sf2d_texture *sf2d_create_texture(int width, int height, GPU_TEXCOLOR pixel_format, sf2d_place place)
{
int pow2_w = next_pow2(width);
int pow2_h = next_pow2(height);
int data_size;
switch (pixel_format) {
case GPU_RGBA8:
default:
data_size = pow2_w * pow2_h * 4;
break;
case GPU_RGB8:
data_size = pow2_w * pow2_h * 3;
break;
case GPU_RGBA5551:
case GPU_RGB565:
data_size = pow2_w * pow2_h * 2;
break;
}
sf2d_texture *texture;
if (place == SF2D_PLACE_RAM) {
// If there's not enough linear heap space, return
if (linearSpaceFree() < data_size) {
return NULL;
}
texture = malloc(sizeof(*texture));
texture->data = linearMemAlign(data_size, 0x80);
} else if (place == SF2D_PLACE_VRAM) {
// If there's not enough VRAM heap space, return
if (vramSpaceFree() < data_size) {
return NULL;
}
texture = malloc(sizeof(*texture));
texture->data = vramMemAlign(data_size, 0x80);
} else {
//wot?
return NULL;
}
texture->place = place;
texture->pixel_format = pixel_format;
texture->width = width;
texture->height = height;
texture->pow2_w = pow2_w;
texture->pow2_h = pow2_h;
texture->data_size = data_size;
return texture;
}
/***
Get free VRAM space.
@function vramSpaceFree
@treturn integer free VRAM in bytes
*/
static int gfx_vramSpaceFree(lua_State *L) {
lua_pushinteger(L, vramSpaceFree());
return 1;
}