librw/src/d3d9.cpp

#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cassert>

#include <new>

#include "rwbase.h"
#include "rwplugin.h"
#include "rwpipeline.h"
#include "rwobjects.h"
#include "rwd3d.h"
#include "rwd3d9.h"

using namespace std;

namespace rw {
namespace d3d9 {
using namespace d3d;

// TODO: move to header, but not as #define
#ifndef RW_D3D9
#define D3DDECL_END() {0xFF,0,D3DDECLTYPE_UNUSED,0,0,0}
#endif

#define NUMDECLELT 12

void*
createVertexDeclaration(VertexElement *elements)
{
#ifdef RW_D3D9
	IDirect3DVertexDeclaration9 *decl = 0;
	device->CreateVertexDeclaration((D3DVERTEXELEMENT9*)elements, &decl);
	return decl;
#else
	int n = 0;
	VertexElement *e = (VertexElement*)elements;
	while(e[n++].stream != 0xFF)
		;
	e = (VertexElement*)new uint8[n*sizeof(VertexElement)];
	memcpy(e, elements, n*sizeof(VertexElement));
	return e;
#endif
}

uint32
getDeclaration(void *declaration, VertexElement *elements)
{
#ifdef RW_D3D9
	IDirect3DVertexDeclaration9 *decl = (IDirect3DVertexDeclaration9*)declaration;
	UINT numElt;
	decl->GetDeclaration((D3DVERTEXELEMENT9*)elements, &numElt);
	return numElt;
#else
	int n = 0;
	VertexElement *e = (VertexElement*)declaration;
	while(e[n++].stream != 0xFF)
		;
	if(elements)
		memcpy(elements, declaration, n*sizeof(VertexElement));
	return n;
#endif
}


void*
destroyNativeData(void *object, int32, int32)
{
	Geometry *geometry = (Geometry*)object;
	assert(geometry->instData != NULL);
	assert(geometry->instData->platform == PLATFORM_D3D9);
	InstanceDataHeader *header =
		(InstanceDataHeader*)geometry->instData;
	geometry->instData = NULL;
	deleteObject(header->vertexDeclaration);
	deleteObject(header->indexBuffer);
	deleteObject(header->vertexStream[0].vertexBuffer);
	deleteObject(header->vertexStream[1].vertexBuffer);
	delete[] header->inst;
	delete header;
	return object;
}

void
readNativeData(Stream *stream, int32, void *object, int32, int32)
{
	Geometry *geometry = (Geometry*)object;
	uint32 vers;
	assert(findChunk(stream, ID_STRUCT, NULL, &vers));
	assert(stream->readU32() == PLATFORM_D3D9);
	InstanceDataHeader *header = new InstanceDataHeader;
	geometry->instData = header;
	header->platform = PLATFORM_D3D9;

	int32 size = stream->readI32();
	uint8 *data = new uint8[size];
	stream->read(data, size);
	uint8 *p = data;
	header->serialNumber = *(uint32*)p; p += 4;
	header->numMeshes = *(uint32*)p; p += 4;
	header->indexBuffer = NULL; p += 4;
	header->primType = *(uint32*)p; p += 4;
	p += 16*2;	// skip vertex streams, they're repeated with the vertex buffers
	header->useOffsets = *(bool32*)p; p += 4;
	header->vertexDeclaration = NULL; p += 4;
	header->totalNumIndex = *(uint32*)p; p += 4;
	header->totalNumVertex = *(uint32*)p; p += 4;
	header->inst = new InstanceData[header->numMeshes];

	InstanceData *inst = header->inst;
	for(uint32 i = 0; i < header->numMeshes; i++){
		inst->numIndex = *(uint32*)p; p += 4;
		inst->minVert = *(uint32*)p; p += 4;
		uint32 matid = *(uint32*)p; p += 4;
		inst->material = geometry->materialList[matid];
		inst->vertexAlpha = *(bool32*)p; p += 4;
		inst->vertexShader = NULL; p += 4;
		inst->baseIndex = 0; p += 4;
		inst->numVertices = *(uint32*)p; p += 4;
		inst->startIndex = *(uint32*)p; p += 4;
		inst->numPrimitives = *(uint32*)p; p += 4;
		inst++;
	}

