 0;
}
//-----------------------------------------------------------------------
Window *RenderSystem::_initialise( bool autoCreateWindow, const String &windowTitle )
{
// Have I been registered by call to Root::setRenderSystem?
/** Don't do this anymore, just allow via Root
RenderSystem* regPtr = Root::getSingleton().getRenderSystem();
if (!regPtr || regPtr != this)
// Register self - library user has come to me direct
Root::getSingleton().setRenderSystem(this);
*/
// Subclasses should take it from here
// They should ALL call this superclass method from
// their own initialise() implementations.
mVertexProgramBound = false;
mGeometryProgramBound = false;
mFragmentProgramBound = false;
mTessellationHullProgramBound = false;
mTessellationDomainProgramBound = false;
mComputeProgramBound = false;
return 0;
}
//---------------------------------------------------------------------------------------------
void RenderSystem::useCustomRenderSystemCapabilities( RenderSystemCapabilities *capabilities )
{
if( mRealCapabilities != 0 )
{
OGRE_EXCEPT(
Exception::ERR_INTERNAL_ERROR,
"Custom render capabilities must be set before the RenderSystem is initialised.",
"RenderSystem::useCustomRenderSystemCapabilities" );
}
mCurrentCapabilities = capabilities;
mUseCustomCapabilities = true;
}
//---------------------------------------------------------------------------------------------
bool RenderSystem::_createRenderWindows( const RenderWindowDescriptionList &renderWindowDescriptions,
WindowList &createdWindows )
{
unsigned int fullscreenWindowsCount = 0;
// Grab some information and avoid duplicate render windows.
for( unsigned int nWindow = 0; nWindow < renderWindowDescriptions.size(); ++nWindow )
{
const RenderWindowDescription *curDesc = &renderWindowDescriptions[nWindow];
// Count full screen windows.
if( curDesc->useFullScreen )
fullscreenWindowsCount++;
bool renderWindowFound = false;
for( unsigned int nSecWindow = nWindow + 1; nSecWindow < renderWindowDescriptions.size();
++nSecWindow )
{
if( curDesc->name == renderWindowDescriptions[nSecWindow].name )
{
renderWindowFound = true;
break;
}
}
// Make sure we don't already have a render target of the
// same name as the one supplied
if( renderWindowFound )
{
String msg;
msg = "A render target of the same name '" + String( curDesc->name ) +
"' already "
"exists. You cannot create a new window with this name.";
OGRE_EXCEPT( Exception::ERR_INTERNAL_ERROR, msg, "RenderSystem::createRenderWindow" );
}
}
// Case we have to create some full screen rendering windows.
if( fullscreenWindowsCount > 0 )
{
// Can not mix full screen and windowed rendering windows.
if( fullscreenWindowsCount != renderWindowDescriptions.size() )
{
OGRE_EXCEPT( Exception::ERR_INVALIDPARAMS,
"Can not create mix of full screen and windowed rendering windows",
"RenderSystem::createRenderWindows" );
}
}
return true;
}
//---------------------------------------------------------------------------------------------
void RenderSystem::destroyRenderWindow( Window *window )
{
WindowSet::iterator itor = mWindows.find( window );
if( itor == mWindows.end() )
{
OGRE_EXCEPT( Exception::ERR_ITEM_NOT_FOUND,
"Window does not belong to us or is already deleted!",
"RenderSystem::destroyRenderWindow" );
}
mWindows.erase( window );
OGRE_DELETE window;
}
//-----------------------------------------------------------------------
void RenderSystem::_setPipelineStateObject( const HlmsPso *pso )
{
assert( ( !pso || pso->rsData ) &&
"The PipelineStateObject must have been created via "
"RenderSystem::_hlmsPipelineStateObjectCreated!" );
// Disable previous state
mActiveVertexGpuProgramParameters.reset();
mActiveGeometryGpuProgramParameters.reset();
mActiveTessellationHullGpuProgramParameters.reset();
mActiveTessellationDomainGpuProgramParameters.reset();
mActiveFragmentGpuProgramParameters.reset();
mActiveComputeGpuProgramParameters.reset();
if( mVertexProgramBound && !mClipPlanes.empty() )
mClipPlanesDirty = true;
mVertexProgramBound = false;
mGeometryProgramBound = false;
mFragmentProgramBound = false;
mTessellationHullProgramBound = false;
mTessellationDomainProgramBound = false;
mComputeProgramBound = false;
// Derived class must set new state
}
//-----------------------------------------------------------------------
void RenderSystem::_setTextureUnitSettings( size_t texUnit, TextureUnitState &tl )
{
// This method is only ever called to set a texture unit to valid details
// The method _disableTextureUnit is called to turn a unit off
TextureGpu *tex = tl._getTexturePtr();
bool isValidBinding = false;
if( mCurrentCapabilities->hasCapability( RSC_COMPLETE_TEXTURE_BINDING ) )
_setBindingType( tl.getBindingType() );
// Vertex texture binding?
