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// render.cpp
#include "render.h"
#include "../../source/core/slang-math.h"
namespace renderer_test {
using namespace Slang;
/* static */const Resource::BindFlag::Enum Resource::s_requiredBinding[int(Usage::CountOf)] =
{
BindFlag::VertexBuffer, // VertexBuffer
BindFlag::IndexBuffer, // IndexBuffer
BindFlag::ConstantBuffer, // ConstantBuffer
BindFlag::StreamOutput, // StreamOut
BindFlag::RenderTarget, // RenderTager
BindFlag::DepthStencil, // DepthRead
BindFlag::DepthStencil, // DepthWrite
BindFlag::UnorderedAccess, // UnorderedAccess
BindFlag::PixelShaderResource, // PixelShaderResource
BindFlag::NonPixelShaderResource, // NonPixelShaderResource
BindFlag::Enum(BindFlag::PixelShaderResource | BindFlag::NonPixelShaderResource), // GenericRead
};
/* !!!!!!!!!!!!!!!!!!!!!!!!!!! TextureResource::Size !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
int TextureResource::Size::calcMaxDimension(Type type) const
{
switch (type)
{
case Resource::Type::Texture1D: return this->width;
case Resource::Type::Texture3D: return std::max(std::max(this->width, this->height), this->depth);
case Resource::Type::TextureCube: // fallthru
case Resource::Type::Texture2D:
{
return std::max(this->width, this->height);
}
default: return 0;
}
}
TextureResource::Size TextureResource::Size::calcMipSize(int mipLevel) const
{
Size size;
size.width = TextureResource::calcMipSize(this->width, mipLevel);
size.height = TextureResource::calcMipSize(this->height, mipLevel);
size.depth = TextureResource::calcMipSize(this->depth, mipLevel);
return size;
}
/* !!!!!!!!!!!!!!!!!!!!!!!!! BufferResource::Desc !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
void BufferResource::Desc::setDefaults(Usage initialUsage)
{
if (this->bindFlags == 0)
{
this->bindFlags = Resource::s_requiredBinding[int(initialUsage)];
}
}
/* !!!!!!!!!!!!!!!!!!!!!!!!! TextureResource::Desc !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
int TextureResource::Desc::calcNumMipLevels(Type type) const
{
const int maxDimensionSize = this->size.calcMaxDimension(type);
return (maxDimensionSize > 0) ? (Math::Log2Floor(maxDimensionSize) + 1) : 0;
}
int TextureResource::Desc::calcNumSubResources(Type type) const
{
const int numMipMaps = (this->numMipLevels > 0) ? this->numMipLevels : calcNumMipLevels(type);
const int arrSize = (this->arraySize > 0) ? this->arraySize : 1;
switch (type)
{
case Resource::Type::Texture1D:
case Resource::Type::Texture2D:
{
return numMipMaps * arrSize;
}
case Resource::Type::Texture3D:
{
// can't have arrays of 3d textures
assert(this->arraySize <= 1);
return numMipMaps * this->size.depth;
}
case Resource::Type::TextureCube:
{
// There are 6 faces to a cubemap
return numMipMaps * arrSize * 6;
}
default: return 0;
}
}
void TextureResource::Desc::fixSize(Type type)
{
switch (type)
{
case Resource::Type::Texture1D:
{
this->size.height = 1;
this->size.depth = 1;
break;
}
case Resource::Type::TextureCube:
case Resource::Type::Texture2D:
{
this->size.depth = 1;
break;
}
case Resource::Type::Texture3D:
{
// Can't have an array
this->arraySize = 0;
break;
}
default: break;
}
}
void TextureResource::Desc::setDefaults(Type type, Usage initialUsage)
{
fixSize(type);
if (this->bindFlags == 0)
{
this->bindFlags = Resource::s_requiredBinding[int(initialUsage)];
}
if (this->numMipLevels <= 0)
{
this->numMipLevels = calcNumMipLevels(type);
}
}
int TextureResource::Desc::calcEffectiveArraySize(Type type) const
{
const int arrSize = (this->arraySize > 0) ? this->arraySize : 1;
switch (type)
{
case Resource::Type::Texture1D: // fallthru
case Resource::Type::Texture2D:
{
return arrSize;
}
case Resource::Type::TextureCube: return arrSize * 6;
case Resource::Type::Texture3D: return 1;
default: return 0;
}
}
void TextureResource::Desc::init()
{
this->size.init();
this->format = Format::Unknown;
this->arraySize = 0;
this->numMipLevels = 0;
this->sampleDesc.init();
this->bindFlags = 0;
this->cpuAccessFlags = 0;
}
void TextureResource::Desc::init1D(Format formatIn, int widthIn, int numMipMapsIn)
{
this->size.init(widthIn);
this->format = format;
this->arraySize = 0;
this->numMipLevels = numMipMapsIn;
this->sampleDesc.init();
this->bindFlags = 0;
this->cpuAccessFlags = 0;
}
void TextureResource::Desc::init2D(Format formatIn, int widthIn, int heightIn, int numMipMapsIn)
{
this->size.init(widthIn, heightIn);
this->format = format;
this->arraySize = 0;
this->numMipLevels = numMipMapsIn;
this->sampleDesc.init();
this->bindFlags = 0;
this->cpuAccessFlags = 0;
}
void TextureResource::Desc::init3D(Format formatIn, int widthIn, int heightIn, int depthIn, int numMipMapsIn)
{
this->size.init(widthIn, heightIn, depthIn);
this->format = format;
this->arraySize = 0;
this->numMipLevels = numMipMapsIn;
this->sampleDesc.init();
this->bindFlags = 0;
this->cpuAccessFlags = 0;
}
} // renderer_test
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