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bullet3/Demos3/GpuDemos/shadows/ShadowMapDemo.cpp

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#if 0
#include "ShadowMapDemo.h"
#include "ShadowMapDemoInternalData.h"
#include "OpenGLWindow/GLInstancingRenderer.h"
#include "OpenGLWindow/GLPrimitiveRenderer.h"
#include "OpenGLWindow/ShapeData.h"
#include "Bullet3Common/b3Quaternion.h"
#include <stdio.h>
ShadowMapDemo::ShadowMapDemo()
{
m_shadowData = new ShadowMapDemoInternalData;
}
ShadowMapDemo::~ShadowMapDemo()
{
delete m_shadowData;
}
void ShadowMapDemo::initPhysics(const ConstructionInfo& ci)
{
m_shadowData->m_instancingRenderer = ci.m_instancingRenderer;
m_shadowData->m_primitiveRenderer = ci.m_primRenderer;
float pos[4]={0,3,0,0};
float orn[4]={0,0,0,1};
float color[4]={1,0,0,1};
float scaling[4]={1,1,1,1};
if (1)
{
///create a sphere
int sphereShape = registerGraphicsSphereShape(ci,0.1,false);
ci.m_instancingRenderer->registerGraphicsInstance(sphereShape,pos,orn,color,scaling);
}
if (1)
{
//create a cube
int strideInBytes = 9*sizeof(float);
int numVertices = sizeof(cube_vertices)/strideInBytes;
int numIndices = sizeof(cube_vertices)/sizeof(int);
//int shapeId = ci.m_instancingRenderer->registerShape(&cube_vertices[0],numVertices,cube_indices,numIndices);
int boxShape = ci.m_instancingRenderer->registerShape(&cube_vertices[0],numVertices,cube_indices,numIndices);
pos[1]=0.f;
scaling[0]=scaling[2]=50.f;
color[0]=1.f;
color[1]=1.f;
color[2]=1.f;
color[3]=1.f;
ci.m_instancingRenderer->registerGraphicsInstance(boxShape ,pos,orn,color,scaling);
}
b3Vector3 shift(0,0,0);
if (0)
{
b3Vector3 scaling(1,1,1);
const char* filename="data/room_thickwalls.obj";
this->createConcaveMesh(ci,filename,shift,scaling);
}
{
b3Vector3 camPos(0, 2,5);
m_shadowData->m_instancingRenderer->setCameraTargetPosition(camPos);
m_shadowData->m_instancingRenderer->setCameraPitch(0);
m_shadowData->m_instancingRenderer->setCameraYaw(0);
m_shadowData->m_instancingRenderer->setCameraDistance(15);
}
//m_shadowData->m_instancingRenderer->setCameraYaw(55);
ci.m_instancingRenderer->writeTransforms();
}
void ShadowMapDemo::exitPhysics()
{
}
void ShadowMapDemo::clientMoveAndDisplay()
{
}
#include"../../Wavefront/objLoader.h"
#include "OpenGLWindow/GLInstanceGraphicsShape.h"
static GLInstanceGraphicsShape* createGraphicsShapeFromWavefrontObj(objLoader* obj)
{
b3AlignedObjectArray<GLInstanceVertex>* vertices = new b3AlignedObjectArray<GLInstanceVertex>;
{
// int numVertices = obj->vertexCount;
// int numIndices = 0;
b3AlignedObjectArray<int>* indicesPtr = new b3AlignedObjectArray<int>;
/*
for (int v=0;v<obj->vertexCount;v++)
{
vtx.xyzw[0] = obj->vertexList[v]->e[0];
vtx.xyzw[1] = obj->vertexList[v]->e[1];
vtx.xyzw[2] = obj->vertexList[v]->e[2];
