mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-10-05 01:49:02 +00:00
8f025a2c56
This commit makes `LineRenderer` and `TextRenderer` to batch line and text rendering. Batching them has shown a significant speedup, especially when usin CUDA.
72 lines
2.7 KiB
C++
72 lines
2.7 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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//
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//============================================================================
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#include <vtkm/rendering/LineRenderer.h>
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#include <vtkm/rendering/TextRenderer.h>
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#include <vtkm/rendering/WorldAnnotator.h>
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namespace vtkm
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{
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namespace rendering
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{
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WorldAnnotator::WorldAnnotator(const vtkm::rendering::Canvas* canvas)
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: Canvas(canvas)
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{
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}
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WorldAnnotator::~WorldAnnotator() {}
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void WorldAnnotator::AddLine(const vtkm::Vec3f_64& point0,
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const vtkm::Vec3f_64& point1,
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vtkm::Float32 lineWidth,
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const vtkm::rendering::Color& color,
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bool vtkmNotUsed(inFront)) const
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{
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vtkm::Matrix<vtkm::Float32, 4, 4> transform =
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vtkm::MatrixMultiply(Canvas->GetProjection(), Canvas->GetModelView());
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vtkm::rendering::WorldAnnotator* self = const_cast<vtkm::rendering::WorldAnnotator*>(this);
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LineRenderer renderer(Canvas, transform, &(self->LineBatcher));
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renderer.RenderLine(point0, point1, lineWidth, color);
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}
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void WorldAnnotator::BeginLineRenderingBatch() const
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{
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vtkm::rendering::WorldAnnotator* self = const_cast<vtkm::rendering::WorldAnnotator*>(this);
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self->LineBatcher = vtkm::rendering::LineRendererBatcher();
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}
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void WorldAnnotator::EndLineRenderingBatch() const
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{
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vtkm::rendering::WorldAnnotator* self = const_cast<vtkm::rendering::WorldAnnotator*>(this);
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vtkm::rendering::Canvas* canvas = const_cast<vtkm::rendering::Canvas*>(this->Canvas);
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self->LineBatcher.Render(canvas);
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}
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void WorldAnnotator::AddText(const vtkm::Vec3f_32& origin,
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const vtkm::Vec3f_32& right,
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const vtkm::Vec3f_32& up,
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vtkm::Float32 scale,
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const vtkm::Vec2f_32& anchor,
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const vtkm::rendering::Color& color,
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const std::string& text,
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const vtkm::Float32 depth) const
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{
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vtkm::Vec3f_32 n = vtkm::Cross(right, up);
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vtkm::Normalize(n);
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vtkm::Matrix<vtkm::Float32, 4, 4> transform = MatrixHelpers::WorldMatrix(origin, right, up, n);
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transform = vtkm::MatrixMultiply(Canvas->GetModelView(), transform);
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transform = vtkm::MatrixMultiply(Canvas->GetProjection(), transform);
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Canvas->AddText(transform, scale, anchor, color, text, depth);
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}
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}
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} // namespace vtkm::rendering
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