mirror of
https://github.com/outbackdingo/UltraGrid.git
synced 2026-03-20 13:40:13 +00:00
264 lines
6.7 KiB
C++
264 lines
6.7 KiB
C++
/******************************************************************************
|
|
* a DXT viewing utility
|
|
*
|
|
* Author : Robert Kooima
|
|
*
|
|
* Copyright (C) 2007 Electronic Visualization Laboratory,
|
|
* University of Illinois at Chicago
|
|
*
|
|
* This library is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation; either Version 2.1 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
|
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
|
|
* License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser Public License along
|
|
* with this library; if not, write to the Free Software Foundation, Inc.,
|
|
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*****************************************************************************/
|
|
|
|
|
|
#include <SDL/SDL.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <fcntl.h>
|
|
#include <sys/types.h>
|
|
|
|
#if !defined(WIN32)
|
|
#include <unistd.h>
|
|
#include <sys/mman.h>
|
|
#endif
|
|
|
|
#define MAXSTR 256
|
|
|
|
#include "dxt.h"
|
|
#include "glsl.h"
|
|
|
|
#ifdef __APPLE__
|
|
#include <OpenGL/gl.h>
|
|
#endif
|
|
|
|
#ifdef __linux__
|
|
#include <GL/gl.h>
|
|
#include <GL/glx.h>
|
|
#include <GL/glext.h>
|
|
#define glGetProcAddress(n) glXGetProcAddressARB((GLubyte *) n)
|
|
#endif
|
|
|
|
#ifdef _WIN32
|
|
#include <windows.h>
|
|
#include <GL/gl.h>
|
|
#include "glext.h"
|
|
#define glGetProcAddress(n) wglGetProcAddress(n)
|
|
#endif
|
|
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
#ifndef GLSL_YCOCG
|
|
#ifndef __APPLE__
|
|
static PFNGLGETCOMPRESSEDTEXIMAGEARBPROC glGetCompressedTexImage;
|
|
static PFNGLCOMPRESSEDTEXIMAGE2DARBPROC glCompressedTexImage2D;
|
|
#endif
|
|
#endif
|
|
|
|
static void init_gl(void)
|
|
{
|
|
#ifndef __APPLE__
|
|
glGetCompressedTexImage = (PFNGLGETCOMPRESSEDTEXIMAGEARBPROC)
|
|
glGetProcAddress("glGetCompressedTexImageARB");
|
|
glCompressedTexImage2D = (PFNGLCOMPRESSEDTEXIMAGE2DARBPROC)
|
|
glGetProcAddress("glCompressedTexImage2DARB");
|
|
#endif
|
|
|
|
glEnable(GL_TEXTURE_2D);
|
|
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
|
|
static void in_dxt(int w, int h, int format, const char *name)
|
|
{
|
|
FILE *fin = NULL;
|
|
static int first = 1;
|
|
|
|
if ((fin = fopen(name, "rb")))
|
|
{
|
|
GLubyte *p;
|
|
GLsizei sz;
|
|
|
|
if (format == 5 || format == 6)
|
|
sz = 4 * w * h / 4;
|
|
else
|
|
sz = 8 * (w / 4) * (h / 4);
|
|
|
|
if ((p = (GLubyte *) malloc(sz)))
|
|
{
|
|
int ww, hh;
|
|
fread( &ww, sizeof( int ), 1, fin );
|
|
fread( &hh, sizeof( int ), 1, fin );
|
|
|
|
fread(p, 1, sz, fin);
|
|
|
|
if (format == 5 || format == 6)
|
|
glCompressedTexImage2D(GL_TEXTURE_2D, 0,
|
|
GL_COMPRESSED_RGBA_S3TC_DXT5_EXT,
|
|
w, h, 0, sz, p);
|
|
else
|
|
glCompressedTexImage2D(GL_TEXTURE_2D, 0,
|
|
GL_COMPRESSED_RGB_S3TC_DXT1_EXT,
|
|
w, h, 0, sz, p);
|
|
free(p);
|
|
}
|
|
fclose(fin);
|
|
}
|
|
else perror("fopen");
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
static void display(int w, int h)
|
|
{
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity();
|
|
glFrustum(0, w, 0, h, 0, 1);
|
|
|
|
glMatrixMode(GL_MODELVIEW);
|
|
