example/q3bsp: first person demo
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@ -133,6 +133,8 @@ struct position_normal {
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vec3 normal;
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};
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static uint8_t face_cache[16384];
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static position_normal vertex_cache[16384];
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static inline vec3 normal_transform(const mat4x4& trans, vec3 normal)
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@ -253,7 +255,7 @@ void transform_vertices(uint8_t * buf, int length, const mat4x4& trans)
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//printf("%f %f %f\n", v.x, v.y, v.z);
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vertex_cache[i].position = screen_transform(trans * v);
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vertex_cache[i].position = trans * v;
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vertex_cache[i].normal = normal_transform(trans, n);
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}
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}
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@ -282,6 +284,10 @@ static inline void render_tri_type_2(ta_parameter_writer& writer,
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ci);
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}
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static int type7_tri_count = 0;
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static int vis_tri_count = 0;
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static int total_tri_count = 0;
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static inline void render_tri_type_7(ta_parameter_writer& writer,
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vec3 ap,
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vec3 bp,
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@ -293,6 +299,8 @@ static inline void render_tri_type_7(ta_parameter_writer& writer,
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float bi,
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float ci)
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{
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type7_tri_count += 1;
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writer.append<ta_vertex_parameter::polygon_type_7>() =
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ta_vertex_parameter::polygon_type_7(polygon_vertex_parameter_control_word(false),
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ap.x, ap.y, ap.z,
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@ -315,6 +323,74 @@ static inline void render_tri_type_7(ta_parameter_writer& writer,
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0);
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}
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static inline void render_clip_tri_type_7(ta_parameter_writer& writer,
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vec3 ap,
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vec3 bp,
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vec3 cp,
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vec2 at,
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vec2 bt,
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vec2 ct,
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float li)
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{
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//return;
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const vec3 plane_point = {0.f, 0.f, 1.f};
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const vec3 plane_normal = {0.f, 0.f, 1.f};
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vec3 preclip_position[] = {ap, bp, cp};
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vec2 preclip_texture[] = {at, bt, ct};
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vec3 clip_position[4];
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vec2 clip_texture[4];
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int output_length = geometry::clip_polygon_uv<3>(clip_position,
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clip_texture,
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plane_point,
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plane_normal,
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preclip_position,
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preclip_texture);
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{
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vec3 ap;
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vec3 bp;
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vec3 cp;
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vec3 dp;
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const vec2& at = clip_texture[0];
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const vec2& bt = clip_texture[1];
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const vec2& ct = clip_texture[2];
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const vec2& dt = clip_texture[3];
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if (output_length >= 3) {
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ap = screen_transform(clip_position[0]);
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bp = screen_transform(clip_position[1]);
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cp = screen_transform(clip_position[2]);
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render_tri_type_7(writer,
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ap,
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bp,
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cp,
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at,
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bt,
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ct,
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li,
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li,
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li);
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}
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if (output_length >= 4) {
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dp = screen_transform(clip_position[3]);
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render_tri_type_7(writer,
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ap,
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cp,
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dp,
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at,
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ct,
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dt,
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li,
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li,
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li);
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}
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}
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}
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static inline float inverse_length(vec3 v)
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{
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float f = dot(v, v);
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@ -378,45 +454,50 @@ static inline void transfer_face(ta_parameter_writer& writer, q3bsp_face_t * fac
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vec3 bp = vertex_cache[bix].position;
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vec3 cp = vertex_cache[cix].position;
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if (ap.z < 0 || bp.z < 0 || cp.z < 0) {
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vis_tri_count += 1;
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if (ap.z < 0 && bp.z < 0 && cp.z < 0) {
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continue;
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}
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vec3 n = vertex_cache[aix].normal;
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float li = light_intensity(light_vec, n);
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/*
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printf("{%f %f %f} {%f %f %f} {%f %f %f}\n",
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ap.x, ap.y, ap.z,
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bp.x, bp.y, bp.z,
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cp.x, cp.y, cp.z);
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*/
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if (has_texture) {
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float v_mul = textures[face->texture].v_mul;
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vec2 at = {vert[aix].texcoord[0], vert[aix].texcoord[1] * v_mul};
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vec2 bt = {vert[bix].texcoord[0], vert[bix].texcoord[1] * v_mul};
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vec2 ct = {vert[cix].texcoord[0], vert[cix].texcoord[1] * v_mul};
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//printf("{%f %f} {%f %f} {%f %f}\n", at.x, at.y, bt.x, bt.y, ct.x, ct.y);
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render_tri_type_7(writer,
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if (ap.z < 0 || bp.z < 0 || cp.z < 0) {
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render_clip_tri_type_7(writer,
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ap,
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bp,
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cp,
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at,
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bt,
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ct,
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li);
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} else {
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render_tri_type_7(writer,
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screen_transform(ap),
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screen_transform(bp),
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screen_transform(cp),
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at,
