VkPipeline simple implementation
Added a few class members and adjusted the VkPipeline constructor
to extract basic parameters which will be used for rendering, like:
- Basic sw::Context parameters
- Scissor
- Viewport
- BlendConstants
Note: sw::Context should eventually be replaced by VkPipeline and be
used directly by sw::Renderer once all existing OpenGL ES 3.0
has been converted from VkPipeline.
(Chris: rebase + build system fixes for CMake path)
Change-Id: I7e7a9ff3c768da8e8c1e9461e140af4986429602
Reviewed-on: https://swiftshader-review.googlesource.com/c/22613
Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Corentin Wallez <cwallez@google.com>
diff --git a/CMakeLists.txt b/CMakeLists.txt
index d277cd2..0068ffb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1977,10 +1977,30 @@
${VULKAN_DIR}/*.cpp
${VULKAN_DIR}/*.h
${VULKAN_DIR}/*.hpp
- ${SOURCE_DIR}/System/Memory.cpp
- ${SOURCE_DIR}/System/Memory.hpp
+ ${SOURCE_DIR}/System/CPUID.cpp
+ ${SOURCE_DIR}/System/CPUID.hpp
+ ${SOURCE_DIR}/System/Configurator.cpp
+ ${SOURCE_DIR}/System/Configurator.hpp
${SOURCE_DIR}/System/Debug.cpp
${SOURCE_DIR}/System/Debug.hpp
+ ${SOURCE_DIR}/System/Half.cpp
+ ${SOURCE_DIR}/System/Half.hpp
+ ${SOURCE_DIR}/System/Math.cpp
+ ${SOURCE_DIR}/System/Math.hpp
+ ${SOURCE_DIR}/System/Memory.cpp
+ ${SOURCE_DIR}/System/Memory.hpp
+ ${SOURCE_DIR}/System/Resource.cpp
+ ${SOURCE_DIR}/System/Resource.hpp
+ ${SOURCE_DIR}/System/Socket.cpp
+ ${SOURCE_DIR}/System/Socket.hpp
+ ${SOURCE_DIR}/System/Thread.cpp
+ ${SOURCE_DIR}/System/Thread.hpp
+ ${SOURCE_DIR}/System/Timer.cpp
+ ${SOURCE_DIR}/System/Timer.hpp
+ ${SOURCE_DIR}/Device/*.cpp
+ ${SOURCE_DIR}/Device/*.hpp
+ ${SOURCE_DIR}/Pipeline/*.cpp
+ ${SOURCE_DIR}/Pipeline/*.hpp
${CMAKE_CURRENT_SOURCE_DIR}/include/vulkan/*.h}
)
@@ -2153,7 +2173,7 @@
PREFIX ""
)
set_shared_library_export_map(libvk_swiftshader ${SOURCE_DIR}/Vulkan)
- target_link_libraries(libvk_swiftshader ${OS_LIBS})
+ target_link_libraries(libvk_swiftshader ${Reactor} ${OS_LIBS})
add_custom_command(
TARGET libvk_swiftshader
POST_BUILD
diff --git a/src/Vulkan/VkPipeline.cpp b/src/Vulkan/VkPipeline.cpp
index 04b96d8..2282df2 100644
--- a/src/Vulkan/VkPipeline.cpp
+++ b/src/Vulkan/VkPipeline.cpp
@@ -13,12 +13,354 @@
// limitations under the License.
