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#pragma once
#include "core/slang-basic.h"
#include "renderer-shared.h"
#include "slang-com-ptr.h"
#include "slang-gfx.h"
namespace gfx
{
enum class CommandName
{
SetPipelineState,
BindRootShaderObject,
SetFramebuffer,
ClearFrame,
SetViewports,
SetScissorRects,
SetPrimitiveTopology,
SetVertexBuffers,
SetIndexBuffer,
Draw,
DrawIndexed,
DrawInstanced,
DrawIndexedInstanced,
SetStencilReference,
DispatchCompute,
UploadBufferData,
CopyBuffer,
WriteTimestamp,
};
const uint8_t kMaxCommandOperands = 5;
struct Command
{
CommandName name;
uint32_t operands[kMaxCommandOperands];
Command() = default;
Command(CommandName inName, uint32_t op)
: name(inName)
{
operands[0] = op;
}
Command(CommandName inName, uint32_t op1, uint32_t op2)
: name(inName)
{
operands[0] = op1;
operands[1] = op2;
}
Command(CommandName inName, uint32_t op1, uint32_t op2, uint32_t op3)
: name(inName)
{
operands[0] = op1;
operands[1] = op2;
operands[2] = op3;
}
Command(CommandName inName, uint32_t op1, uint32_t op2, uint32_t op3, uint32_t op4)
: name(inName)
{
operands[0] = op1;
operands[1] = op2;
operands[2] = op3;
operands[3] = op4;
}
Command(
CommandName inName,
uint32_t op1,
uint32_t op2,
uint32_t op3,
uint32_t op4,
uint32_t op5)
: name(inName)
{
operands[0] = op1;
operands[1] = op2;
operands[2] = op3;
operands[3] = op4;
operands[4] = op5;
}
};
class CommandWriter
{
public:
Slang::List<Command> m_commands;
Slang::List<Slang::RefPtr<Slang::RefObject>> m_objects;
Slang::List<uint8_t> m_data;
bool m_hasWriteTimestamps = false;
public:
void clear()
{
m_commands.clear();
for (auto& obj : m_objects)
obj = nullptr;
m_objects.clear();
m_data.clear();
m_hasWriteTimestamps = false;
}
// Copies user data into `m_data` buffer and returns the offset to retrieve the data.
Offset encodeData(const void* data, Size size)
{
Offset offset = (Offset)m_data.getCount();
m_data.setCount(m_data.getCount() + size);
memcpy(m_data.getBuffer() + offset, data, size);
return offset;
}
Offset encodeObject(Slang::RefObject* obj)
{
Offset offset = (Offset)m_objects.getCount();
m_objects.add(obj);
return offset;
}
template<typename T>
T* getObject(uint32_t offset)
{
return static_cast<T*>(m_objects[offset].Ptr());
}
template<typename T>
T* getData(Offset offset)
{
return reinterpret_cast<T*>(m_data.getBuffer() + offset);
}
void setPipelineState(IPipelineState* state)
{
auto offset = encodeObject(static_cast<PipelineStateBase*>(state));
m_commands.add(Command(CommandName::SetPipelineState, (uint32_t)offset));
}
void bindRootShaderObject(IShaderObject* object)
{
auto rootOffset = encodeObject(static_cast<ShaderObjectBase*>(object));
m_commands.add(Command(CommandName::BindRootShaderObject, (uint32_t)rootOffset));
}
void uploadBufferData(IBufferResource* buffer, Offset offset, Size size, void* data)
{
auto bufferOffset = encodeObject(static_cast<BufferResource*>(buffer));
auto dataOffset = encodeData(data, size);
m_commands.add(Command(
CommandName::UploadBufferData,
(uint32_t)bufferOffset,
(uint32_t)offset,
(uint32_t)size,
(uint32_t)dataOffset));
}
void copyBuffer(
IBufferResource* dst,
Offset dstOffset,
IBufferResource* src,
Offset srcOffset,
Size size)
{
auto dstBuffer = encodeObject(static_cast<BufferResource*>(dst));
auto srcBuffer = encodeObject(static_cast<BufferResource*>(src));
m_commands.add(Command(
CommandName::CopyBuffer,
(uint32_t)dstBuffer,
(uint32_t)dstOffset,