b3Vector3 n(vtx.xyzw[0],vtx.xyzw[1],vtx.xyzw[2]);
if (n.length2()>B3_EPSILON)
{
n.normalize();
vtx.normal[0] = n[0];
vtx.normal[1] = n[1];
vtx.normal[2] = n[2];
} else
{
vtx.normal[0] = 0; //todo
vtx.normal[1] = 1;
vtx.normal[2] = 0;
}
vtx.uv[0] = 0.5f;vtx.uv[1] = 0.5f; //todo
vertices->push_back(vtx);
}
*/
for (int f=0;f<obj->faceCount;f++)
{
obj_face* face = obj->faceList[f];
//b3Vector3 normal(face.m_plane[0],face.m_plane[1],face.m_plane[2]);
if (face->vertex_count>=3)
{
b3Vector3 normal(0,1,0);
int vtxBaseIndex = vertices->size();
if (face->vertex_count<=4)
{
indicesPtr->push_back(vtxBaseIndex);
indicesPtr->push_back(vtxBaseIndex+1);
indicesPtr->push_back(vtxBaseIndex+2);
GLInstanceVertex vtx0;
vtx0.xyzw[0] = obj->vertexList[face->vertex_index[0]]->e[0];
vtx0.xyzw[1] = obj->vertexList[face->vertex_index[0]]->e[1];
vtx0.xyzw[2] = obj->vertexList[face->vertex_index[0]]->e[2];
vtx0.xyzw[3] = 0.f;//obj->vertexList[face->vertex_index[0]]->e[2];
vtx0.uv[0] = 0.5f;//obj->textureList[face->vertex_index[0]]->e[0];
vtx0.uv[1] = 0.5f;//obj->textureList[face->vertex_index[0]]->e[1];
GLInstanceVertex vtx1;
vtx1.xyzw[0] = obj->vertexList[face->vertex_index[1]]->e[0];
vtx1.xyzw[1] = obj->vertexList[face->vertex_index[1]]->e[1];
vtx1.xyzw[2] = obj->vertexList[face->vertex_index[1]]->e[2];
vtx1.xyzw[3]= 0.f;
vtx1.uv[0] = 0.5f;//obj->textureList[face->vertex_index[1]]->e[0];
vtx1.uv[1] = 0.5f;//obj->textureList[face->vertex_index[1]]->e[1];
GLInstanceVertex vtx2;
vtx2.xyzw[0] = obj->vertexList[face->vertex_index[2]]->e[0];
vtx2.xyzw[1] = obj->vertexList[face->vertex_index[2]]->e[1];
vtx2.xyzw[2] = obj->vertexList[face->vertex_index[2]]->e[2];
vtx2.xyzw[3] = 0.f;
vtx2.uv[0] = 0.5f;obj->textureList[face->vertex_index[2]]->e[0];
vtx2.uv[1] = 0.5f;obj->textureList[face->vertex_index[2]]->e[1];
b3Vector3 v0(vtx0.xyzw[0],vtx0.xyzw[1],vtx0.xyzw[2]);
b3Vector3 v1(vtx1.xyzw[0],vtx1.xyzw[1],vtx1.xyzw[2]);
b3Vector3 v2(vtx2.xyzw[0],vtx2.xyzw[1],vtx2.xyzw[2]);
normal = (v1-v0).cross(v2-v0);
normal.normalize();
vtx0.normal[0] = normal[0];
vtx0.normal[1] = normal[1];
vtx0.normal[2] = normal[2];
vtx1.normal[0] = normal[0];
vtx1.normal[1] = normal[1];
vtx1.normal[2] = normal[2];
vtx2.normal[0] = normal[0];
vtx2.normal[1] = normal[1];
vtx2.normal[2] = normal[2];
vertices->push_back(vtx0);
vertices->push_back(vtx1);
vertices->push_back(vtx2);
}
if (face->vertex_count==4)
{
indicesPtr->push_back(vtxBaseIndex);
indicesPtr->push_back(vtxBaseIndex+1);
indicesPtr->push_back(vtxBaseIndex+2);
indicesPtr->push_back(vtxBaseIndex+3);
//
GLInstanceVertex vtx3;
vtx3.xyzw[0] = obj->vertexList[face->vertex_index[3]]->e[0];
vtx3.xyzw[1] = obj->vertexList[face->vertex_index[3]]->e[1];
vtx3.xyzw[2] = obj->vertexList[face->vertex_index[3]]->e[2];