#include "VkPipeline.hpp"
+#include "VkShaderModule.hpp"
+
+namespace
+{
+
+sw::DrawType Convert(VkPrimitiveTopology topology)
+{
+ switch(topology)
+ {
+ case VK_PRIMITIVE_TOPOLOGY_POINT_LIST:
+ return sw::DRAW_POINTLIST;
+ case VK_PRIMITIVE_TOPOLOGY_LINE_LIST:
+ return sw::DRAW_LINELIST;
+ case VK_PRIMITIVE_TOPOLOGY_LINE_STRIP:
+ return sw::DRAW_LINESTRIP;
+ case VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST:
+ return sw::DRAW_TRIANGLELIST;
+ case VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP:
+ return sw::DRAW_TRIANGLESTRIP;
+ case VK_PRIMITIVE_TOPOLOGY_TRIANGLE_FAN:
+ return sw::DRAW_TRIANGLEFAN;
+ case VK_PRIMITIVE_TOPOLOGY_LINE_LIST_WITH_ADJACENCY:
+ case VK_PRIMITIVE_TOPOLOGY_LINE_STRIP_WITH_ADJACENCY:
+ case VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST_WITH_ADJACENCY:
+ case VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP_WITH_ADJACENCY:
+ // geometry shader specific
+ ASSERT(false);
+ break;
+ case VK_PRIMITIVE_TOPOLOGY_PATCH_LIST:
+ // tesselation shader specific
+ ASSERT(false);
+ break;
+ default:
+ UNIMPLEMENTED();
+ }
+
+ return sw::DRAW_TRIANGLELIST;
+}
+
+sw::Rect Convert(const VkRect2D& rect)
+{
+ return sw::Rect(rect.offset.x, rect.offset.y, rect.offset.x + rect.extent.width, rect.offset.y + rect.extent.height);
+}
+
+sw::StreamType getStreamType(VkFormat format)
+{
+ switch(format)
+ {
+ case VK_FORMAT_R8_UNORM:
+ case VK_FORMAT_R8G8_UNORM:
+ case VK_FORMAT_R8G8B8A8_UNORM:
+ case VK_FORMAT_R8_UINT:
+ case VK_FORMAT_R8G8_UINT:
+ case VK_FORMAT_R8G8B8A8_UINT:
+ case VK_FORMAT_B8G8R8A8_UNORM:
+ case VK_FORMAT_A8B8G8R8_UNORM_PACK32:
+ case VK_FORMAT_A8B8G8R8_UINT_PACK32:
+ return sw::STREAMTYPE_BYTE;
+ case VK_FORMAT_R8_SNORM:
+ case VK_FORMAT_R8_SINT:
+ case VK_FORMAT_R8G8_SNORM:
+ case VK_FORMAT_R8G8_SINT:
+ case VK_FORMAT_R8G8B8A8_SNORM:
+ case VK_FORMAT_R8G8B8A8_SINT:
+ case VK_FORMAT_A8B8G8R8_SNORM_PACK32:
+ case VK_FORMAT_A8B8G8R8_SINT_PACK32:
+ return sw::STREAMTYPE_SBYTE;
+ case VK_FORMAT_A2B10G10R10_UNORM_PACK32:
+ return sw::STREAMTYPE_2_10_10_10_UINT;
+ case VK_FORMAT_R16_UNORM:
+ case VK_FORMAT_R16_UINT:
+ case VK_FORMAT_R16G16_UNORM:
+ case VK_FORMAT_R16G16_UINT:
+ case VK_FORMAT_R16G16B16A16_UNORM:
+ case VK_FORMAT_R16G16B16A16_UINT:
+ return sw::STREAMTYPE_USHORT;
+ case VK_FORMAT_R16_SNORM:
+ case VK_FORMAT_R16_SINT:
+ case VK_FORMAT_R16G16_SNORM:
+ case VK_FORMAT_R16G16_SINT:
+ case VK_FORMAT_R16G16B16A16_SNORM:
+ case VK_FORMAT_R16G16B16A16_SINT:
+ return sw::STREAMTYPE_SHORT;
+ case VK_FORMAT_R16_SFLOAT:
+ case VK_FORMAT_R16G16_SFLOAT:
+ case VK_FORMAT_R16G16B16A16_SFLOAT:
+ return sw::STREAMTYPE_HALF;
+ case VK_FORMAT_R32_UINT:
+ case VK_FORMAT_R32G32_UINT:
+ case VK_FORMAT_R32G32B32_UINT:
+ case VK_FORMAT_R32G32B32A32_UINT:
+ return sw::STREAMTYPE_UINT;
+ case VK_FORMAT_R32_SINT:
+ case VK_FORMAT_R32G32_SINT:
+ case VK_FORMAT_R32G32B32_SINT:
+ case VK_FORMAT_R32G32B32A32_SINT:
+ return sw::STREAMTYPE_INT;
+ case VK_FORMAT_R32_SFLOAT:
+ case VK_FORMAT_R32G32_SFLOAT:
