// Attempts to position unplaced rectangles from the layout into this row.
int TextureLayoutRow::Generate(TextureLayout& layout, int max_width, int y)
{
int placed_rectangles = 0;
while(!layout.unplaced_rectangles.empty())
{
TextureLayoutRectangle* rectangle = layout.unplaced_rectangles.front();
if (placed_width + rectangle->GetDimensions().x + 1 > max_width)
break;
// Increment the row height if necessary.
height = Math::Max(height, rectangle->GetDimensions().y);
// Add this glyph onto our list and mark it as placed.
rectangles.push_back(rectangle);
if (layout.has_generated)
rectangle->Place(layout.GetNumTextures()-1, Vector2i(placed_width, y));
else
rectangle->Place(layout.GetNumTextures(), Vector2i(placed_width, y));
++placed_rectangles;
// Increment our width. An extra pixel is added on so the rectangles aren't pushed up
// against each other. This will avoid filtering artifacts.
if (rectangle->GetDimensions().x > 0)
placed_width += rectangle->GetDimensions().x + 1;
layout.rectangles.push_back(rectangle);
layout.unplaced_rectangles.pop();
}
return placed_rectangles;
}
void
TextureCompositorMultiTexture::applyLayerUpdate(osg::StateSet* stateSet,
UID layerUID,
const GeoImage& preparedImage,
const TileKey& tileKey,
const TextureLayout& layout,
osg::StateSet* parentStateSet) const
{
osg::Texture2D* tex = s_getTexture( stateSet, layerUID, layout, parentStateSet, _minFilter, _magFilter);
if ( tex )
{
osg::Image* image = preparedImage.getImage();
image->dirty(); // required for ensure the texture recognizes the image as new data
tex->setImage( image );
// set up proper mipmapping filters:
if (_enableMipmapping &&
_enableMipmappingOnUpdatedTextures &&
ImageUtils::isPowerOfTwo( image ) &&
!(!image->isMipmap() && ImageUtils::isCompressed(image)) )
{
if ( tex->getFilter(osg::Texture::MIN_FILTER) != _minFilter )
tex->setFilter( osg::Texture::MIN_FILTER, _minFilter );
}
else if ( tex->getFilter(osg::Texture::MIN_FILTER) != osg::Texture::LINEAR )
{
tex->setFilter( osg::Texture::MIN_FILTER, osg::Texture::LINEAR );
}
bool lodBlending = layout.getSlot(layerUID, 1) >= 0;
if (_enableMipmapping &&
_enableMipmappingOnUpdatedTextures &&
lodBlending )
{
int slot = layout.getSlot(layerUID, 0);
// update the timestamp on the image layer to support blending.
float now = (float)osg::Timer::instance()->delta_s( osg::Timer::instance()->getStartTick(), osg::Timer::instance()->tick() );
ArrayUniform stampUniform( "osgearth_SlotStamp", osg::Uniform::FLOAT, stateSet, layout.getMaxUsedSlot() + 1 );
stampUniform.setElement( slot, now );
// set the texture matrix to properly position the blend (parent) texture
osg::Matrix mat;
if ( parentStateSet != 0L )
{
unsigned tileX, tileY;
tileKey.getTileXY(tileX, tileY);
mat(0,0) = 0.5f;
mat(1,1) = 0.5f;
mat(3,0) = (float)(tileX % 2) * 0.5f;
mat(3,1) = (float)(1 - tileY % 2) * 0.5f;
}
ArrayUniform texMatUniform( "osgearth_TexBlendMatrix", osg::Uniform::FLOAT_MAT4, stateSet, layout.getMaxUsedSlot() + 1 );
texMatUniform.setElement( slot, mat );
}
}
}
void RenderColourLayerToTexture::doRender( Position const & p_position
, Size const & p_size
, TextureLayout const & p_texture
, RenderPipeline & p_pipeline
, MatrixUbo & p_matrixUbo
, GeometryBuffers const & p_geometryBuffers
, uint32_t p_layer )
{
REQUIRE( p_texture.getLayersCount() > p_layer );
m_viewport.setPosition( p_position );
m_viewport.resize( p_size );
m_viewport.update();
m_viewport.apply();
REQUIRE( m_layerIndexUniform );
m_layerIndexUniform->setValue( p_layer );
p_matrixUbo.update( m_viewport.getProjection() );
p_pipeline.apply();
m_layerIndexUniform->update();
p_texture.bind( MinTextureIndex );
m_sampler->bind( MinTextureIndex );
p_geometryBuffers.draw( uint32_t( m_arrayVertex.size() ), 0u );
m_sampler->unbind( MinTextureIndex );
p_texture.unbind( MinTextureIndex );
}
// Attempts to position unplaced rectangles from the layout into this row.