if( mCurrentCapabilities->hasCapability( RSC_VERTEX_TEXTURE_FETCH ) &&
!mCurrentCapabilities->getVertexTextureUnitsShared() )
{
isValidBinding = true;
if( tl.getBindingType() == TextureUnitState::BT_VERTEX )
{
// Bind vertex texture
_setVertexTexture( texUnit, tex );
// bind nothing to fragment unit (hardware isn't shared but fragment
// unit can't be using the same index
_setTexture( texUnit, 0, false );
}
else
{
// vice versa
_setVertexTexture( texUnit, 0 );
_setTexture( texUnit, tex,
mCurrentRenderPassDescriptor->mDepth.texture &&
mCurrentRenderPassDescriptor->mDepth.texture == tex );
}
}
if( mCurrentCapabilities->hasCapability( RSC_GEOMETRY_PROGRAM ) )
{
isValidBinding = true;
if( tl.getBindingType() == TextureUnitState::BT_GEOMETRY )
{
// Bind vertex texture
_setGeometryTexture( texUnit, tex );
// bind nothing to fragment unit (hardware isn't shared but fragment
// unit can't be using the same index
_setTexture( texUnit, 0, false );
}
else
{
// vice versa
_setGeometryTexture( texUnit, 0 );
_setTexture( texUnit, tex,
mCurrentRenderPassDescriptor->mDepth.texture &&
mCurrentRenderPassDescriptor->mDepth.texture == tex );
}
}
if( mCurrentCapabilities->hasCapability( RSC_TESSELLATION_DOMAIN_PROGRAM ) )
{
isValidBinding = true;
if( tl.getBindingType() == TextureUnitState::BT_TESSELLATION_DOMAIN )
{
// Bind vertex texture
_setTessellationDomainTexture( texUnit, tex );
// bind nothing to fragment unit (hardware isn't shared but fragment
// unit can't be using the same index
_setTexture( texUnit, 0, false );
}
else
{
// vice versa
_setTessellationDomainTexture( texUnit, 0 );
_setTexture( texUnit, tex,
mCurrentRenderPassDescriptor->mDepth.texture &&
mCurrentRenderPassDescriptor->mDepth.texture == tex );
}
}
if( mCurrentCapabilities->hasCapability( RSC_TESSELLATION_HULL_PROGRAM ) )
{
isValidBinding = true;
if( tl.getBindingType() == TextureUnitState::BT_TESSELLATION_HULL )
{
// Bind vertex texture
_setTessellationHullTexture( texUnit, tex );
// bind nothing to fragment unit (hardware isn't shared but fragment
// unit can't be using the same index
_setTexture( texUnit, 0, false );
}
else
{
// vice versa
_setTessellationHullTexture( texUnit, 0 );
_setTexture( texUnit, tex,
mCurrentRenderPassDescriptor->mDepth.texture &&
mCurrentRenderPassDescriptor->mDepth.texture == tex );
}
}
if( !isValidBinding )
{
// Shared vertex / fragment textures or no vertex texture support
// Bind texture (may be blank)
_setTexture( texUnit, tex,
mCurrentRenderPassDescriptor->mDepth.texture &&
mCurrentRenderPassDescriptor->mDepth.texture == tex );
}
_setHlmsSamplerblock( (uint8)texUnit, tl.getSamplerblock() );
// Set blend modes
// Note, colour before alpha is important
_setTextureBlendMode( texUnit, tl.getColourBlendMode() );
_setTextureBlendMode( texUnit, tl.getAlphaBlendMode() );
// Set texture effects
TextureUnitState::EffectMap::iterator effi;
// Iterate over new effects
bool anyCalcs = false;
for( effi = tl.mEffects.begin(); effi != tl.mEffects.end(); ++effi )
{
switch( effi->second.type )
{
case TextureUnitState::ET_ENVIRONMENT_MAP:
if( effi->second.subtype == TextureUnitState::ENV_CURVED )
{
_setTextureCoordCalculation( texUnit, TEXCALC_ENVIRONMENT_MAP );
anyCalcs = true;
}
else if( effi->second.subtype == TextureUnitState::ENV_PLANAR )