	VertexElement elements[NUMDECLELT];
	uint32 numDeclarations = stream->readU32();
	stream->read(elements, numDeclarations*8);
	header->vertexDeclaration = createVertexDeclaration(elements);

	header->indexBuffer = createIndexBuffer(header->totalNumIndex*2);
	uint16 *indices = lockIndices(header->indexBuffer, 0, 0, 0);
	stream->read(indices, 2*header->totalNumIndex);
	unlockIndices(header->indexBuffer);

	VertexStream *s;
	p = data;
	for(int i = 0; i < 2; i++){
		stream->read(p, 16);
		s = &header->vertexStream[i];
		s->vertexBuffer = (void*)*(uint32*)p; p += 4;
		s->offset = 0; p += 4;
		s->stride = *(uint32*)p; p += 4;
		s->geometryFlags = *(uint16*)p; p += 2;
		s->managed = *p++;
		s->dynamicLock = *p++;

		if(s->vertexBuffer == NULL)
			continue;
		// TODO: unset managed flag when using morph targets.
		//       also uses different buffer type and locks differently
		s->vertexBuffer = createVertexBuffer(s->stride*header->totalNumVertex, 0, D3DPOOL_MANAGED);
		uint8 *verts = lockVertices(s->vertexBuffer, 0, 0, D3DLOCK_NOSYSLOCK);
		stream->read(verts, s->stride*header->totalNumVertex);
		unlockVertices(s->vertexBuffer);
	}

	// TODO: somehow depends on number of streams used (baseIndex = minVert when more than one)
	inst = header->inst;
	for(uint32 i = 0; i < header->numMeshes; i++){
		inst->baseIndex = inst->minVert + header->vertexStream[0].offset / header->vertexStream[0].stride;
		inst++;
	}

	delete[] data;
}

void
writeNativeData(Stream *stream, int32 len, void *object, int32, int32)
{
	Geometry *geometry = (Geometry*)object;
	writeChunkHeader(stream, ID_STRUCT, len-12);
	assert(geometry->instData != NULL);
	assert(geometry->instData->platform == PLATFORM_D3D9);
	stream->writeU32(PLATFORM_D3D9);
	InstanceDataHeader *header = (InstanceDataHeader*)geometry->instData;
	int32 size = 64 + geometry->meshHeader->numMeshes*36;
	uint8 *data = new uint8[size];
	stream->writeI32(size);

	uint8 *p = data;
	*(uint32*)p = header->serialNumber; p += 4;
	*(uint32*)p = header->numMeshes; p += 4;
	p += 4;		// skip index buffer
	*(uint32*)p = header->primType; p += 4;
	p += 16*2;	// skip vertex streams, they're repeated with the vertex buffers
	*(bool32*)p = header->useOffsets; p += 4;
	p += 4;		// skip vertex declaration
	*(uint32*)p = header->totalNumIndex; p += 4;
	*(uint32*)p = header->totalNumVertex; p += 4;

	InstanceData *inst = header->inst;
	for(uint32 i = 0; i < header->numMeshes; i++){
		*(uint32*)p = inst->numIndex; p += 4;
		*(uint32*)p = inst->minVert; p += 4;
		int32 matid = findPointer(inst->material, (void**)geometry->materialList, geometry->numMaterials);
		*(int32*)p = matid; p += 4;
		*(bool32*)p = inst->vertexAlpha; p += 4;
		*(uint32*)p = 0; p += 4;		// vertex shader
		*(uint32*)p = inst->baseIndex; p += 4;	// not used but meh...
		*(uint32*)p = inst->numVertices; p += 4;
		*(uint32*)p = inst->startIndex; p += 4;
		*(uint32*)p = inst->numPrimitives; p += 4;
		inst++;
	}
	stream->write(data, size);

	VertexElement elements[NUMDECLELT];
	uint32 numElt = getDeclaration(header->vertexDeclaration, elements);
	stream->writeU32(numElt);
	stream->write(elements, 8*numElt);

	uint16 *indices = lockIndices(header->indexBuffer, 0, 0, 0);
	stream->write(indices, 2*header->totalNumIndex);
	unlockIndices(header->indexBuffer);