+ case VK_FORMAT_R32G32B32_SFLOAT:
+ case VK_FORMAT_R32G32B32A32_SFLOAT:
+ return sw::STREAMTYPE_FLOAT;
+ default:
+ UNIMPLEMENTED();
+ }
+
+ return sw::STREAMTYPE_BYTE;
+}
+
+uint32_t getNumberOfChannels(VkFormat format)
+{
+ switch(format)
+ {
+ case VK_FORMAT_R8_UNORM:
+ case VK_FORMAT_R8_SNORM:
+ case VK_FORMAT_R8_UINT:
+ case VK_FORMAT_R8_SINT:
+ case VK_FORMAT_R16_UNORM:
+ case VK_FORMAT_R16_SNORM:
+ case VK_FORMAT_R16_UINT:
+ case VK_FORMAT_R16_SINT:
+ case VK_FORMAT_R16_SFLOAT:
+ case VK_FORMAT_R32_UINT:
+ case VK_FORMAT_R32_SINT:
+ case VK_FORMAT_R32_SFLOAT:
+ return 1;
+ case VK_FORMAT_R8G8_UNORM:
+ case VK_FORMAT_R8G8_SNORM:
+ case VK_FORMAT_R8G8_UINT:
+ case VK_FORMAT_R8G8_SINT:
+ case VK_FORMAT_R16G16_UNORM:
+ case VK_FORMAT_R16G16_SNORM:
+ case VK_FORMAT_R16G16_UINT:
+ case VK_FORMAT_R16G16_SINT:
+ case VK_FORMAT_R16G16_SFLOAT:
+ case VK_FORMAT_R32G32_UINT:
+ case VK_FORMAT_R32G32_SINT:
+ case VK_FORMAT_R32G32_SFLOAT:
+ return 2;
+ case VK_FORMAT_R32G32B32_UINT:
+ case VK_FORMAT_R32G32B32_SINT:
+ case VK_FORMAT_R32G32B32_SFLOAT:
+ return 3;
+ case VK_FORMAT_R8G8B8A8_UNORM:
+ case VK_FORMAT_R8G8B8A8_SNORM:
+ case VK_FORMAT_R8G8B8A8_UINT:
+ case VK_FORMAT_R8G8B8A8_SINT:
+ case VK_FORMAT_B8G8R8A8_UNORM:
+ case VK_FORMAT_A8B8G8R8_UNORM_PACK32:
+ case VK_FORMAT_A8B8G8R8_SNORM_PACK32:
+ case VK_FORMAT_A8B8G8R8_UINT_PACK32:
+ case VK_FORMAT_A8B8G8R8_SINT_PACK32:
+ case VK_FORMAT_A2B10G10R10_UNORM_PACK32:
+ case VK_FORMAT_R16G16B16A16_UNORM:
+ case VK_FORMAT_R16G16B16A16_SNORM:
+ case VK_FORMAT_R16G16B16A16_UINT:
+ case VK_FORMAT_R16G16B16A16_SINT:
+ case VK_FORMAT_R16G16B16A16_SFLOAT:
+ case VK_FORMAT_R32G32B32A32_UINT:
+ case VK_FORMAT_R32G32B32A32_SINT:
+ case VK_FORMAT_R32G32B32A32_SFLOAT:
+ return 4;
+ default:
+ UNIMPLEMENTED();
+ }
+
+ return 0;
+}
+
+}
namespace vk
{
GraphicsPipeline::GraphicsPipeline(const VkGraphicsPipelineCreateInfo* pCreateInfo, void* mem)
{
+ if((pCreateInfo->flags != 0) ||
+ (pCreateInfo->stageCount != 2) ||
+ (pCreateInfo->pTessellationState != nullptr) ||
+ (pCreateInfo->pDynamicState != nullptr) ||
+ (pCreateInfo->subpass != 0) ||
+ (pCreateInfo->basePipelineHandle != VK_NULL_HANDLE) ||
+ (pCreateInfo->basePipelineIndex != 0))
+ {
+ UNIMPLEMENTED();
+ }
+
+ const VkPipelineShaderStageCreateInfo& vertexStage = pCreateInfo->pStages[0];
+ if((vertexStage.stage != VK_SHADER_STAGE_VERTEX_BIT) ||
+ (vertexStage.flags != 0) ||
+ (vertexStage.pSpecializationInfo != nullptr))
+ {
+ UNIMPLEMENTED();
+ }
+
+ const VkPipelineShaderStageCreateInfo& fragmentStage = pCreateInfo->pStages[1];
+ if((fragmentStage.stage != VK_SHADER_STAGE_FRAGMENT_BIT) ||
+ (fragmentStage.flags != 0) ||
+ (fragmentStage.pSpecializationInfo != nullptr))
+ {
+ UNIMPLEMENTED();
+ }
+
+ const VkPipelineVertexInputStateCreateInfo* vertexInputState = pCreateInfo->pVertexInputState;
+ if(vertexInputState->flags != 0)
+ {
+ UNIMPLEMENTED();
+ }
+
+ for(uint32_t i = 0; i < vertexInputState->vertexBindingDescriptionCount; i++)
+ {
