/*
int texture
table float[16]
uint32_t color
uint32_t additive
*/
static int
ldraw(lua_State *L) {
int tex = (int)luaL_checkinteger(L,1);
int texid = texture_glid(tex);
if (texid == 0) {
lua_pushboolean(L,0);
return 1;
}
luaL_checktype(L, 2, LUA_TTABLE);
uint32_t color = 0xffffffff;
if (!lua_isnoneornil(L,3)) {
color = (uint32_t)lua_tounsigned(L,3);
}
uint32_t additive = (uint32_t)luaL_optunsigned(L,4,0);
shader_program(PROGRAM_PICTURE,additive);
shader_texture(texid);
int n = lua_rawlen(L, 2);
int point = n/4;
if (point * 4 != n) {
return luaL_error(L, "Invalid polygon");
}
#if !defined(_MSC_VER)
float vb[n];
#else
msvc::dynarray<float> vb(n);
#endif
int i;
for (i=0;i<point;i++) {
lua_rawgeti(L, 2, i*2+1);
lua_rawgeti(L, 2, i*2+2);
lua_rawgeti(L, 2, point*2+i*2+1);
lua_rawgeti(L, 2, point*2+i*2+2);
float tx = lua_tonumber(L, -4);
float ty = lua_tonumber(L, -3);
float vx = lua_tonumber(L, -2);
float vy = lua_tonumber(L, -1);
lua_pop(L,4);
screen_trans(&vx,&vy);
texture_coord(tex, &tx, &ty);
vb[i*4+0] = vx + 1.0f;
vb[i*4+1] = vy - 1.0f;
vb[i*4+2] = tx;
vb[i*4+3] = ty;
}
if (point == 4) {
shader_draw(vb, color);
} else {
shader_drawpolygon(point, vb, color);
}
return 0;
}
/*
int texture
table float[16]
uint32_t color
uint32_t additive
*/
static int
ldraw(lua_State *L) {
int tex = (int)luaL_checkinteger(L,1);
int texid = texture_glid(tex);
if (texid == 0) {
lua_pushboolean(L,0);
return 1;
}
luaL_checktype(L, 2, LUA_TTABLE);
uint32_t color = 0xffffffff;
if (!lua_isnoneornil(L,3)) {
color = (uint32_t)lua_tounsigned(L,3);
}
uint32_t additive = (uint32_t)luaL_optunsigned(L,4,0);
shader_program(PROGRAM_PICTURE);
shader_texture(texid);
int n = lua_rawlen(L, 2);
int point = n/4;
if (point * 4 != n) {
return luaL_error(L, "Invalid polygon");
}
ARRAY(struct vertex_pack, vb, point);
int i;
for (i=0;i<point;i++) {
lua_rawgeti(L, 2, i*2+1);
lua_rawgeti(L, 2, i*2+2);
lua_rawgeti(L, 2, point*2+i*2+1);
lua_rawgeti(L, 2, point*2+i*2+2);
float tx = lua_tonumber(L, -4);
float ty = lua_tonumber(L, -3);
float vx = lua_tonumber(L, -2);
float vy = lua_tonumber(L, -1);
uint16_t u,v;
lua_pop(L,4);
screen_trans(&vx,&vy);
texture_coord(tex, tx, ty, &u, &v);
vb[i].vx = vx + 1.0f;
vb[i].vy = vy - 1.0f;
vb[i].tx = u;
vb[i].ty = v;
}
if (point == 4) {
shader_draw(vb, color, additive);
} else {
shader_drawpolygon(point, vb, color, additive);
}
return 0;
}
void
sprite_drawpolygon(struct pack_polygon *poly, const struct srt *srt, const struct sprite_trans *arg) {
struct matrix tmp;
int i,j;
if (arg->mat == NULL) {
matrix_identity(&tmp);
} else {
tmp = *arg->mat;
}
matrix_srt(&tmp, srt);
int *m = tmp.m;
for (i=0;i<poly->n;i++) {
struct pack_poly *p = &poly->poly[i];
int glid = texture_glid(p->texid);
if (glid == 0)
continue;
shader_texture(glid);
int pn = p->n;
ARRAY(float, vb, 4 * pn);
for (j=0;j<pn;j++) {
int xx = p->screen_coord[j*2+0];
int yy = p->screen_coord[j*2+1];
float vx = (xx * m[0] + yy * m[2]) / 1024 + m[4];
float vy = (xx * m[1] + yy * m[3]) / 1024 + m[5];
float tx = p->texture_coord[j*2+0];
float ty = p->texture_coord[j*2+1];
screen_trans(&vx,&vy);
texture_coord(p->texid, &tx, &ty);
vb[j*4+0] = vx;
vb[j*4+1] = vy;
vb[j*4+2] = tx;
vb[j*4+3] = ty;
}
shader_drawpolygon(pn, vb, arg->color);
}
}