	VertexStream *s;
	for(int i = 0; i < 2; i++){
		s = &header->vertexStream[i];
		p = data;
		*(uint32*)p = s->vertexBuffer ? 0xbadeaffe : 0; p += 4;
		*(uint32*)p = s->offset; p += 4;
		*(uint32*)p = s->stride; p += 4;
		*(uint16*)p = s->geometryFlags; p += 2;
		*p++ = s->managed;
		*p++ = s->dynamicLock;
		stream->write(data, 16);

		if(s->vertexBuffer == NULL)
			continue;
		uint8 *verts = lockVertices(s->vertexBuffer, 0, 0, D3DLOCK_NOSYSLOCK);
		stream->write(verts, s->stride*header->totalNumVertex);
		unlockVertices(s->vertexBuffer);
	}

	delete[] data;
}

int32
getSizeNativeData(void *object, int32, int32)
{
	Geometry *geometry = (Geometry*)object;
	assert(geometry->instData != NULL);
	assert(geometry->instData->platform == PLATFORM_D3D9);
	InstanceDataHeader *header = (InstanceDataHeader*)geometry->instData;
	int32 size = 12 + 4 + 4 + 64 + header->numMeshes*36;
	uint32 numElt = getDeclaration(header->vertexDeclaration, NULL);
	size += 4 + numElt*8;
	size += 2*header->totalNumIndex;
	size += 0x10 + header->vertexStream[0].stride*header->totalNumVertex;
	size += 0x10 + header->vertexStream[1].stride*header->totalNumVertex;
	return size;
}

void
registerNativeDataPlugin(void)
{
	Geometry::registerPlugin(0, ID_NATIVEDATA,
	                         NULL, destroyNativeData, NULL);
	Geometry::registerPluginStream(ID_NATIVEDATA,
	                               readNativeData,
	                               writeNativeData,
	                               getSizeNativeData);
}

ObjPipeline::ObjPipeline(uint32 platform)
 : rw::ObjPipeline(platform),
   instanceCB(NULL), uninstanceCB(NULL) { }

void
ObjPipeline::instance(Atomic *atomic)
{
	Geometry *geo = atomic->geometry;
	if(geo->geoflags & Geometry::NATIVE)
		return;
	geo->geoflags |= Geometry::NATIVE;
	InstanceDataHeader *header = new InstanceDataHeader;
	MeshHeader *meshh = geo->meshHeader;
	geo->instData = header;
	header->platform = PLATFORM_D3D9;

	header->serialNumber = 0;
	header->numMeshes = meshh->numMeshes;
	header->primType = meshh->flags == 1 ? D3DPT_TRIANGLESTRIP : D3DPT_TRIANGLELIST;
	header->useOffsets = 0;
	header->totalNumVertex = geo->numVertices;
	header->totalNumIndex = meshh->totalIndices;
	header->inst = new InstanceData[header->numMeshes];

	header->indexBuffer = createIndexBuffer(header->totalNumIndex*2);

	uint16 *indices = lockIndices(header->indexBuffer, 0, 0, 0);
	InstanceData *inst = header->inst;
	Mesh *mesh = meshh->mesh;
	uint32 startindex = 0;
	for(uint32 i = 0; i < header->numMeshes; i++){
		findMinVertAndNumVertices(mesh->indices, mesh->numIndices,
		                          &inst->minVert, (int32*)&inst->numVertices);
		inst->numIndex = mesh->numIndices;
		inst->material = mesh->material;
		inst->vertexAlpha = 0;
		inst->vertexShader = NULL;
		inst->baseIndex = inst->minVert;
		inst->startIndex = startindex;
		inst->numPrimitives = header->primType == D3DPT_TRIANGLESTRIP ? inst->numIndex-2 : inst->numIndex/3;
		if(inst->minVert == 0)
			memcpy(&indices[inst->startIndex], mesh->indices, inst->numIndex*2);
		else
			for(uint32 j = 0; j < inst->numIndex; j++)
				indices[inst->startIndex+j] = mesh->indices[j] - inst->minVert;
		startindex += inst->numIndex;
		mesh++;
		inst++;
	}
	unlockIndices(header->indexBuffer);

	memset(&header->vertexStream, 0, 2*sizeof(VertexStream));

	this->instanceCB(geo, header);
}

void
ObjPipeline::uninstance(Atomic *atomic)
{
	Geometry *geo = atomic->geometry;
	if((geo->geoflags & Geometry::NATIVE) == 0)
		return;
	assert(geo->instData != NULL);
	assert(geo->instData->platform == PLATFORM_D3D9);
	geo->geoflags &= ~Geometry::NATIVE;
	geo->allocateData();
	geo->meshHeader->allocateIndices();