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bt,
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ct,
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li,
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li,
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li);
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}
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} else {
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/*
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render_tri_type_2(writer,
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ap,
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bp,
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cp,
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screen_transform(ap),
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screen_transform(bp),
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screen_transform(cp),
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li,
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li,
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li);
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@ -442,6 +523,26 @@ void transfer_faces(ta_parameter_writer& writer)
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}
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}
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int count_face_triangles()
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{
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uint8_t * buf = reinterpret_cast<uint8_t *>(&_binary_pk_maps_20kdm2_bsp_start);
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q3bsp_header_t * header = reinterpret_cast<q3bsp_header_t *>(buf);
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q3bsp_direntry * fe = &header->direntries[LUMP_FACES];
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q3bsp_face_t * faces = reinterpret_cast<q3bsp_face_t *>(&buf[fe->offset]);
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int face_count = fe->length / (sizeof (struct q3bsp_face));
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int sum = 0;
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for (int i = 0; i < face_count; i++) {
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int triangles = faces[i].n_meshverts / 3;
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sum += triangles;
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}
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return sum;
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}
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void transfer_icosphere(ta_parameter_writer& writer, const mat4x4& screen_trans)
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{
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const struct model * model = &icosphere_model;
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@ -731,6 +832,39 @@ void render_leaf_ix(ta_parameter_writer& writer)
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}
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}
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void render_num(ta_parameter_writer& writer, int row, char * s, int num, int offset)
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{
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offset += unparse_base10_unsigned(&s[offset], num, 5, ' ');
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font_bitmap::transform_string(writer,
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8, 16, // texture
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8, 16, // glyph
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16 + 50 * 8, // position x
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16 + row * 16, // position y
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s, offset,
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para_control::list_type::opaque);
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}
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void render_tris_count(ta_parameter_writer& writer)
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{
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int offset = 18;
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{
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char s[32] = "total tris: ";
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int row = 0;
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render_num(writer, row, s, total_tri_count, offset);
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}
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{
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char s[32] = "bsp-visible tris: ";
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int row = 1;
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render_num(writer, row, s, vis_tri_count, offset);
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}
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{
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char s[32] = "rendered tris: ";
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int row = 2;
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render_num(writer, row, s, type7_tri_count, offset);
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}
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}
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void render_bounding_box_mm(ta_parameter_writer& writer, const mat4x4& trans, int mins[3], int maxs[3], uint32_t color)
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{
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vec3 max = {(float)maxs[0], (float)maxs[1], (float)maxs[2]};
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@ -806,11 +940,14 @@ void render_leaf_faces(ta_parameter_writer& writer, const mat4x4& trans, q3bsp_l
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for (int i = 0; i < leaf->n_leaffaces; i++) {
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int face_ix = lf[i].face;
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if (face_cache[face_ix] != 0)
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continue;
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face_cache[face_ix] = 1;
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transfer_face(writer, &faces[face_ix], &last_texture);
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}
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}
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void render_sphere_bounding_box(ta_parameter_writer& writer, const mat4x4& trans)
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void render_visible_faces(ta_parameter_writer& writer, const mat4x4& trans, const vec3 pos)
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{
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uint8_t * buf = reinterpret_cast<uint8_t *>(&_binary_pk_maps_20kdm2_bsp_start);
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q3bsp_header_t * header = reinterpret_cast<q3bsp_header_t *>(buf);
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@ -833,14 +970,14 @@ void render_sphere_bounding_box(ta_parameter_writer& writer, const mat4x4& trans
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q3bsp_node_t * new_root = NULL;
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if (root->children[0] >= 0) {
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q3bsp_node_t * node = &nodes[root->children[0]];
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a_inside = vec3_in_bb(sphere_position, node->mins, node->maxs);
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a_inside = vec3_in_bb(pos, node->mins, node->maxs);
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if (a_inside) {
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new_root = node;
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}
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} else {
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int leaf_ix = -(root->children[0] + 1);
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q3bsp_leaf_t * leaf = &leafs[leaf_ix];
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a_inside = vec3_in_bb(sphere_position, leaf->mins, leaf->maxs);
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a_inside = vec3_in_bb(pos, leaf->mins, leaf->maxs);
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if (a_inside) {
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bb_leaf = leaf;
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break;
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@ -848,14 +985,14 @@ void render_sphere_bounding_box(ta_parameter_writer& writer, const mat4x4& trans
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}
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if (root->children[1] >= 0) {
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q3bsp_node_t * node = &nodes[root->children[1]];
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b_inside = vec3_in_bb(sphere_position, node->mins, node->maxs);
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b_inside = vec3_in_bb(pos, node->mins, node->maxs);
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if (b_inside) {
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new_root = node;
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}
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} else {
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int leaf_ix = -(root->children[1] + 1);
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q3bsp_leaf_t * leaf = &leafs[leaf_ix];
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b_inside = vec3_in_bb(sphere_position, leaf->mins, leaf->maxs);
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b_inside = vec3_in_bb(pos, leaf->mins, leaf->maxs);
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if (b_inside) {
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bb_leaf = leaf;
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break;
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@ -883,8 +1020,10 @@ void render_sphere_bounding_box(ta_parameter_writer& writer, const mat4x4& trans
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q3bsp_leaf_t * leaf = &leafs[i];
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// Cluster x is visible from cluster y if the (1 << y % 8) bit of vecs[x * sz_vecs + y / 8] is set.
