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Improved VertexDeclaration class 

Added AttributeUsage_Unused
Improved code and error handling


Former-commit-id: bd0f3755867d38e0f03b282970031fbadc10213e
This commit is contained in:
Lynix 2014-07-08 11:11:11 +02:00
parent 9de90a78e5
commit 8ab69fa3ab
2 changed files with 96 additions and 26 deletions
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2
include/Nazara/Utility/Enums.hpp
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@ -36,6 +36,8 @@ enum nzAttributeType
enum nzAttributeUsage
{
nzAttributeUsage_Unused = -1,
nzAttributeUsage_InstanceData0,
nzAttributeUsage_InstanceData1,
nzAttributeUsage_InstanceData2,

120
src/Nazara/Utility/VertexDeclaration.cpp
View File

@ -4,7 +4,11 @@
#include <Nazara/Utility/VertexDeclaration.hpp>
#include <Nazara/Core/Error.hpp>
#include <Nazara/Core/ErrorFlags.hpp>
#include <Nazara/Core/OffsetOf.hpp>
#include <Nazara/Math/Matrix4.hpp>
#include <Nazara/Utility/Config.hpp>
#include <Nazara/Utility/VertexStruct.hpp>
#include <cstring>
#include <Nazara/Utility/Debug.hpp>
@ -76,6 +80,14 @@ void NzVertexDeclaration::DisableAttribute(nzAttributeUsage usage)
}
#endif
#if NAZARA_UTILITY_SAFE
if (usage == nzAttributeUsage_Unused)
{
NazaraError("Cannot disable \"unused\" attribute");
return;
}
#endif
Attribute& attribute = m_attributes[usage];
if (attribute.enabled)
{
@ -94,14 +106,17 @@ void NzVertexDeclaration::EnableAttribute(nzAttributeUsage usage, nzAttributeTyp
}
#endif
Attribute& attribute = m_attributes[usage];
if (attribute.enabled)
m_stride -= attributeStride[attribute.type];
else
attribute.enabled = true;
if (usage != nzAttributeUsage_Unused)
{
Attribute& attribute = m_attributes[usage];
if (attribute.enabled)
m_stride -= attributeStride[attribute.type];
else
attribute.enabled = true;
attribute.offset = offset;
attribute.type = type;
attribute.offset = offset;
attribute.type = type;
}
m_stride += attributeStride[type];
}
@ -116,6 +131,14 @@ void NzVertexDeclaration::GetAttribute(nzAttributeUsage usage, bool* enabled, nz
}
#endif
#if NAZARA_UTILITY_SAFE
if (usage == nzAttributeUsage_Unused)
{
NazaraError("Cannot get \"unused\" attribute");
return;
}
#endif
const Attribute& attribute = m_attributes[usage];
if (enabled)
@ -174,32 +197,77 @@ unsigned int NzVertexDeclaration::GetAttributeSize(nzAttributeType type)
bool NzVertexDeclaration::Initialize()
{
s_declarations[nzVertexLayout_XY].EnableAttribute(nzAttributeUsage_Position, nzAttributeType_Float2, 0);
try
{
NzErrorFlags flags(nzErrorFlag_Silent | nzErrorFlag_ThrowException);
s_declarations[nzVertexLayout_XY_UV].EnableAttribute(nzAttributeUsage_Position, nzAttributeType_Float2, 0);
s_declarations[nzVertexLayout_XY_UV].EnableAttribute(nzAttributeUsage_TexCoord, nzAttributeType_Float2, 2*sizeof(float));
// Layout : Type
NzVertexDeclaration* declaration;
s_declarations[nzVertexLayout_XYZ].EnableAttribute(nzAttributeUsage_Position, nzAttributeType_Float3, 0);
// nzVertexLayout_XY : NzVertexStruct_XY
declaration = &s_declarations[nzVertexLayout_XY];
declaration->EnableAttribute(nzAttributeUsage_Position, nzAttributeType_Float2, NzOffsetOf(NzVertexStruct_XY, position));
