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NazaraEngine/include/Nazara/Renderer/RenderStates.inl
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2016-08-10 23:17:25 +02:00

146 lines
4.7 KiB
C++

// Copyright (C) 2015 Jérôme Leclercq
// This file is part of the "Nazara Engine - Renderer module"
// For conditions of distribution and use, see copyright notice in Config.hpp
#include <Nazara/Renderer/RenderStates.hpp>
#include <Nazara/Core/Algorithm.hpp>
#include <Nazara/Math/Algorithm.hpp>
#include <functional>
#include <Nazara/Renderer/Debug.hpp>
namespace Nz
{
bool operator==(const RenderStates& lhs, const RenderStates& rhs)
{
#define NazaraRenderStateMember(field) if (lhs.field != rhs.field) return false
#define NazaraRenderStateBoolMember NazaraRenderStateMember
#define NazaraRenderStateFloatMember(field, maxDiff) if (!NumberEquals(lhs.field, rhs.field, maxDiff)) return false
NazaraRenderStateBoolMember(blending);
NazaraRenderStateBoolMember(colorWrite);
NazaraRenderStateBoolMember(depthBuffer);
NazaraRenderStateBoolMember(faceCulling);
NazaraRenderStateBoolMember(scissorTest);
NazaraRenderStateBoolMember(stencilTest);
if (lhs.depthBuffer)
NazaraRenderStateBoolMember(depthWrite);
NazaraRenderStateMember(faceFilling);
if (lhs.blending) //< Remember, at this time we know lhs.blending == rhs.blending
{
NazaraRenderStateMember(dstBlend);
NazaraRenderStateMember(srcBlend);
}
if (lhs.depthBuffer)
NazaraRenderStateMember(depthFunc);
if (lhs.faceCulling)
NazaraRenderStateMember(cullingSide);
if (lhs.stencilTest)
{
NazaraRenderStateMember(stencilCompare.back);
NazaraRenderStateMember(stencilCompare.front);
NazaraRenderStateMember(stencilCompareMask.back);
NazaraRenderStateMember(stencilCompareMask.front);
NazaraRenderStateMember(stencilDepthFail.back);
NazaraRenderStateMember(stencilDepthFail.front);
NazaraRenderStateMember(stencilFail.back);
NazaraRenderStateMember(stencilFail.front);
NazaraRenderStateMember(stencilPass.back);
NazaraRenderStateMember(stencilPass.front);
NazaraRenderStateMember(stencilReference.back);
NazaraRenderStateMember(stencilReference.front);
NazaraRenderStateMember(stencilWriteMask.back);
NazaraRenderStateMember(stencilWriteMask.front);
}
NazaraRenderStateFloatMember(lineWidth, 0.001f);
NazaraRenderStateFloatMember(pointSize, 0.001f);
#undef NazaraRenderStateMember
#undef NazaraRenderStateBoolMember
#undef NazaraRenderStateFloatMember
return true;
}
}
namespace std
{
template<>
struct hash<Nz::RenderStates>
{
size_t operator()(const Nz::RenderStates& pipelineInfo) const
{
std::size_t seed = 0;
Nz::UInt8 parameterHash = 0;
Nz::UInt8 parameterIndex = 0;
#define NazaraRenderStateBool(member) parameterHash |= ((pipelineInfo.member) ? 1U : 0U) << (parameterIndex++)
#define NazaraRenderStateBoolDep(dependency, member) parameterHash |= ((pipelineInfo.dependency && pipelineInfo.member) ? 1U : 0U) << (parameterIndex++)
#define NazaraRenderStateEnum(member) Nz::HashCombine(seed, static_cast<Nz::UInt8>(pipelineInfo.member))
#define NazaraRenderStateFloat(member, maxDiff) Nz::HashCombine(seed, std::floor(pipelineInfo.member / maxDiff) * maxDiff)
NazaraRenderStateBool(blending);
NazaraRenderStateBool(colorWrite);
NazaraRenderStateBool(depthBuffer);
NazaraRenderStateBool(faceCulling);
NazaraRenderStateBool(scissorTest);
NazaraRenderStateBool(stencilTest);
NazaraRenderStateBoolDep(depthBuffer, depthWrite);
NazaraRenderStateEnum(faceFilling);
if (pipelineInfo.blending) //< Remember, at this time we know lhs.blending == rhs.blending
{
NazaraRenderStateEnum(dstBlend);
NazaraRenderStateEnum(srcBlend);
}
if (pipelineInfo.depthBuffer)
NazaraRenderStateEnum(depthFunc);
if (pipelineInfo.faceCulling)
NazaraRenderStateEnum(cullingSide);
if (pipelineInfo.stencilTest)
{
NazaraRenderStateEnum(stencilCompare.back);
NazaraRenderStateEnum(stencilCompare.front);
NazaraRenderStateEnum(stencilCompareMask.back);
NazaraRenderStateEnum(stencilCompareMask.front);
NazaraRenderStateEnum(stencilDepthFail.back);
NazaraRenderStateEnum(stencilDepthFail.front);
NazaraRenderStateEnum(stencilFail.back);
NazaraRenderStateEnum(stencilFail.front);
NazaraRenderStateEnum(stencilPass.back);
NazaraRenderStateEnum(stencilPass.front);
NazaraRenderStateEnum(stencilReference.back);
NazaraRenderStateEnum(stencilReference.front);
NazaraRenderStateEnum(stencilWriteMask.back);
NazaraRenderStateEnum(stencilWriteMask.front);
}
NazaraRenderStateFloat(lineWidth, 0.001f);
NazaraRenderStateFloat(pointSize, 0.001f);
#undef NazaraRenderStateBool
#undef NazaraRenderStateBoolDep
#undef NazaraRenderStateEnum
#undef NazaraRenderStateFloat
Nz::HashCombine(seed, parameterHash);
return seed;
}
};
}
#include <Nazara/Renderer/DebugOff.hpp>