void SphereGraphicsObject::initVertices(int iterations)
{
//The number of facets will be (4^iterations) * 8
int nFaces=(int)pow(4.0f,iterations)*8;
Face3 *faces=new Face3[nFaces];
if(NULL==faces)
systemError("could not alloc sphere");
CreateNSphere(faces,iterations);
printf("sphere: %d iterations, %d faces created\n",iterations,nFaces);
verts=new Vec3[nFaces*3];
normals=new Vec3[nFaces*3];
nVerts=nFaces*3;
for(int f=0;f<nFaces;f++) {
verts[f*3+0]=faces[f].p1;
verts[f*3+1]=faces[f].p2;
verts[f*3+2]=faces[f].p3;
//face normals
/*Vec3 axis1=faces[f].p2-faces[f].p1;
Vec3 axis2=faces[f].p3-faces[f].p1;
Vec3 normal;
normal.crossProduct(&axis1,&axis2);
normal.normalize();
*/
//point normals
normals[f*3+0]=faces[f].p1;
normals[f*3+1]=faces[f].p2;
normals[f*3+2]=faces[f].p3;
//just in case
normals[f*3+0].normalize();
normals[f*3+1].normalize();
normals[f*3+2].normalize();
}
delete faces;
}
void Setup(CPlatform * const pPlatform)
{
unsigned int got = 0;
const char *pVertStr[3] = {0,0,0}, *pFragStr = 0;
unsigned int nSphereFloats;
float *pSphereVertices = 0;
unsigned int iterations = 7;
int nFacets = 0;
glswInit();
glswSetPath("../resources/", ".glsl");
WRender::SetClearColour(0,0,0,0);
WRender::EnableCulling(true);
got = glswGetShadersAlt("shaders.Version+shaders.Shared+shaders.FlatShading.Vertex", pVertStr, 3);
pFragStr = glswGetShaders("shaders.Version+shaders.FlatShading.Fragment");
CShader vertexShader(CShader::VERT, pVertStr, got);
CShader fragmentShader(CShader::FRAG, &pFragStr, 1);
pVertStr[0] = glswGetShaders("shaders.Version+shaders.Gamma.Vertex");
pFragStr = glswGetShaders("shaders.Version+shaders.Gamma.Fragment");
CShader vertexShaderStage2(CShader::VERT, &pVertStr[0], 1);
CShader fragmentShaderStage2(CShader::FRAG, &pFragStr, 1);
// - - - - - - - - - -
//setup the shaders
program[0].Initialise();
program[0].AddShader(&vertexShader);
program[0].AddShader(&fragmentShader);
program[0].Link();
program[1].Initialise();
program[1].AddShader(&vertexShaderStage2);
program[1].AddShader(&fragmentShaderStage2);
program[1].Link();
program[1].Start();
program[1].SetTextureUnit("src_image",0);
program[1].Stop();
// - - - - - - - - - -
//setup the textures
WRender::Texture::SDescriptor desc = {WRender::Texture::TEX_2D, WRender::Texture::RGB8, WIDTH_HEIGHT, WIDTH_HEIGHT, 0, 0, WRender::Texture::DONT_GEN_MIPMAP};
WRender::Texture::SParam param[] ={
{ WRender::Texture::MIN_FILTER, WRender::Texture::LINEAR},
{ WRender::Texture::MAG_FILTER, WRender::Texture::LINEAR},
{ WRender::Texture::WRAP_S, WRender::Texture::REPEAT},
{ WRender::Texture::WRAP_T, WRender::Texture::REPEAT},
};
WRender::CreateBaseTexture(texR, desc);
WRender::SetTextureParams(texR,param,4);
//setup Frame Buffer
WRender::CreateFrameBuffer(fbo);
WRender::AddTextureRenderBuffer(fbo, texR, WRender::ATT_CLR0, 0);
WRender::CheckFrameBuffer(fbo);
// - - - - - - - - - -
//set up shapes
//SPHERE
nSphereVertices = unsigned int(powl(4.0,long double(iterations)))*8*3;
nSphereFloats = nSphereVertices*3;
pSphereVertices = new float[nSphereFloats];
nFacets = CreateNSphere(pSphereVertices, iterations);
vaoSphere = WRender::CreateVertexArrayObject();
abSphere = WRender::CreateBuffer(WRender::ARRAY, WRender::STATIC, sizeof(float)*nSphereFloats, pSphereVertices);
WRender::BindVertexArrayObject(vaoSphere);
WRender::VertexAttribute vaSphere[1] = {
{abSphere, 0, 3, WRender::FLOAT, 0, sizeof(float)*3, 0, 0}
};
WRender::SetAttributeFormat( vaSphere, 1, 0);
delete[] pSphereVertices;
//square
sqVao = WRender::CreateVertexArrayObject();
sqEab = WRender::CreateBuffer(WRender::ELEMENTS, WRender::STATIC, sizeof(sqIndices), sqIndices);
sqAb = WRender::CreateBuffer(WRender::ARRAY, WRender::STATIC, sizeof(sqVertices), sqVertices);
WRender::BindVertexArrayObject(sqVao);
WRender::BindBuffer(WRender::ELEMENTS, sqEab);
WRender::VertexAttribute sqVa[2] = {
{sqAb, 0, 3, WRender::FLOAT, 0, sizeof(float)*5, 0, 0}, //vertices
{sqAb, 1, 2, WRender::FLOAT, 0, sizeof(float)*5, sizeof(float)*3, 0}, //texture coordinates
};
WRender::SetAttributeFormat( sqVa, 2, 0);
WRender::UnbindVertexArrayObject();
//ubo for cameras etc
ubo = WRender::CreateBuffer(WRender::UNIFORM, WRender::DYNAMIC, sizeof(Transforms), &transform);
WRender::BindBufferToIndex(WRender::UNIFORM, ubo, 1);
Transform::CreateProjectionMatrix(transforms.proj, -1.0f, 1.0f, -1.0f, 1.0f, 1.0f, 50.0f);
}