int TextureLayoutRow::Generate(TextureLayout& layout, int max_width, int y)
{
int width = 1;
int first_unplaced_index = 0;
int placed_rectangles = 0;
while (width < max_width)
{
// Find the first unplaced rectangle we can fit.
int index;
for (index = first_unplaced_index; index < layout.GetNumRectangles(); ++index)
{
TextureLayoutRectangle& rectangle = layout.GetRectangle(index);
if (!rectangle.IsPlaced())
{
if (width + rectangle.GetDimensions().x + 1 <= max_width)
break;
}
}
if (index == layout.GetNumRectangles())
return placed_rectangles;
TextureLayoutRectangle& rectangle = layout.GetRectangle(index);
// Increment the row height if necessary.
height = Math::Max(height, rectangle.GetDimensions().y);
// Add this glyph onto our list and mark it as placed.
rectangles.push_back(&rectangle);
rectangle.Place(layout.GetNumTextures(), Vector2i(width, y));
++placed_rectangles;
// Increment our width. An extra pixel is added on so the rectangles aren't pushed up
// against each other. This will avoid filtering artifacts.
if (rectangle.GetDimensions().x > 0)
width += rectangle.GetDimensions().x + 1;
first_unplaced_index = index + 1;
}
return placed_rectangles;
}
void
TextureCompositorMultiTexture::updateMasterStateSet(osg::StateSet* stateSet,
const TextureLayout& layout ) const
{
int numSlots = layout.getMaxUsedSlot() + 1;
int maxUnits = numSlots;
if ( _useGPU )
{
// Validate against the max number of GPU texture units:
if ( maxUnits > Registry::instance()->getCapabilities().getMaxGPUTextureUnits() )
{
maxUnits = Registry::instance()->getCapabilities().getMaxGPUTextureUnits();
OE_WARN << LC
<< "Warning! You have exceeded the number of texture units available on your GPU ("
<< maxUnits << "). Consider using another compositing mode."
<< std::endl;
}
VirtualProgram* vp = static_cast<VirtualProgram*>( stateSet->getAttribute(VirtualProgram::SA_TYPE) );
// see if we have any blended layers:
bool hasBlending = layout.containsSecondarySlots( maxUnits );
// Why are these marked as PROTECTED? See the comments in MapNode.cpp for the answer.
// (Where it sets up the top-level VirtualProgram)
vp->setFunction(
"oe_multicomp_vertex",
s_createTextureVertexShader(layout, hasBlending),
ShaderComp::LOCATION_VERTEX_MODEL,
0.0 );
vp->setFunction(
"oe_multicomp_fragment",
s_createTextureFragShaderFunction(layout, maxUnits, hasBlending, _lodTransitionTime),
ShaderComp::LOCATION_FRAGMENT_COLORING,
0.0 );
//vp->setShader(
// "osgearth_vert_setupColoring",
// s_createTextureVertexShader(layout, hasBlending),
// osg::StateAttribute::ON | osg::StateAttribute::PROTECTED );
//vp->setShader(
// "osgearth_frag_applyColoring",
// s_createTextureFragShaderFunction(layout, maxUnits, hasBlending, _lodTransitionTime),
// osg::StateAttribute::ON | osg::StateAttribute::PROTECTED );
}
else
{
// Forcably disable shaders
stateSet->setAttributeAndModes( new osg::Program(), osg::StateAttribute::OFF | osg::StateAttribute::PROTECTED );
// Validate against the maximum number of textures available in FFP mode.