{
_setTextureCoordCalculation( texUnit, TEXCALC_ENVIRONMENT_MAP_PLANAR );
anyCalcs = true;
}
else if( effi->second.subtype == TextureUnitState::ENV_REFLECTION )
{
_setTextureCoordCalculation( texUnit, TEXCALC_ENVIRONMENT_MAP_REFLECTION );
anyCalcs = true;
}
else if( effi->second.subtype == TextureUnitState::ENV_NORMAL )
{
_setTextureCoordCalculation( texUnit, TEXCALC_ENVIRONMENT_MAP_NORMAL );
anyCalcs = true;
}
break;
case TextureUnitState::ET_UVSCROLL:
case TextureUnitState::ET_USCROLL:
case TextureUnitState::ET_VSCROLL:
case TextureUnitState::ET_ROTATE:
case TextureUnitState::ET_TRANSFORM:
break;
case TextureUnitState::ET_PROJECTIVE_TEXTURE:
_setTextureCoordCalculation( texUnit, TEXCALC_PROJECTIVE_TEXTURE, effi->second.frustum );
anyCalcs = true;
break;
}
}
// Ensure any previous texcoord calc settings are reset if there are now none
if( !anyCalcs )
{
_setTextureCoordCalculation( texUnit, TEXCALC_NONE );
}
// Change tetxure matrix
_setTextureMatrix( texUnit, tl.getTextureTransform() );
}
//-----------------------------------------------------------------------
void RenderSystem::_setBindingType( TextureUnitState::BindingType bindingType )
{
OGRE_EXCEPT( Exception::ERR_NOT_IMPLEMENTED,
"This rendersystem does not support binding texture to other shaders then fragment",
"RenderSystem::_setBindingType" );
}
//-----------------------------------------------------------------------
void RenderSystem::_setVertexTexture( size_t unit, TextureGpu *tex )
{
OGRE_EXCEPT( Exception::ERR_NOT_IMPLEMENTED,
"This rendersystem does not support separate vertex texture samplers, "
"you should use the regular texture samplers which are shared between "
"the vertex and fragment units.",
"RenderSystem::_setVertexTexture" );
}
//-----------------------------------------------------------------------
void RenderSystem::_setGeometryTexture( size_t unit, TextureGpu *tex )
{
OGRE_EXCEPT( Exception::ERR_NOT_IMPLEMENTED,
"This rendersystem does not support separate geometry texture samplers, "
"you should use the regular texture samplers which are shared between "
"the vertex and fragment units.",
"RenderSystem::_setGeometryTexture" );
}
//-----------------------------------------------------------------------
void RenderSystem::_setTessellationHullTexture( size_t unit, TextureGpu *tex )
{
OGRE_EXCEPT( Exception::ERR_NOT_IMPLEMENTED,
"This rendersystem does not support separate tessellation hull texture samplers, "
"you should use the regular texture samplers which are shared between "
"the vertex and fragment units.",
"RenderSystem::_setTessellationHullTexture" );
}
//-----------------------------------------------------------------------
void RenderSystem::_setTessellationDomainTexture( size_t unit, TextureGpu *tex )
{
OGRE_EXCEPT( Exception::ERR_NOT_IMPLEMENTED,
"This rendersystem does not support separate tessellation domain texture samplers, "
"you should use the regular texture samplers which are shared between "
"the vertex and fragment units.",
"RenderSystem::_setTessellationDomainTexture" );
}
//-----------------------------------------------------------------------
void RenderSystem::destroyRenderPassDescriptor( RenderPassDescriptor *renderPassDesc )
{
RenderPassDescriptorSet::iterator itor = mRenderPassDescs.find( renderPassDesc );