	InstanceDataHeader *header = (InstanceDataHeader*)geo->instData;
	uint16 *indices = lockIndices(header->indexBuffer, 0, 0, 0);
	InstanceData *inst = header->inst;
	Mesh *mesh = geo->meshHeader->mesh;
	for(uint32 i = 0; i < header->numMeshes; i++){
		if(inst->minVert == 0)
			memcpy(mesh->indices, &indices[inst->startIndex], inst->numIndex*2);
		else
			for(int32 j = 0; j < inst->numIndex; j++)
				mesh->indices[j] = indices[inst->startIndex+j] + inst->minVert;
		mesh++;
		inst++;
	}
	unlockIndices(header->indexBuffer);

	this->uninstanceCB(geo, header);
	geo->generateTriangles();
	destroyNativeData(geo, 0, 0);
}

void
defaultInstanceCB(Geometry *geo, InstanceDataHeader *header)
{
	VertexElement dcl[NUMDECLELT];

	VertexStream *s = &header->vertexStream[0];
	s->offset = 0;
	s->managed = 1;
	s->geometryFlags = 0;
	s->dynamicLock = 0;

	int i = 0;
	dcl[i++] = {0, 0, D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_POSITION, 0};
	uint32 stride = 12;
	s->geometryFlags |= 0x2;

	bool isPrelit = (geo->geoflags & Geometry::PRELIT) != 0;
	if(isPrelit){
		dcl[i++] = {0, stride, D3DDECLTYPE_D3DCOLOR, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_COLOR, 0};
		s->geometryFlags |= 0x8;
		stride += 4;
	}

	for(int32 n = 0; n < geo->numTexCoordSets; n++){
		dcl[i++] = {0, stride, D3DDECLTYPE_FLOAT2, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_TEXCOORD, n};
		s->geometryFlags |= 0x10 << n;
		stride += 8;
	}

	bool hasNormals = (geo->geoflags & Geometry::NORMALS) != 0;
	if(hasNormals){
		dcl[i++] = {0, stride, D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_NORMAL, 0};
		s->geometryFlags |= 0x4;
		stride += 12;
	}
	dcl[i] = D3DDECL_END();
	header->vertexStream[0].stride = stride;

	header->vertexDeclaration = createVertexDeclaration((VertexElement*)dcl);

	s->vertexBuffer = createVertexBuffer(header->totalNumVertex*s->stride, 0, D3DPOOL_MANAGED);

	// TODO: support both vertex buffers
	uint8 *verts = lockVertices(s->vertexBuffer, 0, 0, D3DLOCK_NOSYSLOCK);
	for(i = 0; dcl[i].usage != D3DDECLUSAGE_POSITION || dcl[i].usageIndex != 0; i++)
		;
	instV3d(vertFormatMap[dcl[i].type], verts + dcl[i].offset,
		geo->morphTargets[0].vertices,
		header->totalNumVertex,
		header->vertexStream[dcl[i].stream].stride);

	if(isPrelit){
		for(i = 0; dcl[i].usage != D3DDECLUSAGE_COLOR || dcl[i].usageIndex != 0; i++)
			;
		// TODO: vertex alpha (instance per mesh)
		instColor(vertFormatMap[dcl[i].type], verts + dcl[i].offset,
			  geo->colors,
			  header->totalNumVertex,
			  header->vertexStream[dcl[i].stream].stride);
	}

