static void R_LoadHeightmap(const char *name, const SDL_Surface *surf) {
char heightmap[MAX_QPATH];
g_strlcpy(heightmap, name, sizeof(heightmap));
char *c = strrchr(heightmap, '_');
if (c) {
*c = '\0';
}
SDL_Surface *hsurf;
if (Img_LoadImage(va("%s_h", heightmap), &hsurf)) {
if (hsurf->w == surf->w && hsurf->h == surf->h) {
Com_Debug("Merging heightmap %s\n", heightmap);
byte *in = hsurf->pixels;
byte *out = surf->pixels;
const size_t len = surf->w * surf->h;
for (size_t i = 0; i < len; i++, in += 4, out += 4) {
out[3] = (in[0] + in[1] + in[2]) / 3.0;
}
} else {
Com_Warn("Incorrect heightmap resolution for %s\n", name);
}
SDL_FreeSurface(hsurf);
}
}
/**
* @brief
*/
static void R_SetWindowIcon(void) {
SDL_Surface *surf;
if (!Img_LoadImage("icons/quetoo", &surf)) {
return;
}
SDL_SetWindowIcon(r_context.window, surf);
SDL_FreeSurface(surf);
}
/**
* @brief
*/
void CalcTextureReflectivity(void) {
char path[MAX_OS_PATH];
int32_t i, j, texels;
uint32_t color[3];
SDL_Surface *surf;
// always set index 0 even if no textures
VectorSet(texture_reflectivity[0], 0.5, 0.5, 0.5);
for (i = 0; i < bsp_file.num_texinfo; i++) {
// see if an earlier texinfo already got the value
for (j = 0; j < i; j++) {
if (!g_strcmp0(bsp_file.texinfo[i].texture, bsp_file.texinfo[j].texture)) {
VectorCopy(texture_reflectivity[j], texture_reflectivity[i]);
break;
}
}
if (j != i) { // earlier texinfo found, continue
continue;
}
// load the image to calculate reflectivity
g_snprintf(path, sizeof(path), "textures/%s", bsp_file.texinfo[i].texture);
if (!Img_LoadImage(path, &surf)) {
Com_Warn("Couldn't load %s\n", path);
VectorSet(texture_reflectivity[i], 0.5, 0.5, 0.5);
continue;
}
// calculate average color
texels = surf->w * surf->h;
color[0] = color[1] = color[2] = 0;
for (j = 0; j < texels; j++) {
const byte *pos = (byte *) surf->pixels + j * 4;
color[0] += *pos++; // r
color[1] += *pos++; // g
color[2] += *pos++; // b
}
Com_Verbose("Loaded %s (%dx%d)\n", bsp_file.texinfo[i].texture, surf->w, surf->h);
SDL_FreeSurface(surf);
for (j = 0; j < 3; j++) {
const vec_t r = color[j] / texels / 255.0;
texture_reflectivity[i][j] = r;
}
}
}
/**
* @brief Calculates the texture color that is used for light emitting surfaces
*/
void CalcTextureReflectivity (void)
{
int i, j, texels = 0;
char path[MAX_QPATH];
int color[3];
SDL_Surface* surf;
/* always set index 0 even if no textures */
VectorSet(texture_reflectivity[0], 0.5, 0.5, 0.5);
VectorSet(color, 0, 0, 0);
for (i = 0; i < curTile->numtexinfo; i++) {
/* see if an earlier texinfo already got the value */
for (j = 0; j < i; j++) {
if (Q_streq(curTile->texinfo[i].texture, curTile->texinfo[j].texture)) {
VectorCopy(texture_reflectivity[j], texture_reflectivity[i]);
break;
}
}
if (j != i) /* earlier texinfo found, continue */
continue;
/* load the image file */
Com_sprintf(path, sizeof(path), "textures/%s", curTile->texinfo[i].texture);
if (!(surf = Img_LoadImage(path))) {
Verb_Printf(VERB_NORMAL, "Couldn't load %s\n", path);
VectorSet(texture_reflectivity[i], 0.5, 0.5, 0.5);
continue;
}
/* calculate average color */
texels = surf->w * surf->h;
color[0] = color[1] = color[2] = 0;
for(j = 0; j < texels; j++){
const byte* pos = (byte*)surf->pixels + j * 4;
color[0] += *pos++; /* r */
color[1] += *pos++; /* g */
color[2] += *pos++; /* b */
}
Verb_Printf(VERB_EXTRA, "Loaded %s (%dx%d)\n", curTile->texinfo[i].texture, surf->w, surf->h);
SDL_FreeSurface(surf);
for(j = 0; j < 3; j++){
const float r = color[j] / texels / 255.0;
texture_reflectivity[i][j] = r;
}
}
}
/*
* @brief Loads the image by the specified name.
*/
r_image_t *R_LoadImage(const char *name, r_image_type_t type) {
r_image_t *image;
char key[MAX_QPATH];
if (!name || !name[0]) {
Com_Error(ERR_DROP, "NULL name\n");
}
StripExtension(name, key);
if (!(image = (r_image_t *) R_FindMedia(key))) {
SDL_Surface *surf;
if (Img_LoadImage(key, &surf)) { // attempt to load the image
image = (r_image_t *) R_AllocMedia(key, sizeof(r_image_t));
image->media.Retain = R_RetainImage;
image->media.Free = R_FreeImage;
image->width = surf->w;
image->height = surf->h;
image->type = type;
if (image->type == IT_NORMALMAP) {
R_LoadHeightmap(name, surf);
}
if (image->type & IT_MASK_FILTER) {
R_FilterImage(image, GL_RGBA, surf->pixels);
}
R_UploadImage(image, GL_RGBA, surf->pixels);
SDL_FreeSurface(surf);
} else {
Com_Debug("Couldn't load %s\n", key);
image = r_image_state.null;
}
}
return image;
}