assert( itor != mRenderPassDescs.end() && "Already destroyed?" );
if( itor != mRenderPassDescs.end() )
mRenderPassDescs.erase( itor );
if( renderPassDesc->mDepth.texture )
{
_dereferenceSharedDepthBuffer( renderPassDesc->mDepth.texture );
if( renderPassDesc->mStencil.texture &&
renderPassDesc->mStencil.texture == renderPassDesc->mDepth.texture )
{
_dereferenceSharedDepthBuffer( renderPassDesc->mStencil.texture );
renderPassDesc->mStencil.texture = 0;
}
}
if( renderPassDesc->mStencil.texture )
{
_dereferenceSharedDepthBuffer( renderPassDesc->mStencil.texture );
renderPassDesc->mStencil.texture = 0;
}
delete renderPassDesc;
}
//---------------------------------------------------------------------
void RenderSystem::destroyAllRenderPassDescriptors()
{
RenderPassDescriptorSet::const_iterator itor = mRenderPassDescs.begin();
RenderPassDescriptorSet::const_iterator endt = mRenderPassDescs.end();
while( itor != endt )
delete *itor++;
mRenderPassDescs.clear();
}
//---------------------------------------------------------------------
void RenderSystem::beginRenderPassDescriptor( RenderPassDescriptor *desc, TextureGpu *anyTarget,
uint8 mipLevel, const Vector4 *viewportSizes,
const Vector4 *scissors, uint32 numViewports,
bool overlaysEnabled, bool warnIfRtvWasFlushed )
{
assert( anyTarget );
mCurrentRenderPassDescriptor = desc;
for( size_t i = 0; i < numViewports; ++i )
{
mCurrentRenderViewport[i].setDimensions( anyTarget, viewportSizes[i], scissors[i],
mipLevel );
mCurrentRenderViewport[i].setOverlaysEnabled( overlaysEnabled );
}
mMaxBoundViewports = numViewports;
}
//---------------------------------------------------------------------
void RenderSystem::executeRenderPassDescriptorDelayedActions() {}
//---------------------------------------------------------------------
void RenderSystem::endRenderPassDescriptor()
{
mCurrentRenderPassDescriptor = 0;
const size_t maxBoundViewports = mMaxBoundViewports;
for( size_t i = 0; i < maxBoundViewports; ++i )
mCurrentRenderViewport[i].setDimensions( 0, Vector4::ZERO, Vector4::ZERO, 0u );
mMaxBoundViewports = 1u;
// Where graphics ends, compute may start, or a new frame.
// Very likely we'll have to flush the UAVs again, so assume we need.
mUavRenderingDirty = true;
}
//---------------------------------------------------------------------
void RenderSystem::destroySharedDepthBuffer( TextureGpu *depthBuffer )
{
TextureGpuVec &bufferVec = mDepthBufferPool2[depthBuffer->getDepthBufferPoolId()];
TextureGpuVec::iterator itor = std::find( bufferVec.begin(), bufferVec.end(), depthBuffer );
if( itor != bufferVec.end() )
{
efficientVectorRemove( bufferVec, itor );
mTextureGpuManager->destroyTexture( depthBuffer );
}
}
//---------------------------------------------------------------------
void RenderSystem::_cleanupDepthBuffers()
{
TextureGpuSet::const_iterator itor = mSharedDepthBufferZeroRefCandidates.begin();
TextureGpuSet::const_iterator endt = mSharedDepthBufferZeroRefCandidates.end();
while( itor != endt )
{
// When a shared depth buffer ends up in mSharedDepthBufferZeroRefCandidates,
// it's because its ref. count reached 0. However it may have been reacquired.
// We need to check its reference count is still 0 before deleting it.