s_declarations[nzVertexLayout_XYZ_Normal].EnableAttribute(nzAttributeUsage_Position, nzAttributeType_Float3, 0);
s_declarations[nzVertexLayout_XYZ_Normal].EnableAttribute(nzAttributeUsage_Normal, nzAttributeType_Float3, 3*sizeof(float));
NazaraAssert(declaration->GetStride() == sizeof(NzVertexStruct_XY), "Invalid stride for declaration NzVertexStruct_XY");
s_declarations[nzVertexLayout_XYZ_Normal_UV].EnableAttribute(nzAttributeUsage_Position, nzAttributeType_Float3, 0);
s_declarations[nzVertexLayout_XYZ_Normal_UV].EnableAttribute(nzAttributeUsage_Normal, nzAttributeType_Float3, 3*sizeof(float));
s_declarations[nzVertexLayout_XYZ_Normal_UV].EnableAttribute(nzAttributeUsage_TexCoord, nzAttributeType_Float2, (3+3)*sizeof(float));
// nzVertexLayout_XY_UV : NzVertexStruct_XY_UV
declaration = &s_declarations[nzVertexLayout_XY_UV];
declaration->EnableAttribute(nzAttributeUsage_Position, nzAttributeType_Float2, NzOffsetOf(NzVertexStruct_XY_UV, position));
declaration->EnableAttribute(nzAttributeUsage_TexCoord, nzAttributeType_Float2, NzOffsetOf(NzVertexStruct_XY_UV, uv));
s_declarations[nzVertexLayout_XYZ_Normal_UV_Tangent].EnableAttribute(nzAttributeUsage_Position, nzAttributeType_Float3, 0);
s_declarations[nzVertexLayout_XYZ_Normal_UV_Tangent].EnableAttribute(nzAttributeUsage_Normal, nzAttributeType_Float3, 3*sizeof(float));
s_declarations[nzVertexLayout_XYZ_Normal_UV_Tangent].EnableAttribute(nzAttributeUsage_TexCoord, nzAttributeType_Float2, (3+3)*sizeof(float));
s_declarations[nzVertexLayout_XYZ_Normal_UV_Tangent].EnableAttribute(nzAttributeUsage_Tangent, nzAttributeType_Float3, (3+3+2)*sizeof(float));
NazaraAssert(declaration->GetStride() == sizeof(NzVertexStruct_XY_UV), "Invalid stride for declaration nzVertexLayout_XY_UV");
s_declarations[nzVertexLayout_XYZ_UV].EnableAttribute(nzAttributeUsage_Position, nzAttributeType_Float3, 0);
s_declarations[nzVertexLayout_XYZ_UV].EnableAttribute(nzAttributeUsage_TexCoord, nzAttributeType_Float2, 3*sizeof(float));
// nzVertexLayout_XYZ : NzVertexStruct_XYZ
declaration = &s_declarations[nzVertexLayout_XYZ];
declaration->EnableAttribute(nzAttributeUsage_Position, nzAttributeType_Float3, NzOffsetOf(NzVertexStruct_XYZ, position));
s_declarations[nzVertexLayout_Matrix4].EnableAttribute(nzAttributeUsage_InstanceData0, nzAttributeType_Float4, 0*4*sizeof(float));
s_declarations[nzVertexLayout_Matrix4].EnableAttribute(nzAttributeUsage_InstanceData1, nzAttributeType_Float4, 1*4*sizeof(float));
s_declarations[nzVertexLayout_Matrix4].EnableAttribute(nzAttributeUsage_InstanceData2, nzAttributeType_Float4, 2*4*sizeof(float));
s_declarations[nzVertexLayout_Matrix4].EnableAttribute(nzAttributeUsage_InstanceData3, nzAttributeType_Float4, 3*4*sizeof(float));
NazaraAssert(declaration->GetStride() == sizeof(NzVertexStruct_XYZ), "Invalid stride for declaration nzVertexLayout_XYZ");
// nzVertexLayout_XYZ_Normal : NzVertexStruct_XYZ_Normal
declaration = &s_declarations[nzVertexLayout_XYZ_Normal];
declaration->EnableAttribute(nzAttributeUsage_Position, nzAttributeType_Float3, NzOffsetOf(NzVertexStruct_XYZ_Normal, position));