+ const VkVertexInputBindingDescription* vertexBindingDescription = vertexInputState->pVertexBindingDescriptions;
+ context.input[vertexBindingDescription->binding].stride = vertexBindingDescription->stride;
+ if(vertexBindingDescription->inputRate != VK_VERTEX_INPUT_RATE_VERTEX)
+ {
+ UNIMPLEMENTED();
+ }
+ }
+
+ for(uint32_t i = 0; i < vertexInputState->vertexAttributeDescriptionCount; i++)
+ {
+ const VkVertexInputAttributeDescription* vertexAttributeDescriptions = vertexInputState->pVertexAttributeDescriptions;
+ sw::Stream& input = context.input[vertexAttributeDescriptions->binding];
+ input.count = getNumberOfChannels(vertexAttributeDescriptions->format);
+ input.type = getStreamType(vertexAttributeDescriptions->format);
+ input.normalized = !sw::Surface::isNonNormalizedInteger(vertexAttributeDescriptions->format);
+
+ if(vertexAttributeDescriptions->location != vertexAttributeDescriptions->binding)
+ {
+ UNIMPLEMENTED();
+ }
+ if(vertexAttributeDescriptions->offset != 0)
+ {
+ UNIMPLEMENTED();
+ }
+ }
+
+ const VkPipelineInputAssemblyStateCreateInfo* assemblyState = pCreateInfo->pInputAssemblyState;
+ if((assemblyState->flags != 0) ||
+ (assemblyState->primitiveRestartEnable != 0))
+ {
+ UNIMPLEMENTED();
+ }
+
+ context.drawType = Convert(assemblyState->topology);
+
+ const VkPipelineViewportStateCreateInfo* viewportState = pCreateInfo->pViewportState;
+ if((viewportState->flags != 0) ||
+ (viewportState->viewportCount != 1) ||
+ (viewportState->scissorCount != 1))
+ {
+ UNIMPLEMENTED();
+ }
+
+ scissor = Convert(viewportState->pScissors[0]);
+ viewport = viewportState->pViewports[0];
+
+ const VkPipelineRasterizationStateCreateInfo* rasterizationState = pCreateInfo->pRasterizationState;
+ if((rasterizationState->flags != 0) ||
+ (rasterizationState->depthClampEnable != 0) ||
+ (rasterizationState->polygonMode != VK_POLYGON_MODE_FILL))
+ {
+ UNIMPLEMENTED();
+ }
+
+ context.rasterizerDiscard = rasterizationState->rasterizerDiscardEnable;
+ context.frontFacingCCW = rasterizationState->frontFace == VK_FRONT_FACE_COUNTER_CLOCKWISE;
+ context.depthBias = (rasterizationState->depthBiasEnable ? rasterizationState->depthBiasConstantFactor : 0.0f);
+ context.slopeDepthBias = (rasterizationState->depthBiasEnable ? rasterizationState->depthBiasSlopeFactor : 0.0f);
+
+ const VkPipelineMultisampleStateCreateInfo* multisampleState = pCreateInfo->pMultisampleState;
+ if((multisampleState->flags != 0) ||
+ (multisampleState->rasterizationSamples != VK_SAMPLE_COUNT_1_BIT) ||
+ (multisampleState->sampleShadingEnable != 0) ||
+ (multisampleState->pSampleMask != nullptr) ||
+ (multisampleState->alphaToCoverageEnable != 0) ||
+ (multisampleState->alphaToOneEnable != 0))
+ {
+ UNIMPLEMENTED();
+ }
+
+ const VkPipelineDepthStencilStateCreateInfo* depthStencilState = pCreateInfo->pDepthStencilState;
+ if((depthStencilState->flags != 0) ||
+ (depthStencilState->depthBoundsTestEnable != 0) ||
+ (depthStencilState->minDepthBounds != 0.0f) ||
