nuclear@1: #include "opengl.h"
nuclear@1: #include "renderer.h"
nuclear@3: #include "sdr.h"
nuclear@1: 
nuclear@1: Renderer::Renderer()
nuclear@1: {
nuclear@4: 	blobtex = 0;
nuclear@1: 	leveltex = 0;
nuclear@1: 	sdrprog = 0;
nuclear@3: 
nuclear@3: 	level = 0;
nuclear@3: 
nuclear@3: 	fov = M_PI / 4.0;
nuclear@3: 	aspect = 1.0;
nuclear@1: }
nuclear@1: 
nuclear@1: Renderer::~Renderer()
nuclear@1: {
nuclear@1: 	shutdown();
nuclear@1: }
nuclear@1: 
nuclear@3: bool Renderer::init(Level *level)
nuclear@1: {
nuclear@3: 	if(!(sdrprog = create_program_load("sdr/bloboray.v.glsl", "sdr/bloboray.p.glsl"))) {
nuclear@1: 		return false;
nuclear@3: 	}
nuclear@3: 
nuclear@3: 	Volume *vol = level->terrain;
nuclear@1: 
nuclear@1: 	leveltex = new Texture3D;
nuclear@3: 	leveltex->create(vol->get_size(0), vol->get_size(1), vol->get_size(2));
nuclear@3: 
nuclear@4: 	blobtex = new Texture1D;
nuclear@5: 	blobtex->set_pixel_format(GL_RGBA16F);	// floating point textures
nuclear@4: 	blobtex->create(level->blobs.size());
nuclear@4: 	blobtex->set_filtering(GL_NEAREST);
nuclear@4: 
nuclear@3: 	this->level = level;
nuclear@1: 
nuclear@1: 	return true;
nuclear@1: }
nuclear@1: 
nuclear@1: void Renderer::shutdown()
nuclear@1: {
nuclear@1: 	delete leveltex;
nuclear@3: 	if(sdrprog) {
nuclear@3: 		free_program(sdrprog);
nuclear@3: 	}
nuclear@3: }
nuclear@3: 
nuclear@3: void Renderer::set_fov(float fov)
nuclear@3: {
nuclear@3: 	this->fov = fov;
nuclear@3: }
nuclear@3: 
nuclear@3: void Renderer::set_aspect(float aspect)
nuclear@3: {
nuclear@3: 	this->aspect = aspect;
nuclear@1: }
nuclear@1: 
nuclear@1: static void draw_cube(const Vector3 &pos, float sz);
nuclear@1: 
nuclear@5: void Renderer::prepare()
nuclear@5: {
nuclear@5: 	leveltex->update((float*)level->terrain->get_data_ptr());
nuclear@5: 	update_blobtex();
nuclear@5: }
nuclear@5: 
nuclear@3: void Renderer::render() const
nuclear@1: {
nuclear@4: 	bind_texture(leveltex, 0);
nuclear@4: 	bind_texture(blobtex, 1);
nuclear@4: 
nuclear@4: 	set_uniform_float3(sdrprog, "worldsize", level->world_size.x, level->world_size.y,
nuclear@4: 			level->world_size.z);
nuclear@3: 	set_uniform_float3(sdrprog, "volsize", level->terrain->get_size(0),
nuclear@3: 			level->terrain->get_size(1), level->terrain->get_size(2));
nuclear@3: 	set_uniform_float4(sdrprog, "camprop", fov, aspect, 0, 0);
nuclear@4: 
nuclear@5: 	set_uniform_int(sdrprog, "num_blobs", (int)level->blobs.size());
nuclear@5: 
nuclear@4: 	set_uniform_int(sdrprog, "voltex", 0);
nuclear@4: 	set_uniform_int(sdrprog, "blobtex", 1);
nuclear@3: 	bind_program(sdrprog);
nuclear@3: 
nuclear@3: 	glBegin(GL_QUADS);
nuclear@3: 	glTexCoord2f(0, 0);
nuclear@3: 	glVertex2f(-1, -1);
nuclear@3: 	glTexCoord2f(1, 0);
nuclear@3: 	glVertex2f(1, -1);
nuclear@3: 	glTexCoord2f(1, 1);
nuclear@3: 	glVertex2f(1, 1);
nuclear@3: 	glTexCoord2f(0, 1);
nuclear@3: 	glVertex2f(-1, 1);
nuclear@3: 	glEnd();
nuclear@3: 
nuclear@3: 	bind_program(0);
nuclear@4: 	bind_texture(0, 1);
nuclear@4: 	bind_texture(0, 0);
nuclear@3: 
nuclear@3: 	/*glEnable(GL_COLOR_MATERIAL);
nuclear@1: 	glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
nuclear@1: 
nuclear@1: 	glBegin(GL_QUADS);