DepthBufferRefMap::iterator itMap = mSharedDepthBufferRefs.find( *itor );
if( itMap != mSharedDepthBufferRefs.end() && itMap->second == 0u )
{
destroySharedDepthBuffer( *itor );
mSharedDepthBufferRefs.erase( itMap );
}
++itor;
}
mSharedDepthBufferZeroRefCandidates.clear();
}
//---------------------------------------------------------------------
void RenderSystem::referenceSharedDepthBuffer( TextureGpu *depthBuffer )
{
OGRE_ASSERT_MEDIUM( depthBuffer->getSourceType() == TextureSourceType::SharedDepthBuffer );
OGRE_ASSERT_MEDIUM( mSharedDepthBufferRefs.find( depthBuffer ) != mSharedDepthBufferRefs.end() );
++mSharedDepthBufferRefs[depthBuffer];
}
//---------------------------------------------------------------------
void RenderSystem::_dereferenceSharedDepthBuffer( TextureGpu *depthBuffer )
{
if( !depthBuffer )
return;
DepthBufferRefMap::iterator itor = mSharedDepthBufferRefs.find( depthBuffer );
if( itor != mSharedDepthBufferRefs.end() )
{
OGRE_ASSERT_MEDIUM( depthBuffer->getSourceType() == TextureSourceType::SharedDepthBuffer );
OGRE_ASSERT_LOW( itor->second > 0u && "Releasing a shared depth buffer too much" );
--itor->second;
if( itor->second == 0u )
mSharedDepthBufferZeroRefCandidates.insert( depthBuffer );
}
else
{
// This is not a shared depth buffer (e.g. one created by the user)
OGRE_ASSERT_MEDIUM( depthBuffer->getSourceType() != TextureSourceType::SharedDepthBuffer );
}
}
//-----------------------------------------------------------------------
void RenderSystem::debugLogPso( const HlmsPso *pso )
{
char tmpBuffer[256];
LwString msg( LwString::FromEmptyPointer( tmpBuffer, sizeof( tmpBuffer ) ) );
msg.a( "Creating PSO with" );
if( pso->vertexShader )
msg.a( " ", pso->vertexShader->getName().c_str() );
if( pso->geometryShader )
msg.a( " ", pso->geometryShader->getName().c_str() );
if( pso->tesselationHullShader )
msg.a( " ", pso->tesselationHullShader->getName().c_str() );
if( pso->tesselationDomainShader )
msg.a( " ", pso->tesselationDomainShader->getName().c_str() );
if( pso->pixelShader )
msg.a( " ", pso->pixelShader->getName().c_str() );
LogManager::getSingleton().logMessage( msg.c_str(), LML_TRIVIAL );
}
//---------------------------------------------------------------------
void RenderSystem::debugLogPso( const HlmsComputePso *pso )
{
char tmpBuffer[256];
LwString msg( LwString::FromEmptyPointer( tmpBuffer, sizeof( tmpBuffer ) ) );
msg.a( "Creating Compute PSO with" );
if( pso->computeShader )
msg.a( " ", pso->computeShader->getName().c_str() );
msg.a( " thPerGroup [", pso->mThreadsPerGroup[0], ", ", pso->mThreadsPerGroup[1], ", ",
pso->mThreadsPerGroup[2], "]" );
msg.a( " numThrGroups [", pso->mNumThreadGroups[0], ", ", pso->mNumThreadGroups[1], ", ",
pso->mNumThreadGroups[2], "]" );
LogManager::getSingleton().logMessage( msg.c_str(), LML_TRIVIAL );
}
//---------------------------------------------------------------------
void RenderSystem::selectDepthBufferFormat( const uint8 supportedFormats )
{
if( ( DepthBuffer::AvailableDepthFormats & DepthBuffer::DFM_D32 ) &&
( supportedFormats & DepthBuffer::DFM_D32 ) )
{
if( DepthBuffer::AvailableDepthFormats & DepthBuffer::DFM_S8 )
DepthBuffer::DefaultDepthBufferFormat = PFG_D32_FLOAT_S8X24_UINT;
