Talk:RpGeometry - Revision history

The hero: The hero moved page Talk:Geometry (RW Section) to Talk:RpGeometry: Restructuring RW pages to be less stream-oriented

2016-06-07T17:15:42Z

The hero moved page Talk:Geometry (RW Section) to Talk:RpGeometry: Restructuring RW pages to be less stream-oriented

Aschratt: /* About the attribute buffer */

2011-04-21T11:59:57Z

‎About the attribute buffer

Aschratt at 11:59, 21 April 2011

2011-04-21T11:59:49Z

Aschratt at 15:52, 8 January 2011

2011-01-08T15:52:02Z

Aphex01: correcting myself...

2011-01-07T21:41:44Z

correcting myself...

Aphex01 at 21:40, 7 January 2011

2011-01-07T21:40:10Z

Aphex01: Created page with 'Under the "Structure" heading, you have an extra 2 byte value added which doesn't exist in the PC version of a DFF file, check for yourself. Should this be changed? Or maybe this…'

2011-01-07T21:34:28Z

Created page with 'Under the "Structure" heading, you have an extra 2 byte value added which doesn't exist in the PC version of a DFF file, check for yourself. Should this be changed? Or maybe this…'

New page

Under the "Structure" heading, you have an extra 2 byte value added which doesn't exist in the PC version of a DFF file, check for yourself. Should this be changed? Or maybe this is for another machine, such as the PS2?

@@ Line 17: / Line 17: @@
 Attributes are typically used to define different optimized meshes (in DirectX). GTA uses them to group faces by their material index. The following C++ pseudocode shows how to use attributes with [http://msdn.microsoft.com/en-us/library/bb147196%28v=vs.85%29.aspx DirectX meshes]:
-<source lang="c">// This method creates an IDirect3DMesh9 interface and buffers the RWGeometry data to it.
+<source lang="cpp">// This method creates an IDirect3DMesh9 interface and buffers the RWGeometry data to it.
 HRESULT RWGeometry::Buffer(LPDIRECT3DDEVICE9* pDevice)
+{

← Older revision		Revision as of 11:59, 21 April 2011
Line 11:		Line 11:

	:You are right, I somehow messed up the size of the data. Number of UV coordinates and unknown values are only bytes, not words! Thank you. --{{#if:Aschratt\|[[User:Aschratt\|Aschratt]]}} - [http://www.aschratt.com oO] 15:52, 8 January 2011 (UTC)		:You are right, I somehow messed up the size of the data. Number of UV coordinates and unknown values are only bytes, not words! Thank you. --{{#if:Aschratt\|[[User:Aschratt\|Aschratt]]}} - [http://www.aschratt.com oO] 15:52, 8 January 2011 (UTC)
		+
		+
		+	== About the attribute buffer ==
		+
		+	Attributes are typically used to define different optimized meshes (in DirectX). GTA uses them to group faces by their material index. The following C++ pseudocode shows how to use attributes with [http://msdn.microsoft.com/en-us/library/bb147196%28v=vs.85%29.aspx DirectX meshes]:
		+
		+	<source lang="c">// This method creates an IDirect3DMesh9 interface and buffers the RWGeometry data to it.
		+	HRESULT RWGeometry::Buffer(LPDIRECT3DDEVICE9* pDevice)
		+	{
		+	// Get the number of faces in general from the BinMeshPLG
		+	// The vertex count is defined inside the geometry section itself.
		+	// Mesh declaration: LPD3DXMESH m_pMesh;
		+	HRESULT hRes = D3DXCreateMeshFVF(m_pExtension->GetBinMeshPLG()->GetFaceCount(), m_dwVertexCount,
		+	D3DXMESH_MANAGED, CVertex::FVFFlags, pDevice,
		+	&m_pMesh);
		+
		+	// ... exception handling in here ...
		+
		+	// ... Setup vertices in here ...
		+
		+	m_pMesh->LockVertexBuffer(0, &pData);
		+	memcpy(pData, pVertices, (sizeof(CVertex) * dwVertices));
		+	m_pMesh->UnlockVertexBuffer();
		+
		+	// ... Setup indices in here ...
		+
		+	m_pMesh->LockIndexBuffer(0, &pData);
		+	memcpy(pData, pIndices, (sizeof(SHORT) * dwIndices));
		+	m_pMesh->UnlockIndexBuffer();
		+
		+	// Setup attributes
		+	DWORD* pAttributesBuffer;
		+	m_pMesh->LockAttributeBuffer(0, &pAttributes);
		+	memcpy(pAttributesBuffer, pAttributes, (sizeof(DWORD) * dwAttributes));
		+	m_pMesh->UnlockAttributeBuffer();
		+
		+	// That's it.
		+	return S_OK;
		+	}
		+
		+	// Each face is now connected to an attribute and each attribute represents one subset.
		+	// The number of subsets represents the number of material splits inside the BinMeshPLG section
		+	void RWGeometry::Render(LPDIRECT3DDEVICE9* pDevice)
		+	{
		+	for (DWORD dwSubset(0); dwSubset < m_pExtension->GetBinMeshPLG()->GetMaterialSplits(); ++dwSubset)
		+	{
		+	m_pMesh->DrawSubset(dwSubset);
		+	}
		+	}</source>
		+	--{{#if:Aschratt\|[[User:Aschratt\|Aschratt]]}} - [http://www.aschratt.com oO] 11:59, 21 April 2011 (UTC)

← Older revision		Revision as of 15:52, 8 January 2011
Line 9:		Line 9:

	This is confirmed for GTA:SA DFF files on the PC.		This is confirmed for GTA:SA DFF files on the PC.
		+
		+	:You are right, I somehow messed up the size of the data. Number of UV coordinates and unknown values are only bytes, not words! Thank you. --{{#if:Aschratt\|[[User:Aschratt\|Aschratt]]}} - [http://www.aschratt.com oO] 15:52, 8 January 2011 (UTC)

@@ Line 2: / Line 2: @@
 Under the "Structure" heading, you have an extra 2 byte value added which doesn't exist in the PC version of a DFF file, check for yourself. Should this be changed? Or maybe this is for another machine, such as the PS2? Here's the way I see the first structure.
-b - WORD   - Flags (See [[Geometry (RW Section)#Flags|below]])
+b - Flags
-b - WORD   - Unknown (usually 0 and 1 on PS2)
+b - Unknown
-b - DWORD  - Triangle count
+b - Triangle count
-b - DWORD  - Vertex count
+b - Vertex count
-b - DWORD  - Morph Target Count
+b - Morph Target Count

← Older revision		Revision as of 21:40, 7 January 2011
Line 1:		Line 1:
−	Under the "Structure" heading, you have an extra 2 byte value added which doesn't exist in the PC version of a DFF file, check for yourself. Should this be changed? Or maybe this is for another machine, such as the PS2?	+	== Possible incorrect structure ==
		+	Under the "Structure" heading, you have an extra 2 byte value added which doesn't exist in the PC version of a DFF file, check for yourself. Should this be changed? Or maybe this is for another machine, such as the PS2? Here's the way I see the first structure.
		+
		+	2b - WORD - Flags (See [[Geometry (RW Section)#Flags\|below]])
		+	2b - WORD - Unknown (usually 0 and 1 on PS2)
		+	4b - DWORD - Triangle count
		+	4b - DWORD - Vertex count
		+	4b - DWORD - Morph Target Count

← Older revision	Revision as of 17:15, 7 June 2016
(No difference)