nuclear@0: #include <d3dut.h>
nuclear@0: #include "mesh.h"
nuclear@0: 
nuclear@0: 
nuclear@0: /*static ID3D11InputLayout *vertex_layout;
nuclear@0: 
nuclear@0: static ID3D11InputLayout *create_vertex_layout()
nuclear@0: {
nuclear@0: 	static const D3D11_INPUT_ELEMENT_DESC elem_desc[] = {
nuclear@0: 		{"position", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, offsetof(Vertex, pos), D3D11_INPUT_PER_VERTEX_DATA, 0},
nuclear@0: 		{"normal", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, offsetof(Vertex, normal), D3D11_INPUT_PER_VERTEX_DATA, 0},
nuclear@0: 		{"texcoord", 0, DXGI_FORMAT_R32G32_FLOAT, 0, offsetof(Vertex, texcoord), D3D11_INPUT_PER_VERTEX_DATA, 0}
nuclear@0: 	};
nuclear@0: 	static const int num_elem = sizeof elem_desc / sizeof *elem_desc;
nuclear@0: 
nuclear@0: 	if(d3dut_dev->CreateInputLayout(elem_desc, num_elem, 
nuclear@0: }*/
nuclear@0: 
nuclear@0: 
nuclear@0: Mesh::Mesh()
nuclear@0: {
nuclear@0: 	vbuf = 0;
nuclear@0: 	cur_norm = Vector3(0, 1, 0);
nuclear@0: }
nuclear@0: 
nuclear@0: Mesh::~Mesh()
nuclear@0: {
nuclear@0: 	if(vbuf) {
nuclear@0: 		vbuf->Release();
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: void Mesh::clear()
nuclear@0: {
nuclear@0: 	invalidate_vbuffer();
nuclear@0: 	verts.clear();
nuclear@0: }
nuclear@0: 
nuclear@0: void Mesh::normal(float x, float y, float z)
nuclear@0: {
nuclear@0: 	cur_norm.x = x;
nuclear@0: 	cur_norm.y = y;
nuclear@0: 	cur_norm.z = z;
nuclear@0: }
nuclear@0: 
nuclear@0: void Mesh::texcoord(float u, float v)
nuclear@0: {
nuclear@0: 	cur_texcoord.x = u;
nuclear@0: 	cur_texcoord.y = v;
nuclear@0: }
nuclear@0: 
nuclear@0: void Mesh::vertex(float x, float y, float z)
nuclear@0: {
nuclear@0: 	Vertex v;
nuclear@0: 	v.pos = Vector3(x, y, z);
nuclear@0: 	v.normal = cur_norm;
nuclear@0: 	v.texcoord = cur_texcoord;
nuclear@0: 	verts.push_back(v);
nuclear@0: 
nuclear@0: 	invalidate_vbuffer();
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: void Mesh::draw() const
nuclear@0: {
nuclear@0: 	((Mesh*)this)->update_vbuffer();
nuclear@0: 
nuclear@0: 	unsigned int stride = sizeof(Vertex);
nuclear@0: 	unsigned int offset = 0;
nuclear@0: 	d3dut_ctx->IASetVertexBuffers(0, 1, &vbuf, &stride, &offset);
nuclear@0: 	d3dut_ctx->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
nuclear@0: 
nuclear@0: 	d3dut_ctx->Draw(verts.size(), 0);
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: bool Mesh::update_vbuffer()
nuclear@0: {
nuclear@0: 	if(vbuf) {
nuclear@0: 		return true;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	if(verts.empty()) {
nuclear@0: 		return false;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	D3D11_BUFFER_DESC bufdesc;
nuclear@0: 	memset(&bufdesc, 0, sizeof bufdesc);
nuclear@0: 	bufdesc.Usage = D3D11_USAGE_DEFAULT;
nuclear@0: 	bufdesc.ByteWidth = verts.size() * sizeof(Vertex);
nuclear@0: 	bufdesc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
nuclear@0: 
nuclear@0: 	D3D11_SUBRESOURCE_DATA subres;
nuclear@0: 	memset(&subres, 0, sizeof subres);
nuclear@0: 	subres.pSysMem = &verts[0];
nuclear@0: 
nuclear@0: 	if(d3dut_dev->CreateBuffer(&bufdesc, &subres, &vbuf) != 0) {
nuclear@0: 		fprintf(stderr, "failed to create vertex buffer\n");
nuclear@0: 		return false;
nuclear@0: 	}
nuclear@0: 	return true;
nuclear@0: }
nuclear@0: 
nuclear@0: void Mesh::invalidate_vbuffer()
nuclear@0: {
nuclear@0: 	if(vbuf) {
nuclear@0: 		vbuf->Release();
nuclear@0: 		vbuf = 0;
nuclear@0: 	}
nuclear@0: }