else
DepthBuffer::DefaultDepthBufferFormat = PFG_D32_FLOAT;
}
else if( DepthBuffer::AvailableDepthFormats & ( DepthBuffer::DFM_D32 | DepthBuffer::DFM_D24 ) &&
( supportedFormats & DepthBuffer::DFM_D24 ) )
{
if( DepthBuffer::AvailableDepthFormats & DepthBuffer::DFM_S8 )
DepthBuffer::DefaultDepthBufferFormat = PFG_D24_UNORM_S8_UINT;
else
DepthBuffer::DefaultDepthBufferFormat = PFG_D24_UNORM;
}
else if( DepthBuffer::AvailableDepthFormats &
( DepthBuffer::DFM_D32 | DepthBuffer::DFM_D24 | DepthBuffer::DFM_D16 ) &&
( supportedFormats & DepthBuffer::DFM_D16 ) )
{
DepthBuffer::DefaultDepthBufferFormat = PFG_D16_UNORM;
}
else
DepthBuffer::DefaultDepthBufferFormat = PFG_NULL;
}
//---------------------------------------------------------------------
TextureGpu *RenderSystem::createDepthBufferFor( TextureGpu *colourTexture, bool preferDepthTexture,
PixelFormatGpu depthBufferFormat, uint16 poolId )
{
uint32 textureFlags = TextureFlags::RenderToTexture;
if( !preferDepthTexture )
textureFlags |= TextureFlags::NotTexture | TextureFlags::DiscardableContent;
char tmpBuffer[64];
LwString depthBufferName( LwString::FromEmptyPointer( tmpBuffer, sizeof( tmpBuffer ) ) );
depthBufferName.a( "DepthBuffer_", Id::generateNewId<TextureGpu>() );
TextureGpu *retVal = mTextureGpuManager->createTexture(
depthBufferName.c_str(), GpuPageOutStrategy::Discard, textureFlags, TextureTypes::Type2D );
retVal->setResolution( colourTexture->getInternalWidth(), colourTexture->getInternalHeight() );
retVal->setPixelFormat( depthBufferFormat );
retVal->_setDepthBufferDefaults( poolId, preferDepthTexture, depthBufferFormat );
retVal->_setSourceType( TextureSourceType::SharedDepthBuffer );
retVal->setSampleDescription( colourTexture->getRequestedSampleDescription() );
retVal->_transitionTo( GpuResidency::Resident, (uint8 *)0 );
// Start reference count on the depth buffer here
mSharedDepthBufferRefs[retVal] = 1u;
return retVal;
}
//---------------------------------------------------------------------
TextureGpu *RenderSystem::getDepthBufferFor( TextureGpu *colourTexture, uint16 poolId,
bool preferDepthTexture,
PixelFormatGpu depthBufferFormat )
{
if( poolId == DepthBuffer::POOL_NO_DEPTH || depthBufferFormat == PFG_NULL )
return 0; // RenderTarget explicitly requested no depth buffer
if( colourTexture->isRenderWindowSpecific() )
{
Window *window;
colourTexture->getCustomAttribute( "Window", &window );
return window->getDepthBuffer();
}
if( poolId == DepthBuffer::NO_POOL_EXPLICIT_RTV )
{
TextureGpu *retVal =
createDepthBufferFor( colourTexture, preferDepthTexture, depthBufferFormat, poolId );
return retVal;
}
// Find a depth buffer in the pool
TextureGpuVec::const_iterator itor = mDepthBufferPool2[poolId].begin();
TextureGpuVec::const_iterator endt = mDepthBufferPool2[poolId].end();
TextureGpu *retVal = 0;
while( itor != endt && !retVal )
{
if( preferDepthTexture == ( *itor )->isTexture() &&
( depthBufferFormat == PFG_UNKNOWN ||
depthBufferFormat == ( *itor )->getPixelFormat() ) &&
( *itor )->supportsAsDepthBufferFor( colourTexture ) )
{
retVal = *itor;
referenceSharedDepthBuffer( retVal );
}
else
{
retVal = 0;
}
++itor;
}
// Not found yet? Create a new one!
