From a1c65a2591cdbcb4ca1f469bc12f7a39c01bdb1b Mon Sep 17 00:00:00 2001
From: pixel <pixel>
Date: Mon, 10 Feb 2003 00:06:22 +0000
Subject: NTEX

---
 lib/gltexture.cc | 93 ++++++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 71 insertions(+), 22 deletions(-)

(limited to 'lib/gltexture.cc')

diff --git a/lib/gltexture.cc b/lib/gltexture.cc
index 601d24f..accdb3a 100644
--- a/lib/gltexture.cc
+++ b/lib/gltexture.cc
@@ -6,7 +6,9 @@
 #include "engine.h"
 #ifdef HAVE_CONFIG_H
 #include "config.h"
-#else
+#endif
+#include "gettext.h"
+#ifndef _
 #define _(x) x
 #endif
 
@@ -58,41 +60,54 @@ mogltk::texture::texture(Handle * h, bool plane, texture_type ttype) throw (Gene
 
     SDL_Surface * temp;
     
-#if USE_SDLIMAGE
-    if (!(temp = IMG_Load_RW(engine::RWFromHandle(h), 1)))
-	throw GeneralException(_("Can't load image from Handle ") + h->GetName());
-#else
-    if (!(temp = LoadNTEX(h)))
-	throw GeneralException(_("Can't load texture from Handle ") + h->GetName());
-#endif
+    temp = LoadNTEX(h);
     width = temp->w;
     height = temp->h;
 
+#ifdef DEBUG
+    printm(M_INFO, "Creating texture from file: size %ix%i\n", height, width);
+#endif
+
     if ((!ISPOT(width)) || (!ISPOT(height))) {
 	SDL_FreeSurface(temp);
 	throw GeneralException(_("Size of the texture not a power of 2!"));
     }
 
-    if (!(surface = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height, 32,
+    SDL_PixelFormat f;
+
+    f.palette = 0;
+    f.BitsPerPixel = 32;
+    f.BytesPerPixel = 4;
 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
-	0xff000000,
-	0x00ff0000,
-	0x0000ff00,
-	0x000000ff
+    f.Amask = 0x000000ff;
+    f.Bmask = 0x0000ff00;
+    f.Gmask = 0x00ff0000;
+    f.Rmask = 0xff000000;
+    f.Ashift = 0;
+    f.Bshift = 8;
+    f.Gshift = 16;
+    f.Rshift = 24;
 #else
-	0x000000ff,
-	0x0000ff00,
-	0x00ff0000,
-	0xff000000
+    f.Rmask = 0x000000ff;
+    f.Gmask = 0x0000ff00;
+    f.Bmask = 0x00ff0000;
+    f.Amask = 0xff000000;
+    f.Rshift = 0;
+    f.Gshift = 8;
+    f.Bshift = 16;
+    f.Ashift = 24;
 #endif
-    ))) {
-	SDL_FreeSurface(temp);
-	throw GeneralException(_("Can't create RGB Surface"));
+    f.Rloss = 0;
+    f.Gloss = 0;
+    f.Bloss = 0;
+    f.Aloss = 0;
+
+    if (!(surface = SDL_ConvertSurface(temp, &f, 0))) {
+	throw GeneralException("Could not convert texture to OpenGL format");
     }
     
-    SDL_BlitSurface(temp, 0, surface, 0);
     SDL_FreeSurface(temp);
-    
+
 #ifdef TRACE_TEXTURES
     next = 0;
     prev = footer;
@@ -222,6 +237,7 @@ GLuint mogltk::texture::GetHeight() {
 }
 
 void mogltk::texture::Unbind(void) {
+    glBindTexture(GL_TEXTURE_2D, 0);
     glDisable(GL_TEXTURE_2D);
     active = 0;
 #ifdef DEBUG
@@ -232,3 +248,36 @@ void mogltk::texture::Unbind(void) {
 void mogltk::texture::Taint(void) {
     tainted = true;
 }
+
+#ifdef WORDS_BIGENDIAN
+#define NTEX_SIGNATURE 0x4e544558
+#else
+#define NTEX_SIGNATURE 0x5845544e
+#endif
+
+SDL_Surface * mogltk::texture::LoadNTEX(Handle * h) throw (GeneralException) {
+    SDL_Surface * r;
+    char buffer[4];
+    Uint16 height, width;
+    
+    h->read(buffer, 4);
+    buffer[4] = 0;
+    if (*((Uint32 *) buffer) != NTEX_SIGNATURE)
+	throw GeneralException("Texture file " + h->GetName() + " corrupted");
+    
+    height = h->readU16();
+    width = h->readU16();
+    
+    if (!(r = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height, 32,
+	0x000000ff,
+	0x0000ff00,
+	0x00ff0000,
+	0xff000000
+    ))) {
+	throw GeneralException(_("Can't create RGB Surface for LoadNTEX"));
+    }
+    
+    h->read(r->pixels, height * width * 4);
+    
+    return r;
+}
-- 
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