vtx3.uv[0] = 0.5;
vtx3.uv[1] = 0.5;
vtx3.normal[0] = normal[0];
vtx3.normal[1] = normal[1];
vtx3.normal[2] = normal[2];
vertices->push_back(vtx3);
}
}
}
GLInstanceGraphicsShape* gfxShape = new GLInstanceGraphicsShape;
gfxShape->m_vertices = vertices;
gfxShape->m_numvertices = vertices->size();
gfxShape->m_indices = indicesPtr;
gfxShape->m_numIndices = indicesPtr->size();
for (int i=0;i<4;i++)
gfxShape->m_scaling[i] = 1;//bake the scaling into the vertices
return gfxShape;
}
}
void ShadowMapDemo::createConcaveMesh(const ConstructionInfo& ci, const char* fileName, const b3Vector3& shift, const b3Vector3& scaling)
{
objLoader* objData = new objLoader();
FILE* f = 0;
char relativeFileName[1024];
{
const char* prefix[]={"./","../","../../","../../../","../../../../"};
int numPrefixes = sizeof(prefix)/sizeof(char*);
for (int i=0;i<numPrefixes;i++)
{
sprintf(relativeFileName,"%s%s",prefix[i],fileName);
f = fopen(relativeFileName,"r");
if (f)
{
break;
}
}
}
if (f)
{
fclose(f);
f=0;
}
else
return;
objData->load(relativeFileName);
int index=10;
{
GLInstanceGraphicsShape* shape = createGraphicsShapeFromWavefrontObj(objData);
b3AlignedObjectArray<b3Vector3> verts;
for (int i=0;i<shape->m_numvertices;i++)
{
for (int j=0;j<3;j++)
shape->m_vertices->at(i).xyzw[j] += shift[j];
b3Vector3 vtx(shape->m_vertices->at(i).xyzw[0],
shape->m_vertices->at(i).xyzw[1],
shape->m_vertices->at(i).xyzw[2]);
verts.push_back(vtx*scaling);
}
{
int strideInBytes = 9*sizeof(float);
int numVertices = sizeof(cube_vertices)/strideInBytes;
int numIndices = sizeof(cube_indices)/sizeof(int);
//int shapeId = ci.m_instancingRenderer->registerShape(&cube_vertices[0],numVertices,cube_indices,numIndices);
//int shapeId = ci.m_instancingRenderer->registerShape(&cube_vertices[0],numVertices,cube_indices,numIndices);
int shapeId = ci.m_instancingRenderer->registerShape(&shape->m_vertices->at(0).xyzw[0], shape->m_numvertices, &shape->m_indices->at(0), shape->m_numIndices);
b3Quaternion orn(0,0,0,1);
b3Vector4 color(0.3,0.3,1,1.f);//0.5);//1.f
{
float mass = 0.f;
b3Vector3 position(0,0,0);
int id = ci.m_instancingRenderer->registerGraphicsInstance(shapeId,position,orn,color,scaling);
index++;
}
}
}
delete objData;
}
void ShadowMapDemo::renderScene()
{
float color[4]={1,1,1,1};
m_shadowData->m_instancingRenderer->renderScene();
m_shadowData->m_instancingRenderer->enableShadowMap();
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_NONE );
// glTexParameteri( GL_TEXTURE_2D, GL_DEPTH_TEXTURE_MODE, GL_LUMINANCE );
m_shadowData->m_primitiveRenderer->drawTexturedRect(10,10,90,90,color,0,0,1,1,true);
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_COMPARE_REF_TO_TEXTURE);
}
#endif
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