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#include <sys/types.h>
#include <SDL.h>
#include <SDL_opengl.h>
#include <generic.h>
#include "texture.h"
#include "engine.h"
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gettext.h"
#define DEBUG 1
#ifdef TRACE_TEXTURES
mogltk::texture * mogltk::texture::header = 0;
mogltk::texture * mogltk::texture::footer = 0;
#endif
mogltk::texture * mogltk::texture::active = 0;
mogltk::texture::texture(int w, int h, bool plane) throw (GeneralException) : width(w), height(h),
texture_allocated(false), planar(plane), tainted(true) {
if ((!ISPOT(w)) || (!ISPOT(h)))
throw GeneralException(_("Size of the texture not a power of 2!"));
if (!(surface = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height, 32,
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
0xff000000,
0x00ff0000,
0x0000ff00,
0x000000ff
#else
0x000000ff,
0x0000ff00,
0x00ff0000,
0xff000000
#endif
))) {
throw GeneralException(_("Can't create RGB Surface"));
}
SDL_FillRect(surface, 0, 0);
#ifdef TRACE_TEXTURES
next = 0;
prev = footer;
footer = this;
if (!header) {
header = this;
}
if (prev) {
prev->next = this;
}
#endif
}
mogltk::texture::texture(Handle * h, bool plane) throw (GeneralException) :
texture_allocated(false), planar(plane), tainted(true) {
SDL_Surface * temp;
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!"));
}
SDL_PixelFormat f;
f.palette = 0;
f.BitsPerPixel = 32;
f.BytesPerPixel = 4;
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
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
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
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_FreeSurface(temp);
#ifdef TRACE_TEXTURES
next = 0;
prev = footer;
footer = this;
if (!header) {
header = this;
}
if (prev) {
prev->next = this;
}
#endif
}
mogltk::texture::~texture() {
if (surface) {
SDL_FreeSurface(surface);
}
if (texture_allocated) {
glDeleteTextures(1, &tex);
}
#ifdef TRACE_TEXTURES
if (prev) {
prev->next = next;
}
if (next) {
next->prev = prev;
}
if (this == footer) {
footer = prev;
}
if (this == header) {
header = next;
}
#endif
}
Uint32 * mogltk::texture::GetPixels() {
return (Uint32 *) surface->pixels;
}
SDL_Surface * mogltk::texture::GetSurface() {
return surface;
}
SDL_PixelFormat * mogltk::texture::GetFormat() {
return surface->format;
}
void mogltk::texture::Generate() {
if (texture_allocated) {
glDeleteTextures(1, &tex);
}
glGenTextures(1, &tex);
#ifdef DEBUG
printm(M_INFO, _("Generated texture index: %i\n"), tex);
#endif
glBindTexture(GL_TEXTURE_2D, tex);
#if 0
if (planar) {
#ifdef DEBUG
printm(M_INFO, _("Generating planar texture: %i\n"), tex);
#endif
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, surface->pixels);
} else {
#endif
#ifdef DEBUG
printm(M_INFO, _("Generating 3D texture: %i\n"), tex);
#endif
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
gluBuild2DMipmaps(GL_TEXTURE_2D, GL_RGBA, width, height, GL_RGBA, GL_UNSIGNED_BYTE, surface->pixels);
// glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, surface->pixels);
#if 0
}
#endif
texture_allocated = true;
tainted = false;
}
void mogltk::texture::Bind(bool expand) {
if ((!texture_allocated) || tainted)
Generate();
glEnable(GL_TEXTURE_2D);
if (active == this)
return;
glBindTexture(GL_TEXTURE_2D, tex);
if (expand) {
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
glScaled(1 / (double) width, 1 / (double) height, 1);
glMatrixMode(GL_MODELVIEW);
}
active = this;
#ifdef TRACE_TEXTURES
if (header == this)
return;
if (prev) {
prev->next = next;
}
if (next) {
next->prev = prev;
}
if (footer = this) {
footer = prev;
}
header->prev = this;
header = this;
#endif
}
GLuint mogltk::texture::GetWidth() {
return width;
}
GLuint mogltk::texture::GetHeight() {
return height;
}
void mogltk::texture::Unbind(void) {
if (active) {
glBindTexture(GL_TEXTURE_2D, 0);
glDisable(GL_TEXTURE_2D);
active = 0;
}
}
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,
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
0xff000000,
0x00ff0000,
0x0000ff00,
0x000000ff
#else
0x000000ff,
0x0000ff00,
0x00ff0000,
0xff000000
#endif
))) {
throw GeneralException(_("Can't create RGB Surface for LoadNTEX"));
}
h->read(r->pixels, height * width * 4);
return r;
}
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