(uint32_t)srcBuffer,
(uint32_t)srcOffset,
(uint32_t)size));
}
void setFramebuffer(IFramebuffer* frameBuffer)
{
auto framebufferOffset = encodeObject(static_cast<FramebufferBase*>(frameBuffer));
m_commands.add(Command(CommandName::SetFramebuffer, (uint32_t)framebufferOffset));
}
void clearFrame(uint32_t colorBufferMask, bool clearDepth, bool clearStencil)
{
m_commands.add(Command(
CommandName::ClearFrame,
colorBufferMask,
clearDepth ? 1 : 0,
clearStencil ? 1 : 0));
}
void setViewports(GfxCount count, const Viewport* viewports)
{
auto offset = encodeData(viewports, sizeof(Viewport) * count);
m_commands.add(Command(CommandName::SetViewports, (uint32_t)count, (uint32_t)offset));
}
void setScissorRects(GfxCount count, const ScissorRect* scissors)
{
auto offset = encodeData(scissors, sizeof(ScissorRect) * count);
m_commands.add(Command(CommandName::SetScissorRects, (uint32_t)count, (uint32_t)offset));
}
void setPrimitiveTopology(PrimitiveTopology topology)
{
m_commands.add(Command(CommandName::SetPrimitiveTopology, (uint32_t)topology));
}
void setVertexBuffers(
GfxIndex startSlot,
GfxCount slotCount,
IBufferResource* const* buffers,
const Offset* offsets)
{
Offset bufferOffset = 0;
for (GfxCount i = 0; i < slotCount; i++)
{
auto offset = encodeObject(static_cast<BufferResource*>(buffers[i]));
if (i == 0)
bufferOffset = offset;
}
auto offsetsOffset = encodeData(offsets, sizeof(Size) * slotCount);
m_commands.add(Command(
CommandName::SetVertexBuffers,
(uint32_t)startSlot,
(uint32_t)slotCount,
(uint32_t)bufferOffset,
(uint32_t)offsetsOffset));
}
void setIndexBuffer(IBufferResource* buffer, Format indexFormat, Offset offset)
{
auto bufferOffset = encodeObject(static_cast<BufferResource*>(buffer));
m_commands.add(Command(
CommandName::SetIndexBuffer,
(uint32_t)bufferOffset,
(uint32_t)indexFormat,
(uint32_t)offset));
}
void draw(GfxCount vertexCount, GfxIndex startVertex)
{
m_commands.add(Command(CommandName::Draw, (uint32_t)vertexCount, (uint32_t)startVertex));
}
void drawIndexed(GfxCount indexCount, GfxIndex startIndex, GfxIndex baseVertex)
{
m_commands.add(Command(
CommandName::DrawIndexed,
(uint32_t)indexCount,
(uint32_t)startIndex,
(uint32_t)baseVertex));
}
void drawInstanced(
GfxCount vertexCount,
GfxCount instanceCount,
GfxIndex startVertex,
GfxIndex startInstanceLocation)
{
m_commands.add(Command(
CommandName::DrawInstanced,
(uint32_t)vertexCount,
(uint32_t)instanceCount,
(uint32_t)startVertex,
(uint32_t)startInstanceLocation));
}
void drawIndexedInstanced(
GfxCount indexCount,
GfxCount instanceCount,
GfxIndex startIndexLocation,
GfxIndex baseVertexLocation,
GfxIndex startInstanceLocation)
{
m_commands.add(Command(
CommandName::DrawIndexedInstanced,
(uint32_t)indexCount,
(uint32_t)instanceCount,
(uint32_t)startIndexLocation,
(uint32_t)baseVertexLocation,
(uint32_t)startInstanceLocation));
}
void setStencilReference(uint32_t referenceValue)
{
m_commands.add(Command(CommandName::SetStencilReference, referenceValue));
}
void dispatchCompute(int x, int y, int z)
{
m_commands.add(
Command(CommandName::DispatchCompute, (uint32_t)x, (uint32_t)y, (uint32_t)z));
}
void writeTimestamp(IQueryPool* pool, GfxIndex index)
{
auto poolOffset = encodeObject(static_cast<QueryPoolBase*>(pool));
m_commands.add(Command(CommandName::WriteTimestamp, (uint32_t)poolOffset, (uint32_t)index));
m_hasWriteTimestamps = true;
}
};
} // namespace gfx
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