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#include "drape_frontend/path_text_shape.hpp"
#include "drape_frontend/path_text_handle.hpp"
#include "drape_frontend/render_state_extension.hpp"
#include "shaders/programs.hpp"
#include "drape/attribute_provider.hpp"
#include "drape/batcher.hpp"
#include "drape/overlay_handle.hpp"
#include "base/logging.hpp"
#include "base/math.hpp"
#include "base/matrix.hpp"
#include "base/stl_helpers.hpp"
#include "base/string_utils.hpp"
#include "base/timer.hpp"
#include "geometry/transformations.hpp"
using m2::Spline;
namespace df
{
PathTextShape::PathTextShape(m2::SharedSpline const & spline,
PathTextViewParams const & params,
TileKey const & tileKey, uint32_t baseTextIndex)
: m_spline(spline)
, m_params(params)
, m_tileCoords(tileKey.GetTileCoords())
, m_baseTextIndex(baseTextIndex)
{
m_context.reset(new PathTextContext(m_spline));
}
bool PathTextShape::CalculateLayout(ref_ptr<dp::TextureManager> textures)
{
std::string text = m_params.m_mainText;
if (!m_params.m_auxText.empty())
text += " " + m_params.m_auxText;
auto layout = make_unique_dp<PathTextLayout>(m_params.m_tileCenter,
strings::MakeUniString(text),
m_params.m_textFont.m_size,
m_params.m_textFont.m_isSdf,
textures);
uint32_t const glyphCount = layout->GetGlyphCount();
if (glyphCount == 0)
return false;
m_context->SetLayout(std::move(layout), m_params.m_baseGtoPScale);
return !m_context->GetOffsets().empty();
}
uint64_t PathTextShape::GetOverlayPriority(uint32_t textIndex, size_t textLength) const
{
// Overlay priority for path text shapes considers length of the text and index of text.
// Greater text length has more priority, because smaller texts have more chances to be shown along the road.
// [6 bytes - standard overlay priority][1 byte - length][1 byte - path text index].
// Special displacement mode.
if (m_params.m_specialDisplacement == SpecialDisplacement::SpecialMode)
return dp::CalculateSpecialModePriority(m_params.m_specialPriority);
static uint64_t constexpr kMask = ~static_cast<uint64_t>(0xFFFF);
uint64_t priority = dp::CalculateOverlayPriority(m_params.m_minVisibleScale, m_params.m_rank,
m_params.m_depth);
priority &= kMask;
priority |= (static_cast<uint8_t>(textLength) << 8);
priority |= static_cast<uint8_t>(textIndex);
return priority;
}
void PathTextShape::DrawPathTextPlain(ref_ptr<dp::GraphicsContext> context,
ref_ptr<dp::TextureManager> textures,
ref_ptr<dp::Batcher> batcher) const
{
auto const layout = m_context->GetLayout();
ASSERT(layout != nullptr, ());
ASSERT(!m_context->GetOffsets().empty(), ());
dp::TextureManager::ColorRegion color;
textures->GetColorRegion(m_params.m_textFont.m_color, color);
auto state = CreateRenderState(layout->GetFixedHeight() > 0 ?
gpu::Program::TextFixed : gpu::Program::Text,
DepthLayer::OverlayLayer);
state.SetProgram3d(layout->GetFixedHeight() > 0 ?
gpu::Program::TextFixedBillboard : gpu::Program::TextBillboard);
state.SetDepthTestEnabled(m_params.m_depthTestEnabled);
state.SetColorTexture(color.GetTexture());
state.SetMaskTexture(layout->GetMaskTexture());
gpu::TTextStaticVertexBuffer staticBuffer;
gpu::TTextDynamicVertexBuffer dynBuffer;
for (uint32_t textIndex = 0; textIndex < m_context->GetOffsets().size(); ++textIndex)
{
staticBuffer.clear();
dynBuffer.clear();
layout->CacheStaticGeometry(color, staticBuffer);
dynBuffer.resize(staticBuffer.size());
dp::AttributeProvider provider(2, static_cast<uint32_t>(staticBuffer.size()));
provider.InitStream(0, gpu::TextStaticVertex::GetBindingInfo(),
make_ref(staticBuffer.data()));
provider.InitStream(1, gpu::TextDynamicVertex::GetBindingInfo(),
make_ref(dynBuffer.data()));
batcher->InsertListOfStrip(context, state, make_ref(&provider),
CreateOverlayHandle(textIndex, textures), 4);
}
}
void PathTextShape::DrawPathTextOutlined(ref_ptr<dp::GraphicsContext> context,
ref_ptr<dp::TextureManager> textures,
ref_ptr<dp::Batcher> batcher) const
{
auto const layout = m_context->GetLayout();
ASSERT(layout != nullptr, ());
ASSERT(!m_context->GetOffsets().empty(), ());
dp::TextureManager::ColorRegion color;
dp::TextureManager::ColorRegion outline;
textures->GetColorRegion(m_params.m_textFont.m_color, color);
textures->GetColorRegion(m_params.m_textFont.m_outlineColor, outline);
auto state = CreateRenderState(gpu::Program::TextOutlined, DepthLayer::OverlayLayer);
state.SetProgram3d(gpu::Program::TextOutlinedBillboard);
state.SetDepthTestEnabled(m_params.m_depthTestEnabled);
state.SetColorTexture(color.GetTexture());
state.SetMaskTexture(layout->GetMaskTexture());
gpu::TTextOutlinedStaticVertexBuffer staticBuffer;
gpu::TTextDynamicVertexBuffer dynBuffer;
for (uint32_t textIndex = 0; textIndex < m_context->GetOffsets().size(); ++textIndex)
{
staticBuffer.clear();
dynBuffer.clear();
layout->CacheStaticGeometry(color, outline, staticBuffer);
dynBuffer.resize(staticBuffer.size());
dp::AttributeProvider provider(2, static_cast<uint32_t>(staticBuffer.size()));
provider.InitStream(0, gpu::TextOutlinedStaticVertex::GetBindingInfo(),
make_ref(staticBuffer.data()));
provider.InitStream(1, gpu::TextDynamicVertex::GetBindingInfo(),
make_ref(dynBuffer.data()));
batcher->InsertListOfStrip(context, state, make_ref(&provider),
CreateOverlayHandle(textIndex, textures), 4);
}
}
drape_ptr<dp::OverlayHandle> PathTextShape::CreateOverlayHandle(uint32_t textIndex,
ref_ptr<dp::TextureManager> textures) const
{
dp::OverlayID const overlayId = dp::OverlayID(m_params.m_featureID, m_tileCoords,
m_baseTextIndex + textIndex);
auto const layout = m_context->GetLayout();
auto const priority = GetOverlayPriority(textIndex, layout->GetText().size());
return make_unique_dp<PathTextHandle>(overlayId, m_context, m_params.m_depth,
textIndex, priority, layout->GetFixedHeight(),
textures, m_params.m_minVisibleScale, true /* isBillboard */);
}
void PathTextShape::Draw(ref_ptr<dp::GraphicsContext> context, ref_ptr<dp::Batcher> batcher,
ref_ptr<dp::TextureManager> textures) const
{
if (m_context->GetLayout() == nullptr || m_context->GetOffsets().empty())
return;
if (m_params.m_textFont.m_outlineColor == dp::Color::Transparent())
DrawPathTextPlain(context, textures, batcher);
else
DrawPathTextOutlined(context, textures, batcher);
}
} // namespace df
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