/*
* Delete the texture from the world.
*/
void world_del_texture(struct world_t* wptr, struct tga_t* text) {
struct world_texture_t* del = wptr->texts;
struct world_texture_t* last = NULL;
while (del) {
if (del->text == text) {
/* delink this one */
if (last)
last->next = del->next;
if (wptr->texts == del)
wptr->texts = del->next;
#ifdef _DEBUG
printf("Texture \"%s\" deleted (GL unbind id %i).\n", del->name, del->gl_text_id);
#endif
/* tell GL to unbind the texture */
glDeleteTextures(1, &del->gl_text_id);
/* unload the texture */
free_tga(del->text);
free(del);
return;
}
last = del;
del = del->next;
}
}
/*
* Deallocate the world...
*/
void world_free(struct world_t* wptr) {
struct world_link_models_t* mnext = NULL;
struct world_texture_t* tnext = NULL;
/* free all the models */
while (wptr->models) {
mnext = wptr->models->next;
md3_unload_model(wptr->models->model);
wptr->models = mnext;
}
/* free all the textures */
while (wptr->texts) {
free_tga(wptr->texts->text);
free(wptr->texts->name);
tnext = wptr->texts->next;
free(wptr->texts);
wptr->texts = tnext;
}
free(wptr);
}
/*
Function: gdImageCreateFromTgaCtx
Creates a gdImage from a gdIOCtx referencing a TGA binary file.
Parameters:
ctx - Pointer to a gdIOCtx structure
*/
BGD_DECLARE(gdImagePtr) gdImageCreateFromTgaCtx(gdIOCtx* ctx)
{
int bitmap_caret = 0;
oTga *tga = NULL;
/* int pixel_block_size = 0;
int image_block_size = 0; */
volatile gdImagePtr image = NULL;
int x = 0;
int y = 0;
tga = (oTga *) gdMalloc(sizeof(oTga));
if (!tga) {
return NULL;
}
tga->bitmap = NULL;
tga->ident = NULL;
if (read_header_tga(ctx, tga) < 0) {
free_tga(tga);
return NULL;
}
/*TODO: Will this be used?
pixel_block_size = tga->bits / 8;
image_block_size = (tga->width * tga->height) * pixel_block_size;
*/
if (read_image_tga(ctx, tga) < 0) {
free_tga(tga);
return NULL;
}
image = gdImageCreateTrueColor((int)tga->width, (int)tga->height );
if (image == 0) {
free_tga( tga );
return NULL;
}
/*! \brief Populate GD image object
* Copy the pixel data from our tga bitmap buffer into the GD image
* Disable blending and save the alpha channel per default
*/
if (tga->alphabits) {
gdImageAlphaBlending(image, 0);
gdImageSaveAlpha(image, 1);
}
/* TODO: use alphabits as soon as we support 24bit and other alpha bps (ie != 8bits) */
for (y = 0; y < tga->height; y++) {
register int *tpix = image->tpixels[y];
for ( x = 0; x < tga->width; x++, tpix++) {
if (tga->bits == TGA_BPP_24) {
*tpix = gdTrueColor(tga->bitmap[bitmap_caret + 2], tga->bitmap[bitmap_caret + 1], tga->bitmap[bitmap_caret]);
bitmap_caret += 3;
} else if (tga->bits == TGA_BPP_32 && tga->alphabits) {
register int a = tga->bitmap[bitmap_caret + 3];
*tpix = gdTrueColorAlpha(tga->bitmap[bitmap_caret + 2], tga->bitmap[bitmap_caret + 1], tga->bitmap[bitmap_caret], gdAlphaMax - (a >> 1));
bitmap_caret += 4;
}
}
}
if (tga->flipv && tga->fliph) {
gdImageFlipBoth(image);
} else if (tga->flipv) {
gdImageFlipVertical(image);
} else if (tga->fliph) {
gdImageFlipHorizontal(image);
}
free_tga(tga);
return image;
}