if( !retVal )
{
retVal =
createDepthBufferFor( colourTexture, preferDepthTexture, depthBufferFormat, poolId );
mDepthBufferPool2[poolId].push_back( retVal );
if( !retVal )
{
LogManager::getSingleton().logMessage(
"WARNING: Couldn't create a suited "
"DepthBuffer for RTT: " +
colourTexture->getNameStr(),
LML_CRITICAL );
}
}
return retVal;
}
//---------------------------------------------------------------------
void RenderSystem::setUavStartingSlot( uint32 startingSlot )
{
mUavStartingSlot = startingSlot;
mUavRenderingDirty = true;
}
//---------------------------------------------------------------------
void RenderSystem::queueBindUAVs( const DescriptorSetUav *descSetUav )
{
if( mUavRenderingDescSet != descSetUav )
{
mUavRenderingDescSet = descSetUav;
mUavRenderingDirty = true;
}
}
//-----------------------------------------------------------------------
BoundUav RenderSystem::getBoundUav( size_t slot ) const
{
BoundUav retVal;
memset( &retVal, 0, sizeof( retVal ) );
if( mUavRenderingDescSet )
{
if( slot < mUavRenderingDescSet->mUavs.size() )
{
if( mUavRenderingDescSet->mUavs[slot].isTexture() )
{
retVal.rttOrBuffer = mUavRenderingDescSet->mUavs[slot].getTexture().texture;
retVal.boundAccess = mUavRenderingDescSet->mUavs[slot].getTexture().access;
}
else
{
retVal.rttOrBuffer = mUavRenderingDescSet->mUavs[slot].getBuffer().buffer;
retVal.boundAccess = mUavRenderingDescSet->mUavs[slot].getBuffer().access;
}
}
}
return retVal;
}
//-----------------------------------------------------------------------
void RenderSystem::_beginFrameOnce()
{
_resetMetrics();
mVaoManager->_beginFrame();
}
//-----------------------------------------------------------------------
void RenderSystem::_endFrameOnce() { queueBindUAVs( 0 ); }
//-----------------------------------------------------------------------
bool RenderSystem::getWBufferEnabled() const { return mWBuffer; }
//-----------------------------------------------------------------------
void RenderSystem::setWBufferEnabled( bool enabled ) { mWBuffer = enabled; }
//-----------------------------------------------------------------------
SampleDescription RenderSystem::validateSampleDescription( const SampleDescription &sampleDesc,
PixelFormatGpu format )
{
SampleDescription retVal( sampleDesc.getMaxSamples(), sampleDesc.getMsaaPattern() );
return retVal;
}
//-----------------------------------------------------------------------
void RenderSystem::shutdown()
{
// Remove occlusion queries
for( HardwareOcclusionQueryList::iterator i = mHwOcclusionQueries.begin();
i != mHwOcclusionQueries.end(); ++i )
{
OGRE_DELETE *i;
}
mHwOcclusionQueries.clear();
destroyAllRenderPassDescriptors();
_cleanupDepthBuffers();
OGRE_ASSERT_LOW( mSharedDepthBufferRefs.empty() &&
"destroyAllRenderPassDescriptors followed by _cleanupDepthBuffers should've "
"emptied mSharedDepthBufferRefs. Please report this bug to "
"https://github.com/OGRECave/ogre-next/issues/" );
OGRE_DELETE mTextureGpuManager;
mTextureGpuManager = 0;
OGRE_DELETE mVaoManager;
mVaoManager = 0;
{
// Remove all windows.