if ( maxUnits > Registry::instance()->getCapabilities().getMaxFFPTextureUnits() )
{
maxUnits = Registry::instance()->getCapabilities().getMaxFFPTextureUnits();
OE_WARN << LC <<
"Warning! You have exceeded the number of texture units available in fixed-function pipeline "
"mode on your graphics hardware (" << maxUnits << "). Consider using another "
"compositing mode." << std::endl;
}
// FFP multitexturing requires that we set up a series of TexCombine attributes:
if (maxUnits == 1)
{
osg::TexEnv* texenv = new osg::TexEnv(osg::TexEnv::MODULATE);
stateSet->setTextureAttributeAndModes(0, texenv, osg::StateAttribute::ON);
}
else if (maxUnits >= 2)
{
//Blend together the colors and accumulate the alpha values of textures 0 and 1 on unit 0
{
osg::TexEnvCombine* texenv = new osg::TexEnvCombine;
texenv->setCombine_RGB(osg::TexEnvCombine::INTERPOLATE);
texenv->setCombine_Alpha(osg::TexEnvCombine::ADD);
texenv->setSource0_RGB(osg::TexEnvCombine::TEXTURE0+1);
texenv->setOperand0_RGB(osg::TexEnvCombine::SRC_COLOR);
texenv->setSource0_Alpha(osg::TexEnvCombine::TEXTURE0+1);
texenv->setOperand0_Alpha(osg::TexEnvCombine::SRC_ALPHA);
texenv->setSource1_RGB(osg::TexEnvCombine::TEXTURE0+0);
texenv->setOperand1_RGB(osg::TexEnvCombine::SRC_COLOR);
texenv->setSource1_Alpha(osg::TexEnvCombine::TEXTURE0+0);
texenv->setOperand1_Alpha(osg::TexEnvCombine::SRC_ALPHA);
texenv->setSource2_RGB(osg::TexEnvCombine::TEXTURE0+1);
texenv->setOperand2_RGB(osg::TexEnvCombine::SRC_ALPHA);
stateSet->setTextureAttributeAndModes(0, texenv, osg::StateAttribute::ON);
}
//For textures 2 and beyond, blend them together with the previous
//Add the alpha values of this unit and the previous unit
for (int unit = 1; unit < maxUnits-1; ++unit)
{
osg::TexEnvCombine* texenv = new osg::TexEnvCombine;
texenv->setCombine_RGB(osg::TexEnvCombine::INTERPOLATE);
texenv->setCombine_Alpha(osg::TexEnvCombine::ADD);
texenv->setSource0_RGB(osg::TexEnvCombine::TEXTURE0+unit+1);
texenv->setOperand0_RGB(osg::TexEnvCombine::SRC_COLOR);
texenv->setSource0_Alpha(osg::TexEnvCombine::TEXTURE0+unit+1);
texenv->setOperand0_Alpha(osg::TexEnvCombine::SRC_ALPHA);
texenv->setSource1_RGB(osg::TexEnvCombine::PREVIOUS);
texenv->setOperand1_RGB(osg::TexEnvCombine::SRC_COLOR);
texenv->setSource1_Alpha(osg::TexEnvCombine::PREVIOUS);
texenv->setOperand1_Alpha(osg::TexEnvCombine::SRC_ALPHA);
texenv->setSource2_RGB(osg::TexEnvCombine::TEXTURE0+unit+1);
texenv->setOperand2_RGB(osg::TexEnvCombine::SRC_ALPHA);
stateSet->setTextureAttributeAndModes(unit, texenv, osg::StateAttribute::ON);
}
//Modulate the colors to get proper lighting on the last unit
//Keep the alpha results from the previous stage
{
osg::TexEnvCombine* texenv = new osg::TexEnvCombine;
texenv->setCombine_RGB(osg::TexEnvCombine::MODULATE);
texenv->setCombine_Alpha(osg::TexEnvCombine::REPLACE);
texenv->setSource0_RGB(osg::TexEnvCombine::PREVIOUS);
texenv->setOperand0_RGB(osg::TexEnvCombine::SRC_COLOR);
texenv->setSource0_Alpha(osg::TexEnvCombine::PREVIOUS);
texenv->setOperand0_Alpha(osg::TexEnvCombine::SRC_ALPHA);
texenv->setSource1_RGB(osg::TexEnvCombine::PRIMARY_COLOR);
texenv->setOperand1_RGB(osg::TexEnvCombine::SRC_COLOR);
stateSet->setTextureAttributeAndModes(maxUnits-1, texenv, osg::StateAttribute::ON);
}
}
}
}
void
TextureCompositorTexArray::applyLayerUpdate(osg::StateSet* stateSet,
UID layerUID,
const GeoImage& preparedImage,
const TileKey& tileKey,
const TextureLayout& layout,
osg::StateSet* parentStateSet) const
{
GeoExtent tileExtent(tileKey.getExtent());
int slot = layout.getSlot( layerUID );
if ( slot < 0 )
return; // means the layer no longer exists
// access the texture array, creating or growing it if necessary:
osg::Texture2DArray* texture = s_getTexture( stateSet, layout, 0,
textureSize() );
ensureSampler( stateSet, 0 );
// assign the new image at the proper position in the texture array.