nuclear@1: 	for(int i=0; i<vol->get_size(0); i++) {
nuclear@1: 		for(int j=0; j<vol->get_size(1); j++) {
nuclear@1: 			for(int k=0; k<vol->get_size(2) - 1; k++) {
nuclear@1: 				Vector4 vox = vol->get_voxel(i, j, k);
nuclear@1: 				Vector4 next = vol->get_voxel(i, j, k + 1);
nuclear@1: 
nuclear@1: 				if(vox.w > 0.1 && next.w < 0.1) {
nuclear@1: 					glColor3f(vox.x, vox.y, vox.z);
nuclear@1: 
nuclear@1: 					float x = ((float)i - vol->get_size(0) / 2) * 0.1;
nuclear@1: 					float z = ((float)j - vol->get_size(1) / 2) * 0.1;
nuclear@1: 					float y = ((float)k - vol->get_size(2) / 2) * 0.1;
nuclear@1: 					draw_cube(Vector3(x, y, z), 0.1);
nuclear@1: 				}
nuclear@1: 			}
nuclear@1: 		}
nuclear@1: 	}
nuclear@1: 	glEnd();
nuclear@1: 
nuclear@1: 	glDisable(GL_COLOR_MATERIAL);
nuclear@3: 	*/
nuclear@1: }
nuclear@1: 
nuclear@1: 
nuclear@1: static void draw_cube(const Vector3 &pos, float sz)
nuclear@1: {
nuclear@1: 	sz /= 2.0;
nuclear@1: 
nuclear@1: 	glNormal3f(0, 0, 1);
nuclear@1: 	glVertex3f(pos.x - sz, pos.y - sz, pos.z + sz);
nuclear@1: 	glVertex3f(pos.x + sz, pos.y - sz, pos.z + sz);
nuclear@1: 	glVertex3f(pos.x + sz, pos.y + sz, pos.z + sz);
nuclear@1: 	glVertex3f(pos.x - sz, pos.y + sz, pos.z + sz);
nuclear@1: 
nuclear@1: 	glNormal3f(1, 0, 0);
nuclear@1: 	glVertex3f(pos.x + sz, pos.y - sz, pos.z + sz);
nuclear@1: 	glVertex3f(pos.x + sz, pos.y - sz, pos.z - sz);
nuclear@1: 	glVertex3f(pos.x + sz, pos.y + sz, pos.z - sz);
nuclear@1: 	glVertex3f(pos.x + sz, pos.y + sz, pos.z + sz);
nuclear@1: 
nuclear@1: 	glNormal3f(0, 0, -1);
nuclear@1: 	glVertex3f(pos.x + sz, pos.y - sz, pos.z - sz);
nuclear@1: 	glVertex3f(pos.x - sz, pos.y - sz, pos.z - sz);
nuclear@1: 	glVertex3f(pos.x - sz, pos.y + sz, pos.z - sz);
nuclear@1: 	glVertex3f(pos.x + sz, pos.y + sz, pos.z - sz);
nuclear@1: 
nuclear@1: 	glNormal3f(-1, 0, 0);
nuclear@1: 	glVertex3f(pos.x - sz, pos.y - sz, pos.z - sz);
nuclear@1: 	glVertex3f(pos.x - sz, pos.y - sz, pos.z + sz);
nuclear@1: 	glVertex3f(pos.x - sz, pos.y + sz, pos.z + sz);
nuclear@1: 	glVertex3f(pos.x - sz, pos.y + sz, pos.z - sz);
nuclear@1: 
nuclear@1: 	glNormal3f(0, 1, 0);
nuclear@1: 	glVertex3f(pos.x - sz, pos.y + sz, pos.z + sz);
nuclear@1: 	glVertex3f(pos.x + sz, pos.y + sz, pos.z + sz);
nuclear@1: 	glVertex3f(pos.x + sz, pos.y + sz, pos.z - sz);
nuclear@1: 	glVertex3f(pos.x - sz, pos.y + sz, pos.z - sz);
nuclear@1: 
nuclear@1: 	glNormal3f(0, -1, 0);
nuclear@1: 	glVertex3f(pos.x - sz, pos.y - sz, pos.z - sz);
nuclear@1: 	glVertex3f(pos.x + sz, pos.y - sz, pos.z - sz);
nuclear@1: 	glVertex3f(pos.x + sz, pos.y - sz, pos.z + sz);
nuclear@1: 	glVertex3f(pos.x - sz, pos.y - sz, pos.z + sz);
nuclear@1: 
nuclear@1: }
nuclear@4: 
nuclear@4: void Renderer::update_blobtex()
nuclear@4: {
nuclear@4: 	int nblobs = (int)level->blobs.size();
nuclear@4: 
nuclear@4: 	float *data = (float*)alloca(nblobs * 4 * sizeof *data);
nuclear@4: 	float *dptr = data;
nuclear@4: 
nuclear@4: 	for(int i=0; i<nblobs; i++) {
nuclear@4: 		*dptr++ = level->blobs[i].pos.x;
nuclear@4: 		*dptr++ = level->blobs[i].pos.y;
nuclear@4: 		*dptr++ = level->blobs[i].pos.z;
nuclear@4: 		*dptr++ = 1.0;
nuclear@4: 	}
nuclear@4: 
nuclear@4: 	blobtex->update(data);
nuclear@4: }