// (destroy primary window last since others may depend on it)
Window *primary = 0;
WindowSet::const_iterator itor = mWindows.begin();
WindowSet::const_iterator endt = mWindows.end();
while( itor != endt )
{
// Set mTextureManager to 0 as it is no longer valid on shutdown
if( ( *itor )->getTexture() )
( *itor )->getTexture()->_resetTextureManager();
if( ( *itor )->getDepthBuffer() )
( *itor )->getDepthBuffer()->_resetTextureManager();
if( ( *itor )->getStencilBuffer() )
( *itor )->getStencilBuffer()->_resetTextureManager();
if( !primary && ( *itor )->isPrimary() )
primary = *itor;
else
OGRE_DELETE *itor;
++itor;
}
OGRE_DELETE primary;
mWindows.clear();
}
}
//-----------------------------------------------------------------------
void RenderSystem::_resetMetrics()
{
const bool oldValue = mMetrics.mIsRecordingMetrics;
mMetrics = RenderingMetrics();
mMetrics.mIsRecordingMetrics = oldValue;
}
//-----------------------------------------------------------------------
void RenderSystem::_addMetrics( const RenderingMetrics &newMetrics )
{
if( mMetrics.mIsRecordingMetrics )
{
mMetrics.mBatchCount += newMetrics.mBatchCount;
mMetrics.mFaceCount += newMetrics.mFaceCount;
mMetrics.mVertexCount += newMetrics.mVertexCount;
mMetrics.mDrawCount += newMetrics.mDrawCount;
mMetrics.mInstanceCount += newMetrics.mInstanceCount;
}
}
//-----------------------------------------------------------------------
void RenderSystem::setMetricsRecordingEnabled( bool bEnable )
{
mMetrics.mIsRecordingMetrics = bEnable;
}
//-----------------------------------------------------------------------
const RenderingMetrics &RenderSystem::getMetrics() const { return mMetrics; }
//-----------------------------------------------------------------------
void RenderSystem::convertColourValue( const ColourValue &colour, uint32 *pDest )
{
*pDest = v1::VertexElement::convertColourValue( colour, getColourVertexElementType() );
}
//-----------------------------------------------------------------------
CompareFunction RenderSystem::reverseCompareFunction( CompareFunction depthFunc )
{
switch( depthFunc )
{
case CMPF_LESS:
return CMPF_GREATER;
case CMPF_LESS_EQUAL:
return CMPF_GREATER_EQUAL;
case CMPF_GREATER_EQUAL:
return CMPF_LESS_EQUAL;
case CMPF_GREATER:
return CMPF_LESS;
default:
return depthFunc;
}
return depthFunc;
}
//-----------------------------------------------------------------------
void RenderSystem::_makeRsProjectionMatrix( const Matrix4 &matrix, Matrix4 &dest, Real nearPlane,
Real farPlane, ProjectionType projectionType )
{
dest = matrix;
Real inv_d = 1 / ( farPlane - nearPlane );
Real q, qn;
if( mReverseDepth )
{
if( projectionType == PT_PERSPECTIVE )
{
if( farPlane == 0 )
{
// Infinite far plane
// q = limit( near / (far - near), far, inf );
// qn = limit( (far * near) / (far - near), far, inf );
q = 0;
qn = nearPlane;
}
else
{
// Standard Z for range [-1; 1]
// q = - (far + near) / (far - near)
// qn = - 2 * (far * near) / (far - near)
//
// Standard Z for range [0; 1]
// q = - far / (far - near)
// qn = - (far * near) / (far - near)
//
// Reverse Z for range [1; 0]:
// [ 1 0 0 0 ] [ A 0 C 0 ]
// [ 0 1 0 0 ] X [ 0 B D 0 ]
// [ 0 0 -1 1 ] [ 0 0 q qn ]
// [ 0 0 0 1 ] [ 0 0 -1 0 ]
//
// [ A 0 C 0 ]
// [ 0 B D 0 ]
// [ 0 0 -q-1 -qn ]
// [ 0 0 -1 0 ]
//
// q' = -q - 1
// = far / (far - near) - 1
// = ( far - (far - near) ) / (far - near)
// q' = near / (far - near)
// qn'= -qn
q = nearPlane * inv_d;
qn = ( farPlane * nearPlane ) * inv_d;
}
}
else
{
if( farPlane == 0 )
{
// Can not do infinite far plane here, avoid divided zero only
q = Frustum::INFINITE_FAR_PLANE_ADJUST / nearPlane;
qn = Frustum::INFINITE_FAR_PLANE_ADJUST + 1;
}
else
{
// Standard Z for range [-1; 1]
// q = - 2 / (far - near)
// qn = -(far + near) / (far - near)
//
// Standard Z for range [0; 1]
// q = - 1 / (far - near)
// qn = - near / (far - near)
//
// Reverse Z for range [1; 0]:
// q' = 1 / (far - near)
// qn'= far / (far - near)
q = inv_d;
qn = farPlane * inv_d;
}
}
}
else
{
if( projectionType == PT_PERSPECTIVE )
{