+ (depthStencilState->maxDepthBounds != 1.0f))
+ {
+ UNIMPLEMENTED();
+ }
+
+ context.depthBufferEnable = depthStencilState->depthTestEnable;
+ context.depthWriteEnable = depthStencilState->depthWriteEnable;
+ context.depthCompareMode = depthStencilState->depthCompareOp;
+
+ context.stencilEnable = context.twoSidedStencil = depthStencilState->stencilTestEnable;
+ if(context.stencilEnable)
+ {
+ context.stencilMask = depthStencilState->front.compareMask;
+ context.stencilCompareMode = depthStencilState->front.compareOp;
+ context.stencilZFailOperation = depthStencilState->front.depthFailOp;
+ context.stencilFailOperation = depthStencilState->front.failOp;
+ context.stencilPassOperation = depthStencilState->front.passOp;
+ context.stencilReference = depthStencilState->front.reference;
+ context.stencilWriteMask = depthStencilState->front.writeMask;
+
+ context.stencilMaskCCW = depthStencilState->back.compareMask;
+ context.stencilCompareModeCCW = depthStencilState->back.compareOp;
+ context.stencilZFailOperationCCW = depthStencilState->back.depthFailOp;
+ context.stencilFailOperationCCW = depthStencilState->back.failOp;
+ context.stencilPassOperationCCW = depthStencilState->back.passOp;
+ context.stencilReferenceCCW = depthStencilState->back.reference;
+ context.stencilWriteMaskCCW = depthStencilState->back.writeMask;
+ }
+
+ const VkPipelineColorBlendStateCreateInfo* colorBlendState = pCreateInfo->pColorBlendState;
+ if((colorBlendState->flags != 0) ||
+ ((colorBlendState->logicOpEnable != 0) &&
+ (colorBlendState->attachmentCount > 1)))
+ {
+ UNIMPLEMENTED();
+ }
+
+ context.colorLogicOpEnabled = colorBlendState->logicOpEnable;
+ context.logicalOperation = colorBlendState->logicOp;
+ blendConstants.r = colorBlendState->blendConstants[0];
+ blendConstants.g = colorBlendState->blendConstants[1];
+ blendConstants.b = colorBlendState->blendConstants[2];
+ blendConstants.a = colorBlendState->blendConstants[3];
+
+ if(colorBlendState->attachmentCount == 1)
+ {
+ const VkPipelineColorBlendAttachmentState& attachment = colorBlendState->pAttachments[0];
+ if(attachment.colorWriteMask != (VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT))
+ {
+ UNIMPLEMENTED();
+ }
+
+ context.alphaBlendEnable = attachment.blendEnable;
+ context.separateAlphaBlendEnable = (attachment.alphaBlendOp != attachment.colorBlendOp) ||
+ (attachment.dstAlphaBlendFactor != attachment.dstColorBlendFactor) ||
+ (attachment.srcAlphaBlendFactor != attachment.srcColorBlendFactor);
+ context.blendOperationStateAlpha = attachment.alphaBlendOp;
+ context.blendOperationState = attachment.colorBlendOp;
+ context.destBlendFactorStateAlpha = attachment.dstAlphaBlendFactor;
+ context.destBlendFactorState = attachment.dstColorBlendFactor;
+ context.sourceBlendFactorStateAlpha = attachment.srcAlphaBlendFactor;
+ context.sourceBlendFactorState = attachment.srcColorBlendFactor;
+ }
}
void GraphicsPipeline::destroy(const VkAllocationCallbacks* pAllocator)
@@ -30,6 +372,32 @@
return 0;
}