	for(int32 n = 0; n < geo->numTexCoordSets; n++){
		for(i = 0; dcl[i].usage != D3DDECLUSAGE_TEXCOORD || dcl[i].usageIndex != n; i++)
			;
		instV2d(vertFormatMap[dcl[i].type], verts + dcl[i].offset,
			geo->texCoords[n],
			header->totalNumVertex,
			header->vertexStream[dcl[i].stream].stride);
	}

	if(hasNormals){
		for(i = 0; dcl[i].usage != D3DDECLUSAGE_NORMAL || dcl[i].usageIndex != 0; i++)
			;
		instV3d(vertFormatMap[dcl[i].type], verts + dcl[i].offset,
			geo->morphTargets[0].normals,
			header->totalNumVertex,
			header->vertexStream[dcl[i].stream].stride);
	}
	unlockVertices(s->vertexBuffer);
}

void
defaultUninstanceCB(Geometry *geo, InstanceDataHeader *header)
{
	VertexElement dcl[NUMDECLELT];
	uint32 numElt = getDeclaration(header->vertexDeclaration, dcl);

	uint8 *verts[2];
	verts[0] = lockVertices(header->vertexStream[0].vertexBuffer, 0, 0, D3DLOCK_NOSYSLOCK);
	verts[1] = lockVertices(header->vertexStream[1].vertexBuffer, 0, 0, D3DLOCK_NOSYSLOCK);

	int i;
	for(i = 0; dcl[i].usage != D3DDECLUSAGE_POSITION || dcl[i].usageIndex != 0; i++)
		;
	uninstV3d(vertFormatMap[dcl[i].type], 
		  geo->morphTargets[0].vertices,
	          verts[dcl[i].stream] + dcl[i].offset,
		  header->totalNumVertex,
		  header->vertexStream[dcl[i].stream].stride);

	if(geo->geoflags & Geometry::PRELIT){
		for(i = 0; dcl[i].usage != D3DDECLUSAGE_COLOR || dcl[i].usageIndex != 0; i++)
			;
		uninstColor(vertFormatMap[dcl[i].type],
			    geo->colors,
		            verts[dcl[i].stream] + dcl[i].offset,
			    header->totalNumVertex,
			    header->vertexStream[dcl[i].stream].stride);
	}

	for(int32 n = 0; n < geo->numTexCoordSets; n++){
		for(i = 0; dcl[i].usage != D3DDECLUSAGE_TEXCOORD || dcl[i].usageIndex != n; i++)
			;
		uninstV2d(vertFormatMap[dcl[i].type],
			  geo->texCoords[n],
		          verts[dcl[i].stream] + dcl[i].offset,
			  header->totalNumVertex,
			  header->vertexStream[dcl[i].stream].stride);
	}

	if(geo->geoflags & Geometry::NORMALS){
		for(i = 0; dcl[i].usage != D3DDECLUSAGE_NORMAL || dcl[i].usageIndex != 0; i++)
			;
		uninstV3d(vertFormatMap[dcl[i].type],
			  geo->morphTargets[0].normals,
		          verts[dcl[i].stream] + dcl[i].offset,
			  header->totalNumVertex,
			  header->vertexStream[dcl[i].stream].stride);
	}

	unlockVertices(verts[0]);
	unlockVertices(verts[1]);
}

ObjPipeline*
makeDefaultPipeline(void)
{
	ObjPipeline *pipe = new ObjPipeline(PLATFORM_D3D9);
	pipe->instanceCB = defaultInstanceCB;
	pipe->uninstanceCB = defaultUninstanceCB;
	return pipe;
}

ObjPipeline*
makeSkinPipeline(void)
{
	ObjPipeline *pipe = new ObjPipeline(PLATFORM_D3D9);
	pipe->instanceCB = defaultInstanceCB;
	pipe->uninstanceCB = defaultUninstanceCB;
	pipe->pluginID = ID_SKIN;
	pipe->pluginData = 1;
	return pipe;
}

ObjPipeline*
makeMatFXPipeline(void)
{
	ObjPipeline *pipe = new ObjPipeline(PLATFORM_D3D9);
	pipe->instanceCB = defaultInstanceCB;
	pipe->uninstanceCB = defaultUninstanceCB;
	pipe->pluginID = ID_MATFX;
	pipe->pluginData = 0;
	return pipe;
}

}
}