declaration->EnableAttribute(nzAttributeUsage_Normal, nzAttributeType_Float3, NzOffsetOf(NzVertexStruct_XYZ_Normal, normal));
NazaraAssert(declaration->GetStride() == sizeof(NzVertexStruct_XYZ_Normal), "Invalid stride for declaration nzVertexLayout_XYZ_Normal");
// nzVertexLayout_XYZ_Normal_UV : NzVertexStruct_XYZ_Normal_UV
declaration = &s_declarations[nzVertexLayout_XYZ_Normal_UV];
declaration->EnableAttribute(nzAttributeUsage_Position, nzAttributeType_Float3, NzOffsetOf(NzVertexStruct_XYZ_Normal_UV, position));
declaration->EnableAttribute(nzAttributeUsage_Normal, nzAttributeType_Float3, NzOffsetOf(NzVertexStruct_XYZ_Normal_UV, normal));
declaration->EnableAttribute(nzAttributeUsage_TexCoord, nzAttributeType_Float2, NzOffsetOf(NzVertexStruct_XYZ_Normal_UV, uv));
NazaraAssert(declaration->GetStride() == sizeof(NzVertexStruct_XYZ_Normal_UV), "Invalid stride for declaration nzVertexLayout_XYZ_Normal_UV");
// nzVertexLayout_XYZ_Normal_UV_Tangent : NzVertexStruct_XYZ_Normal_UV_Tangent
declaration = &s_declarations[nzVertexLayout_XYZ_Normal_UV_Tangent];
declaration->EnableAttribute(nzAttributeUsage_Position, nzAttributeType_Float3, NzOffsetOf(NzVertexStruct_XYZ_Normal_UV_Tangent, position));
declaration->EnableAttribute(nzAttributeUsage_Normal, nzAttributeType_Float3, NzOffsetOf(NzVertexStruct_XYZ_Normal_UV_Tangent, normal));
declaration->EnableAttribute(nzAttributeUsage_TexCoord, nzAttributeType_Float2, NzOffsetOf(NzVertexStruct_XYZ_Normal_UV_Tangent, uv));
declaration->EnableAttribute(nzAttributeUsage_Tangent, nzAttributeType_Float3, NzOffsetOf(NzVertexStruct_XYZ_Normal_UV_Tangent, tangent));
NazaraAssert(declaration->GetStride() == sizeof(NzVertexStruct_XYZ_Normal_UV_Tangent), "Invalid stride for declaration nzVertexLayout_XYZ_Normal_UV_Tangent");
// nzVertexLayout_XYZ_UV : NzVertexStruct_XYZ_UV
declaration = &s_declarations[nzVertexLayout_XYZ_UV];
declaration->EnableAttribute(nzAttributeUsage_Position, nzAttributeType_Float3, NzOffsetOf(NzVertexStruct_XYZ_UV, position));
declaration->EnableAttribute(nzAttributeUsage_TexCoord, nzAttributeType_Float2, NzOffsetOf(NzVertexStruct_XYZ_UV, uv));
NazaraAssert(declaration->GetStride() == sizeof(NzVertexStruct_XYZ_UV), "Invalid stride for declaration nzVertexLayout_XYZ_UV");
// nzVertexLayout_Matrix4 : NzMatrix4f
declaration = &s_declarations[nzVertexLayout_Matrix4];
declaration->EnableAttribute(nzAttributeUsage_InstanceData0, nzAttributeType_Float4, NzOffsetOf(NzMatrix4f, m11));
declaration->EnableAttribute(nzAttributeUsage_InstanceData1, nzAttributeType_Float4, NzOffsetOf(NzMatrix4f, m21));
declaration->EnableAttribute(nzAttributeUsage_InstanceData2, nzAttributeType_Float4, NzOffsetOf(NzMatrix4f, m31));
declaration->EnableAttribute(nzAttributeUsage_InstanceData3, nzAttributeType_Float4, NzOffsetOf(NzMatrix4f, m41));
NazaraAssert(declaration->GetStride() == sizeof(NzMatrix4f), "Invalid stride for declaration nzVertexLayout_Matrix4");
}
catch (const std::exception& e)
{
NazaraError("Failed to initialize vertex declaration: " + NzString(e.what()));
return false;
}
return true;
}