+void GraphicsPipeline::compileShaders(const VkAllocationCallbacks* pAllocator, const VkGraphicsPipelineCreateInfo* pCreateInfo)
+{
+ vertexRoutine = Cast(pCreateInfo->pStages[0].module)->compile(pAllocator);
+ fragmentRoutine = Cast(pCreateInfo->pStages[1].module)->compile(pAllocator);
+}
+
+const sw::Context& GraphicsPipeline::getContext() const
+{
+ return context;
+}
+
+const sw::Rect& GraphicsPipeline::getScissor() const
+{
+ return scissor;
+}
+
+const VkViewport& GraphicsPipeline::getViewport() const
+{
+ return viewport;
+}
+
+const sw::Color<float>& GraphicsPipeline::getBlendConstants() const
+{
+ return blendConstants;
+}
+
ComputePipeline::ComputePipeline(const VkComputePipelineCreateInfo* pCreateInfo, void* mem)
{
}
diff --git a/src/Vulkan/VkPipeline.hpp b/src/Vulkan/VkPipeline.hpp
index 725e109..18327ef 100644
--- a/src/Vulkan/VkPipeline.hpp
+++ b/src/Vulkan/VkPipeline.hpp
@@ -16,6 +16,7 @@
#define VK_PIPELINE_HPP_
#include "VkObject.hpp"
+#include "Device/Renderer.hpp"
namespace vk
{
@@ -44,6 +45,21 @@
#endif
static size_t ComputeRequiredAllocationSize(const VkGraphicsPipelineCreateInfo* pCreateInfo);
+
+ void compileShaders(const VkAllocationCallbacks* pAllocator, const VkGraphicsPipelineCreateInfo* pCreateInfo);
+
+ const sw::Context& getContext() const;
+ const sw::Rect& getScissor() const;
+ const VkViewport& getViewport() const;
+ const sw::Color<float>& getBlendConstants() const;
+
+private:
+ rr::Routine* vertexRoutine;
+ rr::Routine* fragmentRoutine;
+ sw::Context context;
+ sw::Rect scissor;
+ VkViewport viewport;
+ sw::Color<float> blendConstants;
};
class ComputePipeline : public Pipeline, public Object<ComputePipeline, VkPipeline>
diff --git a/src/Vulkan/VkShaderModule.cpp b/src/Vulkan/VkShaderModule.cpp
index 29bce29..4c824a3 100644
--- a/src/Vulkan/VkShaderModule.cpp
+++ b/src/Vulkan/VkShaderModule.cpp
@@ -34,4 +34,10 @@
return pCreateInfo->codeSize;
}
+rr::Routine* ShaderModule::compile(const VkAllocationCallbacks* pAllocator)
+{
+ // FIXME: Compile the code here
+ return nullptr;
+}
+
} // namespace vk
diff --git a/src/Vulkan/VkShaderModule.hpp b/src/Vulkan/VkShaderModule.hpp
index b179cbe..f7a4de7 100644
--- a/src/Vulkan/VkShaderModule.hpp
+++ b/src/Vulkan/VkShaderModule.hpp
@@ -17,6 +17,11 @@
#include "VkObject.hpp"
+namespace rr
+{
+ class Routine;
+}
+
namespace vk
{
@@ -27,6 +32,8 @@
~ShaderModule() = delete;
void destroy(const VkAllocationCallbacks* pAllocator);
+ rr::Routine* compile(const VkAllocationCallbacks* pAllocator);
+
static size_t ComputeRequiredAllocationSize(const VkShaderModuleCreateInfo* pCreateInfo);
private:
diff --git a/src/Vulkan/libVulkan.cpp b/src/Vulkan/libVulkan.cpp
index 2b8f84c..249afe4 100644
--- a/src/Vulkan/libVulkan.cpp
+++ b/src/Vulkan/libVulkan.cpp
@@ -896,6 +896,10 @@
pPipelines[i] = VK_NULL_HANDLE;
errorResult = result;
}
+ else
+ {
+ static_cast<vk::GraphicsPipeline*>(vk::Cast(pPipelines[i]))->compileShaders(pAllocator, &pCreateInfos[i]);
+ }
}
return errorResult;