glLoadIdentity();
|
|
|
|
glClearColor(0,1,0,1);
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
|
|
glBegin(GL_POLYGON);
|
|
{
|
|
glTexCoord2i(0, 1); glVertex2i(-1, -1);
|
|
glTexCoord2i(1, 1); glVertex2i(+1, -1);
|
|
glTexCoord2i(1, 0); glVertex2i(+1, +1);
|
|
glTexCoord2i(0, 0); glVertex2i(-1, +1);
|
|
}
|
|
glEnd();
|
|
|
|
glFinish();
|
|
|
|
SDL_GL_SwapBuffers();
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
#ifdef __APPLE__
|
|
#undef main
|
|
#endif /* __APPLE__ */
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int w = 1024;
|
|
int h = 512;
|
|
int format = 1; // DXT1 or DXT5 or DXT5YCoCg (6)
|
|
int out = 0;
|
|
int argi;
|
|
|
|
/* Process arguments. */
|
|
|
|
for (argi = 1; argi < argc; ++argi)
|
|
if (strcmp(argv[argi], "-5") == 0) format = 5;
|
|
else if (strcmp(argv[argi], "-6") == 0) format = 6;
|
|
else if (strcmp(argv[argi], "-1") == 0) format = 1;
|
|
else if (strcmp(argv[argi], "-w") == 0) w = atoi(argv[++argi]);
|
|
else if (strcmp(argv[argi], "-h") == 0) h = atoi(argv[++argi]);
|
|
else break;
|
|
|
|
/* Use SDL to get an OpenGL context for use as compressor/decompressor. */
|
|
|
|
if (SDL_Init(SDL_INIT_VIDEO) == 0)
|
|
{
|
|
//SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
|
|
//SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
|
|
//SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
|
|
//SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
|
|
//SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
|
|
|
|
if (SDL_SetVideoMode(w, h, 0, SDL_OPENGL))
|
|
{
|
|
SDL_Event e;
|
|
|
|
init_gl();
|
|
|
|
/* Convert and display named files. */
|
|
|
|
#if defined(GLSL_YCOCG)
|
|
// Initialize the "OpenGL Extension Wrangler" library
|
|
glewInit();
|
|
|
|
if (!glewIsSupported("GL_VERSION_2_0 "
|
|
"GL_ARB_vertex_program "
|
|
"GL_ARB_fragment_program "
|
|
"GL_ARB_texture_compression "
|
|
"GL_EXT_texture_compression_s3tc "
|
|
)
|
|
) {
|
|
fprintf(stderr, "GLSL_YCOCG> Unable to load required OpenGL extension\n");
|
|
exit(-1);
|
|
}
|
|
|
|
// Load the shaders
|
|
GLchar *FragmentShaderSource;
|
|
GLchar *VertexShaderSource;
|
|
GLSLreadShaderSource("ycocg", &VertexShaderSource, &FragmentShaderSource);
|
|
PHandle = GLSLinstallShaders(VertexShaderSource, FragmentShaderSource);
|
|
|
|
/* Finally, use the program. */
|
|
glUseProgramObjectARB(PHandle);
|
|
|
|
glUseProgramObjectARB(0);
|
|
#endif
|
|
|
|
#if defined(GLSL_YCOCG)
|
|
if (format == 6)
|
|
{
|
|
glUseProgramObjectARB(PHandle);
|
|
glActiveTexture(GL_TEXTURE0);
|
|
int h=glGetUniformLocationARB(PHandle,"yuvtex");
|
|
glUniform1iARB(h,0); /* Bind yuvtex to texture unit 0 */
|
|
}
|
|
#endif
|
|
|
|
|
|
for (; argi < argc; ++argi)
|
|
{
|
|
in_dxt(w, h, format, argv[argi]);
|
|
display(w, h);
|
|
|
|
while (SDL_PollEvent(&e))
|
|
if (e.type == SDL_QUIT || e.type == SDL_KEYDOWN)
|
|
break;
|
|
}
|
|
|
|
#if defined(GLSL_YCOCG)
|
|
if (format == 6)
|
|
glUseProgramObjectARB(0);
|
|
#endif
|
|
|
|
while (SDL_WaitEvent(&e))
|
|
if (e.type == SDL_QUIT || e.type == SDL_KEYDOWN)
|
|
break;
|
|
|
|
}
|
|
else fprintf(stderr, "SDL_SetVideoMode: %s\n", SDL_GetError());
|
|
|
|
SDL_Quit();
|
|
}
|
|
else fprintf(stderr, "SDL_Init: %s\n", SDL_GetError());
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|