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/*
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if (leaf->mins[2] > 450 && leaf->maxs[2] > 450)
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continue;
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*/
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int y = bb_leaf->cluster;
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int x = leaf->cluster;
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@ -907,15 +1046,23 @@ void transfer_scene(ta_parameter_writer& writer, const mat4x4& screen_trans, con
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q3bsp_direntry * ve = &header->direntries[LUMP_VERTEXES];
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transform_vertices(&buf[ve->offset], ve->length, trans);
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q3bsp_direntry * fe = &header->direntries[LUMP_FACES];
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int face_count = fe->length / (sizeof (struct q3bsp_face));
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//transfer_faces(writer);
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transfer_icosphere(writer, trans);
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render_matrix(writer, screen_trans_inv);
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render_leaf_ix(writer);
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render_matrix(writer, screen_trans);
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//render_leaf_ix(writer);
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render_sphere_position(writer);
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render_zero_position(writer, screen_trans_inv);
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//render_zero_position(writer, screen_trans_inv);
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render_sphere_bounding_box(writer, trans);
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vec3 pos = screen_trans_inv * (vec3){0, 0, 0};
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type7_tri_count = 0;
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vis_tri_count = 0;
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for (int i = 0; i < face_count; i++) face_cache[i] = 0;
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render_visible_faces(writer, trans, pos);
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render_tris_count(writer);
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writer.append<ta_global_parameter::end_of_list>() =
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ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
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@ -1035,13 +1182,15 @@ mat4x4 update_analog(const mat4x4& screen)
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if (ra && !la) x = -10;
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if (la && !ra) x = 10;
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float y = -7 * y_;
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float z = 0;
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if (ua && !da) z = -10;
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if (da && !ua) z = 10;
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mat4x4 t = {
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1, 0, 0, x,
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0, 1, 0, 0,
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0, 1, 0, y,
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0, 0, 1, z,
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0, 0, 0, 1,
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};
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@ -1049,12 +1198,14 @@ mat4x4 update_analog(const mat4x4& screen)
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float yt = 0.05f * x_;
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float xt = 0.05f * y_;
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/*
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mat4x4 rx = {
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1, 0, 0, 0,
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0, cos(xt), -sin(xt), 0,
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0, sin(xt), cos(xt), 0,
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0, 0, 0, 1,
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};
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*/
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mat4x4 ry = {
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cos(yt), 0, sin(yt), 0,
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@ -1106,7 +1257,7 @@ mat4x4 update_analog(const mat4x4& screen)
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}
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}
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return rx * ry * t * screen;
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return ry * t * screen;
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}
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void transfer_font()
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@ -1125,6 +1276,8 @@ int main()
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{
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serial::init(0);
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total_tri_count = count_face_triangles();
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interrupt_init();
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transfer_textures();
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transfer_font();
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@ -1180,12 +1333,20 @@ int main()
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int ta = 0;
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int core = 0;
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mat4x4 trans = {
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/*
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mat4x4 trans1 = {
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1.0, 0.0, 0.000, -1123.0,
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0.0, -0.888, -0.458, 859.0,
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0.0, 0.458, -0.888, 791.0,
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0.0, 0.000, 0.000, 1.0,
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};
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*/
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mat4x4 trans = {
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1.0, 0.0, 0.0, -894.0,
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0.0, 0.0, -1.0, 451.0,
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0.0, 1.0, 0.0, -465.0,
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0.0, 0.0, 0.0, 1.0,
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};
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do_get_condition();
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