2 * Copyright (c) 2023 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #include <dali/internal/render/renderers/render-geometry.h>
21 #include <dali/internal/common/buffer-index.h>
22 #include <dali/internal/render/renderers/render-vertex-buffer.h>
23 #include <dali/internal/render/shaders/program.h>
33 inline constexpr size_t GetSizeOfIndexFromIndexType(Dali::Graphics::Format graphicsFormat)
35 switch(graphicsFormat)
37 case Dali::Graphics::Format::R16_UINT:
39 return sizeof(uint16_t);
41 case Dali::Graphics::Format::R32_UINT:
43 return sizeof(uint32_t);
47 // TODO : Not implmeneted.
48 return sizeof(uint16_t);
52 } // unnamed namespace
55 mIndexBuffer(nullptr),
56 mIndexType(Dali::Graphics::Format::R16_UINT),
57 mGeometryType(Dali::Geometry::TRIANGLES),
58 mIndicesChanged(false),
59 mHasBeenUpdated(false),
60 mAttributesChanged(true)
64 Geometry::~Geometry() = default;
66 void Geometry::AddVertexBuffer(Render::VertexBuffer* vertexBuffer)
68 mVertexBuffers.PushBack(vertexBuffer);
69 mAttributesChanged = true;
72 const Vector<Render::VertexBuffer*>& Geometry::GetVertexBuffers() const
74 return mVertexBuffers;
77 void Geometry::SetIndexBuffer(Uint16ContainerType& indices)
79 mIndices.Swap(indices);
80 mIndicesChanged = true;
81 mIndexType = Graphics::Format::R16_UINT;
84 void Geometry::SetIndexBuffer(Uint32ContainerType& indices)
86 // mIndices type is not matched with indices. Copy memory hardly.
87 mIndices.ResizeUninitialized(indices.Count() * 2);
88 memcpy(mIndices.Begin(), indices.Begin(), indices.Count() * sizeof(uint32_t));
89 mIndicesChanged = true;
90 mIndexType = Graphics::Format::R32_UINT;
93 void Geometry::RemoveVertexBuffer(const Render::VertexBuffer* vertexBuffer)
95 const auto&& end = mVertexBuffers.End();
96 // @todo if this buffer is the only instance buffer, reduce instance count to 1.
97 for(auto&& iter = mVertexBuffers.Begin(); iter != end; ++iter)
99 if(*iter == vertexBuffer)
101 //This will delete the gpu buffer associated to the RenderVertexBuffer if there is one
102 mVertexBuffers.Remove(iter);
103 mAttributesChanged = true;
109 void Geometry::OnRenderFinished()
111 mHasBeenUpdated = false;
112 mAttributesChanged = false;
115 void Geometry::Upload(Graphics::Controller& graphicsController)
124 mIndexBuffer = nullptr;
128 if(mIndexBuffer == nullptr)
130 // Currently we are unable to reuse index buffer so the write policy is to preserve current content
131 mIndexBuffer = new GpuBuffer(graphicsController, 0 | Graphics::BufferUsage::INDEX_BUFFER, GpuBuffer::WritePolicy::RETAIN);
134 uint32_t bufferSize = static_cast<uint32_t>(sizeof(uint16_t) * mIndices.Size());
135 mIndexBuffer->UpdateDataBuffer(graphicsController, bufferSize, &mIndices[0]);
138 mIndicesChanged = false;
141 for(auto&& buffer : mVertexBuffers)
143 if(!buffer->Update(graphicsController))
145 //Vertex buffer is not ready ( Size, data or format has not been specified yet )
150 mHasBeenUpdated = true;
154 bool Geometry::BindVertexAttributes(Graphics::CommandBuffer& commandBuffer)
156 //Bind buffers to attribute locations
157 const auto vertexBufferCount = static_cast<uint32_t>(mVertexBuffers.Count());
159 std::vector<const Graphics::Buffer*> buffers;
160 std::vector<uint32_t> offsets;
162 for(uint32_t i = 0; i < vertexBufferCount; ++i)
164 if(mVertexBuffers[i]->GetDivisor() > 0)
166 mInstanceCount = mVertexBuffers[i]->GetElementCount();
169 const GpuBuffer* gpuBuffer = mVertexBuffers[i]->GetGpuBuffer();
172 const Graphics::Buffer* buffer = gpuBuffer->GetGraphicsObject();
176 buffers.push_back(buffer);
177 offsets.push_back(0u);
180 //@todo Figure out why this is being drawn without geometry having been uploaded
187 commandBuffer.BindVertexBuffers(0, buffers, offsets);
193 Graphics::Controller& graphicsController,
194 Graphics::CommandBuffer& commandBuffer,
195 uint32_t elementBufferOffset,
196 uint32_t elementBufferCount)
198 uint32_t numIndices(0u);
199 intptr_t firstIndexOffset(0u);
202 std::size_t sizeOfIndex = GetSizeOfIndexFromIndexType(mIndexType);
204 numIndices = static_cast<uint32_t>(mIndices.Size() * sizeof(uint16_t) / sizeOfIndex);
206 if(elementBufferOffset != 0u)
208 elementBufferOffset = (elementBufferOffset >= numIndices) ? numIndices - 1 : elementBufferOffset;
209 firstIndexOffset = intptr_t(elementBufferOffset * sizeOfIndex);
210 numIndices -= elementBufferOffset;
213 if(elementBufferCount != 0u)
215 numIndices = std::min(elementBufferCount, numIndices);
220 if(mIndexBuffer && mGeometryType != Dali::Geometry::POINTS)
223 const Graphics::Buffer* ibo = mIndexBuffer->GetGraphicsObject();
226 commandBuffer.BindIndexBuffer(*ibo, 0, mIndexType);
229 commandBuffer.DrawIndexed(numIndices, mInstanceCount, firstIndexOffset, 0, 0);
233 // Un-indexed draw call
234 uint32_t numVertices(0u);
236 if(mVertexBuffers.Count() > 0)
238 // truncated, no value loss happening in practice
239 numVertices = static_cast<uint32_t>(mVertexBuffers[0]->GetElementCount());
242 commandBuffer.Draw(numVertices, mInstanceCount, 0, 0);
247 Graphics::PrimitiveTopology Geometry::GetTopology() const
249 Graphics::PrimitiveTopology topology = Graphics::PrimitiveTopology::TRIANGLE_LIST;
251 switch(mGeometryType)
253 case Dali::Geometry::TRIANGLES:
255 topology = Graphics::PrimitiveTopology::TRIANGLE_LIST;
258 case Dali::Geometry::LINES:
260 topology = Graphics::PrimitiveTopology::LINE_LIST;
263 case Dali::Geometry::POINTS:
265 topology = Graphics::PrimitiveTopology::POINT_LIST;
268 case Dali::Geometry::TRIANGLE_STRIP:
270 topology = Graphics::PrimitiveTopology::TRIANGLE_STRIP;
273 case Dali::Geometry::TRIANGLE_FAN:
275 topology = Graphics::PrimitiveTopology::TRIANGLE_FAN;
278 case Dali::Geometry::LINE_LOOP:
280 topology = Graphics::PrimitiveTopology::LINE_LOOP;
283 case Dali::Geometry::LINE_STRIP:
285 topology = Graphics::PrimitiveTopology::LINE_STRIP;
292 } // namespace Render
293 } // namespace Internal