osg::Image* image = preparedImage.getImage();
assignImage(texture, slot, image);
// update the region uniform to reflect the geo extent of the image:
const GeoExtent& imageExtent = preparedImage.getExtent();
osg::Vec4 tileTransform;
getImageTransform(tileExtent, imageExtent, tileTransform);
// access the region uniform, creating or growing it if necessary:
ArrayUniform regionUni( "region", osg::Uniform::FLOAT, stateSet, layout.getMaxUsedSlot()+1 );
if ( regionUni.isValid() )
{
int layerOffset = slot * 8;
for (int i = 0; i < 4; ++i)
regionUni.setElement( layerOffset + i, tileTransform[i]);
//region->dirty();
}
if ( layout.isBlendingEnabled( layerUID ) && regionUni.isValid() )
{
osg::Uniform* secondarySampler = ensureSampler( stateSet, 1 );
osg::Texture2DArray* parentTexture = 0;
const unsigned parentLayerOffset = slot * 8 + 4;
if ( parentStateSet )
{
ArrayUniform parentRegion( "region", osg::Uniform::FLOAT, parentStateSet, layout.getMaxUsedSlot()+1 );
//osg::Uniform* parentRegion = s_getRegionUniform( parentStateSet,
// layout );
GeoExtent parentExtent(tileKey.createParentKey().getExtent());
float widthRatio, heightRatio;
parentRegion.getElement(slot * 8 + 2, widthRatio);
parentRegion.getElement(slot * 8 + 3, heightRatio);
float parentImageWidth = parentExtent.width() / widthRatio;
float parentImageHeight = parentExtent.height() / heightRatio;
float xRatio, yRatio;
parentRegion.getElement(slot * 8, xRatio);
parentRegion.getElement(slot * 8 + 1, yRatio);
float ParentImageXmin = parentExtent.xMin() - xRatio * parentImageWidth;
float ParentImageYmin = parentExtent.yMin() - yRatio * parentImageHeight;
regionUni.setElement(parentLayerOffset,
static_cast<float>((tileExtent.xMin() - ParentImageXmin) / parentImageWidth));
regionUni.setElement(parentLayerOffset + 1,
static_cast<float>((tileExtent.yMin() - ParentImageYmin) / parentImageHeight));
regionUni.setElement(parentLayerOffset + 2,
static_cast<float>(tileExtent.width() / parentImageWidth));
regionUni.setElement(parentLayerOffset + 3,
static_cast<float>(tileExtent.height() / parentImageHeight));
//regionUni.dirty();
parentTexture = static_cast<osg::Texture2DArray*>(parentStateSet->getTextureAttribute(0, osg::StateAttribute::TEXTURE));
}
else
{
// setting the parent transform values to -1 disabled blending for this layer. #hack -gw
for (int i = 0; i < 4; ++i)
regionUni.setElement(parentLayerOffset + i, tileTransform[i]);
}
if (parentTexture)
stateSet->setTextureAttribute(1, parentTexture, osg::StateAttribute::ON);
else
secondarySampler->set(0);
// update the timestamp on the image layer to support fade-in blending.
float now = (float)osg::Timer::instance()->delta_s( osg::Timer::instance()->getStartTick(), osg::Timer::instance()->tick() );
ArrayUniform stampUniform( "osgearth_SlotStamp", osg::Uniform::FLOAT, stateSet, layout.getMaxUsedSlot()+1 );
stampUniform.setElement( slot, now );
}
}
